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plan set - Preliminary 5-17-13_Page_09q 2' 65' 0.5" TOPSOIL rVARIES 3.0' GRADING GRADE PROPOSED FINISHED GRADE EXISTING GRADE SELECT BACKFILL) LIMIT OF SUBGRADE EXCAVATION MATERIAL "vll!II SELECT BACKFILL IL I�-'' MATERIAL ,�' I'DEFK\P COMPACTED BACKFILL RCAF uN5 M cRF NON- SELECT 9 X, NON- SELECT BACKFILL MATERIAL MAX. � BACKFILL MATERIAL 3,0' COMPACTED BACKFILL MAX to. o' COMPACTED BACKFILL 't�"�7' '�° 1r MIN. MIN. BOTTOM OF UNSTAB E MATERtoo' IAL SUBGRADE CORRECTION DETAIL NO SCALE PI2NEERengineering CIVILENGINEERS LANDPLANNERS LANDSURVEYORS LANDSCAPEARCH== 2422 Enterprise Drive (651) 681 -1914 Mendota Heights, MN 55120 Fax: 681 -9488 www.pione reng.com ©2 13 Pioneer Engineering DRAINAGE & UTILIT' EASEMENT LOWEST OPENING ELEVATION LOWEST FLOOR ELEVATION GROUND ELEVATION @ BUILDING RECOMMENDED GARAGE SIDE FINISHED ELEVATION @ LOT CORNER W z 7 0 -1 LOT PROFILE STREET PROFILE 29.0 I. 3' TYPICAL POND SECTION 3 1 60' BLOCK NO. 25' 1 35' R 0:1 10:1 "31.0 w, SETBACK z' (MIN.) NWL TYPES 7E'R 3 R RAMBLER OR SPLIT ENTRY F =928.0 w z SETBACK (MIN.) LO RAMBLER LOOKOUT OR SPLIT P' RLM Single Family Lots 10' ENTRY WALKOUT FINISHED BOTTOM (MIN.) MNDOT CATAGORY 2 GRADING GRADE LO EROSION CONTROL BLANKET VARIES SIDE LOOKOUT ON DITCH SLOPES & BERM o�' q 2' 65' 0.5" TOPSOIL rVARIES 3.0' GRADING GRADE PROPOSED FINISHED GRADE EXISTING GRADE SELECT BACKFILL) LIMIT OF SUBGRADE EXCAVATION MATERIAL "vll!II SELECT BACKFILL IL I�-'' MATERIAL ,�' I'DEFK\P COMPACTED BACKFILL RCAF uN5 M cRF NON- SELECT 9 X, NON- SELECT BACKFILL MATERIAL MAX. � BACKFILL MATERIAL 3,0' COMPACTED BACKFILL MAX to. o' COMPACTED BACKFILL 't�"�7' '�° 1r MIN. MIN. BOTTOM OF UNSTAB E MATERtoo' IAL SUBGRADE CORRECTION DETAIL NO SCALE PI2NEERengineering CIVILENGINEERS LANDPLANNERS LANDSURVEYORS LANDSCAPEARCH== 2422 Enterprise Drive (651) 681 -1914 Mendota Heights, MN 55120 Fax: 681 -9488 www.pione reng.com ©2 13 Pioneer Engineering DRAINAGE & UTILIT' EASEMENT LOWEST OPENING ELEVATION LOWEST FLOOR ELEVATION GROUND ELEVATION @ BUILDING RECOMMENDED GARAGE SIDE FINISHED ELEVATION @ LOT CORNER W z 7 0 -1 LOT PROFILE STREET PROFILE 29.0 - 28.0 III O 25 ' 60' BLOCK NO. 25' 7 35' R LOT NO. "31.0 w, SETBACK z' (MIN.) HOUSE TYPES R R RAMBLER OR SPLIT ENTRY F =928.0 w z SETBACK (MIN.) LO RAMBLER LOOKOUT OR SPLIT RLM Single Family Lots SINGLE ENTRY WALKOUT FINISHED GRA DE (MIN.) WO RAMBLER WALKOUT GRADING GRADE LO SLO SIDE LOOKOUT Front: o�' SWO SIDE WALKOUT G 937.0 �I R L Lo CE STREET LOT INFORMATION (TYPICAL SECTION NOT TO SCALE) W z 7 0 J x rr ��5' 5' ON E 0. � LOT BENCHING DETAIL NO SCALE W z 7 0 -1 PHASE SEQUENCE 1. THE SIZE OF EACH FILL OPERATION WALL BE DETERMINED BY THE QUANTITY OF SOIL IMPORT. 