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STORMWATER REPORT - 02-17-22Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 Stormwater Management Report Owner: Gayle Morin 1441 Lake Lucy Rd. Chanhassen, MN 55317 Project: Gayle Morin Subdivision 1441 Lake Lucy Rd. Chanhassen, MN 55317 Engineer’s Certification: All plans and supporting Documentation contained in this report have been reviewed by me and it is hereby certified that to the best of my knowledge the plans comply with the requirements of the ordinance. I hereby certify that this report was prepared by me or under my direct supervision and that I am a duly Registered Professional Engineer under the laws of the State of Minnesota. _________________ Matthew R. Pavek P.E. Registration Number: 44263 Date: 02-17-2022 Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 Table of Contents: 1.0 Cover Sheet, Engineer’s Certification 2.0 Summary Analysis / Narrative 2.1 Introduction 2.2 Existing Site Conditions 2.3 Proposed Site Conditions 2.4 Stormwater Requirements – City 2.5 Stormwater Requirements – Watershed District 2.6 Stormwater Requirements – MPCA / NPDES 3.0 Stormwater Calculations 3.1 Proposed Stormwater Management Strategy & Facilities Description 3.2 Rate Control 3.3 Water Quality 3.4 Volume Control 4.0 Conclusions Figures: Figure 1 – Existing Conditions Drainage Area map Figure 2 – Proposed Conditions Drainage Area Map Appendices: HydroCAD Existing Conditions HydroCAD Modeling Proposed Conditions HydroCAD Modeling Drainage Calculations Summary Table P8 Calculations Preliminary Soils Report Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 2.0 Summary Analysis / Narrative: 2.1 Introduction: This stormwater management report accompanies the Civil Engineering Plans prepared by Civil Site Group for the subject project dated 01/28/2022.This report includes a summary of the existing and proposed site conditions, the stormwater requirements of relevant regulatory agencies, and proposed design calculations and data to meet the requirements. 2.2 Existing Site Conditions : Site Description: The existing site is an existing home with driveway. Below is the existing surface area tabulation. Existing Soils: The existing soil borings show primarily sandy lean clay and clayey sand under a layer of topsoil. These soil types have a soil group of D which was used in the modeling. Groundwater: Groundwater was not observed at the time of soil boring. After discussion with the geotechnical engineer, they explained in the clay type soil and high blow out counts the only water they would expect to encounter would be perched or water trapped in sand veins. 2.3 Proposed Site Conditions: Site Description: The proposed site is a lot split with the addition of two home with associated parking, drive entrances, landscaping, and stormwater improvements. The proposed site surface coverage areas are shown in the table below: Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 2.4 Stormwater Requirements City (Chanhassen): The city of Chanhassen’s stormwater requirements defers to watershed. 2.5 Stormwater Requirements Watershed District – (Riley Purgatory Bluff Creek Watershed District (RPBCWD)) Requirement threshold – Alteration or removal of 5,000 square feet or more of land-surface area or vegetation. Rate Control – Peak runoff rate may not exceed existing conditions for the 2-yr, 10-yr, 100-yr 24-hour rainfall events, utilize Atlas 14 rainfall data Water Quality – 60% annual removal efficiency of total phosphorus (TP) and 90% annual removal of total suspended solids (TSS) Volume Control – Provide for the abstraction of 0.55” of runoff from the new impervious surface area of the parcel. Due to the site restriction 0.55” was used instead of the normal 1.1”. 2.6 Stormwater Requirements - Minnesota Pollution Control Agency – NPPDES permit (MPCA): Requirement threshold - A permit is required for projects with a disturbed area over 1 acre in size, Stormwater management is required for a project adding 1-acre of more of NEW impervious surface (reconstructed impervious is not included). Rate Control – No specific regulation, may not degrade downstream facilities. Water Quality – Stormwater water quality treatment volume must be provided equal to 1.0” over all new impervious surfaces (includes all newly constructed impervious surfaces only, re-constructed impervious surfaces are not included). Volume Control – Must consider volume reduction if feasible and not prohibited on site. The required infiltration volume is equal to the water quality volume described above. 3.0 Stormwater Calculations: 3.1 Proposed Stormwater Management Strategy & Facilities Description This project is disturbing 1.00 Acres of land. This project triggers the stormwater requirements of Riley Purgatory Bluff Creek Watershed District, and their rules will be used as a basis for the design requirements for this project. The proposed stormwater strategy for this project is directing the project stormwater runoff via surface drainage and storm sewer piping to a surface biofiltration basins and underground rock sections throughout the site. These basins and underground rock sections are designed to provide water quality treatment, volume reduction, and rate control requirements. Requirement 3.3b was followed for the proposed stormwater treatment design. Fulfilling the entirety of the requirements under section 3.1 is not feasible due to several site constraints. The survey shows several areas of the existing topography with slopes greater than 3:1 and the proposed disturbed area as heavily wooded. Regrading the site to include BMPs large enough to meet the watershed’s 3.1 requirements would require a sizable amount of additional tree removed. Based on Web Soil Survey Civil Site Group modeled the proposed site as entirely clay and assumed a high ground water table due to the wetland elevations onsite. This will be updated upon the receival of the soils report. At the time of this submittal, it is not feasible to test the infiltration rate on site due to the current weather conditions. Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 Stormwater quality site treatment percentage The total proposed site impervious area is 22,679 SF. The total impervious area directed to biofiltration basins is 13,472 SF. 100% of the proposed site impervious area is being treated by the biofiltration basins. The 9,207 SF of existing impervious follows the same drainage pattern to wetland A. It is not feasible to capture and treat this existing impervious due to existing grades on the proposed subdivided lot. 3.2 Rate Control Rate control is provided by live storage within the proposed biofiltration basins and an outlet control structure. This information was derived using HydroCAD stormwater modeling software. The existing and proposed runoff rates are shown in the summary table below. Runoff rates have been maintained or reduced to all discharge points. The proposed runoff rates in aggregate are less than the existing peak runoff rates – REQUIREMENT SATISFIED Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 3.3 Water Quality Water quality requirements are met by the biofiltration basins and underground rock section on site. Water quality was calculated out using P8 modeling. The biofiltration system and underground filtration system provide TSS and TP removal by allowing a portion of the TSS and TP to be filtered through the media prior to the draintile. In addition, the volume below the draintile which allows for infiltration allows for extra TSS and TP removal. The proposed water quality calculations are shown in the table below: The project reduces the TSS loading when compared to existing conditions. The TP loading is increased when compared to existing conditions. The proposed water quality achieves a 60% total phosphorus (TP) and 90% total suspended solids (TSS) removal which is greater than or equivalent to the required water quality requirement. – REQUIREMENT PARTIALLY SATISFIED Civil Site Group, PC 4931 West 35th Street Suite 200 St. Louis Park Minnesota 55416 www.CivilSiteGroup.com (612) 615-0060 3.4 Volume Control Water volume control requirements of 3.3b to the maximum extent practicable are provided by a rock infiltration section below biofiltration basins. The depth of rock has been set to 0.6 feet for the above ground BMP which allows for a drawdown of 48 hours based on 40% voids and 0.06 in/hr. It is not feasible to provide 0.55 inches of volume control for the entire site due to groundwater and the existing grades, and heavy tree cover of the site. The proposed volume provided within the rock section below biofiltration basins provides a portion of the required volume and is the maximum volume that is practicable to obtain. – REQUIREMENT PARTIALLY SATISFIED 4.0 Conclusions: To the best of our knowledge, this project meets all State, City and Watershed District stormwater management requirements. S88°03'48"E 180.08S00°10'43"W 1131.8 +/-N00°10'43"E 1220.1 +/-33.0233.021161.341081.20N88°03'48"W 308.34 Wetland Line(Per Delineation byJacobson Environmental, PLLCon 10-8-2021)980990100098099010001020101010201010103097097097096096010301030103410349809809901000100210001002104010361036APPROX. EXISTINGCB LOCATION, TYP.APPROX.EXISTING CBLOCATION,TYP.WETLAND BLAKELUCYWETLANDAEX 2EX IMPV = 2,278 SFEX PERV = 26,521 SFTOTAL = 28,799 SFEX 1BEX IMPV = 7,290 SFEX PERV = 55,517 SFTOTAL = 62,807 SFOFFSITE BEX IMPV = 6,076 SFEX PERV = 68,789 SFTOTAL = 74,865 SFEX 1AEX IMPV = 3,245 SFEX PERV = 0 SFTOTAL = 3,245 SFWETLAND ATOTAL = 9,788 SFUNDISTURBEDEX IMPV = 0 SFEX PERV = 103,208 SFTOTAL = 103,208 SFEX 1CEX IMPV = 0 SFEX PERV = 3,209 SFTOTAL = 3,209 SFOFFSITE AEX IMPV = 8,875 SFEX PERV = 40,698 SFTOTAL = 49,573 SFProject Number:Issue Date:Revision Number:Revision Date:5000 Glenwood AveGolden Valley, MN 55422952.250.2003 / 763.213.394www.CivilSiteGroup.comGAYLE MORIN1441 LUCY LAKE RD, CHANHASSEN, MN 55317DA12142901/28/2022..01" = 100'-0"100'-0"50'-0"NEXISTING DRAINAGE MAP S88°03'48"E 180.08S00°10'43"W 1131.8 +/-N00°10'43"E 1220.1 +/-33.0233.021161.341081.20N88°03'48"W 308.34 2 4 . 5 48.013.88.48.58 . 5 2.33 . 4 40.45 9 . 4 24.93 2 . 54.572.7Wetland Line(Per Delineation byJacobson Environmental, PLLCon 10-8-2021)98099010009809901000102010101020101097097097010301030980980990WETLANDAEX 2EX IMPV = 2,278 SFEX PERV = 26,521 SFTOTAL = 28,799 SFEX 1BEX IMPV = 7,290 SFEX PERV = 55,517 SFTOTAL = 62,807 SFOFFSITE BEX IMPV = 6,076 SFEX PERV = 68,789 SFTOTAL = 74,865 SFEX 1AEX IMPV = 3,245 SFEX PERV = 0 SFTOTAL = 3,245 SFWETLAND ATOTAL = 9,788 SFEX 1CEX IMPV = 0 SFEX PERV = 3,209 SFTOTAL = 3,209 SFOFFSITE AEX IMPV = 8,875 SFEX PERV = 40,698 SFTOTAL = 49,573 SFProject Number:Issue Date:Revision Number:Revision Date:5000 Glenwood AveGolden Valley, MN 55422952.250.2003 / 763.213.394www.CivilSiteGroup.comGAYLE MORIN1441 LUCY LAKE RD, CHANHASSEN, MN 55317DA12142901/28/2022..01" = 50'-0"50'-0"25'-0"NEXISTING DRAINAGE MAP-BLOWUP S88°03'48"E 180.08S00°10'43"W 1131.8 +/-N00°10'43"E 1220.1 +/-S67°39'42"W 194.8533.0233.0225.8 +/-17.6 +/-1161.341081.20N88°03'48"W 308.34 Wetland Line(Per Delineation byJacobson Environmental, PLLCon 10-8-2021)32BLOCK 11LOT 1LOT 2LOT 3BLOCK 1BLOCK 1WETLAND BLAKELUCYWETLANDAUNDISTURBEDPR IMPV = 0 SFPR PERV = 103,208 SFTOTAL = 103,208 SFAPPROX. EXISTINGCB LOCATION, TYP.APPROX. EXISTINGCB LOCATION, TYP.PR 1BPR IMPV = 7,290 SFPR PERV = 23,142 SFTOTAL = 30,432 SFPR 1APR IMPV = 3,245 SFPR PERV = 0 SFTOTAL = 3,245 SFPR 2CPR IMPV = 3,481 SFPR PERV = 9,481 SFTOTAL = 12,962 SFWETLAND AONSITE TOTAL = 9,788 SFDELINEATED TOTAL = 11,587 SFPR 2APR IMPV = 0 SFPR PERV = 6,877 SFTOTAL = 6,877 SFPR 1CPR IMPV = 6,962 SFPR PERV = 27,526 SFTOTAL = 34,488 SFPR 2BPR IMPV = 3,006 SFPR PERV = 6,964 SFTOTAL = 9,970 SFOFFSITE BPR IMPV = 6,076 SFPR PERV = 68,789 SFTOTAL = 74,865 SFOFFSITE APR IMPV = 8,875 SFPR PERV = 40,698 SFTOTAL = 49,573 SFProject Number:Issue Date:Revision Number:Revision Date:5000 Glenwood AveGolden Valley, MN 55422952.250.2003 / 763.213.394www.CivilSiteGroup.comGAYLE MORIN1441 LUCY LAKE RD, CHANHASSEN, MN 55317DA22142901/28/2022..01" = 100'-0"100'-0"50'-0"NPROPOSED DRAINAGE MAP S88°03'48"E 180.08S00°10'43"W 1131.8 +/-N00°10'43"E 1220.1 +/-33.0233.021161.341081.20N88°03'48"W 308.34 Wetland Line(Per Delineation byJacobson Environmental, PLLCon 10-8-2021)32BLOCK 117203 SF31,088 SF35,385 SF137,263 SFLOT 1LOT 2LOT 3BLOCK 1BLOCK 1WETLANDAPR 1BPR IMPV = 7,290 SFPR PERV = 23,142 SFTOTAL = 30,432 SFPR 1APR IMPV = 3,245 SFPR PERV = 0 SFTOTAL = 3,245 SFPR 2CPR IMPV = 3,481 SFPR PERV = 9,481 SFTOTAL = 12,962 SFWETLAND AONSITE TOTAL = 9,788 SFDELINEATED TOTAL = 11,587 SFPR 2APR IMPV = 0 SFPR PERV = 6,877 SFTOTAL = 6,877 SFPR 1CPR IMPV = 6,962 SFPR PERV = 27,526 SFTOTAL = 34,488 SFPR 2BPR IMPV = 3,006 SFPR PERV = 6,964 SFTOTAL = 9,970 SFOFFSITE BPR IMPV = 6,076 SFPR PERV = 68,789 SFTOTAL = 74,865 SFOFFSITE APR IMPV = 8,875 SFPR PERV = 40,698 SFTOTAL = 49,573 SFProject Number:Issue Date:Revision Number:Revision Date:5000 Glenwood AveGolden Valley, MN 55422952.250.2003 / 763.213.394www.CivilSiteGroup.comGAYLE MORIN1441 LUCY LAKE RD, CHANHASSEN, MN 55317DA22142901/28/2022..01" = 50'-0"50'-0"25'-0"NPROPOSED DRAINAGE MAP- BLOWUP EX1A EX1A - DRAINS EAST DOWN LAKE LUCY ROAD EX1B EX1B - DRAINS SOUTH TO WETLAND A EX1C EX1C - DRAINS SOUTH TO WETLAND A EX2 EX2 - DRAINS SOUTH TO WETLAND B OFFSITE A OFFSITE - DRAINS SOUTH TO WETLAND A OFFSITE B OFFSITE B- DRAINS SOUTH TO WETLAND A DA1 DRAINAGE AREA 1-TOTAL TO WETLAND A DA3 DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 1P WETLAND A Routing Diagram for 21429- EXISTING Prepared by {enter your company name here}, Printed 1/28/2022 HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link 21429- CHANHASSEN LOT SPLIT - EXISTING 21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2y 24hr AT-14 MSE 24-hr 3 Default 24.00 1 2.94 2 2 10y 24hr AT-14 MSE 24-hr 3 Default 24.00 1 4.26 2 3 100y 24hr AT-14 MSE 24-hr 3 Default 24.00 1 7.36 2 21429- CHANHASSEN LOT SPLIT - EXISTING 21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 4.470 80 Pasture/grassland/range, Good, HSG D (EX1B, EX1C, EX2, OFFSITE A, OFFSITE B) 0.637 98 Paved parking, HSG C (EX1A, EX1B, EX2, OFFSITE A, OFFSITE B) 5.108 82 TOTAL AREA 21429- CHANHASSEN LOT SPLIT - EXISTING 21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 0.637 HSG C EX1A, EX1B, EX2, OFFSITE A, OFFSITE B 4.470 HSG D EX1B, EX1C, EX2, OFFSITE A, OFFSITE B 0.000 Other 5.108 TOTAL AREA 21429- CHANHASSEN LOT SPLIT - EXISTING 21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 4.470 0.000 4.470 Pasture/grassland/range, Good EX 1B , EX 1C , EX 2, OF FS IT E A, OF FS IT E B 0.000 0.000 0.637 0.000 0.000 0.637 Paved parking EX 1A , EX 1B , EX 2, OF FS IT E A, OF FS IT E B 0.000 0.000 0.637 4.470 0.000 5.108 TOTAL AREA 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=3,245 sf 100.00% Impervious Runoff Depth=2.71"Subcatchment EX1A: EX1A - DRAINS Tc=10.0 min CN=WQ Runoff=0.28 cfs 0.017 af Runoff Area=62,807 sf 11.61% Impervious Runoff Depth=1.38"Subcatchment EX1B: EX1B - DRAINS Tc=10.0 min CN=WQ Runoff=3.00 cfs 0.166 af Runoff Area=3,209 sf 0.00% Impervious Runoff Depth=1.21"Subcatchment EX1C: EX1C - DRAINS Tc=10.0 min CN=WQ Runoff=0.14 cfs 0.007 af Runoff Area=28,791 sf 7.91% Impervious Runoff Depth=1.32"Subcatchment EX2: EX2 - DRAINS SOUTH Tc=10.0 min CN=WQ Runoff=1.33 cfs 0.073 af Runoff Area=49,573 sf 17.90% Impervious Runoff Depth=1.47"Subcatchment OFFSITE A: OFFSITE - Tc=10.0 min CN=WQ Runoff=2.50 cfs 0.140 af Runoff Area=74,865 sf 8.12% Impervious Runoff Depth=1.33"Subcatchment OFFSITE B: OFFSITE B- Tc=10.0 min CN=WQ Runoff=3.46 cfs 0.190 af Inflow=5.81 cfs 0.503 afReach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A Outflow=5.81 cfs 0.503 af Inflow=6.73 cfs 0.576 afReach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Outflow=6.73 cfs 0.576 af Peak Elev=969.99' Storage=4,654 cf Inflow=9.09 cfs 0.503 afPond 1P: WETLAND A Outflow=5.81 cfs 0.503 af Total Runoff Area = 5.108 ac Runoff Volume = 0.593 af Average Runoff Depth = 1.39" 87.52% Pervious = 4.470 ac 12.48% Impervious = 0.637 ac 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD Runoff = 0.28 cfs @ 12.17 hrs, Volume= 0.017 af, Depth= 2.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 3,245 98 Paved parking, HSG C 0 80 Pasture/grassland/range, Good, HSG D 3,245 Weighted Average 3,245 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=3,245 sf Runoff Volume=0.017 af Runoff Depth=2.71" Tc=10.0 min CN=WQ 0.28 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1B: EX1B - DRAINS SOUTH TO WETLAND A Runoff = 3.00 cfs @ 12.18 hrs, Volume= 0.166 af, Depth= 1.38" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 7,290 98 Paved parking, HSG C 55,517 80 Pasture/grassland/range, Good, HSG D 62,807 Weighted Average 55,517 88.39% Pervious Area 7,290 11.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1B: EX1B - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=62,807 sf Runoff Volume=0.166 af Runoff Depth=1.38" Tc=10.0 min CN=WQ 3.00 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1C: EX1C - DRAINS SOUTH TO WETLAND A Runoff = 0.14 cfs @ 12.18 hrs, Volume= 0.007 af, Depth= 1.21" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 0 98 Paved parking, HSG C 3,209 80 Pasture/grassland/range, Good, HSG D 3,209 Weighted Average 3,209 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1C: EX1C - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=3,209 sf Runoff Volume=0.007 af Runoff Depth=1.21" Tc=10.0 min CN=WQ 0.14 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX2: EX2 - DRAINS SOUTH TO WETLAND B Runoff = 1.33 cfs @ 12.18 hrs, Volume= 0.073 af, Depth= 1.32" Routed to Reach DA3 : DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 2,278 98 Paved parking, HSG C 26,513 80 Pasture/grassland/range, Good, HSG D 28,791 Weighted Average 26,513 92.09% Pervious Area 2,278 7.91% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX2: EX2 - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=28,791 sf Runoff Volume=0.073 af Runoff Depth=1.32" Tc=10.0 min CN=WQ 1.33 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A Runoff = 2.50 cfs @ 12.18 hrs, Volume= 0.140 af, Depth= 1.47" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 8,875 98 Paved parking, HSG C 40,698 80 Pasture/grassland/range, Good, HSG D 49,573 Weighted Average 40,698 82.10% Pervious Area 8,875 17.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=49,573 sf Runoff Volume=0.140 af Runoff Depth=1.47" Tc=10.0 min CN=WQ 2.50 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A Runoff = 3.46 cfs @ 12.18 hrs, Volume= 0.190 af, Depth= 1.33" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 6,076 98 Paved parking, HSG C 68,789 80 Pasture/grassland/range, Good, HSG D 74,865 Weighted Average 68,789 91.88% Pervious Area 6,076 8.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=74,865 sf Runoff Volume=0.190 af Runoff Depth=1.33" Tc=10.0 min CN=WQ 3.46 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.372 ac, 11.68% Impervious, Inflow Depth = 1.38" for 2y 24hr AT-14 event Inflow = 5.81 cfs @ 12.28 hrs, Volume= 0.503 af Outflow = 5.81 cfs @ 12.28 hrs, Volume= 0.503 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA3 : DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 Inflow Area=4.372 ac 5.81 cfs 5.81 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.033 ac, 11.18% Impervious, Inflow Depth = 1.37" for 2y 24hr AT-14 event Inflow = 6.73 cfs @ 12.26 hrs, Volume= 0.576 af Outflow = 6.73 cfs @ 12.26 hrs, Volume= 0.576 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=5.033 ac 6.73 cfs 6.73 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: WETLAND A Inflow Area = 4.372 ac, 11.68% Impervious, Inflow Depth = 1.38" for 2y 24hr AT-14 event Inflow = 9.09 cfs @ 12.18 hrs, Volume= 0.503 af Outflow = 5.81 cfs @ 12.28 hrs, Volume= 0.503 af, Atten= 36%, Lag= 6.1 min Primary = 5.81 cfs @ 12.28 hrs, Volume= 0.503 af Routed to Reach DA1 : DRAINAGE AREA 1-TOTAL TO WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 969.99' @ 12.28 hrs Surf.Area= 13,484 sf Storage= 4,654 cf Plug-Flow detention time= 25.2 min calculated for 0.503 af (100% of inflow) Center-of-Mass det. time= 25.2 min ( 831.7 - 806.5 ) Volume Invert Avail.Storage Storage Description #1 969.62' 19,596 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 969.62 11,466 0 0 970.00 13,522 4,748 4,748 971.00 16,175 14,849 19,596 Device Routing Invert Outlet Devices #1 Primary 969.62'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=5.81 cfs @ 12.28 hrs HW=969.99' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 5.81 cfs @ 1.56 fps) 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 1P: WETLAND A Inflow Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.372 ac Peak Elev=969.99' Storage=4,654 cf 9.09 cfs 5.81 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: WETLAND A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.62 11,466 0 969.63 11,520 115 969.64 11,574 230 969.65 11,628 346 969.66 11,682 463 969.67 11,737 580 969.68 11,791 698 969.69 11,845 816 969.70 11,899 935 969.71 11,953 1,054 969.72 12,007 1,174 969.73 12,061 1,294 969.74 12,115 1,415 969.75 12,169 1,536 969.76 12,223 1,658 969.77 12,278 1,781 969.78 12,332 1,904 969.79 12,386 2,027 969.80 12,440 2,152 969.81 12,494 2,276 969.82 12,548 2,401 969.83 12,602 2,527 969.84 12,656 2,653 969.85 12,710 2,780 969.86 12,765 2,908 969.87 12,819 3,036 969.88 12,873 3,164 969.89 12,927 3,293 969.90 12,981 3,423 969.91 13,035 3,553 969.92 13,089 3,683 969.93 13,143 3,814 969.94 13,197 3,946 969.95 13,251 4,078 969.96 13,306 4,211 969.97 13,360 4,344 969.98 13,414 4,478 969.99 13,468 4,613 970.00 13,522 4,748 970.01 13,549 4,883 970.02 13,575 5,019 970.03 13,602 5,155 970.04 13,628 5,291 970.05 13,655 5,427 970.06 13,681 5,564 970.07 13,708 5,701 970.08 13,734 5,838 970.09 13,761 5,975 970.10 13,787 6,113 970.11 13,814 6,251 970.12 13,840 6,389 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.13 13,867 6,528 970.14 13,893 6,667 970.15 13,920 6,806 970.16 13,946 6,945 970.17 13,973 7,085 970.18 14,000 7,225 970.19 14,026 7,365 970.20 14,053 7,505 970.21 14,079 7,646 970.22 14,106 7,787 970.23 14,132 7,928 970.24 14,159 8,069 970.25 14,185 8,211 970.26 14,212 8,353 970.27 14,238 8,495 970.28 14,265 8,638 970.29 14,291 8,781 970.30 14,318 8,924 970.31 14,344 9,067 970.32 14,371 9,211 970.33 14,397 9,354 970.34 14,424 9,499 970.35 14,451 9,643 970.36 14,477 9,788 970.37 14,504 9,932 970.38 14,530 10,078 970.39 14,557 10,223 970.40 14,583 10,369 970.41 14,610 10,515 970.42 14,636 10,661 970.43 14,663 10,807 970.44 14,689 10,954 970.45 14,716 11,101 970.46 14,742 11,249 970.47 14,769 11,396 970.48 14,795 11,544 970.49 14,822 11,692 970.50 14,849 11,840 970.51 14,875 11,989 970.52 14,902 12,138 970.53 14,928 12,287 970.54 14,955 12,436 970.55 14,981 12,586 970.56 15,008 12,736 970.57 15,034 12,886 970.58 15,061 13,037 970.59 15,087 13,187 970.60 15,114 13,338 970.61 15,140 13,490 970.62 15,167 13,641 970.63 15,193 13,793 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: WETLAND A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.64 15,220 13,945 970.65 15,246 14,097 970.66 15,273 14,250 970.67 15,300 14,403 970.68 15,326 14,556 970.69 15,353 14,709 970.70 15,379 14,863 970.71 15,406 15,017 970.72 15,432 15,171 970.73 15,459 15,326 970.74 15,485 15,480 970.75 15,512 15,635 970.76 15,538 15,791 970.77 15,565 15,946 970.78 15,591 16,102 970.79 15,618 16,258 970.80 15,644 16,414 970.81 15,671 16,571 970.82 15,697 16,728 970.83 15,724 16,885 970.84 15,751 17,042 970.85 15,777 17,200 970.86 15,804 17,358 970.87 15,830 17,516 970.88 15,857 17,674 970.89 15,883 17,833 970.90 15,910 17,992 970.91 15,936 18,151 970.92 15,963 18,311 970.93 15,989 18,470 970.94 16,016 18,630 970.95 16,042 18,791 970.96 16,069 18,951 970.97 16,095 19,112 970.98 16,122 19,273 970.99 16,148 19,435 971.00 16,175 19,596 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 19HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=3,245 sf 100.00% Impervious Runoff Depth=4.02"Subcatchment EX1A: EX1A - DRAINS Tc=10.0 min CN=WQ Runoff=0.40 cfs 0.025 af Runoff Area=62,807 sf 11.61% Impervious Runoff Depth=2.46"Subcatchment EX1B: EX1B - DRAINS Tc=10.0 min CN=WQ Runoff=5.38 cfs 0.296 af Runoff Area=3,209 sf 0.00% Impervious Runoff Depth=2.26"Subcatchment EX1C: EX1C - DRAINS Tc=10.0 min CN=WQ Runoff=0.26 cfs 0.014 af Runoff Area=28,791 sf 7.91% Impervious Runoff Depth=2.40"Subcatchment EX2: EX2 - DRAINS SOUTH Tc=10.0 min CN=WQ Runoff=2.42 cfs 0.132 af Runoff Area=49,573 sf 17.90% Impervious Runoff Depth=2.57"Subcatchment OFFSITE A: OFFSITE - Tc=10.0 min CN=WQ Runoff=4.39 cfs 0.244 af Runoff Area=74,865 sf 8.12% Impervious Runoff Depth=2.40"Subcatchment OFFSITE B: OFFSITE B- Tc=10.0 min CN=WQ Runoff=6.30 cfs 0.344 af Inflow=11.67 cfs 0.898 afReach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A Outflow=11.67 cfs 0.898 af Inflow=13.49 cfs 1.030 afReach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Outflow=13.49 cfs 1.030 af Peak Elev=970.19' Storage=7,423 cf Inflow=16.33 cfs 0.898 afPond 1P: WETLAND A Outflow=11.67 cfs 0.898 af Total Runoff Area = 5.108 ac Runoff Volume = 1.055 af Average Runoff Depth = 2.48" 87.52% Pervious = 4.470 ac 12.48% Impervious = 0.637 ac 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 20HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD Runoff = 0.40 cfs @ 12.17 hrs, Volume= 0.025 af, Depth= 4.