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HomeMy WebLinkAbout002-1032-70-200 (2) pp~~~ sin #2243 ` 6\1LEVALUATION REPORT Department of Commerce in accordance with Comm 85, Wis. Adm. Code Page 1 of 3 Division of Safety and Buildings Certified Soil Testing, LLC Attach complete site plan on paper no less than 8'/z x 11 ches 1n~3t2E}OMrins County include, but not limited to: vertical an horizontal referen point (BM), direction and St. Croix percent slope, scale or dimensions, orth arrow, and loca nand ~li~spncp t§ nearest road. Parcel I.D. MH 1 002-1 32-70 0 • 22 Z v Please print all inform i0 00 Reviewed By Date Personal information you provide may be used for se da (P~r v~ac~i.L4~~jm)). Property Owner tion cJ b Hughes, Diane (buyer) }tic -&tnv Govt. Lot SW1/4, SW1/ , S15, T29N, R16W Property Owner's Mailing Address Lot # Block # JS-u Name or CSM# 1333 Pearson Drive, N. Cindy Lamprecht 5 Acres City _ State Zip Code Phone Number City ❑ Village ®Town Nearest Road )/33 Maplewood MN 55119 651-773-7540 Baldwin 90Th Ave. X New Construction Use: ® Residential / Number of bedrooms 3 Code derived design flow rate 450 GPD r Replacement ❑ Public or commercial - Describe: Parent material loess over till Food lain elevation, if applicable NA ft. General comments and recommendations: soils lack A+4"; interpretative report required w/ state & county ap oval for residential development FTI Boring # ❑ Boring ® Pit Ground surface elev. 97.3 ft. Depth to limiting factor 0 in. Soil Application Rate Horizon Depth Dominant Color Redox Description Texture Structure Consisten Boundary Roots GPD/W in. Munsell Qu. Sz. Cont. Color Gr. Sz. Sh. 70#1 'Eff#2 1 0-11 7.5YR 3/2 - sil 2 f sbk mvfr CS lm .6 .8 2 11-16 10YR 5/4 m2p 7.5YR 5/8,4/6 10YR 6/2 sil 1 m -c abk mvfr cs 1m 4 6 3 16-30 5YR 4/4 f2d 7.5YR 5/3 scl 0 m mfr - 1m 0 0 lacks A+4"; presumptive limit is 011; 1 m roots to 22"; 5-11" has 2-20 mm inclusions B horizon Boring # Boring ® Pit Ground surface elev. 100..9 ft. Depth to limiting factor 0 in. Soil Application Rate Horizon Depth Dominant Color Redox Description Texture Structure Consisten Boundary Roots GPDtft2 in. Munsell Qu. Sz. Cont. Color Gr. Sz. Sh. •Eff#1 -Eff#2 1 0-11 7.5YR 3/1 - sil 2 f sbk mvfr cs 1m .6 .8 2 11-25 10YR 5/4 c2p 7.5YR 4/6 sil 1 c abk mvfr Cs lm .4 .6 l0YR 6/2 3 25-36 5YR 4/4 c2p 7.5YR 5/3 scl 0 m mfr - lm 0 0 lacks A+4'; presumptive limit is 0"; side seep @ 30"; horizon 2 parts to 2 f pl; 2-4 mm inclusions B horizon @ 7-11" * Effluent #1 = BOD5> 30 < 220 mg/L and TSS >30 150 mg/L ' Effluent #2 = BO-5 < 30 mg/L and TSS 30 mgt CST Name (Please Print) Sign to CST Number Henry F. Grote 49 222774 Address Certified Soil Testing, LLC Date Evaluation Conducted Telephone Number E. 4366 353rd Ave. Menomonie, WI 54751 5/13/2005 715-233-0398 SBD-8330 (R.07/00) r ~ Property Owner Hughes, Diane (buyer) Parcel ID # 002-1032-70-100 Page 2 of 3 3 ] Boring # Boring ~ Pit Ground surface elev. 99.5 ft. Depth to limiting factor 0 in. Soil Application Rat Horizon Depth Dominant Color Redox Description Texture Structure Consistence Boundary Roots GPD/W in. Munsell Qu. Sz. Cont. Cola Gr. Sz. Sh. *Eff#1 'Eff#2 1 0-9 10YR 3/2 - sil 2 f sbk mvfr cs if/m .6 .8 2 9-19 10YR 5/4 c2p 7.5YR 5/8,5/3 sicl 1 f-m sbk mvfr gs im .2 .3 3 19-30 5YR 4/4 c2p 5YR 5/8,5/3 scl 0 m mfr - lm 0 0 I I - lacks A+4'; presumptive limit is 0" 4 Boring # Boring Pit Ground surface elev. 99.3 ft. Depth to limiting factor 0 in. Soil Application Rat Horizon Depth Dominant Color Redox Description Texture Structure Consistence Boundary Roots GPD/ft= in. Munsell Qu. Sz. Cont. Color Gr. Sz. Sh. *Eff#1 'Eff#2 1 0-10 10YR 3/2 - sil 1 f-m sbk mvfr CS if/m .4 .6 2 10-15 10YR 5/3 c2p 7.5YR 4/6 Sil 1 f pl mvfr cs 1m .4 6 3 15-30 5YR 4/4 c2p 5YR 5/8,5/3 scl 0 m mfr - lm 0 0 i lacks A+4"; presumptive limit is 0"; side seep @ 26"; horizon 2 has some weak sbk structure in places but pl is dominant F-1 ~ Boring # Boring Pit Ground surface elev. ft. Depth to limiting factor in. Soil Application Rat Horizon Depth Dominant Color Redox Description Texture Structure Consistence Boundary Roots GPD/ft2 in. Munsell Qu. Sz. Cont. Cola Gr. Sz. Sh. 