B.08 LF006 LTM Report Final_rev0.pdf

February 17, 2023

Gary Cox Robins IST, AFCEC/CZOE Restoration Program Manager 380 Robins Parkway - Bldg. # 359 Robins Air Force Base, GA

RE: Draft Final 2022 Long-Term Management Sampling Reports for Sites LF006, LF008, LF015, LF016

Dear Mr. Cox:

The Federal Remediation Branch (FRB) in the North Carolina Division of Waste Management (Division) received the Draft Final 2022 Long-Term Management Sampling Reports for Sites LF006, LF008, LF015, LF016 on January 19, 2023. The Division has the following comments:

• In future reports, please show the flow direction of Stoney Creek on figures.

• Several of the monitoring wells at all four sites have low pH. The 15A NCAC 02L .0202 groundwater quality standard for pH is 6.5-8.5. Typically, there is leeway given if the background pH level is naturally low. This should be addressed in future reports.

• Performance monitoring should continue every five years for the groundwater and surface water locations with the same set of analytical parameters.

Within 30 days of receipt of this letter please ensure to submit a final, non-draft electronic copy of the aforementioned document(s).

If you have any questions, please contact me at tessa.monday@ncdenr.gov.

Sincerely, Tessa R Monday Environmental Engineer Division of Waste Management

FINAL

2022 Long-Term Management Sampling Report for Site LF006

February 2023..

Carolina Group Performance Based Remediation Seymour Johnson Air Force Base, North Carolina

Contract No. FA8903-13-C-0006

Prepared for:

Air Force Civil Engineer Center

Prepared by:

FPM Remediations, Inc.

An Olgoonik Company 181 Kenwood Ave.

Oneida, NY 13421

12120 Shamrock Plaza, Suite 100

Omaha, NE 68154

TABLE OF CONTENTS

2022 LTM Sampling Report for Site LF006 i Seymour Johnson AFB, NC

FA8903-13-C-0006

Section 1 Introduction ..................................................................................................................... 1-1

1.1 Authority .................................................................................................. 1-1

1.2 Purpose and Scope ................................................................................... 1-1

1.3 Report Organization ................................................................................. 1-1

Section 2 Groundwater and Surface Water Monitoring ............................................................... 2-1

2.1 Site Description ........................................................................................ 2-1

2.2 Groundwater and Surface Water Sampling Activities ............................. 2-1

2.3 Groundwater and Surface Water Sampling Results ................................. 2-2

2.4 Investigation Derived Waste .................................................................... 2-3

Section 3 Data Quality Evaluation.................................................................................................. 3-1

3.1 Laboratory Data Quality Review ............................................................. 3-1

3.1.1 General ......................................................................................... 3-1

3.1.2 Data Review Process .................................................................... 3-1

3.1.3 Analytical Result Qualifications .................................................. 3-1

3.1.4 Conclusions of Data Quality Review ........................................... 3-1

Section 4 Conclusions and Recommendations ............................................................................ 4-1

4.1 Conclusions .............................................................................................. 4-1

4.2 Recommendations .................................................................................... 4-1

Section 5 References ...................................................................................................................... 5-1

2022 LTM Sampling Report for Site LF006 ii Seymour Johnson AFB, NC

FA8903-13-C-0006

List of Tables Table 1 Well Construction Details Table 2 Summary of Field Water Quality Parameters Table 3 Summary of Sampling Table 4 Summary of Analytical Data

List of Figures Figure 1 LF006 Site Location Map Figure 2 LF006 Site Map Figure 3 LF006 Monitoring Locations and Groundwater Contour Map Figure 4 LF006 COPC Concentrations in Groundwater

List of Appendices Appendix A Laboratory Reports Appendix B Data Validation Reports Appendix C Field Documentation

2022 LTM Sampling Report for Site LF006 iii Seymour Johnson AFB, NC

FA8903-13-C-0006

List of Acronyms µg/L micrograms per liter FPM FPM Remediations, Inc.

LF006 Landfill Number 4 LTM long-term management NC 2L Standard 15A North Carolina Administrative Code 02L.0202 Groundwater

Quality Standards NCDEQ North Carolina Department of Environmental Quality SJAFB Seymour Johnson Air Force Base SWMU Solid Waste Management Unit SVOC semi-volatile organic compound

URS

USEPA

URS Group, Inc.

United States Environmental Protection Agency

VOC volatile organic compound

SECTIONONE Introduction

2022 LTM Sampling Report for Site LF006 1-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

This Long-Term Management (LTM) Sampling Report provides the results of the groundwater and surface water sampling completed for LF006 (Landfill Number 4) (Solid Waste Management Unit [SWMU] 4) at Seymour Johnson Air Force Base (SJAFB), Goldsboro, North Carolina. The locations of SJAFB and LF006 are shown on Figure 1.

1.1 AUTHORITY

FPM Remediations, Inc. (FPM) has been contracted by the Air Force Civil Engineer Center under Contract No. FA8903-13-C-0006 to complete performance based remediation at SJAFB under the Environmental Restoration Program. URS Group, Inc. (URS) is subcontracted to FPM to complete the contract performance objectives for LF006, and this LTM report has been prepared by URS. The contracted performance objective for LF006 is Optimized Exit Strategy with annual inspections as well as groundwater and surface water monitoring in five year intervals (2017 and 2022). The LTM at SJAFB is being conducted under the Comprehensive Environmental Response, Compensation, and Liability Act. The United States Environmental Protection Agency (USEPA) deferred lead regulatory status for SJAFB to the North Carolina Department of Environmental Quality (NCDEQ).

1.2 PURPOSE AND SCOPE

The purpose of this report is to present the groundwater and surface water sampling activities and analytical results completed in accordance with the approved LTM Design Addendum (FPM/URS, 2015). The final remedy for LF006 (LTM) was designed to maintain protection of human health and the environment through long-term monitoring of groundwater and surface water downgradient of LF006 along with annual landfill inspections. The annual landfill inspections will be completed in December of 2022 and the results will be presented in a separate report.

1.3 REPORT ORGANIZATION

This LTM Sampling Report is organized into the following sections:

Section 1 presents the authority, purpose and scope, and report organization.

Section 2 describes the sampling activities and analytical results.

Section 3 presents the data quality evaluation.

Section 4 presents conclusions and recommendations.

Section 5 presents a list of references cited in the report.

Appendix A includes the analytical laboratory reports.

Appendix B includes the analytical data validation reports.

1 Introduction

SECTIONONE Introduction

2022 LTM Sampling Report for Site LF006 1-2 Seymour Johnson AFB, NC

FA8903-13-C-0006

Appendix C includes the field documentation.

SECTIONTWO Groundwater and Surface Water Monitoring

2022 LTM Sampling Report for Site LF006 2-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

2.1 SITE DESCRIPTION

Site LF006 is a former landfill/hardfill with waste materials left in place. The site is listed on the installation’s Resource Conservation and Recovery Act permit as SWMU 4 and is monitored under the LTM plan approved by the NCDEQ (NCDEQ, 2019).

