GFI for Inquiry #8353815_Tech Memo_PRELIM DRAFT_Biodegradation Injections_2-24-20.pdf

Contract Number: FA8903-19-C-0018

KOMAN Government Solutions, LLC February 2020

DRAFT TECHNICAL MEMORANDUM

IN-SITU ENHANCED BIODEGRADATION INJECTIONS, SITE LF002

TO: Donald Wheeler, Program Manager/COR – AFCEC/CZRX Stephen Whatley, Restoration Program Manager – AFCEC/CZOW

FROM: Brian R. Mosley, P.G. - Project Manager KOMAN Government Solutions, LLC (KGS)

DATE: 24 February 2020

SUBJECT: In-Situ Enhanced Biodegradation Injections at Site LF002

Joint Base San Antonio - Camp Bullis, Texas Contract No. FA8903-19-C-0018

1.0 INTRODUCTION

KOMAN Government Solutions, LLC (KGS) has prepared this Technical Memorandum documenting the completion of field activities for In-Situ Enhanced Biodegradation Injections at Site LF002, Joint Base San Antonio (JBSA) - Camp Bullis, Texas. The project was awarded under Contract No. FA8903-19-C-0018 in June 2019. Field activities were conducted between September – November 2019.

Site LF002 (also known as Site 8) was previously operated as a trench-and-fill landfill for disposal of various mission-related wastes. Chlorinated volatile organic compounds (VOCs) resulting from buried wastes have been investigated in groundwater surrounding and downgradient of the site. In-situ enhanced bioremediation injections were conducted in 2008 at the site, in accordance with a Texas Commission on Environmental Quality (TCEQ)-approved Response Action Plan (RAP).

The scope of work (SOW) for this project included a second injection event to further enhance the reductive dechlorination of VOCs in the impacted groundwater. The scope specified the injection of 25,000 gallons of amendment per well, for a total of 125,000 gallons. Injection activities, which are discussed in detail in this Technical Memorandum, were conducted in accordance with the Final RAP, Site 8, Landfill 8, Camp Bullis, Texas dated August 2009, as well as the Final Quality Management Plan (QMP), In-situ Enhanced Biodegradation Injections

– Site LF002, dated August 2019. A copy of the QMP approval letter from the TCEQ is provided as Attachment 1.

2.0 SITE SETTING

Camp Bullis, established in 1917, comprises 27,990 acres in Bexar County, Texas, approximately 15 miles northwest of downtown San Antonio (Figure 1). Camp Bullis provides Base Operations Support and Training Support to JBSA Mission Partners in order to sustain their Operational and Institutional training requirements.

stephen.whatley Stamp for Prelim

Technical Memorandum In-Situ Enhanced Biodegradation Injections, Site LF002

Joint Base San Antonio – Camp Bullis, Texas

Site LF002 is located approximately 4 miles north of the cantonment area at Camp Bullis (Figure 2). The site was used from approximately 1950 to 1955 as a trench-and-fill disposal site for chemical agent identification sets (CAIS), gas masks, medical wastes, and unknown quantities of decontaminating agent, non-corrosive (DANC). DANC is a solution of an active-chlorine compound in a chlorinated solvent, which is used to deactivate chemical agent residues on the CAIS. VOCs, including trichloroethene (TCE), have been detected and extensively investigated in groundwater surrounding and downgradient of the site.

In 2008, five horizontal injection wells were installed to extend beneath the landfill, and in-situ enhanced bioremediation activities were conducted using emulsified vegetable oil (EVO) in accordance with a TCEQ-approved RAP. The wells are constructed of 2-inch fiberglass material and vary in length from 315 feet to 378 feet, with screen sections 95-130 feet long, extending to depths of approximately 15 feet below grade. Copies of the well construction diagrams provided in previous reports are included in Attachment 2.

3.0 SITE PREPARATION

3.1 Notifications / Permits

Notifications were provided to Range Operations to ensure that appropriate Camp Bullis organizations were aware of the location, start time, duration, and nature of activities to be conducted at the work site. Field personnel provided a daily “check-in” with Range Operations at the beginning and end of each workday, which included pick-up and return of radio equipment provided in case emergency contact was required.

Intrusive work was not required as part of the scope. Therefore, no digging permits were obtained from JBSA - Camp Bullis organizations.

The injection task was conducted under TCEQ Class V Underground Injection Permit (5X2600487, approved January 2008), which was obtained for the initial 2008 injection at Camp Bullis. It was determined that the original permit remained valid and in effect; therefore, no additional injection permit was required.

3.2 Vegetation Clearance

The majority of the work area was previously cleared of mature trees at the time of injection well installation, however native grasses several feet high were present which impeded movement and visibility across the site. Tall grass also served to increase safety risks, providing cover for snakes and other potential biological hazards.

Grassy vegetation was cleared in the central working area of the site to allow for more efficient staging and movement of equipment, maximize work production, and provide an unobstructed view of the work area. Vegetation removal was accomplished with a skid-steer loader fitted with a mower attachment. No mature trees were removed or trimmed. Photographs of the site before and after vegetation clearance are provided in Attachment 3 (Photographs 1-4).

3.3 Well Cleaning / Video Survey of Wells

Because the injection wells had not been used or assessed since the original injection event in 2008, there was concern about the overall effectiveness of injection well performance due to clogged screens and/or obstructions or casing breaches by roots. Accordingly, the wells were cleaned using a pressure sprayer to remove residual or congealed vegetable oil and improve well injection performance prior to use. Well cleaning and subsequent video surveys were conducted

24-26 September 2019 by Ellingson-Directional Drilling Technologies (DTD), the company that installed the wells in 2008.

A trailer-mounted 300-gallon water tank was used to transport water from a potable water stand in the cantonment area of Camp Bullis to the site for pressure spraying. Each well was pressure sprayed with a jet nozzle providing approximately 18 gallons per minute (gpm) of wash water at 4000 pounds per square inch (psi). The pressure sprayer and water hose were gradually fed into each well to total well depth. Graduated footage markings on the spray hose were used to determine the approximate location of the jet nozzle within the well. Between four and ten passes of the jetting nozzle were made through the screened section of the wells to clean screen slots and remove congealed oil.

Tan to grey cloudy water with varying degrees of congealed vegetable oil was flushed from the wells during cleaning. Each well displayed improvement in water clarity as well cleaning progressed. Wash water that flowed from the end of the wells was captured in a small catchment basin and pumped to a 6,000-gallon storage tank for future characterization and disposal.

Photographs of the well cleaning operation are provided in Attachment 3. Approximately 4,500 gallons of potable water was pumped into the five wells during cleaning. Approximately 1,300 gallons of water was recovered and containerized for characterization and disposal, indicting a substantial portion of the water was able to pass through the screen interval of the wells during well cleaning.

Following well cleaning, a video survey was conducted to assess the interior condition of wells and the presence/nature of any obstructions. Survey methods consisted of a small diameter video camera connected to a fiberglass rodder that was fed through the well as video images were viewed on a monitor in real time (as well as recorded for future evaluation). Video surveys were conducted on 4 of the 5 wells; well IW-04 had a narrow diameter fitting on the end of the well that would not accommodate the camera.

