Septic Field Sizing CalculationsOctober 18tH, 2020
Dale Denn
Homestead Septic
1108 Goldenrod Lane
Shakopee, MN 55379
MPCA License # 583
To: John Wicka
Subject: Septic Field Sizing Calculations
1601 Lake Lucy Road
Excelsior, MN 55331
Dear John,
Here are the Septic System Drainfield sizing calculations based on a total number of 7 bedrooms for two
residential use units on the property.
Preliminary Disclosure:
1. No soil borings have been done to validate the type, use, nor extent of suitable soils for a
drainfield.
2. No percolation test have been conducted.
3. The depth to a seasonally saturated soil water level is based upon worst case soils scenario of
just having the minimum of 12 inches of suitable soil above a restricting layer.
4. Septic sizing criteria is based on the soil characteristics of a clay loam soil designing for a
Mound on an estimated 6 percent slope.
5. No preliminary staking of rock and sand beds to reflect the overall footprint of the system has
been done.
6. Slope direction, length, and contours have not been established.
7. Essentially, the attached septic sizing information is not a design and the design forms utilized
are just to generate the overall square footage needed to fit a primary and a secondary septic
system on this property.
Sizing requirements per estimated septic calculations:
A. Primary Mound for 7 bedrooms is 45 x 122'. Or about 5500 square feet.
1. This would require a same elevation contour length of 122'.
B. A matching Alternate site would be the same: 5500 square feet.
1. This would also require a same elevation contour length of 122'.
C. There would be options to break the total system in half as far as placement and siting goes
to adjust to natural features of the landscape. But the overall square footage requirement
would remain the same or actually require more area.
D. Or one 5 bedroom system could be designed and placed for the home and one 2 bedroom
system designed and placed for the guest home. Square footage would again be about the
same or end up a bit larger.
Exhibit 1.
This area depicts the total area available for both the Primary and the Secondary Septic Sites for
this property. This area is determined and plotted by 'others' and not Homestead Septic. No
field or soil verifications have been made in this proposed area by Homestead Septic.
The proposed septic area is 12984 square feet.
Septic area required from estimated calculations total about 11,000.00 square feet.
These Septic Calculations and estimate Septic Sizing requirements have been accomplished by Dale
Den n/Homestead Septic. MPCA Licensed #583.
Dale Denn
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�r—operty Card Parcel ID Number 254070200
Taxpayer Information
Taxpayer Name
JOHN D WICKA
ANNE WICKA
Mailing Address
2547 BRIDLE CREEK TRL
CHANHASSEN, MN 55317 -
Property Address
Address
1601 LAKE LUCY RD
EXCELSIOR, MN 55331
Parcel Information
Uses Res V Land
GIS Acres 9.02 Net Acres
Deeded Acres 0.45
Plat
Lot
Block
Tax Description
Building Information
Building Style
Above Grade
Bedrooms
Homestead
N
Finished Sq Ft
Year Built
Garage
Miscellaneous Information
School District Watershed District
0276 WS 064 RILEY PURL BLUFF
Homestead
N
Green Acres
Ag Preserve
N
Assessor Information
Estimated Market Value
2018 Values
(Payable 2019)
2019 Values
(Payable 2020)
Last Sale
Land
$1,039,200.00
Date of Sale
7110/2018
Building
$23,800.00
Sale Value
$1,150,000.00
Total
$1,063,000.00
I he data provided Ins ith is for refomneo purposes only, This data ie not suitable for 1o9al, ongineering, survoyinq ar other cimiiar pure c— Carer Courcy does roi guarantee the accuracy of the
information contained herein. This data is furnished on an 'as is' basis and Carver County makes no representations or warranties, either expressed or implied, for the merchantability or fitness of the
information provided for any purpose, This disclaimer is provided pursuant to Minnesota Statutes §466.03 and the user of the data
provided herein acknowledges that Carver County shall not be liable for any damages, and by using this data in any way expressly waives all claims, and agrees to defend, indemnify, and hold
harmless Carver County, its officials, officers, agents, employees, etc. from any and all claims brought by anyone who uses the information provided for herein, its employees or agents, or
third parties which arise out of user's access_ By acceptance of this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user includes
with the data a copy of this disclaimer.
