W911SA-22-Q-3081 Attachment 4 Ft McCoy North Post Wellhead Protection Plan.pdf

Wellhead Protection Plan North Post Wells 24, 25, 27, 28, 29, 30 Fort McCoy, North Post OTM Community Public Water System

1st revision, May 6th, 2021

Fort McCoy, North Post OTM Community Public Water System

Prepared by:

Short Elliott Hendrickson Inc.

329 Jay Street, Suite 301 La Crosse, WI 54601-4034

608.782.3161

First revision:

Michael Mliiler Water and Wastewater Branch

2171 South 8th Ave Fort McCoy, Wi 54656

608.388.6546

Date Michael L. Miller Water and Wastewater Branch Chief

6 May 2021

1 Introduction

2 Background

2.1 Water System Overview

2.2 Local Setting

2.3 Local Geology

2.4 Local Hydrogeology

2.5 Identification of Groundwater Flow Direction

3 Method Used to Delineate the Wellhead Protection Area

3.1 Plan Development

3.2 Assumptions and Boundary Conditions

3.3 Identification of Zone of Influence

3.4 Identification of Recharge Area

4 Establishment of a Wellhead Protection Area

5 Identification and Assessment of Potential Contamination Sources

6 Management Plan and Public Education Program

7 Water Conservation Program

8 Contingency Plan

9 Management Plan

9.1 Wellhead Protection Area

9.2 Separation Distances

10 Selected References

Contents

List of Figures Figure 1 – Site Location Figure 2 – Groundwater Flow Direction Figure 3 – Zone of Influence Figure 4 – Recharge Area/Capture Area Figure 5 – Model Grid and Boundary Conditions

North Post Wells 24, 25, 27, 28, 29, 30 Prepared for Fort McCoy, North Post OTM Community Public Water System

1 Introduction Wisconsin Department of Natural Resources (WDNR) and U.S. Environmental Protection Agency (USEPA) rules require that new community wells in Wisconsin have a WDNR-approved Wellhead Protection Plan (WHPP). A WHPP was originally prepared for all well fields for Fort McCoy in 1994 with several amendments occurring over recent years. This plan specifically updates the WHPP for the Fort McCoy North Post Wells.

The purpose of a WHPP is to minimize the risk of contamination of public groundwater supplies by assessing and managing activities in the land areas around each well. This WHPP details the type of groundwater supply sources, identifies the recharge areas and groundwater flow direction, and outlines a Wellhead Protection Area (WHPA) for the Fort McCoy North Post Wells in Monroe County, Wisconsin.

Requirements for WHPPs are defined by Wisconsin Administrative Code § NR 811.12(6).

WHPPs shall include:

• Identification of zone of influence

• Identification of recharge area

• Identification of groundwater flow direction

• Identification and assessment of potential contamination sources

• Establishment of a wellhead protection area (WHPA)

• Public education program for wellhead protection

• Water conservation program

• Contingency plan

• Management plan

2 Background

2.1 Water System Overview

The Fort McCoy water systems provide service to approximately 2,500 year-round customers including armed forces service members, dependents, civilians, and contract employees.

2.2

2.3

At Fort McCoy, there are three independent and unconnected potable water supply and distribution systems that are owned by the Federal Government and managed by Water and Wastewater Branch Chief , O&M Division, Directorate of Public Works. One of these water supplies is the “North Post” Water System with a well field including Well Nos. 24, 25, 27, 28, 29 and 30. The system is classified as Other than Municipal (OTM), with Public Water System Identification Number (PWSID) 64203029.

The North Post Water System provides water to the main cantonment area, and contains six potable water wells (24, 25, 27, 28, 29, 30) located within or just outside of the main cantonment area. There are eight additional wells located within the various ranges and training areas. The potable water wells range from a depth of 202 to 250 feet below the ground surface. The raw water is pumped to the water treatment plant (WTP) via SCADA controlled signals. Treatment includes pH adjustment utilizing caustic soda solution and disinfection with sodium hypochlorite solution. The water is pumped to the one-million-gallon above ground High Reservoir. Well No. 24 has a variable frequency drive which allows disinfected water to be pumped directly into the distribution system, bypassing the High Reservoir during emergency or maintenance conditions.

Local Setting The North Post wells are located within an approximately 52 acre area of irregular boundaries, with a longest distance between wells of just over one-half mile. Well No. 24 is within the fenced cantonment area, and the remaining wells are outside of the fenced cantonment area. All property in the area of the wells is owned by Fort McCoy. The North Post wellfield is depicted on Figure 1.