None of the wells displayed video evidence of significant obstructions or tree root penetrations, although each of the wells surveyed contained standing water in the lower casing and screen interval 1-2 days after the completion of cleaning activities. In general, wells IW-01, IW-02, and IW-03 appeared to be in useable condition, with varying traces of remnant EVO and silty cloudy water in the wells; observations of clear well screen slots were best observed in well IW-02.

Penetration of the video camera in well IW-05 was generally more difficult than in the other wells (presumably due to presence of tacky remnant EVO in the well casing which was observed during well cleaning). Refusal of the camera was encountered just above the screen interval so the condition of the well screen in this well could not be observed.

4.0 INJECTION ACTIVITIES

4.1 Mobilization

Mobilization of equipment and materials took place 14 to 18 October 2019. This included taking delivery and staging twenty-five 275-gallon totes of EVO, two 6,000-gallon mixing tanks, a 2,000-gallon water truck, a Conex storage box, skid-steer forklift, transfer pumps, and all required hoses, fittings, and in-line flow meters. A 40 by 15-foot containment structure was also constructed to hold the EVO totes and prevent a significant release of oil to the ground surface.

The two 6,000-gallon mixing tanks were triple-rinsed with a high-temperature/high-pressure power washer prior to delivery of the tanks to the site. Copies of the mixing tank cleaning certificates are provided in Attachment 4. All equipment and materials were staged in a working configuration that allowed for water truck deliveries and sequential access to EVO totes to replenish mixing tanks in an efficient and orderly process.

4.2 EVO Injection Activities

Injection activities were conducted by a two-person KGS field crew from 19 October 2019 to 5 November 2019. The EVO product used for injection (EOSPRO) was developed specifically for chlorinated contaminant degradation by EOS Remediation, LLC. A copy of the EOSPRO product sheet is provided in Attachment 5.

Mixing and injection of the EVO-water amendment was performed in 5,000-gallon increments, alternating between each of the 5 injection wells. Each batch consist of 275 gallons of EVO from a single tote, mixed with 4,725 gallons of potable water transferred to the site by water truck from a Camp Bullis potable water fill stand. The volume of water added to the tank was determined by manual gauging of fluid height in the tank and use of an “inches-to-gallons” conversion chart attached to the wall of the tank (see Attachment 3, Photograph 16). Water conditioner (ascorbic acid powder) was added to the water to reduce the dissolved oxygen (DO) content and promote anaerobic conditions prior to injection. Batches were generally allowed to stabilize overnight after mixing to insure DO levels below 2.0 mg/L were obtained prior to injection. Copies of the injection batch summary table and data sheets for each 5,000-gallon batch are provided in Attachment 6.

After verifying appropriate DO levels, the mixture was pumped into the well (or gravity fed) at flow rates generally ranging from 10 to 25 gpm. In total, 25 batches of approximately 5,000-gallons of amendment were injected into the five wells. Flow rates and volume of fluids injected were also monitored and recorded using inline flow meters installed at the end of each well.

Difficulties were encountered in obtaining meter flow volume measurements consistent with the volume readings measured from the static fluid levels in the tank, despite multiple attempts to calibrate the meters and trouble-shoot with meter manufacturer representatives. In general, the volume readings on the meters were higher than the 5,000-gallon readings measured from static water levels. A potential reason may have been the inclination of the ends of the injection well where the meters were installed (see Attachment 3, Photograph 18) which may have created an air gap in the line that led to an overestimation of the flow volumes measured through the meter.

Following the completion of the second and fourth rounds of injection, approximately 7.5 liters (2 gallons) of BAC-9, a microbial consortium of Dehalococcoides mccartyi, was injected into each of the five injection wells (a combined total of 15 liters/4 gallons per well, as specified in the 2008 RAP). The BAC-9 consortium is designed to degrade PCE and TCE to ethene. A copy of the BAC-9 product sheet is provided in Attachment 5. The BAC-9 was shipped in a refrigerated metal keg and kept on ice while injections were conducted at the site the same day as delivery. Due to the volume of consortium required for each five-well injection event, the BAC- 9 was delivered at a 7.5x concentration factor, totaling 5 liters (see Attachment 3, Photograph 22). This is the equivalent of 37.5 liters of unconcentrated culture (or the required 7.5 liters for each of the 5 wells). A specified amount of BAC-9 culture (as measured in a graduated cylinder attached to the keg) was injected under a nitrogen gas blanket to limit oxygenation of the culture and maintain required anaerobic environment. Each batch was injected into a clean EVO tote containing approximately 200-gallons of potable water maintained at a DO level of less than 1.0 mg/L. The mixture was then immediately pumped into an injection well for distribution in the subsurface, a process repeated for each of the five wells in both injection events.

In all, approximately 25,000-gallons of EVO-potable water mixture was injected in each of the wells (125,000-gallons total), along with approximately 4-gallons of microbial consortium per well (20-gallons total), as required by the 2008 RAP.

4.3 Demobilization

Following completion of injections activities, all mixing tanks, equipment, and un-used supplies were removed from the site. EVO totes were rinsed clean with a pressure hose immediately following use during injection activities. All 25 totes were transported off-site on 11 November 2019 for recycling by Mauser Packaging Solutions, the manufacturer of the totes. On 12 November 2019, the site was inspected by an Air Force representative and found to be in acceptable condition with no additional actions required (pending removal of a soil drum discussed below). Photographs of the site following demobilization are provided in Attachment 3.

5.0 INVESTIGATION-DERIVED WASTE

5.1 Well Rinse Water

Approximately 1,300 gallons of rinse water was generated during cleaning of wells in September 2019. The water was containerized in a 6,000-gallon holding tank and sampled for waste characterization parameters. A sample was collected on 25 September 2019 and submitted to Eurofins Lancaster Laboratories Environmental for analysis of VOCs by Method 8260C, SVOCs by Method 8270D, and total TX 11 Metals, as requested by Waste Management Covel Gardens facility for waste profiling. Results of analysis are provided in Attachment 7. Following review of sample results by JBSA and Waste Management personnel, the water was transferred by vacuum truck on 25 October 2019 to Covel Gardens disposal facility in San Antonio, Texas for disposal as Class II non-hazardous waste. A copy of the initial waste manifest at the time of transport from the site is provided in Attachment 6.

5.2 Transmission Fluid Release / Soil Disposal

On 20 October 2019, while pumping potable water into a mixing tank at the site, bolts connecting the PTO to the transmission on a United Rentals water truck came loose, resulting in a release of an estimated one gallon of transmission fluid to the ground surface. (Note: the spill does not represent a “reportable quantity” spill under TCEQ guidance.) Soil was excavated around the spill area with a hand shovel and ultimately placed in a 55-gallon drum (excavation area approximately 2 x 3 feet, depth of approximately 3 inches). Photographs of the release area before and after excavation are provided in Attachment 3 (photographs 23 and 24). The total volume of soil removed is estimated at less than 0.2 cu. yds. Circumstances of the spill were reported to AFCEC and JBSA personnel by email on the afternoon of 20 October 2019, and a conference call was subsequently held on 29 October 2019 with AFCEC and JBSA representatives to determine JBSA sampling/analytical requirements.