'Eff#1 *Eff#2 I _ i ` Effluent #1 = BODS > 30 < 220 mg/L and TSS >30 < 150 mg/L Effluent #2 = BODS < 30 mg/L and TSS < 30 mg/L The Department of Commerce is an equal opportunity service provider and employer. If you need assistance to access services or need material in an alternate format, please contact the department at 608-266-3151 or TTY 608-264-8777. SBD-8330 (R.07/00) Certified Soil Testing, LLC Y 3 's r s ~ n r ~J Parcel 002-1032-70-200 01/31/2008 07:58 AM PAGE 1 OF 1 Alt. Parcel 15.29.16.226B-20 002 - TOWN OF BALDWIN Current X ST. CROIX COUNTY, WISCONSIN Creation Date Historical Date Map # Sales Area Application # Permit # Permit Type 04/03/2006 00 0 Tax Address: Owners : 0 = Current Owner, C = Current Co-Owner O - HUGHES, DIANE D DIANE D HUGHES 1333 PEARSON DR N MAPLEWOOD MN 55119 Districts: SC = School SP = Special Property Address(es): Primary Type Dist # Description SC 0231 BALDWIN-WOODVILLE AREA SP 1700 WITC Legal Description: Acres: 4.420 Plat: 5133-CSM 20-5133 SEC 15 T29N R1 6W SW SW CSM 20-5133 LOT 2 Block/Condo Bldg: LOT 02 Tract(s): (Sec-Twn-Rng 401/4 1601/4) 15-29N-16W SW SW Notes: Parcel History: Date Doc # Vol/Page Type 02/01/2006 817701 WD 12/27/2005 814986 20/5133 CSM 11/04/2003 745693 2449/258 WD 04/12/2001 642641 1617/76 WD more... 2008 SUMMARY Bill M Fair Market Value: Assessed with: 0 Valuations: Last Changed: 10/25/2006 Description Class Acres Land Improve Total State Reason RESIDENTIAL G1 4.420 34,000 0 34,000 NO Totals for 2008: General Property 4.420 34,000 0 34,000 Woodland 0.000 0 0 Totals for 2007: General Property 4.420 34,000 0 34,000 Woodland 0.000 0 0 Lottery Credit: Claim Count: 0 Certification Date: Batch M Specials: User Special Code Category Amount Special Assessments Special Charges Delinquent Charges Total 0.00 0.00 0.00 FORM NO 985'~-A pf'I`r g 1 4, 9 g Es Stock No. 26273 VOL20 PAGE 5133 KATHGEEII H. ALsH REGISTER OF DEEDS 6=- CROTU Go low RECEIVED FOR ECORD 12/27/2405 09:40AM CERTIFIED SURVEY MAP REC FEE: 13.40 COPY FEE: 3.00 CERTIFIED SURVEY MAP NO. 5133 PAGES: 2 VOLUME 20 PAGE 5133 RECEIVED LOCATED IN PART OF THE SOUTHWEST 1/4 OF THE SOUTHWEST 1/4, SECTION 15, T29N, R16W, TOWN OF BALDWIN, ST. CROIX COUNTY, WISCONSIN. BEING VOL. AN ` 6 2U 2449, PAGE 258 West 1/4 Corner LEGEND Sec. 15 T29N. R16W S•CiM{1CCMNTy Fnd Berntsen Nail 0 GOVERNMENT CORNER (AS NOTED) WRVUOR'S RECORD o FOUND 1" O.D. IRON PIPE SCALE: 1"=100' • SET, 3/4" O.D. X 18" REBAR WEIGHING 1.502 LBS. ,M PER LINEAL FOOT. 0' 50' 100' 200' 'ao 0 SOIL BORING I ,N UNPLATTED LANDS I ca. I S89'59'51 "E 486.02' I I 452.95' N &J 33.07' 1 I w i 1 1 I 1 I 100' 1 2.4- V~4 I it M H i 11 LOT 2 q I I INCLUDING R.O.W. o 1 N 1 192,391 SQ. FT. 10 C~A -01 401 1 Z 1 I 4.42 ACRES a U? C3 to EXCLUDING R.O.W. .n CD 1 d LOT 1 C.5_M_ I 1 164,811 SQ. FT. /.i 3.78 ACRES ( OL_12. PAGE 3413 w~ 13 1 V al 1 I ~ I 3 I 1 6 6' 1 M 1 100' Building Setback line ~O Z 51 I L_--------------------- C) z I a 1 33' 33' 1 z iC iB6 CD O I 1 0 South 1/4 Corner 40 33.00' Sec. 15 T29N. R16W 1 1 N89'59'51"W 429.45' Fnd Berntsen Nail 460.44 2137_00' t Southwest Corner 'n co gQ'TJI-~`7V~( 4089'59'51 "W 2597.44' , Sec. 15 T29N, R16W Fnd Berntsen Nail r--------------------------------- I 1 1 I ; I UNPLATTED LANDS I ~ I 1 cceJJJ 'WY 1 I I 7S/ & NOTE: THIS IS A RETRACEMENT SURVEY OF AN %lry►~ S EXISTING PARCEL (V 4 P s NEW PARCELS ARE D. 01 Bearings Referenced to the West Line of the Southwest Quarter Section 15, T29N, R16W. ; 1 assumed to Bear N03'35'54"W. - CEDAR CORPORATION w\ r,604 WILSON AVENUE (715) 235-9081 This instrument was drafted by Scott Bechel SHEET 1 OF 2 Vol 20 Page 5133 V Parcel 002-1032-70-100 01/31/2008 08:08 AM PAGE 1 OF 1 Alt. Parcel 15.29.16.2268-10 002 - TOWN OF BALDWIN Current X ST. CROIX COUNTY, WISCONSIN Creation Date Historical Date Map # Sales Area Application # Permit # Permit Type 04/03/2006 00 5 Tax Address: Owner(s): 0 = Current Owner, C = Current Co-Owner 0 - LAMPRECHT, RETIRED RETIRED LAMPRECHT Districts: SC = School SP = Special Property Address(es): Primary Type Dist # Description SC 0231 BALDWIN-WOODVILLE AREA SP 1700 WITC Legal Description: Acres: 4.800 Plat: N/A-NOT AVAILABLE SEC 15 T29N R16W SW SW ALL THE S 406.55' Block/Condo Bldg: OF THE SW SW LYING W OF LOT 1 CSM 12/3413 INC.5 AC PARCEL IN THE SW COR Tract(s): (Sec-Twn-Rng 40 1/4 160 1/4) SW SW 15-29N-16W Notes: Parcel History: Date Doc # Vol/Page