Fort McCoy is located in the Wisconsin Driftless Section of the Central Lowland Physiographic Province. The subject area is characterized by dissected plateaus into low lying flat areas with relief ranging from approximately 815 to 1450 feet mean sea level (MSL) or 248 to 440 meters MSL. The topography consists of flat, open areas to the west and south and hilly, wooded areas to the east and north. The grade generally falls toward the Tributary of Tarr Creek located east of all of the North Post wells. Tarr Creek runs from east to west, south of all of the North Post wells, toward the La Crosse River. (USACE, 1982 and 283D Engineer Detachment, 1979)

Fort McCoy lies within the Upper La Crosse Watershed of the Trempealeau-Black River Basin with the La Crosse River and its tributaries draining the majority of the Installation. The La Crosse River is a large perennial stream which meanders southwestward within a wide valley eventually discharging to the Mississippi River about 30 miles southwest of Fort McCoy.

Local Geology The local geology of the North Post Wells was derived from the well logs and prior investigations.

An extensive evaluation of the local geology was presented in the original WHPP (Rust, 1994).

For purposes of this WHPP, information obtained since 1994 are incorporated as appropriate.

The rocks and soils in the vicinity of Fort McCoy range in age from Precambrian basement rocks to recent alluvial deposits. The bedrock from oldest to youngest, includes Precambrian crystalline rocks, Cambrian sandstones, and Early Ordovician carbonate rocks. Weathered Precambrian granite was encountered at approximately 360 feet below ground surface in the vicinity of the North Post Wellfield. The sandstone unit is the Cambrian-age Wonewoc-Eau Claire-Mt. Simon Formations that can range in thickness from 200 to 400 feet. Ordovician rocks overlie the

2.4

Cambrian strata and are present only on the highest ridges at Fort McCoy. The unconsolidated alluvial deposits consist primarily of sand with some silt, clay and gravel derived from the weathering of sandstone bedrock. The alluvial deposits occur as valley fill above the sandstone.

Regionally, the thickness of unconsolidated deposits is estimated to range from 0 to 120 feet with the alluvium thickness generally increasing toward the La Crosse River and other stream valleys.

No apparent confining units are present in the North Post area and the Cambrian sandstone aquifer appears to be continuous and interconnected in this area. Shales are more common and occur with interbedded sandstones below the 320 foot depth, with the section between 320 and 375 feet considered non prospective. The detail provided on well logs varies, but all generally show approximately 6 to 14 feet of alluvial sand overlying sandstone.

Local Hydrogeology As described above, the North Post Wells are located within the Upper La Crosse Watershed as described by the Wisconsin DNR. In general water through the watershed flows to the southwest.

Within the project area defined by the area surrounding the North Post Wells there is the Squaw River and Tarr Creek. The rivers are approximately 7-12 feet wide with flow to the south west where they drain to the La Crosse River (Rust, 1994).

The water table in the area of the North Post Wells is encountered at depths less than 30 feet below grade and is likely present in the Wonewoc Formation sandstone. The Cambrian sandstone aquifer consists of both the Wonewoc and Mt. Simon Formations, and is at least 220 feet in thickness. Comparison of pumping levels and drawdowns in North Post wells suggests that silty sandstone intervals in the Cambrian sandstone aquifer can lower specific capacities.

Representative hydraulic parameters were obtained from a number of resources including the original WHPP (Rust, 1994), Engineering Report (SEH, January 31, 2014), and well installation activities completed since 1994.

The most extensive pump tests were conducted on the source water aquifer and analyzed as part of the original WHPP (Rust, 1994). Hydraulic Conductivity (K) values ranged from 1.9X10-2 cm/sec to 4.2x10-2 cm/sec (53.9 to 119 ft/day). These values coincide within generally accepted hydraulic conductivity ranges for a sandstone aquifer. Hydraulic conductivity values presented in Rust (1994) for slug tests are similar to those of the pump test results but appear to reflect more local conditions as opposed to the aquifer as a whole. Additionally, pumping tests have been conducted on North Post wells since the time of the detailed Wellhead Protection Study. Values from these pumping tests are within the same magnitude as those documented in the 1994 detailed Wellhead Protection Study. However, due to limited information about the methodology of these tests, extrapolation of these results are not representative for the overall sandstone aquifer. Pumping test results are presented in Appendix C. Porosity of the Sandstone Aquifer is assumed to be 0.2 based on data prepared by the Wisconsin Geological Survey for Sandstone (ranges 0.11 to 0.30). Aquifer Specific Storage was found to be .000000302 m-1 and was determined from a Well Recovery Test presented in a recovery test preformed and reported on 06/13/13 for North Post Well 25 (SEH, January 31, 2014).