On 30 October 2019, composite samples were collected by NRC Gulf Environmental Services (environmental response contractor for United Rentals) from the excavated containerized soil and from the underlying in-situ native soil in the area of excavation and submitted to San Antonio Testing Laboratory for the analyses requested by JBSA. The sample collected from the excavated soil was analyzed for TPH by TX-1005 and TCLP Metals/SVOCs/VOCs. The sample collected from in-situ native soil following excavation was analyzed for TPH TX-1005 and TCLP Metals. Results of analyses are provided in Attachment 8. The sample of native soil collected from the excavation area was below detection limits to TX-1005 and displayed TCLP Metals concentrations below detection limits and/or below hazardous waste threshold levels.

Based on these results, no additional actions in the release area were requested of JBSA.

The sample collected from the excavated soil was classified as Class I non-hazardous waste based on the TPH concentration of 2,470 mg/kg. The TCLP VOC/SVOC/Metals results were below hazardous waste threshold levels. The drum of soil was transported to Waste Management Covel Gardens disposal facility on 15 November 2015 for disposal as Class I non-hazardous waste. A copy of the initial waste manifest at the time of transport from the site is provided in Attachment 8.

6.0 LIST OF ATTACHMENTS

Figures and attachments referenced in this Technical Memorandum and provided herein include the following:

• Figure 1 – Area Location Map

• Figure 2 – Site Location Map

• Attachment 1 – TCEQ Approval Letter, Final Quality Management Plan, In-Situ Biodegradation Injections – Site LF002

• Attachment 2 – Well Construction Diagrams for LF002 Horizontal Injections Wells

• Attachment 3 – Photographic Log

• Attachment 4 – Tank Cleaning Certificates

• Attachment 5 – EOS Remediation, LLC Product Sheets for EOSPRO and BAC-9

• Attachment 5 - Injection Batch Summary Table and Field Data Sheets

• Attachment 7 – Waste Manifest and Laboratory Report for Waste Characterization, Injection Well Cleaning Water

• Attachment 8 - Waste Manifest and Laboratory Report for Waste Characterization of Excavated Soil/Analysis of Remaining In-situ Soil in Area of Excavation

Figures

Joint Base San Antonio - Camp Bullis, TX

LF002/Site 8 Location

Date:

07/30/2019

Figure

293 Boston Post Road, S uite 100 Marlborough , MA 01752

KOMAN Government Solutions, LLC Joint Base S an Antonio (JBS A) – Cam p Bullis, TX

Area Location Map

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Fe e t ± San Antonio

JBSA - Camp Bullis, TX

Location Map

File : JBS A_Cam pBullisTX_Fig1_Topo.m xd

Legend

_̂ LF002/S ite 8 Location

Cam p Bullis Bound ary © 2013 National Ge ograph ic S ocie ty, i-cube d U S GS 15" Quad rangle s, Ne w Braunfe ls, Te xas

Marne Road

Lew is V alle y R oa d

Salado Creek

Le wi s C ree k

Cowgill Road

LF002/Site 8 !Ax

Lewis Valley Trail

Le wi s C ree k

Injection Well Work Area

Date:

07/30/2019

Figure

293 Boston Post Road, Suite 100 Marlborough, MA 01752

KOMAN Government Solutions, LLC Join t Base San An ton io (JBSA) – Cam p Bullis, T X

Site Location Map

0 1,000 2,000

Fe e t ± File: JBSA_Cam pBullisT X_Fig2_Ae rial.m xd

Legend

_̂ LF002/Site 8 Location Source: Esri, DigitalGlobe , Ge oEye, Earthstar Ge ographics, CNES/Airbus DS, USDA, USGS, Ae roGRID, IGN, an d the GIS Use r Com m un ity T NRIS . T e xas Rive rs, Stre am s, an d Wate rbod ie s.

2014. T IGER. US Ce n sus Bureau. US Military In stallation . 2015.

Attachment 1

TCEQ Approval Letter, Final Quality Management Plan, In-Situ Biodegradation Injections – Site LF002 Attachment

Attachment 2

Well Construction Diagrams for LF002 Horizontal Injections Wells

Attachment 3

Photographic Log

Attachment 3 - Photographic Log Technical Memorandum - In-Situ Enhanced Biodegradation Injections

Site LF002, Joint Base San Antonio - Camp Bullis

Photo 1 – Work site prior to the start of field activities, looking to the southwest.

Photo 2 – Work site prior to the start of field activities, looking to the northeast.

Photo 3 – Work site after vegetation clearing, looking to the southwest.

Photo 4 – Work site after vegetation clearing, looking to the northeast.

Photo 5 – Purge water generated during well jetting activities.

Photo 6 – Water hose being inserted into injection well during well jetting activities.

Photo 7 – Viewing monitor used during video survey of injection wells.

Photo 8 – Video survey in progress: camera being fed into injection well on duct rodder (foreground) and while video feed is viewed on monitor (background).

Photo 9 – Mobilization and staging of mixing tanks.

Photo 10 – Placement of EVO totes in containment area.

Photo 11 – EVO tote containment area.

Photo 12 – Work area during injection activities, looking to the southwest. Features include (left to right) EVO tote containment area, two 6,000-gallon mixing tanks, hoses connected to injection wells, and 2,000-gallon water truck.

Photo 13 – Water truck being filled at potable water stand.

Photo 14 – Water being transferred from water truck to mixing tank.

Photo 15 – Manual gauging of fluid levels in mixing tank.

Photo 16 – Tank volume gauging chart attached to outer tank wall.

Photo 17 – In-line flow meter used to assess flow rate and volume of fluids pump into injection wells.

Photo 18 – In-line flow meter installed at end of injection well casing. Note inclination of well casing may have resulted in air gap at top of meter piping that resulted in over-estimation of flow volume.

Photo 19 – Pump (left -center) used to inject EVO/potable water fluids from mixing tank to injection well.

Photo 20 – Gravity feeding EVO/potable water fluids into injection well.

Photo 21 – BAC-9 containment vessel (left), graduated cylinder, and nitrogen gas cylinder (right) used to measure and inject BAC-9 into injection wells.

Photo 22 – Tag on BAC-9 containment vessel used to indicate concentration of product.

Photo 23 – Transmission fluid release area immediately following release incident (pre-excavation).

Photo 24 – Transmission fluid release area following soil excavation.

Photo 25 – Demobilization of equipment following the completion of injection activities.

Photo 26 – Loading empty EVO totes on transport trailer for recycling.

Photo 27 – Work site looking to the southwest, following the completion of injection activities and demobilization of all equipment and materials.

Photo 28 – Work site looking to the northeast, following the completion of injection activities and demobilization of all equipment and materials.

Attachment 4

Tank Cleaning Certificates

CLEANING CERTIFICATION

TO: Rain For Rent 3744 SE Loop 410

San Antonio, Texas 78222

CERTIFICATE NUMBER: AFCJ0102019

This certifies that Z-Core Enviromnental & Contracting Services, LLC has satisfactorily completed the certified triple cleaning, wash and hot high-pressure washing services of poly tank # 245674 for Rain for Rent. The ite1n listed was hot pressure washed and cJeaned with a hot high-pressure power system and cleaning solution at temperatures in excess of 220 degrees at maxin1u1n PSI of 3,500.