The site occupies approximately 8 acres and is located in the northern portion of the base, northwest of Collier Avenue and southeast of Stoney Creek (Figure 1). The former landfill was used from 1970 to 1987 for the disposal of general refuse generated on the base (not including refuse from the housing area), miscellaneous industrial chemicals, and ash from the heating plant. From 1987 until the mid-1990s, landfill use was limited to rubble disposal from ground maintenance activities, filled along a slope. The refuse portion of the landfill was operated in trench-and-fill fashion with wastes covered daily.

Much of the former landfill surface has been graded and partially paved with aggregate. A soil cover of at least 2 feet in thickness and consisting primarily of silty sands and clayey sands is present across most of the site. An abrupt scarp rising approximately 20 feet above the floodplain of Stoney Creek marks the northwest edge of the landfill area (URS, 2004). The perimeter of the former landfill in relation to Stoney Creek and other surrounding features is shown on Figure 2.

Current uses for the site include:

• Long-term storage of privately owned vehicles (e.g., recreational camping vehicles, boats, trailers, and older-model cars) within a fenced area near the central portion of the site.

• Open storage of materials used for maintenance, repair, or capital improvements on base(e.g., stockpiles of asphalt, concrete, stone, mulch, soil, and sand). Storage areas are primarily located along the eastern perimeter and in the northern portion of the site.

• Contractor material storage and equipment laydown area.

2.2 GROUNDWATER AND SURFACE WATER SAMPLING ACTIVITIES

During the 2022 sampling event, the water level meter malfunctioned and thus only some water levels were able to be collected. Due to this, the water levels from the 2021 landfill inspections were utilized in their place as the 2021 data is consistent with historical data (URS, 2022). The location of the monitoring well network is shown on Figure 2. Depth-to-water was measured from a surveyed measuring point established on the top of each polyvinyl chloride well casing using an electronic water level probe. Measurements were read to the nearest 0.01 foot and recorded in the field logbook. Depth-to-water measurements were converted to water-level elevation referenced to sea level. Contouring of the water table based on the calculated groundwater elevations is presented on Figure 3. Groundwater contouring indicates a flow direction to the northwest, toward Stoney Creek. Well construction details and depth-to-water measurements for each well are summarized in Table 1. Copies of sample collections field

2 Groundwater and Surface Water

2022 LTM Sampling Report for Site LF006 2-2 Seymour Johnson AFB, NC

FA8903-13-C-0006

sheets on which field measurements and other observations were recorded are included in Appendix C.

Groundwater and surface water sampling were collected at LF006 on 22 March 2022 in accordance with the approved LTM Design Addendum (FPM/URS, 2015). Sampling was completed as follows:

• Groundwater samples were collected from monitoring wells MW-44, MW-45, MW-46, MW-47, MW-49, MW-204, and MW-205.

• Surface water samples were collected from upgradient sample location SW-BKG-LF6 and downgradient sample location SW-BKG-LF8 (Figure 2).

• Groundwater and surface water samples were analyzed for volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), pesticides, and metals.

• Groundwater was also monitored in the field for water quality parameters: temperature, conductivity, pH, dissolved oxygen, oxidation-reduction potential and turbidity.

2.3 GROUNDWATER AND SURFACE WATER SAMPLING RESULTS

The summary of field water quality parameters is presented in Table 2. A summary of sampling is presented in Table 3. A summary of the analytical results is presented in Table 4. Analytical results above respective North Carolina Groundwater Quality Standards (NC 2L Groundwater Standards) is presented in Figure 4.

During the March 2022 sampling event, there was an issue with the samples collected for monitoring wells MW-45 and MW-205 which led to the metal samples for these wells not being analyzed. Reviewing the historical 2017 data for these wells, the metals results did not exceed the NC 2L Groundwater Standards and were consistent with the results for the entire LF006 site

(URS, 2018).

A summary of the sampling results by analytical method is as follows:

• VOCs – One VOC, cis-1,2-Dichloroethene, was detected in two of the seven monitoring wells. Both results were reported below the NC 2L Groundwater Standards (70 micrograms per liter [µg/L]), and no cis-1,2-Dichloroethene was detected in samples collected from Stoney Creek.

• SVOCs – There were no SVOC detections at any monitoring point.

• Pesticides – There were no pesticides detections at any monitoring point.

• Metals – Three analytes (antimony, cobalt, iron, and manganese) were detected at concentrations above the NC 2L Groundwater Standards, but consistent with historical sampling data from the site.

− Antimony was detected in the two surface water samples collected at concentrations above the NC 2L Groundwater Standard of 1 µg/L. However, the concentrations were

2022 LTM Sampling Report for Site LF006 2-3 Seymour Johnson AFB, NC

FA8903-13-C-0006

below the Environmental Protection Agency Nationally Recommended Water Quality Criteria of 5.6 µg/L. No background concentrations have been established for antimony at SJAFB.

− Cobalt was detected in the one groundwater sample collected at a concentration above the NC 2L Groundwater Standard of 1 µg/L. Common elemental metals in the groundwater are documented to occur at widely varying concentrations on base and in coastal sediments (USACE, 2002).

− Iron was detected in all five groundwater samples analyzed at concentrations above the NC 2L Groundwater Standard of 300 µg/L. Common elemental metals in the groundwater are documented to occur at widely varying concentrations on base and in coastal sediments (USACE, 2002). The concentrations of iron in the surface water samples collected from Stoney Creek were above the NC 2L Groundwater Standard.

− Manganese was detected at one of the groundwater samples above the NC 2L Groundwater Standard of 50 µg/L and the background concentrations for manganese (65 µg/L). A comparison of concentrations reported in both upstream and downstream surface water samples suggest there is no significant source of manganese discharge from LF006 groundwater or impacting Stoney Creek. Manganese is not considered to be a contaminant of potential concern at LF006 due to the fact that standards for manganese are based on aesthetics for drinking water and the aquifer at LF006 is not currently nor is it expected to be used as a drinking water source (FPM/URS, 2015).

2.4 INVESTIGATION DERIVED WASTE

Aqueous waste generated during the equipment decontamination and purge water collected during groundwater sampling was collected in five-gallon buckets. The water was discharged to an oil/water separator located at the civil engineering wash rack on base. Used personal protective equipment was treated as solid waste and disposed of on base in a trash receptacle.

SECTIONTHREE Data Quality Evaluation

2022 LTM Sampling Report for Site LF006 3-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

3.1 LABORATORY DATA QUALITY REVIEW

3.1.1 General

Groundwater samples collected during the sampling events were submitted to SGS Laboratories in Orlando, Florida. The groundwater samples were analyzed for VOCs by USEPA SW-846 Method 8260D, SVOC by USEPA SW-846 8270E, metals by SW-846 6010D/7470A, and pesticides by SW-846 8081B. A copy of the SGS laboratory packages and a copy of the URS completed data validation checklist are provided in Appendix A and Appendix B, respectively.

