HomeMy WebLinkAbout034-1093-03-000 N�isconsin Department of Commerce SOIL AND SITE EVALUATION Pa,-e ( Of 3
Divi:-ion r;° o!";ty and Buildings Pa,
-e
accordance with Comm 85,Wis.Adm.Code
Attach complete site plan on paper not less than 8'/z x 1 I inches in size. Plan must include,but or County St.Croix
not limited to:vertical and horizontal reference point(BM),direction and percent slope,scale or
dimensions,north arrow,and location and distance to the nearest
road-0 Parcel ID# O �< Zj
r,r rvl c
APPLICANT INFORMATION- Please print all information 2 S t �S °'� eviewe Date:
Personal information you provide may be used for secondary purposes(Privacy Law,s.15.04(1)(m)). 1/ 3
Property owner: Property location
Kurt and Elizabeth Christensen Gov't lot: NW 1/4 NE 1/4 S07 T 29 N, R15 E(orfl
Property owner's mailing address: Lot a Block# Subd.Name r CS.W d
877 Benoy Road � N� N
City/State/Zip Code Phone number:
city Village Town Nearest Road
Hudson/ Wisconsin/54016 715-386-6340 Springfield 110th Avenue
El New Construction Use ❑ Residential/Number of bedrooms Unknown Addition to existing building:NA
❑ Replacement ❑ Public or commercial-describe
Code Design Flow Rate:Unknown-must be appropriate size for the contour and soil restrictions
Parent Material:Glacial Till-ground moraine
General Comments and Recommendations:Soils are somewhat poorly drained aqualfs or glossoboralfs underlain by clay loam. Redox features are the
result of perching above the dense clay loam layer. A long narrow mound SAS is recommended for this site with 2.50 foot of sand fill. ON-SITE
REQUESTED DUE TO A+0 SITUATION.
SOIL DESCRIPTION REPORT
Boring# Horizon Depth Dominant Redox Description Texture Structure Consistence Boundary Roots Soil Application Rate
in. Munsell Color Qu.Sz.Cont.Color Gr.Sz.Sh. GPD/FT2
Pit I Eff#1 Efl#2
Ap 0-10 IOYR 3/2 NA sil 2msbk mfr as 2f 0.5 0.8
Ground Btl 10-14 IOYR 4/3 fld 7.5YR 5/8 sl w/cl Imsbk mfr w If 0.4 0.6
Elev(ft.) g
103.02 Bt2 14-16 7.5YR 4/4 map 7.5YR 5/8 SO Ifsbk vmfi as NA 0.2 0.3
Depth to C 16-20 5YR 4/4 m3p 7.5YR 5/8 scl massive
limiting
factor-in.
0
Remarks:
Boring# Ap 0-5 1 OYR 3/3 NA sil 2fsbk mfr as 2f 0.5 0.8
Pit 2 E 5-7 1 OYR 4/3 NA sl 2fpl mfr gw 1 f 0.4 0.6
Bt 7-13 l OYR 4/4 f2d 7.5YR 5/6 sl w/cl 1 fsbk mfi gw NA 0.4 0.6
Ground
Elev(ft.) C 13-18 5YR 4/4 m3p 7.5YR 5/8 scl massive
102.48
Depth to
limiting
factor-in.
0 Remarks:
CST Name:Eli M.Gottfried, Gottfried Environmental Signature: 10- Tel.No.715-833-1400
Address: 124-1/2 Graham Ave. Eau Claire,WI.54701 Date:22 July 2003 CST#221981
' SOIL DESCRIPTION REPORT
to rr:owner Christensen
_ Parcel I D#
Boring# Horizon Depth Dominant Redox Description Texture Structure Consistence Boundary Roots Soil Application Rate
in. Munsell Color Qu.Sz.Cont.Color Gr.Sz.Sh. GPD/FTZ
UPI Eff#2
Ap 0-2 1 OYR 3/2 NA sil 2fsbk mfr aw 2f 0.5 0.8
Ground
Elev(fr.) E 2-7 1 OYR 4/4 NA A 2fsbk mfr gw If 0.5 0.8
103.02 Bt 7-10 7.5YR 4/4 P2d 7.5YR 5/8 sil w/cl 2fsbk mvfi as NA 0.5 0.8
Depth to C 10-14 IOYR 5/4 m3p 7.5YR 5/8 sicl massive
limiting
factor-in.
