2020 Salem Annual Report- Final.pdf

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Attached to: H999--Semiannual Landfill Groundwater Monitoring Services
Solicitation number: 36C24621Q0192
Issued by: Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 6

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2020 Annual Groundwater Monitoring Report

Salem Veterans Affairs Medical Center

CDD Landfill Solid Waste Permit #362

Salem, Virginia January 22, 2021

Prepared for:

Salem VAMC Director of Facilities Management C.O. Eric Carpenter 1970 Roanoke Blvd.

Salem, Virginia 24153

Submitted To:

DEQ, BRRO

ATTN: Michael Sexton 901 Russell Dr Salem, Virginia 24153

Submitted By:

Dewberry Engineers Inc.

551 Piney Forest Road Danville, Virginia 24540 434-797-4497

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Salem Veterans Affairs Medical Center Construction/Demolition/Debris Landfill

Permit # 362

2020 Groundwater Annual Report

Prepared By:

This Groundwater Annual Report was prepared in accordance with Section

9VAC20-81-250.E.2.a of the Virginia Solid Waste Management Regulations this report and certify the work presented is accurate and reflects the conditions at the Facility during the 2020 groundwater monitoring year.

__________________________ January 22, 2021 Rachel L. Manning Date Environmental Scientist

__________________________ January 22, 2021 Troy Shelton Date Environmental Department Manager Senior Environmental Scientist

Annual Report Submission Checklist

INCLUDED IN REPORT YES NO

Signature of a qualified groundwater professional X Solid waste facility permit number & facility name X Name of current owner/operator & type of facility X Date LF first began operations and was deemed closed (if applicable) X Date of last waste reciept (if applcable) [2.b] X Identified if site is lined or unlined [2.b] X Identified waste dispoal method (trench fill/area fill, etc.) [2.b] X Total site acreage, and acreage used for waste disposal X Adjoining land use described including any aquifer users [2.c] X Topographic map included as Figure X Figure shows facility location, includes a bar scale, and north arrow X Discuss the type, name & age of the geologic unit(s) on site [2.d] X Description of general site topography [2.d] X Name of nearest permanent water body, perennial stream, etc. [2.d] X Description of the uppermost aquifer [2.d] X Description of the aquifer type (confined vs. unconfined) [2.d] X Date facility entered detection or phase I monitoring [2.b] X Date facility entered assessment or phase II monitoring [2.b] X Identified if the facility monitors groundwater under a variance X Identified the dates of any groundwater variance approvals X Approval date for wetlands demonstration (if applicable) NA Identified if all monitoring wells were sampled during the year [2.e] X Identified reasons for failure to sample (if applicable) [2.e] NA Identified if any monitoring wells have been abandoned [2.e] X Included network performance certification statement [2.e] X Identified groundwater sampling dates during past year [2.f] X Included site plan drawing as Figure [2.h] X Figure contains current topographic contours X Figure contains facility and waste management unit boundaries X Figure includes all monitoring wells X Figure includes potentiometric surface contours X Figure includes groundwater flow direction arrows X Figure includes all surface water bodies X Figure includes all structures on site, a bar scale, and north arrow. X Listing of groundwater elevation readings in past year [2.h] X Table of historical groundwater elevation data as Appendix X Calculated rate of groundwater flow (distance/year) [2.h] X Flow rate calculations included as Appendix X Identified the name of the analytical laboratory [2.h] X Identified whether the lab is DCLS Certified X Identified type of analytical methods used X Identified those constituents above the LOD and LOQ X Identified if verification sampling was used during any event X Identified statistical methods used to analyze groundwater data X Identified any SSI's noted during prior year of monitoring X Table of prior detected constituent concentrations in each well [2.g] X Field data sheet copies included as Appendix X Laboratory results & certificates of analysis as CDROM in Appendix X Included historical summary of laboratory results in Appendix X Full list of references X Copy of this QA/QC checklist X

Annual Report Submission Checklist, DEQ Form ARSC-01

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Salem Veterans Affairs Medical Center CDD Landfill 2020 Annual Report