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2.5 Identification of Groundwater Flow Direction

NR 811.12 (6) (a)

Groundwater flow direction is southwest as shown on the Wisconsin Geologic and Natural History Survey, Groundwater Elevation Map depicted on Figure 2 (Lippelt, 1981).

3 Method Used to Delineate the Wellhead Protection Area

3.1 Plan Development

Regulations established by the WDNR and USEPA require that new community wells in Wisconsin have a WDNR-approved WHPP. The following sections describe the methodologies used to delineate the Zone of Influence (ZOI), the Zone of Contribution (ZOC) and establish a Wellhead Protection Area (WHPA). Wisconsin’s Wellhead Protection rules require at a minimum that a WHPA use a minimum 5 year time of travel for groundwater or, at a minimum, a 1,200 foot radius around each well. Conservatively, Fort McCoy has elected to base its WHPA on a 15 year time of travel.

A numerical groundwater model was constructed to simulate the interaction of Fort McCoy’s North Post supply Wells within the surficial and groundwater system. This numerical model utilizes the United States Geologic Survey’s (USGS) modular three-dimensional groundwater flow (MODFLOW) model developed by McDonald and Harbaugh (1988) and is used to simulate groundwater flow to pumping wells. The post processing software Groundwater Vista developed by Environmental Simulations Incorporated was used to process and export USGS Modflow files.

The model for this report was developed to simulate hydraulic head distribution under long-term (steady-state) pumping conditions of the six North Post wells. MODPATH (Polluck, 1989) was used to delineate groundwater flow paths and areas contributing water (ZOC) to the pumping wells. Reverse particle tracking method was used along with 50 particles placed in cells directly adjacent to the North Post Wells. Reverse particle tracking traces the up-gradient flow paths for each particle for the time period specified. These particle paths show the time of travel and recharge areas modeled to supply the North Post Wellfield. For this report 5, 10 and 15 year time of travel particle plots are shown.

Figure 5 shows the model area and finite difference grid used for the project area. The model area extends around part of the Upper La Crosse Watershed and fully incorporates the North Post wellfield. The model grid includes 26,300 cells, 183 columns, and 144 rows. Grid spacing ranged from a few meters around the wellfield to 100 meter grid sizes near the boundary of the model. The model domain consists of a single layer to represent the sandy unconsolidated sediment and the underlying sandstone aquifer.

Information presented in previous chapters of this report on regional hydrogeology and geology discussed above were used to construct the model and are discussed below.

3.2 Assumptions and Boundary Conditions

The primary assumption for this model was that the water table and source water aquifer are hydrologically connected and for the sake of this model may be modeled as a single hydrologic unit. This assumption is supported by geologic well logs, regional pumping tests, and previous reports for the Fort McCoy wellfields. The unconsolidated sediment is only about a 10 foot thick layer overlying a thicker sandstone unit. The North Post wells have an open-hole length of approximately 200 feet and are open to the sandstone aquifer. Because the upper unconsolidated thickness is insignificant and there are no significant surficial confining layers, the model constructed a single layer to represent surficial sediment down to the known open-hole intervals of the North Post Wells. This single layer model representing the source water aquifer for the North Post Wells was set to a constant thickness of 200 feet to better represent aquifer transmissivity based upon the open-hole interval.

The model domain for the North Post wellfield was chosen to be contained within a portion of the Upper La Crosse Watershed. Boundary conditions within this domain were set to coincide with approximate hydraulic boundaries of the local drainage basin. The eastern boundary of the model corresponds to the watershed divide. Precipitation in this area contributes to the southern and western boundaries of the groundwater model. These are respectively the Skauw River and Tarr Creek. These were modeled with the MODFLOW River package and head values were adjusted to correspond to the surface elevation, stream thickness, and regional water table head elevations. Initial heads for the model were derived from the Wisconsin Geologic and Natural History Survey, Groundwater Elevation Map and further used to calibrate model results. The model top elevation was set based upon USGS digital elevation models for Wisconsin. As mentioned above, the base of the model was set at 200 feet where there is not expected to be an upward hydraulic gradient into the North Post wellfield.