2. EACH PHASE WALL CONSIST OF THE GRADING SEQUENCE OUTLINED BELOW. GRADING SEQUENCE 1. DETERMINE SIZE OF FILL AREA BASED ON AVAILABLE SOIL 2. INSTALL ROCK CONSTRUCTION ENTRANCE 3. INSTALL PERIMETER SEDIMENT CONTROL DEVICES (SILT FENCE). 4. STRIP TOPSOIL, STOCKPILE AND STABILIZE IN BERM FOR FUTURE SPREADING. 5. DIG TEMPORARY SEDIMENT BASIN, BASIN TO BE 1800 CF /ACRE OF AREA STRIPPED. CLEAN TEMP BASIN ONCE 50X FULL. 6. ALL SOIL WILL BE TESTED FOR SUITABILITY FOR FILL PER THE BORROW PIT RECLAMATION PROTOCOL PRIOR TO BEING BROUGHT ONSITE. 7. ALL SOILS WILL BE COMPACTED PER THE BORROW PIT RECLAMATION PROTOCOL. 8. MAINTAIN DRAINAGE DURING GRADING OPERATION TO TEMPORARY SEDIMENT BASIN. 9. COMPLETE SITE GRADING PER PLAN. 10. RESPREAD TOPSOIL MAINTAIN A MINIMUM OF 4" DEPTH. 11. MAINTAIN DRAINAGE TO TEMP SEDIMENT BASIN UNTIL NEXT PHASE BEGINS. 12. STABILIZE DENUDED AREAS AND STOCKPILES WITHIN TIME FRAME LISTED IN EROSION PREVENTION PRACTICES GENERAL NOTES 1. CONTRACTOR TO ADHERE TO ALL REQUIREMENTS OF THE MINNESOTA POLLUTION CONTROL AGENCY N.P.D.E.S. PERMIT, INCLUDING THE REQUIREMENT TO MINIMIZE THE AREA DISTURBED BY GRADING AT ANY GIVEN TIME AND TO COMPLETE TURF RESTORATION THE TIME REQUIRED BY THE PERMIT AFTER COMPLETION OF 2. A COPY OF THESE PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 3. BMP'S REFER TO EROSION AND SEDIMENT CONTROL PRACTICES DEFINED IN THE MPCA PROTECTING WATER QUALITY IN URBAN AREAS AND THE MINNESOTA CONSTRUCTION SITE EROSION AND SEDIMENT CONTROL PLANNING HANDBOOK. 4. ALL EROSION AND SEDIMENT CONTROL FACILITIES (BMP'S) SHALL BE INSTALLED AND IN OPERATION PRIOR TO LAND DISTURBANCE ACTIVITIES. SOME EROSION CONTROLS SUCH AS CHECK DAMS AND TEMPORARY SILT PONDS MAY BE INSTALLED AS GRADING OCCURS IN THE SPECIFIC AREA. THEY SHALL BE MAINTAINED UNTIL CONSTRUCTION IS COMPLETED AND THE POTENTIAL FOR EROSION HAS PASSED. 5. THE BMP'S SHOWN ON THE PLANS ARE THE MINIMUM REQUIREMENTS FOR THE ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITTEE SHALL ANTICIPATE THAT MORE BMP'S WILL BE NECESSARY TO ENSURE EROSION AND SEDIMENT CONTROL ON THE SITE. DURING THE COURSE OF CONSTRUCTION, IT IS THE RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY CONSTRUCTION ACTIVITIES AND /OR CLIMATIC EVENTS AND TO PROVIDE ADDITIONAL BMP'S OVER AND ABOVE THE MINIMUM REQUIREMENTS SHOWN ON THE PLANS THAT MAY BE NEEDED TO PROVIDE EFFECTIVE PROTECTION OF WATER AND SOIL RESOURCES. 6. ALL TREES NOT LISTED FOR REMOVAL SHALL BE PROTECTED. DO NOT OPERATE EQUIPMENT WITHIN THE DRIP LINE, ROOT ZONES OR WITHIN TREE PROTECTION FENCE AREAS. 7. WHEREVER POSSIBLE, PRESERVE THE EXISTING TREES, GRASS AND OTHER VEGETATIVE COVER TO HELP FILTER RUNOFF. 