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TABLE OF CONTENTS PAGE

1. EXECUTIVE SUMMARY

2. INTRODUCTION

2.1 Purpose

2.2 Limitations

2.3 Definitions & Acronyms

3. SITE DESCRIPTION

3.1 Site Background

3.2 Physical Setting

3.3 Aquifer Recognition

3.3.1 Site Geology

3.3.2 Soils

3.3.3 Aquifer Characteristics

3.4 Monitoring History

3.4.1 Phase II Groundwater Monitoring

3.4.2 Groundwater Protection Standards

3.4.3 Transition to Phase I Monitoring

3.4.4 First Determination Monitoring

3.5 Variances or Other Director Approvals

3.6 HB 2471 Wetland Requirements

3.7 Monitoring Well Network

4. HYDROLOGIC EVALUATION

4.1 Annual Review of Monitoring Network

4.2 Groundwater Flow Direction

4.3 Groundwater Flow Rate Calculation

4.3.1 Darcy’s Velocity

4.3.2 Average Linear Velocity

5. GROUNDWATER EVALUATION

5.1 Sampling Events

5.2 Laboratory Procedures

5.3 Detections of Inorganic Constituents

5.4 Detections of Organic Constituents

5.5 Blank Quantified Data

5.6 Verification Events

5.7 Review of Prior Detections

6. STATISTICAL EVALUATION

6.1 Methodology

6.2 Discussion of Verified Exceedances

7. CONCLUSIONS

7.1 Summary of Findings

7.2 Recommended Actions

8. REFERENCES

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LIST OF FIGURES

Figure 1 USGS Site Location Map Figure 2 Facility Site Plan Figure 3 2020 First Semiannual Potentiometric Map Figure 4 2020 Second Semiannual Potentiometric Map

LIST OF APPENDICES

Appendix I Historical Groundwater Elevation Summary Appendix II Average Linear Velocity Calculations Appendix III Field Book Documentation Appendix IV Laboratory VELAP Certification Appendix V Semiannual Detection Summaries Appendix VI Analytical Laboratory Reports and Chain of Custody Appendix VII Historical Detection Summary Appendix VIII Statistical Worksheets and Graphs

LIST OF TABLES

Table 1 2020 Groundwater Elevations Table 2 2020 Semiannual Sampling Schedule Table 3 2020 Inorganic Detections Table 4 2020 1st Semi Annual Verification Event Table 5 2020 2nd Semi Annual Verification Event

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1. EXECUTIVE SUMMARY

Section 9VAC20-81-250.E.2.a of the Virginia Solid Waste Management Regulations (VSWMR) requires the Salem Veterans Affairs Medical Center (VAMC) Construction / Demolition / Debris (CDD) Landfill (Facility) to prepare an Annual Report within 120 days of the issuance of the analytical results from the last sampling event, demonstrating compliance with the groundwater monitoring requirements for solid waste landfills, including any proposed actions that may be needed to bring the Facility into compliance with the VSWMR. As of October 2020, the Facility has completed the semiannual groundwater monitoring requirements required by 9VAC20-81- 250.C.2.

The groundwater monitoring network was functioning properly throughout the 2020 groundwater monitoring year. Groundwater flows in a southerly direction within the Facility.

The average seepage velocity for the 2020 groundwater monitoring year was calculated as 19.95 ft/yr.

All groundwater samples were analyzed in accordance with the Environmental Protection Agency (EPA) Test Methods for evaluating Solid Waste, Physical/Chemical Methods, SW-846.

The Facility’s groundwater data has been statistically evaluated utilizing the Sanitas™ Statistical Software. Statistical analysis of the data revealed no prediction limit exceedances.

The information contained within this annual report illustrates that the Salem Veterans Affairs Medical Center CDD Landfill monitoring network has met the requirements of §9VAC20-81- 250.A.3.

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2. INTRODUCTION

The 2020 groundwater annual report is a summary of the groundwater monitoring activities and results produced from groundwater sampling during the 2020 calendar year at the Salem Veterans Affairs Medical Center CDD Landfill in Salem, Virginia.

2.1 Purpose

As per the VSWMR, within 120 days of the issuance of the analytical results from the last yearly sampling event, the permittee shall submit to the Director, an Annual Report accompanied by a signature page and a completed form ARSC-01 [§9VAC20-81-250.E.5.2.a.(1).(b)]. The report shall, at a minimum, contain the technical items listed in §9VAC20-81-250.E.2.a.(2).

The purpose of the Annual Report is to demonstrate compliance with the groundwater monitoring requirements for a solid waste landfill or propose such actions as may be needed to bring the Facility into compliance with applicable portions of the VSWMR.

The Facility requires monitoring under the first determination monitoring program per §9VAC20-81-250.C.2 of the VSWMR. This report provides documentation and evaluation of the functionality of the groundwater monitoring network to detect a release from the Facility into the hydrogeological regime. The results of the laboratory and statistical analysis performed on groundwater samples collected from the groundwater monitoring network are used to determine if a release occurred during the 2020 monitoring year.