Date: October 10, 2019 Z-Corc Environme tal & Contracting Service · LLC

Q

Andrew F. Castro, General Managtr

CLEANING CERTIFICATION

TO: Rain For Rent 3744 SE Loop 410

San Antonio, Texas 78222

CERTIFICATE NUMBER: AFC10102019

This certifies that Z-Core Environmental & Contracting Services, LLC has satisfactorily completed the certified triple cleaning, wash and hot high-pressure washing services of poly tank # 245626 for Rain for Rent. The item listed was hot pressure washed and cleaned with a hot high-pressure power system and cleaning solution at temperatures in excess of 220 degrees at maximum PSI of 3,500.

Date: October 10, 2019 t~2 t;;onm_:t & 41racting By: ~ ~

Andrew F. Castro, General Manager

Attachment 5

EOS Remediation, LLC Product Sheets for EOSPRO and BAC-9

Experience you can rely on, Products you can trust™

+1 919.873.2204 www.eosremediation.com

Brad Elkins BElkins@eosremediation.comCopyright© 2016, EOS Remediation, LLC

EOSPRO

• Vitamin B12 and micronutrients

• Slow and fast release substrates

• Engineered for effective transport

• Third party validated

• Food-grade and USDA certified

• 74% fermentable carbon

• Regulatory acceptance

Product Advantages

Enriched emulsified vegetable oil used to stimulate anaerobic bioremediation of chlorinated solvents and other recalcitrant chemicals in contaminated groundwater

Engineered formula of emulsified vegetable oil, nutrients and vitamins optimizes distribution and contaminant degradation

EOS Remediation

Oil Emulsion Concentrate: EOSPRO

Refined and Bleached US Soybean Oil (% by wt.)

Rapidly Biodegradable Soluble Substrate (% by wt.)

Other Organics (emulsifiers, food additives, etc.) (% by wt.)

Specific Gravity pH (Standard Units) Median Oil Droplet Size (microns) Organic Carbon (% by wt.)

Mass of Hydrogen Produced (lbs. H2 per lbs. EOSPRO)

Typical 59.8

0.96 - 0.98 6 - 7 1.0

0.25

Shipped in 55-gallon drums, 275-gallon IBC totes or bulk tankers (40,000 lbs.)

EOSPRO is shipped as a ready-to-use concentrated emulsion that can be diluted with water in the field to prepare a high quality suspension for easy injection. EOSPRO has a low viscosity and can be distributed with commonly available pumps or by continuous metering with a diluter (e.g., Dosatron™). Dilution ratios for EOSPRO typically range from 4:1 to 20:1 (water:

EOSPRO) depending on site conditions. EOSPRO injections should be followed with additional chase water to maximize distribution of EOSPRO into the formation.

EOSPRO can be injected with EOSQR, CoBupHMg or BAC-9. Call us for more details.

For best performance, use EOSPRO as shipped, within 60 days of delivery and store at a temperature between 40°F (4°C) to 100°F (38°C).

+1 919.873.2204 www.eosremediation.com Copyright© 2016, EOS Remediation, LLC

EOS PRO

Description

Chemical & Physical

Properties

Packaging

Handling & Storage

EOSPRO is a nutrient-enriched, DoD-validated, emulsified vegetable oil (EVO). EOSPRO is engineered to quickly stimulate microbial activity while providing long-term nourishment to enhance anaerobic bioremediation of chlorinated solvents, nitrates, perchlorate, energetics, acid mine drainage, and other recalcitrant chemicals in contaminated groundwater. EOSPRO can also be used to reduce redox sensitive metals and radionuclides. The negative surface charges on the droplets combined with small droplet size promote effective transport in the subsurface.

EOSPRO benefits include:

• Vitamin B-12 and micro-nutrients

• Rapidly-biodegradable substrates to “jump start” bacterial growth

• Slow release biodegradable substrates to promote long-term biological activity

• Engineered for effective transport in the subsurface

• Small oil droplet size

• Negative surface charge

• Extensive third-party validation

EOSPRO incorporates the patented EOS® technologies that clients have trusted for more than a decade. Domestic supply made in the USA with US farmed soybeans.

Rev. 5.2016

Technical Information Emulsified Oils Family

+1 919.873.2204 www.eosremediation.com

Brad Elkins BElkins@eosremediation.comCopyright© 2016, EOS Remediation, LLC

BAC-9

• High cell concentration: 1011 Cells/L

• Direct injection for in situ treatment of chlorinated ethenes

• Degrades: PCE, TCE, cis & trans- DCE, VC, Freon 113, mixed plumes containing 1,1,1-TCA & 1,1,2-TCA, dichloroethane isomers, CT, chloroform, and bromine compounds

Product Advantages

Enriched bioaugmentation culture capable of degrading chlorinated solvents to innocuous compounds via halorespiration

A microbial consortium of Dehalococcoides mccartyi enriched to degrade PCE and TCE completely to ethene

Experience you can rely on, Products you can trust™EOS Remediation

Bioaugmentation Culture: BAC-9 Microbial consortium including Dehalococcoides mccartyi and enzymes in a water-based medium

Typical

1011 Cells/L

Shipped in 19 liter pressurized soda keg. Orders greater than 19 liters are concentrated up to 10-fold to significantly reduce shipping and supply costs for your project. Actual volumes and concentration factor will be written on a hang tag attached with the keg.

See the EOS® website for an instructional video on BAC-9 handling and injection procedure.

BAC-9 is shipped overnight direct to your site in a chilled cooler. Your BAC-9 delivery includes: instruction manual, delivery cylinder (request 1, 2 or 3.5 liter) with quick connects and ¼” ID tubing hose barbs. An inert gas (Nitrogen or Argon) cylinder, regulator, and additional tubing to reach the injection point are required but not included.

BAC-9 must be stored at 4oC (40oF) and can remain usable for up-to three weeks from delivery.

+1 919.873.2204 www.eosremediation.com Copyright© 2016, EOS Remediation, LLC

BAC-9

Description

Chemical & Physical

Properties

Packaging

Handling & Storage

BAC-9 is an enriched bioaugmentation culture capable of degrading chlorinated solvents to innocuous compounds efficiently via halorespiration.

Applications:

• Direct injection for in situ treatment of chlorinated ethenes

• Inoculation of on-site bioreactors

• Degrades: tetrachloroethylene (PCE), trichloroethene, (TCE), dichloroethene isomers (cis & trans-DCE), vinyl chloride (VC), Freon 113, mixed plumes containing trichloroethane (1,1,1-TCA & 1,1,2-TCA), dichloroethane isomers, carbon tetrachloride (CT), chloroform, and bromine compounds (carbon tetrabromide, bromoform, ethylene dibromide (EDB) and bromoethane)

Rev. 5.2016

Technical Information Bioaugmentation Cultures & Media

Attachment 6

Injection Batch Summary Table and Field Data Sheets

Table 1 - Batch Mix and Injection Data LF002 2019 Injection Event

JBSA - Camp Bullis, Texas

Start of Mix Volume in Mix (gal) Start of Injection End of Injection Date Time Water EVO Date Time Date Time

Injection Well IW-01 IW-01-01 18-Oct-19 1445 4725 275 19-Oct-19 1158 19-Oct-19 1800 4852 13 GPM IW-01-02 22-Oct-19 0930 4725 275 23-Oct-19 0740 23-Oct-19 1300 5765 16.3 GPM IW-01-03 28-Oct-19 0940 4725 275 29-Oct-19 1438 31-Oct-19 1757 5039 24-28 GPM IW-01-04 1-Nov-19 1230 4725 275 2-Nov-19 0708 2-Nov-19 1100 4715 26 GPM IW-01-05 4-Nov-19 1310 4725 275 5-Nov-19 1104 5-Nov-19 1544 5759 28 GPM