8. OPERATE TRACK EQUIPMENT (DOZER) UP AND DOWN EXPOSED SOIL SLOPES ON FINAL PASS, LEAVING TRACK GROOVES PERPENDICULAR TO THE SLOPE. DO NOT BACK- BLADE. LEAVE A SURFACE ROUGH TO MINIMIZE EROSION. 9. TEMPORARY SEED SHALL BE DONE IN ACCORDANCE TO MNDOT 2575 & 387,; CONSISTING OF: • MNDOT MIX 150 O 40 LBS. PER ACRE OR APPROVED EQUAL. • MULCH SHALL BE MNDOT TYPE 3 O 2 TONS PER ACRE OR APPROVED EQUAL AND DISK ANCHORED IN PLACE OR APPROVED EQUAL, INSTALLED TO MINIMUM 9OX COVERAGE OF THE SURFACE AREA DISTURBED. • TYPE 1 FERTILIZER, 1D -10 -20 O 200 LBS. PER ACRE 10. PERMANENT TURF RESTORATION SHALL BE DONE IN ACCORDANCE WITH MNDOT 2575 & 3876 CONSISTING OF: • MNDOT MIXTURE 240 AT 75 POUNDS PER ACRE. • MULCH SHALL BE MNDOT TYPE 3 O 2 TONS PER ACRE OR APPROVED EQUAL AND DISK ANCHORED IN PLACE OR APPROVED EQUAL, INSTALLED TO MINIMUM 90X COVERAGE OF THE SURFACE AREA DISTURBED.MULCH AT 90 X COVERAGE WITH DISC ANCHOR. • TYPE 3 FERTILIZER, 22 -5 -10 BOXW.I.N O 350 LBS PER ACRE. 11. SLOPES AT 3:1 OR STEEPER, AND /OR WHERE INDICATED ON THE PLANS SHALL BE SEEDED AND HAVE AN EROSION CONTROL BLANKET TYPE 3 INSTALLED OR MAY BE HYDROSEEDED WITH TACKIFER MULCH. 12. THE CONTRACTOR SHALL REMOVE ALL SOILS AND SEDIMENT TRACKED ONTO EXISTING STREETS AND PAVED AREAS. 13. IF BLOWING DUST BECOMES A NUISANCE. THE CONTRACTOR SHALL APPLY WATER FROM A TANK TRUCK TO ALL CONSTRUCTION AREAS. 14. WITHIN 7 DAYS OF COMPLETION OF THE SITE GRADING OPERATIONS THE ENTIRE SITE (EXCEPT ROADWAYS) SHALL HAVE BEEN SEEDED AND MULCHED AND SILT FENCE SHALL INSTALLED AROUND ALL PONDS. 15. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE PROPERLY DISPOSED OF WITHIN THIRTY (30) DAYS AFTER FINAL SITE STABILIZATION IS ACHIEVED OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED. CONSTRUCTION ACTIVITY REQUIREMENTS A. EROSION PREVENTION PRACTICES 1. THE CONTRACTOR SHALL IMPLEMENT CONSTRUCTION PHASING, VEGETATIVE BUFFER STRIPS, HORIZONTAL SLOPE GRADING, AND OTHER CONSTRUCTION PRACTICES THAT MINIMIZE EROSION. THE LOCATION OF AREAS NOT TO BE DISTURBED MUST BE DELINEATED (E.G. WITH FLAGS, STAKES, SIGNS, SILT FENCE, ETC.) ON THE DEVELOPMENT SITE BEFORE WORK BEGINS. 2. ALL EXPOSED SOIL AREAS WITHIN 200 FEET OF A SURFACE WATER OR ANY STORMWATER CONVEYANCE SYSTEM WHICH IS CONNECTED TO A SURFACE WATER MUST BE STABILIZED WITHIN 7 DAYS (STEEPER THAN 3:1 SLOPES), 14- DAYS (10:1 TO 3:1 SLOPES), OR 21 DAYS (FLATTER THAN 10:1). THESE AREAS INCLUDE POND SIDE SLOPES, EXPOSED SOIL AREAS WITH A POSITIVE SLOPE TO A CURB AND GUTTER SYSTEM, STORM SEWER INLET, DRAINAGE DITCH, OR OTHER SYSTEM THAT DISCHARGES TO A SURFACE WATER. 3. THE NORMAL WETTED PERIMETER OF ANY DRAINAGE DITCH MUST BE STABILIZED WITHIN 200 LINEAL FEET FROM THE PROPERTY EDGE, OR FROM THE POINT OF DISCHARGE TO ANY SURFACE WATER (WITHIN 24 HOURS OF CONNECTING TO A SURFACE WATER). 