2.2 Limitations

This report was prepared in accordance with §9VAC20-81-250.E.2.a of the VSWMR for landfills and is submitted in a format consistent with the Submission Instructions (SI) for Annual Reports issued by the Department of Environmental Quality (DEQ) December 16, 2011.

This report does not contain technical information pertaining to the Facility submitted under separate cover, such as Alternate Source Demonstrations, Nature and Extent Studies, variance petitions, permit amendments or other such submissions. While such submissions may be referenced throughout the 2020 groundwater annual report, details pertaining to the specific submittals must be obtained from the individual reports referenced.

The contents of this report include: 1) an overall description of the Solid Waste Management Facility, 2) groundwater monitoring network description and evaluation, 3) laboratory analytical results, 4) statistical evaluation of the laboratory analytical results, and 5) a summary of conclusions, recommendations, upcoming monitoring events, and submittals.

The implementation of Amendment 7 replaced §9VAC20-80 with §9VAC20-81. This report is submitted as per §9VAC20-81-250.

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2.3 Definitions & Acronyms

The following words, terms and acronyms when used in this report shall have the following meanings unless the context clearly indicates otherwise:

ACL Alternate Concentration Level asl Above Sea Level Blank Quantified Sample results for specific constituents considered a result of blank contamination will be assumed present at five times the value found in the blank for that constituent. Data is considered a result of blank contamination if the result is less than five times the blank concentration for a particular parameter (or less than ten times the blank concentration for common laboratory constituents such as methylene chloride, acetone, toluene, 2-butanone, and common phthalate esters)

CDD Construction / Demolition / Debris Landfill DCLS Division of Consolidated Laboratory Services DEQ Department of Environmental Quality EPA Environmental Protection Agency Facility Salem Veterans Affairs Medical Center CDD Landfill GPS Groundwater Protection Standard LOD Limit of Detection, also referred to as Minimum Detection Limit (MDL) LOQ Limit of Quantification MCL Maximum Contaminant Level MDL Minimum Detection Limit, also referred to as LOD MW Monitoring Well ND Not detected in laboratory results NOV Notice of Violation PACE Pace Analytical Services, Inc.

PCC Post Closure Care QA/QC Quality Assurance/Quality Control SI Submission Instructions SWP Solid Waste Permit TOC Total Organic Carbon TOX Total Organic Halogens USGS U.S. Geologic Survey VAMC Veterans Affairs Medical Center VELAP Virginia Environmental Lab Accreditation Program VDOT Virginia Department of Environmental Quality vs Seepage Velocity VSWMR Virginia Solid Waste Management Regulations

* Result was blank quantified.

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3. SITE DESCRIPTION

The Facility encompasses a 10.30 acre parcel of which 6.23 acres was utilized for the disposal of demolition waste, construction waste, brush, tree trimmings, stumps, inert waste, and small quantities of asbestos waste.

3.1 Site Background

Facility Name: Salem Veterans Affairs Medical Center CDD Landfill Solid Waste Permit (SWP) Number: 362 Current Owner/Operator: U.S. Department of Veterans Affairs Landfill type: Construction/Demolition/Debris Landfill design: Unlined; 12 disposal trenches, 1 area fill, 1 asbestos area fill Facility began waste acceptance: Prior to July 16, 1982 (date of original permit) Date of last receipt of waste: 1990 Date of final regulatory closure: May 21, 1998

3.2 Physical Setting

Facility Latitude/Longitude: N37°16’24”, W80°00’31”

USGS Quadrangle: Salem, Virginia 2010 (Figure 1) Facility Location: Located on Peters Creek Road, southeast of Salem VA

Medical Hospital complex Facility Acreage: ±10.30-acre tract Facility Elevation Range: 980 feet at the northern property border to 960 feet at the southern end Distance to water bodies: Approximately 500 feet north of the Roanoke River Surrounding land use: VAMC property, commercial and industrial, major road right-of-way, railroad; according to the City of Salem and Roanoke County GIS data base, the surrounding and adjacent properties are serviced by public water and do not utilize groundwater.