7
Remarks:
Boring# Horizon Depth Dominant Redox description Texture Structure Consistence Boundary Roots Soil Application Rate
in. Munsell Color Qu.Sz.Cont.Color Gr.Sz.Sh. GPD/FTZ
Pit4 Eff#1 Eff#2
Ap 0-7 l OYR 3/2 NA sil 2msbk mfr aw 2f 0.5 0.8
Ground E 7-10 IOYR 4/3 fld 7.5YR 5/8 A w/cl ]mpl mfr aw if 0.2 0.3
Elev(ft.)
98.40' Bt 10-16 7.5YR 4/4 m2d 7.5YR 5/8 sic] Imsbk mfi gw NA 0.2 0.3
Depth to C 16-19 7.5YR 4/4 m3p 7.5YR 5/8 cl massive
limiting
factor-in.
0
Remarks:
Boring# Ap 0-8 l OYR 3/2 NA sil 2msbk mfr aw 21' 0.5 0.8
Pit 5
E 8-11 1OYR 4/3 fld 7.5YR 5/8 sil w/cl Impl mfr aw if 0.2 0.3
Ground Bt 11-15 7.5YR 4/4 m2d 7.5YR 5/8 Sid lmsbk mfi gw NA 0.2 0.3
Elev(ft.)
97.80' C 15-18 7.5YR 4/4 m3p 7.5YR 5/8 cl massive
Depth to
limiting
factor-in.
0 L I
Remarks:
Boring# Horizon Depth Dominant Redox description Texture Structure Consistence Boundary Roots Soil Application Rate
in. Munsell Color Qu.Sz.Cont.Color Gr.Sz.Sh. GPD/FTZ
Pit 6 EfOl Eff#2
Ap 0-7 l OYR 3/2 NA sil 2msbk mfr aw 2f 0.5 0.8
Ground E 7-13 l OYR 4/3 fl d 7.5YR 5/8 A w/cl 1 mpl mfr aw 1 f 0.2 0.3
Elev(ft.)
98.40' Bt 13-15 7.5YR 4/4 m2d 7.5YR 5/8 sicl lmsbk mfi gw NA 0.2 0.3
Depth to C 15-20 7.5YR 4/4 m3 7.5YR 5/8 cl massive
limiting P
factor-in.
0
Remarks:
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Parcel #: 034-1093-03-000 04/01/2008 08:28 AM
PAGE 1 OF 1
Alt. Parcel#: 07.29.15.594 034-TOWN OF SPRINGFIELD
Current X ST. CROIX COUNTY,WISCONSIN
Creation Date Historical Date Map# Sales Area Application# Permit# Permit Type
02/17/2005 00 0
Tax Address: Owner(s): O=Current Owner, C=Current Co-Owner
O-CHRISTENSEN, KURT
KURT CHRISTENSEN
847 WYLDWOOD LN
HUDSON WI 54016
Districts: SC= School SP= Special Property Address(es): '=Primary
Type Dist# Description ` 1080 277TH ST
SC 2198 GLENWOOD CITY
SP 1700 WITC
Legal Description: Acres: 19.350 Plat: 10-047-MEADOW WOODLAND LOTS 1/3 034-05
SEC 7 T29N R15 PTS NW NE&SW NE MEADOW Block/Condo Bldg: LOT 003
WOODLAND ('05)LOT 3
Tract(s): (Sec-Twn-Rng 401/4 1601/4)
07-29N-15W SW NE
07-29N-15W NW NE
Notes: Parcel History:
Date Doc# Vol/Page Type
01/19/2005 785238 10/047 PLAT
2008 SUMMARY Bill#: Fair Market Value: Assessed with:
Use Value Assessment
Valuations: Last Changed: 06/15/2007
Description Class Acres Land Improve Total State Reason
AGRICULTURAL G4 19.350 3,400 0 3,400 NO
Totals for 2008:
General Property 19.350 3,400 0 3,400
Woodland 0.000 0 0
Totals for 2007:
General Property 19.350 3,400 0 3,400
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 DIVISION
commerce.wi.gov Integrated Services Bureau
13 East Spruce Street
INSPECTION REPORT Chippewa Falls, e. 54729
www.commerce.state.wi.us/sb
i sco ns i n (715)726-2544
Department of Commerce
Date of Inspection: April 21, 2003 Plumber Name and Address:
Project Name: Christensen Unknown
Use: Residential
Legal Description: NW, NE, 07, 29, 15W
Site Number: Certified Soil Tester Name and Address:
Subdivision: NA Eli M. Gottfried, CST 221981
Municipality: Town of Springfield 124 '/2 Graham St
County: St, Croix Eau Claire Wil 54701
Plan Transaction Number: 1006007 Owner Name and Address:
Sanitary Permit Number: Kurt& Elizabeth Christensen
877 Benoy Rd
Wastewater Flow: 450-600 gpd Hudson WI 54016
Persons Present: E. Gottfried (715) 874-6280
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 could be described as follows:
East Lot
00-02" 10YR 3/3 sil, 2m-cgr, mfr, aw.