3.1.2 Data Review Process

Analytical data were reviewed and validated by URS in accordance with the LTM Design Addendum (FPM/URS, 2015). The data review process included evaluations of the following elements:

• Laboratory case narrative/cooler receipt form

• Sample documentation

• Sample preservation and holding time compliance

• Sample completeness

• Method detection and reporting limits

• Blank contamination

• Laboratory control sample recoveries

• Surrogate compound recoveries

• Matrix spike and matrix spike duplicate recoveries

• Laboratory duplicate results

• Field duplicate results

• Additional qualifications

3.1.3 Analytical Result Qualifications

No qualifications were applied to the analytical results based on the data review findings.

3.1.4 Conclusions of Data Quality Review

The analytical data were found to be acceptable for their intended use based on the data reviews.

Completeness, defined to be the percentage of analytical results judged to be valid, including estimated data, was 100 percent for the events.

3 Data Quality Evaluation

SECTIONFOUR Conclusions and Recommendations

2022 LTM Sampling Report for Site LF006 4-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

4.1 CONCLUSIONS

Samples were collected from seven groundwater monitoring wells and from points upstream and downstream of the landfill in the adjacent surface water body (Stoney Creek). The groundwater and surface water samples were analyzed for VOCs, SVOCs, pesticides, and metals. The sampling results identified two analytes (iron and manganese) in groundwater at concentrations exceeding their NC 2L Groundwater Standards:

• Antimony was not detected above screening levels in the groundwater and the antimony detected in the surface water at LF006 is below the recommended water quality criteria of

5.6 µg/L. Based on the concentrations identified it does not represent an adverse impact to the surface water quality.

• The cobalt detection at MW-46 is consistent with 2017 historical sampling data (URS, 2018). A comparison of the groundwater concentrations reported in both upstream and downstream surface water samples suggest there is no significant source of dissolved-phase constituents discharging from LF006 groundwater to Stoney Creek.

• The manganese detection at MW-46 is consistent with 2017 historical sampling data (URS, 2018). A comparison of the groundwater concentrations reported in both upstream and downstream surface water samples suggest there is no significant source of dissolved-phase constituents discharging from LF006 groundwater to Stoney Creek.

• The iron concentrations reported in samples collected from site groundwater and the surface water in Stoney Creek are consistent with historical sampling data (URS, 2018). A comparison of the iron concentrations in the upstream and downstream surface water samples indicate that groundwater discharging from LF006 to Stoney Creek is not causing adverse impacts to surface water quality.

4.2 RECOMMENDATIONS

Based on the current operations and performance monitoring results, URS recommends the following:

• Performance monitoring should continue every five years for the groundwater and surface water locations with the same set of analytical parameters. The next sampling event will occur in 2027.

4 Conclusions and Recommendations

SECTIONFIVE References

2022 LTM Sampling Report for Site LF006 5-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

FPM/URS. 2015. Long-Term Management Design Addendum, Site LF006 / SWMU 4 / Landfill No. 4, Site LF008 / SWMU 1 / Landfill No. 1, Site LF015 / SWMU 2 / Landfill No. 2, Site LF016 / SWMU 3 / Landfill No. 3, Seymour Johnson Air Force Base, North Carolina. December.

NCDEQ. 2019. State of North Carolina Division of Waste Management Hazardous Waste Management Permit, Seymour Johnson Air Force Base Permit, Permit No.

NC7570024474R2. August.

URS Group, Inc. (URS). 2004. Final Management Plan for Former Landfill Sites (LF-06, LF- 08, LF-15, LF-16), Seymour Johnson Air Force Base, North Carolina. May.

URS. 2018. Final 2017 Long-Term Management Sampling and Annual Site Inspection Report Site LF006, Seymour Johnson Air Force Base, North Carolina. July.

URS. 2022. Final Landfill Inspection Report (2021) for Former Landfill Site LF006 [SWMU 4], Seymour Johnson Air Force Base, North Carolina. May.

USACE. 2002. Background Concentrations of Pesticides and Metals in Soil and Groundwater, Seymour Johnson Air Force Base. Prepared for U.S. Department of the Army Corps of Engineers – Omaha District by URS Group, Contract No. DACA45-02-D-0003 Delivery Order 5, December.

5 References

2022 LTM Sampling Report for Site LF006 Seymour Johnson AFB, NC

TABLES

Table 1 Well Construction Details

Site LF006, Seymour Johnson Air Force Base

Surface Elevation

Top of Casing

Elevation

Well Boring Depth

Screened Interval

Depth to Water from

Depth to Water from

20221

GW

Elevation from 2021

(ft amsl) (ft amsl) (ft bgs) (ft bgs) (ft btoc) (ft btoc) (ft amsl)

MW-44 71.87 74.59 13.5 1.0 - 10.1 4.93 5.14 69.66

MW-45 70.52 74.01 10.0 1.0 - 9.5 4.42 4.44 69.59

MW-46 71.30 74.71 10.5 1.0 - 9.5 3.84 3.88 70.87

MW-47 72.37 75.58 13.5 0.9 - 10.9 4.86 NT 70.72

MW-49 72.50 75.65 8.7 0.7 - 8.7 4.45 NT 71.20

MW-204 73.99 75.42 13.6 3.0 - 13.0 3.22 3.30 72.20

MW-205 71.10 72.07 11.7 1.0 - 11.1 1.76 NT 70.31

Notes:

amsl = above mean sea level bgs = below ground surface btoc = below top of casing ft = feet

GW = groundwater

NT = not taken

1 Water levels from MW-47, MW-49 and MW-205 were not collected due to equipment malfunction.

Water levels from 2021 inspections were used to develop water contours.

Well Identification

2022 LTM Sampling Report for Site LF006 Carolina Group PBR

Table 2 Summary of Field Water Quality Parameters Site LF006, Seymour Johnson Air Force Base

Well Identification

Date pH Temperature

(°C) Conductivity

(mS/cm) Dissolved

Oxygen (mg/L)

ORP

(mV)

Turbidity

(NTU)

MW-44 3/22/2022 4.19 14.9 0.070 0.26 140.7 5.09

MW-45 3/22/2022 5.22 15.8 0.089 0.25 33.5 8.17

MW-46 3/22/2022 6.47 14.8 0.860 0.52 -120.2 6.76

MW-47 3/22/2022 4.96 14.7 0.112 0.51 113.9 5.43

MW-49 3/22/2022 5.82 13.8 0.130 0.87 180.1 7.92

MW-204 3/21/2022 3.48 16.3 0.0738 1.19 205.4 2.69

MW-205 3/22/2022 3.83 15.1 0.046 0.67 105.7 9.31

SW-BKG-LF6 3/29/2022 6.60 11.3 0.072 9.24 59.2 3.41

SW-BKG-LF8 3/29/2022 6.60 11.1 0.070 9.23 59.1 3.98

Notes:

°C = degrees Celsius ft = feet mg/L = milligram per liter mS/cm = millisiemens per centimeter mV = millivolt

NTU = nephelometric turbidity unit

ORP = oxidation-reduction potential

2022 LTM Sampling Report for Site LF006 Carolina Group PBR

Table 3 Summary of Sampling

Site LF006, Seymour Johnson Air Force Base

Location Number

Collection Date

Collection Time

Sampling Matrix

VOCs (8260D)

SVOCs (8270E)

Metals (6010D/ 7470A)

Pesticides (8081B)

MW-44 3/22/2022 1335 GW X X X X

MW-45 3/22/2022 1607 GW X X X X

MW-46 3/22/2022 1220 GW X X X X

MW-47 3/22/2022 1300 GW X X X X

MW-49 3/22/2022 1200 GW X X X X

MW-204 3/21/2022 1416 GW X X X X

MW-205 3/22/2022 1600 GW X X X X

SW-BKG-LF6 3/29/2022 1340 SW X X X X

SW-BKG-LF8 3/29/2022 1307 SW X X X X

Notes:

GW = groundwater

SVOCs = semivolatile organic compounds

VOCs = volatile organic compounds

SW = surface water

2022 LTM Sampling Report for Site LF006 Carolina Group PBR

Table 4 Summary of Analytical Data

Site LF006, Seymour Johnson Air Force Base

FIELD ID

DATE COLLECTED

NC 02L1 NC 02B2 SJAFB BC3 Maximum Frequency Result LOQ Qual Result LOQ Qual Result LOQ Qual Result LOQ Qual Result LOQ Qual Result LOQ Qual Result LOQ Qual Result LOQ Qual Result LOQ Qual VOLATILE ORGANIC COMPOUNDS (µg/L)

1,2-Dichloroethene (cis) 70 60b NE 0.61 J 2 / 9 < 1 U < 1 U 0.38 1 J 0.61 1 J < 1 U < 1 U < 1 U < 1 U < 1 U

SEMIVOLATILE ORGANIC COMPOUNDS (µg/L)

No Analytes Detected PESTICIDES (ORGANOCHLORINE) (µg/L)

No Analytes Detected METALS (µg/L)

Aluminum NE 6500b 1060 1020 7 / 7 766 200 NA 1020 200 NA 119 200 J 426 200 478 200 241 200 218 200 Antimony 1 5.6a NE 2.3 J 2 / 7 < 6 U NA < 6 U NA < 6 U < 6 U < 6 U 2.3 6 J 1.7 6 J Arsenic 10 10 NE 3.5 J 2 / 7 < 10 U NA < 10 U NA 3 10 J 3.5 10 J < 10 U < 10 U < 10 UJ Barium 700 1000 86 252 7 / 7 30 200 J NA 27.3 200 J NA 252 200 25.2 200 J 23.3 200 J 49.6 200 J 49.4 200 J Boron 700 NE NE 296 7 / 7 35.1 200 J NA 69 200 J NA 296 200 33.8 200 J 13.5 200 J 21.2 200 J 19.7 200 J Calcium NE NE 7920 180000 7 / 7 4630 1000 NA 3850 1000 NA 180000 1000 4370 1000 33200 1000 7900 1000 7980 1000 Chromium 10 NE 15 2.4 J 2 / 7 < 10 U NA 1.4 10 J NA < 10 U 2.4 10 J < 10 U < 10 U < 10 U Cobalt 1 3b NE 1.8 J 5 / 7 0.5 50 J NA 0.5 50 J NA 1.8 50 J 0.7 50 J < 50 U 0.3 50 J < 50 U Copper 1000 1300a NE 2.3 J 4 / 7 < 25 U NA 1.2 25 J NA 2.3 25 J 1.8 25 J 1.8 25 J < 25 U < 25 U Iron 300 NE 1680 71200 7 / 7 1900 300 NA 2920 300 NA 71200 300 23300 300 320 300 1180 300 1180 300 Lead 15 NE NE 1.1 J 1 / 7 < 5 U NA < 5 U NA < 15 U < 5 U < 5 U < 5 U 1.1 5 J Magnesium NE NE 3080 9800 7 / 7 1450 5000 J NA 1270 5000 J NA 9800 5000 2060 5000 J 1330 5000 J 2310 5000 J 2350 5000 J Manganese 50 50a 65.2 470 7 / 7 9 15 J NA 21 15 NA 470 15 18.4 15 13.5 15 J 31.3 15 31 15 Nickel 100 25 NE 0.8 J 3 / 7 < 40 U NA 0.8 40 J NA < 40 U 0.8 40 J < 40 U < 40 U 0.4 40 J Potassium NE NE NE 9800 J 6 / 7 988 10000 J NA 1810 10000 J NA 9800 10000 J 2560 10000 J < 10000 U 3120 10000 J 3150 10000 J Selenium 20 170a NE 4 J 2 / 7 < 10 U NA < 10 U NA 4 10 J < 10 U < 10 U < 10 U 3.2 10 J Silver 20 NE NE 1.5 J 4 / 7 < 10 U NA 1.4 10 J NA 1.5 10 J 1 10 J 0.9 10 J < 10 U < 10 U Sodium NE NE 9810 33600 7 / 7 3900 10000 J NA 6830 10000 J NA 33600 10000 6520 10000 J 1870 10000 J 7390 10000 J 7490 10000 J Thallium 2 NE NE 1.8 J 1 / 7 < 10 U NA < 10 U NA < 10 U < 10 U < 10 U 1.8 10 J < 10 U Vanadium 7 NE NE 3.1 J 7 / 7 0.9 50 J NA 1.6 50 J NA 1.3 50 J 3.1 50 J 1.8 50 J 0.8 50 J 0.6 50 J Zinc 1000 NE 34.8 12.7 J 3 / 7 < 20 U NA 12.3 20 J NA < 20 U < 20 U < 20 U 12.4 20 J 12.7 20 J

Notes:

1 North Carolina Groundwater Standards 15A NCAC 02L .0202, April 2022

Gray shaded results exceed the NC 02L Groundwater Standards

MW-49 SW-BKG-LF6 SW-BKG-LF8

March 21, 2022 March 22, 2022 March 22, 2022 March 22, 2022 March 22, 2022 March 22, 2022 March 22, 2022

MW-204 MW-205 MW-44 MW-45 MW-46 MW-47

March 29, 2022 March 29, 2022

2 North Carolina Water Supply water quality standards for all water supply classifications (WS I-V) waters per 15A NCAC 02B .0208, .0212, .0214, .0215, .0216, and .0218. Unless indicated otherwise, the NC 02B is presented. In the absence of the NC 02B, the EPA NRWQC is presented, and in the absence of the EPA NRWQC, the NC Protective Value is presented.

a NC 02B Water Supply Standard is absent. Environmental Protection Agency Nationally Recommended Water Quality Criteria (EPA NRWQC) per NC DWR “Surface Water Quality Standards, Criteria & Protective Values” table (dated July 5, 2017) Water Supply Standard provided.

b NC 02B and the EPA NRWQC Water Supply standards are absent. The NC Protective Values per NC DWR “Surface Water Quality Standards, Criteria & Protective Values” table (dated July 5, 2017) Water Supply Standard provided.