Residential potable water supply: Public Water Service Authority

551 Piney Forest Rd.

Danville VA, 24540

(434) 797‐4497

Figure 1: USGS Site Location Map Salem Veterans Medical Center CDD Landfill

USGS Quadrangle: Salem, VA 2016

Facility Location:

37°16’24” N 80°00’31” W

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3.3 Aquifer Recognition

3.3.1 Site Geology

The Facility is located in the highly folded and faulted Valley and Ridge Geologic Province of Virginia. In this region, thrusting to the northwest has displaced older geologic formations over younger ones. The Facility is situated on top of the overthrust block of the Max Meadows Fault, which outcrops approximately 2.3 miles north of the site. The Max Meadows Thrust Sheet is believed to be composed of a series of small imbricated fault blocks which are repeated over the entire width of the thrust sheet (Amato, 1974). Based on published geology of the region, the Facility overlies the Cambrian aged Rome Formation which is thrusted over the slightly younger Elbrook Formation.

3.3.2 Soils

Two (2) soil types are found at the site according to the USDA “Soil Survey of Roanoke County and the Cities of Roanoke and Salem, Virginia:”

1. 52 – Udorthents – Urban Land Complex. The Udorthents soil type consists of material that has been graded, cut, and filled, or otherwise disturbed during the growth of urban areas and during highway construction.

2. 8A – Combs loam, 0 to 2 percent slopes. The Combs soil type is nearly level, very deep, and well drained. The soil is occasionally flooded and is located on flood plains along streams and rivers.

3.3.3 Aquifer Characteristics

Groundwater is unconfined in the shallow aquifer. The uppermost aquifer is characterized by a continuum of weathered soil residuum grading downward to secondary porosity of shallow dolomite and shale bedrock. Groundwater in the uppermost aquifer underlying the Facility is observed at relatively shallow depths below ground surface. Groundwater typically flows from a potentiometric high, located north of the Facility, towards the southeast.

3.4 Monitoring History

The Facility ceased accepting construction and demolition debris in 1990. The Facility began Phase I groundwater monitoring at the Facility in 1992. The Landfill cap was installed in 1993-

94. Due to the proposed routing of the Peters Creek Road extension through the landfill compliance boundary, the official closure was delayed until May 21, 1998. The final Peters Creek Road routing and construction resulted in the Virginia Department of Transportation (VDOT) abandoning the original route through the landfill and placing the road right-of-way immediately adjacent to the compliance boundary along the southeast corner of the landfill closure cap.

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3.4.1 Phase II Groundwater Monitoring

The Facility began Phase II monitoring in September 1995, due to reported parameter concentrations exceeding background limits. Phase II background sampling events were completed in August of 1998 and submitted August 31, 1998 in the Groundwater Background Monitoring and Statistical Report, prepared by Dewberry. Four (4) background sampling events for the former VSWMR Appendix 5.3 parameters were completed in December 1999. The results of the Phase I monitoring in 1999 resulted in the Facility remaining under the Phase II Groundwater Monitoring Program.

As a result of adding a new up-gradient well MW-1B to the monitoring well network in 1998, background for the new up-gradient well had to be established from thirteen (13) background groundwater sampling events. Twelve (12) of the thirteen (13) background samples were analyzed for constituents included in the VSWMR Phase I list and Appendix 5.3. The third background sampling event in the series of thirteen (13) was analyzed for the full set of parameters listed in Table 5.1 of the VSMWR. The remaining ten (10) background sampling events for MW-1B included analyses for the former Phase I parameter list, Appendix 5.3 parameters, and Table 5.1 detects.

The Phase II Monitoring Program was changed with the Amendment II and III of the VSWMR.

As required by the VSWMR amendments, facilities in Phase II monitoring were required to analyze samples for the Table 5.5 parameter suite. The Table 5.5 parameters suite included several trace elements that were not included in the previous target analyte list, including antimony, beryllium, cobalt and tin.

With the discontinuance of monitoring sodium (i.e. sodium was included in the pre-2001 Phase II program) no constituent concentrations were observed above background values. Therefore, the Facility was eligible to return to Phase I monitoring. DEQ correspondence dated July 17, 2001 stated that the discontinuance of monitoring sodium may allow the Facility to revert to the Phase I program. To further support returning to the Phase I monitoring program, none of the monitored constituents from groundwater samples collected at the Facility throughout the 2001 groundwater monitoring year were above the statistically computed background levels. As a result of the 2001 groundwater sampling results, the Facility notified DEQ of its intention to return to the Phase I groundwater monitoring program.