02-06" 10YR 3/3 sil, 2msbk, mfr, as.
06-08" 10YR 3/2 sil, 2msbk, mfr, as.
08-12" 10YR 414 sil, 2msbk, mfr, cw, w/c3f 10YR 4/6 and 5/3 rmfs.
12-15" 7.5YR 4/4 sil, 1 csbk, mfr, w/f2f 7.5YR 4/6 rmfs.
Free water seepage through macro pores at 8 inches after prolonged rainfall.
West Lot
00-08" 10YR 3/3 sil, 2msbk, mfr, aw.
08-10" 10YR 3/3 and 10YR 4/4 sil, wmsbk, mfr, cw.
10-16" 10YR 4/4 sil, 2msbk, mfr, cw, w/c3f-d 10YR 4/6, 5/8, 6/3, and 5/3 rmfs.
Free water seepage through macro pores at 8 inches after prolonged rainfall.
I
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 4.0 gpd/ft and the basal wastewater application
rated should not exceed 0.2 gpd/ft2. The additional basal area will partially compensate for the gentle
land slope and 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.
i
Page 2 of 2
Christensen Site— 110th Ave
April 21, 2004
If there are any questions regarding this report, please contact me.
L roy G. J ky, Wastodter Spe list
Ljansky @c mmerce.state.wi.us E-mail
715/726-2544 Voice 715/726-2549 Fax
cc: ZjCounty ❑ Plumber ® CST ❑ Owner ❑ Other
Safety and Buildings
4003 N KINNEY COULEE RD
commerce.Wl.gov LA CROSSE WI 54601-1831
TDD#:(608)264-8777
j www•comm www.wisconsin.gov erce.state.wi.us/sb
itlisconsin ep irtment of Commerce
Jim Doyle,Governor
Cory L.Nettles,Secretary
June 11,2004
CUST ID No. 42258 ATTN:POWTS Inspector
ELI M GOTTFRIED
GOTTFRIED ENVIRONMENTAL ZONING OFFICE
124 1/2 GRAHAM AVE ST CROIX COUNTY SPIA
PO BOX 1645 1101 CARMICHAEL RD
EAU CLAIRE WI 54702-1645 HUDSON WI 54016
CONDITIONAL APPROVAL
:;.
PLAN APPROVAL EXPIRES: 06/11/2006 telrt�T I+Ie ,.. .
Transaction ID No 1006007
SITE: Kurt&Elizabeth Christensen Site ID No 684627
110TH Ave Site 4
Town of Springfield, St Croix County r oe'd
NW 1/4,NE 1/4, S7,T29N,R15W
Lot 5(Proposed C
2 3 i-V7 11
FOR: Object Type: Soil Saturation Determination Regulated Object ID No.: 962040
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 Comm 85.60(2),Wis.Adm.Code to estimate the depth to seasonal soil
saturation based on an interpretative determination. This approval and determination negates the requirement in
Corn 85.30(2)(b),Wis.Adm.Code to designate the ground surface as the highest level of saturation when
redoximorphic features are less than 4 inches below the bottom of the A horizon.