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 3,245 98 Paved parking, HSG C 0 80 Pasture/grassland/range, Good, HSG D 3,245 Weighted Average 3,245 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=3,245 sf Runoff Volume=0.025 af Runoff Depth=4.02" Tc=10.0 min CN=WQ 0.40 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 21HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1B: EX1B - DRAINS SOUTH TO WETLAND A Runoff = 5.38 cfs @ 12.18 hrs, Volume= 0.296 af, Depth= 2.46" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 7,290 98 Paved parking, HSG C 55,517 80 Pasture/grassland/range, Good, HSG D 62,807 Weighted Average 55,517 88.39% Pervious Area 7,290 11.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1B: EX1B - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=62,807 sf Runoff Volume=0.296 af Runoff Depth=2.46" Tc=10.0 min CN=WQ 5.38 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 22HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1C: EX1C - DRAINS SOUTH TO WETLAND A Runoff = 0.26 cfs @ 12.18 hrs, Volume= 0.014 af, Depth= 2.26" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 0 98 Paved parking, HSG C 3,209 80 Pasture/grassland/range, Good, HSG D 3,209 Weighted Average 3,209 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1C: EX1C - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=3,209 sf Runoff Volume=0.014 af Runoff Depth=2.26" Tc=10.0 min CN=WQ 0.26 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 23HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX2: EX2 - DRAINS SOUTH TO WETLAND B Runoff = 2.42 cfs @ 12.18 hrs, Volume= 0.132 af, Depth= 2.40" Routed to Reach DA3 : DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 2,278 98 Paved parking, HSG C 26,513 80 Pasture/grassland/range, Good, HSG D 28,791 Weighted Average 26,513 92.09% Pervious Area 2,278 7.91% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX2: EX2 - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=28,791 sf Runoff Volume=0.132 af Runoff Depth=2.40" Tc=10.0 min CN=WQ 2.42 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 24HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A Runoff = 4.39 cfs @ 12.18 hrs, Volume= 0.244 af, Depth= 2.57" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 8,875 98 Paved parking, HSG C 40,698 80 Pasture/grassland/range, Good, HSG D 49,573 Weighted Average 40,698 82.10% Pervious Area 8,875 17.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=49,573 sf Runoff Volume=0.244 af Runoff Depth=2.57" Tc=10.0 min CN=WQ 4.39 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 25HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A Runoff = 6.30 cfs @ 12.18 hrs, Volume= 0.344 af, Depth= 2.40" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 6,076 98 Paved parking, HSG C 68,789 80 Pasture/grassland/range, Good, HSG D 74,865 Weighted Average 68,789 91.88% Pervious Area 6,076 8.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=74,865 sf Runoff Volume=0.344 af Runoff Depth=2.40" Tc=10.0 min CN=WQ 6.30 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 26HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.372 ac, 11.68% Impervious, Inflow Depth = 2.46" for 10y 24hr AT-14 event Inflow = 11.67 cfs @ 12.26 hrs, Volume= 0.898 af Outflow = 11.67 cfs @ 12.26 hrs, Volume= 0.898 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA3 : DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.372 ac 11.67 cfs 11.67 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 27HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.033 ac, 11.18% Impervious, Inflow Depth = 2.46" for 10y 24hr AT-14 event Inflow = 13.49 cfs @ 12.24 hrs, Volume= 1.030 af Outflow = 13.49 cfs @ 12.24 hrs, Volume= 1.030 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=5.033 ac 13.49 cfs 13.49 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 28HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: WETLAND A Inflow Area = 4.372 ac, 11.68% Impervious, Inflow Depth = 2.46" for 10y 24hr AT-14 event Inflow = 16.33 cfs @ 12.18 hrs, Volume= 0.898 af Outflow = 11.67 cfs @ 12.26 hrs, Volume= 0.898 af, Atten= 29%, Lag= 5.0 min Primary = 11.67 cfs @ 12.26 hrs, Volume= 0.898 af Routed to Reach DA1 : DRAINAGE AREA 1-TOTAL TO WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 970.19' @ 12.26 hrs Surf.Area= 14,037 sf Storage= 7,423 cf Plug-Flow detention time= 20.9 min calculated for 0.898 af (100% of inflow) Center-of-Mass det. time= 20.9 min ( 818.2 - 797.3 ) Volume Invert Avail.Storage Storage Description #1 969.62' 19,596 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 969.62 11,466 0 0 970.00 13,522 4,748 4,748 971.00 16,175 14,849 19,596 Device Routing Invert Outlet Devices #1 Primary 969.62'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=11.66 cfs @ 12.26 hrs HW=970.19' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 11.66 cfs @ 2.03 fps) 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 29HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 1P: WETLAND A Inflow Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.372 ac Peak Elev=970.19' Storage=7,423 cf 16.33 cfs 11.67 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 30HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: WETLAND A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.62 11,466 0 969.63 11,520 115 969.64 11,574 230 969.65 11,628 346 969.66 11,682 463 969.67 11,737 580 969.68 11,791 698 969.69 11,845 816 969.70 11,899 935 969.71 11,953 1,054 969.72 12,007 1,174 969.73 12,061 1,294 969.74 12,115 1,415 969.75 12,169 1,536 969.76 12,223 1,658 969.77 12,278 1,781 969.78 12,332 1,904 969.79 12,386 2,027 969.80 12,440 2,152 969.81 12,494 2,276 969.82 12,548 2,401 969.83 12,602 2,527 969.84 12,656 2,653 969.85 12,710 2,780 969.86 12,765 2,908 969.87 12,819 3,036 969.88 12,873 3,164 969.89 12,927 3,293 969.90 12,981 3,423 969.91 13,035 3,553 969.92 13,089 3,683 969.93 13,143 3,814 969.94 13,197 3,946 969.95 13,251 4,078 969.96 13,306 4,211 969.97 13,360 4,344 969.98 13,414 4,478 969.99 13,468 4,613 970.00 13,522 4,748 970.01 13,549 4,883 970.02 13,575 5,019 970.03 13,602 5,155 970.04 13,628 5,291 970.05 13,655 5,427 970.06 13,681 5,564 970.07 13,708 5,701 970.08 13,734 5,838 970.09 13,761 5,975 970.10 13,787 6,113 970.11 13,814 6,251 970.12 13,840 6,389 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.13 13,867 6,528 970.14 13,893 6,667 970.15 13,920 6,806 970.16 13,946 6,945 970.17 13,973 7,085 970.18 14,000 7,225 970.19 14,026 7,365 970.20 14,053 7,505 970.21 14,079 7,646 970.22 14,106 7,787 970.23 14,132 7,928 970.24 14,159 8,069 970.25 14,185 8,211 970.26 14,212 8,353 970.27 14,238 8,495 970.28 14,265 8,638 970.29 14,291 8,781 970.30 14,318 8,924 970.31 14,344 9,067 970.32 14,371 9,211 970.33 14,397 9,354 970.34 14,424 9,499 970.35 14,451 9,643 970.36 14,477 9,788 970.37 14,504 9,932 970.38 14,530 10,078 970.39 14,557 10,223 970.40 14,583 10,369 970.41 14,610 10,515 970.42 14,636 10,661 970.43 14,663 10,807 970.44 14,689 10,954 970.45 14,716 11,101 970.46 14,742 11,249 970.47 14,769 11,396 970.48 14,795 11,544 970.49 14,822 11,692 970.50 14,849 11,840 970.51 14,875 11,989 970.52 14,902 12,138 970.53 14,928 12,287 970.54 14,955 12,436 970.55 14,981 12,586 970.56 15,008 12,736 970.57 15,034 12,886 970.58 15,061 13,037 970.59 15,087 13,187 970.60 15,114 13,338 970.61 15,140 13,490 970.62 15,167 13,641 970.63 15,193 13,793 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 31HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: WETLAND A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.64 15,220 13,945 970.65 15,246 14,097 970.66 15,273 14,250 970.67 15,300 14,403 970.68 15,326 14,556 970.69 15,353 14,709 970.70 15,379 14,863 970.71 15,406 15,017 970.72 15,432 15,171 970.73 15,459 15,326 970.74 15,485 15,480 970.75 15,512 15,635 970.76 15,538 15,791 970.77 15,565 15,946 970.78 15,591 16,102 970.79 15,618 16,258 970.80 15,644 16,414 970.81 15,671 16,571 970.82 15,697 16,728 970.83 15,724 16,885 970.84 15,751 17,042 970.85 15,777 17,200 970.86 15,804 17,358 970.87 15,830 17,516 970.88 15,857 17,674 970.89 15,883 17,833 970.90 15,910 17,992 970.91 15,936 18,151 970.92 15,963 18,311 970.93 15,989 18,470 970.94 16,016 18,630 970.95 16,042 18,791 970.96 16,069 18,951 970.97 16,095 19,112 970.98 16,122 19,273 970.99 16,148 19,435 971.00 16,175 19,596 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 32HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=3,245 sf 100.00% Impervious Runoff Depth=7.12"Subcatchment EX1A: EX1A - DRAINS Tc=10.0 min CN=WQ Runoff=0.70 cfs 0.044 af Runoff Area=62,807 sf 11.61% Impervious Runoff Depth=5.27"Subcatchment EX1B: EX1B - DRAINS Tc=10.0 min CN=WQ Runoff=11.33 cfs 0.633 af Runoff Area=3,209 sf 0.00% Impervious Runoff Depth=5.03"Subcatchment EX1C: EX1C - DRAINS Tc=10.0 min CN=WQ Runoff=0.56 cfs 0.031 af Runoff Area=28,791 sf 7.91% Impervious Runoff Depth=5.19"Subcatchment EX2: EX2 - DRAINS SOUTH Tc=10.0 min CN=WQ Runoff=5.15 cfs 0.286 af Runoff Area=49,573 sf 17.90% Impervious Runoff Depth=5.40"Subcatchment OFFSITE A: OFFSITE - Tc=10.0 min CN=WQ Runoff=9.07 cfs 0.512 af Runoff Area=74,865 sf 8.12% Impervious Runoff Depth=5.20"Subcatchment OFFSITE B: OFFSITE B- Tc=10.0 min CN=WQ Runoff=13.40 cfs 0.744 af Inflow=26.30 cfs 1.921 afReach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A Outflow=26.30 cfs 1.921 af Inflow=30.43 cfs 2.207 afReach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Outflow=30.43 cfs 2.207 af Peak Elev=970.61' Storage=13,449 cf Inflow=34.36 cfs 1.921 afPond 1P: WETLAND A Outflow=26.30 cfs 1.921 af Total Runoff Area = 5.108 ac Runoff Volume = 2.251 af Average Runoff Depth = 5.29" 87.52% Pervious = 4.470 ac 12.48% Impervious = 0.637 ac 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 33HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD Runoff = 0.70 cfs @ 12.17 hrs, Volume= 0.044 af, Depth= 7.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 3,245 98 Paved parking, HSG C 0 80 Pasture/grassland/range, Good, HSG D 3,245 Weighted Average 3,245 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=3,245 sf Runoff Volume=0.044 af Runoff Depth=7.12" Tc=10.0 min CN=WQ 0.70 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 34HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1B: EX1B - DRAINS SOUTH TO WETLAND A Runoff = 11.33 cfs @ 12.17 hrs, Volume= 0.633 af, Depth= 5.27" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 7,290 98 Paved parking, HSG C 55,517 80 Pasture/grassland/range, Good, HSG D 62,807 Weighted Average 55,517 88.39% Pervious Area 7,290 11.61% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1B: EX1B - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=62,807 sf Runoff Volume=0.633 af Runoff Depth=5.27" Tc=10.0 min CN=WQ 11.33 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 35HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX1C: EX1C - DRAINS SOUTH TO WETLAND A Runoff = 0.56 cfs @ 12.17 hrs, Volume= 0.031 af, Depth= 5.03" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 0 98 Paved parking, HSG C 3,209 80 Pasture/grassland/range, Good, HSG D 3,209 Weighted Average 3,209 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX1C: EX1C - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=3,209 sf Runoff Volume=0.031 af Runoff Depth=5.03" Tc=10.0 min CN=WQ 0.56 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 36HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment EX2: EX2 - DRAINS SOUTH TO WETLAND B Runoff = 5.15 cfs @ 12.17 hrs, Volume= 0.286 af, Depth= 5.19" Routed to Reach DA3 : DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 2,278 98 Paved parking, HSG C 26,513 80 Pasture/grassland/range, Good, HSG D 28,791 Weighted Average 26,513 92.09% Pervious Area 2,278 7.91% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment EX2: EX2 - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=28,791 sf Runoff Volume=0.286 af Runoff Depth=5.19" Tc=10.0 min CN=WQ 5.15 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 37HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A Runoff = 9.07 cfs @ 12.17 hrs, Volume= 0.512 af, Depth= 5.40" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 8,875 98 Paved parking, HSG C 40,698 80 Pasture/grassland/range, Good, HSG D 49,573 Weighted Average 40,698 82.10% Pervious Area 8,875 17.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=49,573 sf Runoff Volume=0.512 af Runoff Depth=5.40" Tc=10.0 min CN=WQ 9.07 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 38HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A Runoff = 13.40 cfs @ 12.17 hrs, Volume= 0.744 af, Depth= 5.20" Routed to Pond 1P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 6,076 98 Paved parking, HSG C 68,789 80 Pasture/grassland/range, Good, HSG D 74,865 Weighted Average 68,789 91.88% Pervious Area 6,076 8.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=74,865 sf Runoff Volume=0.744 af Runoff Depth=5.20" Tc=10.0 min CN=WQ 13.40 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 39HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.372 ac, 11.68% Impervious, Inflow Depth = 5.27" for 100y 24hr AT-14 event Inflow = 26.30 cfs @ 12.24 hrs, Volume= 1.921 af Outflow = 26.30 cfs @ 12.24 hrs, Volume= 1.921 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA3 : DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=4.372 ac 26.30 cfs 26.30 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 40HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.033 ac, 11.18% Impervious, Inflow Depth = 5.26" for 100y 24hr AT-14 event Inflow = 30.43 cfs @ 12.23 hrs, Volume= 2.207 af Outflow = 30.43 cfs @ 12.23 hrs, Volume= 2.207 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.033 ac 30.43 cfs 30.43 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 41HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: WETLAND A Inflow Area = 4.372 ac, 11.68% Impervious, Inflow Depth = 5.27" for 100y 24hr AT-14 event Inflow = 34.36 cfs @ 12.17 hrs, Volume= 1.921 af Outflow = 26.30 cfs @ 12.24 hrs, Volume= 1.921 af, Atten= 23%, Lag= 4.2 min Primary = 26.30 cfs @ 12.24 hrs, Volume= 1.921 af Routed to Reach DA1 : DRAINAGE AREA 1-TOTAL TO WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 970.61' @ 12.24 hrs Surf.Area= 15,133 sf Storage= 13,449 cf Plug-Flow detention time= 16.6 min calculated for 1.921 af (100% of inflow) Center-of-Mass det. time= 16.6 min ( 801.2 - 784.6 ) Volume Invert Avail.Storage Storage Description #1 969.62' 19,596 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 969.62 11,466 0 0 970.00 13,522 4,748 4,748 971.00 16,175 14,849 19,596 Device Routing Invert Outlet Devices #1 Primary 969.62'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=26.28 cfs @ 12.24 hrs HW=970.61' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 26.28 cfs @ 2.66 fps) 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 42HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 1P: WETLAND A Inflow Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=4.372 ac Peak Elev=970.61' Storage=13,449 cf 34.36 cfs 26.30 cfs 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 43HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: WETLAND A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.62 11,466 0 969.63 11,520 115 969.64 11,574 230 969.65 11,628 346 969.66 11,682 463 969.67 11,737 580 969.68 11,791 698 969.69 11,845 816 969.70 11,899 935 969.71 11,953 1,054 969.72 12,007 1,174 969.73 12,061 1,294 969.74 12,115 1,415 969.75 12,169 1,536 969.76 12,223 1,658 969.77 12,278 1,781 969.78 12,332 1,904 969.79 12,386 2,027 969.80 12,440 2,152 969.81 12,494 2,276 969.82 12,548 2,401 969.83 12,602 2,527 969.84 12,656 2,653 969.85 12,710 2,780 969.86 12,765 2,908 969.87 12,819 3,036 969.88 12,873 3,164 969.89 12,927 3,293 969.90 12,981 3,423 969.91 13,035 3,553 969.92 13,089 3,683 969.93 13,143 3,814 969.94 13,197 3,946 969.95 13,251 4,078 969.96 13,306 4,211 969.97 13,360 4,344 969.98 13,414 4,478 969.99 13,468 4,613 970.00 13,522 4,748 970.01 13,549 4,883 970.02 13,575 5,019 970.03 13,602 5,155 970.04 13,628 5,291 970.05 13,655 5,427 970.06 13,681 5,564 970.07 13,708 5,701 970.08 13,734 5,838 970.09 13,761 5,975 970.10 13,787 6,113 970.11 13,814 6,251 970.12 13,840 6,389 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.13 13,867 6,528 970.14 13,893 6,667 970.15 13,920 6,806 970.16 13,946 6,945 970.17 13,973 7,085 970.18 14,000 7,225 970.19 14,026 7,365 970.20 14,053 7,505 970.21 14,079 7,646 970.22 14,106 7,787 970.23 14,132 7,928 970.24 14,159 8,069 970.25 14,185 8,211 970.26 14,212 8,353 970.27 14,238 8,495 970.28 14,265 8,638 970.29 14,291 8,781 970.30 14,318 8,924 970.31 14,344 9,067 970.32 14,371 9,211 970.33 14,397 9,354 970.34 14,424 9,499 970.35 14,451 9,643 970.36 14,477 9,788 970.37 14,504 9,932 970.38 14,530 10,078 970.39 14,557 10,223 970.40 14,583 10,369 970.41 14,610 10,515 970.42 14,636 10,661 970.43 14,663 10,807 970.44 14,689 10,954 970.45 14,716 11,101 970.46 14,742 11,249 970.47 14,769 11,396 970.48 14,795 11,544 970.49 14,822 11,692 970.50 14,849 11,840 970.51 14,875 11,989 970.52 14,902 12,138 970.53 14,928 12,287 970.54 14,955 12,436 970.55 14,981 12,586 970.56 15,008 12,736 970.57 15,034 12,886 970.58 15,061 13,037 970.59 15,087 13,187 970.60 15,114 13,338 970.61 15,140 13,490 970.62 15,167 13,641 970.63 15,193 13,793 21429- CHANHASSEN LOT SPLIT - EXISTING MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} Page 44HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: WETLAND A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.64 15,220 13,945 970.65 15,246 14,097 970.66 15,273 14,250 970.67 15,300 14,403 970.68 15,326 14,556 970.69 15,353 14,709 970.70 15,379 14,863 970.71 15,406 15,017 970.72 15,432 15,171 970.73 15,459 15,326 970.74 15,485 15,480 970.75 15,512 15,635 970.76 15,538 15,791 970.77 15,565 15,946 970.78 15,591 16,102 970.79 15,618 16,258 970.80 15,644 16,414 970.81 15,671 16,571 970.82 15,697 16,728 970.83 15,724 16,885 970.84 15,751 17,042 970.85 15,777 17,200 970.86 15,804 17,358 970.87 15,830 17,516 970.88 15,857 17,674 970.89 15,883 17,833 970.90 15,910 17,992 970.91 15,936 18,151 970.92 15,963 18,311 970.93 15,989 18,470 970.94 16,016 18,630 970.95 16,042 18,791 970.96 16,069 18,951 970.97 16,095 19,112 970.98 16,122 19,273 970.99 16,148 19,435 971.00 16,175 19,596 21429- CHANHASSEN LOT SPLIT - EXISTING Table of Contents21429- EXISTING Printed 1/28/2022Prepared by {enter your company name here} HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing 3 Area Listing (all nodes) 4 Soil Listing (all nodes) 5 Ground Covers (all nodes) 2y 24hr AT-14 Event 6 Node Listing 7 Subcat EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD 8 Subcat EX1B: EX1B - DRAINS SOUTH TO WETLAND A 9 Subcat EX1C: EX1C - DRAINS SOUTH TO WETLAND A 10 Subcat EX2: EX2 - DRAINS SOUTH TO WETLAND B 11 Subcat OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A 12 Subcat OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A 13 Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A 14 Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 15 Pond 1P: WETLAND A 10y 24hr AT-14 Event 19 Node Listing 20 Subcat EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD 21 Subcat EX1B: EX1B - DRAINS SOUTH TO WETLAND A 22 Subcat EX1C: EX1C - DRAINS SOUTH TO WETLAND A 23 Subcat EX2: EX2 - DRAINS SOUTH TO WETLAND B 24 Subcat OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A 25 Subcat OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A 26 Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A 27 Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 28 Pond 1P: WETLAND A 100y 24hr AT-14 Event 32 Node Listing 33 Subcat EX1A: EX1A - DRAINS EAST DOWN LAKE LUCY ROAD 34 Subcat EX1B: EX1B - DRAINS SOUTH TO WETLAND A 35 Subcat EX1C: EX1C - DRAINS SOUTH TO WETLAND A 36 Subcat EX2: EX2 - DRAINS SOUTH TO WETLAND B 37 Subcat OFFSITE A: OFFSITE - DRAINS SOUTH TO WETLAND A 38 Subcat OFFSITE B: OFFSITE B- DRAINS SOUTH TO WETLAND A 39 Reach DA1: DRAINAGE AREA 1-TOTAL TO WETLAND A 40 Reach DA3: DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 41 Pond 1P: WETLAND A OFFSITE B OFFSITE B - DRAINS SOUTH TO WETLAND OUTSITE A OFFSITE A - DRAINS SOUTH TO WETLAND B PR1A PR1A - DRAINS EAST ALONG STREET PR1B PR1B - DRAINS SOUTH TO WETLAND A PR1C PR1C - DRAINS SOUTH TO RAIN GARDEN PR2A PR2C - DRAINS SOUTH TO WETLAND B PR2B PR2B - DRAINS SOUTH TO RAIN GARDEN PR2C PR2C - DRAINS SOUTH TO RAIN GARDEN DA 1 DRAINAGE AREA 1- TOTAL TO WETLAND A DA 2 DA 2- TOTAL EX 2DA 3 PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 1P FILTRATION BASIN 1 2P FILTRATION BASIN 2 3P FILTRATION BASIN 3 4P WETLAND A Routing Diagram for 21429- PROPOSED Prepared by {enter your company name here}, Printed 2/17/2022 HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link 21429- CHANHASSEN LOT SPLIT - PROPOSED 21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 2HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 2y 24hr AT-14 MSE 24-hr 3 Default 24.00 1 2.94 2 2 10y 24hr AT-14 MSE 24-hr 3 Default 24.00 1 4.26 2 3 100y 24hr AT-14 MSE 24-hr 3 Default 24.00 1 7.36 2 21429- CHANHASSEN LOT SPLIT - PROPOSED 21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 3HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 4.212 80 Pasture/grassland/range, Good, HSG D (OFFSITE