Injection Well IW-02 IW-02-01 20-Oct-19 1405 4725 275 21-Oct-19 0758 21-Oct-19 1230 5303 19 GPM IW-02-02 23-Oct-19 1305 4725 275 24-Oct-19 0818 24-Oct-19 1310 5623 24 GPM IW-02-03 30-Oct-19 0830 4725 275 31-Oct-19 0740 31-Oct-19 1105 5190 22 GPM IW-02-04 3-Nov-19 0830 4725 275 4-Nov-19 0738 4-Nov-19 1302 4963 15-29 GPM IW-02-05 5-Nov-19 1600 4725 275 6-Nov-19 0735 6-Nov-19 1149 5083 26 GPM

Injection Well IW-03 IW-03-01 22-Oct-19 0930 4725 275 23-Oct-19 0732 23-Oct-19 1103 5815 25 GPM IW-03-02 24-Oct-19 1430 4725 275 25-Oct-19 0727 25-Oct-19 1048 5553 24 GPM IW-03-03 31-Oct-19 1125 4725 275 1-Nov-19 0743 1-Nov-19 1222 5400 20 GPM IW-03-04 3-Nov-19 0830 4725 275 4-Nov-19 0740 4-Nov-19 1116 5924 31 GPM IW-03-05 6-Nov-19 1200 4725 275 7-Nov-19 733 7-Nov-19 1043 5487 23 GPM

Injection Well IW-04 IW-04-01 19-Oct-19 1656 4725 275 20-Oct-19 0930 20-Oct-19 1515 5466 11-17 GPM IW-04-02 24-Oct-19 1235 4725 275 25-Oct-19 0725 25-Oct-19 1140 5583 23 GPM IW-04-03 30-Oct-19 0830 4725 275 31-Oct-19 0737 31-Oct-19 1210 5663 23 GPM IW-04-04 1-Nov-19 1040 4725 275 2-Nov-19 0710 2-Nov-19 1235 4618 11-20 GPM IW-04-05 5-Nov-19 1425 4725 275 6-Nov-19 0732 6-Nov-19 1157 5759 27GPM

Injection Well IW-05 IW-05-01 18-Oct-19 1111 4725 275 19-Oct-19 1115 19-Oct-19 1620 5212 17 GPM IW-05-02 23-Oct-19 1115 4725 275 24-Oct-19 0815 24-Oct-19 1205 4660 21 GPM IW-05-03 28-Oct-19 0940 4725 275 29-Oct-19 1448 31-Oct-19 1731 5355 27 GPM IW-05-04 31-Oct-19 1225 4725 275 1-Nov-19 0740 1-Nov-19 1031 5059 28 GPM IW-05-05 4-Nov-19 1220 4725 275 5-Nov-19 1140 5-Nov-19 1422 6015 29 GPM

Flow Meter Volume (gal)

Average Flow Rate

Batch No.

Attachment 7

Waste Manifest and Laboratory Report for Waste Characterization, Injection Well Cleaning Water

ANALYSIS REPORT

Prepared by:

Eurofins Lancaster Laboratories Environmental 2425 New Holland Pike Lancaster, PA 17601

Prepared for:

Koman Government Services 293 Boston Post Road West

Suite 100 Marlborough MA 01752

Report Date: October 01, 2019 17:57

Project: Camp Bullis, TX

Account #: 44708 Group Number: 2065990

SDG: KGS01

PO Number: 19-844

State of Sample Origin: TX

Electronic Copy To Koman Government Services Attn: Laurie Ekes Electronic Copy To Koman Government Services Attn: Brian Mosley

Respectfully Submitted,

(717) 556-7264

To view our laboratory's current scopes of accreditation please go to https://www.eurofinsus.com/environment-testing/laboratories/eurofins-lancaster-laboratories-environmental/certifications-and-accreditations-eurofins-lancaster-laboratories-environmental/ . Historical copies may be requested through your project manager.

SAMPLE INFORMATION

Client Sample Description

Sample Collection

Date/Time

ELLE#

IDW-LF02-25092019 Grab Groundwater 09/25/2019 15:58 1160184 Trip Blank Water 09/25/2019 1160185

The specific methodologies used in obtaining the enclosed analytical results are indicated on the Laboratory Sample Analysis Record.

Project Name: Camp Bullis, TX

ELLE Group #: 2065990

General Comments:

See the Laboratory Sample Analysis Record section of the Analysis Report for the method references.

All QC met criteria unless otherwise noted in an Analysis Specific Comment below.

Refer to the QC Summary for specific values and acceptance criteria.

Project specific QC samples are not included in this data set.

Matrix QC may not be reported if site-specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD was performed, unless otherwise specified in the method.

Surrogate recoveries (if applicable) which are outside of the QC window are confirmed unless attributed to a dilution or otherwise noted in an Analysis Specific Comment below.

The samples were received at the appropriate temperature and in accordance with the chain of custody unless otherwise noted.

Analysis Specific Comments:

SW-846 8260C, GC/MS Volatiles

Sample #s: 1160184

Reporting limits were raised due to sample foaming.

SW-846 8270D, GC/MS Semivolatiles

Sample #s: 1160184

The QC limits for 1,4-Phenylenediamine are advisory. It is a known poor performer.

Batch #: 19273WAF026 (Sample number(s): 1160184)

The recovery(ies) for the following analyte(s) in the LCS and/or LCSD were below the acceptance window:

1,4-Phenylenediamine

The relative percent difference(s) for the following analyte(s) in the LCS/LCSD were outside acceptance windows: Dimethoate

SW-846 7470A, Metals

Batch #: 192690571307 (Sample number(s): 1160184 UNSPK: 1160184 BKG: 1160184)

The recovery(ies) for the following analyte(s) in the MS and/or MSD were below the acceptance window:

Mercury

ELLE Sample #: GW 1160184 ELLE Group #: 2065990 Matrix: Groundwater

Sample Description: IDW-LF02-25092019 Grab Groundwater Camp Bullis, TX

Project Name: Camp Bullis, TX

Collection Date/Time: 09/25/2019 15:58

SDG#: KGS01-01

Submittal Date/Time: 09/26/2019 10:52

Limit of Quantitation

Method Detection Limit* Result Analysis Name CAS Number

Dilution Factor

CAT

No.