Consistent with the original WHPP (Rust, 1994), recharge was based upon the assumption that 50% of precipitation after evapotranspiration enters as recharge for the model. Precipitation input of 30.5 inches per year was calculated from the average rainfall since 2000 from NOAA. Potential Evapotranspiration was estimated at 27 inches per year based on the Thornthwaite method.

Initial hydraulic head was based upon water table elevations from a survey completed by the Wisconsin Geologic and Natural History Survey, Groundwater Elevation Map as depicted on Figure 2 (Lippelt, 1981). Hydraulic conductivity values were based upon aquifer testing completed by Rust in 1994. The 24-hour pump test result found that hydraulic conductivity of the Sandstone Aquifer range from 52.48 ft/day to 121.36 ft/day. These values fall within typical ranges for a sandstone aquifer; an average of these values were used to represent Layer 1.

Table 3-1 – Model Inputs

Model Inputs Parameter Value Unit Source

Hydraulic Conductivity Sandstone Aquifer Low 16 m/day Aquifer Performance test: 72 hour aquifer test. (Rust, 1994) High 37 m/day Kz : Kx Ratio 0.1 unitless assumed Model input 26.5 m/day average of low and K calculation

Specific Storage of Sandstone Aquifer

Specific Storage 3.01752E-07 1/m Well 25 recovery test on 06/13/13:

Engineering Report (SEH, January 31, 2014)

Aquifer Thickness Model thickness based on open hole depth 57.912 m Well logs

Sandstone Aquifer Porosity

Porosity 0.2 unitless Wisconsin Geologic Survey for Sandstone (range 0.11 to 0.30)

Recharge Annual rainfall (P) 30.5 inches/year NOAA 5 year average Annual Evapotranspiration (ET) 27 inches/year Thornthwaite method

Net P-ET to storage 50 % WHPP (Rust, 1994) Aquifer recharge 0.00121824 m/day model input for recharge

Pumping Rates Well 24 300 gpm Projected demand Well 25 350 gpm Projected demand Well 27 400 gpm Projected demand Well 28 480 gpm Projected demand Well 29 400 gpm Projected demand Well 30 400 gpm Projected demand

River Hydraulic Conductivity of River Bed 4.572 m/day Assumed Hydraulic conductivity of a fine grained sandy river bed

Stream Width 4 m Average Stream width - measured from google earth;

Similar to values used by Rust, 1994.

River Conductance 18.288 m2/day Conductivity * stream width Model Mass Balance Summary

Inflows 107710.9404 m SEH Groundwater Model outflows 107711.132 m

Percent Error 0.0001778 %

3.3 Identification of Zone of Influence

NR 811.12 (6) (b)

The ZOI is calculated based on Wisconsin Administrative Code NR 811 requirements of 30 days continuous pumping at the anticipated final pumping rate and assuming 1 foot of drawdown at the limits of the ZOI. The ZOI for each well was calculated using aquifer properties determined from pumping test data from Well Nos. 27, 28, and 29. The radius for the ZOI was calculated using the Theis Well Function equation presented in the text Groundwater and Wells, Third Edition.

Transmissivity values used for this calculation ranged between 25344.28 to 44176.49 ft2/day and were determined from test pumping data for Well Nos. 27, 28, and 29; an average value was used for the remaining wells where test pumping data was not available. Individual transmissivity values were chosen to be used to better represent localized conditions for each well.

Transmissivity Test pumping data is included in Appendix C. The ZOI for each well is depicted in Figure 3. Calculations for the ZOI are presented in Appendix B.

Table 3-2 – Zone of Influence Well Number Zone of Influence

(feet) 24 1300 25 1300 27 1100 28 1200 29 1500 30 1300

3.4 Identification of Recharge Area

NR 811.12 (6) (c)

The recharge area is calculated using the Uniform Flow Equation. The side gradient and down gradient extent of the recharge areas for each well is listed in the table below. The up gradient portion of the Recharge Area extends approximately 20,000 feet to the north-east adjoining to the watershed’s groundwater divide (Lippelt, 1981). Calculations are included in Appendix B.

Transmissivity values for the recharge area calculation were established in Chapter 3.3. The Recharge Areas are depicted in Figure 4.

