B.08 LF016 LTM Report Final rev 0.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 LF016

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 LF016 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 ........................................... 3-2

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 LF016 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 LF016 Site Location Map Figure 2 LF016 Site Map Figure 3 LF016 Monitoring Locations and Groundwater Contour Map Figure 4 LF016 Chemical of Potential Concern Concentrations

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

2022 LTM Sampling Report for Site LF016 iii Seymour Johnson AFB, NC

FA8903-13-C-0006

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

LF016 Landfill Number 3 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 SVOC semi-volatile organic compound SWMU Solid Waste Management Unit

URS

USEPA

URS Group, Inc.

United States Environmental Protection Agency

VOC volatile organic compound

SECTIONONE Introduction

2022 LTM Sampling Report for Site LF016 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 LF016 (Landfill Number 3) (Solid Waste Management Unit [SWMU] 3) at Seymour Johnson Air Force Base (SJAFB), Goldsboro, North Carolina. The locations of SJAFB and LF016 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 LF016, and this LTM report has been prepared by URS. The contracted performance objective for LF016 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 LF016 (LTM) was designed to maintain protection of human health and the environment through long-term monitoring of groundwater and surface water downgradient of LF016 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 LF016 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 LF016 2-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

2.1 SITE DESCRIPTION

Site LF016 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 3 (NCDEQ, 2019).

The site is located along the northern edge of the base and occupies approximately 15 acres (Figure 1). The site, situated northwest of the intersection of Biggs and Ream Streets, is adjacent to Stoney Creek and an unnamed creek to the south. From 1961 until 1970, it was used for the disposal of general refuse, coal ash, tank sludge, spent filters, paint residues, and solvents.

Landfill disposal practices included both trench and slope fill operations (URS, 2007).

Currently, the landfill is open space. A soil cover of at least 2 feet in thickness and consisting primarily of silty sands and clayey sands is present across all but the western edge of the site, based on shallow geotechnical borings completed in 2003 (URS, 2007).

The perimeter of the former landfill in relation to Stoney Creek and other surrounding features is shown on Figure 2. The site has not been repurposed by the base for other activities and exists as primarily grassy and wooded land serving as a buffer near the base perimeter boundary.

2.2 GROUNDWATER AND SURFACE WATER SAMPLING ACTIVITIES

During the 2022 sampling event, water levels were collected from five monitoring wells at LF016. 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 March 2022 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 sheets on which field measurements and other observations were recorded are included in Appendix C.

Groundwater and surface water sampling were collected at LF016 on 28 March 2022 and 29 March 2022. Sampling was completed as follows:

• Groundwater samples were collected from monitoring wells MW-51, MW-52, MW-53, MW-408, and MW-409.

• Surface water samples were collected from location SW-BKG-LF6 and SW-BKG-LF16.

• 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 Groundwater and Surface Water

2022 LTM Sampling Report for Site LF016 2-2 Seymour Johnson AFB, NC

FA8903-13-C-0006

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

• VOCs – Five analytes, 1,2-Dichlorobenzene, 1,3-Dichlorobenzene, 1,4-Dichlorobenzene, Chlorobenzene, and Toluene were detected in at least one monitoring location at LF016.

1,4-Dichlorobenzene was detected above the NC 2L Groundwater Standard of 6 micrograms per liter (µg/L). There was no 1,4-Dichlorobenzene detection in the samples collected from Stoney Creek. The presence of this analyte at MW-51 is consistent with historical data (URS, 2018).

• SVOCs – Two analytes, 1,2-Dichlorobenzene and 1,4-Dichlorobenzene, were detected in monitoring wells MW-51 and MW-52. 1,2-Dichlorobenzene was detected in MW-51 below the NC 2L Groundwater Standard of 20 µg/L. As notes above, 1,4-Dichlorobenzene was reported at a concentration above the NC 2L Groundwater Standard of 6 µg/L. No SVOCs were detected in the samples collected from Stoney Creek.

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

• Metals – Four analytes (antimony, iron, manganese, and thallium) were detected at concentrations above the NC 2L Groundwater Standards.

− Antimony was detected at monitoring locations MW-53, MW-408 and SW-BKG-LF6 at concentrations above the NC 2L Groundwater Standard of 1 µg/L. However, the concentrations were below the Environmental Protection Agency Nationally Recommended Water Quality Criteria of 5.6 µg/L.