Monday, February 17, 2020 Carver County, MN
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"o,�sRTz.A LA& Preliminary
SwAGe MINNESOTA POLLUTION
TitEATW1C0 Evaluation Worksheet M CONTROL AGENCY
ftCSGRh9 "�.
1. Contact Information v 04.01.2020
Property Owner/ Client: John Wicka Date Completed: 10/18/2020
Site Address: 1601 Lake Lucy Road, Excelsior, MN 55331 Project ID:
Email: John.Wicka@gmail.com Phone: 612-805-6250
Mailing Address: 2547 Bridle Creek Trail, Chanhassen, MN 55317
Legal Description:
Parcel ID: 254070200 SEC: TWP: E= RNG:
2. Flow and General System Information
A. Client -Provided information
Project Type: El New Construction ❑ Replacement ❑ Expansion ❑ Repair
Project Use: El Residential ❑ Other Establishment:
Residential use: # Bedrooms: Dwelling Sq.ft.: Unfinished Sq. Ft.:
# Adults: # Children: # Teenagers:
In-home business (YIN): No If yes, describe:
El Garbage Disposal/Grinder El Dishwasher 0 Hot Tub*
Water -using devices: M Sewage pump in basement El Water Softener* 0 Sump Pump*
(check all that apply) E41 Large Bathtub X40 gallons Cl Iron Filter* ❑ Self -Cleaning Humidifier*
0 Clothes Washing Machine I] High Eff. Furnace* ❑ Other:
* Clear water source - should not go into system
Additionat current or future uses: done Anticipated
Anticipated non-domestic waste: None
The above is complete Ft accurate:
Client signature Ft date
B. Designer -determined flow Information Attach additional information as necessary.
Design Flow: 1050 GPD Anticipated Waste Type: Residential
BOD: X170 mg/L TSS X60 mg/L Oil Et Grease X25 mg/L_
3. Preliminary Site Information
A. Water Supply
Wells
Well Depth
Casing
Confining
STA
#
Description
Mn. ID#
(ft.)
Depth (ft.)
Layer
Setback
Source
1
>50
50
50'
2
3
4
Additional Well Information:
oM��* Preliminary
SfWAG& MINNESOTA POLLUTION
,RC,Ar Evaluation Worksheet m CONTROL AGENCY
Site within 200' of noncommunity transient well (Y/N) No
Yes, source:
Site within a drinking water supply management area (Y/N) No
Yes, source:
Site in Well Head Protection inner wellhead management zone (Y/N) Na
Yes, source:
Buried water supply pipes within 50 ft of proposed system (Y/N) No
B. Site located in a shoreland district/area? Yes
Yes, name: Lucy
Elevation of ordinary high water level: ft
Source:
Classification: Lake - General Development Tank Setback: ft.
STA Setbk: ft.
C. Site located in a floodplain? No
Yes, Type(s): NIA
Floodplain designation/ elevation (10 Year): NIA ft
Source: N/A
Floodplain designation /elevation (100 Year): NIA ft
Source: NIA
D. Property Line Id / Source: ❑ owner 2 Survey ❑ County GIS ❑ Plat Map ❑ Other:
E. ID distance of relevant setbacks on map: 0 water l] Easements ❑ Weil(s)
R Building(s) El Property lines 0 OHWL ❑ Other:
4, Preliminary Soil Profile Information From Web Soil Survey (attach map & description)
Map Units: Lester/Killkenny Loams
Slope Mange: 2 12% %
List landforms: Upland Summit/River Terrace interluve
Landform position (s): Back/Sideslope
Parent materials: Till/Lucustrine
Depth to Bedrock/ Restrictive Feature:in Depth to Watertable:in
Septic Tank Absorption Field- At -grade:
Map Unit
Ratings Septic Tank Absorption Field- Mound:
Septic Tank Absorption Field- Trench:
5. Local Government Unit Information
Name of LGU: City of Chanhassen
LGU Contact: Eric -
LGU-specific setbacks: Same as 7080 but have Bluff Ordinance
LGU-specific design requirements: Same as 7080 but have Bluff Ordinance