Type 11/04/2003 745693 2449/258 WD 04/12/2001 642641 1617/76 WD 10/27/1998 589987 1370/067 LC 2008 SUMMARY Bill Fair Market Value: Assessed with: 0 Valuations: Last Changed: 04/03/2006 Description Class Acres Land Improve Total State Reason Totals for 2008: General Property 0.000 0 0 0 Woodland 0.000 0 0 Totals for 2007: General Property 0.000 0 0 0 Woodland 0.000 0 0 Lottery Credit: Claim Count: 0 Certification Date: Batch Specials: User Special Code Category Amount Special Assessments Special Charges Delinquent Charges Total 0.00 0.00 0.00 ` • Safety and Buildings commerceml.gov RECEIVED 4003 N KINNEY COULEE RD LA CROSSE WI 54601-1831 TDD (608) 264-8777 i'sin ~0 ~ a 005 www.commerce.wi.gov/sb/ www.wisconsin.gov Department of Commerce ST. CROIX COUNTY Jim Doyle, Governor ZONING OFFICE Mary P. Burke, Secretary September 29, 2005 CUST ID No. 222774 ATTN: POWTS Inspector HENRY F GROTE ZONING OFFICE CERTIFIED SOIL TESTING ST CROIX COUNTY SPIA E4366 353RD AVE 1101 CARMICHAEL RD MENOMONIE WI 54751 HUDSON WI 54016 CONDITIONAL APPROVAL PLAN APPROVAL EXPIRES: NA Identification Numbers Transaction ID No. 1193436 SITE: Cindy Lamprecht Site ID No. 704408 Town of Baldwin, St Croix County Please refer to both identification numbers, SW 1/4, SW 1/4, S15, T29N, R16W above, in all correspondence with the agency. FOR: Object Type: Soil Saturation Determination Regulated Object ID No.: 1039229 The submittal described above has been reviewed for conformance with applicable Wisconsin Administrative Codes and Wisconsin Statutes. The submittal has been CONDITIONALLY APPROVED. The owner, as defined in chapter 101.01(10), Wisconsin Statutes, is responsible for compliance with all code requirements. The following conditions shall be met during construction or installation and prior to occupancy or use: 1. Approval is hereby granted pursuant to s. Comm 85.60(2), Wis. Adm. Code, to estimate the depth to seasonal soil saturation based on an interpretive determination process. Approval of the interpretive determination negates the requirement in s. Comm 85.30(2)(b), Wis. Adm. Code to designate the ground surface as the highest level of soil saturation when redoximorphic features are less than 4 inches below the bottom of the A horizon. 2. The estimated highest level of prolonged soil saturation approved under this determination is XXX inches below grade. At least 30 inches of sand lift on top of six inches of unsaturated, in-situ soil is required for adequate treatment and dispersal. 3. The basal soil application rate for the mound shall be 0.20 gpd/sf, and the linear loading rate 3.75 gpd/ft. 4. Chisel plowing to a depth of 16 inches immediately prior to sand placement is required to improve vertical water movement into the soil solum. 5. Landscaping up slope of the mound shall be incorporated into the POWTS design to prevent surface water from concentrating along the up slope edge of the mound and to divert surface water drainage away from the system. The drainage gradient of the adjacent road ditch along 90`x' Ave must be checked to ensure that it drains to minimize infiltration immediately up slope of the mound. 6. This approval shall remain valid unless the site is altered in such a way that the depth to soil saturation would change or if saturated conditions are observed for seven consecutive days at depths less than 3 feet below the infiltrative surface of the POWTS distribution component. 7. This approval in no way relinquishes the use of color patterns to estimate the depth to high groundwater on any other parcels or portions of parcels. 8. A copy of this approval letter and attachments must accompany the mound system design for this site for purposes of plan approval and sanitary permit issuance. If the Interpretive Determination Report was accompanied with a plan and an expiration date is shown on this letter, the expiration date only applies to the plans for the design, not to the decision on the Interpretive Determination Report. i HENRY F GROTE Page 2 9/29/2005 A copy of the approved plans, specifications and this letter shall be on-site during construction and open to inspection by authorized representatives of the Department, which may include local inspectors. If plan index sheets were submitted