B, OUTSITE A, PR1B, PR1C, PR2A, PR2B, PR2C) 0.894 98 Paved parking, HSG C (OFFSITE B, OUTSITE A, PR1A, PR1B, PR1C, PR2B, PR2C) 5.106 83 TOTAL AREA 21429- CHANHASSEN LOT SPLIT - PROPOSED 21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 4HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 0.000 HSG B 0.894 HSG C OFFSITE B, OUTSITE A, PR1A, PR1B, PR1C, PR2B, PR2C 4.212 HSG D OFFSITE B, OUTSITE A, PR1B, PR1C, PR2A, PR2B, PR2C 0.000 Other 5.106 TOTAL AREA 21429- CHANHASSEN LOT SPLIT - PROPOSED 21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 5HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.000 4.212 0.000 4.212 Pasture/grassland/range, Good OF FS IT E B, O UT SI TE A, PR 1B , PR 1C , PR 2A , PR 2B , PR 2C 0.000 0.000 0.894 0.000 0.000 0.894 Paved parking OF FS IT E B, O UT SI TE A, PR 1A , PR 1B , PR 1C , 21429- CHANHASSEN LOT SPLIT - PROPOSED 21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 6HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Ground Covers (all nodes) (continued) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.000 0.894 4.212 0.000 5.106 TOTAL AREA 21429- CHANHASSEN LOT SPLIT - PROPOSED 21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 7HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Width (inches) Diam/Height (inches) Inside-Fill (inches) 1 1P 973.10 971.50 23.0 0.0696 0.012 0.0 6.0 0.0 2 2P 963.50 963.00 70.0 0.0071 0.012 0.0 6.0 0.0 3 3P 961.50 961.00 61.0 0.0082 0.012 0.0 6.0 0.0 4 4P 965.00 963.50 29.0 0.0517 0.011 0.0 6.0 0.0 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 8HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=74,865 sf 8.12% Impervious Runoff Depth=1.33"Subcatchment OFFSITE B: OFFSITE B - Tc=10.0 min CN=WQ Runoff=3.46 cfs 0.190 af Runoff Area=49,573 sf 17.90% Impervious Runoff Depth=1.47"Subcatchment OUTSITE A: OFFSITE A - Tc=10.0 min CN=WQ Runoff=2.50 cfs 0.140 af Runoff Area=3,248 sf 100.00% Impervious Runoff Depth=2.71"Subcatchment PR1A: PR1A - DRAINS Tc=10.0 min CN=WQ Runoff=0.28 cfs 0.017 af Runoff Area=30,432 sf 23.96% Impervious Runoff Depth=1.57"Subcatchment PR1B: PR1B - DRAINS Tc=10.0 min CN=WQ Runoff=1.61 cfs 0.091 af Runoff Area=34,488 sf 20.19% Impervious Runoff Depth=1.51"Subcatchment PR1C: PR1C - DRAINS Tc=10.0 min CN=WQ Runoff=1.77 cfs 0.100 af Runoff Area=6,877 sf 0.00% Impervious Runoff Depth=1.21"Subcatchment PR2A: PR2C - DRAINS Tc=10.0 min CN=WQ Runoff=0.29 cfs 0.016 af Runoff Area=9,970 sf 30.15% Impervious Runoff Depth=1.66"Subcatchment PR2B: PR2B - DRAINS Tc=10.0 min CN=WQ Runoff=0.55 cfs 0.032 af Runoff Area=12,962 sf 26.86% Impervious Runoff Depth=1.61"Subcatchment PR2C: PR2C - DRAINS Tc=10.0 min CN=WQ Runoff=0.70 cfs 0.040 af Inflow=1.31 cfs 0.338 afReach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A Outflow=1.31 cfs 0.338 af Inflow=0.00 cfs 0.000 afReach DA 2: DA 2- TOTAL EX 2 Outflow=0.00 cfs 0.000 af Inflow=3.40 cfs 0.494 afReach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Outflow=3.40 cfs 0.494 af Peak Elev=976.88' Storage=2,833 cf Inflow=1.77 cfs 0.100 afPond 1P: FILTRATION BASIN 1 Discarded=0.00 cfs 0.000 af Primary=0.10 cfs 0.057 af Outflow=0.10 cfs 0.057 af Peak Elev=967.24' Storage=1,378 cf Inflow=0.55 cfs 0.032 afPond 2P: FILTRATION BASIN 2 Discarded=0.00 cfs 0.000 af Primary=0.00 cfs 0.000 af Outflow=0.00 cfs 0.000 af Peak Elev=965.49' Storage=1,738 cf Inflow=0.70 cfs 0.040 afPond 3P: FILTRATION BASIN 3 Discarded=0.00 cfs 0.000 af Primary=0.00 cfs 0.000 af Outflow=0.00 cfs 0.000 af Peak Elev=970.07' Storage=5,333 cf Inflow=5.07 cfs 0.338 afPond 4P: WETLAND A Outflow=1.31 cfs 0.338 af Total Runoff Area = 5.106 ac Runoff Volume = 0.625 af Average Runoff Depth = 1.47" 82.49% Pervious = 4.212 ac 17.51% Impervious = 0.894 ac 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 9HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND Runoff = 3.46 cfs @ 12.18 hrs, Volume= 0.190 af, Depth= 1.33" Routed to Pond 4P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 6,076 98 Paved parking, HSG C 68,789 80 Pasture/grassland/range, Good, HSG D 74,865 Weighted Average 68,789 91.88% Pervious Area 6,076 8.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=74,865 sf Runoff Volume=0.190 af Runoff Depth=1.33" Tc=10.0 min CN=WQ 3.46 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 10HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B Runoff = 2.50 cfs @ 12.18 hrs, Volume= 0.140 af, Depth= 1.47" Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 8,875 98 Paved parking, HSG C 40,698 80 Pasture/grassland/range, Good, HSG D 49,573 Weighted Average 40,698 82.10% Pervious Area 8,875 17.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=49,573 sf Runoff Volume=0.140 af Runoff Depth=1.47" Tc=10.0 min CN=WQ 2.50 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 11HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1A: PR1A - DRAINS EAST ALONG STREET Runoff = 0.28 cfs @ 12.17 hrs, Volume= 0.017 af, Depth= 2.71" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 3,248 98 Paved parking, HSG C 0 80 Pasture/grassland/range, Good, HSG D 3,248 Weighted Average 3,248 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1A: PR1A - DRAINS EAST ALONG STREET Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=3,248 sf Runoff Volume=0.017 af Runoff Depth=2.71" Tc=10.0 min CN=WQ 0.28 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 12HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1B: PR1B - DRAINS SOUTH TO WETLAND A Runoff = 1.61 cfs @ 12.18 hrs, Volume= 0.091 af, Depth= 1.57" Routed to Pond 4P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 7,290 98 Paved parking, HSG C 23,142 80 Pasture/grassland/range, Good, HSG D 30,432 Weighted Average 23,142 76.04% Pervious Area 7,290 23.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1B: PR1B - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=30,432 sf Runoff Volume=0.091 af Runoff Depth=1.57" Tc=10.0 min CN=WQ 1.61 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 13HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN Runoff = 1.77 cfs @ 12.18 hrs, Volume= 0.100 af, Depth= 1.51" Routed to Pond 1P : FILTRATION BASIN 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 6,962 98 Paved parking, HSG C 27,526 80 Pasture/grassland/range, Good, HSG D 34,488 Weighted Average 27,526 79.81% Pervious Area 6,962 20.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=34,488 sf Runoff Volume=0.100 af Runoff Depth=1.51" Tc=10.0 min CN=WQ 1.77 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 14HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2A: PR2C - DRAINS SOUTH TO WETLAND B Runoff = 0.29 cfs @ 12.18 hrs, Volume= 0.016 af, Depth= 1.21" Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 0 98 Paved parking, HSG C 6,877 80 Pasture/grassland/range, Good, HSG D 6,877 Weighted Average 6,877 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2A: PR2C - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=6,877 sf Runoff Volume=0.016 af Runoff Depth=1.21" Tc=10.0 min CN=WQ 0.29 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 15HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN Runoff = 0.55 cfs @ 12.18 hrs, Volume= 0.032 af, Depth= 1.66" Routed to Pond 2P : FILTRATION BASIN 2 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 3,006 98 Paved parking, HSG C 6,964 80 Pasture/grassland/range, Good, HSG D 9,970 Weighted Average 6,964 69.85% Pervious Area 3,006 30.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=9,970 sf Runoff Volume=0.032 af Runoff Depth=1.66" Tc=10.0 min CN=WQ 0.55 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 16HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN Runoff = 0.70 cfs @ 12.18 hrs, Volume= 0.040 af, Depth= 1.61" Routed to Pond 3P : FILTRATION BASIN 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 3,481 98 Paved parking, HSG C 9,481 80 Pasture/grassland/range, Good, HSG D 12,962 Weighted Average 9,481 73.14% Pervious Area 3,481 26.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94" Runoff Area=12,962 sf Runoff Volume=0.040 af Runoff Depth=1.61" Tc=10.0 min CN=WQ 0.70 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 17HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 3.209 ac, 14.54% Impervious, Inflow Depth = 1.26" for 2y 24hr AT-14 event Inflow = 1.31 cfs @ 12.52 hrs, Volume= 0.338 af Outflow = 1.31 cfs @ 12.52 hrs, Volume= 0.338 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=3.209 ac 1.31 cfs 1.31 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 18HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 2: DA 2- TOTAL EX 2 [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.526 ac, 28.29% Impervious, Inflow Depth = 0.00" for 2y 24hr AT-14 event Inflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 2: DA 2- TOTAL EX 2 Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.526 ac 0.00 cfs 0.00 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 19HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.031 ac, 16.28% Impervious, Inflow Depth = 1.18" for 2y 24hr AT-14 event Inflow = 3.40 cfs @ 12.19 hrs, Volume= 0.494 af Outflow = 3.40 cfs @ 12.19 hrs, Volume= 0.494 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=5.031 ac 3.40 cfs 3.40 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 20HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: FILTRATION BASIN 1 Inflow Area = 0.792 ac, 20.19% Impervious, Inflow Depth = 1.51" for 2y 24hr AT-14 event Inflow = 1.77 cfs @ 12.18 hrs, Volume= 0.100 af Outflow = 0.10 cfs @ 13.59 hrs, Volume= 0.057 af, Atten= 94%, Lag= 84.7 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 0.10 cfs @ 13.59 hrs, Volume= 0.057 af Routed to Pond 4P : WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 976.88' @ 13.59 hrs Surf.Area= 2,702 sf Storage= 2,833 cf Plug-Flow detention time= 279.3 min calculated for 0.057 af (57% of inflow) Center-of-Mass det. time= 191.9 min ( 989.8 - 797.9 ) Volume Invert Avail.Storage Storage Description #1 975.60' 4,563 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 975.60 1,701 0 0 976.00 2,043 749 749 977.00 2,793 2,418 3,167 977.50 2,793 1,397 4,563 Device Routing Invert Outlet Devices #1 Primary 973.10'6.0" Round OUTLET PIPE L= 23.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 973.10' / 971.50' S= 0.0696 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 976.50'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 977.10'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 975.60'1.600 in/hr Exfiltration over Surface area above 973.10' Excluded Surface area = 0 sf #5 Device 2 973.10'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 975.60'0.600 in/hr Exfiltration-Infiltration into Rock over Surface area from 972.50' - 973.10' Excluded Surface area = 0 sf 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 21HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.60' (Free Discharge) 6=Exfiltration-Infiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=0.10 cfs @ 13.59 hrs HW=976.88' (Free Discharge) 1=OUTLET PIPE (Passes 0.10 cfs of 1.57 cfs potential flow) 2=RIM- Orifice/Grate (Passes 0.10 cfs of 0.86 cfs potential flow) 5=Orifice 6" draintile (Passes 0.10 cfs of 0.58 cfs potential flow) 4=Exfiltration (Exfiltration Controls 0.10 cfs) 3=EOF ( Controls 0.00 cfs) Pond 1P: FILTRATION BASIN 1 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.792 ac Peak Elev=976.88' Storage=2,833 cf 1.77 cfs 0.10 cfs 0.00 cfs0.10 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 22HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 975.60 1,701 0 975.61 1,710 17 975.62 1,718 34 975.63 1,727 51 975.64 1,735 69 975.65 1,744 86 975.66 1,752 104 975.67 1,761 121 975.68 1,769 139 975.69 1,778 157 975.70 1,787 174 975.71 1,795 192 975.72 1,804 210 975.73 1,812 228 975.74 1,821 247 975.75 1,829 265 975.76 1,838 283 975.77 1,846 302 975.78 1,855 320 975.79 1,863 339 975.80 1,872 357 975.81 1,881 376 975.82 1,889 395 975.83 1,898 414 975.84 1,906 433 975.85 1,915 452 975.86 1,923 471 975.87 1,932 490 975.88 1,940 510 975.89 1,949 529 975.90 1,957 549 975.91 1,966 568 975.92 1,975 588 975.93 1,983 608 975.94 1,992 628 975.95 2,000 648 975.96 2,009 668 975.97 2,017 688 975.98 2,026 708 975.99 2,034 728 976.00 2,043 749 976.01 2,050 769 976.02 2,058 790 976.03 2,065 810 976.04 2,073 831 976.05 2,081 852 976.06 2,088 873 976.07 2,096 894 976.08 2,103 915 976.09 2,111 936 976.10 2,118 957 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 976.11 2,126 978 976.12 2,133 999 976.13 2,140 1,021 976.14 2,148 1,042 976.15 2,155 1,064 976.16 2,163 1,085 976.17 2,171 1,107 976.18 2,178 1,129 976.19 2,186 1,151 976.20 2,193 1,172 976.21 2,201 1,194 976.22 2,208 1,216 976.23 2,216 1,239 976.24 2,223 1,261 976.25 2,231 1,283 976.26 2,238 1,305 976.27 2,245 1,328 976.28 2,253 1,350 976.29 2,261 1,373 976.30 2,268 1,395 976.31 2,276 1,418 976.32 2,283 1,441 976.33 2,291 1,464 976.34 2,298 1,487 976.35 2,306 1,510 976.36 2,313 1,533 976.37 2,321 1,556 976.38 2,328 1,579 976.39 2,335 1,603 976.40 2,343 1,626 976.41 2,350 1,649 976.42 2,358 1,673 976.43 2,366 1,697 976.44 2,373 1,720 976.45 2,381 1,744 976.46 2,388 1,768 976.47 2,396 1,792 976.48 2,403 1,816 976.49 2,411 1,840 976.50 2,418 1,864 976.51 2,425 1,888 976.52 2,433 1,913 976.53 2,440 1,937 976.54 2,448 1,961 976.55 2,456 1,986 976.56 2,463 2,010 976.57 2,471 2,035 976.58 2,478 2,060 976.59 2,486 2,085 976.60 2,493 2,110 976.61 2,501 2,135 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 23HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 976.62 2,508 2,160 976.63 2,515 2,185 976.64 2,523 2,210 976.65 2,530 2,235 976.66 2,538 2,261 976.67 2,546 2,286 976.68 2,553 2,311 976.69 2,561 2,337 976.70 2,568 2,363 976.71 2,576 2,388 976.72 2,583 2,414 976.73 2,591 2,440 976.74 2,598 2,466 976.75 2,606 2,492 976.76 2,613 2,518 976.77 2,620 2,544 976.78 2,628 2,570 976.79 2,636 2,597 976.80 2,643 2,623 976.81 2,651 2,650 976.82 2,658 2,676 976.83 2,666 2,703 976.84 2,673 2,730 976.85 2,681 2,756 976.86 2,688 2,783 976.87 2,696 2,810 976.88 2,703 2,837 976.89 2,710 2,864 976.90 2,718 2,891 976.91 2,725 2,918 976.92 2,733 2,946 976.93 2,741 2,973 976.94 2,748 3,001 976.95 2,756 3,028 976.96 2,763 3,056 976.97 2,771 3,083 976.98 2,778 3,111 976.99 2,786 3,139 977.00 2,793 3,167 977.01 2,793 3,195 977.02 2,793 3,223 977.03 2,793 3,251 977.04 2,793 3,279 977.05 2,793 3,306 977.06 2,793 3,334 977.07 2,793 3,362 977.08 2,793 3,390 977.09 2,793 3,418 977.10 2,793 3,446 977.11 2,793 3,474 977.12 2,793 3,502 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 977.13 2,793 3,530 977.14 2,793 3,558 977.15 2,793 3,586 977.16 2,793 3,614 977.17 2,793 3,642 977.18 2,793 3,670 977.19 2,793 3,697 977.20 2,793 3,725 977.21 2,793 3,753 977.22 2,793 3,781 977.23 2,793 3,809 977.24 2,793 3,837 977.25 2,793 3,865 977.26 2,793 3,893 977.27 2,793 3,921 977.28 2,793 3,949 977.29 2,793 3,977 977.30 2,793 4,005 977.31 2,793 4,033 977.32 2,793 4,061 977.33 2,793 4,088 977.34 2,793 4,116 977.35 2,793 4,144 977.36 2,793 4,172 977.37 2,793 4,200 977.38 2,793 4,228 977.39 2,793 4,256 977.40 2,793 4,284 977.41 2,793 4,312 977.42 2,793 4,340 977.43 2,793 4,368 977.44 2,793 4,396 977.45 2,793 4,424 977.46 2,793 4,452 977.47 2,793 4,480 977.48 2,793 4,507 977.49 2,793 4,535 977.50 2,793 4,563 977.51 2,793 4,563 977.52 2,793 4,563 977.53 2,793 4,563 977.54 2,793 4,563 977.55 2,793 4,563 977.56 2,793 4,563 977.57 2,793 4,563 977.58 2,793 4,563 977.59 2,793 4,563 977.60 2,793 4,563 977.61 2,793 4,563 977.62 2,793 4,563 977.63 2,793 4,563 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 24HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 977.64 2,793 4,563 977.65 2,793 4,563 977.66 2,793 4,563 977.67 2,793 4,563 977.68 2,793 4,563 977.69 2,793 4,563 977.70 2,793 4,563 977.71 2,793 4,563 977.72 2,793 4,563 977.73 2,793 4,563 977.74 2,793 4,563 977.75 2,793 4,563 977.76 2,793 4,563 977.77 2,793 4,563 977.78 2,793 4,563 977.79 2,793 4,563 977.80 2,793 4,563 977.81 2,793 4,563 977.82 2,793 4,563 977.83 2,793 4,563 977.84 2,793 4,563 977.85 2,793 4,563 977.86 2,793 4,563 977.87 2,793 4,563 977.88 2,793 4,563 977.89 2,793 4,563 977.90 2,793 4,563 977.91 2,793 4,563 977.92 2,793 4,563 977.93 2,793 4,563 977.94 2,793 4,563 977.95 2,793 4,563 977.96 2,793 4,563 977.97 2,793 4,563 977.98 2,793 4,563 977.99 2,793 4,563 978.00 2,793 4,563 978.01 2,793 4,563 978.02 2,793 4,563 978.03 2,793 4,563 978.04 2,793 4,563 978.05 2,793 4,563 978.06 2,793 4,563 978.07 2,793 4,563 978.08 2,793 4,563 978.09 2,793 4,563 978.10 2,793 4,563 978.11 2,793 4,563 978.12 2,793 4,563 978.13 2,793 4,563 978.14 2,793 4,563 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 978.15 2,793 4,563 978.16 2,793 4,563 978.17 2,793 4,563 978.18 2,793 4,563 978.19 2,793 4,563 978.20 2,793 4,563 978.21 2,793 4,563 978.22 2,793 4,563 978.23 2,793 4,563 978.24 2,793 4,563 978.25 2,793 4,563 978.26 2,793 4,563 978.27 2,793 4,563 978.28 2,793 4,563 978.29 2,793 4,563 978.30 2,793 4,563 978.31 2,793 4,563 978.32 2,793 4,563 978.33 2,793 4,563 978.34 2,793 4,563 978.35 2,793 4,563 978.36 2,793 4,563 978.37 2,793 4,563 978.38 2,793 4,563 978.39 2,793 4,563 978.40 2,793 4,563 978.41 2,793 4,563 978.42 2,793 4,563 978.43 2,793 4,563 978.44 2,793 4,563 978.45 2,793 4,563 978.46 2,793 4,563 978.47 2,793 4,563 978.48 2,793 4,563 978.49 2,793 4,563 978.50 2,793 4,563 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 25HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: FILTRATION BASIN 2 Inflow Area = 0.229 ac, 30.15% Impervious, Inflow Depth = 1.66" for 2y 24hr AT-14 event Inflow = 0.55 cfs @ 12.18 hrs, Volume= 0.032 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach DA 2 : DA 2- TOTAL EX 2 Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 967.24' @ 24.57 hrs Surf.Area= 1,800 sf Storage= 1,378 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 966.00' 14,363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 966.00 521 0 0 967.00 1,462 992 992 968.00 2,890 2,176 3,168 969.00 4,875 3,883 7,050 970.50 4,875 7,313 14,363 Device Routing Invert Outlet Devices #1 Primary 963.50'6.0" Round OUTLET PIPE L= 70.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 963.50' / 963.00' S= 0.0071 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 968.00'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 970.25'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 966.00'1.600 in/hr Exfiltration over Surface area above 963.50' Excluded Surface area = 0 sf #5 Device 2 963.50'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 966.00'0.600 in/hr Exfiltration into Rock over Surface area from 962.90' - 963.50' Excluded Surface area = 0 sf 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 26HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=966.00' (Free Discharge) 6=Exfiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=966.00' (Free Discharge) 1=OUTLET PIPE (Passes 0.00 cfs of 0.98 cfs potential flow) 2=RIM- Orifice/Grate ( Controls 0.00 cfs) 5=Orifice 6" draintile ( Controls 0.00 cfs) 4=Exfiltration (Passes 0.00 cfs of 0.02 cfs potential flow) 3=EOF ( Controls 0.00 cfs) Pond 2P: FILTRATION BASIN 2 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.229 ac Peak Elev=967.24' Storage=1,378 cf 0.55 cfs 0.00 cfs 0.00 cfs 0.00 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 27HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.00 521 0 966.01 530 5 966.02 540 11 966.03 549 16 966.04 559 22 966.05 568 27 966.06 577 33 966.07 587 39 966.08 596 45 966.09 606 51 966.10 615 57 966.11 625 63 966.12 634 69 966.13 643 76 966.14 653 82 966.15 662 89 966.16 672 95 966.17 681 102 966.18 690 109 966.19 700 116 966.20 709 123 966.21 719 130 966.22 728 137 966.23 737 145 966.24 747 152 966.25 756 160 966.26 766 167 966.27 775 175 966.28 784 183 966.29 794 191 966.30 803 199 966.31 813 207 966.32 822 215 966.33 832 223 966.34 841 232 966.35 850 240 966.36 860 249 966.37 869 257 966.38 879 266 966.39 888 275 966.40 897 284 966.41 907 293 966.42 916 302 966.43 926 311 966.44 935 320 966.45 944 330 966.46 954 339 966.47 963 349 966.48 973 358 966.49 982 368 966.50 992 378 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.51 1,001 388 966.52 1,010 398 966.53 1,020 408 966.54 1,029 419 966.55 1,039 429 966.56 1,048 439 966.57 1,057 450 966.58 1,067 460 966.59 1,076 471 966.60 1,086 482 966.61 1,095 493 966.62 1,104 504 966.63 1,114 515 966.64 1,123 526 966.65 1,133 537 966.66 1,142 549 966.67 1,151 560 966.68 1,161 572 966.69 1,170 583 966.70 1,180 595 966.71 1,189 607 966.72 1,199 619 966.73 1,208 631 966.74 1,217 643 966.75 1,227 655 966.76 1,236 668 966.77 1,246 680 966.78 1,255 693 966.79 1,264 705 966.80 1,274 718 966.81 1,283 731 966.82 1,293 744 966.83 1,302 757 966.84 1,311 770 966.85 1,321 783 966.86 1,330 796 966.87 1,340 809 966.88 1,349 823 966.89 1,358 836 966.90 1,368 850 966.91 1,377 864 966.92 1,387 878 966.93 1,396 891 966.94 1,406 905 966.95 1,415 920 966.96 1,424 934 966.97 1,434 948 966.98 1,443 962 966.99 1,453 977 967.00 1,462 992 967.01 1,476 1,006 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 28HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.02 1,491 1,021 967.03 1,505 1,036 967.04 1,519 1,051 967.05 1,533 1,066 967.06 1,548 1,082 967.07 1,562 1,097 967.08 1,576 1,113 967.09 1,591 1,129 967.10 1,605 1,145 967.11 1,619 1,161 967.12 1,633 1,177 967.13 1,648 1,194 967.14 1,662 1,210 967.15 1,676 1,227 967.16 1,690 1,244 967.17 1,705 1,261 967.18 1,719 1,278 967.19 1,733 1,295 967.20 1,748 1,312 967.21 1,762 1,330 967.22 1,776 1,348 967.23 1,790 1,366 967.24 1,805 1,384 967.25 1,819 1,402 967.26 1,833 1,420 967.27 1,848 1,438 967.28 1,862 1,457 967.29 1,876 1,476 967.30 1,890 1,494 967.31 1,905 1,513 967.32 1,919 1,532 967.33 1,933 1,552 967.34 1,948 1,571 967.35 1,962 1,591 967.36 1,976 1,610 967.37 1,990 1,630 967.38 2,005 1,650 967.39 2,019 1,670 967.40 2,033 1,691 967.41 2,047 1,711 967.42 2,062 1,731 967.43 2,076 1,752 967.44 2,090 1,773 967.45 2,105 1,794 967.46 2,119 1,815 967.47 2,133 1,836 967.48 2,147 1,858 967.49 2,162 1,879 967.50 2,176 1,901 967.51 2,190 1,923 967.52 2,205 1,945 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.53 2,219 1,967 967.54 2,233 1,989 967.55 2,247 2,012 967.56 2,262 2,034 967.57 2,276 2,057 967.58 2,290 2,080 967.59 2,305 2,103 967.60 2,319 2,126 967.61 2,333 2,149 967.62 2,347 2,172 967.63 2,362 2,196 967.64 2,376 2,220 967.65 2,390 2,243 967.66 2,404 2,267 967.67 2,419 2,292 967.68 2,433 2,316 967.69 2,447 2,340 967.70 2,462 2,365 967.71 2,476 2,389 967.72 2,490 2,414 967.73 2,504 2,439 967.74 2,519 2,464 967.75 2,533 2,490 967.76 2,547 2,515 967.77 2,562 2,541 967.78 2,576 2,566 967.79 2,590 2,592 967.80 2,604 2,618 967.81 2,619 2,644 967.82 2,633 2,670 967.83 2,647 2,697 967.84 2,662 2,723 967.85 2,676 2,750 967.86 2,690 2,777 967.87 2,704 2,804 967.88 2,719 2,831 967.89 2,733 2,858 967.90 2,747 2,886 967.91 2,761 2,913 967.92 2,776 2,941 967.93 2,790 2,969 967.94 2,804 2,997 967.95 2,819 3,025 967.96 2,833 3,053 967.97 2,847 3,081 967.98 2,861 3,110 967.99 2,876 3,139 968.00 2,890 3,168 968.01 2,910 3,196 968.02 2,930 3,226 968.03 2,950 3,255 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 29HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 968.04 2,969 3,285 968.05 2,989 3,314 968.06 3,009 3,344 968.07 3,029 3,375 968.08 3,049 3,405 968.09 3,069 3,436 968.10 3,089 3,466 968.11 3,108 3,497 968.12 3,128 3,529 968.13 3,148 3,560 968.14 3,168 3,592 