LGU-specific installation requirements: Same as 7080 but have Bluff Ordinance
Notes:
,, Field
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5cwarf MINNESOTA POLLUTION
LATfkNs„ Evaluation Worksheet CONTROL AGENCY
1. Project Information v 04.01.2020
Property Owner/Client: John Wicka Project ID:
Site Address: 1601 Lake Lucy Road, Excelsior, MN 55331 Date Completed:
2. Utility and Structure Information
Utility Locations Identified ❑ Gopher State One Call # ❑ Any Private Utilities:
Locate and Verify (see Site Evaluation map) 0 Existing Buildings [Z Improvements Q Easements Q Setbacks
3. Site Information
Vegetation type(s): Forest Landscape position: Back/ Side Slope
Percent slope: 6 % Slope shape: Linear, Linear Slope direction: south
Describe the flooding or run-on potential of site:
Describe the need for Type III or Type IV system:
Note:
Proposed soil treatment area protected? (YIN): Yes If yes, describe: Location
4. General Soils Information
Filled, Compacted, Disturbed areas (YIN):
If yes, describe:
Soil observations were conducted in the proposed system location (YIN):
A soil observation in the most Limiting area of the proposed system (Y/N):
Number of soil observations: Soil observation logs attached (YIN):
Percolation tests performed a attached (YIN):
5. Phase I. Reporting Information
Depth Elevation
Limiting Condition*: 12 in ft `Most Restrictive Depth Identified from List Below
Periodically saturated soil: 12 in ft Soil Texture:
Standing water: in ft Percolation Rate: min/inch
Bedrock: in ft Soil Hyd Loading Rate: 1.2 Igpd/ft2
Benchmark Elevation: 100.0 ft Elevations and Benchmark on map? (Y/N):
Benchmark Elevation Location:
Differences between soil survey and field evaluation:
Site evaluation issues / comments:
Anticipated construction issues:
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MINNESOTA POLLUTION
Design Summary Page CONTROL AGENCY
1. PROJECT INFORMATION
v 04.01.2020
Property Owner/Client: John Wicka
Project ID:
Site Address:1601 Lake Lucy Road, Excelsior, MN 55331
Date: 10/18/20
Email Address: John.Wicka'@gmait.com
Phone: 612-805-6.250
2. DESIGN FLOW Ft WASTE STRENGTH Attach data / estimate basis for Other Establishments
Design Flow: 1050 GPD
Anticipated Waste Type: Residential
BOD: <170 mg/L TSS: <60 mg/L Oil Ft Grease: <25 mg/L
Treatment Level: E=Select Treatment Level C for residential septic tank effluent
3. HOLDING TANK SIZING
Minimum Capacity: Residential =400 gal/bedroom, Other Establishment = Design Flow x 5.0, Minimum size 1000 gatlons
Code Minimum Holding Tank Capacity: Gallons
in Tanks or Compartments
Recommended Holding Tank. Capacity: Gallons
in Tanks or Compartments
Type of High Level Alarm:
{Set C 75% tank capacity)
Comments:
4. SEPTIC TANS( SIZING
..............................................................................................._...............................__..........._...._...._.........._.___....._............
.......... gal dwellings:
A.Re
_. ,.__..._,..._..__.....___.__...._._,.....,..._..._.............,..�......:
Number
Number of Bedrooms (Residential):
Code Minimum Septic Tank Capacity: 3000 Gallons
in Tanks or Compartments
Recommended Septic Tank Capacity: 3000 Gallons
in Tanks or Compartments
Effluent Screen & Alarm (YIN): Optional Model/Type:
........._........................._.......................... ................. ....... ................._...._._..._......................... ............. __......._....__..... _................_...