Table 3-3 – Recharge Area Well Number Side Gradient Down Gradient

(feet) (feet) 24 343 109 25 400 127 27 631 201 28 604 192 29 362 115 30 457 146

4 Establishment of a Wellhead Protection Area NR 811.12 (6) (e)

Based upon Wisconsin Rule NR 811.12 (6) (e) the Wellhead Protection Area (WHPA) must be based on, at a minimum, the portion of the recharge area equivalent to a 5-year time of travel to each well or a minimum a 1,200 foot radius around each well. Conservatively, Fort McCoy has applied a 15-year travel time to establish the WHPA plus where the 1,200 foot minimum radius supersedes the time of travel plots. The groundwater model discussed in previous sections of this report was used to establish the 15-year time of travel plots for this Wellhead Protection Area as shown in Figure 5. The 15-year travel paths extend up-gradient 9,000 feet (north-east).

Groundwater from the model does not depict pathways emanating from downgradient sources, south of the North Post Wellfield, the boundary for the WHPA was established based upon the 1,200 foot minimum radius. The resulting WHPA is shown on Figure 6.

5 Identification and Assessment of Potential Contamination Sources NR 811.12 (6) (d)

A review of potential contaminant sources was conducted by searching WDNR, Wisconsin Department of Safety and Professional Services, and U.S. Environmental Protection Agency (USEPA) databases, and reviewing the Wisconsin DNR Bureau of Remediation and Redevelopment website. During the well site investigation process, all sites were also evaluated for separation from potential contaminant sources identified in Wis. Adm. Code Chapter NR 811.

Table 5-1 – Potential Contamination Sources

Map Code Description

Distance/Direction from wells within

1/2-mile Potential to Impact Well

A Closed Site - Leaky Underground Storage Tank at Building 1010 ~ 300 ft Unlikely to impact well; site has been remediated

B Closed Site - Leaking Underground Storage Tank (LUST) at Building 10111

~ 1335 ft Unlikely to impact well; Closed LUST site

C Closed Site - Leaking Underground Storage Tank (LUST) at Building

~ 2700 ft Unlikely to impact well; Closed LUST site

- Fort McCoy Military Base Wells located on

Active military installation

Potential contaminant sources associated with military activity. No known contamination exists.

It is expected that facilities, maintenance, equipment, and activities may use of fuel, oil, chemicals and may require the use of storage tanks.

Potential contaminant sources associated with chemical storage of tanks. Fort McCoy should continue to update known or permanent tank locations within Wisconsin rule setback distances.

Source: Wisconsin DNR Bureau of Remediation and Redevelopment website

Potential contaminant sources within one-half mile of the well location are identified in the Public Water Supply Potential Contaminant Use Inventory Form found in Appendix D and are depicted in Figure 7. Outside of the half mile radius, there does not appear to be any additional potential contaminant sources throughout the remainder of the delineated recharge area. The results are summarized in the table above, which includes an assessment of the potential for the contamination sources to impact the wells.

6 Management Plan and Public Education Program NR 811.12 (6) (f)

The WHPA delineated by this report is located primarily on property of Fort McCoy, with portions of the WHPA both within and outside of the fenced area. The WHPA farthest to the east falls on private property owned by three private parties. Fort McCoy can restrict access and land use of the land that is under the jurisdiction of Fort McCoy. The Wellhead Protection Area and potential contaminant sources will be managed by the Fort McCoy Public Works. The Wellhead Protection Plan will be available to the public at the Public Works Department. If future contaminant sources are found to be impacting the source water, aquifer management strategies for the Wellhead Protection Area should be revised to better address any such need.

Private landowners within the WHPA will be notified of the WHPA.

7 Water Conservation Program NR 811.12 (6) (g)

A Water Conservation Plan for Fort McCoy has been developed, with various programs ongoing or with implementation in progress. The plan is included in Appendix E. These programs include:

• Routine Inspections

• Water Use Surveys

• Water Use Monitoring

• Plumbing Retrofits

• Annual Report Distribution

• Water Recirculating (vehicle washing)

The Water Conservation Plan is periodically reviewed and updated.

8 Contingency Plan NR 811.12 (6) (h)

Fort McCoy maintains a Water System Emergency Response Plan. The plan includes an overview of the water system, alternative water sources, a chain of command, communication procedures, and other vital information to facilitate an organized response to various issues that may occur with the water system. This document should be updated periodically and used as a guide during any water system emergency.

The North Post water supply contingency plan for replacing supply lost if a well should become contaminated includes several components:

1. There is no adjacent public water system for interconnection. Water can be trucked from the nearby Fort McCoy public water facilities, and bottled water and packaged ice sources are listed in the plan.