2. At least 30 inches of sand lift on top of a 6 inches minimum of unsaturated in-situ soil for adequate treatment
and dispersal is required.
3. The basal soil application rate shall be 0.2 gpd/ft^2,and the linear loading rate 4.0 gpd/foot.
4. Chisel plowing to a depth of 12 inches immediately prior to sand placement is required to improve vertical water
movement into the soil solum that is weakly structured and slowly permeable.
5. Landscaping up slope of the mound shall be incorporated into the mound design to divert surface water drainage
around the mound system.
6. Perimeter side slopes on the mound shall be at least 4:1 rather than the standard 3:1 slope ratio.
7. Up slope surface water diversions are required to ensure the mound areas down slope remain a dry as possible.
8. This approval shall remain valid unless the site is altered in such a way that the depth to soil saturation would
change of if saturated conditions were observed for seven consecutive days at depths less than 3 feet below the
infiltrative surface of the POWTS distribution component.
9. 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.
10. A copy of this approval letter and attachments must accompany the mound system plans for this site.
T r ELI M GOTTFRIED Page 2 6/11/04
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/installation/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
Leroy G. sky, Wastewater Specialist
Integrated Services Bureau
(715)726-2544 Voice
(715)726-2549 Fax
ljansky @commerce.state.wi.us
GOTTFRIED ENVIRONMENTAL 04
124 Graham Ave.,Eau Claire,WI 54701; 715-833-1400 9,cF Uti �O
telephone: 715-833-1400; fax: 715-833-1381;email: elicstm(&sbcSlobal.net 2`O
OQ
INTERPRETATIVE REPORT *4�
11so
P.O.W.T.S. •
May 7, 2004 10 ® 6 ® ® 7 t Conditionally
Proper owner: Kurt and Elizabeth Christensen AljrKRjVED
Legal Description: NW NE 07 29 15W DEPARTMENT OF COMMERCE
Springfield, St. Croix County D`IV1 1ON OF SAFETY AND BUILDINGS
SEE CCftRESP04bENCE ,,-
INTRODUCTION
On 22 July 2003, a soil test and evaluation was conducted by this soil tester on the property
described above. The soil test was done in response to a request by the property owner,
Elizabeth Christensen, as part of the development of this parcel for residences. The proposed lots
noted in this report are part of a parcel of land originally encompassing approximately 30 acres.
In a previous interpretive report, approximately 20 acres of this land was assessed for the
placement of mound type septic systems. On 21 July 2003, an approval of the interpretive report
for the north 20 acres was issued (Transaction number# 888116).
It is the intention of the property owners, Kurt and Elizabeth Christensen,to subdivide this
south 10 Acre (approximate)portion of land into 2 parcels. Each parcel is intended to have 1
residence. This portion of land lays immediately south of lots 3 and 5 of the original CSM.
RATIONAL FOR THE INTERPRETIVE REPORT
High and low chroma features in the soil as compared with matrix soil colors are considered as
indicators of seasonal saturation in the State of Wisconsin. Department of Commerce Comm
81.01 (118) states:
"High groundwater"means zones of soil saturation which include perched water tables,
shallow regional groundwater tables or aquifers, or zones that are seasonally, periodically
or permanently saturated.
Comm 81.01 (119) further defines evidence of seasonal saturation in the soils:
"High groundwater elevation"means the higher of either the elevation to which the soil is
saturated when observed as a free water surface, or the elevation to which the soil has
been seasonally or periodically saturated as indicated by the highest elevation of
redoximorphic features in the soils.
At least 36 inches of soil separation is required between the bottom of the soil absorption system
and the redoximorphic soil features in most types of soils (Table 83.44-3, Department of
Commerce). Where this does not exist, an above ground SAS must be constructed(i.e. mound or
1
a ,
At-Grade).
The initial determination of this site has found the site to be unsuitable for mound type septic
systems (Soil Absorption System), as per WAC Comm 85.30(2)(a) and (b). This code section
mandates that:
1. Redoximorphic features be used as an indicator of seasonal saturation in the soils.
2. Redoximorphic features appearing at depths of within 4 inches of the bottom of the A
horizon shall be interpreted as seasonal saturation occurring at ground surface ("Unless
determined otherwise...,the highest elevation of seasonal soil saturation shall be the
ground surface where redoximorphic features are present within 4 inches of the bottom of
the A horizon.")