3 Seymour Johnson Air Force Base Background Concentrations as presented in "Background Concentrations of Pesticides and Metals in Soil and Groundwater, Seymour Johnson Air Force Base, North Carolina" (USACE, 2002).

< = less than the limit of detection µg/L = micrograms per liter

ID = identification

J = Estimated

LOQ = Limit of Quantitation

NA = Not analyzed due to issues with submitting samples to the lab

NC - North Carolina

NC 02L = North Carolina Groundwater Standards

NC 02B = North Carolina Surface Water Standards

NE = not established

Qual = Laboratory Qualifier

U = Nondetect

UJ = Estimated Nondetect

2022 LTM Sampling Report for Site LF006 Carolina Group PBR FA8903-13-C-0006 Page 1 of 1

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Site Location Map

August 2022

Coordinate System:NAD 1983 StatePlane North Carolina FIPS 3200 Feet Projection: Lambert Conformal Conic Horizontal Datum: North American 1983 False Easting: 1,999,996.0000 False Northing: 0.0000 Central Meridian: -81.0000 Standard Parallel 1: 32.5000 Standard Parallel 2: 34.8333 Latitude Of Origin: 31.8333 Units: Foot US Base Map Date: 2013 Base Map Source: Seymour Johnson Air Force Base GeoBase

0 0.5 1 1.50.25 Kilometers

0 0.50.25 Miles

Key Features SJAFB Installation Boundary Former Landfill Site Boundary

Seymour Johnson Air Force Base

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

URS Group, Inc.

SJAFB - Seymour Johnson Air Force Base

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MW-14

MW-43

MW-45

MW-201

MW-47

MW-205

MW-203

MW-204

MW-46

MW-44

MW-202

MW-48

FIGURE 2

NOTES: LF006

Site Map

August 2022

Coordinate System:NAD 1983 StatePlane North Carolina FIPS 3200 Feet Projection: Lambert Conformal Conic Horizontal Datum: North American 1983 False Easting: 1,999,996.0000 False Northing: 0.0000 Central Meridian: -81.0000 Standard Parallel 1: 32.5000 Standard Parallel 2: 34.8333 Latitude Of Origin: 31.8333 Units: Foot US Base Map Date: 2013 Base Map Source: Seymour Johnson Air Force Base GeoBase

0 30 6015 Meters

0 100 20050 Feet

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

Key Features

@A LTM Program Monitoring Well (Sampled in 2022)

@A Former Monitoring Well Location

ED

Upstream Surface Water Sampling Location

ED

Downstream Surface Water Sampling Location Stoney Creek Installation Boundary LF006 Site Boundary

Site Location

Seymour Johnson AFB

URS Group, Inc.

AFB - Air Force Base LTM - Long Term Monitoring

Z:

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@A @A

@A

@A

@A

@A

SW-BKG-LF6

SW-BKG-LF8

MW-49

(71.20)

MW-45

(69.59)

MW-47

(70.72)

MW-205

(70.31)

MW-204

(72.20)

MW-46

(70.87)

MW-44

(69.66)

70.5

FIGURE 3

NOTES:

LF006

Monitoring Locations and Groundwater Contour Map

August 2022

Coordinate System:NAD 1983 StatePlane North Carolina FIPS 3200 Feet Projection: Lambert Conformal Conic Horizontal Datum: North American 1983 False Easting: 1,999,996.0000 False Northing: 0.0000 Central Meridian: -81.0000 Standard Parallel 1: 32.5000 Standard Parallel 2: 34.8333 Latitude Of Origin: 31.8333 Units: Foot US Base Map Date: 2013 Base Map Source: Seymour Johnson Air Force Base GeoBase

0 30 6015 Meters

0 100 20050 Feet

Key Features @A Monitoring Well (Sampled in 2022)

ED

Upstream Surface Water Sampling Location

ED

Downstream Surface Water Sampling Location for LF008 Groundwater Contour Stoney Creek Installation Boundary LF006 Site Boundary

Site Location

Seymour Johnson AFB

4A

4A Groundwater contours based on December 15, 2021 well gauging data

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

URS Group, Inc.AFB - Air Force Base th

: Z :\R al ei gh -U

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SW-BKG-LF8

MW-49

(71.20)

MW-45

(69.59)

MW-47

(70.72)

MW-205

(70.31)

MW-204

(72.20)

MW-46

(70.87)

MW-44

(69.66)

FIGURE 4

NOTES:

LF006

Chemical of Potential Concern Concentrations

August 2022

Coordinate System:NAD 1983 StatePlane North Carolina FIPS 3200 Feet Projection: Lambert Conformal Conic Horizontal Datum: North American 1983 False Easting: 1,999,996.0000 False Northing: 0.0000 Central Meridian: -81.0000 Standard Parallel 1: 32.5000 Standard Parallel 2: 34.8333 Latitude Of Origin: 31.8333 Units: Foot US Base Map Date: 2013 Base Map Source: Seymour Johnson Air Force Base GeoBase Note - All analytical results are shown in micrograms per liter.

0 30 6015

Meters

0 100 20050

Feet

Key Features

@A LTM Program Monitoring Well (Sampled in 2022)

ED

Upstream Surface Water Sampling Location

ED Downstream Surface Water Sampling Location for LF008 Stoney Creek Installation Boundary LF006 Site Boundary

Site Location

Seymour Johnson AFB

Analytical data collected during March 2022 sampling event.

Concentrations listed in micrograms per liter. Grey shaded values indicate the analyze concentration in groundwater was reported above North Carolina Groundwater Standards.

J - Estimated concentration < - Analyte not detected above the listed limit of detection (LOD) LTM- Long Term Monitoring AFB-Air Force base NA - Not analyzed due to issues with submitting samples to the lab.

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

URS Group, Inc.

Antimony < Cobalt 0.5 J

Iron 2920 Manganese 21

MW-44

Metals

Antimony NA Cobalt NA

Iron NA Manganese NA

MW-45

Metals

Antimony < Cobalt 1.8 J

Iron 71200 Manganese 470

MW-46

Metals

Antimony < Cobalt 0.7 J

Iron 23300 Manganese 18.4

MW-47

Metals

Antimony < Cobalt <

Iron 320 Manganese 13.5 J

Metals

MW-49

Antimony < Cobalt 0.5 J Iron 1900

Manganese 9 J

MW-204

Metals

Antimony NA Cobalt NA Iron NA

Manganese NA

MW-205

Metals

Antimony 2.3 J Cobalt 0.3 J Iron 1180

Manganese 31.3

SW-BKG-LF6

Metals

Antimony 1.7 J Cobalt < Iron 1180

Manganese 31

SW-BKG-LF8

Metals

APPENDIXA Laboratory Reports

04/06/22

Technical Report for

AECOM, INC.