As per the VSWMR, in order to return to the Phase I monitoring program, two (2) consecutive Table 5.1 groundwater sampling events were required to determine if the concentrations of all Table 5.1 constituents were at or below background values. The Facility did not have sufficient background data for the Table 5.1 trace elements. Prior to the May 23, 2001 promulgation of Amendment II of the VSWMR, the Facility had only collected background for the former VSWMR Appendix 5.3 constituents, which did not include trace elements antimony, beryllium and cobalt. In addition, there was insufficient data available to compute an upper prediction limit for tin and mercury. Additional groundwater sampling events were conducted semiannually to establish a sufficient background data set with which to calculate upper prediction limits for tin and mercury.

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3.4.2 Groundwater Protection Standards

In correspondence dated April 24, 2000, DEQ requested the Facility establish Groundwater Protection Standards (GPS) as required by 9VAC20-80-260.D.6.e.(5). Establishment of GPS required a major permit amendment complete with proposed GPS and an updated Groundwater Module which were prepared and completed by Dewberry and submitted to DEQ on June 16, 2000. The draft permit amendment entered DEQ’s technical review process and was revised to incorporate DEQ’s comments. A revised edition was submitted for review on May 18, 2001.

The second and final revision was submitted July 30, 2002. The major permit amendment, including proposed GPS for the Facility, was approved in DEQ corresponded dated January 22, 2003.

Due to continual updates to the Alternate Concentration Limits (ACL) Table, DEQ developed a statewide variance process that allowed Facilities to petition a variance to utilize the updated ACLs or to include ACLs for those constituents for which there is no promulgated Maximum Contaminant Level (MCL) or for which background data is unavailable. For the Facilities that utilized the state-wide ACL variance, no future variance request would be necessary to update or replace the Revised ACL Tables as issued by DEQ. The Facility submitted a Statewide ACL Variance Request to DEQ on January 24, 2007.

3.4.3 Transition to Phase I Monitoring

As per DEQ correspondence dated July 31, 2006, the Facility continued monitoring under the Phase II monitoring program in 2006 and 2007.

Based upon two (2) consecutive years (2006 and 2007) of semiannual Phase II monitoring demonstrating no statistically significant differences in down-gradient well results compared to background, DEQ concurred with the Facility’s request to return to Phase I groundwater monitoring as stated in DEQ correspondence dated February 21, 2008.

Groundwater monitoring completed during calendar year 2008 entailed semiannual sampling events for Phase I indicator parameters: pH, specific conductivity, total organic carbon (TOC) and total organic halogens (TOX). Background data for the statistical comparisons of indicator parameters included monitoring results from the background well MW-1B from 1998 through 2008.

3.4.4 First Determination Monitoring

Chapter 81, also referred to as Amendment 7, of the VSWMR became effective on March 16, 2011. This Chapter recodified the VSWMR (9VAC20-80 became 9VAC20-81). The Phase I monitoring program for CDD Landfills was redeveloped and referred to as First Determination Monitoring. Changes to the CDD landfill regulations prompted the requirement to monitor each well in the compliance network for analysis of the constituents listed in Table 3.1 Column A on at least a semiannual basis and compare the monitoring results to the established background

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P:\50110578\Adm\Reports\2020 Salem VAMC CDD Landfill Annual Report.doc data. The indicator parameter list of pH, specific conductance, TOC and TOX was discontinued with the implementation of Amendment 7.

3.5 Variances or Other Director Approvals

A variance petition to allow use of ACLs, in lieu of background data, as GPS was approved on January 7, 2010. This variance allows automatic updating for REAMS-based ACL values. This variance supersedes an earlier variance for use for ACLs as GPS approved on January 7, 2003.

The Facility, under First Determination Monitoring, no longer compares the analytical results to the GPS, rather the reported detections are compared to the Facility background.

3.6 HB 2471 Wetland Requirements

The Facility is not subject to the requirements of H.B. 2471.

3.7 Monitoring Well Network

The groundwater monitoring network consists of five (5) groundwater monitoring wells. MW-1B is the Facility’s up-gradient well. The down-gradient compliance wells are: MW-2A, MW-3A, MW-4 and MW-5.

The original up-gradient well MW-1 did not provide sufficient groundwater for sample collection. Structural failure of the screen in the previous up-gradient well MW-1A resulted in the installation of the current up-gradient and background well, MW-1B, on January 23, 1998.

The previous up-gradient wells were properly abandoned.

Original down-gradient wells MW-2 and MW-3 failed to provide adequate samples and were replaced by current wells MW-2A and MW-3A. MW-2A, MW-3A and MW-4 were installed in January 1992. MW-5 was installed in February 1993.

All monitoring wells were installed in the uppermost aquifer. The monitoring wells were constructed of 2-inch ID Schedule 40 threaded PVC pipe with 0.01-inch slotted well screens.