4. PIPE OUTLETS MUST BE PROVIDED WITH TEMPORARY. OR PERMANENT ENERGY DISSIPATION WITHIN 24 HOURS OF CONNECTION TO A SURFACE WATER. B. SEDIMENT CONTROL PRACTICES 1. SEDIMENT CONTROL PRACTICES MUST MINIMIZE SEDIMENT ENTERING SURFACE WATERS. DITCHES AND SEDIMENT BASINS REQUIRE SEDIMENT CONTROL PRACTICES ONLY AS APPROPRIATE FOR SITE CONDITIONS. IF DOWN GRADE SYSTEM IS OVERLOADED, ADDITIONAL UPGRADE PRACTICES MUST BE INSTALLED, AND THE SWPPP MUST BE AMENDED. THERE SHALL BE NO UNBROKEN SLOPE LENGTH OF GREATER THAN 75 FEET FOR SLOPES WITH A GRADE OF 3:1 OR STEEPER. SLOPES MAY BE BROKEN WITH SILT FENCE, ROCK CHECK DAMS, COMPOST SNAKES, OR OTHER APPROVED METHODS AND /OR AS SHOWN ON THE EROSION CONTROL PLAN. 2. SEDIMENT CONTROL PRACTICES MUST BE ESTABLISHED ON DOWNGRADE PERIMETERS BEFORE UPGRADE LAND DISTURBING ACTIVITIES BEGIN. 3. THE TIMING OF SEDIMENT CONTROL PRACTICES MAY BE ADJUSTED TO ACCOMMODATE SHORT TERM ACTIVITIES. HOWEVER, THESE PRACTICES MUST BE INSTALLED BEFORE THE NEXT PRECIPITATION EVENT EVEN IF THE ACTIVITY IS NOT COMPLETE. 4. CONTRACTOR MUST PROTECT ALL STORM DRAIN INLETS BY APPROPRIATE BMP'S DURING CONSTRUCTION UNTIL ALL SOURCES WITH POTENTIAL FOR DISCHARGING TO THE INLET HAVE BEEN STABILIZED. 5. TEMPORARY STOCKPILES MUST HAVE SILT FENCE AROUND THE PERIMETER OF THE BASE OF THE STOCKPILE AND CANNOT BE PLACED IN SURFACE WATERS, INCLUDING STORM WATER CONVEYANCES SUCH AS CURB AND GUTTER SYSTEMS, OR CONDUITS OR DITCHES. 6. CONTRACTOR MUST INSTALL TEMPORARY (OR PERMANENT) SEDIMENTATION BASINS WHERE TEN OR MORE ACRES OF DISTURBED SOIL DRAIN TO A COMMON LOCATION AND /OR AS SHOWN ON THE EROSION CONTROL PLAN. C. DEWATERING AND SURFACE DRAINAGE 1. DEWATERING OR ANY TYPE OF SURFACE DRAINAGE THAT MAY HAVE TURBID OR SEDIMENT LADEN DISCHARGE WATER MUST BE DISCHARGED TO AN APPROVED SEDIMENT BASIN ON THE PROJECT SITE WHENEVER POSSIBLE. IF THE WATER CANNOT BE DISCHARGED TO A BASIN PRIOR TO ENTERING THE SURFACE WATER, IT MUST BE TREATED WITH THE APPROPRIATE BMP'S SUCH THAT THE DISCHARGE DOES NOT ADVERSELY AFFECT THE RECEIVING WATER OR DOWNSTREAM LANDOWNERS. THE CONTRACTOR MUST ENSURE THAT DISCHARGE POINTS ARE ADEQUATELY PROTECTED FROM EROSION AND SCOUR. THE DISCHARGE MUST BE DISPERSED OVER NATURAL ROCK RIP RAP, SAND BAGS, PLASTIC SHEETING, OR OTHER ACCEPTED ENERGY DISSIPATION MEASURES. 2. ALL WATER FROM DEWATERING MUST BE DISCHARGED IN A MANNER THAT DOES NOT CAUSE NUISANCE CONDITIONS, EROSION, OR INUNDATION OF WETLANDS CAUSING SIGNIFICANT ADVERSE IMPACT TO THE WETLAND. D. INSPECTIONS AND MAINTENANCE 1. THE CONTRACTOR MUST APPOINT SOMEONE TO INSPECT THE CONSTRUCTION SITE ONCE EVERY SEVEN DAYS DURING ACTIVE CONSTRUCTION AND WITHIN 24 HOURS AFTER A RAINFALL EVENT OF GREATER THAN 0.5 INCHES IN 24 HOURS. ALL INSPECTIONS MUST BE RECORDED IN WRITING AND RETAINED PER M.P.C.A. N.P.D.E.S. REQUIREMENTS. (NOTE: LOCAL JURISDICTION MAY REQUIRE A MORE FREQUENT INTERVAL OF INSPECTION.) E. POLLUTION PREVENTION MANAGEMENT MEASURES 1. SOLID WASTE MUST BE DISPOSED OF PER M.P.C.A. REQUIREMENTS. 