− Iron was detected at all five monitoring wells and both surface water samples above the NC 2L Groundwater Standard of 300 µg/L. Iron in the groundwater is documented to occur at widely varying concentrations on base and in coastal sediments.

− Manganese was detected in all five of the monitoring wells and both surface samples.

The results for MW-51, MW-52, MW-53, MW-408 and MW-409, were detected above the NC 2L Groundwater Standard of 50 µg/L. These results are consistent with 2017 historical results from LF016 (URS, 2018). A comparison of concentrations reported in both upstream and downstream surface water samples suggest there is no significant source of manganese discharge from LF016 groundwater or impacting Stoney Creek.

− Thallium was detected at monitoring point MW-53 above the NC 2L Standard of 2 µg/L. Additionally thallium was detected in SW-BKG-LF6 and MW-409, although the results were below the NC 2L Standard. These results indicate a slight increase in concentration from the 2017 historical results at LF016 (URS, 2018).

2022 LTM Sampling Report for Site LF016 2-3 Seymour Johnson AFB, NC

FA8903-13-C-0006

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 LF016 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. SGS Laboratories subcontracted out analysis for total boron to the Dayton, New Jersey laboratory. 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

Metals results for arsenic at MW-408 were qualified as estimated due to post digestive percent differences outside evaluation criteria. VOC results for n-butylbenzene and tetrachloroethylene were qualified as estimated non-detect due to relative percent differences in the matrix spike/matrix spike duplicate sample.

3 Data Quality Evaluation

SECTIONTHREE Data Quality Evaluation

2022 LTM Sampling Report for Site LF016 3-2 Seymour Johnson AFB, NC

FA8903-13-C-0006

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.

SECTIONFOUR Conclusions and Recommendations

2022 LTM Sampling Report for Site LF016 4-1 Seymour Johnson AFB, NC

FA8903-13-C-0006

4.1 CONCLUSIONS

Samples were collected from five 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 1,4-dichlorobenzene, antimony, iron, manganese and thallium in groundwater at concentrations exceeding their respective comparison criteria:

• 1,4-dichlorobenzene was reported at concentrations slightly exceeding the NC 2L Groundwater Standard. 1,4-dichlorobenzene was detected via VOC Method 8260D and SVOC Method 8270E. The 1,4-dichlorobenzene concentrations are consistent with historical results and not present in the surface water samples collected from upstream and downstream of LF016.

• Antimony was detected at monitoring locations MW-52, MW-408 and SW-BKG-LF6 at concentrations above the NC 2L Groundwater Standard of 1 µg/L. These detections were 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 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 LF016 to Stoney Creek is not causing adverse impacts to surface water quality.

• Manganese concentrations were detected above the NC 2L Groundwater Standard in five of the monitoring locations at LF016. These results are consistent with historical results from the site and a comparison of concentrations reported in both upstream and downstream surface water samples suggest there is no significant source of manganese discharge from LF016 groundwater or impacting Stoney Creek.

• Thallium was detected at monitoring point MW-53 above the NC 2L Standard of 2 µg/L.

Additionally, thallium was detected in SW-BKG-LF6 and MW-409, although the results were below the NC 2L Standard. Based on the concentrations identified it does not represent an adverse impact to the 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

SECTIONFOUR Conclusions and Recommendations

2022 LTM Sampling Report for Site LF016 4-2 Seymour Johnson AFB, NC

FA8903-13-C-0006

• Annual landfill inspection reports should be continued to document site conditions and land use controls, as well as maintenance of monitoring wells, landfill cover maintenance, and correction of deficiencies noted during these site inspections.

SECTIONFIVE References

2022 LTM Sampling Report for Site LF016 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). 2007. Final Landfill Sites Technical Evaluation / Long-Term Management Design (LF-06, LF-08, LF-15, LF-16), Seymour Johnson Air Force Base, North Carolina. June.

URS. 2018. Draft Final 2017 Long-Term Management Sampling and Annual Site Inspection Report Site LF016, Seymour Johnson Air Force Base, North Carolina. September.