968.15 3,188 3,623 968.16 3,208 3,655 968.17 3,227 3,687 968.18 3,247 3,720 968.19 3,267 3,752 968.20 3,287 3,785 968.21 3,307 3,818 968.22 3,327 3,851 968.23 3,347 3,885 968.24 3,366 3,918 968.25 3,386 3,952 968.26 3,406 3,986 968.27 3,426 4,020 968.28 3,446 4,055 968.29 3,466 4,089 968.30 3,485 4,124 968.31 3,505 4,159 968.32 3,525 4,194 968.33 3,545 4,229 968.34 3,565 4,265 968.35 3,585 4,301 968.36 3,605 4,337 968.37 3,624 4,373 968.38 3,644 4,409 968.39 3,664 4,446 968.40 3,684 4,482 968.41 3,704 4,519 968.42 3,724 4,556 968.43 3,744 4,594 968.44 3,763 4,631 968.45 3,783 4,669 968.46 3,803 4,707 968.47 3,823 4,745 968.48 3,843 4,783 968.49 3,863 4,822 968.50 3,883 4,861 968.51 3,902 4,900 968.52 3,922 4,939 968.53 3,942 4,978 968.54 3,962 5,018 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 968.55 3,982 5,057 968.56 4,002 5,097 968.57 4,021 5,137 968.58 4,041 5,178 968.59 4,061 5,218 968.60 4,081 5,259 968.61 4,101 5,300 968.62 4,121 5,341 968.63 4,141 5,382 968.64 4,160 5,424 968.65 4,180 5,465 968.66 4,200 5,507 968.67 4,220 5,549 968.68 4,240 5,592 968.69 4,260 5,634 968.70 4,280 5,677 968.71 4,299 5,720 968.72 4,319 5,763 968.73 4,339 5,806 968.74 4,359 5,850 968.75 4,379 5,893 968.76 4,399 5,937 968.77 4,418 5,981 968.78 4,438 6,026 968.79 4,458 6,070 968.80 4,478 6,115 968.81 4,498 6,160 968.82 4,518 6,205 968.83 4,538 6,250 968.84 4,557 6,295 968.85 4,577 6,341 968.86 4,597 6,387 968.87 4,617 6,433 968.88 4,637 6,479 968.89 4,657 6,526 968.90 4,676 6,572 968.91 4,696 6,619 968.92 4,716 6,666 968.93 4,736 6,714 968.94 4,756 6,761 968.95 4,776 6,809 968.96 4,796 6,857 968.97 4,815 6,905 968.98 4,835 6,953 968.99 4,855 7,001 969.00 4,875 7,050 969.01 4,875 7,099 969.02 4,875 7,147 969.03 4,875 7,196 969.04 4,875 7,245 969.05 4,875 7,294 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 30HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.06 4,875 7,342 969.07 4,875 7,391 969.08 4,875 7,440 969.09 4,875 7,489 969.10 4,875 7,538 969.11 4,875 7,586 969.12 4,875 7,635 969.13 4,875 7,684 969.14 4,875 7,732 969.15 4,875 7,781 969.16 4,875 7,830 969.17 4,875 7,879 969.18 4,875 7,927 969.19 4,875 7,976 969.20 4,875 8,025 969.21 4,875 8,074 969.22 4,875 8,123 969.23 4,875 8,171 969.24 4,875 8,220 969.25 4,875 8,269 969.26 4,875 8,317 969.27 4,875 8,366 969.28 4,875 8,415 969.29 4,875 8,464 969.30 4,875 8,512 969.31 4,875 8,561 969.32 4,875 8,610 969.33 4,875 8,659 969.34 4,875 8,708 969.35 4,875 8,756 969.36 4,875 8,805 969.37 4,875 8,854 969.38 4,875 8,902 969.39 4,875 8,951 969.40 4,875 9,000 969.41 4,875 9,049 969.42 4,875 9,097 969.43 4,875 9,146 969.44 4,875 9,195 969.45 4,875 9,244 969.46 4,875 9,293 969.47 4,875 9,341 969.48 4,875 9,390 969.49 4,875 9,439 969.50 4,875 9,488 969.51 4,875 9,536 969.52 4,875 9,585 969.53 4,875 9,634 969.54 4,875 9,682 969.55 4,875 9,731 969.56 4,875 9,780 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.57 4,875 9,829 969.58 4,875 9,878 969.59 4,875 9,926 969.60 4,875 9,975 969.61 4,875 10,024 969.62 4,875 10,073 969.63 4,875 10,121 969.64 4,875 10,170 969.65 4,875 10,219 969.66 4,875 10,267 969.67 4,875 10,316 969.68 4,875 10,365 969.69 4,875 10,414 969.70 4,875 10,463 969.71 4,875 10,511 969.72 4,875 10,560 969.73 4,875 10,609 969.74 4,875 10,658 969.75 4,875 10,706 969.76 4,875 10,755 969.77 4,875 10,804 969.78 4,875 10,852 969.79 4,875 10,901 969.80 4,875 10,950 969.81 4,875 10,999 969.82 4,875 11,048 969.83 4,875 11,096 969.84 4,875 11,145 969.85 4,875 11,194 969.86 4,875 11,243 969.87 4,875 11,291 969.88 4,875 11,340 969.89 4,875 11,389 969.90 4,875 11,437 969.91 4,875 11,486 969.92 4,875 11,535 969.93 4,875 11,584 969.94 4,875 11,633 969.95 4,875 11,681 969.96 4,875 11,730 969.97 4,875 11,779 969.98 4,875 11,828 969.99 4,875 11,876 970.00 4,875 11,925 970.01 4,875 11,974 970.02 4,875 12,022 970.03 4,875 12,071 970.04 4,875 12,120 970.05 4,875 12,169 970.06 4,875 12,217 970.07 4,875 12,266 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 31HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.08 4,875 12,315 970.09 4,875 12,364 970.10 4,875 12,413 970.11 4,875 12,461 970.12 4,875 12,510 970.13 4,875 12,559 970.14 4,875 12,607 970.15 4,875 12,656 970.16 4,875 12,705 970.17 4,875 12,754 970.18 4,875 12,802 970.19 4,875 12,851 970.20 4,875 12,900 970.21 4,875 12,949 970.22 4,875 12,998 970.23 4,875 13,046 970.24 4,875 13,095 970.25 4,875 13,144 970.26 4,875 13,192 970.27 4,875 13,241 970.28 4,875 13,290 970.29 4,875 13,339 970.30 4,875 13,387 970.31 4,875 13,436 970.32 4,875 13,485 970.33 4,875 13,534 970.34 4,875 13,583 970.35 4,875 13,631 970.36 4,875 13,680 970.37 4,875 13,729 970.38 4,875 13,777 970.39 4,875 13,826 970.40 4,875 13,875 970.41 4,875 13,924 970.42 4,875 13,972 970.43 4,875 14,021 970.44 4,875 14,070 970.45 4,875 14,119 970.46 4,875 14,168 970.47 4,875 14,216 970.48 4,875 14,265 970.49 4,875 14,314 970.50 4,875 14,363 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 32HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: FILTRATION BASIN 3 Inflow Area = 0.298 ac, 26.86% Impervious, Inflow Depth = 1.61" for 2y 24hr AT-14 event Inflow = 0.70 cfs @ 12.18 hrs, Volume= 0.040 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach DA 2 : DA 2- TOTAL EX 2 Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 965.49' @ 24.57 hrs Surf.Area= 1,483 sf Storage= 1,738 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 964.00' 2,785 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 964.00 527 0 0 965.00 1,483 1,005 1,005 966.20 1,483 1,780 2,785 Device Routing Invert Outlet Devices #1 Primary 961.50'6.0" Round OUTLET PIPE L= 61.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 961.50' / 961.00' S= 0.0082 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 965.50'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 966.00'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 964.00'1.600 in/hr Exfiltration over Surface area above 961.50' Excluded Surface area = 0 sf #5 Device 2 961.50'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 964.00'0.600 in/hr Exfiltration into Rock over Surface area from 960.90' - 961.50' Excluded Surface area = 0 sf Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' (Free Discharge) 6=Exfiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' (Free Discharge) 1=OUTLET PIPE (Passes 0.00 cfs of 1.03 cfs potential flow) 2=RIM- Orifice/Grate ( Controls 0.00 cfs) 5=Orifice 6" draintile ( Controls 0.00 cfs) 4=Exfiltration (Passes 0.00 cfs of 0.02 cfs potential flow) 3=EOF ( Controls 0.00 cfs) 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 33HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 3P: FILTRATION BASIN 3 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=0.298 ac Peak Elev=965.49' Storage=1,738 cf 0.70 cfs 0.00 cfs 0.00 cfs 0.00 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 34HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 964.00 527 0 964.01 537 5 964.02 546 11 964.03 556 16 964.04 565 22 964.05 575 28 964.06 584 33 964.07 594 39 964.08 603 45 964.09 613 51 964.10 623 57 964.11 632 64 964.12 642 70 964.13 651 77 964.14 661 83 964.15 670 90 964.16 680 97 964.17 690 103 964.18 699 110 964.19 709 117 964.20 718 125 964.21 728 132 964.22 737 139 964.23 747 146 964.24 756 154 964.25 766 162 964.26 776 169 964.27 785 177 964.28 795 185 964.29 804 193 964.30 814 201 964.31 823 209 964.32 833 218 964.33 842 226 964.34 852 234 964.35 862 243 964.36 871 252 964.37 881 260 964.38 890 269 964.39 900 278 964.40 909 287 964.41 919 296 964.42 929 306 964.43 938 315 964.44 948 324 964.45 957 334 964.46 967 344 964.47 976 353 964.48 986 363 964.49 995 373 964.50 1,005 383 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 964.51 1,015 393 964.52 1,024 403 964.53 1,034 414 964.54 1,043 424 964.55 1,053 434 964.56 1,062 445 964.57 1,072 456 964.58 1,081 466 964.59 1,091 477 964.60 1,101 488 964.61 1,110 499 964.62 1,120 510 964.63 1,129 522 964.64 1,139 533 964.65 1,148 545 964.66 1,158 556 964.67 1,168 568 964.68 1,177 579 964.69 1,187 591 964.70 1,196 603 964.71 1,206 615 964.72 1,215 627 964.73 1,225 639 964.74 1,234 652 964.75 1,244 664 964.76 1,254 677 964.77 1,263 689 964.78 1,273 702 964.79 1,282 715 964.80 1,292 728 964.81 1,301 740 964.82 1,311 754 964.83 1,320 767 964.84 1,330 780 964.85 1,340 793 964.86 1,349 807 964.87 1,359 820 964.88 1,368 834 964.89 1,378 848 964.90 1,387 861 964.91 1,397 875 964.92 1,407 889 964.93 1,416 904 964.94 1,426 918 964.95 1,435 932 964.96 1,445 946 964.97 1,454 961 964.98 1,464 976 964.99 1,473 990 965.00 1,483 1,005 965.01 1,483 1,020 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 35HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 965.02 1,483 1,035 965.03 1,483 1,049 965.04 1,483 1,064 965.05 1,483 1,079 965.06 1,483 1,094 965.07 1,483 1,109 965.08 1,483 1,124 965.09 1,483 1,138 965.10 1,483 1,153 965.11 1,483 1,168 965.12 1,483 1,183 965.13 1,483 1,198 965.14 1,483 1,213 965.15 1,483 1,227 965.16 1,483 1,242 965.17 1,483 1,257 965.18 1,483 1,272 965.19 1,483 1,287 965.20 1,483 1,302 965.21 1,483 1,316 965.22 1,483 1,331 965.23 1,483 1,346 965.24 1,483 1,361 965.25 1,483 1,376 965.26 1,483 1,391 965.27 1,483 1,405 965.28 1,483 1,420 965.29 1,483 1,435 965.30 1,483 1,450 965.31 1,483 1,465 965.32 1,483 1,480 965.33 1,483 1,494 965.34 1,483 1,509 965.35 1,483 1,524 965.36 1,483 1,539 965.37 1,483 1,554 965.38 1,483 1,569 965.39 1,483 1,583 965.40 1,483 1,598 965.41 1,483 1,613 965.42 1,483 1,628 965.43 1,483 1,643 965.44 1,483 1,658 965.45 1,483 1,672 965.46 1,483 1,687 965.47 1,483 1,702 965.48 1,483 1,717 965.49 1,483 1,732 965.50 1,483 1,747 965.51 1,483 1,761 965.52 1,483 1,776 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 965.53 1,483 1,791 965.54 1,483 1,806 965.55 1,483 1,821 965.56 1,483 1,835 965.57 1,483 1,850 965.58 1,483 1,865 965.59 1,483 1,880 965.60 1,483 1,895 965.61 1,483 1,910 965.62 1,483 1,924 965.63 1,483 1,939 965.64 1,483 1,954 965.65 1,483 1,969 965.66 1,483 1,984 965.67 1,483 1,999 965.68 1,483 2,013 965.69 1,483 2,028 965.70 1,483 2,043 965.71 1,483 2,058 965.72 1,483 2,073 965.73 1,483 2,088 965.74 1,483 2,102 965.75 1,483 2,117 965.76 1,483 2,132 965.77 1,483 2,147 965.78 1,483 2,162 965.79 1,483 2,177 965.80 1,483 2,191 965.81 1,483 2,206 965.82 1,483 2,221 965.83 1,483 2,236 965.84 1,483 2,251 965.85 1,483 2,266 965.86 1,483 2,280 965.87 1,483 2,295 965.88 1,483 2,310 965.89 1,483 2,325 965.90 1,483 2,340 965.91 1,483 2,355 965.92 1,483 2,369 965.93 1,483 2,384 965.94 1,483 2,399 965.95 1,483 2,414 965.96 1,483 2,429 965.97 1,483 2,444 965.98 1,483 2,458 965.99 1,483 2,473 966.00 1,483 2,488 966.01 1,483 2,503 966.02 1,483 2,518 966.03 1,483 2,532 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 36HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.04 1,483 2,547 966.05 1,483 2,562 966.06 1,483 2,577 966.07 1,483 2,592 966.08 1,483 2,607 966.09 1,483 2,621 966.10 1,483 2,636 966.11 1,483 2,651 966.12 1,483 2,666 966.13 1,483 2,681 966.14 1,483 2,696 966.15 1,483 2,710 966.16 1,483 2,725 966.17 1,483 2,740 966.18 1,483 2,755 966.19 1,483 2,770 966.20 1,483 2,785 966.21 1,483 2,785 966.22 1,483 2,785 966.23 1,483 2,785 966.24 1,483 2,785 966.25 1,483 2,785 966.26 1,483 2,785 966.27 1,483 2,785 966.28 1,483 2,785 966.29 1,483 2,785 966.30 1,483 2,785 966.31 1,483 2,785 966.32 1,483 2,785 966.33 1,483 2,785 966.34 1,483 2,785 966.35 1,483 2,785 966.36 1,483 2,785 966.37 1,483 2,785 966.38 1,483 2,785 966.39 1,483 2,785 966.40 1,483 2,785 966.41 1,483 2,785 966.42 1,483 2,785 966.43 1,483 2,785 966.44 1,483 2,785 966.45 1,483 2,785 966.46 1,483 2,785 966.47 1,483 2,785 966.48 1,483 2,785 966.49 1,483 2,785 966.50 1,483 2,785 966.51 1,483 2,785 966.52 1,483 2,785 966.53 1,483 2,785 966.54 1,483 2,785 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.55 1,483 2,785 966.56 1,483 2,785 966.57 1,483 2,785 966.58 1,483 2,785 966.59 1,483 2,785 966.60 1,483 2,785 966.61 1,483 2,785 966.62 1,483 2,785 966.63 1,483 2,785 966.64 1,483 2,785 966.65 1,483 2,785 966.66 1,483 2,785 966.67 1,483 2,785 966.68 1,483 2,785 966.69 1,483 2,785 966.70 1,483 2,785 966.71 1,483 2,785 966.72 1,483 2,785 966.73 1,483 2,785 966.74 1,483 2,785 966.75 1,483 2,785 966.76 1,483 2,785 966.77 1,483 2,785 966.78 1,483 2,785 966.79 1,483 2,785 966.80 1,483 2,785 966.81 1,483 2,785 966.82 1,483 2,785 966.83 1,483 2,785 966.84 1,483 2,785 966.85 1,483 2,785 966.86 1,483 2,785 966.87 1,483 2,785 966.88 1,483 2,785 966.89 1,483 2,785 966.90 1,483 2,785 966.91 1,483 2,785 966.92 1,483 2,785 966.93 1,483 2,785 966.94 1,483 2,785 966.95 1,483 2,785 966.96 1,483 2,785 966.97 1,483 2,785 966.98 1,483 2,785 966.99 1,483 2,785 967.00 1,483 2,785 967.01 1,483 2,785 967.02 1,483 2,785 967.03 1,483 2,785 967.04 1,483 2,785 967.05 1,483 2,785 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 37HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.06 1,483 2,785 967.07 1,483 2,785 967.08 1,483 2,785 967.09 1,483 2,785 967.10 1,483 2,785 967.11 1,483 2,785 967.12 1,483 2,785 967.13 1,483 2,785 967.14 1,483 2,785 967.15 1,483 2,785 967.16 1,483 2,785 967.17 1,483 2,785 967.18 1,483 2,785 967.19 1,483 2,785 967.20 1,483 2,785 967.21 1,483 2,785 967.22 1,483 2,785 967.23 1,483 2,785 967.24 1,483 2,785 967.25 1,483 2,785 967.26 1,483 2,785 967.27 1,483 2,785 967.28 1,483 2,785 967.29 1,483 2,785 967.30 1,483 2,785 967.31 1,483 2,785 967.32 1,483 2,785 967.33 1,483 2,785 967.34 1,483 2,785 967.35 1,483 2,785 967.36 1,483 2,785 967.37 1,483 2,785 967.38 1,483 2,785 967.39 1,483 2,785 967.40 1,483 2,785 967.41 1,483 2,785 967.42 1,483 2,785 967.43 1,483 2,785 967.44 1,483 2,785 967.45 1,483 2,785 967.46 1,483 2,785 967.47 1,483 2,785 967.48 1,483 2,785 967.49 1,483 2,785 967.50 1,483 2,785 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 38HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4P: WETLAND A [44] Hint: Outlet device #2 is below defined storage Inflow Area = 3.209 ac, 14.54% Impervious, Inflow Depth = 1.26" for 2y 24hr AT-14 event Inflow = 5.07 cfs @ 12.18 hrs, Volume= 0.338 af Outflow = 1.31 cfs @ 12.52 hrs, Volume= 0.338 af, Atten= 74%, Lag= 20.4 min Primary = 1.31 cfs @ 12.52 hrs, Volume= 0.338 af Routed to Reach DA 1 : DRAINAGE AREA 1- TOTAL TO WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 970.07' @ 12.52 hrs Surf.Area= 12,541 sf Storage= 5,333 cf Plug-Flow detention time= 131.7 min calculated for 0.338 af (100% of inflow) Center-of-Mass det. time= 131.7 min ( 968.1 - 836.4 ) Volume Invert Avail.Storage Storage Description #1 969.62' 19,559 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 969.62 11,466 0 0 970.00 12,137 4,485 4,485 971.00 18,012 15,075 19,559 Device Routing Invert Outlet Devices #1 Primary 965.00'6.0" Round OUTLET PIPE- Culvert L= 29.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 965.00' / 963.50' S= 0.0517 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 0.20 sf #2 Device 1 969.60'24.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 970.25'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=1.31 cfs @ 12.52 hrs HW=970.07' (Free Discharge) 1=OUTLET PIPE- Culvert (Passes 1.31 cfs of 1.83 cfs potential flow) 2=Orifice/Grate (Orifice Controls 1.31 cfs @ 2.33 fps) 3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 39HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 4P: WETLAND A Inflow Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Inflow Area=3.209 ac Peak Elev=970.07' Storage=5,333 cf 5.07 cfs 1.31 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 40HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: WETLAND A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.62 11,466 0 969.63 11,484 115 969.64 11,501 230 969.65 11,519 345 969.66 11,537 460 969.67 11,554 576 969.68 11,572 691 969.69 11,590 807 969.70 11,607 923 969.71 11,625 1,039 969.72 11,643 1,155 969.73 11,660 1,272 969.74 11,678 1,389 969.75 11,696 1,506 969.76 11,713 1,623 969.77 11,731 1,740 969.78 11,749 1,857 969.79 11,766 1,975 969.80 11,784 2,092 969.81 11,802 2,210 969.82 11,819 2,329 969.83 11,837 2,447 969.84 11,854 2,565 969.85 11,872 2,684 969.86 11,890 2,803 969.87 11,907 2,922 969.88 11,925 3,041 969.89 11,943 3,160 969.90 11,960 3,280 969.91 11,978 3,399 969.92 11,996 3,519 969.93 12,013 3,639 969.94 12,031 3,760 969.95 12,049 3,880 969.96 12,066 4,001 969.97 12,084 4,121 969.98 12,102 4,242 969.99 12,119 4,363 970.00 12,137 4,485 970.01 12,196 4,606 970.02 12,254 4,728 970.03 12,313 4,851 970.04 12,372 4,975 970.05 12,431 5,099 970.06 12,490 5,223 970.07 12,548 5,349 970.08 12,607 5,474 970.09 12,666 5,601 970.10 12,725 5,728 970.11 12,783 5,855 970.12 12,842 5,983 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.13 12,901 6,112 970.14 12,959 6,241 970.15 13,018 6,371 970.16 13,077 6,502 970.17 13,136 6,633 970.18 13,194 6,764 970.19 13,253 6,897 970.20 13,312 7,029 970.21 13,371 7,163 970.22 13,430 7,297 970.23 13,488 7,431 970.24 13,547 7,567 970.25 13,606 7,702 970.26 13,664 7,839 970.27 13,723 7,976 970.28 13,782 8,113 970.29 13,841 8,251 970.30 13,899 8,390 970.31 13,958 8,529 970.32 14,017 8,669 970.33 14,076 8,810 970.34 14,135 8,951 970.35 14,193 9,092 970.36 14,252 9,235 970.37 14,311 9,377 970.38 14,369 9,521 970.39 14,428 9,665 970.40 14,487 9,809 970.41 14,546 9,955 970.42 14,604 10,100 970.43 14,663 10,247 970.44 14,722 10,394 970.45 14,781 10,541 970.46 14,840 10,689 970.47 14,898 10,838 970.48 14,957 10,987 970.49 15,016 11,137 970.50 15,075 11,287 970.51 15,133 11,438 970.52 15,192 11,590 970.53 15,251 11,742 970.54 15,309 11,895 970.55 15,368 12,049 970.56 15,427 12,202 970.57 15,486 12,357 970.58 15,545 12,512 970.59 15,603 12,668 970.60 15,662 12,824 970.61 15,721 12,981 970.62 15,780 13,139 970.63 15,838 13,297 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 2y 24hr AT-14 Rainfall=2.94"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 41HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: WETLAND A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.64 15,897 13,455 970.65 15,956 13,615 970.66 16,014 13,775 970.67 16,073 13,935 970.68 16,132 14,096 970.69 16,191 14,258 970.70 16,250 14,420 970.71 16,308 14,583 970.72 16,367 14,746 970.73 16,426 14,910 970.74 16,485 15,075 970.75 16,543 15,240 970.76 16,602 15,405 970.77 16,661 15,572 970.78 16,719 15,739 970.79 16,778 15,906 970.80 16,837 16,074 970.81 16,896 16,243 970.82 16,955 16,412 970.83 17,013 16,582 970.84 17,072 16,752 970.85 17,131 16,923 970.86 17,190 17,095 970.87 17,248 17,267 970.88 17,307 17,440 970.89 17,366 17,613 970.90 17,424 17,787 970.91 17,483 17,962 970.92 17,542 18,137 970.93 17,601 18,313 970.94 17,660 18,489 970.95 17,718 18,666 970.96 17,777 18,843 970.97 17,836 19,021 970.98 17,895 19,200 970.99 17,953 19,379 971.00 18,012 19,559 971.01 18,012 19,559 971.02 18,012 19,559 971.03 18,012 19,559 971.04 18,012 19,559 971.05 18,012 19,559 971.06 18,012 19,559 971.07 18,012 19,559 971.08 18,012 19,559 971.09 18,012 19,559 971.10 18,012 19,559 971.11 18,012 19,559 971.12 18,012 19,559 971.13 18,012 19,559 971.14 18,012 19,559 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 971.15 18,012 19,559 971.16 18,012 19,559 971.17 18,012 19,559 971.18 18,012 19,559 971.19 18,012 19,559 971.20 18,012 19,559 971.21 18,012 19,559 971.22 18,012 19,559 971.23 18,012 19,559 971.24 18,012 19,559 971.25 18,012 19,559 971.26 18,012 19,559 971.27 18,012 19,559 971.28 18,012 19,559 971.29 18,012 19,559 971.30 18,012 19,559 971.31 18,012 19,559 971.32 18,012 19,559 971.33 18,012 19,559 971.34 18,012 19,559 971.35 18,012 19,559 971.36 18,012 19,559 971.37 18,012 19,559 971.38 18,012 19,559 971.39 18,012 19,559 971.40 18,012 19,559 971.41 18,012 19,559 971.42 18,012 19,559 971.43 18,012 19,559 971.44 18,012 19,559 971.45 18,012 19,559 971.46 18,012 19,559 971.47 18,012 19,559 971.48 18,012 19,559 971.49 18,012 19,559 971.50 18,012 19,559 971.51 18,012 19,559 971.52 18,012 19,559 971.53 18,012 19,559 971.54 18,012 19,559 971.55 18,012 19,559 971.56 18,012 19,559 971.57 18,012 19,559 971.58 18,012 19,559 971.59 18,012 19,559 971.60 18,012 19,559 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 42HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=74,865 sf 8.12% Impervious Runoff Depth=2.40"Subcatchment OFFSITE B: OFFSITE B - Tc=10.0 min CN=WQ Runoff=6.30 cfs 0.344 af Runoff Area=49,573 sf 17.90% Impervious Runoff Depth=2.57"Subcatchment OUTSITE A: OFFSITE A - Tc=10.0 min CN=WQ Runoff=4.39 cfs 0.244 af Runoff Area=3,248 sf 100.00% Impervious Runoff Depth=4.02"Subcatchment PR1A: PR1A - DRAINS Tc=10.0 min CN=WQ Runoff=0.40 cfs 0.025 af Runoff Area=30,432 sf 23.96% Impervious Runoff Depth=2.68"Subcatchment PR1B: PR1B - DRAINS Tc=10.0 min CN=WQ Runoff=2.77 cfs 0.156 af Runoff Area=34,488 sf 20.19% Impervious Runoff Depth=2.61"Subcatchment PR1C: PR1C - DRAINS Tc=10.0 min CN=WQ Runoff=3.09 cfs 0.173 af Runoff Area=6,877 sf 0.00% Impervious Runoff Depth=2.26"Subcatchment PR2A: PR2C - DRAINS Tc=10.0 min CN=WQ Runoff=0.56 cfs 0.030 af Runoff Area=9,970 sf 30.15% Impervious Runoff Depth=2.79"Subcatchment PR2B: PR2B - DRAINS Tc=10.0 min CN=WQ Runoff=0.94 cfs 0.053 af Runoff Area=12,962 sf 26.86% Impervious Runoff Depth=2.73"Subcatchment PR2C: PR2C - DRAINS Tc=10.0 min CN=WQ Runoff=1.20 cfs 0.068 af Inflow=3.22 cfs 0.630 afReach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A Outflow=3.22 cfs 0.630 af Inflow=0.05 cfs 0.028 afReach DA 2: DA 2- TOTAL EX 2 Outflow=0.05 cfs 0.028 af Inflow=6.72 cfs 0.931 afReach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Outflow=6.72 cfs 0.931 af Peak Elev=977.22' Storage=3,789 cf Inflow=3.09 cfs 0.173 afPond 1P: FILTRATION BASIN 1 Discarded=0.00 cfs 0.000 af Primary=1.17 cfs 0.130 af Outflow=1.17 cfs 0.130 af Peak Elev=967.68' Storage=2,318 cf Inflow=0.94 cfs 0.053 afPond 2P: FILTRATION BASIN 2 Discarded=0.00 cfs 0.000 af Primary=0.00 cfs 0.000 af Outflow=0.00 cfs 0.000 af Peak Elev=965.74' Storage=2,098 cf Inflow=1.20 cfs 0.068 afPond 3P: FILTRATION BASIN 3 Discarded=0.00 cfs 0.000 af Primary=0.05 cfs 0.028 af Outflow=0.05 cfs 0.028 af Peak Elev=970.39' Storage=9,693 cf Inflow=9.18 cfs 0.630 afPond 4P: WETLAND A Outflow=3.22 cfs 0.630 af Total Runoff Area = 5.106 ac Runoff Volume = 1.093 af Average Runoff Depth = 2.57" 82.49% Pervious = 4.212 ac 17.51% Impervious = 0.894 ac 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 43HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND Runoff = 6.30 cfs @ 12.18 hrs, Volume= 0.344 af, Depth= 2.40" Routed to Pond 4P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 6,076 98 Paved parking, HSG C 68,789 80 Pasture/grassland/range, Good, HSG D 74,865 Weighted Average 68,789 91.88% Pervious Area 6,076 8.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=74,865 sf Runoff Volume=0.344 af Runoff Depth=2.40" Tc=10.0 min CN=WQ 6.30 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 44HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B Runoff = 4.39 cfs @ 12.18 hrs, Volume= 0.244 af, Depth= 2.57" Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 8,875 98 Paved parking, HSG C 40,698 80 Pasture/grassland/range, Good, HSG D 49,573 Weighted Average 40,698 82.10% Pervious Area 8,875 17.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=49,573 sf Runoff Volume=0.244 af Runoff Depth=2.57" Tc=10.0 min CN=WQ 4.39 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 45HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1A: PR1A - DRAINS EAST ALONG STREET Runoff = 0.40 cfs @ 12.17 hrs, Volume= 0.025 af, Depth= 4.