Although Comm 85.30(2)(b)mandates that redoximorphic features within 4 inches of the A
horizon be interpreted as seasonal saturation to ground surface, Comm 85.60(2)(a) allows for an
interpretive determination of the soil conditions and depth to seasonal saturation should this
condition exist. This section states in part:
"A written report by a certified soil tester evaluating and interpreting redoximorphic soil features
... may be submitted to the department in lieu of high groundwater determination data. The
written report shall conclusively demonstrate that the existing soil morphological features or
color patterns are not indicative of current conditions of periodic soil saturation."
This is the basis for the current report.
GEOLOGICAL HISTORY
The subsurface formation in St. Croix County consists of the Prairie Du Chien Group (dolomite
and sandy dolomite). Depth to bedrock ranges from 0 - 15 meters (Brown, B.A. (1988)). This
formation is of Ordovician origin(Paleozoic era 425 mya). Dolomite appears to have been laid
during the early Ordovician period, while the sandstone was laid during the late part of the period
(Paull, R.K. and Paull, R.A. (1977)).
Glaciation of St. Croix County occurred many times during the history of the earth, although the
most recent glaciation, during the Pleistocene epoch(approximately 1 million to 10,000 years
before present), is the most apparent. There were several stages of glacial advance,the most
recent being the Wisconsinan stage. This was the result of the advance of the Superior Lobe and,
from this, the Chippewa Lobe (Martin, L. (1965). The Physical Geology of Wisconsin.
University of Wisconsin Press, Madison, Wisconsin).
St. Croix County appears to be part of the geographical province of the Western Upland. As
noted by Paull et al (Paull, R.K., R.A. Paull (1977) Geology of Wisconsin and Upper Michigan.
Kendall /Hunt Publishing Company, Dubuque, IA), "The Paleozoic rocks ... are the retreating
erosional edges of marine sediments that once extended across the Northern Highland.... Late
Cambrian seas washed over the Precambrian erosional surface to deposit more than 1,000 feet of
sandstone, with minor amounts of interbedded dolomite."
The St. Croix River has its origin in the Northern Highlands and its resistant Precambrian rock.
2
The loess deposits in St. Croix County appear to be the result of the westerly winds carrying fine
textured soils easterly to the eastern bluffs of the river and beyond.
The soils observed on site suggest that the area has been influenced by glaciation. Soils appear to
be loess (fine-textured, wind blown soil), underlain by glacial till.
The glacial till present as parent material in the subsoil of the Christensen site is most likely the
result of deposit from the Superior Lobe (Chippewa Lobe) material. Loess,present as soil of the
Ap horizon, may be the result of the influence of the wind-blown fines of the St Croix River
floodplain.
DESCRIPTION OF THE SITE
The parcel of land under investigation lays in the NW 1/4 of the NE 1/4 of Section 7, T29N, R15W,
Springfield Township, St. Croix County. All land lays south of 110th Avenue, east of County Road
D and west of 280th Street.
Lot 1 - South of established lot 5
The proposed mound site is located in the southwest corner of the proposed lot. The slope on this
site is 3.6%to the west and northwest. The mound is sited at a high elevation of the site, although
not the highest. Soils are composed of silt loam underlain by clay loam and sandy clay loam. Soil
survey maps for the area indicate that the taxonomic classification of soils on site is Typic
Glossoboralf(Freeon series). The soils are further described as having a sandy loam parent
material.
Lot 2 - south of established lot 3
The site proposed for the mound septic system has similar soils to that in the vicinity of lot 1.
However, no sandy loam parent material was observed, although soil maps classify this area as
Freeon series soil. It is possible that this soil tester did not dig deep enough to find the coarse
material. The slope on this proposed lot is 4%to the west.
LOCAL HYDROLOGY
As noted on the accompanying plot plans,the proposed dispersal sites have a slope ranging from
3.6 to 4%. The land slopes from the east to the west. General surface flow appears to be west
towards the Eau Galle River, based on the topographic map for the area. Local subsurface flow
presumably also flows west towards the river. Regional flow may be west towards the St. Croix
River.