The elevation of the top of the screened interval was selected to adequately monitor the uppermost aquifer. The annular space between the borehole and the well screen was then packed with sand to a minimum of 2-feet above the top of each screen. A minimum 2-foot bentonite pellet seal was placed over the sand. Following hydration of the bentonite, the annular spaces were further backfilled with cement slurry.

The Facility site plan depicting the spatial relationships between monitoring well locations and various site boundaries and landmarks is presented in Figure 2.

SHEET NO.

KEY PLAN

SEAL

SCALE

APPROVED BY

CHECKED BY

REVISIONS

TITLE

DRAWN BY

DATE

PROJECT NO.

Dewberry Engineers Inc.

551 PINEY FOREST RD

DANVILLE, VA 24540

Phone: 434-797-4497 Fax: 434-797-4341

S A

V A

. M E

A L

C E

R C

E D

C O

N S

O N

E M

N D

E B

L A

N D

E S

M , V

Figure 2 Salem VAMC CDD Landfill

Site Location Map

1 1OF

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EIP

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24I ELM

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( IN FEET )

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GRAPHIC SCALE

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RIGHT OF WAY

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NORFOLK AND SOUTHERN RAILROAD

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COMPUTED POINT

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%%UREFERENCE:

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1. SALEM VA MEDICAL CENTER

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DEBRIS LANDFILL CLOSURE

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BY: DEWBERRY & DAVIS

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DATED: JUNE 12, 1992

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SHEETS 1-6

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VETERANS ADMINISTRATION

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ELEVATIONS BASED ON EXISTING

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POINT LOCATION TABLE

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DESCRIPTION

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NORTHING

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MW2A

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MW4

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GV-LANDFILL GAS VENT

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STORM DRAIN MANHOLE

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2. SALEM VA MEDICAL CENTER

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BY: DEWBERRY & DAVIS

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DATED: FEB. 2, 1998

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FILE: V1809B

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SHOWING MONITORING WELLS AND OTHER FEATURES

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DEBRIS LANDFILL SITE

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ASPHALT ROAD

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BUILDING #147

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PETERS CREEK ROAD EXTENSION

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PLAT NORTH - SEE REF. 1

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POND

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BOUNDARY

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BOUNDARY

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LEGEND:

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MONITORING WELL, NUMBER, GROUND WATER ELEVATION **

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TOPOGRAPHIC ELEVATION (10' INTERVAL)

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TOPOGRAPHIC ELEVATION (2' INTERVAL)

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AutoCAD SHX Text January 2021

AutoCAD SHX Text 50110578

Salem Veterans Affairs Medical Center CDD Landfill 2020 Annual Report

11 January 22, 2021

P:\50110578\Adm\Reports\2020 Salem VAMC CDD Landfill Annual Report.doc

4. HYDROLOGIC EVALUATION

4.1 Annual Review of Monitoring Network

The monitoring well network functioned as designed during the 2020 monitoring year. The up-gradient well, and the down-gradient compliance wells continue to represent the quality of groundwater at the disposal unit boundary.

4.2 Groundwater Flow Direction

The static water elevations indicate groundwater flows in a southerly direction at the Facility.

Table 1 provides a summary of the groundwater elevation data in feet above sea level (ft/asl) collected during the two (2) semiannual monitoring events conducted during the 2020 monitoring year. Appendix I provides a historical summary of the groundwater elevation data for the Facility.

Table 1: 2020 Groundwater Elevations

Monitoring Well Groundwater Elevations (ft/asl) April 2020 September 2020

MW-1B 961.41 954.10

MW-2A 957.71 952.30

MW-3A 957.01 951.89

MW-4 953.53 948.92

MW-5 959.16 953.07

The groundwater surface contours illustrated in Figures 3 and 4 are based on the static water levels taken during each semiannual groundwater sampling event during the 2020 groundwater monitoring year.

Contours were developed using standard hydrogeological practice and professional judgment.

Based on these results, the monitoring network was functioning properly throughout the 2020 groundwater monitoring year.

SHEET NO.

KEY PLAN

SEAL

SCALE

APPROVED BY

CHECKED BY

REVISIONS

TITLE

DRAWN BY

DATE

PROJECT NO.

Dewberry Engineers Inc.