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 3,248 98 Paved parking, HSG C 0 80 Pasture/grassland/range, Good, HSG D 3,248 Weighted Average 3,248 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1A: PR1A - DRAINS EAST ALONG STREET Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=3,248 sf Runoff Volume=0.025 af Runoff Depth=4.02" Tc=10.0 min CN=WQ 0.40 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 46HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1B: PR1B - DRAINS SOUTH TO WETLAND A Runoff = 2.77 cfs @ 12.17 hrs, Volume= 0.156 af, Depth= 2.68" Routed to Pond 4P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 7,290 98 Paved parking, HSG C 23,142 80 Pasture/grassland/range, Good, HSG D 30,432 Weighted Average 23,142 76.04% Pervious Area 7,290 23.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1B: PR1B - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=30,432 sf Runoff Volume=0.156 af Runoff Depth=2.68" Tc=10.0 min CN=WQ 2.77 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 47HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN Runoff = 3.09 cfs @ 12.18 hrs, Volume= 0.173 af, Depth= 2.61" Routed to Pond 1P : FILTRATION BASIN 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 6,962 98 Paved parking, HSG C 27,526 80 Pasture/grassland/range, Good, HSG D 34,488 Weighted Average 27,526 79.81% Pervious Area 6,962 20.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=34,488 sf Runoff Volume=0.173 af Runoff Depth=2.61" Tc=10.0 min CN=WQ 3.09 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 48HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2A: PR2C - DRAINS SOUTH TO WETLAND B Runoff = 0.56 cfs @ 12.18 hrs, Volume= 0.030 af, Depth= 2.26" Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 0 98 Paved parking, HSG C 6,877 80 Pasture/grassland/range, Good, HSG D 6,877 Weighted Average 6,877 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2A: PR2C - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=6,877 sf Runoff Volume=0.030 af Runoff Depth=2.26" Tc=10.0 min CN=WQ 0.56 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 49HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN Runoff = 0.94 cfs @ 12.17 hrs, Volume= 0.053 af, Depth= 2.79" Routed to Pond 2P : FILTRATION BASIN 2 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 3,006 98 Paved parking, HSG C 6,964 80 Pasture/grassland/range, Good, HSG D 9,970 Weighted Average 6,964 69.85% Pervious Area 3,006 30.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=9,970 sf Runoff Volume=0.053 af Runoff Depth=2.79" Tc=10.0 min CN=WQ 0.94 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 50HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN Runoff = 1.20 cfs @ 12.17 hrs, Volume= 0.068 af, Depth= 2.73" Routed to Pond 3P : FILTRATION BASIN 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Area (sf) CN Description 3,481 98 Paved parking, HSG C 9,481 80 Pasture/grassland/range, Good, HSG D 12,962 Weighted Average 9,481 73.14% Pervious Area 3,481 26.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26" Runoff Area=12,962 sf Runoff Volume=0.068 af Runoff Depth=2.73" Tc=10.0 min CN=WQ 1.20 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 51HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 3.209 ac, 14.54% Impervious, Inflow Depth = 2.36" for 10y 24hr AT-14 event Inflow = 3.22 cfs @ 12.49 hrs, Volume= 0.630 af Outflow = 3.22 cfs @ 12.49 hrs, Volume= 0.630 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=3.209 ac 3.22 cfs 3.22 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 52HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 2: DA 2- TOTAL EX 2 [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.526 ac, 28.29% Impervious, Inflow Depth = 0.63" for 10y 24hr AT-14 event Inflow = 0.05 cfs @ 12.61 hrs, Volume= 0.028 af Outflow = 0.05 cfs @ 12.61 hrs, Volume= 0.028 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 2: DA 2- TOTAL EX 2 Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=0.526 ac 0.05 cfs 0.05 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 53HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.031 ac, 16.28% Impervious, Inflow Depth = 2.22" for 10y 24hr AT-14 event Inflow = 6.72 cfs @ 12.19 hrs, Volume= 0.931 af Outflow = 6.72 cfs @ 12.19 hrs, Volume= 0.931 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=5.031 ac 6.72 cfs 6.72 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 54HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: FILTRATION BASIN 1 Inflow Area = 0.792 ac, 20.19% Impervious, Inflow Depth = 2.61" for 10y 24hr AT-14 event Inflow = 3.09 cfs @ 12.18 hrs, Volume= 0.173 af Outflow = 1.17 cfs @ 12.37 hrs, Volume= 0.130 af, Atten= 62%, Lag= 12.0 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 1.17 cfs @ 12.37 hrs, Volume= 0.130 af Routed to Pond 4P : WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 977.22' @ 12.37 hrs Surf.Area= 2,793 sf Storage= 3,789 cf Plug-Flow detention time= 233.4 min calculated for 0.130 af (75% of inflow) Center-of-Mass det. time= 163.8 min ( 954.3 - 790.5 ) Volume Invert Avail.Storage Storage Description #1 975.60' 4,563 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 975.60 1,701 0 0 976.00 2,043 749 749 977.00 2,793 2,418 3,167 977.50 2,793 1,397 4,563 Device Routing Invert Outlet Devices #1 Primary 973.10'6.0" Round OUTLET PIPE L= 23.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 973.10' / 971.50' S= 0.0696 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 976.50'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 977.10'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 975.60'1.600 in/hr Exfiltration over Surface area above 973.10' Excluded Surface area = 0 sf #5 Device 2 973.10'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 975.60'0.600 in/hr Exfiltration-Infiltration into Rock over Surface area from 972.50' - 973.10' Excluded Surface area = 0 sf 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 55HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.60' (Free Discharge) 6=Exfiltration-Infiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=1.17 cfs @ 12.37 hrs HW=977.22' (Free Discharge) 1=OUTLET PIPE (Passes 0.10 cfs of 1.64 cfs potential flow) 2=RIM- Orifice/Grate (Passes 0.10 cfs of 2.96 cfs potential flow) 5=Orifice 6" draintile (Passes 0.10 cfs of 0.80 cfs potential flow) 4=Exfiltration (Exfiltration Controls 0.10 cfs) 3=EOF (Weir Controls 1.07 cfs @ 0.87 fps) Pond 1P: FILTRATION BASIN 1 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)3 2 1 0 Inflow Area=0.792 ac Peak Elev=977.22' Storage=3,789 cf 3.09 cfs 1.17 cfs 0.00 cfs 1.17 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 56HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 975.60 1,701 0 975.61 1,710 17 975.62 1,718 34 975.63 1,727 51 975.64 1,735 69 975.65 1,744 86 975.66 1,752 104 975.67 1,761 121 975.68 1,769 139 975.69 1,778 157 975.70 1,787 174 975.71 1,795 192 975.72 1,804 210 975.73 1,812 228 975.74 1,821 247 975.75 1,829 265 975.76 1,838 283 975.77 1,846 302 975.78 1,855 320 975.79 1,863 339 975.80 1,872 357 975.81 1,881 376 975.82 1,889 395 975.83 1,898 414 975.84 1,906 433 975.85 1,915 452 975.86 1,923 471 975.87 1,932 490 975.88 1,940 510 975.89 1,949 529 975.90 1,957 549 975.91 1,966 568 975.92 1,975 588 975.93 1,983 608 975.94 1,992 628 975.95 2,000 648 975.96 2,009 668 975.97 2,017 688 975.98 2,026 708 975.99 2,034 728 976.00 2,043 749 976.01 2,050 769 976.02 2,058 790 976.03 2,065 810 976.04 2,073 831 976.05 2,081 852 976.06 2,088 873 976.07 2,096 894 976.08 2,103 915 976.09 2,111 936 976.10 2,118 957 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 976.11 2,126 978 976.12 2,133 999 976.13 2,140 1,021 976.14 2,148 1,042 976.15 2,155 1,064 976.16 2,163 1,085 976.17 2,171 1,107 976.18 2,178 1,129 976.19 2,186 1,151 976.20 2,193 1,172 976.21 2,201 1,194 976.22 2,208 1,216 976.23 2,216 1,239 976.24 2,223 1,261 976.25 2,231 1,283 976.26 2,238 1,305 976.27 2,245 1,328 976.28 2,253 1,350 976.29 2,261 1,373 976.30 2,268 1,395 976.31 2,276 1,418 976.32 2,283 1,441 976.33 2,291 1,464 976.34 2,298 1,487 976.35 2,306 1,510 976.36 2,313 1,533 976.37 2,321 1,556 976.38 2,328 1,579 976.39 2,335 1,603 976.40 2,343 1,626 976.41 2,350 1,649 976.42 2,358 1,673 976.43 2,366 1,697 976.44 2,373 1,720 976.45 2,381 1,744 976.46 2,388 1,768 976.47 2,396 1,792 976.48 2,403 1,816 976.49 2,411 1,840 976.50 2,418 1,864 976.51 2,425 1,888 976.52 2,433 1,913 976.53 2,440 1,937 976.54 2,448 1,961 976.55 2,456 1,986 976.56 2,463 2,010 976.57 2,471 2,035 976.58 2,478 2,060 976.59 2,486 2,085 976.60 2,493 2,110 976.61 2,501 2,135 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 57HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 976.62 2,508 2,160 976.63 2,515 2,185 976.64 2,523 2,210 976.65 2,530 2,235 976.66 2,538 2,261 976.67 2,546 2,286 976.68 2,553 2,311 976.69 2,561 2,337 976.70 2,568 2,363 976.71 2,576 2,388 976.72 2,583 2,414 976.73 2,591 2,440 976.74 2,598 2,466 976.75 2,606 2,492 976.76 2,613 2,518 976.77 2,620 2,544 976.78 2,628 2,570 976.79 2,636 2,597 976.80 2,643 2,623 976.81 2,651 2,650 976.82 2,658 2,676 976.83 2,666 2,703 976.84 2,673 2,730 976.85 2,681 2,756 976.86 2,688 2,783 976.87 2,696 2,810 976.88 2,703 2,837 976.89 2,710 2,864 976.90 2,718 2,891 976.91 2,725 2,918 976.92 2,733 2,946 976.93 2,741 2,973 976.94 2,748 3,001 976.95 2,756 3,028 976.96 2,763 3,056 976.97 2,771 3,083 976.98 2,778 3,111 976.99 2,786 3,139 977.00 2,793 3,167 977.01 2,793 3,195 977.02 2,793 3,223 977.03 2,793 3,251 977.04 2,793 3,279 977.05 2,793 3,306 977.06 2,793 3,334 977.07 2,793 3,362 977.08 2,793 3,390 977.09 2,793 3,418 977.10 2,793 3,446 977.11 2,793 3,474 977.12 2,793 3,502 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 977.13 2,793 3,530 977.14 2,793 3,558 977.15 2,793 3,586 977.16 2,793 3,614 977.17 2,793 3,642 977.18 2,793 3,670 977.19 2,793 3,697 977.20 2,793 3,725 977.21 2,793 3,753 977.22 2,793 3,781 977.23 2,793 3,809 977.24 2,793 3,837 977.25 2,793 3,865 977.26 2,793 3,893 977.27 2,793 3,921 977.28 2,793 3,949 977.29 2,793 3,977 977.30 2,793 4,005 977.31 2,793 4,033 977.32 2,793 4,061 977.33 2,793 4,088 977.34 2,793 4,116 977.35 2,793 4,144 977.36 2,793 4,172 977.37 2,793 4,200 977.38 2,793 4,228 977.39 2,793 4,256 977.40 2,793 4,284 977.41 2,793 4,312 977.42 2,793 4,340 977.43 2,793 4,368 977.44 2,793 4,396 977.45 2,793 4,424 977.46 2,793 4,452 977.47 2,793 4,480 977.48 2,793 4,507 977.49 2,793 4,535 977.50 2,793 4,563 977.51 2,793 4,563 977.52 2,793 4,563 977.53 2,793 4,563 977.54 2,793 4,563 977.55 2,793 4,563 977.56 2,793 4,563 977.57 2,793 4,563 977.58 2,793 4,563 977.59 2,793 4,563 977.60 2,793 4,563 977.61 2,793 4,563 977.62 2,793 4,563 977.63 2,793 4,563 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 58HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 977.64 2,793 4,563 977.65 2,793 4,563 977.66 2,793 4,563 977.67 2,793 4,563 977.68 2,793 4,563 977.69 2,793 4,563 977.70 2,793 4,563 977.71 2,793 4,563 977.72 2,793 4,563 977.73 2,793 4,563 977.74 2,793 4,563 977.75 2,793 4,563 977.76 2,793 4,563 977.77 2,793 4,563 977.78 2,793 4,563 977.79 2,793 4,563 977.80 2,793 4,563 977.81 2,793 4,563 977.82 2,793 4,563 977.83 2,793 4,563 977.84 2,793 4,563 977.85 2,793 4,563 977.86 2,793 4,563 977.87 2,793 4,563 977.88 2,793 4,563 977.89 2,793 4,563 977.90 2,793 4,563 977.91 2,793 4,563 977.92 2,793 4,563 977.93 2,793 4,563 977.94 2,793 4,563 977.95 2,793 4,563 977.96 2,793 4,563 977.97 2,793 4,563 977.98 2,793 4,563 977.99 2,793 4,563 978.00 2,793 4,563 978.01 2,793 4,563 978.02 2,793 4,563 978.03 2,793 4,563 978.04 2,793 4,563 978.05 2,793 4,563 978.06 2,793 4,563 978.07 2,793 4,563 978.08 2,793 4,563 978.09 2,793 4,563 978.10 2,793 4,563 978.11 2,793 4,563 978.12 2,793 4,563 978.13 2,793 4,563 978.14 2,793 4,563 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 978.15 2,793 4,563 978.16 2,793 4,563 978.17 2,793 4,563 978.18 2,793 4,563 978.19 2,793 4,563 978.20 2,793 4,563 978.21 2,793 4,563 978.22 2,793 4,563 978.23 2,793 4,563 978.24 2,793 4,563 978.25 2,793 4,563 978.26 2,793 4,563 978.27 2,793 4,563 978.28 2,793 4,563 978.29 2,793 4,563 978.30 2,793 4,563 978.31 2,793 4,563 978.32 2,793 4,563 978.33 2,793 4,563 978.34 2,793 4,563 978.35 2,793 4,563 978.36 2,793 4,563 978.37 2,793 4,563 978.38 2,793 4,563 978.39 2,793 4,563 978.40 2,793 4,563 978.41 2,793 4,563 978.42 2,793 4,563 978.43 2,793 4,563 978.44 2,793 4,563 978.45 2,793 4,563 978.46 2,793 4,563 978.47 2,793 4,563 978.48 2,793 4,563 978.49 2,793 4,563 978.50 2,793 4,563 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 59HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: FILTRATION BASIN 2 Inflow Area = 0.229 ac, 30.15% Impervious, Inflow Depth = 2.79" for 10y 24hr AT-14 event Inflow = 0.94 cfs @ 12.17 hrs, Volume= 0.053 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach DA 2 : DA 2- TOTAL EX 2 Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 967.68' @ 24.57 hrs Surf.Area= 2,435 sf Storage= 2,318 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 966.00' 14,363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 966.00 521 0 0 967.00 1,462 992 992 968.00 2,890 2,176 3,168 969.00 4,875 3,883 7,050 970.50 4,875 7,313 14,363 Device Routing Invert Outlet Devices #1 Primary 963.50'6.0" Round OUTLET PIPE L= 70.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 963.50' / 963.00' S= 0.0071 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 968.00'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 970.25'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 966.00'1.600 in/hr Exfiltration over Surface area above 963.50' Excluded Surface area = 0 sf #5 Device 2 963.50'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 966.00'0.600 in/hr Exfiltration into Rock over Surface area from 962.90' - 963.50' Excluded Surface area = 0 sf 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 60HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=966.00' (Free Discharge) 6=Exfiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=966.00' (Free Discharge) 1=OUTLET PIPE (Passes 0.00 cfs of 0.98 cfs potential flow) 2=RIM- Orifice/Grate ( Controls 0.00 cfs) 5=Orifice 6" draintile ( Controls 0.00 cfs) 4=Exfiltration (Passes 0.00 cfs of 0.02 cfs potential flow) 3=EOF ( Controls 0.00 cfs) Pond 2P: FILTRATION BASIN 2 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.229 ac Peak Elev=967.68' Storage=2,318 cf 0.94 cfs 0.00 cfs 0.00 cfs 0.00 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 61HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.00 521 0 966.01 530 5 966.02 540 11 966.03 549 16 966.04 559 22 966.05 568 27 966.06 577 33 966.07 587 39 966.08 596 45 966.09 606 51 966.10 615 57 966.11 625 63 966.12 634 69 966.13 643 76 966.14 653 82 966.15 662 89 966.16 672 95 966.17 681 102 966.18 690 109 966.19 700 116 966.20 709 123 966.21 719 130 966.22 728 137 966.23 737 145 966.24 747 152 966.25 756 160 966.26 766 167 966.27 775 175 966.28 784 183 966.29 794 191 966.30 803 199 966.31 813 207 966.32 822 215 966.33 832 223 966.34 841 232 966.35 850 240 966.36 860 249 966.37 869 257 966.38 879 266 966.39 888 275 966.40 897 284 966.41 907 293 966.42 916 302 966.43 926 311 966.44 935 320 966.45 944 330 966.46 954 339 966.47 963 349 966.48 973 358 966.49 982 368 966.50 992 378 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.51 1,001 388 966.52 1,010 398 966.53 1,020 408 966.54 1,029 419 966.55 1,039 429 966.56 1,048 439 966.57 1,057 450 966.58 1,067 460 966.59 1,076 471 966.60 1,086 482 966.61 1,095 493 966.62 1,104 504 966.63 1,114 515 966.64 1,123 526 966.65 1,133 537 966.66 1,142 549 966.67 1,151 560 966.68 1,161 572 966.69 1,170 583 966.70 1,180 595 966.71 1,189 607 966.72 1,199 619 966.73 1,208 631 966.74 1,217 643 966.75 1,227 655 966.76 1,236 668 966.77 1,246 680 966.78 1,255 693 966.79 1,264 705 966.80 1,274 718 966.81 1,283 731 966.82 1,293 744 966.83 1,302 757 966.84 1,311 770 966.85 1,321 783 966.86 1,330 796 966.87 1,340 809 966.88 1,349 823 966.89 1,358 836 966.90 1,368 850 966.91 1,377 864 966.92 1,387 878 966.93 1,396 891 966.94 1,406 905 966.95 1,415 920 966.96 1,424 934 966.97 1,434 948 966.98 1,443 962 966.99 1,453 977 967.00 1,462 992 967.01 1,476 1,006 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 62HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.02 1,491 1,021 967.03 1,505 1,036 967.04 1,519 1,051 967.05 1,533 1,066 967.06 1,548 1,082 967.07 1,562 1,097 967.08 1,576 1,113 967.09 1,591 1,129 967.10 1,605 1,145 967.11 1,619 1,161 967.12 1,633 1,177 967.13 1,648 1,194 967.14 1,662 1,210 967.15 1,676 1,227 967.16 1,690 1,244 967.17 1,705 1,261 967.18 1,719 1,278 967.19 1,733 1,295 967.20 1,748 1,312 967.21 1,762 1,330 967.22 1,776 1,348 967.23 1,790 1,366 967.24 1,805 1,384 967.25 1,819 1,402 967.26 1,833 1,420 967.27 1,848 1,438 967.28 1,862 1,457 967.29 1,876 1,476 967.30 1,890 1,494 967.31 1,905 1,513 967.32 1,919 1,532 967.33 1,933 1,552 967.34 1,948 1,571 967.35 1,962 1,591 967.36 1,976 1,610 967.37 1,990 1,630 967.38 2,005 1,650 967.39 2,019 1,670 967.40 2,033 1,691 967.41 2,047 1,711 967.42 2,062 1,731 967.43 2,076 1,752 967.44 2,090 1,773 967.45 2,105 1,794 967.46 2,119 1,815 967.47 2,133 1,836 967.48 2,147 1,858 967.49 2,162 1,879 967.50 2,176 1,901 967.51 2,190 1,923 967.52 2,205 1,945 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.53 2,219 1,967 967.54 2,233 1,989 967.55 2,247 2,012 967.56 2,262 2,034 967.57 2,276 2,057 967.58 2,290 2,080 967.59 2,305 2,103 967.60 2,319 2,126 967.61 2,333 2,149 967.62 2,347 2,172 967.63 2,362 2,196 967.64 2,376 2,220 967.65 2,390 2,243 967.66 2,404 2,267 967.67 2,419 2,292 967.68 2,433 2,316 967.69 2,447 2,340 967.70 2,462 2,365 967.71 2,476 2,389 967.72 2,490 2,414 967.73 2,504 2,439 967.74 2,519 2,464 967.75 2,533 2,490 967.76 2,547 2,515 967.77 2,562 2,541 967.78 2,576 2,566 967.79 2,590 2,592 967.80 2,604 2,618 967.81 2,619 2,644 967.82 2,633 2,670 967.83 2,647 2,697 967.84 2,662 2,723 967.85 2,676 2,750 967.86 2,690 2,777 967.87 2,704 2,804 967.88 2,719 2,831 967.89 2,733 2,858 967.90 2,747 2,886 967.91 2,761 2,913 967.92 2,776 2,941 967.93 2,790 2,969 967.94 2,804 2,997 967.95 2,819 3,025 967.96 2,833 3,053 967.97 2,847 3,081 967.98 2,861 3,110 967.99 2,876 3,139 968.00 2,890 3,168 968.01 2,910 3,196 968.02 2,930 3,226 968.03 2,950 3,255 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 63HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 968.04 2,969 3,285 968.05 2,989 3,314 968.06 3,009 3,344 968.07 3,029 3,375 968.08 3,049 3,405 968.09 3,069 3,436 968.10 3,089 3,466 968.11 3,108 3,497 968.12 3,128 3,529 968.13 3,148 3,560 968.14 3,168 3,592 968.15 3,188 3,623 968.16 3,208 3,655 968.17 3,227 3,687 968.18 3,247 3,720 968.19 3,267 3,752 968.20 3,287 3,785 968.21 3,307 3,818 968.22 3,327 3,851 968.23 3,347 3,885 968.24 3,366 3,918 968.25 3,386 3,952 968.26 3,406 3,986 968.27 3,426 4,020 968.28 3,446 4,055 968.29 3,466 4,089 968.30 3,485 4,124 968.31 3,505 4,159 968.32 3,525 4,194 968.33 3,545 4,229 968.34 3,565 4,265 968.35 3,585 4,301 968.36 3,605 4,337 968.37 3,624 4,373 968.38 3,644 4,409 968.39 3,664 4,446 968.40 3,684 4,482 968.41 3,704 4,519 968.42 3,724 4,556 968.43 3,744 4,594 968.44 3,763 4,631 968.45 3,783 4,669 968.46 3,803 4,707 968.47 3,823 4,745 968.48 3,843 4,783 968.49 3,863 4,822 968.50 3,883 4,861 968.51 3,902 4,900 968.52 3,922 4,939 968.53 3,942 4,978 968.54 3,962 5,018 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 968.55 3,982 5,057 968.56 4,002 5,097 968.57 4,021 5,137 968.58 4,041 5,178 968.59 4,061 5,218 968.60 4,081 5,259 968.61 4,101 5,300 968.62 4,121 5,341 968.63 4,141 5,382 968.64 4,160 5,424 968.65 4,180 5,465 968.66 4,200 5,507 968.67 4,220 5,549 968.68 4,240 5,592 968.69 4,260 5,634 968.70 4,280 5,677 968.71 4,299 5,720 968.72 4,319 5,763 968.73 4,339 5,806 968.74 4,359 5,850 968.75 4,379 5,893 968.76 4,399 5,937 968.77 4,418 5,981 968.78 4,438 6,026 968.79 4,458 6,070 968.80 4,478 6,115 968.81 4,498 6,160 968.82 4,518 6,205 968.83 4,538 6,250 968.84 4,557 6,295 968.85 4,577 6,341 968.86 4,597 6,387 968.87 4,617 6,433 968.88 4,637 6,479 968.89 4,657 6,526 968.90 4,676 6,572 968.91 4,696 6,619 968.92 4,716 6,666 968.93 4,736 6,714 968.94 4,756 6,761 968.95 4,776 6,809 968.96 4,796 6,857 968.97 4,815 6,905 968.98 4,835 6,953 968.99 4,855 7,001 969.00 4,875 7,050 969.01 4,875 7,099 969.02 4,875 7,147 969.03 4,875 7,196 969.04 4,875 7,245 969.05 4,875 7,294 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 64HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.06 4,875 7,342 969.07 4,875 7,391 969.08 4,875 7,440 969.09 4,875 7,489 969.10 4,875 7,538 969.11 4,875 7,586 969.12 4,875 7,635 969.13 4,875 7,684 969.14 4,875 7,732 969.15 4,875 7,781 969.16 4,875 7,830 969.17 4,875 7,879 969.18 4,875 7,927 969.19 4,875 7,976 969.20 4,875 8,025 969.21 4,875 8,074 969.22 4,875 8,123 969.23 4,875 8,171 969.24 4,875 8,220 969.25 4,875 8,269 969.26 4,875 8,317 969.27 4,875 8,366 969.28 4,875 8,415 969.29 4,875 8,464 969.30 4,875 8,512 969.31 4,875 8,561 969.32 4,875 8,610 969.33 4,875 8,659 969.34 4,875 8,708 969.35 4,875 8,756 969.36 4,875 8,805 969.37 4,875 8,854 969.38 4,875 8,902 969.39 4,875 8,951 969.40 4,875 9,000 969.41 4,875 9,049 969.42 4,875 9,097 969.43 4,875 9,146 969.44 4,875 9,195 969.45 4,875 9,244 969.46 4,875 9,293 969.47 4,875 9,341 969.48 4,875 9,390 969.49 4,875 9,439 969.50 4,875 9,488 969.51 4,875 9,536 969.52 4,875 9,585 969.53 4,875 9,634 969.54 4,875 9,682 969.55 4,875 9,731 969.56 4,875 9,780 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.57 4,875 9,829 969.58 4,875 9,878 969.59 4,875 9,926 969.60 4,875 9,975 969.61 4,875 10,024 969.62 4,875 10,073 969.63 4,875 10,121 969.64 4,875 10,170 969.65 4,875 10,219 969.66 4,875 10,267 969.67 4,875 10,316 969.68 4,875 10,365 969.69 4,875 10,414 969.70 4,875 10,463 969.71 4,875 10,511 969.72 4,875 10,560 969.73 4,875 10,609 969.74 4,875 10,658 969.75 4,875 10,706 969.76 4,875 10,755 969.77 4,875 10,804 969.78 4,875 10,852 969.79 4,875 10,901 969.80 4,875 10,950 969.81 4,875 10,999 969.82 4,875 11,048 969.83 4,875 11,096 969.84 4,875 11,145 969.85 4,875 11,194 969.86 4,875 11,243 969.87 4,875 11,291 969.88 4,875 11,340 969.89 4,875 11,389 969.90 4,875 11,437 969.91 4,875 11,486 969.92 4,875 11,535 969.93 4,875 11,584 969.94 4,875 11,633 969.95 4,875 11,681 969.96 4,875 11,730 969.97 4,875 11,779 969.98 4,875 11,828 969.99 4,875 11,876 970.00 4,875 11,925 970.01 4,875 11,974 970.02 4,875 12,022 970.03 4,875 12,071 970.04 4,875 12,120 970.05 4,875 12,169 970.06 4,875 12,217 970.07 4,875 12,266 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 65HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.08 4,875 12,315 970.09 4,875 12,364 970.10 4,875 12,413 970.11 4,875 12,461 970.12 4,875 12,510 970.13 4,875 12,559 970.14 4,875 12,607 970.15 4,875 12,656 970.16 4,875 12,705 970.17 4,875 12,754 970.18 4,875 12,802 970.19 4,875 12,851 970.20 4,875 12,900 970.21 4,875 12,949 970.22 4,875 12,998 970.23 4,875 13,046 970.24 4,875 13,095 970.25 4,875 13,144 970.26 4,875 13,192 970.27 4,875 13,241 970.28 4,875 13,290 970.29 4,875 13,339 970.30 4,875 13,387 970.31 4,875 13,436 970.32 4,875 13,485 970.33 4,875 13,534 970.34 4,875 13,583 970.35 4,875 13,631 970.36 4,875 13,680 970.37 4,875 13,729 970.38 4,875 13,777 970.39 4,875 13,826 970.40 4,875 13,875 970.41 4,875 13,924 970.42 4,875 13,972 970.43 4,875 14,021 970.44 4,875 14,070 970.45 4,875 14,119 970.46 4,875 14,168 970.47 4,875 14,216 970.48 4,875 14,265 970.49 4,875 14,314 970.50 4,875 14,363 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 66HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: FILTRATION BASIN 3 Inflow Area = 0.298 ac, 26.86% Impervious, Inflow Depth = 2.73" for 10y 24hr AT-14 event Inflow = 1.20 cfs @ 12.17 hrs, Volume= 0.068 af Outflow = 0.05 cfs @ 12.61 hrs, Volume= 0.028 af, Atten= 95%, Lag= 26.1 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 0.05 cfs @ 12.61 hrs, Volume= 0.028 af Routed to Reach DA 2 : DA 2- TOTAL EX 2 Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 965.74' @ 13.63 hrs Surf.Area= 1,483 sf Storage= 2,098 cf Plug-Flow detention time= 301.2 min calculated for 0.028 af (41% of inflow) Center-of-Mass det. time= 204.4 min ( 990.0 - 785.6 ) Volume Invert Avail.Storage Storage Description #1 964.00' 2,785 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 964.00 527 0 0 965.00 1,483 1,005 1,005 966.20 1,483 1,780 2,785 Device Routing Invert Outlet Devices #1 Primary 961.50'6.0" Round OUTLET PIPE L= 61.