B. Other Establishments.
................................... ...... ..W .......... ................... ....... ...... ...... .......m.....,..._m___.....�__.._�...__.....,
Waste received by:
0 GPD x =Days Hyd. Retention Time
Code Minimum Septic Tank Capacity:Gallons
In Tanks or Compartments
Recommended Septic Tank Capacity:Gallons
In Tanks or Compartments
Effluent Screen Ft Alarm (YIN): Model/Type:
5. PUMP TANK SIZING
Pump Tank 1 Capacity (Minimum):Gal
Pump Tank 2 Capacity (Minimum): Gal
Pump Tank 1 Capacity (Recommended): Gal
Pump Tank 2 Capacity (Recommended): Gal
Pump 1 GPM Total Headft =
Pump 2GPM Total Headft
Supply Pipe Dia.in Dose Vol:gat
Supply Pipe Dia. Dose Vol.:Gat
SEWAGE
TFeEnYS tr:
P GGRw
MINNESOTA POLLUTION
Design Summary Page Im CONTROL AGENCY
G. SYSTEM AND DISTRIBUTION TYPE Project ID:
Soil Treatment Type: Mound Distribution Type: Pressure Distribution -Level
Elevation Benchmark: 100 ft Benchmark Location:
MPCA System Type: Type I Distribution Media:
Type III/IV Detai Is:
7. SITE EVALUATION SUMMARY:
. ......... .... ..... . ................................................ . ................ .... ......... ... ..... ........ ............... . .... ... .... .... .... .. .... ............................ . .. ......... ....... . ... I ........... .. .. . .......... ......... .. ..... . .......... . ... . ......... ........ ........ .......... ....... . . .........
Describe Limiting Condition: F Redoximorphic Features/ Saturated Soils
Layers with >35% Rock Fragments? (yes/no)= If yes, describe below: % rock and layer thickness, amount
of
soil credit and any additional information for addressing the rock fragments in this design.
'Note:
Depth Depth Elevation of Limiting Condition
Limiting Condition: 12 inches1.0 ft ft
Minimum Req'd Separation: 3b inches 3.0 ft Elevation Critical for system compliance
Code Max System Depth: Mound inches
E9 ft ft
is the maximimum depth to the bottom of the distribution media for required separation. NeRative Depth (ft) means it must be a mound
.......... .. ..... .. .. .. ... .. .......... .............. ....... . ..... .. ..... .. . ......... ....... ...... - ....... .... --- .. .. ... .. . ..... ..... .....
Soil Texture: F Clay Loam I
Soil Hyd. Loading Rate: 0.45 GPD/ft' Percolation Rate: MPI
Contour Loading Rate: 12 Note: F
Measured Land Slope: 6.Q % Note:
Comments: I
8. SOIL TREATMENT AREA DESIGN SUMMARY
Trench:
Dispersal Area ft 2 Sidewalk Depth in Trench Width ft
Total Lineal Feet ft No. of Trenches Code Max. Trench Depth in
Contour Loading Rate ft Length ft Designed Trench Depth in
Bed:
Dispersal Area ft2 Sidewall Depth in Maximum Bed Depth in
Bed Width ft Bed Length ft Designed Bed Depth in
Mound:
Dispersal Area 875.0 ft2 Bed Length 87.5 ft Bed Width 10.Q ft
Absorption Width 26.Q ft Clean Sand Lift 2.0 ft Berm Width (0-1%) ft
Upslope Berm Width 12.3 ft Downslope Berm z3.1 ft Endslope Berm Width 17.5 ft
Total System Length 122.7 ft System Width 45.4 ft Contour Loading Rate 12.0 gal/ft
Project ID:
11r.h irt+rt F9..tart.
Omsm
SFWZG
TREATMENT
MINNESOTA POLLUTION
Design Summary Page CONTROL AGENCY
At -Grade: - -
Bed Widthft Bed Lengthft Finished Heightft
Contour Loading Rategal/ft Upslope Bermft Downslope Bermft
Endslape Bermft System Lengthft System Width ft
Level it Equal Pressure Distribution
No. of Laterals Perforation Spacingft Perforation Diameterin
Lateral Diameter 0.00 in Min Dose Volume gat Max Dose Volume 263 gal
Non -Level
Lateral 1
Lateral 2
Lateral 3
Lateral 4
Lateral 5
Lateral 6
and Unequal
Pressure Distribution
Perf Size
(in)
Spacing
{ft}
Spacing
(in}
Minimum Dose
Volume
gal
Maximum Dose
Volume
gal
Elevation
Pipe Size
Pipe
(ft}
I hereby certify that I have completed this work in accordance with all applicable ordinances, rules and laws.