in lieu of additional full plansets, a copy of this approval letter and index sheet shall be attached to plans that correspond with the copy on file with the Department. All permits required by the state or the local municipality shall be obtained prior to commencement of construction/installatim/operation. In granting this approval the Division of Safety & Buildings reserves the right to require changes or additions should conditions arise making them necessary for code compliance. As per state stats 101.12(2), nothing in this review shall relieve the designer of the responsibility for designing a safe building, structure, or component. Inquiries concerning this correspondence may be made to me at the telephone number listed below, or at the address on this letterhead. Sincerely, Fee Required $ 100.00 Fee Received $ 100.00 Balance Due $ 0.00 eroy J.anlk~y, S, Was ater Specialist Integrated Services Bureau WiSMART code: 7633 (715) 726-2544 Voice (715) 726-2549 Fax Ijansky@commerce.state.wi.us 1193436 SAFETY AND BUILDINGS DIVISION commerce.wi.gov Integrated Services Bureau 13 East Spruce Street ■ Chippewa Falls, WI 54729 '+`+On~+'~ INSPECTION REPORT www.commerce.wi.g2544 (715) 7266- Department of Commerce Date of Inspection: September 26, 2005 Plumber Name and Address: Project Name: Lamprecht Use: Residential Legal Description: SW, SW, 15, 29, 16W Site Number: Subdivision: Certified Soil Tester Name and Address: Municipality: Town of Baldwin Henry F. Grote, CST,222774 County: St. Croix E 4366 353rd Ave. Menomonie, WI 54751 Plan Transaction Number: 1193436 Sanitary Permit Number: NA Owner Name and Address: Cindy Lamprecht Wastewater Flow: 450 gpd Persons Present: H. Grote, K. Grabau An onsite soils verification was conducted at the above referenced site as per district policy for all sites with less than four inches of unsaturated soil below the bottom of the A horizon. The intent of this investigation is to confirm initial observations by the certified soil tester (CST) relating to the presence or absence of redoximorphic features in the A horizon and/or subsoil. In-situ soil texture, structure, and consistence factors were also reviewed as they relate to wastewater application rates. Other site conditions such as percent and direction of slope, landscape position, land surface contour length, and surface water hydrology may also be noted and their effects are factors considered in the recommendations and conclusions portion of this report. A typical soil profile at T-1 could be described as follows: 00-04" 10YR 3/3 sil, 2m-cgr, mfr, aw. 04-10" 10YR 3/3 sil, 2msbk parting to pl, mfr, as. 10-16" 10YR 4/4 sil, 2fpl, mfr, w/ c3d 10YR 5/6 and 5/3 rmfs. If a mound system is designed to overcome limitations of a high level of seasonal soil saturation and slow permeability, the linear loading rate should not exceed 4.5 gpd/ft and the basal wastewater application rated should not exceed 0.2 gpd/ftz. The additional basal area will partially compensate for the gentle to moderate land slope and platy subsoil structure to prevent wastewater leakage at the mound toe. At least 30 inches of sand lift is recommended when applying septic tank effluent to the distribution cell of the mound to ensure proper treatment. The longest portion of the mound must be orientated along the contour. The mound shall be constructed to divert surface water around the mound structure as much as possible. In addition, an up slope drainage ditch should be considered if it is determined that surface or subsurface hydrology is improved by intercepting water and diverting it away from the mound site. If there are any questions regarding this report, please contact me. eroy G. nsky, stewat pecialist cc: ® County ❑ Plumber Ljansky commerce.state.w . is E-mail © CST ❑ Owner 715/726-2544 Voice 715/726-2549 Fax ❑ Other Interpretive Determination Report For an A+0" Mound Septic System 1193436 On the j Cindy Lamprecht Property SW /4, SW /4 Section 15, T 29 N, R 16 W Town of Baldwin St. Croix County, Wisconsin P.O.W.T.S. Submitted by Conditionally APPROVED DEPARTMENT OF COMMERCE DIVIS1 N OF SAFETY AND BUILDINGS Hen F. Grote CSTM 222774 _E CO ESP ENCE ' Certified Soil Testing, LLC E. 4366 353rd Ave. Menomonie, WI 54751 RECEIVED 