5 References

2022 LTM Sampling Report for Site LF016 Seymour Johnson AFB, NC

TABLES

Table 1 Well Construction Details

Site LF016, Seymour Johnson Air Force Base

Surface Elevation

Top of Casing Elevation

Well Boring Depth

Screened Interval

Depth to Water from 2022

GW Elevation from 2022

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

MW-51 75.13 76.16 9.00 0.5-5.5 5.50 70.66

MW-52 72.36 75.60 7.50 0.5-5.5 3.96 71.64

MW-53 73.18 76.44 9.00 1.0-6.0 5.09 71.35

MW-408 72.50 75.20 6.00 2.0-6.0 3.88 71.32

MW-409 77.00 80.26 8.00 2.0-8.0 5.17 75.09

Notes:

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

GW = groundwater

Well Identification

2022 LTM Sampling for Site LF016 Seymour Johnson AFB, NC

Table 2 Summary of Field Water Quality Parameters Site LF016, Seymour Johnson Air Force Base

Well Identification

Date pH Temperature

(°C) Conductivity

(mS/cm) Dissolved

Oxygen (mg/L)

ORP

(mV)

Turbidity

(NTU)

MW-51 3/28/2022 6.14 13.8 0.390 0.18 -53.7 4.96

MW-52 3/28/2022 6.16 13.5 0.377 0.21 -51.5 4.65

MW-53 3/28/2022 6.36 13.7 0.353 0.25 -69.0 8.62

MW-408 3/28/2022 6.39 11.6 0.161 0.23 -25.1 6.41

MW-409 3/28/2022 5.91 13.3 0.068 0.25 24.1 5.17

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

SW-BKG-LF16 3/29/2022 6.61 11.6 0.069 8.55 86.0 2.87

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 for Site LF016 Seymour Johnson AFB, NC

Table 3 Summary of Sampling

Site LF016, Seymour Johnson Air Force Base

Location Number

Collection Date

Collection Time

Sampling Matrix

VOCs (8260D)

SVOCs (8270E)

Metals (6010D/ 7470A)

Pesticides (8081)

MW-51 3/28/2022 1350 GW X X X X

MW-52 3/28/2022 1500 GW X X X X

MW-53 3/28/2022 1625 GW X X X X

MW-408 3/28/2022 1238 GW X X X X

MW-409 3/28/2022 1130 GW X X X X

SW-BKG-LF6 3/29/2022 1210 SW X X X X

SW-BKG-LF16 3/29/2022 1133 SW X X X X

Notes:

GW = groundwater

SVOCs = semivolatile organic compounds

SW = surface water

VOCs = volatile organic compounds

2022 LTM Sampling for Site LF016 Seymour Johnson AFB, NC

Table 4 Summary of Analytical Data

Site LF016, Seymour Johnson Air Force Base

FIELD ID

DATE COLLECTED

NC 02L1 NC 02B2 Maximum Frequency 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-Dichlorobenzene 20 488* 1.1 1 / 7 < 1 U < 1 U 1.1 1 < 1 U < 1 U < 1 U < 1 U 1,3-Dichlorobenzene 200 488* 0.42 J 1 / 7 < 1 U < 1 U 0.42 1 J < 1 U < 1 U < 1 U < 1 U 1,4-Dichlorobenzene 6 488* 12.4 2 / 7 < 1 U < 1 U 12.4 1 0.69 1 J < 1 U < 1 U < 1 U Chlorobenzene 50 488* 45.2 2 / 7 < 1 U < 1 U 45.2 1 3.4 1 < 1 U < 1 U < 1 U Toluene 600 57a 0.33 J 1 / 7 < 1 U < 1 U < 1 U < 1 U < 1 U 0.33 1 J < 1 U

SEMIVOLATILE ORGANIC COMPOUNDS (µg/L)

1,2-Dichlorobenzene 20 488* 0.83 J 1 / 7 < 4.8 U < 4.8 U 0.83 4.8 J < 4.8 U < 4.8 U < 4.8 U < 4.8 U 1,4-Dichlorobenzene 6 488* 7.9 2 / 7 < 4.8 U < 4.8 U 7.9 4.8 0.48 4.8 J < 4.8 U < 4.8 U < 4.8 U