ug/l ug/l ug/l SW-846 8260C GC/MS Volatiles 270 10 67-64-1 11997 7 200 Acetone

N.D. 10 75-05-8 11997 160 1,000 Acetonitrile¹

N.D. 10 107-13-1 11997 3 200 Acrylonitrile¹

N.D. 10 71-43-2 11997 2 10 Benzene

N.D. 10 75-27-4 11997 2 10 Bromodichloromethane

N.D. 10 75-25-2 11997 10 40 Bromoform

N.D. 10 74-83-9 11997 3 10 Bromomethane

14 J 10 78-93-3 11997 3 100 2-Butanone

N.D. 10 75-15-0 11997 2 50 Carbon Disulfide

N.D. 10 56-23-5 11997 2 10 Carbon Tetrachloride

N.D. 10 108-90-7 11997 2 10 Chlorobenzene

N.D. 10 67-66-3 11997 2 10 Chloroform

N.D. 10 106-93-4 11997 2 10 1,2-Dibromoethane

N.D. 10 106-46-7 11997 2 50 1,4-Dichlorobenzene

N.D. 10 75-71-8 11997 2 10 Dichlorodifluoromethane

N.D. 10 107-06-2 11997 3 10 1,2-Dichloroethane

N.D. 10 75-35-4 11997 2 10 1,1-Dichloroethene

N.D. 10 10061-02-6 11997 2 10 trans-1,3-Dichloropropene

N.D. 10 542-75-6 11997 4 20 1,3-Dichloropropene (total)¹

N.D. 10 123-91-1 11997 290 2,500 1,4-Dioxane

N.D. 10 100-41-4 11997 4 10 Ethylbenzene

N.D. 10 87-68-3 11997 20 50 Hexachlorobutadiene

N.D. 10 78-83-1 11997 360 2,500 Isobutyl Alcohol¹

N.D. 10 126-98-7 11997 60 500 Methacrylonitrile¹

N.D. 10 108-10-1 11997 5 100 4-Methyl-2-pentanone

N.D. 10 75-09-2 11997 3 10 Methylene Chloride

N.D. 10 100-42-5 11997 2 50 Styrene

N.D. 10 630-20-6 11997 2 10 1,1,1,2-Tetrachloroethane

N.D. 10 79-34-5 11997 2 10 1,1,2,2-Tetrachloroethane

N.D. 10 127-18-4 11997 2 10 Tetrachloroethene

N.D. 10 108-88-3 11997 2 10 Toluene

N.D. 10 120-82-1 11997 3 50 1,2,4-Trichlorobenzene

N.D. 10 71-55-6 11997 3 10 1,1,1-Trichloroethane

N.D. 10 79-00-5 11997 2 10 1,1,2-Trichloroethane

N.D. 10 79-01-6 11997 2 10 Trichloroethene

N.D. 10 75-69-4 11997 2 10 Trichlorofluoromethane

N.D. 10 96-18-4 11997 2 50 1,2,3-Trichloropropane¹

N.D. 10 75-01-4 11997 2 10 Vinyl Chloride

N.D. 10 1330-20-7 11997 14 60 Xylene (Total)

Reporting limits were raised due to sample foaming.

ug/l ug/l ug/l SW-846 8270D GC/MS Semivolatiles

*=This limit was used in the evaluation of the final result

ELLE Group #: 2065990 Matrix: Groundwater

Sample Description: IDW-LF02-25092019 Grab Groundwater Camp Bullis, TX

Project Name: Camp Bullis, TX

Collection Date/Time: 09/25/2019 15:58

Method Detection Limit* Result Analysis Name CAS Number

Dilution Factor

CAT

No.

ug/l ug/l ug/l SW-846 8270D GC/MS Semivolatiles N.D. 1 83-32-9 14241 0.1 0.5 Acenaphthene

N.D. 1 98-86-2 14241 4 10 Acetophenone

N.D. 1 62-53-3 14241 3 10 Aniline

N.D. 1 120-12-7 14241 0.1 0.5 Anthracene

N.D. 1 92-87-5 14241 21 62 Benzidine

N.D. 1 85-68-7 14241 2 5 Butylbenzylphthalate

N.D. 1 84-74-2 14241 2 5 Di-n-butylphthalate

N.D. 1 59-50-7 14241 0.5 2 4-Chloro-3-methylphenol

N.D. 1 111-44-4 14241 0.5 2 bis(2-Chloroethyl)ether

N.D. 1 95-57-8 14241 0.5 2 2-Chlorophenol

N.D. 1 91-94-1 14241 3 10 3,3'-Dichlorobenzidine

N.D. 1 120-83-2 14241 0.5 2 2,4-Dichlorophenol

N.D. 1 84-66-2 14241 2 5 Diethylphthalate

N.D. 1 60-51-5 14241 3 10 Dimethoate

N.D. 1 105-67-9 14241 3 10 2,4-Dimethylphenol

N.D. 1 99-65-0 14241 2 5 1,3-Dinitrobenzene

N.D. 1 51-28-5 14241 14 31 2,4-Dinitrophenol

N.D. 1 25321-14-6 14241 1 5 2,4_2,6-Dinitrotoluenes

N.D. 1 122-66-7 14241 0.5 2 1,2-Diphenylhydrazine

110 1 117-81-7 14241 5 11 bis(2-Ethylhexyl)phthalate

N.D. 1 206-44-0 14241 0.1 0.5 Fluoranthene

N.D. 1 86-73-7 14241 0.1 0.5 Fluorene

N.D. 1 118-74-1 14241 0.1 0.5 Hexachlorobenzene

N.D. 1 87-68-3 14241 0.5 2 Hexachlorobutadiene

N.D. 1 77-47-4 14241 5 11 Hexachlorocyclopentadiene

N.D. 1 67-72-1 14241 1 5 Hexachloroethane

N.D. 1 78-59-1 14241 0.5 2 Isophorone

N.D. 1 95-48-7 14241 0.5 2 2-Methylphenol

24 1 106-44-5 14241 0.5 2 4-Methylphenol

3-Methylphenol and 4-methylphenol cannot be resolved under the chromatographic conditions used for sample analysis. The result reported for 4-methylphenol represents the combined total of both compounds.

N.D. 1 n.a. 14241 0.7 3 NDPA as diphenylamine

N-nitrosodiphenylamine decomposes in the GC inlet forming diphenylamine. The result reported for N-nitrosodiphenylamine represents the combined total of both compounds.

N.D. 1 98-95-3 14241 0.5 2 Nitrobenzene

N.D. 1 924-16-3 14241 12 26 N-Nitrosodi-n-butylamine

N.D. 1 621-64-7 14241 0.7 3 N-Nitroso-di-n-propylamine

N.D. 1 86-30-6 14241 0.7 3 N-Nitrosodiphenylamine

N-nitrosodiphenylamine decomposes in the GC inlet forming diphenylamine. The result reported for N-nitrosodiphenylamine represents the combined total of both compounds.

ELLE Group #: 2065990 Matrix: Groundwater

Sample Description: IDW-LF02-25092019 Grab Groundwater Camp Bullis, TX

Project Name: Camp Bullis, TX

Collection Date/Time: 09/25/2019 15:58

Method Detection Limit* Result Analysis Name CAS Number

Dilution Factor

CAT

No.

ug/l ug/l ug/l SW-846 8270D GC/MS Semivolatiles N.D. 1 10595-95-6 14241 2 5 N-Nitrosomethylethylamine

N.D. 1 930-55-2 14241 0.5 2 N-Nitrosopyrrolidine

N.D. 1 56-38-2 14241 4 10 Parathion

N.D. 1 608-93-5 14241 0.5 2 Pentachlorobenzene

N.D. 1 82-68-8 14241 2 5 Pentachloronitrobenzene

N.D. 1 87-86-5 14241 1 5 Pentachlorophenol

N.D. 1 108-95-2 14241 0.5 2 Phenol

N.D. 1 106-50-3 14241 77 310 1,4-Phenylenediamine

N.D. 1 23950-58-5 14241 0.5 2 Pronamide

N.D. 1 129-00-0 14241 0.1 0.5 Pyrene

N.D. 1 110-86-1 14241 2 5 Pyridine

N.D. 1 58-90-2 14241 4 10 2,3,4,6-Tetrachlorophenol

N.D. 1 95-95-4 14241 0.5 2 2,4,5-Trichlorophenol

N.D. 1 88-06-2 14241 0.5 2 2,4,6-Trichlorophenol

The QC limits for 1,4-Phenylenediamine are advisory. It is a known poor performer.