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 961.50' / 961.00' S= 0.0082 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 965.50'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 966.00'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 964.00'1.600 in/hr Exfiltration over Surface area above 961.50' Excluded Surface area = 0 sf #5 Device 2 961.50'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 964.00'0.600 in/hr Exfiltration into Rock over Surface area from 960.90' - 961.50' Excluded Surface area = 0 sf Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' (Free Discharge) 6=Exfiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=0.05 cfs @ 12.61 hrs HW=965.61' (Free Discharge) 1=OUTLET PIPE (Passes 0.05 cfs of 1.33 cfs potential flow) 2=RIM- Orifice/Grate (Passes 0.05 cfs of 0.08 cfs potential flow) 5=Orifice 6" draintile (Passes 0.05 cfs of 0.32 cfs potential flow) 4=Exfiltration (Exfiltration Controls 0.05 cfs) 3=EOF ( Controls 0.00 cfs) 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 67HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 3P: FILTRATION BASIN 3 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Inflow Area=0.298 ac Peak Elev=965.74' Storage=2,098 cf 1.20 cfs 0.05 cfs 0.00 cfs0.05 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 68HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 964.00 527 0 964.01 537 5 964.02 546 11 964.03 556 16 964.04 565 22 964.05 575 28 964.06 584 33 964.07 594 39 964.08 603 45 964.09 613 51 964.10 623 57 964.11 632 64 964.12 642 70 964.13 651 77 964.14 661 83 964.15 670 90 964.16 680 97 964.17 690 103 964.18 699 110 964.19 709 117 964.20 718 125 964.21 728 132 964.22 737 139 964.23 747 146 964.24 756 154 964.25 766 162 964.26 776 169 964.27 785 177 964.28 795 185 964.29 804 193 964.30 814 201 964.31 823 209 964.32 833 218 964.33 842 226 964.34 852 234 964.35 862 243 964.36 871 252 964.37 881 260 964.38 890 269 964.39 900 278 964.40 909 287 964.41 919 296 964.42 929 306 964.43 938 315 964.44 948 324 964.45 957 334 964.46 967 344 964.47 976 353 964.48 986 363 964.49 995 373 964.50 1,005 383 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 964.51 1,015 393 964.52 1,024 403 964.53 1,034 414 964.54 1,043 424 964.55 1,053 434 964.56 1,062 445 964.57 1,072 456 964.58 1,081 466 964.59 1,091 477 964.60 1,101 488 964.61 1,110 499 964.62 1,120 510 964.63 1,129 522 964.64 1,139 533 964.65 1,148 545 964.66 1,158 556 964.67 1,168 568 964.68 1,177 579 964.69 1,187 591 964.70 1,196 603 964.71 1,206 615 964.72 1,215 627 964.73 1,225 639 964.74 1,234 652 964.75 1,244 664 964.76 1,254 677 964.77 1,263 689 964.78 1,273 702 964.79 1,282 715 964.80 1,292 728 964.81 1,301 740 964.82 1,311 754 964.83 1,320 767 964.84 1,330 780 964.85 1,340 793 964.86 1,349 807 964.87 1,359 820 964.88 1,368 834 964.89 1,378 848 964.90 1,387 861 964.91 1,397 875 964.92 1,407 889 964.93 1,416 904 964.94 1,426 918 964.95 1,435 932 964.96 1,445 946 964.97 1,454 961 964.98 1,464 976 964.99 1,473 990 965.00 1,483 1,005 965.01 1,483 1,020 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 69HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 965.02 1,483 1,035 965.03 1,483 1,049 965.04 1,483 1,064 965.05 1,483 1,079 965.06 1,483 1,094 965.07 1,483 1,109 965.08 1,483 1,124 965.09 1,483 1,138 965.10 1,483 1,153 965.11 1,483 1,168 965.12 1,483 1,183 965.13 1,483 1,198 965.14 1,483 1,213 965.15 1,483 1,227 965.16 1,483 1,242 965.17 1,483 1,257 965.18 1,483 1,272 965.19 1,483 1,287 965.20 1,483 1,302 965.21 1,483 1,316 965.22 1,483 1,331 965.23 1,483 1,346 965.24 1,483 1,361 965.25 1,483 1,376 965.26 1,483 1,391 965.27 1,483 1,405 965.28 1,483 1,420 965.29 1,483 1,435 965.30 1,483 1,450 965.31 1,483 1,465 965.32 1,483 1,480 965.33 1,483 1,494 965.34 1,483 1,509 965.35 1,483 1,524 965.36 1,483 1,539 965.37 1,483 1,554 965.38 1,483 1,569 965.39 1,483 1,583 965.40 1,483 1,598 965.41 1,483 1,613 965.42 1,483 1,628 965.43 1,483 1,643 965.44 1,483 1,658 965.45 1,483 1,672 965.46 1,483 1,687 965.47 1,483 1,702 965.48 1,483 1,717 965.49 1,483 1,732 965.50 1,483 1,747 965.51 1,483 1,761 965.52 1,483 1,776 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 965.53 1,483 1,791 965.54 1,483 1,806 965.55 1,483 1,821 965.56 1,483 1,835 965.57 1,483 1,850 965.58 1,483 1,865 965.59 1,483 1,880 965.60 1,483 1,895 965.61 1,483 1,910 965.62 1,483 1,924 965.63 1,483 1,939 965.64 1,483 1,954 965.65 1,483 1,969 965.66 1,483 1,984 965.67 1,483 1,999 965.68 1,483 2,013 965.69 1,483 2,028 965.70 1,483 2,043 965.71 1,483 2,058 965.72 1,483 2,073 965.73 1,483 2,088 965.74 1,483 2,102 965.75 1,483 2,117 965.76 1,483 2,132 965.77 1,483 2,147 965.78 1,483 2,162 965.79 1,483 2,177 965.80 1,483 2,191 965.81 1,483 2,206 965.82 1,483 2,221 965.83 1,483 2,236 965.84 1,483 2,251 965.85 1,483 2,266 965.86 1,483 2,280 965.87 1,483 2,295 965.88 1,483 2,310 965.89 1,483 2,325 965.90 1,483 2,340 965.91 1,483 2,355 965.92 1,483 2,369 965.93 1,483 2,384 965.94 1,483 2,399 965.95 1,483 2,414 965.96 1,483 2,429 965.97 1,483 2,444 965.98 1,483 2,458 965.99 1,483 2,473 966.00 1,483 2,488 966.01 1,483 2,503 966.02 1,483 2,518 966.03 1,483 2,532 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 70HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.04 1,483 2,547 966.05 1,483 2,562 966.06 1,483 2,577 966.07 1,483 2,592 966.08 1,483 2,607 966.09 1,483 2,621 966.10 1,483 2,636 966.11 1,483 2,651 966.12 1,483 2,666 966.13 1,483 2,681 966.14 1,483 2,696 966.15 1,483 2,710 966.16 1,483 2,725 966.17 1,483 2,740 966.18 1,483 2,755 966.19 1,483 2,770 966.20 1,483 2,785 966.21 1,483 2,785 966.22 1,483 2,785 966.23 1,483 2,785 966.24 1,483 2,785 966.25 1,483 2,785 966.26 1,483 2,785 966.27 1,483 2,785 966.28 1,483 2,785 966.29 1,483 2,785 966.30 1,483 2,785 966.31 1,483 2,785 966.32 1,483 2,785 966.33 1,483 2,785 966.34 1,483 2,785 966.35 1,483 2,785 966.36 1,483 2,785 966.37 1,483 2,785 966.38 1,483 2,785 966.39 1,483 2,785 966.40 1,483 2,785 966.41 1,483 2,785 966.42 1,483 2,785 966.43 1,483 2,785 966.44 1,483 2,785 966.45 1,483 2,785 966.46 1,483 2,785 966.47 1,483 2,785 966.48 1,483 2,785 966.49 1,483 2,785 966.50 1,483 2,785 966.51 1,483 2,785 966.52 1,483 2,785 966.53 1,483 2,785 966.54 1,483 2,785 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.55 1,483 2,785 966.56 1,483 2,785 966.57 1,483 2,785 966.58 1,483 2,785 966.59 1,483 2,785 966.60 1,483 2,785 966.61 1,483 2,785 966.62 1,483 2,785 966.63 1,483 2,785 966.64 1,483 2,785 966.65 1,483 2,785 966.66 1,483 2,785 966.67 1,483 2,785 966.68 1,483 2,785 966.69 1,483 2,785 966.70 1,483 2,785 966.71 1,483 2,785 966.72 1,483 2,785 966.73 1,483 2,785 966.74 1,483 2,785 966.75 1,483 2,785 966.76 1,483 2,785 966.77 1,483 2,785 966.78 1,483 2,785 966.79 1,483 2,785 966.80 1,483 2,785 966.81 1,483 2,785 966.82 1,483 2,785 966.83 1,483 2,785 966.84 1,483 2,785 966.85 1,483 2,785 966.86 1,483 2,785 966.87 1,483 2,785 966.88 1,483 2,785 966.89 1,483 2,785 966.90 1,483 2,785 966.91 1,483 2,785 966.92 1,483 2,785 966.93 1,483 2,785 966.94 1,483 2,785 966.95 1,483 2,785 966.96 1,483 2,785 966.97 1,483 2,785 966.98 1,483 2,785 966.99 1,483 2,785 967.00 1,483 2,785 967.01 1,483 2,785 967.02 1,483 2,785 967.03 1,483 2,785 967.04 1,483 2,785 967.05 1,483 2,785 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 71HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.06 1,483 2,785 967.07 1,483 2,785 967.08 1,483 2,785 967.09 1,483 2,785 967.10 1,483 2,785 967.11 1,483 2,785 967.12 1,483 2,785 967.13 1,483 2,785 967.14 1,483 2,785 967.15 1,483 2,785 967.16 1,483 2,785 967.17 1,483 2,785 967.18 1,483 2,785 967.19 1,483 2,785 967.20 1,483 2,785 967.21 1,483 2,785 967.22 1,483 2,785 967.23 1,483 2,785 967.24 1,483 2,785 967.25 1,483 2,785 967.26 1,483 2,785 967.27 1,483 2,785 967.28 1,483 2,785 967.29 1,483 2,785 967.30 1,483 2,785 967.31 1,483 2,785 967.32 1,483 2,785 967.33 1,483 2,785 967.34 1,483 2,785 967.35 1,483 2,785 967.36 1,483 2,785 967.37 1,483 2,785 967.38 1,483 2,785 967.39 1,483 2,785 967.40 1,483 2,785 967.41 1,483 2,785 967.42 1,483 2,785 967.43 1,483 2,785 967.44 1,483 2,785 967.45 1,483 2,785 967.46 1,483 2,785 967.47 1,483 2,785 967.48 1,483 2,785 967.49 1,483 2,785 967.50 1,483 2,785 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 72HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4P: WETLAND A [44] Hint: Outlet device #2 is below defined storage Inflow Area = 3.209 ac, 14.54% Impervious, Inflow Depth = 2.36" for 10y 24hr AT-14 event Inflow = 9.18 cfs @ 12.18 hrs, Volume= 0.630 af Outflow = 3.22 cfs @ 12.49 hrs, Volume= 0.630 af, Atten= 65%, Lag= 18.5 min Primary = 3.22 cfs @ 12.49 hrs, Volume= 0.630 af Routed to Reach DA 1 : DRAINAGE AREA 1- TOTAL TO WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 970.39' @ 12.49 hrs Surf.Area= 14,440 sf Storage= 9,693 cf Plug-Flow detention time= 101.4 min calculated for 0.630 af (100% of inflow) Center-of-Mass det. time= 101.4 min ( 930.4 - 829.0 ) Volume Invert Avail.Storage Storage Description #1 969.62' 19,559 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 969.62 11,466 0 0 970.00 12,137 4,485 4,485 971.00 18,012 15,075 19,559 Device Routing Invert Outlet Devices #1 Primary 965.00'6.0" Round OUTLET PIPE- Culvert L= 29.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 965.00' / 963.50' S= 0.0517 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 0.20 sf #2 Device 1 969.60'24.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 970.25'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=3.22 cfs @ 12.49 hrs HW=970.39' (Free Discharge) 1=OUTLET PIPE- Culvert (Inlet Controls 1.89 cfs @ 9.63 fps) 2=Orifice/Grate (Passes 1.89 cfs of 3.51 cfs potential flow) 3=Broad-Crested Rectangular Weir (Weir Controls 1.33 cfs @ 0.94 fps) 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 73HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 4P: WETLAND A Inflow Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.209 ac Peak Elev=970.39' Storage=9,693 cf 9.18 cfs 3.22 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 74HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: WETLAND A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.62 11,466 0 969.63 11,484 115 969.64 11,501 230 969.65 11,519 345 969.66 11,537 460 969.67 11,554 576 969.68 11,572 691 969.69 11,590 807 969.70 11,607 923 969.71 11,625 1,039 969.72 11,643 1,155 969.73 11,660 1,272 969.74 11,678 1,389 969.75 11,696 1,506 969.76 11,713 1,623 969.77 11,731 1,740 969.78 11,749 1,857 969.79 11,766 1,975 969.80 11,784 2,092 969.81 11,802 2,210 969.82 11,819 2,329 969.83 11,837 2,447 969.84 11,854 2,565 969.85 11,872 2,684 969.86 11,890 2,803 969.87 11,907 2,922 969.88 11,925 3,041 969.89 11,943 3,160 969.90 11,960 3,280 969.91 11,978 3,399 969.92 11,996 3,519 969.93 12,013 3,639 969.94 12,031 3,760 969.95 12,049 3,880 969.96 12,066 4,001 969.97 12,084 4,121 969.98 12,102 4,242 969.99 12,119 4,363 970.00 12,137 4,485 970.01 12,196 4,606 970.02 12,254 4,728 970.03 12,313 4,851 970.04 12,372 4,975 970.05 12,431 5,099 970.06 12,490 5,223 970.07 12,548 5,349 970.08 12,607 5,474 970.09 12,666 5,601 970.10 12,725 5,728 970.11 12,783 5,855 970.12 12,842 5,983 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.13 12,901 6,112 970.14 12,959 6,241 970.15 13,018 6,371 970.16 13,077 6,502 970.17 13,136 6,633 970.18 13,194 6,764 970.19 13,253 6,897 970.20 13,312 7,029 970.21 13,371 7,163 970.22 13,430 7,297 970.23 13,488 7,431 970.24 13,547 7,567 970.25 13,606 7,702 970.26 13,664 7,839 970.27 13,723 7,976 970.28 13,782 8,113 970.29 13,841 8,251 970.30 13,899 8,390 970.31 13,958 8,529 970.32 14,017 8,669 970.33 14,076 8,810 970.34 14,135 8,951 970.35 14,193 9,092 970.36 14,252 9,235 970.37 14,311 9,377 970.38 14,369 9,521 970.39 14,428 9,665 970.40 14,487 9,809 970.41 14,546 9,955 970.42 14,604 10,100 970.43 14,663 10,247 970.44 14,722 10,394 970.45 14,781 10,541 970.46 14,840 10,689 970.47 14,898 10,838 970.48 14,957 10,987 970.49 15,016 11,137 970.50 15,075 11,287 970.51 15,133 11,438 970.52 15,192 11,590 970.53 15,251 11,742 970.54 15,309 11,895 970.55 15,368 12,049 970.56 15,427 12,202 970.57 15,486 12,357 970.58 15,545 12,512 970.59 15,603 12,668 970.60 15,662 12,824 970.61 15,721 12,981 970.62 15,780 13,139 970.63 15,838 13,297 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 10y 24hr AT-14 Rainfall=4.26"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 75HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: WETLAND A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.64 15,897 13,455 970.65 15,956 13,615 970.66 16,014 13,775 970.67 16,073 13,935 970.68 16,132 14,096 970.69 16,191 14,258 970.70 16,250 14,420 970.71 16,308 14,583 970.72 16,367 14,746 970.73 16,426 14,910 970.74 16,485 15,075 970.75 16,543 15,240 970.76 16,602 15,405 970.77 16,661 15,572 970.78 16,719 15,739 970.79 16,778 15,906 970.80 16,837 16,074 970.81 16,896 16,243 970.82 16,955 16,412 970.83 17,013 16,582 970.84 17,072 16,752 970.85 17,131 16,923 970.86 17,190 17,095 970.87 17,248 17,267 970.88 17,307 17,440 970.89 17,366 17,613 970.90 17,424 17,787 970.91 17,483 17,962 970.92 17,542 18,137 970.93 17,601 18,313 970.94 17,660 18,489 970.95 17,718 18,666 970.96 17,777 18,843 970.97 17,836 19,021 970.98 17,895 19,200 970.99 17,953 19,379 971.00 18,012 19,559 971.01 18,012 19,559 971.02 18,012 19,559 971.03 18,012 19,559 971.04 18,012 19,559 971.05 18,012 19,559 971.06 18,012 19,559 971.07 18,012 19,559 971.08 18,012 19,559 971.09 18,012 19,559 971.10 18,012 19,559 971.11 18,012 19,559 971.12 18,012 19,559 971.13 18,012 19,559 971.14 18,012 19,559 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 971.15 18,012 19,559 971.16 18,012 19,559 971.17 18,012 19,559 971.18 18,012 19,559 971.19 18,012 19,559 971.20 18,012 19,559 971.21 18,012 19,559 971.22 18,012 19,559 971.23 18,012 19,559 971.24 18,012 19,559 971.25 18,012 19,559 971.26 18,012 19,559 971.27 18,012 19,559 971.28 18,012 19,559 971.29 18,012 19,559 971.30 18,012 19,559 971.31 18,012 19,559 971.32 18,012 19,559 971.33 18,012 19,559 971.34 18,012 19,559 971.35 18,012 19,559 971.36 18,012 19,559 971.37 18,012 19,559 971.38 18,012 19,559 971.39 18,012 19,559 971.40 18,012 19,559 971.41 18,012 19,559 971.42 18,012 19,559 971.43 18,012 19,559 971.44 18,012 19,559 971.45 18,012 19,559 971.46 18,012 19,559 971.47 18,012 19,559 971.48 18,012 19,559 971.49 18,012 19,559 971.50 18,012 19,559 971.51 18,012 19,559 971.52 18,012 19,559 971.53 18,012 19,559 971.54 18,012 19,559 971.55 18,012 19,559 971.56 18,012 19,559 971.57 18,012 19,559 971.58 18,012 19,559 971.59 18,012 19,559 971.60 18,012 19,559 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 76HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-Q Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Runoff Area=74,865 sf 8.12% Impervious Runoff Depth=5.20"Subcatchment OFFSITE B: OFFSITE B - Tc=10.0 min CN=WQ Runoff=13.40 cfs 0.744 af Runoff Area=49,573 sf 17.90% Impervious Runoff Depth=5.40"Subcatchment OUTSITE A: OFFSITE A - Tc=10.0 min CN=WQ Runoff=9.07 cfs 0.512 af Runoff Area=3,248 sf 100.00% Impervious Runoff Depth=7.12"Subcatchment PR1A: PR1A - DRAINS Tc=10.0 min CN=WQ Runoff=0.70 cfs 0.044 af Runoff Area=30,432 sf 23.96% Impervious Runoff Depth=5.53"Subcatchment PR1B: PR1B - DRAINS Tc=10.0 min CN=WQ Runoff=5.64 cfs 0.322 af Runoff Area=34,488 sf 20.19% Impervious Runoff Depth=5.45"Subcatchment PR1C: PR1C - DRAINS Tc=10.0 min CN=WQ Runoff=6.34 cfs 0.360 af Runoff Area=6,877 sf 0.00% Impervious Runoff Depth=5.03"Subcatchment PR2A: PR2C - DRAINS Tc=10.0 min CN=WQ Runoff=1.21 cfs 0.066 af Runoff Area=9,970 sf 30.15% Impervious Runoff Depth=5.66"Subcatchment PR2B: PR2B - DRAINS Tc=10.0 min CN=WQ Runoff=1.87 cfs 0.108 af Runoff Area=12,962 sf 26.86% Impervious Runoff Depth=5.59"Subcatchment PR2C: PR2C - DRAINS Tc=10.0 min CN=WQ Runoff=2.42 cfs 0.139 af Inflow=15.36 cfs 1.383 afReach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A Outflow=15.36 cfs 1.383 af Inflow=1.80 cfs 0.134 afReach DA 2: DA 2- TOTAL EX 2 Outflow=1.80 cfs 0.134 af Inflow=24.27 cfs 2.095 afReach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Outflow=24.27 cfs 2.095 af Peak Elev=977.48' Storage=4,494 cf Inflow=6.34 cfs 0.360 afPond 1P: FILTRATION BASIN 1 Discarded=0.00 cfs 0.000 af Primary=5.97 cfs 0.317 af Outflow=5.97 cfs 0.317 af Peak Elev=968.13' Storage=3,551 cf Inflow=1.87 cfs 0.108 afPond 2P: FILTRATION BASIN 2 Discarded=0.00 cfs 0.000 af Primary=0.09 cfs 0.035 af Outflow=0.09 cfs 0.035 af Peak Elev=966.17' Storage=2,740 cf Inflow=2.42 cfs 0.139 afPond 3P: FILTRATION BASIN 3 Discarded=0.00 cfs 0.000 af Primary=1.80 cfs 0.099 af Outflow=1.80 cfs 0.099 af Peak Elev=970.88' Storage=17,378 cf Inflow=24.75 cfs 1.383 afPond 4P: WETLAND A Outflow=15.36 cfs 1.383 af Total Runoff Area = 5.106 ac Runoff Volume = 2.295 af Average Runoff Depth = 5.39" 82.49% Pervious = 4.212 ac 17.51% Impervious = 0.894 ac 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 77HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND Runoff = 13.40 cfs @ 12.17 hrs, Volume= 0.744 af, Depth= 5.20" Routed to Pond 4P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 6,076 98 Paved parking, HSG C 68,789 80 Pasture/grassland/range, Good, HSG D 74,865 Weighted Average 68,789 91.88% Pervious Area 6,076 8.12% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=74,865 sf Runoff Volume=0.744 af Runoff Depth=5.20" Tc=10.0 min CN=WQ 13.40 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 78HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B Runoff = 9.07 cfs @ 12.17 hrs, Volume= 0.512 af, Depth= 5.40" Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 8,875 98 Paved parking, HSG C 40,698 80 Pasture/grassland/range, Good, HSG D 49,573 Weighted Average 40,698 82.10% Pervious Area 8,875 17.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=49,573 sf Runoff Volume=0.512 af Runoff Depth=5.40" Tc=10.0 min CN=WQ 9.07 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 79HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1A: PR1A - DRAINS EAST ALONG STREET Runoff = 0.70 cfs @ 12.17 hrs, Volume= 0.044 af, Depth= 7.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 3,248 98 Paved parking, HSG C 0 80 Pasture/grassland/range, Good, HSG D 3,248 Weighted Average 3,248 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1A: PR1A - DRAINS EAST ALONG STREET Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=3,248 sf Runoff Volume=0.044 af Runoff Depth=7.12" Tc=10.0 min CN=WQ 0.70 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 80HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1B: PR1B - DRAINS SOUTH TO WETLAND A Runoff = 5.64 cfs @ 12.17 hrs, Volume= 0.322 af, Depth= 5.53" Routed to Pond 4P : WETLAND A Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 7,290 98 Paved parking, HSG C 23,142 80 Pasture/grassland/range, Good, HSG D 30,432 Weighted Average 23,142 76.04% Pervious Area 7,290 23.96% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1B: PR1B - DRAINS SOUTH TO WETLAND A Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=30,432 sf Runoff Volume=0.322 af Runoff Depth=5.53" Tc=10.0 min CN=WQ 5.64 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 81HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN Runoff = 6.34 cfs @ 12.17 hrs, Volume= 0.360 af, Depth= 5.45" Routed to Pond 1P : FILTRATION BASIN 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 6,962 98 Paved parking, HSG C 27,526 80 Pasture/grassland/range, Good, HSG D 34,488 Weighted Average 27,526 79.81% Pervious Area 6,962 20.19% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=34,488 sf Runoff Volume=0.360 af Runoff Depth=5.45" Tc=10.0 min CN=WQ 6.34 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 82HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2A: PR2C - DRAINS SOUTH TO WETLAND B Runoff = 1.21 cfs @ 12.17 hrs, Volume= 0.066 af, Depth= 5.03" Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 0 98 Paved parking, HSG C 6,877 80 Pasture/grassland/range, Good, HSG D 6,877 Weighted Average 6,877 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2A: PR2C - DRAINS SOUTH TO WETLAND B Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=6,877 sf Runoff Volume=0.066 af Runoff Depth=5.03" Tc=10.0 min CN=WQ 1.21 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 83HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN Runoff = 1.87 cfs @ 12.17 hrs, Volume= 0.108 af, Depth= 5.66" Routed to Pond 2P : FILTRATION BASIN 2 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 3,006 98 Paved parking, HSG C 6,964 80 Pasture/grassland/range, Good, HSG D 9,970 Weighted Average 6,964 69.85% Pervious Area 3,006 30.15% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=9,970 sf Runoff Volume=0.108 af Runoff Depth=5.66" Tc=10.0 min CN=WQ 1.87 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 84HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN Runoff = 2.42 cfs @ 12.17 hrs, Volume= 0.139 af, Depth= 5.59" Routed to Pond 3P : FILTRATION BASIN 3 Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Area (sf) CN Description 3,481 98 Paved parking, HSG C 9,481 80 Pasture/grassland/range, Good, HSG D 12,962 Weighted Average 9,481 73.14% Pervious Area 3,481 26.