715-233-0398 S E P 0 7.2005 SAFETY & BUILDINGS September 6, 2005 Contents Page Introduction 1 Methods 1 Local Hydrology 2 Geomorphology 3 Soil Disturbance and Hydraulic Modification 3 Landscape Position 3 Soil Series 4 Data 5 Conclusions/Recommendations 5 Attachments Soil Evaluation Report, Henry F. Grote i Topographic Detail, Section 9, T 29 N, R 16 W Soil Series Map, Soil Survey of St. Croix County i Interpretive Determination Report for an A+0" Mound Septic System on Cindy Lamprecht Property Introduction On May 13, 2005 Henry F. Grote, CSTM 222774, Certified Soil Testing, conducted a Soil and Site Evaluation on the Cindy Lamprecht property for the purpose of establishing the potential for an onsite wastewater dispersal system. This evaluation was conducted on the five acres located at the northeast corner of 240th St. and 90th Ave. in the SW'/4 of the SW 1/4 of Section 15, T 29 N, R 16 W, Town of Baldwin, St. Croix County, Wisconsin. Initial work was conducted for a potential buyer, Diane Hughes. Methods Soil color, texture, structure, consistence and redoximorphic features have been evaluated and reported on the accompanying Soil Evaluation Report in accordance with guidelines under Comm 85 of the Wisconsin Administrative Code. Pertinent information has been abstracted from the Soil Survey of St. Croix County, Wisconsin. Topographic detail has been obtained from the DeLorme 3-D TopoQuads CD mapping release. Additional reference sources include Redoximorphic Features for Identifying Aquic Conditions,' Field Indicators of Hydric Soils in the United States2, and notes from a continuing education program for shallow soil saturation.3 Field investigation included four backhoe pits, two were located on the optimal landscape position, higher ground north of the 90th Ave. right-of-way and two were located northwest of this area. Subsequently, three, additional, hand-dug pits were constructed in the optimal landscape area. Rod and transit elevations were obtained at pit locations and twenty foot intervals to allow the insertion of contour lines on the detailed plot plan. 1 Redoximorphic Features for Identifying Aquic Conditions, North Carolina Agricultural Research Service, Technical Bulletin 301, December 1999. Z Field Indicators of Hydric Soils in the United States, A Guide for Identifying and Delineating Hydric Soils, Version 4.0, March 1998. 3 Reading Shallow Soil Saturation, Ashland UW Ag Research Station, Jerry Tyler, October 15, 2004. YgKw+».. nn:...Mnu..w.P*rz*nu....C'Ya r , . Local Hydrology The major local hydrology input is from annual precipitation. This is estimated at from 29.57 inches4 to 30 inches.5 Surface runoff is an additional input most significantly during heavy precipitation events. The proposed mound site land use is weedy sod with corn ground down- slope to the north. A small upslope area land use is also weedy sod to the fence line which is nominally the right-of-way. South of the fence line is a moderately deep road ditch which serves to minimize surface and subsurface drainage to the north. Dense glacial till beneath a shallow loess cap provides significant groundwater protection from possible surface contamination. Water outputs consist of surface runoff, soil infiltration, and evapotranspiration. Surface runoff will generally be minimal unless frozen soil conditions or excessively heavy and prolonged precipitation occurs; the road ditch to the south minimizes upslope runoff in the proposed system area. Soil infiltration is described as "moderate" in the subsoil to "moderately slow" in the substratum for the Freeon silt loam, heavy substratum Series soils6 which are mapped in the proposed site area. The lower portion of the subsoil and the substratum are described as remaining saturated with water for longer times. Moderate infiltration is reasonable for the well structured silt loam A horizon; infiltration will slow through the B horizon because the subsoil at increasing depth exhibits weaker structure with increasing clay content occasionally texturing as silty clay loam with sandy clay loam noted at depth in good agreement with soils mapping. The proposed mound site has a surface drainage feature down-slope to the north. Slower infiltration is anticipated during