The topographic maps consulted for this report do not indicate any wetland areas in the immediate
vicinity of the proposed mound dispersal systems. No naturally occurring areas of standing water
were observed in the area of the proposed mound POWTS. There are however, areas of
converging slopes north and south of the proposed mound sites. These areas of
converging slopes drain to the west.
SOIL MAPPING OF THE AREA
Direct soil mapping of this area by this soil tester indicates that,taxonomically,this soil is an
Aquic Glossoboralf. Aquic Glossoboralfs have a boric temperature regime with elluvial and
illuvial horizons which are saturated at some time during the year(as evidenced by the
redoximorphic features). Soil series maps for this area characterize this area however as Typic
Glossoboralf. The profile is described as being slightly acidic, suggesting that the profile is aged.
The aging may be due to a greater than average amount of water movement through the soil.
Specifically, soils in this area are mapped Freeon(FnB). According to the St Croix County Soil
Survey book, native vegetation for this area was primarily white pine, red oak, and hard maple.
According to the National Audubon Society Field Guide to North American Trees (Eastern
Region), (copyright 1998, Chanticleer Press Inc.,NY,NY), white pine grows in well-drained
soils. Red Oak (also known as Scarlet Oak and Black Oak), grows in upland ridges and slopes.
Maple grows in upland moist soils. All 3 types of trees therefore, appear to grow in well-drained
or moderately well-drained soils. In relation to their tendency to grow in wetlands or histic soils,
the 3 are classified as facultative plants (red, silver maple), or non-wetland plants (white pine).
As noted in the CST Soil and Site Evaluation, clay loam and silty clay loam was encountered in
all pits in the vicinity of the proposed mound soil absorption systems. Depth to these layers
varied from 7 to 11 inches.
SIGNIFICANCE OF REPORTED SOIL CONDITIONS AND SURFACE
WATER FLOW
General surface water flow in the area may be primarily vertical for the first 7 inches
(approximately) as a result of the relatively permeable upper horizons. Permeability is
moderately slow in the subsoil and is most likely perching above the dense silty clay loam
subsoil layer.
Soil structure may have been impacted as a result of extensive cultivation of these sites, although
moderate structure is present in the Ap horizon. Alternatively,the plowing and tilling may have
loosened and aerated soils that may have otherwise been compacted as a result of farm machinery
traveling over the sites. Platey structure was observed in the subsoil (E horizon), although the
structure was weak. The effects of compaction may be present in the Bt horizon.
Also present in the Ap horizon, and slightly into the subsoil,were worm channels, suggesting
that the upper horizon was aerated enough to support aerobic organisms. Roots and root
channels were also present in the 0 to 6" range of the soil profile.
Soil colors as noted by this soil tester were 10YR 3/2 from 0-8" (approximately) in the areas of
the proposed drainfields. This suggests that, at least in the Ap horizon, there is not an anoxic soil
regimen. The lack of redoximorphic features and the light(IOYR 3/2) colors in the Ap horizon
in this layer suggests that the soils are not saturated for more than 7 consecutive days.
Structure in the A horizon was moderate for all the its observed. In the E horizon late
Ap p p Y
structure was observed. Although platey,the grade was weak, indicating that water movement,
4
would be impeded but not prevented, from moving vertically. The abrupt appearance of redox
` features in the soil profile suggests that when dense soil conditions are encountered, water
remains for a significant period of time. High chroma redox features were encountered in the
subsoil starting at 10 to 13 inches. Although not reported on the soil report, low chroma regions
(areas of iron depletions)were also observed.
No puddled or massive soils were observed in the area of the proposed SAS's to a depth of 7
inches. However, dense, moist firm soils were present. This situation must be addressed in the
overall design and construction of the dispersal cell.
Close inspection of the Ap horizon did not indicate the presence of redoximorphic features. This
suggests that although there is not an A+4 situation, there is adequate depth in the A horizon
(approximately 7 inches)to maintain a suitable distance between the bottom of the SAS and the
limiting factor and thus to allow for the placement of a mound SAS as per code.