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36" Runoff Area=12,962 sf Runoff Volume=0.139 af Runoff Depth=5.59" Tc=10.0 min CN=WQ 2.42 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 85HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 3.209 ac, 14.54% Impervious, Inflow Depth = 5.17" for 100y 24hr AT-14 event Inflow = 15.36 cfs @ 12.29 hrs, Volume= 1.383 af Outflow = 15.36 cfs @ 12.29 hrs, Volume= 1.383 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=3.209 ac 15.36 cfs 15.36 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 86HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 2: DA 2- TOTAL EX 2 [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.526 ac, 28.29% Impervious, Inflow Depth = 3.05" for 100y 24hr AT-14 event Inflow = 1.80 cfs @ 12.25 hrs, Volume= 0.134 af Outflow = 1.80 cfs @ 12.25 hrs, Volume= 0.134 af, Atten= 0%, Lag= 0.0 min Routed to Reach DA 3 : PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 2: DA 2- TOTAL EX 2 Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=0.526 ac 1.80 cfs 1.80 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 87HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 5.031 ac, 16.28% Impervious, Inflow Depth = 5.00" for 100y 24hr AT-14 event Inflow = 24.27 cfs @ 12.24 hrs, Volume= 2.095 af Outflow = 24.27 cfs @ 12.24 hrs, Volume= 2.095 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B Inflow Outflow Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=5.031 ac 24.27 cfs 24.27 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 88HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 1P: FILTRATION BASIN 1 Inflow Area = 0.792 ac, 20.19% Impervious, Inflow Depth = 5.45" for 100y 24hr AT-14 event Inflow = 6.34 cfs @ 12.17 hrs, Volume= 0.360 af Outflow = 5.97 cfs @ 12.20 hrs, Volume= 0.317 af, Atten= 6%, Lag= 1.8 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 5.97 cfs @ 12.20 hrs, Volume= 0.317 af Routed to Pond 4P : WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 977.48' @ 12.20 hrs Surf.Area= 2,793 sf Storage= 4,494 cf Plug-Flow detention time= 146.8 min calculated for 0.317 af (88% of inflow) Center-of-Mass det. time= 99.6 min ( 879.2 - 779.5 ) Volume Invert Avail.Storage Storage Description #1 975.60' 4,563 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 975.60 1,701 0 0 976.00 2,043 749 749 977.00 2,793 2,418 3,167 977.50 2,793 1,397 4,563 Device Routing Invert Outlet Devices #1 Primary 973.10'6.0" Round OUTLET PIPE L= 23.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 973.10' / 971.50' S= 0.0696 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 976.50'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 977.10'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 975.60'1.600 in/hr Exfiltration over Surface area above 973.10' Excluded Surface area = 0 sf #5 Device 2 973.10'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 975.60'0.600 in/hr Exfiltration-Infiltration into Rock over Surface area from 972.50' - 973.10' Excluded Surface area = 0 sf 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 89HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=975.60' (Free Discharge) 6=Exfiltration-Infiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=5.96 cfs @ 12.20 hrs HW=977.47' (Free Discharge) 1=OUTLET PIPE (Passes 0.10 cfs of 1.69 cfs potential flow) 2=RIM- Orifice/Grate (Passes 0.10 cfs of 5.11 cfs potential flow) 5=Orifice 6" draintile (Passes 0.10 cfs of 0.93 cfs potential flow) 4=Exfiltration (Exfiltration Controls 0.10 cfs) 3=EOF (Weir Controls 5.85 cfs @ 1.56 fps) Pond 1P: FILTRATION BASIN 1 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=0.792 ac Peak Elev=977.48' Storage=4,494 cf 6.34 cfs 5.97 cfs 0.00 cfs 5.97 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 90HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 975.60 1,701 0 975.61 1,710 17 975.62 1,718 34 975.63 1,727 51 975.64 1,735 69 975.65 1,744 86 975.66 1,752 104 975.67 1,761 121 975.68 1,769 139 975.69 1,778 157 975.70 1,787 174 975.71 1,795 192 975.72 1,804 210 975.73 1,812 228 975.74 1,821 247 975.75 1,829 265 975.76 1,838 283 975.77 1,846 302 975.78 1,855 320 975.79 1,863 339 975.80 1,872 357 975.81 1,881 376 975.82 1,889 395 975.83 1,898 414 975.84 1,906 433 975.85 1,915 452 975.86 1,923 471 975.87 1,932 490 975.88 1,940 510 975.89 1,949 529 975.90 1,957 549 975.91 1,966 568 975.92 1,975 588 975.93 1,983 608 975.94 1,992 628 975.95 2,000 648 975.96 2,009 668 975.97 2,017 688 975.98 2,026 708 975.99 2,034 728 976.00 2,043 749 976.01 2,050 769 976.02 2,058 790 976.03 2,065 810 976.04 2,073 831 976.05 2,081 852 976.06 2,088 873 976.07 2,096 894 976.08 2,103 915 976.09 2,111 936 976.10 2,118 957 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 976.11 2,126 978 976.12 2,133 999 976.13 2,140 1,021 976.14 2,148 1,042 976.15 2,155 1,064 976.16 2,163 1,085 976.17 2,171 1,107 976.18 2,178 1,129 976.19 2,186 1,151 976.20 2,193 1,172 976.21 2,201 1,194 976.22 2,208 1,216 976.23 2,216 1,239 976.24 2,223 1,261 976.25 2,231 1,283 976.26 2,238 1,305 976.27 2,245 1,328 976.28 2,253 1,350 976.29 2,261 1,373 976.30 2,268 1,395 976.31 2,276 1,418 976.32 2,283 1,441 976.33 2,291 1,464 976.34 2,298 1,487 976.35 2,306 1,510 976.36 2,313 1,533 976.37 2,321 1,556 976.38 2,328 1,579 976.39 2,335 1,603 976.40 2,343 1,626 976.41 2,350 1,649 976.42 2,358 1,673 976.43 2,366 1,697 976.44 2,373 1,720 976.45 2,381 1,744 976.46 2,388 1,768 976.47 2,396 1,792 976.48 2,403 1,816 976.49 2,411 1,840 976.50 2,418 1,864 976.51 2,425 1,888 976.52 2,433 1,913 976.53 2,440 1,937 976.54 2,448 1,961 976.55 2,456 1,986 976.56 2,463 2,010 976.57 2,471 2,035 976.58 2,478 2,060 976.59 2,486 2,085 976.60 2,493 2,110 976.61 2,501 2,135 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 91HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 976.62 2,508 2,160 976.63 2,515 2,185 976.64 2,523 2,210 976.65 2,530 2,235 976.66 2,538 2,261 976.67 2,546 2,286 976.68 2,553 2,311 976.69 2,561 2,337 976.70 2,568 2,363 976.71 2,576 2,388 976.72 2,583 2,414 976.73 2,591 2,440 976.74 2,598 2,466 976.75 2,606 2,492 976.76 2,613 2,518 976.77 2,620 2,544 976.78 2,628 2,570 976.79 2,636 2,597 976.80 2,643 2,623 976.81 2,651 2,650 976.82 2,658 2,676 976.83 2,666 2,703 976.84 2,673 2,730 976.85 2,681 2,756 976.86 2,688 2,783 976.87 2,696 2,810 976.88 2,703 2,837 976.89 2,710 2,864 976.90 2,718 2,891 976.91 2,725 2,918 976.92 2,733 2,946 976.93 2,741 2,973 976.94 2,748 3,001 976.95 2,756 3,028 976.96 2,763 3,056 976.97 2,771 3,083 976.98 2,778 3,111 976.99 2,786 3,139 977.00 2,793 3,167 977.01 2,793 3,195 977.02 2,793 3,223 977.03 2,793 3,251 977.04 2,793 3,279 977.05 2,793 3,306 977.06 2,793 3,334 977.07 2,793 3,362 977.08 2,793 3,390 977.09 2,793 3,418 977.10 2,793 3,446 977.11 2,793 3,474 977.12 2,793 3,502 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 977.13 2,793 3,530 977.14 2,793 3,558 977.15 2,793 3,586 977.16 2,793 3,614 977.17 2,793 3,642 977.18 2,793 3,670 977.19 2,793 3,697 977.20 2,793 3,725 977.21 2,793 3,753 977.22 2,793 3,781 977.23 2,793 3,809 977.24 2,793 3,837 977.25 2,793 3,865 977.26 2,793 3,893 977.27 2,793 3,921 977.28 2,793 3,949 977.29 2,793 3,977 977.30 2,793 4,005 977.31 2,793 4,033 977.32 2,793 4,061 977.33 2,793 4,088 977.34 2,793 4,116 977.35 2,793 4,144 977.36 2,793 4,172 977.37 2,793 4,200 977.38 2,793 4,228 977.39 2,793 4,256 977.40 2,793 4,284 977.41 2,793 4,312 977.42 2,793 4,340 977.43 2,793 4,368 977.44 2,793 4,396 977.45 2,793 4,424 977.46 2,793 4,452 977.47 2,793 4,480 977.48 2,793 4,507 977.49 2,793 4,535 977.50 2,793 4,563 977.51 2,793 4,563 977.52 2,793 4,563 977.53 2,793 4,563 977.54 2,793 4,563 977.55 2,793 4,563 977.56 2,793 4,563 977.57 2,793 4,563 977.58 2,793 4,563 977.59 2,793 4,563 977.60 2,793 4,563 977.61 2,793 4,563 977.62 2,793 4,563 977.63 2,793 4,563 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 92HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: FILTRATION BASIN 1 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 977.64 2,793 4,563 977.65 2,793 4,563 977.66 2,793 4,563 977.67 2,793 4,563 977.68 2,793 4,563 977.69 2,793 4,563 977.70 2,793 4,563 977.71 2,793 4,563 977.72 2,793 4,563 977.73 2,793 4,563 977.74 2,793 4,563 977.75 2,793 4,563 977.76 2,793 4,563 977.77 2,793 4,563 977.78 2,793 4,563 977.79 2,793 4,563 977.80 2,793 4,563 977.81 2,793 4,563 977.82 2,793 4,563 977.83 2,793 4,563 977.84 2,793 4,563 977.85 2,793 4,563 977.86 2,793 4,563 977.87 2,793 4,563 977.88 2,793 4,563 977.89 2,793 4,563 977.90 2,793 4,563 977.91 2,793 4,563 977.92 2,793 4,563 977.93 2,793 4,563 977.94 2,793 4,563 977.95 2,793 4,563 977.96 2,793 4,563 977.97 2,793 4,563 977.98 2,793 4,563 977.99 2,793 4,563 978.00 2,793 4,563 978.01 2,793 4,563 978.02 2,793 4,563 978.03 2,793 4,563 978.04 2,793 4,563 978.05 2,793 4,563 978.06 2,793 4,563 978.07 2,793 4,563 978.08 2,793 4,563 978.09 2,793 4,563 978.10 2,793 4,563 978.11 2,793 4,563 978.12 2,793 4,563 978.13 2,793 4,563 978.14 2,793 4,563 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 978.15 2,793 4,563 978.16 2,793 4,563 978.17 2,793 4,563 978.18 2,793 4,563 978.19 2,793 4,563 978.20 2,793 4,563 978.21 2,793 4,563 978.22 2,793 4,563 978.23 2,793 4,563 978.24 2,793 4,563 978.25 2,793 4,563 978.26 2,793 4,563 978.27 2,793 4,563 978.28 2,793 4,563 978.29 2,793 4,563 978.30 2,793 4,563 978.31 2,793 4,563 978.32 2,793 4,563 978.33 2,793 4,563 978.34 2,793 4,563 978.35 2,793 4,563 978.36 2,793 4,563 978.37 2,793 4,563 978.38 2,793 4,563 978.39 2,793 4,563 978.40 2,793 4,563 978.41 2,793 4,563 978.42 2,793 4,563 978.43 2,793 4,563 978.44 2,793 4,563 978.45 2,793 4,563 978.46 2,793 4,563 978.47 2,793 4,563 978.48 2,793 4,563 978.49 2,793 4,563 978.50 2,793 4,563 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 93HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 2P: FILTRATION BASIN 2 Inflow Area = 0.229 ac, 30.15% Impervious, Inflow Depth = 5.66" for 100y 24hr AT-14 event Inflow = 1.87 cfs @ 12.17 hrs, Volume= 0.108 af Outflow = 0.09 cfs @ 13.58 hrs, Volume= 0.035 af, Atten= 95%, Lag= 84.2 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 0.09 cfs @ 13.58 hrs, Volume= 0.035 af Routed to Reach DA 2 : DA 2- TOTAL EX 2 Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 968.13' @ 13.58 hrs Surf.Area= 3,142 sf Storage= 3,551 cf Plug-Flow detention time= 369.4 min calculated for 0.035 af (33% of inflow) Center-of-Mass det. time= 259.2 min ( 1,033.1 - 774.0 ) Volume Invert Avail.Storage Storage Description #1 966.00' 14,363 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 966.00 521 0 0 967.00 1,462 992 992 968.00 2,890 2,176 3,168 969.00 4,875 3,883 7,050 970.50 4,875 7,313 14,363 Device Routing Invert Outlet Devices #1 Primary 963.50'6.0" Round OUTLET PIPE L= 70.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 963.50' / 963.00' S= 0.0071 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 968.00'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 970.25'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 966.00'1.600 in/hr Exfiltration over Surface area above 963.50' Excluded Surface area = 0 sf #5 Device 2 963.50'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 966.00'0.600 in/hr Exfiltration into Rock over Surface area from 962.90' - 963.50' Excluded Surface area = 0 sf 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 94HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=966.00' (Free Discharge) 6=Exfiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=0.10 cfs @ 13.58 hrs HW=968.13' (Free Discharge) 1=OUTLET PIPE (Passes 0.10 cfs of 1.34 cfs potential flow) 2=RIM- Orifice/Grate (Orifice Controls 0.10 cfs @ 1.21 fps) 5=Orifice 6" draintile (Passes 0.10 cfs of 0.34 cfs potential flow) 4=Exfiltration (Passes 0.10 cfs of 0.12 cfs potential flow) 3=EOF ( Controls 0.00 cfs) Pond 2P: FILTRATION BASIN 2 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=0.229 ac Peak Elev=968.13' Storage=3,551 cf 1.87 cfs 0.09 cfs 0.00 cfs0.09 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 95HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.00 521 0 966.01 530 5 966.02 540 11 966.03 549 16 966.04 559 22 966.05 568 27 966.06 577 33 966.07 587 39 966.08 596 45 966.09 606 51 966.10 615 57 966.11 625 63 966.12 634 69 966.13 643 76 966.14 653 82 966.15 662 89 966.16 672 95 966.17 681 102 966.18 690 109 966.19 700 116 966.20 709 123 966.21 719 130 966.22 728 137 966.23 737 145 966.24 747 152 966.25 756 160 966.26 766 167 966.27 775 175 966.28 784 183 966.29 794 191 966.30 803 199 966.31 813 207 966.32 822 215 966.33 832 223 966.34 841 232 966.35 850 240 966.36 860 249 966.37 869 257 966.38 879 266 966.39 888 275 966.40 897 284 966.41 907 293 966.42 916 302 966.43 926 311 966.44 935 320 966.45 944 330 966.46 954 339 966.47 963 349 966.48 973 358 966.49 982 368 966.50 992 378 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.51 1,001 388 966.52 1,010 398 966.53 1,020 408 966.54 1,029 419 966.55 1,039 429 966.56 1,048 439 966.57 1,057 450 966.58 1,067 460 966.59 1,076 471 966.60 1,086 482 966.61 1,095 493 966.62 1,104 504 966.63 1,114 515 966.64 1,123 526 966.65 1,133 537 966.66 1,142 549 966.67 1,151 560 966.68 1,161 572 966.69 1,170 583 966.70 1,180 595 966.71 1,189 607 966.72 1,199 619 966.73 1,208 631 966.74 1,217 643 966.75 1,227 655 966.76 1,236 668 966.77 1,246 680 966.78 1,255 693 966.79 1,264 705 966.80 1,274 718 966.81 1,283 731 966.82 1,293 744 966.83 1,302 757 966.84 1,311 770 966.85 1,321 783 966.86 1,330 796 966.87 1,340 809 966.88 1,349 823 966.89 1,358 836 966.90 1,368 850 966.91 1,377 864 966.92 1,387 878 966.93 1,396 891 966.94 1,406 905 966.95 1,415 920 966.96 1,424 934 966.97 1,434 948 966.98 1,443 962 966.99 1,453 977 967.00 1,462 992 967.01 1,476 1,006 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 96HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.02 1,491 1,021 967.03 1,505 1,036 967.04 1,519 1,051 967.05 1,533 1,066 967.06 1,548 1,082 967.07 1,562 1,097 967.08 1,576 1,113 967.09 1,591 1,129 967.10 1,605 1,145 967.11 1,619 1,161 967.12 1,633 1,177 967.13 1,648 1,194 967.14 1,662 1,210 967.15 1,676 1,227 967.16 1,690 1,244 967.17 1,705 1,261 967.18 1,719 1,278 967.19 1,733 1,295 967.20 1,748 1,312 967.21 1,762 1,330 967.22 1,776 1,348 967.23 1,790 1,366 967.24 1,805 1,384 967.25 1,819 1,402 967.26 1,833 1,420 967.27 1,848 1,438 967.28 1,862 1,457 967.29 1,876 1,476 967.30 1,890 1,494 967.31 1,905 1,513 967.32 1,919 1,532 967.33 1,933 1,552 967.34 1,948 1,571 967.35 1,962 1,591 967.36 1,976 1,610 967.37 1,990 1,630 967.38 2,005 1,650 967.39 2,019 1,670 967.40 2,033 1,691 967.41 2,047 1,711 967.42 2,062 1,731 967.43 2,076 1,752 967.44 2,090 1,773 967.45 2,105 1,794 967.46 2,119 1,815 967.47 2,133 1,836 967.48 2,147 1,858 967.49 2,162 1,879 967.50 2,176 1,901 967.51 2,190 1,923 967.52 2,205 1,945 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.53 2,219 1,967 967.54 2,233 1,989 967.55 2,247 2,012 967.56 2,262 2,034 967.57 2,276 2,057 967.58 2,290 2,080 967.59 2,305 2,103 967.60 2,319 2,126 967.61 2,333 2,149 967.62 2,347 2,172 967.63 2,362 2,196 967.64 2,376 2,220 967.65 2,390 2,243 967.66 2,404 2,267 967.67 2,419 2,292 967.68 2,433 2,316 967.69 2,447 2,340 967.70 2,462 2,365 967.71 2,476 2,389 967.72 2,490 2,414 967.73 2,504 2,439 967.74 2,519 2,464 967.75 2,533 2,490 967.76 2,547 2,515 967.77 2,562 2,541 967.78 2,576 2,566 967.79 2,590 2,592 967.80 2,604 2,618 967.81 2,619 2,644 967.82 2,633 2,670 967.83 2,647 2,697 967.84 2,662 2,723 967.85 2,676 2,750 967.86 2,690 2,777 967.87 2,704 2,804 967.88 2,719 2,831 967.89 2,733 2,858 967.90 2,747 2,886 967.91 2,761 2,913 967.92 2,776 2,941 967.93 2,790 2,969 967.94 2,804 2,997 967.95 2,819 3,025 967.96 2,833 3,053 967.97 2,847 3,081 967.98 2,861 3,110 967.99 2,876 3,139 968.00 2,890 3,168 968.01 2,910 3,196 968.02 2,930 3,226 968.03 2,950 3,255 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 97HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 968.04 2,969 3,285 968.05 2,989 3,314 968.06 3,009 3,344 968.07 3,029 3,375 968.08 3,049 3,405 968.09 3,069 3,436 968.10 3,089 3,466 968.11 3,108 3,497 968.12 3,128 3,529 968.13 3,148 3,560 968.14 3,168 3,592 968.15 3,188 3,623 968.16 3,208 3,655 968.17 3,227 3,687 968.18 3,247 3,720 968.19 3,267 3,752 968.20 3,287 3,785 968.21 3,307 3,818 968.22 3,327 3,851 968.23 3,347 3,885 968.24 3,366 3,918 968.25 3,386 3,952 968.26 3,406 3,986 968.27 3,426 4,020 968.28 3,446 4,055 968.29 3,466 4,089 968.30 3,485 4,124 968.31 3,505 4,159 968.32 3,525 4,194 968.33 3,545 4,229 968.34 3,565 4,265 968.35 3,585 4,301 968.36 3,605 4,337 968.37 3,624 4,373 968.38 3,644 4,409 968.39 3,664 4,446 968.40 3,684 4,482 968.41 3,704 4,519 968.42 3,724 4,556 968.43 3,744 4,594 968.44 3,763 4,631 968.45 3,783 4,669 968.46 3,803 4,707 968.47 3,823 4,745 968.48 3,843 4,783 968.49 3,863 4,822 968.50 3,883 4,861 968.51 3,902 4,900 968.52 3,922 4,939 968.53 3,942 4,978 968.54 3,962 5,018 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 968.55 3,982 5,057 968.56 4,002 5,097 968.57 4,021 5,137 968.58 4,041 5,178 968.59 4,061 5,218 968.60 4,081 5,259 968.61 4,101 5,300 968.62 4,121 5,341 968.63 4,141 5,382 968.64 4,160 5,424 968.65 4,180 5,465 968.66 4,200 5,507 968.67 4,220 5,549 968.68 4,240 5,592 968.69 4,260 5,634 968.70 4,280 5,677 968.71 4,299 5,720 968.72 4,319 5,763 968.73 4,339 5,806 968.74 4,359 5,850 968.75 4,379 5,893 968.76 4,399 5,937 968.77 4,418 5,981 968.78 4,438 6,026 968.79 4,458 6,070 968.80 4,478 6,115 968.81 4,498 6,160 968.82 4,518 6,205 968.83 4,538 6,250 968.84 4,557 6,295 968.85 4,577 6,341 968.86 4,597 6,387 968.87 4,617 6,433 968.88 4,637 6,479 968.89 4,657 6,526 968.90 4,676 6,572 968.91 4,696 6,619 968.92 4,716 6,666 968.93 4,736 6,714 968.94 4,756 6,761 968.95 4,776 6,809 968.96 4,796 6,857 968.97 4,815 6,905 968.98 4,835 6,953 968.99 4,855 7,001 969.00 4,875 7,050 969.01 4,875 7,099 969.02 4,875 7,147 969.03 4,875 7,196 969.04 4,875 7,245 969.05 4,875 7,294 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 98HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.06 4,875 7,342 969.07 4,875 7,391 969.08 4,875 7,440 969.09 4,875 7,489 969.10 4,875 7,538 969.11 4,875 7,586 969.12 4,875 7,635 969.13 4,875 7,684 969.14 4,875 7,732 969.15 4,875 7,781 969.16 4,875 7,830 969.17 4,875 7,879 969.18 4,875 7,927 969.19 4,875 7,976 969.20 4,875 8,025 969.21 4,875 8,074 969.22 4,875 8,123 969.23 4,875 8,171 969.24 4,875 8,220 969.25 4,875 8,269 969.26 4,875 8,317 969.27 4,875 8,366 969.28 4,875 8,415 969.29 4,875 8,464 969.30 4,875 8,512 969.31 4,875 8,561 969.32 4,875 8,610 969.33 4,875 8,659 969.34 4,875 8,708 969.35 4,875 8,756 969.36 4,875 8,805 969.37 4,875 8,854 969.38 4,875 8,902 969.39 4,875 8,951 969.40 4,875 9,000 969.41 4,875 9,049 969.42 4,875 9,097 969.43 4,875 9,146 969.44 4,875 9,195 969.45 4,875 9,244 969.46 4,875 9,293 969.47 4,875 9,341 969.48 4,875 9,390 969.49 4,875 9,439 969.50 4,875 9,488 969.51 4,875 9,536 969.52 4,875 9,585 969.53 4,875 9,634 969.54 4,875 9,682 969.55 4,875 9,731 969.56 4,875 9,780 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.57 4,875 9,829 969.58 4,875 9,878 969.59 4,875 9,926 969.60 4,875 9,975 969.61 4,875 10,024 969.62 4,875 10,073 969.63 4,875 10,121 969.64 4,875 10,170 969.65 4,875 10,219 969.66 4,875 10,267 969.67 4,875 10,316 969.68 4,875 10,365 969.69 4,875 10,414 969.70 4,875 10,463 969.71 4,875 10,511 969.72 4,875 10,560 969.73 4,875 10,609 969.74 4,875 10,658 969.75 4,875 10,706 969.76 4,875 10,755 969.77 4,875 10,804 969.78 4,875 10,852 969.79 4,875 10,901 969.80 4,875 10,950 969.81 4,875 10,999 969.82 4,875 11,048 969.83 4,875 11,096 969.84 4,875 11,145 969.85 4,875 11,194 969.86 4,875 11,243 969.87 4,875 11,291 969.88 4,875 11,340 969.89 4,875 11,389 969.90 4,875 11,437 969.91 4,875 11,486 969.92 4,875 11,535 969.93 4,875 11,584 969.94 4,875 11,633 969.95 4,875 11,681 969.96 4,875 11,730 969.97 4,875 11,779 969.98 4,875 11,828 969.99 4,875 11,876 970.00 4,875 11,925 970.01 4,875 11,974 970.02 4,875 12,022 970.03 4,875 12,071 970.04 4,875 12,120 970.05 4,875 12,169 970.06 4,875 12,217 970.07 4,875 12,266 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 99HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 2P: FILTRATION BASIN 2 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.08 4,875 12,315 970.09 4,875 12,364 970.10 4,875 12,413 970.11 4,875 12,461 970.12 4,875 12,510 970.13 4,875 12,559 970.14 4,875 12,607 970.15 4,875 12,656 970.16 4,875 12,705 970.17 4,875 12,754 970.18 4,875 12,802 970.19 4,875 12,851 970.20 4,875 12,900 970.21 4,875 12,949 970.22 4,875 12,998 970.23 4,875 13,046 970.24 4,875 13,095 970.25 4,875 13,144 970.26 4,875 13,192 970.27 4,875 13,241 970.28 4,875 13,290 970.29 4,875 13,339 970.30 4,875 13,387 970.31 4,875 13,436 970.32 4,875 13,485 970.33 4,875 13,534 970.34 4,875 13,583 970.35 4,875 13,631 970.36 4,875 13,680 970.37 4,875 13,729 970.38 4,875 13,777 970.39 4,875 13,826 970.40 4,875 13,875 970.41 4,875 13,924 970.42 4,875 13,972 970.43 4,875 14,021 970.44 4,875 14,070 970.45 4,875 14,119 970.46 4,875 14,168 970.47 4,875 14,216 970.48 4,875 14,265 970.49 4,875 14,314 970.50 4,875 14,363 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 100HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 3P: FILTRATION BASIN 3 Inflow Area = 0.298 ac, 26.86% Impervious, Inflow Depth = 5.59" for 100y 24hr AT-14 event Inflow = 2.42 cfs @ 12.17 hrs, Volume= 0.139 af Outflow = 1.80 cfs @ 12.25 hrs, Volume= 0.099 af, Atten= 26%, Lag= 4.5 min Discarded = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Primary = 1.80 cfs @ 12.25 hrs, Volume= 0.099 af Routed to Reach DA 2 : DA 2- TOTAL EX 2 Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 966.17' @ 12.25 hrs Surf.Area= 1,483 sf Storage= 2,740 cf Plug-Flow detention time= 201.1 min calculated for 0.099 af (71% of inflow) Center-of-Mass det. time= 130.9 min ( 906.6 - 775.8 ) Volume Invert Avail.Storage Storage Description #1 964.00' 2,785 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 964.00 527 0 0 965.00 1,483 1,005 1,005 966.20 1,483 1,780 2,785 Device Routing Invert Outlet Devices #1 Primary 961.50'6.0" Round OUTLET PIPE L= 61.