wet spring periods when the soils are closer to field capacity and slow to dry. The underlying massive till unit will be significantly restrictive to vertical infiltration. Lateral movement of water through more permeable upper horizons will be facilitated by the 3.0 to 4.0 percent cross slopes below the proposed system design line. Heavy 4 Soil Survey of St. Croix County, United States Department of Agriculture, Soil Conservation Service, July 1987, p 139. (River Falls, WI data) s Wisconsin Average Annual Precipitation (1961-1990), www.crh.noaa.gov/mkx/data/wipcpn.gif 6 Soil Survey of St. Croix County, United States Department of Agriculture, Soil Conservation Service, July 1987, P. 31. 2 and prolonged precipitation - 2.5 inches in 24 hours; described as once in two years? - will also slow infiltration as the more permeable A horizon nears field capacity. Evapotranspiration will be a significant factor during the growing season but of no value during the winter season Geomorphology Limestone bedrock underlies most of St. Croix County. Typically the limestone is sandwiched between layers of sandstone which is then overlaid with glacial till forming the principal soil parent material. Cary sandy loam till, correlated with the third sub-stage of Wisconsin glaciation, is the parent till for Freeon Series soils. The Cary till is overlain by a thin concurrent and/or post-glaciation loess cap. Soil Disturbance and Hydraulic Modification The proposed mound location is uniform topography. The A horizon has generally moderate, medium granular and moderate fine sub-angular blocky structure; the B horizon generally has weak medium to coarse subangular blocky structure but frequently exhibits weak to moderate fine platy structure. While platy structure is often developed by the natural deposition of loess silt loam soils, some of the observed platy structure is likely induced by farm field operations as this site is immediately west of farm buildings and would have been a logical entrance to farm fields to the north. Hydraulic conductivity of the solum can - and should be - improved by deep chisel plowing to a depth of at least sixteen inches. This will reorient any platy structure at depth. Landscape Position The landscape position of the proposed mound site is on the east slope of a glacial ground moraine about one half mile south of the north terminus of the moraine. The proposed location, along the 100.0 contour, is located on Freeon silt loam soils, heavy substratum, up-slope from somewhat poorly drained Magnor Series soils to the north. A proposed design line of nominal ' Soil Survey of St. Croix County, United States Department of Agriculture, Soil Conservation Service, July 1987, p 140. 3 100.0 contour has a classic "nose" landscape, convex orientation. The moraine rises to the west to a nominal elevation of 1250 MSL about 1/8 mile northwest of the 100.0 contour which is at a nominal elevation of 1240 MSL. Small scale cross slopes at the proposed mound site are 3.0 to 4.0 to the north below the 100.0 contour. The moraine slopes from the 100.0 contour to the north and east about 1/4 mile to 1220 MSL at a surface drainage feature heading south to Carr Creek and continues to the south of Woodville joining the Eau Galle River at a nominal 1120 MSL. Surrounding land use is row crop farm fields the north both south of and north of the east-west drainage feature. A small area of dense brush and woods are located immediately northeast of the intersection of 240'' Street and 90`" Ave. No structures are down-slope to interfere with lateral movement of effluent. The 3.0 to 4.0% slopes at the mound site will somewhat increase the hydraulic gradient and encourage lateral movement of treated effluent. The existing road ditch serves to divert surface drainage away from and around the system. Road ditch effectiveness should be verified with elevation shots to ensure adequate slopes to avoid ponded water. Near- system upslope surface runoff can - and should - be minimized by the addition of extra fill soils from the center of the upslope mound structure. The extra fill materials will divert surface runoff towards the road ditch and to the west around the proposed mound system. Soil Series The Soil Survey of