E: Dale Denn 583 10/18/2020
(Designer)
{in)
Volume
(gal/ft)
Pipe
Length {#fi)
Perf Size
(in)
Spacing
{ft}
Spacing
(in}
9. Additional Info for At -Risk, FISW or Type IV Design
A. Starting BOD Concentration = Design Flow X Starting BOD (mg/L) X 8.35 : 1,000,000
�gpd X �mg/L X 8.35: 1,000,00( = lbs. BOD/day
B. Target BOD Concentration = Design Flow X Target BOD (mg/L) X 8.35 _ 1,000,000
�gpd X �mg/L X 8.35 : 1,000,00( _ lbs. BOD/day
Lbs. BOD To Be Removed:
PreTreatment Technology: `Must Meet or Exceed Target
Disinfection Technology: Required for Levels A Et B
C. Organic Loading to Soil Treatment Area:
=mg/L X =gpd x 8.35 1,000,000 = �ftz = lbs./day/W
10. Comments/Special Design Considerations:
(Signature) (License #) (Date)
inutnxn a fG•�vuu
CTnsa-ra
SEY`�AGE
TREAvviEur
PROGRAM y__ 1h�...7-
Mound Design
1 Worksheet MINNESOTA POLLUTION
>A% Slope M-11 CONTROL ,AGENCY
1. SYSTEM SIZING: Project ID: v 04.01.2020
A. Design Flow:
B. Soil Loading Rate:
C. Depth to Limiting Condition
D. Percent Land Slope:
E. Design Media Loading Rate:
F. Mound Absorption Ratio:
1050 IGPD
GPD/ft 2
1.0 ft
6.0 %
1.2
GPD/ft2
2.60
Tabie I
MOUND CONTOUR LOADING RATES:
Measured
Treatment Levei C
TOxtury - darivvd
A, A-2, B,
Absorption
Area Loafts Nbuod
Rate Awn
Ir1p �7 Ratio
Porc Rata
OR
matmd absorption rat
01 W5
1.2 1
1.6
1
s 60nipi
OR
1.0. 1.3. 2,0, 2.4. 2.6
rf6
61-120 nlpi
5.0
120 mpi`
-5.0'
DISPERSAL MEDIA SIZING
TABLE IXa
0.45
LOADING RATES FOR DETERMINING BOTTOM ABSORPTION AREA
AND ABSORPTION RATIOS USING PERCOLATION TESTS
Percolation Rate
(MPI)
Treatment Levei C
Treatment Level
A, A-2, B,
Absorption
Area Loafts Nbuod
Rate Awn
Ir1p �7 Ratio
ArAbsorption
s
Rate
(f Rate)
Mound
Absorption
Ratio
01 W5
1.2 1
1.6
1
0 1 to 5 (fine santl
and ipanr fin¢ sa
0.6 2
1
1.6
16 to 30
0.6 2
0.7$
2
31 to 45
0-5 2A
0.7$
2
46 10 60
0.45 2.6
0.6
2.fi
61 to 120
- 6
0.3
5.3
120
*Systems with these values are not Type I systems.
Contour Loading Rate (linear loading rate) is a
recommended value.