2. The South Post relies on two wells to supply water for the distribution system. If one wellfield becomes unusable due to contamination, it is reasonable to assume that the other wellfield will still be usable.

3. If the North Post Wells tests positive for bacterial contamination, permanent chlorination equipment is provided at the pump house.

Key coordinators and contacts for implementing the contingency plan are listed below:

Fort McCoy Water & Wastewater Branch Chief Contact: Michael Miller Phone: 608.388.6546

Wisconsin Department of Natural Resources Contact:

Phone:

Alex Avalos 608.790.5907

Wisconsin Rural Water Association Phone: 715.344.7778

9 Management Plan NR 811.12 (6) (i)

9.1 Wellhead Protection Area

It is recommended that the well site boundaries be established with a minimum lot size of 100 feet by 100 feet, centered on each well. This boundary will be designated on Fort McCoy’s internal mapping to preserve the site immediately adjacent to each well.

9.2 Separation Distances

The minimum separation distances as specified in Wis. Adm. Code § NR 811.12 (5) (d) shall be maintained under the Management Plan:

4. Ten feet between a well and an emergency or standby power system that is operated by the same facility which operates the well and that has a double wall above ground storage tank with continuous electronic interstitial leakage monitoring.

5. Fifty feet between a well and a storm sewer main or a sanitary sewer main where the sanitary sewer main is constructed of water main class materials and joints.

6. Two hundred feet between a well and any sanitary sewer main not constructed of water main class materials, sanitary manhole, lift station, one or 2 family residential heating fuel oil underground storage tank or above ground storage tank or POWTS treatment tank or holding tank component and associated piping.

7. Three hundred feet between a well and any farm underground storage tank system or other underground storage tank system with double wall and with electronic interstitial monitoring for the system, which means the tank and any piping connected to it.

Three hundred feet between a well and any farm above ground storage tank with double wall, or single wall tank with other secondary containment and under a canopy; other above ground storage tank system with double wall, or single wall tank with secondary containment and under a canopy and with electronic interstitial monitoring for a double wall tank or electronic leakage monitoring for a single wall tank secondary containment structure.

These requirements apply to tanks containing gasoline, diesel, bio-diesel, ethanol, other alternative fuel, fuel oil, petroleum product, motor fuel, burner fuel, lubricant, waste oil, or hazardous substances.

8. Four hundred feet between a well and a POWTS dispersal component with a design capacity of less than 12,000 gallons per day, a cemetery or a storm water retention or detention pond.

9. Six hundred feet between a well and any farm underground storage tank system or other underground storage tank system with double wall and with electronic interstitial monitoring for the system, which means the tank and any piping connected to it; any farm above ground storage tank with double wall, or single wall tank with other secondary containment and under a canopy or other above ground storage tank system with double wall, or single wall tank with secondary containment and under a canopy; and with electronic interstitial monitoring for a double wall tank or electronic leakage monitoring for a single wall tank secondary containment structure. These requirements apply to tank containing gasoline, diesel, bio-diesel, ethanol, other alternative fuel, fuel oil, petroleum product, motor fuel, burner fuel, lubricant, waste oil, or hazardous substances.

10. One thousand feet between a well and land application of municipal, commercial, or industrial waste; the boundaries of a landspreading facility for spreading of petroleum-contaminated soil regulated under ch. NR 718 while that facility is in operation; agricultural, industrial, commercial or municipal waste water treatment plant treatment units, lagoons, or storage structures; manure stacks or storage structures; or POWTS dispersal component with a design capacity of 12,000 gallons per day or more.

11. Twelve hundred feet between a well and any solid waste storage, transportation, transfer, incineration, air curtain destructor, processing, wood burning, one time disposal or small demolition facility; sanitary landfill; any property with residual groundwater contamination that exceeds ch. NR 140 enforcement standards; coal storage area; salt or deicing material storage area; any single wall farm underground storage tank or single wall farm above ground storage tank or other single wall underground storage tank or above ground storage tank that has or has not received written approval from the department of safety and professional services or its designated Local Program Operator under s. ATCP 93.110 for a single wall tank installation. These requirements apply to tanks containing gasoline, diesel, bio-diesel, ethanol, other alternative fuel, fuel oil, petroleum product, motor fuel, burner fuel, lubricant, waste oil, or hazardous substances; and bulk pesticide or fertilizer handling or storage facilities.