551 PINEY FOREST RD

DANVILLE, VA 24540

Phone: 434-797-4497 Fax: 434-797-4341

S A

V A

. M E

A L

C E

R C

E D

C O

N S

O N

E M

N D

E B

L A

N D

E S

M , V

Figure 3 2020 First Semiannual

Potentiometric Map

1 1OF

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%%UREFERENCE:

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1. SALEM VA MEDICAL CENTER

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DEBRIS LANDFILL CLOSURE

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BY: DEWBERRY & DAVIS

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DATED: JUNE 12, 1992

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SHEETS 1-6

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VETERANS ADMINISTRATION

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%%UNOTE:

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%%UBENCHMARK:

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ELEVATIONS BASED ON EXISTING

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WATER TANK BASE

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ELEVATION=1084.00 V.A.HOSPITAL

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AutoCAD SHX Text 4570.30

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AutoCAD SHX Text 4606.32

AutoCAD SHX Text 4586.76

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AutoCAD SHX Text 5055.67

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AutoCAD SHX Text 5495.50

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AutoCAD SHX Text 5266.14

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AutoCAD SHX Text 5461.22

AutoCAD SHX Text 5472.61

AutoCAD SHX Text 4928.65

AutoCAD SHX Text 5477.89

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GV-LANDFILL GAS VENT

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GW-LANDFILL GAS WELL

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STORM DRAIN MANHOLE

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YARD INLET

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2. SALEM VA MEDICAL CENTER

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BY: DEWBERRY & DAVIS

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DATED: FEB. 2, 1998

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FILE: V1809B

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SHOWING MONITORING WELLS AND OTHER FEATURES

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DEBRIS LANDFILL SITE

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ASPHALT ROAD

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BUILDING #147

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PETERS CREEK ROAD EXTENSION

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PLAT NORTH - SEE REF. 1

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POND

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TOP OF IRON ROD

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ELEVATION=984.66

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LANDFILL COMPLIANCE

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BOUNDARY

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BOUNDARY

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LEGEND:

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MONITORING WELL, NUMBER, GROUND WATER ELEVATION **

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ESTIMATED GROUND WATER CONTOUR/ELEVATION **

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TOPOGRAPHIC ELEVATION (10' INTERVAL)

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TOPOGRAPHIC ELEVATION (2' INTERVAL)

AutoCAD SHX Text ** THE GROUNDWATER CONTOURS DEPICTED ON THIS MAP ARE IDEALIZED, PROVIDING A GENERAL DESCRIPTION OF THE GROUNDWATER

AutoCAD SHX Text GRADIENT ACROSS THE ENTIRE FACILITY. THE GROUNDWATER CONTOURS DEPICTED ARE SOLELY BASED ON A VERY LIMITED NUMBER

AutoCAD SHX Text OF MONITORING WELL WATER ELEVATIONS, AND THE PIEZIOMETRIC CONTOURS SHOWN, HAVE NOT BEEN MANUALLY ADJUSTED TO

AutoCAD SHX Text THE LANDFILL TOPOGRAPHIC SURFACE. THEREFORE, AREAS OF THE LANDFILL WHERE ABRUPT OR GREAT CHANGES IN TOPOGRAPHY

AutoCAD SHX Text EXIST, PIEZIOMETRIC INACCURACIES MAY BE PREVALENT. THESE GROUNDWATER CONTOUR MAPS ARE PROVIDED AS A GENERAL

AutoCAD SHX Text DESCRIPTION OF FACILITY GROUNDWATER GRADIENTS AND SHOULD NOT BE RELIED UPON AS A BASIS OF LANDFILL DESIGN WITHOUT

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ADDITIONAL GROUNDWATER ELEVATION DATA.

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AutoCAD SHX Text 50110578

AutoCAD SHX Text 5/8/2020

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RLM

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SHEET NO.

KEY PLAN

SEAL

SCALE

APPROVED BY

CHECKED BY

REVISIONS

TITLE

DRAWN BY

DATE

PROJECT NO.

Dewberry Engineers Inc.

551 PINEY FOREST RD

DANVILLE, VA 24540

Phone: 434-797-4497 Fax: 434-797-4341

S A

V A

. M E

A L

C E

R C

E D

C O

N S

O N

E M

N D

E B

L A

N D

E S

M , V

Figure 4 2020 Second Semiannual

Potentiometric Map

1 1OF

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( IN FEET )

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GRAPHIC SCALE

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RIGHT OF WAY

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NORFOLK AND SOUTHERN RAILROAD

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COMPUTED POINT

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%%UREFERENCE:

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1. SALEM VA MEDICAL CENTER

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DEBRIS LANDFILL CLOSURE

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BY: DEWBERRY & DAVIS

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DATED: JUNE 12, 1992

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SHEETS 1-6

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VETERANS ADMINISTRATION

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%%UNOTE:

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%%UBENCHMARK:

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ELEVATIONS BASED ON EXISTING

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WATER TANK BASE

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ELEVATION=1084.00 V.A.HOSPITAL

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POINT LOCATION TABLE

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DESCRIPTION

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NORTHING

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TOP OF PVC

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LGW3

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AutoCAD SHX Text 4570.30

AutoCAD SHX Text 4679.48

AutoCAD SHX Text 4606.32

AutoCAD SHX Text 4586.76

AutoCAD SHX Text 4600.05

AutoCAD SHX Text 4578.92

AutoCAD SHX Text 4607.34

AutoCAD SHX Text 5482.32

AutoCAD SHX Text 5039.77

AutoCAD SHX Text 1006.21

AutoCAD SHX Text 968.13

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AutoCAD SHX Text 5055.67

AutoCAD SHX Text 5097.40

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AutoCAD SHX Text 5182.44

AutoCAD SHX Text 5266.14

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GV-LANDFILL GAS VENT

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STORM DRAIN MANHOLE

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YARD INLET

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CHAIN LINK FENCE

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2. SALEM VA MEDICAL CENTER

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BY: DEWBERRY & DAVIS

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DATED: FEB. 2, 1998

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FILE: V1809B

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SHOWING MONITORING WELLS AND OTHER FEATURES

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DEBRIS LANDFILL SITE

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ASPHALT ROAD

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BUILDING #147

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PETERS CREEK ROAD EXTENSION

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PLAT NORTH - SEE REF. 1

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POND

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EIP-EXISTING IRON PIN

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ECM-EX CONC MONUMENT

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EIP

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EIP

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GATE

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%%UBENCHMARK:

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ELEVATION=984.66

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LANDFILL COMPLIANCE

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BOUNDARY

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BOUNDARY

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MONITORING WELL, NUMBER, GROUND WATER ELEVATION **

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ESTIMATED GROUND WATER CONTOUR/ELEVATION **

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TOPOGRAPHIC ELEVATION (10' INTERVAL)

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TOPOGRAPHIC ELEVATION (2' INTERVAL)

AutoCAD SHX Text ** THE GROUNDWATER CONTOURS DEPICTED ON THIS MAP ARE IDEALIZED, PROVIDING A GENERAL DESCRIPTION OF THE GROUNDWATER

AutoCAD SHX Text GRADIENT ACROSS THE ENTIRE FACILITY. THE GROUNDWATER CONTOURS DEPICTED ARE SOLELY BASED ON A VERY LIMITED NUMBER

AutoCAD SHX Text OF MONITORING WELL WATER ELEVATIONS, AND THE PIEZIOMETRIC CONTOURS SHOWN, HAVE NOT BEEN MANUALLY ADJUSTED TO

AutoCAD SHX Text THE LANDFILL TOPOGRAPHIC SURFACE. THEREFORE, AREAS OF THE LANDFILL WHERE ABRUPT OR GREAT CHANGES IN TOPOGRAPHY

AutoCAD SHX Text EXIST, PIEZIOMETRIC INACCURACIES MAY BE PREVALENT. THESE GROUNDWATER CONTOUR MAPS ARE PROVIDED AS A GENERAL

AutoCAD SHX Text DESCRIPTION OF FACILITY GROUNDWATER GRADIENTS AND SHOULD NOT BE RELIED UPON AS A BASIS OF LANDFILL DESIGN WITHOUT

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ADDITIONAL GROUNDWATER ELEVATION DATA.

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LGV11

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PIEZOMETER

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IRF

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IRF

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IRF

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IRF

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MW1B

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SOLAR PANEL BOUNDARY

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MW3A

AutoCAD SHX Text 956.98

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AutoCAD SHX Text 954.10

AutoCAD SHX Text 953.07

AutoCAD SHX Text 952.30

AutoCAD SHX Text 951.89

AutoCAD SHX Text 948.92

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LGV18

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LGW5

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LGW5A

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DATE

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RLM

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TAS

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TAS

AutoCAD SHX Text September 2020

AutoCAD SHX Text 50110578

AutoCAD SHX Text 5/8/2020

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RLM

AutoCAD SHX Text Groundwater flow direction correction

Salem Veterans Affairs Medical Center CDD Landfill 2020 Annual Report

14 January 22, 2021

P:\50110578\Adm\Reports\2020 Salem VAMC…

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File details come from the government source that posted it. Updated Apr 22, 2021.