St. Croix County maps the site soils as Freeon silt loam, heavy substratum Series south of and up-slope from Magnor Series soils mapped to the north. The Magnor Series is on both sides of the east-west drainage feature generally trends to the east before entering the north-south drainage which becomes a part of Carr Creek. These soils are respectively generally described as "moderately well drained" (Freeon), and "somewhat poorly drained" (Magnor). The Freeon, heavy substratum is qualified by noting that while the A horizon may be described as moderately well drained the soil "permeability ranges from moderate in the subsoil to moderately slow in the substratum.s8 Field observations of soil pits are in good agreement with this mapping. Pit profiles representative of the proposed site agree with the typical Freeon Series a Soil Survey of St. Croix County, United States Department of Agriculture, Soil Conservation Service, July 1987, p. 31. 4 profiles showing silt loams above silty clay loams and sandy clay loams with A horizon color in good agreement at l OYR 3/2 and 7.5YR 3/2. Both series are Alfisols; Magnor and Freeon are Fine-loamy, mixed Family. The Magnor Series are subgroup Aquic Glossoboralfs while the Freeon Series are Typic Glossoboralfs. Field observations show redoximorphic features absent to depths of 9 to 10 inches in the proposed area. The redoximorphic features were not observed in backhoe pits until the B horizon was encountered. Under dry conditions low chroma inclusions, l OYR 6/3, were noted in two of the hand dug pits in the lower 1-2 inches of the A horizon. These low chroma features may be accumulated grey silts. The B horizon upper redoximorphic features were common or typically medium, prominent or distinct. Periodic soil saturation is indicated below seven to nine inches by these observations. Under relatively wet soil conditions in mid May a side seep was observed at 26 inches below grade in one backhoe pit; this also suggests suitable soil permeability in upper horizons. A pit at lower elevation and closer to the surface drainage feature gave profiles with darker A horizons, 7.5YR 3/1, and the redoximorphic features were many to common in the upper B horizon. Redoximorphic features in the A horizons may have been masked by the higher organic content and darker color. Data The soil and site evaluation report and data are similar to other sites which have received Department of Commerce approvals for A+0" mounds with a minimum of six inches of seasonally unsaturated soils in the upper A horizon. Examples include the Lisa Mosentine site, ID #636612, Anthony Ludwig site, ID #634143, Jon Mentink site, ID #787909, Tim Holldorf site, ID # 849265, and Karen & Keith Anderson site, ID #639788. Conclusions/Recommendations 1. Seasonally saturated soil conditions do not occur in the upper seven to nine inches of the soil profile as indicated by the absence of redoximorphic features. The site is 5 acceptable for a mound septic system with a minimum of seven inches of unsaturated soil for treatment and dispersal of treated wastewater effluent as allowed by Comm 83.44(3)(b)l. The seven inches of natural soil will allow treated effluent to be assimilated into the subsurface without ponding on the ground surface. 2. Mid spring observations of a side seep at 26 inches of depth is good evidence for a minimum of seven inches of suitable soils. 3. The A horizon is Munsell color 10YR 3/2 to 7.5YR 3/2 which indicates an organic matter content nominally of 25 g/kg in the range of 20-30 g/kg or 2.5 percent.9 This level of organic matter is indicative of relatively good drainage and aerobic conditions. 4. The relatively low level of organic matter indicated by the Munsell value of 3 should facilitate observation of high chroma redoximorphic features in the A horizon. The lack of observation of these features in the A horizon is strengthened by the low organic matter content which lends further evidence to a conclusion that at least seven inches of soil is present which is not periodically saturated for more than seven days. 5. No hydric soil indicators10 are present in the observed soil pits; this conclusion is based on particularly careful review of the indicators for All Soils and Loamy and Clayey Soils. 