mg/l mg/l mg/l SW-846 6010C Metals N.D. 1 7440-36-0 07044 0.0160 0.0500 Antimony¹

N.D. 1 7440-38-2 07035 0.0160 0.0300 Arsenic¹

0.0562 1 7440-39-3 07046 0.0010 0.0050 Barium¹

N.D. 1 7440-41-7 07047 0.0010 0.0050 Beryllium¹

0.0082 1 7440-43-9 07049 0.0010 0.0050 Cadmium¹

0.0061 J 1 7440-47-3 07051 0.0016 0.0150 Chromium¹

N.D. 1 7439-92-1 07055 0.0071 0.0150 Lead¹

0.0077 J 1 7440-02-0 07061 0.0021 0.0100 Nickel¹

N.D. 1 7782-49-2 07036 0.0160 0.0500 Selenium¹

N.D. 1 7440-22-4 07066 0.0050 0.0100 Silver¹ mg/l mg/l mg/l SW-846 7470A N.D. 1 7439-97-6 00259 0.000050 0.00020 Mercury

Sample Comments State of Texas Lab Certification No. T104704194-19-34

¹ = This analyte was not on the laboratory's TCEQ Scope of Accreditation at the time of analysis.

Laboratory Sample Analysis Record

Analyst Dilution Factor

Trial# Batch# Analysis Date and Time

CAT

No.

Analysis Name Method

11997 Texas Class 2 VOCs SW-846 8260C 1 L192741AA 10/01/2019 13:03 Corie Mellinger 10

ELLE Group #: 2065990 Matrix: Groundwater

Sample Description: IDW-LF02-25092019 Grab Groundwater Camp Bullis, TX

Project Name: Camp Bullis, TX

Collection Date/Time: 09/25/2019 15:58

SDG#: KGS01-01

Submittal Date/Time: 09/26/2019 10:52

Laboratory Sample Analysis Record

Analyst Dilution Factor

Trial# Batch# Analysis Date and Time

CAT

No.

Analysis Name Method

01163 GC/MS VOA Water Prep SW-846 5030C 1 L192741AA 10/01/2019 13:02 Corie Mellinger 10 14241 Texas Class 2 SVOCs SW-846 8270D 1 19273WAF026 10/01/2019 14:55 Edward C Monborne 1 11010 8270D BNA Extraction SW-846 3510C 1 19273WAF026 09/30/2019 15:50 Osvaldo R Sanchez 1 07044 Antimony SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07035 Arsenic SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07046 Barium SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07047 Beryllium SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07049 Cadmium SW-846 6010C 1 192691404407 10/01/2019 11:00 Lisa J Cooke 1 07051 Chromium SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07055 Lead SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07061 Nickel SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07036 Selenium SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 07066 Silver SW-846 6010C 1 192691404407 09/29/2019 17:35 Elaine F Stoltzfus 1 00259 Mercury SW-846 7470A 1 192690571307 09/30/2019 07:01 Damary Valentin 1 14044 ICP-WW, 3005A (tot rec) - U345 SW-846 3005A 1 192691404407 09/27/2019 07:29 James L Mertz 1

05713 WW SW846 Hg Digest SW-846 7470A 1 192690571307 09/27/2019 19:10 Barbara A Kane 1

ELLE Sample #: GW 1160185 ELLE Group #: 2065990 Matrix: Water

Sample Description: Trip Blank Water Camp Bullis, TX

Project Name: Camp Bullis, TX

Collection Date/Time: 09/25/2019

SDG#: KGS01-02TB

Method Detection Limit* Result Analysis Name CAS Number

Dilution Factor

CAT

No.

ug/l ug/l ug/l SW-846 8260C GC/MS Volatiles N.D. 1 67-64-1 11997 0.7 20 Acetone

N.D. 1 75-05-8 11997 16 100 Acetonitrile¹

N.D. 1 107-13-1 11997 0.3 20 Acrylonitrile¹

N.D. 1 71-43-2 11997 0.2 1 Benzene

N.D. 1 75-27-4 11997 0.2 1 Bromodichloromethane

N.D. 1 75-25-2 11997 1 4 Bromoform

N.D. 1 74-83-9 11997 0.3 1 Bromomethane

N.D. 1 78-93-3 11997 0.3 10 2-Butanone

N.D. 1 75-15-0 11997 0.2 5 Carbon Disulfide

N.D. 1 56-23-5 11997 0.2 1 Carbon Tetrachloride

N.D. 1 108-90-7 11997 0.2 1 Chlorobenzene

N.D. 1 67-66-3 11997 0.2 1 Chloroform

N.D. 1 106-93-4 11997 0.2 1 1,2-Dibromoethane

N.D. 1 106-46-7 11997 0.2 5 1,4-Dichlorobenzene

N.D. 1 75-71-8 11997 0.2 1 Dichlorodifluoromethane

N.D. 1 107-06-2 11997 0.3 1 1,2-Dichloroethane

N.D. 1 75-35-4 11997 0.2 1 1,1-Dichloroethene

N.D. 1 10061-02-6 11997 0.2 1 trans-1,3-Dichloropropene

N.D. 1 542-75-6 11997 0.4 2 1,3-Dichloropropene (total)¹

N.D. 1 123-91-1 11997 29 250 1,4-Dioxane

N.D. 1 100-41-4 11997 0.4 1 Ethylbenzene

N.D. 1 87-68-3 11997 2 5 Hexachlorobutadiene

N.D. 1 78-83-1 11997 36 250 Isobutyl Alcohol¹

N.D. 1 126-98-7 11997 6 50 Methacrylonitrile¹

N.D. 1 108-10-1 11997 0.5 10 4-Methyl-2-pentanone

N.D. 1 75-09-2 11997 0.3 1 Methylene Chloride

N.D. 1 100-42-5 11997 0.2 5 Styrene

N.D. 1 630-20-6 11997 0.2 1 1,1,1,2-Tetrachloroethane

N.D. 1 79-34-5 11997 0.2 1 1,1,2,2-Tetrachloroethane

N.D. 1 127-18-4 11997 0.2 1 Tetrachloroethene

N.D. 1 108-88-3 11997 0.2 1 Toluene

N.D. 1 120-82-1 11997 0.3 5 1,2,4-Trichlorobenzene

N.D. 1 71-55-6 11997 0.3 1 1,1,1-Trichloroethane

N.D. 1 79-00-5 11997 0.2 1 1,1,2-Trichloroethane

N.D. 1 79-01-6 11997 0.2 1 Trichloroethene

N.D. 1 75-69-4 11997 0.2 1 Trichlorofluoromethane

N.D. 1 96-18-4 11997 0.2 5 1,2,3-Trichloropropane¹

N.D. 1 75-01-4 11997 0.2 1 Vinyl Chloride

N.D. 1 1330-20-7 11997 1 6 Xylene (Total)

ELLE Sample #: GW 1160185 ELLE Group #: 2065990 Matrix: Water

Sample Description: Trip Blank Water Camp Bullis, TX

Project Name: Camp Bullis, TX

Collection Date/Time: 09/25/2019

SDG#: KGS01-02TB

Submittal Date/Time: 09/26/2019 10:52

Sample Comments State of Texas Lab Certification No. T104704194-19-34

¹ = This analyte was not on the laboratory's TCEQ Scope of Accreditation at the time of analysis.