10 Selected References Brown, B.A. (1988). Bedrock Geology West-Central Sheet. Wisconsin Geologic and Natural History Survey Map 88-7. http://wisconsingeologicalsurvey.org/pdfs/M104_web.pdf

Miller, Michael L. Emergency Chlorination Plan for Fort McCoy North Post Distribution System.

June 30, 2017.

Fort McCoy Integrated Natural Resources Management Plan. Directorate of Public Works, Environmental Division. 2012.

Lippelt, I.D., and R.G. Hennings (1981). Irrigable Lands Inventory: Phase I Groundwater and Related Information: Map 6 Wisconsin Geological and Natural History Survey Map and Publications Sales Office.

Miller, Michael L. Water System Emergency Response Plan. August 10, 2012/annual review January 12, 2017.

Miller, Michael L. Water Conservation Plan. Fort McCoy, Wisconsin.

Wellhead Protection Study Fort McCoy, Monroe County, Wisconsin. RUST Environmental & Infrastructure. November 1994.

Wisconsin Department of Natural Resources (WDNR) Bureau of Drinking Water and Groundwater. A Template for Preparing Wellhead Protection Plans for Municipal Wells. January 2000/updated code references July 2012. PUBL DB-053-00.

Wisconsin Department of Natural Resources (WDNR) Bureau for Remediation and Redevelopment Tracking System (BRRTS) on the Web (BOTW). Accessed 04/27/2018. http:// dnr.wi.gov/topic/Brownfields/botw.html

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Figure

3535 VADNAIS CENTER DR.

ST. PAUL, MN 55110

PHONE: (651) 490-2000

FAX: (888) 908-8166

TF: (800) 325-2055

www.sehinc.com

Site Location Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR

Project: USAMC 143499 Print Date: 4/25/2018

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

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3535 VADNAIS CENTER DR.

ST. PAUL, MN 55110

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TF: (800) 325-2055

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North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

Project: USAMC 143499

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR Wisconsin Geologic and Natural History Survey (WGNHS, September 1981)

Print Date: 4/25/2018

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\D at a\ te st \n ot pr oj ec tre la te d\ ftM cc oy _W

H P

P \9

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IS

\M

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P \N or ht

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Figure

North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

Project: USAMC 143499

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR Wisconsin Geologic and Natural History Survey (WGNHS, September 1981)

Print Date: 4/27/2018

Fort McCoy - North Post Well Location

Zone Of Influence Well 24 - 1300 ft ZOI

Well 25 - 1300 ft ZOI

Well 27 - 1100 ft ZOI

Well 28 - 1200 ft ZOI

Well 29 - 1500 ft ZOI

Well 30 - 1300 ft ZOI

Legend

0 650325

Recharge Area / Capture Area

Flagpole Rd

10th AveEaton Rd

TSt

Co un ty Hi gh wa yE

O St

DentonAve

BivouacRd

14th Ave

S S t

EdgewoodAve

13th Ave 12th Ave

Eclipse Ave thL n

W St

X St

Eden Ave

Y St

P St

DerbyAve

9th Ave

Edgewa te rA v e

Fla v o neRd

K St

T Cir

Eg ret

Av e

Egret Ave

11th Ave

Elder

Rd

8th Ave

17th Dr

17t hDr

Bronze Ct Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

3535 VADNAIS CENTER DR.

ST. PAUL, MN 55110

PHONE: (651) 490-2000

FAX: (888) 908-8166

TF: (800) 325-2055

www.sehinc.com

Pa th

: S :\K

O \M

\M ct o0 \1

8\

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Figure

North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

Project: USAMC 143499

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR Wisconsin Geologic and Natural History Survey (WGNHS, September 1981)

Print Date: 4/27/2018

Fort McCoy - North Post Well Location

Recharge Area Well 24 RA

Well 25 RA

Well 27 RA

Well 28 RA

Well 29 RA

Well 30 RA

Legend

0 1,600800

Feet

Groundwater Divide (as depicted in Figure 02)

Groundwater Flow

Groundwater Flow

Groundwater Flow

Groundwater Flow

Groundwater Flow

Model Grid and Boundary Conditions

282725

9.3

954.48

2.6

5.9

9.2 872.48

951.2

879.04875.76

882.32 885.6

947.92

888.88 892.16

941.36

938.08

934.8

931.52

944.64

928.24

895.44

924.96

898.72

921.68 918.4

905.28

908.56

915.12911.84

Copyright:© 2013 National Geographic Society, i-cubed

3535 VADNAIS CENTER DR.

ST. PAUL, MN 55110

PHONE: (651) 490-2000

FAX: (888) 908-8166

TF: (800) 325-2055

www.sehinc.com

Pa th

: S :\K

O \M

\M ct o0 \1

8\

_G

IS

\D at a\ te st \n ot pr oj ec tre la te d\ ftM cc oy _W

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\M

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P \N or ht

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W H

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m xd

Figure

North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

Project: USAMC 143499

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR Wisconsin Geologic and Natural History Survey (WGNHS, September 1981)