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

METALS (µg/L) Aluminum NE NE 241 7 / 7 39.1 200 J 143 200 J 50.3 200 J 196 200 J 35.2 200 J 178 200 J 241 200 Antimony 1 5.6a 2.3 J 3 / 7 2.1 6 J < 6 U < 6 U < 6 U 1.5 6 J < 6 U 2.3 6 J Arsenic 10 10 2.7 J 4 / 7 2.7 10 J 1.7 10 J 2.5 10 J 2.6 10 J < 10 U < 10 U < 10 U Barium 700 1000 107 J 7 / 7 21.3 200 J 15.5 200 J 71.7 200 J 79.3 200 J 107 200 J 50.8 200 J 49.6 200 J Boron 700 NE 456 7 / 7 127 200 J 20.6 200 J 246 200 208 200 456 200 19.2 200 J 21.2 200 J Calcium NE NE 95400 7 / 7 34500 1000 7170 1000 49100 1000 95400 1000 69900 1000 8010 1000 7900 1000 Chromium 10 NE 1.5 J 1 / 7 < 10 U < 10 U < 10 U < 10 U 1.5 10 J < 10 U < 10 U Cobalt 1 3b 0.4 J 2 / 7 0.4 50 J < 50 U < 50 U < 50 U < 50 U < 50 U 0.3 50 J Iron 300 NE 83700 7 / 7 11100 300 4780 300 83700 300 37100 300 42700 300 1140 300 1180 300 Lead 15 NE 4.3 J 2 / 7 < 5 U < 5 U < 30 U < 20 U 4.3 5 J 1.3 5 J < 5 U Magnesium NE NE 11300 7 / 7 4950 5000 J 1660 5000 J 11300 5000 5210 5000 7250 5000 2240 5000 J 2310 5000 J Manganese 50 50a 278 7 / 7 133 15 69 15 220 15 259 15 278 15 32.9 15 31.3 15 Nickel 100 25 0.8 J 1 / 7 < 40 U < 40 U < 40 U < 40 U < 40 U 0.8 40 J < 40 U Potassium NE NE 8540 J 7 / 7 3490 10000 J 2310 10000 J 8540 10000 J 5740 10000 J 6180 10000 J 3110 10000 J 3120 10000 J Selenium 20 170a 4.5 J 2 / 7 4.5 10 J < 10 U < 10 U 3.4 10 J < 10 U < 10 U < 10 U Silver 20 NE 0.8 J 2 / 7 0.8 10 J < 10 U 0.8 10 J < 10 U < 10 U < 10 U < 10 U Sodium NE NE 12900 7 / 7 6450 10000 J 6700 10000 J 6670 10000 J 4450 10000 J 12900 10000 6790 10000 J 7390 10000 J Thallium 2 NE 4.4 J 3 / 7 < 10 U 1.7 10 J < 10 U < 10 U 4.4 10 J < 10 U 1.8 10 J Vanadium 7 NE 2.9 J 4 / 7 1.2 50 J 2.9 50 J < 50 U < 50 U < 50 U 0.6 50 J 0.8 50 J Zinc 1000 NE 12.4 J 2 / 7 < 20 U < 20 U < 20 U < 20 U < 20 U 8.9 20 J 12.4 20 J

Notes:

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

* NC 02B Standard is the total of all Chlorinated Benzenes

Gray shaded results exceed the NC 02L Groundwater Standards

MW-53 SW-BKG-LF16

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.

SW-BKG-LF6

March 28, 2022 March 28, 2022 March 28, 2022 March 28, 2022 March 28, 2022 March 29, 2022 March 29, 2022

MW-408 MW-409 MW-51 MW-52

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

ID = identification

J = Estimated

LOQ = Limit of Quantitation

NC - North Carolina

NC 02L = North Carolina Groundwater Standards

NC 02B = North Carolina Surface Water Standards

NE = not established

Qual = Qualifier (URS qualifiers discussed in Section 3, lab qualifiers discussed in Appendix B)

2022 LTM Sampling for Site LF016 Carolina Group PBR FA8903-13-C-0006 Page 1 of 1

FIGURES

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NOTES:

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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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2308750

NOTES: 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

Key Features

@A LTM Program Monitoring Well (Sampled in 2022)

@A Former Monitoring Well

ED

Upstream Surface Water Sampling Location

ED

Downstream Surface Water Sampling Location Stoney Creek Installation Boundary LF016 Site Boundary

Site Location

Seymour Johnson AFB

FIGURE 2

LF016

Site Map

August 2022

0 30 60 9015 Meters

0 100 200 30050 Feet

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

URS Group, Inc.