Laboratory Sample Analysis Record

Analyst Dilution Factor

Trial# Batch# Analysis Date and Time

CAT

No.

Analysis Name Method

11997 Texas Class 2 VOCs SW-846 8260C 1 L192741AA 10/01/2019 12:41 Corie Mellinger 1 01163 GC/MS VOA Water Prep SW-846 5030C 1 L192741AA 10/01/2019 12:40 Corie Mellinger 1

Quality Control Summary

Group Number: 2065990 Client Name: Koman Government Services Reported: 10/01/2019 17:57

Matrix QC may not be reported if insufficient sample or site-specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD was performed, unless otherwise specified in the method.

All Inorganic Initial Calibration and Continuing Calibration Blanks met acceptable method criteria unless otherwise noted on the Analysis Report.

Method Blank

Analysis Name Result MDL** LOQ ug/l ug/l ug/l

Batch number: L192741AA Sample number(s): 1160184-1160185 20 0.7 N.D. Acetone 100 16 N.D. Acetonitrile 20 0.3 N.D. Acrylonitrile 1 0.2 N.D. Benzene 1 0.2 N.D. Bromodichloromethane 4 1 N.D. Bromoform 1 0.3 N.D. Bromomethane 10 0.3 N.D. 2-Butanone 5 0.2 N.D. Carbon Disulfide 1 0.2 N.D. Carbon Tetrachloride 1 0.2 N.D. Chlorobenzene 1 0.2 N.D. Chloroform 1 0.2 N.D. 1,2-Dibromoethane 5 0.2 N.D. 1,4-Dichlorobenzene 1 0.2 N.D. Dichlorodifluoromethane 1 0.3 N.D. 1,2-Dichloroethane 1 0.2 N.D. 1,1-Dichloroethene 1 0.2 N.D. trans-1,3-Dichloropropene 2 0.4 N.D. 1,3-Dichloropropene (total) 250 29 N.D. 1,4-Dioxane 1 0.4 N.D. Ethylbenzene 5 2 N.D. Hexachlorobutadiene 250 36 N.D. Isobutyl Alcohol 50 6 N.D. Methacrylonitrile 10 0.5 N.D. 4-Methyl-2-pentanone 1 0.3 N.D. Methylene Chloride 5 0.2 N.D. Styrene 1 0.2 N.D. 1,1,1,2-Tetrachloroethane 1 0.2 N.D. 1,1,2,2-Tetrachloroethane 1 0.2 N.D. Tetrachloroethene 1 0.2 N.D. Toluene 5 0.3 N.D. 1,2,4-Trichlorobenzene 1 0.3 N.D. 1,1,1-Trichloroethane 1 0.2 N.D. 1,1,2-Trichloroethane 1 0.2 N.D. Trichloroethene 1 0.2 N.D. Trichlorofluoromethane 5 0.2 N.D. 1,2,3-Trichloropropane 1 0.2 N.D. Vinyl Chloride 6 1 N.D. Xylene (Total)

*- Outside of specification **-This limit was used in the evaluation of the final result for the blank

(1) The result for one or both determinations was less than five times the LOQ.

(2) The unspiked result was more than four times the spike added.

Reported: 10/01/2019 17:57

Method Blank (continued)

Analysis Name Result MDL** LOQ ug/l ug/l ug/l

Batch number: 19273WAF026 Sample number(s): 1160184

0.5 0.1 N.D. Acenaphthene 10 4 N.D. Acetophenone 10 3 N.D. Aniline

0.5 0.1 N.D. Anthracene 60 20 N.D. Benzidine 5 2 N.D. Butylbenzylphthalate 5 2 N.D. Di-n-butylphthalate 2 0.5 N.D. 4-Chloro-3-methylphenol 2 0.5 N.D. bis(2-Chloroethyl)ether 2 0.5 N.D. 2-Chlorophenol 10 3 N.D. 3,3'-Dichlorobenzidine 2 0.5 N.D. 2,4-Dichlorophenol 5 2 N.D. Diethylphthalate 10 3 N.D. Dimethoate 10 3 N.D. 2,4-Dimethylphenol 5 2 N.D. 1,3-Dinitrobenzene 30 14 N.D. 2,4-Dinitrophenol 5 1 N.D. 2,4_2,6-Dinitrotoluenes 2 0.5 N.D. 1,2-Diphenylhydrazine 11 5 N.D. bis(2-Ethylhexyl)phthalate

0.5 0.1 N.D. Fluoranthene

0.5 0.1 N.D. Fluorene

0.5 0.1 N.D. Hexachlorobenzene 2 0.5 N.D. Hexachlorobutadiene 11 5 N.D. Hexachlorocyclopentadiene 5 1 N.D. Hexachloroethane 2 0.5 N.D. Isophorone 2 0.5 N.D. 2-Methylphenol 2 0.5 N.D. 4-Methylphenol 3 0.7 N.D. NDPA as diphenylamine 2 0.5 N.D. Nitrobenzene 25 12 N.D. N-Nitrosodi-n-butylamine 3 0.7 N.D. N-Nitroso-di-n-propylamine 3 0.7 N.D. N-Nitrosodiphenylamine 5 2 N.D. N-Nitrosomethylethylamine 2 0.5 N.D. N-Nitrosopyrrolidine 10 4 N.D. Parathion 2 0.5 N.D. Pentachlorobenzene 5 2 N.D. Pentachloronitrobenzene 5 1 N.D. Pentachlorophenol 2 0.5 N.D. Phenol 300 75 N.D. 1,4-Phenylenediamine 2 0.5 N.D. Pronamide

*- Outside of specification **-This limit was used in the evaluation of the final result for the blank

(1) The result for one or both determinations was less than five times the LOQ.

Reported: 10/01/2019 17:57

Method Blank (continued)

Analysis Name Result MDL** LOQ ug/l ug/l ug/l

0.5 0.1 N.D. Pyrene 5 2 N.D. Pyridine 10 4 N.D. 2,3,4,6-Tetrachlorophenol 2 0.5 N.D. 2,4,5-Trichlorophenol 2 0.5 N.D. 2,4,6-Trichlorophenol mg/l mg/l mg/l

Batch number: 192690571307 Sample number(s): 1160184

0.00020 0.000050 N.D. Mercury

Batch number: 192691404407 Sample number(s): 1160184

0.0500 0.0160 N.D. Antimony

0.0300 0.0160 N.D. Arsenic

0.0050 0.0010 N.D. Barium

0.0050 0.0010 N.D. Beryllium

0.0050 0.0010 N.D. Cadmium

0.0150 0.0016 N.D. Chromium

0.0150 0.0071 N.D. Lead

0.0100 0.0021 N.D. Nickel

0.0500 0.0160 N.D. Selenium

0.0100 0.0050 N.D. Silver

LCS/LCSD

RPD

Max

LCS/LCSD

Limits

LCS…