Seymour Johnson AFB LF006; Goldsboro, NC

60417848.16170782.43AA3

SGS Job Number: FA94164

Sampling Date: 03/21/22

Report to:

AECOM, INC.

12120 Shamrock Plaza Suite 100 Omaha, NE 68154 jeff.aust@aecom.com; jared.desadier@aecom.com;

paul.m.wilson@aecom.com ATTN: Paul Wilson

Total number of pages in report:

Certifications: FL(E83510), LA(03051), KS(E-10327), NC(573), NJ(FL002), NY(12022), SC(96038001)

DoD ELAP(ANAB L2229), AZ(AZ0806), CA(2937), TX(T104704404), PA(68-03573), VA(460177), AL, AK, AR, CT, IA, KY, MA, MI. MS, ND, NH, NV, OK, OR, IL, UT, VT, WA, WI, WV

This report shall not be reproduced, except in its entirety, without the written approval of SGS.

Test results relate only to samples analyzed.

SGS North America Inc. • 4405 Vineland Road • Suite C-15 • Orlando, FL 32811 • tel: 407-425-6700 • fax: 407-425-0707

Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Program and/or state specific certification programs as applicable.

Client Service contact: Muna Mohammed 407-425-6700

Norm Farmer Technical Director

Orlando, FL 04/06/22 e-Hardcopy 2.0 Automated Report

SGS is the sole authority for authorizing edits or modifications to this document.

Unauthorized modification of this report is strictly prohibited.

Review standard terms at: http://www.sgs.com/en/terms-and-conditions

The results set forth herein are provided by SGS North America Inc.

Please share your ideas about how we can serve you better at:

EHS.US.CustomerCare@sgs.com

FA94164

mailto:EHS.US.CustomerCare@sgs.com?subject=Customer care improvement idea (report FA94164)

Table of Contents -1-

Sections:

Section 1: Sample Summary Section 2: Case Narrative/Conformance Summary Section 3: Summary of Hits Section 4: Sample Results

4.1: FA94164-1: MW-204

4.2: FA94164-2: TRIP BLANK

Section 5: Misc. Forms 5.1: Chain of Custody 5.2: QC Evaluation: DOD QSM5.x Limits

Section 6: MS Volatiles - QC Data Summaries 6.1: Method Blank Summary 6.2: Blank Spike Summary 6.3: Matrix Spike/Matrix Spike Duplicate Summary 6.4: Instrument Performance Checks (BFB) 6.5: Internal Standard Area Summaries 6.6: Surrogate Recovery Summaries 6.7: Initial and Continuing Calibration Summaries 6.8: Run Sequence Reports

Section 7: MS Volatiles - Raw Data 7.1: Samples 7.2: Method Blanks 7.3: Blank Spikes 7.4: Matrix Spike/Matrix Spike Duplicates 7.5: Instrument Performance Checks (BFB) 7.6: Initial and Continuing Calibrations 7.7: Instrument Run Logs

Section 8: MS Semi-volatiles - QC Data Summaries 8.1: Method Blank Summary 8.2: Blank Spike Summary 8.3: Matrix Spike/Matrix Spike Duplicate Summary 8.4: Instrument Performance Checks (DFTPP) 8.5: Internal Standard Area Summaries 8.6: Surrogate Recovery Summaries 8.7: Initial and Continuing Calibration Summaries 8.8: Run Sequence Reports

Section 9: MS Semi-volatiles - Raw Data 9.1: Samples 9.2: Method Blanks 9.3: Blank Spikes 9.4: Matrix Spike/Matrix Spike Duplicates 9.5: Instrument Performance Checks (DFTPP) 9.6: Initial and Continuing Calibrations

Table of Contents -2-

Sections:

9.7: Instrument Run Logs 9.8: Prep Logs

Section 10: GC/LC Semi-volatiles - QC Data Summaries 10.1: Method Blank Summary 10.2: Blank Spike Summary 10.3: Matrix Spike/Matrix Spike Duplicate Summary 10.4: DDT/Endrin Breakdown Checks 10.5: Surrogate Recovery Summaries 10.6: GC Surrogate Retention Time Summaries 10.7: Initial and Continuing Calibration Summaries 10.8: Run Sequence Reports

Section 11: GC/LC Semi-volatiles - Raw Data 11.1: Samples 11.2: Method Blanks 11.3: Blank Spikes 11.4: Matrix Spike/Matrix Spike Duplicates 11.5: DDT/Endrin Breakdown Checks 11.6: Initial and Continuing Calibrations 11.7: Instrument Run Logs 11.8: Prep Logs

Section 12: Metals Analysis - QC Data Summaries 12.1: Inst QC MA18552: Hg 12.2: Inst QC MA18562: Al,Sb,As,Ba,Be,Cd,Ca,Cr,Co,Cu,Fe,Pb,Mg,Mn,Ni,K,Se,Ag, Na,Tl,V,Zn 12.3: Prep QC MP40469: Hg 12.4: Prep QC MP40480: Al,Sb,As,Ba,Be,Cd,Ca,Cr,Co,Cu,Fe,Pb,Mg,Mn,Ni,K,Se,Ag, Na,Tl,V,Zn 12.5: IDL and Linear Range Summaries

Section 13: Metals Analysis - Raw Data 13.1: Raw Data MA18552 13.2: Raw Data MA18562 13.3: Prep Logs

Section 14: Misc. Forms (SGS Dayton, NJ) 14.1: Chain of Custody 14.2: QC Evaluation: DOD QSM5.x Limits

Section 15: Metals Analysis - QC Data (SGS Dayton, NJ) 15.1: Inst QC MA52167: B 15.2: Prep QC MP32083: B 15.3: IDL and Linear Range Summaries

Section 16: Metals Analysis - Raw Data (SGS Dayton, NJ) 16.1: Raw Data MA52167 16.2: Prep Logs

SGS North America Inc.

Sample Summary

AECOM, INC.

Job No: FA94164

Seymour Johnson AFB LF006; Goldsboro, NC Project No: 60417848.16170782.43AA3

Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID

FA94164-1 03/21/22 14:16 AC 03/22/22 AQ Ground Water MW-204

FA94164-2 03/21/22 00:00 AC 03/22/22 AQ Trip Blank Water TRIP BLANK

SAMPLE DELIVERY GROUP CASE NARRATIVE

Client: AECOM, INC. Job No: FA94164 Site: Seymour Johnson AFB LF006; Goldsboro, NC Report Date: 4/6/2022 2:25:08 PM On 03/22/2022, 1 Sample(s), 1 Trip Blank(s) and 0 Field Blank(s) were received at SGS North America Inc - Orlando. at a maximum corrected temperature of 2 C. Samples were intact and chemically preserved, unless noted below. A SGS North America Inc. - Orlando Job Number of FA94164 was assigned to the project.