Print Date: 4/27/2018

Fort McCoy - North Post

Well Location

Upper La Crosse Watershed Boundary

River Boundaries

5 Year Time of

10 Year Time of

15 Year Time of

1,200 ft radius (Wisconsin WHP rule minimum)

Model Layer 1 Contours

Model Grid

Legend

0 2,9001,450

Feet

Tarr Creek

Squ aw

Rive r

Wellhead Protection Area

XRd

Eaton Rd

O St

13th Ave

Bivouac Rd

12th Ave

14th Ave

10th Ave

Edgewood Ave

S S t

Eclipse Ave thL n

W St

X St

Eden Ave

Y St

P St

Edgewa te r Av e

K St

Motor Way

9th Ave

8th Ave

T Cir

TSt

11th Ave

Co un ty Hi gh wa y E

17th Dr

Fireworks Ave

17t h Dr

Bronze Ct

Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

3535 VADNAIS CENTER DR.

ST. PAUL, MN 55110

PHONE: (651) 490-2000

FAX: (888) 908-8166

TF: (800) 325-2055

www.sehinc.com

Pa th

: S :\K

O \M

\M ct o0 \1

8\

_G

IS

\D at a\ te st \n ot pr oj ec tre la te d\ ftM cc oy _W

H P

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\M

X D s\ W

H P

P \N or ht

Po st

W H

P P

\P D

Fs \F ig ur e0 6.

m xd

Figure

North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

Project: USAMC 143499

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR Wisconsin Geologic and Natural History Survey (WGNHS, September 1981)

Print Date: 5/4/2018

Fort McCoy - North Post

Well Location

Wellhead Protection Area

Parcel Boundary

Private Property

Legend

0 1,600800

Potential Contaminant Source Inventory

A. Fort McCoy

BLDG 1010

B. Fort McCoy BLDG 10111

C. Fort McCoy

BLDG 5040

Eaton Rd

10th Ave

14th Ave

O S t

X R d

Bivouac

Rd

Quarters Dr

Edgewood

Ave

S S t

12th Ave

13th Ave

Eclipse Ave th

Ln

W St

X St

Eden Ave

Y St

P StL St

Edgew at er A ve

9th Ave

Motor Way

9th Ave

8th Ave

14th Ave

K St

T Cir

TSt

Bronze Ct

11th Ave

C ou nt y

H ig hw ay

E

Fireworks Ave

17th Dr

17th D r

Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community

3535 VADNAIS CENTER DR.

ST. PAUL, MN 55110

PHONE: (651) 490-2000

FAX: (888) 908-8166

TF: (800) 325-2055

www.sehinc.com

Pa th

: S :\K

O \M

\M ct o0 \1

8\

_G

IS

\D at a\ te st \n ot pr oj ec tre la te d\ ftM cc oy _W

H P

P \9

9_ G

IS

\M

X D s\ W

H P

P \N or ht

Po st

W H

P P

\P D

Fs \F ig ur e0 7.

m xd

Figure

North Post Wells 24, 25, 27, 28, 29, 30 Wellhead Protection Plan Fort McCoy, Wisconsin

Project: USAMC 143499

This map is neither a legally recorded map nor a survey map and is not intended to be used as one. This map is a compilation of records, information, and data gathered from various sources listed on this map and is to be used for reference purposes only. SEH does not warrant that the Geographic Information System (GIS) Data used to prepare this map are error free, and SEH does not represent that the GIS Data can be used for navigational, tracking, or any other purpose requiring exacting measurement of distance or direction or precision in the depiction of geographic features. The user of this map acknowledges that SEH shall not be liable for any damages which arise out of the user's access or use of data provided.

Map by: Msherrill Projection: NAD83 UTM 15N Source: ESRI, SEH USA Topo Maps Wisconsin DNR Bureau of Remediation and Redevelopment

Print Date: 4/27/2018

Closed - Leaking Underground Storage Tank

1/2 mile radius

Fort McCoy - North Post

!. Well Location

Wellhead Protection

Legend

0 1,750875