A. Calculate Dispersal Bed Area: Design Flow _ Design Media Loading Rate
1050 GPD 1.2 GPD/ft2 = 875 ft2
If a larger dispersal media area is desired, enter size:ft
B. Enter Dispersal Bed Width: 10.0 ft Can not exceed 10 feet
C. Calculate Contour Loading Rate- Bed Width X Design Media Loading Rate
i0
ft 7. X 1.2 GPD/ft2 = 12.0 gal/ft Can not exceed Table 1
D. Calculate Minimum Dispersal Bed Length: Dispersal Bed Area : Bed Width
875 ft2 10.0 ft = 87.5 ft
13. ABSORPTION AREA SIZING I
A. Calculate Absorption Width: Bed Width X Mound Absorption Ratio
10.0 ft X Z.6 - 2b.0 ft
B. For slopes >1%, the Absorption Width is measured downhill from the upslope edge of the Bed.
Calculate Downslope Absorption Width: Absorption Width - Bed Width
26.0 ft - 10.0 ft = 15.0 ft
14. DISTRIBUTION MEDIA: ROCK Project ID: I
A. Rock Depth Below Distribution Pipe
6in 0.50 ft
15. DISTRIBUTION MEDIA: REGISTERED TREATMENT PRODUCTS: CHAMBERS AND EZFLOW
A. Enter Dispersal Media:
B. Enter the Component: Length: ft Width: ft Depth: ft
C, Number of Components per Row = Bed Length divided by Component Length (Round up)
ft : ft = components/row Check registered product
D. Actual Bed Length = Number of Components/row X Component Length: information for specific
components X ft = application details and
E. Number of Rows = Bed Width divided by Component Width (Round up) design
ft : ft = L� rows Adjust width so this is a whole number.
F. Total Number of Components = Number of Components per Row X Number of Rows
X _components
16. MOUND SIZING
A. Clean Sand Lift: Required Separation - Depth to Limiting Condition = Clean Sand Lift (1 ft minimum)
3.0 ft - 1.0 ft = 2.0 ft Design Sand Lift (optional): ft
B. Upslope Height: Clean Sand Lift + Depth of Media +Depth to Cover Pipe+ Depth of Cover (1 ft)
2.0 ft + 0.50 ft + 0.3 ft + 1.0 fit = 3.8 ft
Land Slope %0
1
2
3
4
5
6
7
8
9
10
11
12
Upslope Berm
Ratio
14414.00
3.00
2.91
2.83
2.75
2.6$
2.61
2.54
2.48
2.42
2.36
2.31
1
2.26
2.21
3.85 3.70 3.57 3.45 3.33 3.23 3.1.2 3.03 2.94 12.86 2.78 12.70
C. Select Upslope Berm Multiplier (based on land slope): 3.23
D. Calculate Upslope Berm Width: Multiplier X Upslope Mound Height
3.23 ft X 3.8 ft = 12.3 ft
E. Calculate Drop in Elevation Under Bed: Bed Width X Land Slope _ 100 = Drop (ft)
10.0 ft X b.0 % : 100 = 0.60 ft
F. Calculate Downslope Mound Height: Upslope Height + Drop in Elevation
3.8 1 ft +
0.60 I ft =1 4.4
Land Slope % 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12
Downslope 3:1 3.00 3.09 3.19 3.30 3.41 3.53 13,66 1 3.80 1 3.95 1 4.11 4-2-9-F4.48 1 4.69
Berm Ratio 14:114.00 14.17 1435 14.54 14.76 1 5.00 1 5.26 15.56 1 5.88 1 6.25 1 6.67 1 7.14 1 7.69
G. Select Downslope Berm Multiplier (based on land slope): 5.26
H. Calculate Downslope Berm Width: Downslope Multiplier X Downslope Height
5.26 x 4.4 ft = 23.1 ft
I. Calculate Minimum Berm to Cover Absorption Area: Downslope Absorption Width + 4 feet
16.0 ft + ft = 20.0 ft
J. Design Downslope Berm = greater of 4H and 41: 23.1 ft
K. Select Endslope Berm Multiplier: 4.00 (usually 3.0 or 4.0)
L. Calculate Endslope Berm X Downslope Mound Height = Endslope Berm Width
4.00 ft X 4.4 ft = 17.6 ft
M. Calculate Mound Width: Upslope Berm Width + Bed Width + Downslope Berm Width
12.3 ft + 10.0 ft + 23.1 ft = 45.4 ft
N. Calculate Mound Length: Endslope Berm Width + Bed Length + Endslope Berm Width
17.6 J ft + 87.5 ft + 17.6 ft = 122.7 ft
7. MOULD DIMENSIONS Project ID:
Upslope
i
Ends�lope
Dispersal Bed:
1�.6 10.0 X $7.�
23.1
Downslope
4' inspection piAe
r..— IS- cover On top
12.3
i.0 Clears sand iaft
Clean Sand
Comments:
122.7
2b.0
I
23.1
12` cover a -.t sides
t5' tosoitl