ED

SW-BKG-LF6

(Approx. 0.75 Mile Downstream)

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MW-53

(71.35)

MW-51

(70.66)

MW-408

(71.32)

MW-409

(75.09)

SW-BKG-LF16

2308750

2308750

NOTES: 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

Key Features

@A LTM Program Monitoring Well (Sampled in 2022)

ED

Upstream Surface Water Sampling Location

ED

Downstream Surface Water Sampling Location Groundwater Contour Stoney Creek Installation Boundary LF016 Site Boundary

Site Location

Seymour Johnson AFB

4A

4A Groundwater elevations and contours based on March 28, 2022 well gauging data.

FIGURE 3

LF016

Monitoring Locations and Groundwater Contour Map

August 2022

0 30 60 9015 Meters

0 100 200 30050 Feet

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

URS Group, Inc.

ED

SW-BKG-LF6

(Approx. 0.75 Mile Downstream)

AFB - Air Force Base LTM - Long Term Monitoring th

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MW-52

(71.64)

MW-53

(71.35)

MW-51

(70.66)

MW-408

(71.32)

MW-409

(75.09)

SW-BKG-LF16

2308750

2308750

NOTES: 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

Key Features

@A LTM Program Monitoring Well (Sampled in 2022)

ED

Upstream Surface Water Sampling Location

ED

Downstream Surface Water Sampling Location Stoney Creek Installation Boundary LF016 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 - Estimate concentration < - Analyte not detected LTM - Long Term Monitoring AFB - Air Force Base VOC - Volatile Organic Compound

FIGURE 4

LF016

Chemical of Potential Concern Concentrations

August 2022

0 30 60 9015

Meters

0 100 200 30050

Feet

Carolina Group Performance Based Remediation Contract

Seymour Johnson Air Force Base Goldsboro, NC

Contract No. FA8903-13-C-0006

URS Group, Inc.

ED

SW-BKG-LF6

(Approx. 0.75 Mile Downstream)

1,4-Dichlorobenzene 12.4

Antimony < Iron 83700

Manganese 220 Thallium <

MW-51

VOC

Metals

1,4-Dichlorobenzene <

Antimony < Iron 4780

Manganese 69 Thallium 1.7 J

MW-409

VOC

Metals

1,4-Dichlorobenzene 0.69 J

Antimony < Iron 37100

Manganese 259 Thallium <

MW-52

VOC

Metals

1,4-Dichlorobenzene <

Antimony 2.3 J Iron 1180

Manganese 31.3 Thallium 1.8 J

SW-BKG-LF6

VOC

Metals

1,4-Dichlorobenzene <

Antimony < Iron 1140

Manganese 32.9 Thallium <

SW-BKG-LF16

VOC

Metals

1,4-Dichlorobenzene <

Antimony 1.5 J Iron 42700

Manganese 278 Thallium 4.4 J

MW-53

VOC

Metals

1,4-Dichlorobenzene <

Antimony 2.1 J Iron 11100

Manganese 133 Thallium <

MW-408

VOC

Metals

APPENDIXA Laboratory Reports

04/15/22

Technical Report for

AECOM, INC.

Seymour Johnson AFB LF006; Goldsboro, NC

60417848

SGS Job Number: FA94361

Sampling Date: 03/28/22

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 04/15/22 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

FA94361

mailto:EHS.US.CustomerCare@sgs.com?subject=Customer care improvement idea (report FA94361)

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: FA94361-1: MW-408

4.2: FA94361-2: MW-409

4.3: FA94361-3: MW-51

4.4: FA94361-4: MW-52

4.5: FA94361-5: MW-53

4.6: FA94361-6: TRIP BLANK

4.7: FA94361-7: 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

-2-

Sections:

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 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 MA18566: Hg 12.2: Inst QC MA18584: Al,Sb,As,Ba,Be,Cd,Ca,Cr,Co,Cu,Fe,Pb,Mg,Mn,Ni,K,Se,Ag, Na,Tl,V,Zn 12.3: Inst QC MA18586: Al,Sb,As,Ba,Be,Cd,Ca,Cr,Co,Cu,Fe,Pb,Mg,Mn,Ni,K,Se,Ag, Na,Tl,V,Zn 12.4: Prep QC MP40491: Hg 12.5: Prep QC MP40520: Al,Sb,As,Ba,Be,Cd,Ca,Cr,Co,Cu,Fe,Pb,Mg,Mn,Ni,K,Se,Ag, Na,Tl,V,Zn 12.6: Prep QC MP40528: Al,Sb,As,Ba,Be,Cd,Ca,Cr,Co,Cu,Fe,Pb,Mg,Mn,Ni,K,Se,Ag, Na,Tl,V,Zn 12.7: IDL and Linear Range Summaries