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 961.50' / 961.00' S= 0.0082 '/' Cc= 0.900 n= 0.012 Concrete pipe, finished, Flow Area= 0.20 sf #2 Device 1 965.50'24.0" Vert. RIM- Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 966.00'10.0' long x 10.0' breadth EOF Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 #4 Device 5 964.00'1.600 in/hr Exfiltration over Surface area above 961.50' Excluded Surface area = 0 sf #5 Device 2 961.50'6.0" Vert. Orifice 6" draintile C= 0.600 Limited to weir flow at low heads #6 Discarded 964.00'0.600 in/hr Exfiltration into Rock over Surface area from 960.90' - 961.50' Excluded Surface area = 0 sf Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=964.00' (Free Discharge) 6=Exfiltration into Rock ( Controls 0.00 cfs) Primary OutFlow Max=1.79 cfs @ 12.25 hrs HW=966.17' (Free Discharge) 1=OUTLET PIPE (Passes 0.05 cfs of 1.41 cfs potential flow) 2=RIM- Orifice/Grate (Passes 0.05 cfs of 2.57 cfs potential flow) 5=Orifice 6" draintile (Passes 0.05 cfs of 0.77 cfs potential flow) 4=Exfiltration (Exfiltration Controls 0.05 cfs) 3=EOF (Weir Controls 1.74 cfs @ 1.03 fps) 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 101HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 3P: FILTRATION BASIN 3 Inflow Outflow Discarded Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Inflow Area=0.298 ac Peak Elev=966.17' Storage=2,740 cf 2.42 cfs 1.80 cfs 0.00 cfs 1.80 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 102HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 964.00 527 0 964.01 537 5 964.02 546 11 964.03 556 16 964.04 565 22 964.05 575 28 964.06 584 33 964.07 594 39 964.08 603 45 964.09 613 51 964.10 623 57 964.11 632 64 964.12 642 70 964.13 651 77 964.14 661 83 964.15 670 90 964.16 680 97 964.17 690 103 964.18 699 110 964.19 709 117 964.20 718 125 964.21 728 132 964.22 737 139 964.23 747 146 964.24 756 154 964.25 766 162 964.26 776 169 964.27 785 177 964.28 795 185 964.29 804 193 964.30 814 201 964.31 823 209 964.32 833 218 964.33 842 226 964.34 852 234 964.35 862 243 964.36 871 252 964.37 881 260 964.38 890 269 964.39 900 278 964.40 909 287 964.41 919 296 964.42 929 306 964.43 938 315 964.44 948 324 964.45 957 334 964.46 967 344 964.47 976 353 964.48 986 363 964.49 995 373 964.50 1,005 383 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 964.51 1,015 393 964.52 1,024 403 964.53 1,034 414 964.54 1,043 424 964.55 1,053 434 964.56 1,062 445 964.57 1,072 456 964.58 1,081 466 964.59 1,091 477 964.60 1,101 488 964.61 1,110 499 964.62 1,120 510 964.63 1,129 522 964.64 1,139 533 964.65 1,148 545 964.66 1,158 556 964.67 1,168 568 964.68 1,177 579 964.69 1,187 591 964.70 1,196 603 964.71 1,206 615 964.72 1,215 627 964.73 1,225 639 964.74 1,234 652 964.75 1,244 664 964.76 1,254 677 964.77 1,263 689 964.78 1,273 702 964.79 1,282 715 964.80 1,292 728 964.81 1,301 740 964.82 1,311 754 964.83 1,320 767 964.84 1,330 780 964.85 1,340 793 964.86 1,349 807 964.87 1,359 820 964.88 1,368 834 964.89 1,378 848 964.90 1,387 861 964.91 1,397 875 964.92 1,407 889 964.93 1,416 904 964.94 1,426 918 964.95 1,435 932 964.96 1,445 946 964.97 1,454 961 964.98 1,464 976 964.99 1,473 990 965.00 1,483 1,005 965.01 1,483 1,020 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 103HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 965.02 1,483 1,035 965.03 1,483 1,049 965.04 1,483 1,064 965.05 1,483 1,079 965.06 1,483 1,094 965.07 1,483 1,109 965.08 1,483 1,124 965.09 1,483 1,138 965.10 1,483 1,153 965.11 1,483 1,168 965.12 1,483 1,183 965.13 1,483 1,198 965.14 1,483 1,213 965.15 1,483 1,227 965.16 1,483 1,242 965.17 1,483 1,257 965.18 1,483 1,272 965.19 1,483 1,287 965.20 1,483 1,302 965.21 1,483 1,316 965.22 1,483 1,331 965.23 1,483 1,346 965.24 1,483 1,361 965.25 1,483 1,376 965.26 1,483 1,391 965.27 1,483 1,405 965.28 1,483 1,420 965.29 1,483 1,435 965.30 1,483 1,450 965.31 1,483 1,465 965.32 1,483 1,480 965.33 1,483 1,494 965.34 1,483 1,509 965.35 1,483 1,524 965.36 1,483 1,539 965.37 1,483 1,554 965.38 1,483 1,569 965.39 1,483 1,583 965.40 1,483 1,598 965.41 1,483 1,613 965.42 1,483 1,628 965.43 1,483 1,643 965.44 1,483 1,658 965.45 1,483 1,672 965.46 1,483 1,687 965.47 1,483 1,702 965.48 1,483 1,717 965.49 1,483 1,732 965.50 1,483 1,747 965.51 1,483 1,761 965.52 1,483 1,776 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 965.53 1,483 1,791 965.54 1,483 1,806 965.55 1,483 1,821 965.56 1,483 1,835 965.57 1,483 1,850 965.58 1,483 1,865 965.59 1,483 1,880 965.60 1,483 1,895 965.61 1,483 1,910 965.62 1,483 1,924 965.63 1,483 1,939 965.64 1,483 1,954 965.65 1,483 1,969 965.66 1,483 1,984 965.67 1,483 1,999 965.68 1,483 2,013 965.69 1,483 2,028 965.70 1,483 2,043 965.71 1,483 2,058 965.72 1,483 2,073 965.73 1,483 2,088 965.74 1,483 2,102 965.75 1,483 2,117 965.76 1,483 2,132 965.77 1,483 2,147 965.78 1,483 2,162 965.79 1,483 2,177 965.80 1,483 2,191 965.81 1,483 2,206 965.82 1,483 2,221 965.83 1,483 2,236 965.84 1,483 2,251 965.85 1,483 2,266 965.86 1,483 2,280 965.87 1,483 2,295 965.88 1,483 2,310 965.89 1,483 2,325 965.90 1,483 2,340 965.91 1,483 2,355 965.92 1,483 2,369 965.93 1,483 2,384 965.94 1,483 2,399 965.95 1,483 2,414 965.96 1,483 2,429 965.97 1,483 2,444 965.98 1,483 2,458 965.99 1,483 2,473 966.00 1,483 2,488 966.01 1,483 2,503 966.02 1,483 2,518 966.03 1,483 2,532 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 104HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.04 1,483 2,547 966.05 1,483 2,562 966.06 1,483 2,577 966.07 1,483 2,592 966.08 1,483 2,607 966.09 1,483 2,621 966.10 1,483 2,636 966.11 1,483 2,651 966.12 1,483 2,666 966.13 1,483 2,681 966.14 1,483 2,696 966.15 1,483 2,710 966.16 1,483 2,725 966.17 1,483 2,740 966.18 1,483 2,755 966.19 1,483 2,770 966.20 1,483 2,785 966.21 1,483 2,785 966.22 1,483 2,785 966.23 1,483 2,785 966.24 1,483 2,785 966.25 1,483 2,785 966.26 1,483 2,785 966.27 1,483 2,785 966.28 1,483 2,785 966.29 1,483 2,785 966.30 1,483 2,785 966.31 1,483 2,785 966.32 1,483 2,785 966.33 1,483 2,785 966.34 1,483 2,785 966.35 1,483 2,785 966.36 1,483 2,785 966.37 1,483 2,785 966.38 1,483 2,785 966.39 1,483 2,785 966.40 1,483 2,785 966.41 1,483 2,785 966.42 1,483 2,785 966.43 1,483 2,785 966.44 1,483 2,785 966.45 1,483 2,785 966.46 1,483 2,785 966.47 1,483 2,785 966.48 1,483 2,785 966.49 1,483 2,785 966.50 1,483 2,785 966.51 1,483 2,785 966.52 1,483 2,785 966.53 1,483 2,785 966.54 1,483 2,785 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 966.55 1,483 2,785 966.56 1,483 2,785 966.57 1,483 2,785 966.58 1,483 2,785 966.59 1,483 2,785 966.60 1,483 2,785 966.61 1,483 2,785 966.62 1,483 2,785 966.63 1,483 2,785 966.64 1,483 2,785 966.65 1,483 2,785 966.66 1,483 2,785 966.67 1,483 2,785 966.68 1,483 2,785 966.69 1,483 2,785 966.70 1,483 2,785 966.71 1,483 2,785 966.72 1,483 2,785 966.73 1,483 2,785 966.74 1,483 2,785 966.75 1,483 2,785 966.76 1,483 2,785 966.77 1,483 2,785 966.78 1,483 2,785 966.79 1,483 2,785 966.80 1,483 2,785 966.81 1,483 2,785 966.82 1,483 2,785 966.83 1,483 2,785 966.84 1,483 2,785 966.85 1,483 2,785 966.86 1,483 2,785 966.87 1,483 2,785 966.88 1,483 2,785 966.89 1,483 2,785 966.90 1,483 2,785 966.91 1,483 2,785 966.92 1,483 2,785 966.93 1,483 2,785 966.94 1,483 2,785 966.95 1,483 2,785 966.96 1,483 2,785 966.97 1,483 2,785 966.98 1,483 2,785 966.99 1,483 2,785 967.00 1,483 2,785 967.01 1,483 2,785 967.02 1,483 2,785 967.03 1,483 2,785 967.04 1,483 2,785 967.05 1,483 2,785 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 105HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 3P: FILTRATION BASIN 3 (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 967.06 1,483 2,785 967.07 1,483 2,785 967.08 1,483 2,785 967.09 1,483 2,785 967.10 1,483 2,785 967.11 1,483 2,785 967.12 1,483 2,785 967.13 1,483 2,785 967.14 1,483 2,785 967.15 1,483 2,785 967.16 1,483 2,785 967.17 1,483 2,785 967.18 1,483 2,785 967.19 1,483 2,785 967.20 1,483 2,785 967.21 1,483 2,785 967.22 1,483 2,785 967.23 1,483 2,785 967.24 1,483 2,785 967.25 1,483 2,785 967.26 1,483 2,785 967.27 1,483 2,785 967.28 1,483 2,785 967.29 1,483 2,785 967.30 1,483 2,785 967.31 1,483 2,785 967.32 1,483 2,785 967.33 1,483 2,785 967.34 1,483 2,785 967.35 1,483 2,785 967.36 1,483 2,785 967.37 1,483 2,785 967.38 1,483 2,785 967.39 1,483 2,785 967.40 1,483 2,785 967.41 1,483 2,785 967.42 1,483 2,785 967.43 1,483 2,785 967.44 1,483 2,785 967.45 1,483 2,785 967.46 1,483 2,785 967.47 1,483 2,785 967.48 1,483 2,785 967.49 1,483 2,785 967.50 1,483 2,785 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 106HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Summary for Pond 4P: WETLAND A [44] Hint: Outlet device #2 is below defined storage Inflow Area = 3.209 ac, 14.54% Impervious, Inflow Depth = 5.17" for 100y 24hr AT-14 event Inflow = 24.75 cfs @ 12.18 hrs, Volume= 1.383 af Outflow = 15.36 cfs @ 12.29 hrs, Volume= 1.383 af, Atten= 38%, Lag= 6.5 min Primary = 15.36 cfs @ 12.29 hrs, Volume= 1.383 af Routed to Reach DA 1 : DRAINAGE AREA 1- TOTAL TO WETLAND A Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 970.88' @ 12.29 hrs Surf.Area= 17,286 sf Storage= 17,378 cf Plug-Flow detention time= 66.3 min calculated for 1.383 af (100% of inflow) Center-of-Mass det. time= 66.4 min ( 872.2 - 805.8 ) Volume Invert Avail.Storage Storage Description #1 969.62' 19,559 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 969.62 11,466 0 0 970.00 12,137 4,485 4,485 971.00 18,012 15,075 19,559 Device Routing Invert Outlet Devices #1 Primary 965.00'6.0" Round OUTLET PIPE- Culvert L= 29.0' CMP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 965.00' / 963.50' S= 0.0517 '/' Cc= 0.900 n= 0.011 Concrete pipe, straight & clean, Flow Area= 0.20 sf #2 Device 1 969.60'24.0" Vert. Orifice/Grate C= 0.600 Limited to weir flow at low heads #3 Primary 970.25'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=15.36 cfs @ 12.29 hrs HW=970.88' (Free Discharge) 1=OUTLET PIPE- Culvert (Inlet Controls 1.98 cfs @ 10.08 fps) 2=Orifice/Grate (Passes 1.98 cfs of 8.14 cfs potential flow) 3=Broad-Crested Rectangular Weir (Weir Controls 13.38 cfs @ 2.14 fps) 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 107HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Pond 4P: WETLAND A Inflow Primary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=3.209 ac Peak Elev=970.88' Storage=17,378 cf 24.75 cfs 15.36 cfs 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 108HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: WETLAND A Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 969.62 11,466 0 969.63 11,484 115 969.64 11,501 230 969.65 11,519 345 969.66 11,537 460 969.67 11,554 576 969.68 11,572 691 969.69 11,590 807 969.70 11,607 923 969.71 11,625 1,039 969.72 11,643 1,155 969.73 11,660 1,272 969.74 11,678 1,389 969.75 11,696 1,506 969.76 11,713 1,623 969.77 11,731 1,740 969.78 11,749 1,857 969.79 11,766 1,975 969.80 11,784 2,092 969.81 11,802 2,210 969.82 11,819 2,329 969.83 11,837 2,447 969.84 11,854 2,565 969.85 11,872 2,684 969.86 11,890 2,803 969.87 11,907 2,922 969.88 11,925 3,041 969.89 11,943 3,160 969.90 11,960 3,280 969.91 11,978 3,399 969.92 11,996 3,519 969.93 12,013 3,639 969.94 12,031 3,760 969.95 12,049 3,880 969.96 12,066 4,001 969.97 12,084 4,121 969.98 12,102 4,242 969.99 12,119 4,363 970.00 12,137 4,485 970.01 12,196 4,606 970.02 12,254 4,728 970.03 12,313 4,851 970.04 12,372 4,975 970.05 12,431 5,099 970.06 12,490 5,223 970.07 12,548 5,349 970.08 12,607 5,474 970.09 12,666 5,601 970.10 12,725 5,728 970.11 12,783 5,855 970.12 12,842 5,983 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.13 12,901 6,112 970.14 12,959 6,241 970.15 13,018 6,371 970.16 13,077 6,502 970.17 13,136 6,633 970.18 13,194 6,764 970.19 13,253 6,897 970.20 13,312 7,029 970.21 13,371 7,163 970.22 13,430 7,297 970.23 13,488 7,431 970.24 13,547 7,567 970.25 13,606 7,702 970.26 13,664 7,839 970.27 13,723 7,976 970.28 13,782 8,113 970.29 13,841 8,251 970.30 13,899 8,390 970.31 13,958 8,529 970.32 14,017 8,669 970.33 14,076 8,810 970.34 14,135 8,951 970.35 14,193 9,092 970.36 14,252 9,235 970.37 14,311 9,377 970.38 14,369 9,521 970.39 14,428 9,665 970.40 14,487 9,809 970.41 14,546 9,955 970.42 14,604 10,100 970.43 14,663 10,247 970.44 14,722 10,394 970.45 14,781 10,541 970.46 14,840 10,689 970.47 14,898 10,838 970.48 14,957 10,987 970.49 15,016 11,137 970.50 15,075 11,287 970.51 15,133 11,438 970.52 15,192 11,590 970.53 15,251 11,742 970.54 15,309 11,895 970.55 15,368 12,049 970.56 15,427 12,202 970.57 15,486 12,357 970.58 15,545 12,512 970.59 15,603 12,668 970.60 15,662 12,824 970.61 15,721 12,981 970.62 15,780 13,139 970.63 15,838 13,297 21429- CHANHASSEN LOT SPLIT - PROPOSED MSE 24-hr 3 100y 24hr AT-14 Rainfall=7.36"21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} Page 109HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: WETLAND A (continued) Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 970.64 15,897 13,455 970.65 15,956 13,615 970.66 16,014 13,775 970.67 16,073 13,935 970.68 16,132 14,096 970.69 16,191 14,258 970.70 16,250 14,420 970.71 16,308 14,583 970.72 16,367 14,746 970.73 16,426 14,910 970.74 16,485 15,075 970.75 16,543 15,240 970.76 16,602 15,405 970.77 16,661 15,572 970.78 16,719 15,739 970.79 16,778 15,906 970.80 16,837 16,074 970.81 16,896 16,243 970.82 16,955 16,412 970.83 17,013 16,582 970.84 17,072 16,752 970.85 17,131 16,923 970.86 17,190 17,095 970.87 17,248 17,267 970.88 17,307 17,440 970.89 17,366 17,613 970.90 17,424 17,787 970.91 17,483 17,962 970.92 17,542 18,137 970.93 17,601 18,313 970.94 17,660 18,489 970.95 17,718 18,666 970.96 17,777 18,843 970.97 17,836 19,021 970.98 17,895 19,200 970.99 17,953 19,379 971.00 18,012 19,559 971.01 18,012 19,559 971.02 18,012 19,559 971.03 18,012 19,559 971.04 18,012 19,559 971.05 18,012 19,559 971.06 18,012 19,559 971.07 18,012 19,559 971.08 18,012 19,559 971.09 18,012 19,559 971.10 18,012 19,559 971.11 18,012 19,559 971.12 18,012 19,559 971.13 18,012 19,559 971.14 18,012 19,559 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 971.15 18,012 19,559 971.16 18,012 19,559 971.17 18,012 19,559 971.18 18,012 19,559 971.19 18,012 19,559 971.20 18,012 19,559 971.21 18,012 19,559 971.22 18,012 19,559 971.23 18,012 19,559 971.24 18,012 19,559 971.25 18,012 19,559 971.26 18,012 19,559 971.27 18,012 19,559 971.28 18,012 19,559 971.29 18,012 19,559 971.30 18,012 19,559 971.31 18,012 19,559 971.32 18,012 19,559 971.33 18,012 19,559 971.34 18,012 19,559 971.35 18,012 19,559 971.36 18,012 19,559 971.37 18,012 19,559 971.38 18,012 19,559 971.39 18,012 19,559 971.40 18,012 19,559 971.41 18,012 19,559 971.42 18,012 19,559 971.43 18,012 19,559 971.44 18,012 19,559 971.45 18,012 19,559 971.46 18,012 19,559 971.47 18,012 19,559 971.48 18,012 19,559 971.49 18,012 19,559 971.50 18,012 19,559 971.51 18,012 19,559 971.52 18,012 19,559 971.53 18,012 19,559 971.54 18,012 19,559 971.55 18,012 19,559 971.56 18,012 19,559 971.57 18,012 19,559 971.58 18,012 19,559 971.59 18,012 19,559 971.60 18,012 19,559 21429- CHANHASSEN LOT SPLIT - PROPOSED Table of Contents21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC TABLE OF CONTENTS Project Reports 1 Routing Diagram 2 Rainfall Events Listing 3 Area Listing (all nodes) 4 Soil Listing (all nodes) 5 Ground Covers (all nodes) 7 Pipe Listing (all nodes) 2y 24hr AT-14 Event 8 Node Listing 9 Subcat OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND 10 Subcat OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B 11 Subcat PR1A: PR1A - DRAINS EAST ALONG STREET 12 Subcat PR1B: PR1B - DRAINS SOUTH TO WETLAND A 13 Subcat PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN 14 Subcat PR2A: PR2C - DRAINS SOUTH TO WETLAND B 15 Subcat PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN 16 Subcat PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN 17 Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A 18 Reach DA 2: DA 2- TOTAL EX 2 19 Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 20 Pond 1P: FILTRATION BASIN 1 25 Pond 2P: FILTRATION BASIN 2 32 Pond 3P: FILTRATION BASIN 3 38 Pond 4P: WETLAND A 10y 24hr AT-14 Event 42 Node Listing 43 Subcat OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND 44 Subcat OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B 45 Subcat PR1A: PR1A - DRAINS EAST ALONG STREET 46 Subcat PR1B: PR1B - DRAINS SOUTH TO WETLAND A 47 Subcat PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN 48 Subcat PR2A: PR2C - DRAINS SOUTH TO WETLAND B 49 Subcat PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN 50 Subcat PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN 51 Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A 52 Reach DA 2: DA 2- TOTAL EX 2 53 Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 54 Pond 1P: FILTRATION BASIN 1 59 Pond 2P: FILTRATION BASIN 2 66 Pond 3P: FILTRATION BASIN 3 72 Pond 4P: WETLAND A 21429- CHANHASSEN LOT SPLIT - PROPOSED Table of Contents21429- PROPOSED Printed 2/17/2022Prepared by {enter your company name here} HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC 100y 24hr AT-14 Event 76 Node Listing 77 Subcat OFFSITE B: OFFSITE B - DRAINS SOUTH TO WETLAND 78 Subcat OUTSITE A: OFFSITE A - DRAINS SOUTH TO WETLAND B 79 Subcat PR1A: PR1A - DRAINS EAST ALONG STREET 80 Subcat PR1B: PR1B - DRAINS SOUTH TO WETLAND A 81 Subcat PR1C: PR1C - DRAINS SOUTH TO RAIN GARDEN 82 Subcat PR2A: PR2C - DRAINS SOUTH TO WETLAND B 83 Subcat PR2B: PR2B - DRAINS SOUTH TO RAIN GARDEN 84 Subcat PR2C: PR2C - DRAINS SOUTH TO RAIN GARDEN 85 Reach DA 1: DRAINAGE AREA 1- TOTAL TO WETLAND A 86 Reach DA 2: DA 2- TOTAL EX 2 87 Reach DA 3: PROPOSED DRAINAGE AREA 3 - TOTAL FLOW TO WETLAND B 88 Pond 1P: FILTRATION BASIN 1 93 Pond 2P: FILTRATION BASIN 2 100 Pond 3P: FILTRATION BASIN 3 106 Pond 4P: WETLAND A Civil Site Group - Stormwater Calculations Area [SF] CN Value Area [SF] CN Value Area [SF] CN Value EX1A 3245 98 0 80 3245 98 EX1B 7290 98 55517 80 62807 82 EX1C 0 98 3209 81 3209 81 WETLAND A 0 99 9788 80 9788 80 OFFSITE A 8875 98 40698 80 49573 83 OFFSITE B 6076 98 68789 80 74865 81 EX2 2278 98 26521 80 28799 81 Area [SF] CN Value Area [SF] CN Value Area [SF] CN Value PR1A 3245 98 0 80 3245 98 PR1B 7290 98 23142 80 30432 84 PR1C 6962 98 27526 80 34488 84 WETLAND A 0 99 9788 80 9788 80 OFFSITE A 8875 98 40698 80 49573 83 OFFSITE B 6076 98 68789 80 74865 81 PR2A 0 98 6877 80 6877 80 PR2B 3006 98 6964 80 9970 85 PR2C 3481 98 9481 80 12962 85 Impervious [SF] Impervious [AC] Pervious [SF] Pervious [AC] Total [SF] Total [AC] Existing Site 12813 0.29 95035 2.18 107848 2.48 Existing Site & Offsite 27764 0.64 204522 4.70 232286 5.33 Proposed Site 23984 0.55 83778 1.92 107762 2.47 Proposed Site & Offsite 38935 0.89 193265 4.44 232200 5.33 Existing Rate (cfs) 2-YR [2.94"] 10-YR [4.47"] 100-YR [7.81"] EX1 0.28 0.40 0.70 DA1 5.81 11.67 26.30 EX2 1.33 2.42 5.15 DA3- TOTAL 6.73 13.49 30.43 Existing Rate (cfs) 2-YR [2.94"]10-YR [4.47"]100-YR [7.81"] PR1A 0.28 0.40 0.70 DA1 1.31 3.22 15.36 DA2 0.00 0.05 1.80 DA3- TOTAL 3.40 6.72 24.27 Overall Stormwater Rate Summary 2-Year Event 6.73 3.40 10-Year Event 13.49 6.72 100-Year Event 30.43 24.27 Stormwater Rate Summary - To East Along Lucy Lake Road 2-Year Event 0.28 0.28 10-Year Event 0.40 0.40 100-Year Event 0.70 0.70 Stormwater Rate Summary - To Wetland A 2-Year Event 5.81 1.31 10-Year Event 11.67 3.22 100-Year Event 26.30 15.36 Stormwater Rate Summary - To Wetland B 2-Year Event 1.33 0.00 10-Year Event 2.42 0.05 100-Year Event 5.15 1.80 Stormwater Water Quality Summary New Impv. Area (sf) Required Volume (cf) PR1A 3245 270 PR1B 7290 608 PR1C 6962 580 PR2A 0 0 PR2B 3006 251 PR2C 3481 290 TOTAL 23984 1999 Inf. Area (sf) Assoc. Inf. Height (ft) Drawdown Time (h) Filtration Basin 1 1864 1701 1.10 8.22 Filtration Basin 2 3168 521 6.08 45.60 Filtration Basin 3 1747 527 3.31 24.86 TOTAL 6779 Pollutant Existing Loading Proposed Loading Removal Efficiency TSS 476.8 440.2 91.2 TP 4.5 5.9 63.1 Stormwater Volume Summary New Impv. Area (sf) Required Volume (cf) PR1A 3245 149 PR1B 7290 334 PR1C 6962 319 PR2A 0 0 PR2B 3006 138 PR2C 3481 160 TOTAL 23984 1099 Inf. Area (sf) Assoc. Inf. Height (ft) Drawdown Time (h) Filtration Basin 1 408 1701 0.24 48.00 Filtration Basin 2 125 521 0.24 48.00 Filtration Basin 3 126 527 0.24 48.00 TOTAL 660 Proposed BMP Area Provided Vol (cf)Drawdown Time Calculations (1.6"/Hour) Drainage Area Required Infiltration Vol. Summary Filtration Volume = 1.0"*Dist. Impv. Area Proposed BMP Area Provided Vol (cf) Existing Conditions Rate (cfs) Proposed Conditions Rate (cfs) Drawdown Time Calculations (0.06"/Hour) Required Infiltration Vol. Summary Infiltration Volume = 0.55"*Dist. Impv. Area Existing Conditions Rate (cfs) Proposed Conditions Rate (cfs) Drainage Area Existing Conditions Rate (cfs) Proposed Conditions Rate (cfs) Drainage Area Drainage Area Stormwater Rate Summary Existing Conditions Rate (cfs) Proposed Conditions Rate (cfs) Site Area Summary 1441 Lucy Lake Road Pervious Area Total Area Existing Conditions Proposed Conditions Drainage Area Impervious Area Total AreaImpervious AreaDrainage Area Pervious Area Civil Site Group, PC 5000 Glenwood Avenue Golden Valley Minnesota 55422 www.CivilSiteGroup.com (612) 615-0060 Existing P8 Loading Civil Site Group, PC 5000 Glenwood Avenue Golden Valley Minnesota 55422 www.CivilSiteGroup.com (612) 615-0060 Proposed P8 Loading Civil Site Group, PC 5000 Glenwood Avenue Golden Valley Minnesota 55422 www.CivilSiteGroup.com (612) 615-0060 Removal Efficiency P8 Loading S00°10'43"W 1131.8 +/-N00°10'43"E 1220.1 +/-1161.341081.20[12][13 ] Sewe r Easemen t pe rDoc. Nos . 244417 & 244418[13] Turnaround EasementPer Doc. No. 2444188" PVC8" PVCExisting HouseExisting HouseDeck12" RCP[13] Temporary Easementper Doc. No. 244418Upper Level Deckw/ Walkout Beneath32LOT 2BLOC K 1 SB-1 SB-4 SB-2 SB-3 1:30 DRAFTSubject to RevisionSilty Clayey Sand, trace Roots, black, frozen. (Topsoil) (CL) Sandy Lean Clay, trace Gravel, brown and gray, wet, rather stiff to very stiff. (Glacial Till) (CL) Sandy Lean Clay, trace Gravel, gray, wet, rather stiff. (Glacial Till) Bottom of borehole at 14.5 feet. AU 5 SS 6 SS 7 SS 8 5-5-6 (11) 5-7-10 (17) 3-4-7 (11) NOTES GROUND ELEVATION LOGGED BY DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 2/15/22 COMPLETED 2/15/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0.0 2.5 5.0 7.5 10.0 12.5 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-1 CLIENT Gayle Morin PROJECT NUMBER 21-1312 PROJECT NAME 1441 Lake Lucy Road PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 2/16/22 14:48 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\GINT PROJECT BACKUP\PROJECTS\21-1312 1441 LAKE LUCY ROAD.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238 DRAFTSubject to RevisionSilty Clayey Sand, trace Roots, black, frozen. (Topsoil) (CL) Sandy Lean Clay, trace Gravel, brown and gray, wet, rather stiff to very stiff. (Glacial Till) Sand Seam at about 10 feet (CL) Sandy lean Clay, trace Gravel, gray, wet, stiff. (Glacial Till) Bottom of borehole at 14.5 feet. AU 1 SS 2 SS 3 SS 4 4-4-5 (9) 40-15-5 (20) 3-5-8 (13) NOTES GROUND ELEVATION LOGGED BY DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 2/15/22 COMPLETED 2/15/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0.0 2.5 5.0 7.5 10.0 12.5 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-2 CLIENT Gayle Morin PROJECT NUMBER 21-1312 PROJECT NAME 1441 Lake Lucy Road PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 2/16/22 14:48 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\GINT PROJECT BACKUP\PROJECTS\21-1312 1441 LAKE LUCY ROAD.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238 DRAFTSubject to RevisionSilty Clay, trace Roots, black, wet. (Topsoil) (SC) Clayey Sand, fine grained, gray and brown, wet, loose. (Glacial Till) (CL) Sandy Lean Clay, trace Gravel, brown and gray, wet, rather stiff. (Glacial Till) (CL) Sandy Lean Clay, trace Gravel, gray, wet, rather stiff. (Glacial Till) Bottom of borehole at 14.5 feet. AU 13 SS 14 SS 15 SS 16 3-3-3 (6) 3-4-2 (6) 3-5-7 (12) NOTES GROUND ELEVATION LOGGED BY DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 2/15/22 COMPLETED 2/15/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0.0 2.5 5.0 7.5 10.0 12.5 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-3 CLIENT Gayle Morin PROJECT NUMBER 21-1312 PROJECT NAME 1441 Lake Lucy Road PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 2/16/22 14:48 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\GINT PROJECT BACKUP\PROJECTS\21-1312 1441 LAKE LUCY ROAD.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238 DRAFTSubject to RevisionSandy Lean Clay, trace Roots, dark brown, wet. (Topsoil) (CL) Sandy Lean Clay, trace Gravel, brown and gray, wet, very stiff. (Glacial Till) (CL) Sandy Lean Clay, trace Gravel, gray, wet, stiff. (Glacial Till) Bottom of borehole at 14.5 feet. AU 9 SS 10 SS 11 SS 12 4-9-10 (19) 6-9-13 (22) 3-5-8 (13) NOTES GROUND ELEVATION LOGGED BY DRILLING METHOD Hollow Stem Auger/Split Spoon DRILLING CONTRACTOR HGTS GROUND WATER LEVELS: CHECKED BY PG DATE STARTED 2/15/22 COMPLETED 2/15/22 AT TIME OF DRILLING --- Not Encountered AT END OF DRILLING --- Not Encountered AFTER DRILLING --- Not Encountered HOLE SIZE 3 1/4 inches FINES CONTENT (%) 20 40 60 80 20 40 60 80 PL LLMC DEPTH(ft)0.0 2.5 5.0 7.5 10.0 12.5 GRAPHICLOGMATERIAL DESCRIPTION SAMPLE TYPENUMBERRECOVERY %(RQD)BLOWCOUNTS(N VALUE) SPT N VALUE 20 40 60 80 MOISTURE CONT.(%)NOTESPAGE 1 OF 1 BORING NUMBER SB-4 CLIENT Gayle Morin PROJECT NUMBER 21-1312 PROJECT NAME 1441 Lake Lucy Road PROJECT LOCATION Chanhassen, MN GEOTECH BH PLOTS - GINT STD US LAB.GDT - 2/16/22 14:48 - C:\USERS\HGTS 3\DROPBOX (HGTS)\HAUGO GEOTECHNICAL SERVICES\GINT PROJECT BACKUP\PROJECTS\21-1312 1441 LAKE LUCY ROAD.GPJHaugo GeoTechnical Services 2825 Cedar Ave South Minneapolis, MN 55407 Telephone: 612-729-2959 Fax: 763-445-2238