Laboratory sample ID, client sample ID and dates of sample collection are detailed in the report’s Results Summary Section.

Specified quality control criteria were achieved for this job except as noted below. For more information, please refer to the analytical results and QC summary pages.

MS Volatiles By Method SW846 8260D Matrix: AQ Batch ID: V1P3455 FA94164-2: Sample re-analyzed beyond hold time; reported results are considered minimum values. Confirmation run.

Matrix: AQ Batch ID: VI2506 Sample(s) FA94157-5MS, FA94157-5MSD were used as the QC samples indicated.

Matrix Spike Recovery(s) for Trichlorofluoromethane are outside control limits. Probable cause is due to matrix interference.

MS Semi-volatiles By Method SW846 8270E Matrix: AQ Batch ID: OP90417 Sample(s) FA94157-1MS, FA94157-1MSD were used as the QC samples indicated.

Blank Spike Recovery(s) for Isophorone are outside control limits.

Matrix Spike Recovery(s) for Isophorone are outside control limits. Probable cause is due to matrix interference.

For Sample(s) FA94164-1 are associated with an CCV that has a recovery for 2,2'-Oxybis(1-chloropropane) outside low control limit.

FA94164-1 for Benzoic Acid: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for 2,2'-Oxybis(1-chloropropane): Associated CCV outside of control limits low.

GC/LC Semi-volatiles By Method SW846 8081B Matrix: AQ Batch ID: OP90450 Sample(s) FA94157-1MS, FA94157-1MSD were used as the QC samples indicated.

FA94164-1 for Endosulfan sulfate: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for 4,4'-DDD: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for 4,4'-DDE: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for 4,4'-DDT: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Aldrin: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for alpha-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for beta-BHC: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for gamma-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Endrin: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Endrin aldehyde: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for delta-BHC: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for gamma-BHC (Lindane): Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Dieldrin: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Heptachlor: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Heptachlor epoxide: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Endosulfan-II: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for alpha-BHC: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Methoxychlor: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Endosulfan-I: Associated CCV outside of control limits high, sample was ND.

FA94164-1 for Endrin ketone: Associated CCV outside of control limits high, sample was ND.

Metals Analysis By Method SW846 6010D Matrix: AQ Batch ID: MP40480 Sample(s) FA94157-1DUP, FA94157-1MS, FA94157-1MSD, FA94157-1PS, FA94157-1SDL were used as the QC samples.

RPD(s) for Duplicate for Iron, Selenium, Silver, Thallium, Zinc are outside control limits for sample MP40480-D1. RPD acceptable due to low duplicate and sample concentrations.

RPD(s) for Serial Dilution for Iron, Potassium, Selenium, Silver, Zinc are outside control limits for sample MP40480-SD1.

Percent difference acceptable due to low initial sample concentration (< 50 times IDL).

Matrix: AQ Batch ID: N:MP32083 FA94164-1 for Boron: Analysis performed at SGS Dayton, NJ.

Metals Analysis By Method SW846 7470A Matrix: AQ Batch ID: MP40469 Sample(s) FA94157-1DUP, FA94157-1MS, FA94157-1MSD, FA94157-1SDL were used as the QC samples for metals.

SGS North America Inc. - Orlando certifies that data reported for samples received, listed on the associated custody chain or analytical task order, were produced to specifications meeting the Quality System precision, accuracy and completeness objectives except as noted. Estimated non-standard method measurement uncertainty data is available on request, based on quality control bias and implicit for standard methods. Acceptable uncertainty requires tested parameter quality control data to meet method criteria.

SGS North America Inc.- Orlando is not responsible for data quality assumptions if partial reports are used and recommends that this report be used in its entirety.

Narrative prepared by:

Kim Benham, Client Services (Signature on File)

On 03/24/2022, 1 Sample(s), 0 Trip Blank(s) and 0 Field Blank(s) were received at SGS North America Inc. at a maximum corrected temperature of 1.8 C. Samples were intact and chemically preserved, unless noted below. A SGS North America Inc. Job Number of FA94164 was assigned to the project. Laboratory sample ID, client sample ID and dates of sample collection are detailed in the report’s Results Summary Section.

Specified quality control criteria were achieved for this job except as noted below. For more information, please refer to the analytical results and QC summary pages.

Client: SGS Orlando, FL

Site: URSNCM: Seymour Johnson AFB LF006; Goldsboro, NC

Job No FA94164

Report Date 4/5/2022 10:44:56 AM

CASE NARRATIVE / CONFORMANCE SUMMARY

Compounds qualified as out of range in the continuing calibration summary report are acceptable as per method requirements when there is a high bias but the sample result is non-detect.

Metals Analysis By Method SW846 6010D Matrix: AQ Batch ID: MP32083

All samples were digested within the recommended method holding time.

All method blanks for this batch meet method specific criteria.

Sample(s) FA94378-1MS, FA94378-1MSD, FA94378-1SDL were used as the QC samples for metals.

SGS North America Inc. certifies that data reported for samples received, listed on the associated custody chain or analytical task order, were produced to specifications meeting the Quality System precision, accuracy and completeness objectives except as noted.

Estimated non-standard method measurement uncertainty data is available on request, based on quality control bias and implicit for standard methods. Acceptable uncertainty requires tested parameter quality control data to meet method criteria.

SGS North America Inc. is not responsible for data quality assumptions if partial reports are used and recommends that this report be used in its entirety. Data release is authorized by SGS North America Inc indicated via signature on the report cover

Tuesday, April 05, 2022 Page 1 of 1

FA94164

2.1

Summary of Hits Page 1 of 1 Job Number: FA94164 Account: AECOM, INC.

Project: Seymour Johnson AFB LF006; Goldsboro, NC Collected: 03/21/22

Lab Sample ID Client Sample ID Result/ Analyte Qual LOQ LOD Units Method

FA94164-1 MW-204

Aluminum 766 200 25 ug/l SW846 6010D Barium 30.0 J 200 5.0 ug/l SW846 6010D Boron a 35.1 J 200 40 ug/l SW846 6010D Calcium 4630 1000 100 ug/l SW846 6010D Cobalt 0.50 J 50 1.0 ug/l SW846 6010D Iron 1900 300 50 ug/l SW846 6010D Magnesium 1450 J 5000 100 ug/l SW846 6010D Manganese 9.0 J 15 2.0 ug/l SW846 6010D Potassium 988 J 10000 500 ug/l SW846 6010D Sodium 3900 J 10000 2000 ug/l SW846 6010D Vanadium 0.90 J 50 2.0 ug/l SW846 6010D

FA94164-2 TRIP BLANK

Acetone 20.0 J 25 20 ug/l SW846 8260D

(a) Analysis performed at SGS Dayton, NJ.