Section 13: Metals Analysis - Raw Data 13.1: Raw Data MA18566 13.2: Raw Data MA18584 13.3: Raw Data MA18586 13.4: Prep Logs

-3-

Sections:

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 MA52184: B 15.2: Prep QC MP32133: B 15.3: IDL and Linear Range Summaries

Section 16: Metals Analysis - Raw Data (SGS Dayton, NJ) 16.1: Raw Data MA52184 16.2: Prep Logs

SGS North America Inc.

Sample Summary

AECOM, INC.

Job No: FA94361

Seymour Johnson AFB LF006; Goldsboro, NC Project No: 60417848

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

FA94361-1 03/28/22 12:38 TB 03/29/22 AQ Ground Water MW-408

FA94361-2 03/28/22 11:30 TB 03/29/22 AQ Ground Water MW-409

FA94361-3 03/28/22 13:50 TB 03/29/22 AQ Ground Water MW-51

FA94361-4 03/28/22 15:00 TB 03/29/22 AQ Ground Water MW-52

FA94361-5 03/28/22 16:25 TB 03/29/22 AQ Ground Water MW-53

FA94361-6 03/28/22 00:00 TB 03/29/22 AQ Trip Blank Water TRIP BLANK

FA94361-7 03/28/22 00:00 TB 03/29/22 AQ Trip Blank Water TRIP BLANK

SAMPLE DELIVERY GROUP CASE NARRATIVE

Client: AECOM, INC. Job No: FA94361

Site: Seymour Johnson AFB LF006; Goldsboro, NC Report Date 4/15/2022 1:49:34 PM

On 03/29/2022, 5 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 0.8 C. Samples were intact and chemically preserved, unless noted below. A SGS North America Inc. - Orlando Job Number of FA94361 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: VI2512 FA94361-6: Sample vial(s) contained bubbles greater than 6mm. Confirmation run.

FA94361-7: Sample vial(s) contained bubbles greater than 6mm. Confirmation run.

Matrix: AQ Batch ID: VI2514 Sample(s) FA94726-1MS, FA94726-1MSD were used as the QC samples indicated.

FA94361-1 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-1 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-2 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-2 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-3 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-3 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-4 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-4 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-5 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-5 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-6 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-6 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-6: Sample vial(s) contained bubbles greater than 6mm.

FA94361-7 for Dichlorodifluoromethane: Associated CCV and ECC outside DOD QSM control limits high, sample was ND.

FA94361-7 for Vinyl Chloride: Associated CCV outside DOD QSM control limits high, sample was ND.

FA94361-7: Sample vial(s) contained bubbles greater than 6mm.

MS Semi-volatiles By Method SW846 8270E Matrix: AQ Batch ID: OP90539 Sample(s) FA94323-5MS, FA94323-5MSD were used as the QC samples indicated.

Blank Spike Recovery(s) for Butyl Benzyl Phthalate, Isophorone, Benzyl Alcohol are outside control limits.

OP90539-BS for 2-Methylnaphthalene: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for 2-Nitroaniline: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for 3,3'-Dichlorobenzidine: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for 3-Nitroaniline: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for 4-Chloroaniline: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for 4-Nitroaniline: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for Benzyl Alcohol: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for Carbazole: Spike recoveries calculated from actual spike mix concentration.

OP90539-BS for Dibenzofuran: Spike recoveries calculated from actual spike mix concentration.