2. HAZARDOUS MATERIALS MUST BE STORED AND DISPOSED OF PER M.P.C.A. REGULATIONS. 3. EXTERNAL WASHING OF CONSTRUCTION VEHICLES MUST BE LIMITED TO A DEFINED AREA OF THE SITE. RUNOFF MUST BE CONTAINED AND WASTE PROPERLY DISPOSED OF. NO ENGINE DECREASING IS ALLOWED ON SITE. TWIN HOMES FAMILY LOTS HOLD DOWN AND SET BACKS wl SETBACK z' (MIN.) 10 ... FINISHED GRADE LO GRADING GRADE 5' ° 10' 0.5' TOPSOIL FRE- SPREAD X2.5' HOLD BASEMENT FLOOR-/ DOWN LOOKOUT (TYPICAL SECTION NOT TO SCALE) 7 25' w SETBACK zI (MIN.) 10' o BASEMENT FLOOR 72' FE FINISHED GRADE GRADING GRADE R 0 10' 0.5 TOPSOIL RE- SPREAD 3.0" HOLD DOWN RAMBLER CLICK NOT wl SETBACK z (MIN.) ° WO 10' ° Ild 10' °0 0.5' TOPSOIL �RE- SPREAD X2.00' HOLD b BASEMENT FLOOR DOWN WALKOUT (TYPICAL SECTION NOT TO SCALE Twin Homes Garage foundation to R -O -W =25 House foundation to R -O -W =25 Rea =25' Next to State ROW Min Area: Lot Area =7,260 SF Average Lot width: Lot width =50' 25' 25' 35' 25 ' 60' 25' 25' 35' R SETBACKS w, SETBACK z' (MIN.) R w, SETBACK zI R FINISHED GRADE w z SETBACK (MIN.) RLM Single Family Lots SINGLE FINISHED GRA DE (MIN.) GRADING GRADE 3:' Front: o�' LO GRADING GRADE �I R °i Lo WO Garage foundation to R -O -W =25 FAMILY POTS n 0' 1n 0 0 10' 10' ° House foundation to R -O -W =25 0' S' 0.5' TOPSOIL o RE- SPREAD w o' Side =5'- Garage 10'- Building HOLD DOWN 10' o.s' TOPSOIL `.�. o o� �`? RE- SPREAD - -0.5' TOPSOIL Rear =25' Min., 40' Bluff overlay/Wetlands AND - -- - - °� RE- SPREAD Min Area: SET BACKS 2.5' HOLD Lot Area =9,000 SF 2.67' HOLD 3.0' HOLD DOWN Lot Width: BASEMENT FLOOR DOWN BASEMENT FLOOR DOWN BASEMENT FLOOR Lot Width =75', 90' Shoreland Overlay Y LOOKOUT RAMBLER WALKOUT Max Building Coverage =35% (TYPICAL SECTION NOT TO SCALE) (TYPICAL SECTION NOT TO SCALE) (TYPICAL SECTION NOT TO SCALE) TWIN HOMES FAMILY LOTS HOLD DOWN AND SET BACKS wl SETBACK z' (MIN.) 10 ... FINISHED GRADE LO GRADING GRADE 5' ° 10' 0.5' TOPSOIL FRE- SPREAD X2.5' HOLD BASEMENT FLOOR-/ DOWN LOOKOUT (TYPICAL SECTION NOT TO SCALE) 7 25' w SETBACK zI (MIN.) 10' o BASEMENT FLOOR 72' FE FINISHED GRADE GRADING GRADE R 0 10' 0.5 TOPSOIL RE- SPREAD 3.0" HOLD DOWN RAMBLER CLICK NOT wl SETBACK z (MIN.) ° WO 10' ° Ild 10' °0 0.5' TOPSOIL �RE- SPREAD X2.00' HOLD b BASEMENT FLOOR DOWN WALKOUT (TYPICAL SECTION NOT TO SCALE Twin Homes Garage foundation to R -O -W =25 House foundation to R -O -W =25 Rea =25' Next to State ROW Min Area: Lot Area =7,260 SF Average Lot width: Lot width =50'