Sample Results

Report of Analysis

Orlando, FL Section 4

Report of Analysis Page 1 of 3

Client Sample ID: MW-204

Lab Sample ID: FA94164-1 Date Sampled: 03/21/22

Matrix: AQ - Ground Water Date Received: 03/22/22

Method: SW846 8260D Percent Solids: n/a

Project: Seymour Johnson AFB LF006; Goldsboro, NC

File ID DF Analyzed By Prep Date Prep Batch Analytical Batch

Run #1 I746758.D 1 04/01/22 16:38 CF n/a n/a VI2506

Run #2

Purge Volume

Run #1 5.0 ml

Run #2

VOA 8260 List

CAS No. Compound Result LOQ LOD DL Units Q

67-64-1 Acetone 20 U 25 20 10 ug/l

71-43-2 Benzene 0.50 U 1.0 0.50 0.31 ug/l

108-86-1 Bromobenzene 0.50 U 1.0 0.50 0.37 ug/l

74-97-5 Bromochloromethane 0.50 U 1.0 0.50 0.45 ug/l

75-27-4 Bromodichloromethane 0.50 U 1.0 0.50 0.24 ug/l

75-25-2 Bromoform 0.50 U 1.0 0.50 0.41 ug/l

78-93-3 2-Butanone (MEK) 3.5 U 5.0 3.5 2.0 ug/l

104-51-8 n-Butylbenzene 0.50 U 1.0 0.50 0.23 ug/l

135-98-8 sec-Butylbenzene 0.50 U 1.0 0.50 0.24 ug/l

98-06-6 tert-Butylbenzene 0.50 U 1.0 0.50 0.31 ug/l

75-15-0 Carbon Disulfide 1.0 U 2.0 1.0 0.53 ug/l

56-23-5 Carbon Tetrachloride 0.50 U 1.0 0.50 0.36 ug/l

108-90-7 Chlorobenzene 0.50 U 1.0 0.50 0.20 ug/l

75-00-3 Chloroethane 1.0 U 2.0 1.0 0.67 ug/l

67-66-3 Chloroform 0.50 U 1.0 0.50 0.30 ug/l

95-49-8 o-Chlorotoluene 0.50 U 1.0 0.50 0.22 ug/l

106-43-4 p-Chlorotoluene 0.50 U 1.0 0.50 0.31 ug/l

124-48-1 Dibromochloromethane 0.50 U 1.0 0.50 0.28 ug/l

96-12-8 1,2-Dibromo-3-chloropropane 2.0 U 5.0 2.0 1.0 ug/l

106-93-4 1,2-Dibromoethane 1.0 U 2.0 1.0 0.28 ug/l

75-71-8 Dichlorodifluoromethane 1.0 U 2.0 1.0 0.50 ug/l

95-50-1 1,2-Dichlorobenzene 0.50 U 1.0 0.50 0.32 ug/l

541-73-1 1,3-Dichlorobenzene 0.50 U 1.0 0.50 0.22 ug/l

106-46-7 1,4-Dichlorobenzene 0.50 U 1.0 0.50 0.26 ug/l

75-34-3 1,1-Dichloroethane 0.50 U 1.0 0.50 0.34 ug/l

107-06-2 1,2-Dichloroethane 0.50 U 1.0 0.50 0.31 ug/l

75-35-4 1,1-Dichloroethylene 0.50 U 1.0 0.50 0.32 ug/l

156-59-2 cis-1,2-Dichloroethylene 0.50 U 1.0 0.50 0.28 ug/l

156-60-5 trans-1,2-Dichloroethylene 0.50 U 1.0 0.50 0.22 ug/l

78-87-5 1,2-Dichloropropane 0.50 U 1.0 0.50 0.43 ug/l

142-28-9 1,3-Dichloropropane 0.50 U 1.0 0.50 0.31 ug/l

594-20-7 2,2-Dichloropropane 0.50 U 1.0 0.50 0.24 ug/l

U = Not detected LOD = Limit of Detection J = Indicates an estimated value

LOQ = Limit of Quantitation DL = Detection Limit B = Indicates analyte found in associated method blank

E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound

Raw Data: I746758.D

FA94164

4.1

Report of Analysis Page 2 of 3

Client Sample ID: MW-204

Lab Sample ID: FA94164-1 Date Sampled: 03/21/22

Matrix: AQ - Ground Water Date Received: 03/22/22

Method: SW846 8260D Percent Solids: n/a

Project: Seymour Johnson AFB LF006; Goldsboro, NC

VOA 8260 List

CAS No. Compound Result LOQ LOD DL Units Q

563-58-6 1,1-Dichloropropene 0.50 U 1.0 0.50 0.34 ug/l

10061-01-5 cis-1,3-Dichloropropene 0.50 U 1.0 0.50 0.29 ug/l

10061-02-6 trans-1,3-Dichloropropene 0.50 U 1.0 0.50 0.21 ug/l

100-41-4 Ethylbenzene 0.50 U 1.0 0.50 0.36 ug/l

87-68-3 Hexachlorobutadiene 1.0 U 2.0 1.0 0.30 ug/l

591-78-6 2-Hexanone 5.0 U 10 5.0 2.0 ug/l

98-82-8 Isopropylbenzene 0.50 U 1.0 0.50 0.22 ug/l

99-87-6 p-Isopropyltoluene 0.50 U 1.0 0.50 0.21 ug/l

74-83-9 Methyl Bromide 4.0 U 5.0 4.0 2.0 ug/l

74-87-3 Methyl Chloride 1.0 U 2.0 1.0 0.50 ug/l

74-95-3 Methylene Bromide 0.50 U 2.0 0.50 0.37 ug/l

75-09-2 Methylene Chloride 4.0 U 5.0 4.0 2.0 ug/l

108-10-1 4-Methyl-2-pentanone (MIBK) 2.0 U 5.0 2.0 1.0 ug/l

1634-04-4 Methyl Tert Butyl Ether 0.50 U 1.0 0.50 0.23 ug/l

91-20-3 Naphthalene 2.0 U 5.0 2.0 1.0 ug/l

103-65-1 n-Propylbenzene 0.50 U 1.0 0.50 0.29 ug/l

100-42-5 Styrene 0.50 U 1.0 0.50 0.22 ug/l

630-20-6 1,1,1,2-Tetrachloroethane 0.50 U 1.0 0.50 0.28 ug/l

79-34-5 1,1,2,2-Tetrachloroethane 0.50 U 1.0 0.50 0.30 ug/l

127-18-4 Tetrachloroethylene 0.50 U 1.0 0.50 0.22 ug/l

108-88-3 Toluene 0.50 U 1.0 0.50 0.30 ug/l

87-61-6 1,2,3-Trichlorobenzene 1.0 U 2.0 1.0 0.61 ug/l

120-82-1 1,2,4-Trichlorobenzene 1.0 U 2.0 1.0 0.50 ug/l

71-55-6 1,1,1-Trichloroethane 0.50 U 1.0 0.50 0.25 ug/l

79-00-5 1,1,2-Trichloroethane 0.50 U 1.0 0.50 0.47 ug/l

79-01-6 Trichloroethylene 0.50 U 1.0 0.50 0.35 ug/l

75-69-4…