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

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

FA94361-1 for 2-Nitroaniline: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for 4-Nitrophenol: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for Benzoic Acid: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for bis(2-Chloroethyl)ether: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for Butyl Benzyl Phthalate: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for Isophorone: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for N-Nitrosodi-n-propylamine: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for Phenol: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for 2-Nitroaniline: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for 4-Nitrophenol: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for Benzoic Acid: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for bis(2-Chloroethyl)ether: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for Butyl Benzyl Phthalate: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for Isophorone: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for N-Nitrosodi-n-propylamine: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for Phenol: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for 2-Nitroaniline: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for 4-Nitrophenol: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for Benzoic Acid: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for bis(2-Chloroethyl)ether: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for Butyl Benzyl Phthalate: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for Isophorone: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for N-Nitrosodi-n-propylamine: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for Phenol: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for 2-Nitroaniline: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for 4-Nitrophenol: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for Benzoic Acid: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for bis(2-Chloroethyl)ether: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for Butyl Benzyl Phthalate: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for Isophorone: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for N-Nitrosodi-n-propylamine: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for Phenol: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for 2-Nitroaniline: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for 4-Nitrophenol: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for Benzoic Acid: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for bis(2-Chloroethyl)ether: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for Butyl Benzyl Phthalate: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for Isophorone: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for N-Nitrosodi-n-propylamine: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for Phenol: Associated CCV outside of control limits high, sample was ND.

GC/LC Semi-volatiles By Method SW846 8081B Matrix: AQ Batch ID: OP90550 Sample(s) FA94361-2MS, FA94361-2MSD were used as the QC samples indicated.

FA94361-1 for 4,4'-DDT: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for Endrin: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for gamma-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for alpha-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for gamma-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for Endrin: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for gamma-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for alpha-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for 4,4'-DDT: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for alpha-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for 4,4'-DDT: Associated CCV outside of control limits high, sample was ND.

FA94361-1 for Dieldrin: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for gamma-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-5 for Dieldrin: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for Endrin: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for Endrin: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for 4,4'-DDT: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for alpha-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for Endrin: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for 4,4'-DDT: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for alpha-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for Dieldrin: Associated CCV outside of control limits high, sample was ND.

FA94361-3 for Dieldrin: Associated CCV outside of control limits high, sample was ND.

FA94361-4 for gamma-Chlordane: Associated CCV outside of control limits high, sample was ND.

FA94361-2 for Dieldrin: Associated CCV outside of control limits high, sample was ND.

Metals Analysis By Method SW846 6010D Matrix: AQ Batch ID: MP40520 Sample(s) FA94361-1DUP, FA94361-1MS, FA94361-1MSD, FA94361-1PS, FA94361-1SDL, were used as the QC samples for metals.

RPD(s) for Duplicate for Antimony, Arsenic, Chromium, Selenium, Silver are outside control limits for sample MP40520-D1.

RPD acceptable due to low duplicate and sample concentrations.

RPD(s) for Serial Dilution for Aluminum, Antimony, Arsenic, Barium, Cobalt, Selenium, Silver, Vanadium are outside control limits for sample MP40520-SD1. Percent difference acceptable due to low initial sample concentration (< 50 times IDL).

Sample(s) FA94361-3, FA94361-4 are for Lead have elevated reporting limit(s) due to matrix interference.

Matrix: AQ Batch ID: MP40528 Sample(s) FA94618-1DUP, FA94618-1MS, FA94618-1MSD, FA94618-1PS, FA94618-1SDL, were used as the QC samples for metals.

RPD(s) for Duplicate for Aluminum, Antimony, Arsenic, Cobalt are outside control limits for sample MP40528-D1. High RPD due to possible sample non-homogeneity.

RPD(s) for Serial Dilution for Arsenic, Beryllium, Cobalt, Copper, Lead, Magnesium, Nickel, Zinc are outside control limits for sample MP40528-SD1. Percent difference acceptable due to low initial sample concentration (< 50 times IDL).

MP40528-D1 for Cobalt: RPD acceptable due to low duplicate and sample concentrations.

MP40528-D1 for Arsenic: RPD acceptable due to low duplicate and sample concentrations.

MP40528-D1 for Antimony: RPD acceptable due to low duplicate and sample concentrations.

Matrix: AQ Batch ID: N:MP32133 FA94361-1 for Boron: Analysis performed at SGS Dayton, NJ.

FA94361-2 for Boron: Analysis performed at SGS Dayton, NJ.

FA94361-3 for Boron: Analysis performed at SGS Dayton, NJ.

FA94361-4 for Boron: Analysis performed at SGS Dayton, NJ.

FA94361-5 for Boron: Analysis performed at SGS Dayton, NJ.

Metals Analysis By Method SW846 7470A Matrix: AQ Batch ID: MP40491 Sample(s) FA94341-9FDUP, FA94341-9FMS, FA94341-9FMSD, FA94341-9FSDL 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.