HISTIC SOILS
Keys to Soil Taxonomy(1994) defines a histic epipedon as follows:
"... It consists of organic soil material ... if the soil has not been plowed. If the soil has been
plowed, the epipedon normally has a high content of organic matter ... The histic epipedon either
has aquic conditions for some time in most years or has been artificially drained."
The Keys to Soil Taxonomy defines aquic conditions as: "those [soils] which currently
experience continuous or periodic saturation and reduction.... Saturation is characterized by zero
or positive pressure in the soil-water and can generally be determined by observing free water in
an unlined auger hole."
In neither auger holes nor shallow hand-dug pits was standing water observed in the epipedon. In
addition, soil colors in the epipedon were not those characteristical of organic soils (IOYR 2/2).
Vepraskas (1996)points out 3 possible redoximorphic conditions:
1. Redox depletions around macropores and redox concentrations within the matrix;
2. Redox concentrations around macropores and redox depletions within the matrix;
3. Combination of the 2 conditions.
Each of the 3 conditions has a unique etiology. Condition 1 will occur, according to Vepraskas,
in situations where there is perching above a dense and slowly permeable layer. Such appears to
be the condition described on the site outlined in this report. However, redox depletions were
not observed in the macropores in the Ap horizon, in spite of the fact that the structure was
strong and the pores were therefore large.
CONCLUSIONS
No redoximorphic features were observed for at least 7 inches of the Ap horizon in any of the
pits evaluated. The soils in this upper 7 inches appeared to be well aerated with the presence of
roots and worm channels. Water movement therefore appears to take place in this upper layer.
5
There does not appear to be a condition of ponding for any significant period of time in this
upper layer. Redoximorphic concentrations appeared in the soils gradually, starting at
approximately 7 inches (faint) and increasing in intensity(prominent) at lower depths. The faint
redox concentrations may have been accompanied by redox depletions in the macropores
although this was not observed. Given the dark soil colors of the Ap horizon, if redox depletion
was present, it would have been visible. In the lower horizons, depletions may have been
masked by the more reduced matrix colors.
Slopes were approximately 4%, suggesting that water does move laterally away from the site.
PROPOSALS
This soil tester feels that mound systems on these sites would adequately provide effluent
treatment and dispersal as long as the follows design conditions are implemented:
1. The construction of the soil absorption system must be in the area designated on the plot
plans.
2. Areas lower in the landscape must not be used for soil absorption systems.
3. The distribution cell must be designed very long and narrow with a linear loading rate
less than 4.0 gpd/ft. This may limit the number of bedrooms and/or occupancy that can
be serviced on the site.
4. At least 2.50 feet of ASTM C-33 sand must be used under the laterals for proposed lots 1
and 2.
5. Maximum hole spacing in laterals must be 30 inches.
6. Slopes around the mound must be 1:4 rather than the traditional 1:3 to increase the toe
absorption area.
7. The area upslope of the proposed SAS must be provided with a constructed waterway to
divert water around the mounds. The purpose of the waterway will be to prevent water
from being trapped in the mounds.
i If you have any questions regarding this report, please
feel free to contact me at the above
address and/or telephone number.
Sincerely,
Eli M. Gottfried
Registered Sanitarian(80806), CST (221981), Licensed Designer(13 10)
6
REFERENCES
1. Brown, B.A. (1988) Bedrock Geology of Wisconsin,University of Wisconsin—
Extension, Madison Wisconsin.
2. Martin, L. (1965). The Physical Geology of Wisconsin. University of Wisconsin Press,
Madison, Wisconsin
3. Paull, R.K. and Paull, R.A. (1977) Geology of Wisconsin and Upper Michigan.
Kendall/Hunt Publishing Company, Dubuque, IA.
4. National Audubon Society Field Guide to North American Trees (Eastern Region):
(1998) Chanticleer Press Inc.,NY,NY
5. Soil survey of St Croix County(1978). United States Dept of Agriculture Soil
Conservation Service and Research Division of the College of Agriculture and Life
Sciences, University of Wisconsin.
6. Soil Survey Staff, U.S. Department of Agriculture (1994) Keys to Soil Taxonomy Sixth
Edition, United States Department of Agriculture, Soil Conservation Service. Pocahontas
Press Inc., Blacksburg, Virginia.
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