6. Site preparation requires mowing and removal of as much vegetation as possible followed by deep chisel plowing to at least a 16 inch depth which will facilitate infiltration into the natural soils. The deep chisel plowing will reorient any platy structure which might be present. 7. The drainage of the existing road ditch should be verified with elevation shots to ensure drainage with a minimum of three percent slopes which must be uniform to minimize the potential to pond water.. 8. The upslope toe of the mound shall be shaped with additional fill dirt from the center such that a nominal, settled 3% surface gradient is established towards the road ditch and to the west to ensure near surface runoff diversion around the west end of the mound structure. 9 Tyler presentation, Reading Shallow Soil Saturation, 10/15/04, Ashland UW Ag Research Station. 10 Field Indicators of Hydric Soils in the United States, A Guide for Identifying and Delineating Hydric Soils, Version 4.0 (March 1998), p5 ff, 13 ff, & 20ff.. 6 f Y 9. The mound must be a minimum length of 120 feet to ensure a linear loading rate no greater than 3.75 gallons per day per foot for a three bedroom residence. 10. For typical septic system effluent the mound must have a minimum of thirty inches of sand fill to ensure at least thirty-six inches of suitable soil for proper treatment. 11. Since the well structured silt loam topsoil is relatively shallow in places, consideration should be given to the installation of an aerobic treatment unit, or comparable treatment device. This will reduce the quantity of sand fill required, maximize system life, help overcome any platy soils remaining after deep chisel plowing, and protect the environment. 12. The mound basal area loading must be less than or equal to 0.2 gallons per day per square foot to comply with a highly treated effluent application rate for any moderate to strong platy structured silt loam soils which might remain. Deep chisel plowing should reorient any platy structure which would allow a higher soil application rate, but maintaining less than or equal to 0.2 gallons per day per square foot will ensure a conservative design for extended longevity. 13. Mound construction for ordinary septic effluent requires thirty inches of ASTM C-33 sand lift immediately placed on the freshly plowed ground surface. Construction must take place under relatively dry conditions. This depth of sand creates an effective sand filter and can be expected to produce a treated effluent with less than 30 mg/L of both BOD5 and TSS and fecal coliform concentrations of <10,000 cfu/100mL. If the highly treated effluent consideration is used, the sand depth may be reduced to eighteen inches and still maintain a conservative design. 14. The rock cell in the mound structure shall be 3.75' x 120.0' for a linear loading rate of 3.75 gallons per day per foot for a three bedroom residence for untreated effluent. 15. The sand basal area loading must be a maximum of 0.2 gallons per day per square foot which can be accomplished by extending the down-slope sand toe to fifteen feet below the down-slope edge of the rock cell if untreated effluent is used. 16. If highly treated effluent is used for the system design, the rock cell may be reduced to 1.75' x 120' which still maintains the 3.75 gallons per day linear loading rate, and the down-slope sand toe must be extended to seventeen feet to maintain the 0.2 gallons per 7 day sand basal loading rate. This design would be optimal for the site and is recommended. I 17. The system management plan must provide adequate maintenance information to maximize the system longevity. Final authority for this site's approval rests with the appropriate regulatory authorities, the Wisconsin Department of Commerce and the St. Croix County Zoning Office. This report, conclusions and recommendations are the professional opinion of Henry F. Grote, CSTM 222774. I I II 8 ~ t f 1 220 12.3 5 ~ N 159:75' } 5 9 o I ti f N44'-59:5' r V D i ka rz~ ~i f 2.0 N44'59.-25 3-D TopoQuads Copyright ®1999 DeLorme Yarmouth, ME 14096 Source Data, USGS 50 ft Scale: 1: 7100 Detail: 14-? Datum: WGSM yny 00 lp > f ~ ` -v Q 6~1 7. 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