ATHENS COUNTRY STORE REVISED MODIFIED CORRECTIVE ACTION PLAN REPORT ATTF CP-21

Transcription

1 ATHENS COUNTRY STORE REVISED MODIFIED CORRECTIVE ACTION PLAN REPORT ATTF CP-21 Athens Country Store 1303 East Elm Street Athens, Limestone Co., AL Fac ID UST PREPARED FOR Watkins Oil Company, Inc. P.O. Box 649 Athens, AL DATE June 18, 2018 PREPARED BY CDG Engineers & Associates, Inc. 612 Wheeler Avenue Huntsville, AL 35801

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3 INTRODUCTION The former location of Athens Country Store is located at 1303 East Elm Street in Athens, Limestone County, Alabama. Topographically the site is an area of moderate relief in eastern Limestone County. Specifically, the site is located at 34 o north latitude and 86 o west longitude. A topographic map identifying the general location of the site and a Site Diagram are attached. SITE HISTORY In 1991, Mr. Raymond Love of ADEM, met with Athens Fire Chief Wilson Craig at the residence of Mr. Gilbert Whitt concerning gasoline in his 55-foot deep 6 diameter well installed in The residence is located at 1502 Elkton Road. Using an interface probe, the well was determined to be 60 feet deep with 8 inches of free product on groundwater located 8 feet below ground surface. The residence next door at 1500 Elkton Road belonged to Floyd Whitt and also contained a well. A slight gasoline odor but no sheen was observed in this well. This well was verified to not be in use. The residence at 1504 Elkton Road also had a well but contained no odor and tasted uncontaminated. Mr. Raymond Love presented his findings to Mr. Mitch Oliver of ADEM in the UST Corrective Action Unit in a Memorandum which concluded that the obvious source of the contamination was the Athens Country Store. ADEM issued a Notice of Violation (NOV) to the Watkins Oil Company requiring a Preliminary Investigation be performed. According to the Tank Tightness Test Report performed by M&W Equipment, the tank and the piping were not leaking. ADEM issued a Notice of Trust Fund Eligibility dated August 26, 1991 to Watkins Oil Company. ADEM also issued a NOV dated August 26, 1991 to Watkins Oil Company. According to this NOV, the results of the line test of the premium unleaded submitted to ADEM indicated that petroleum products had been released. In 1999, ADEM performed a site inspection and observed that the fuel station had been replaced with a salvage store and, according to the current owner, the tanks had been removed without a closure assessment. On May 1, 2009, ADEM issued a No Further Action letter for UST Incident No. UST at the site. ADEM was still requiring that a Preliminary Investigation be performed for Incident No. UST at the site. 1

4 CDG prepared a Preliminary Investigation Cost Proposal No. 1 and submitted it to ADEM on June 26, ADEM approved Cost Proposal No. 1 on August 7, The exact location of the former service station was located and third-party access was obtained on September 29, CDG submitted the Preliminary Investigation Report on November 5, In a letter dated May 30, 2017 ADEM requested that a cost proposal be submitted to modify the current corrective action plan for the site. This cost proposal was submitted and approved by ADEM on August 15, The Modified Corrective Action Plan was submitted on December 15, In a letter dated April 26, 2018 ADEM requested additional information and the submittal of a Revised Modified CAP. The requested information is included herein. SUMMARY OF PREVIOUS SITE ACTIVITIES The Preliminary, Secondary, Off-Site Secondary, and Additional Well Installations have included installing a network of eighteen Type II monitoring wells and one Type III vertical delineation well. An ARBCA Tier I/Tier II Evaluation was prepared and submitted to ADEM in December 2011 and was approved as stated in the ADEM letter dated February 16, A Corrective Action Plan (CAP) was prepared in March 2012 for In-Situ Chemical Oxidization (ISCO) injection and was approved by ADEM as stated in the letter dated March 31, The ISCO injection of Calcium Peroxide took place between September 9, 2015 and September 11, A second ISCO injection of Calcium Peroxide took place between January 19, 2017 and January 20, To date, ten quarters of Remediation by Natural Attenuation (RNA) groundwater monitoring events have been conducted at the site between March 1, 2015 and October 31, Due to the relatively unchanged contaminate levels after the second injection, ADEM requested in a letter dated May 30, 2017 that a Modified Corrective Action Plan be submitted for the site. PURPOSE The purpose of this report is to modify the existing CAP to enhance the remedial efforts at the site. A more aggressive remediation approach is warranted due to the persistence of COC concentrations at the site. During the sampling event conducted on September 18, 2017, benzene, MTBE, and naphthalene exceeded the corresponding Site Specific Target Levels (SSTLs) in MW-14, benzene and MTBE exceeded the corresponding SSTLs in MW-4 and MW-6, and MTBE exceeded the corresponding 2

5 SSTL in MW-19. The general objectives of this modified corrective action plan and the proposed remedial efforts for the facility are as follows: Ensure that the health and safety of all project personnel is maintained during remediation activities. Enhance the reduction of absorbed phase petroleum hydrocarbons from soils within the vadose and saturated zone to below the accepted SSTLs. Enhance the reduction of dissolved phase petroleum hydrocarbons from groundwater to below the accepted SSTLs. Accomplish these objectives within the proposed period of operation. REMEDIATION RECOMMENDATION PLAN The proposed corrective action includes: The installation of three recovery wells for extraction utilizing Mobile Enhanced Multi-phase Extraction (MEME). The installation of Air Sparge (AS) wells within the plume area based on the results of the ISCO injection rates. Well Installation CDG recommends installing three recovery wells. The borings will be completed with a truck mounted rig using hollow stem auger drilling and sampling techniques to depths of approximately 20 feet below land surface (bls). As the borings are advanced, soil samples will be collected using continuous sampling techniques to accurately describe the encountered sediments. The borings will be sampled using 5-foot split spoon samplers advanced through the augers. The samplers and augers will be decontaminated between borings. Based on field screening, using a Photo Ionization Detector (PID), two soil samples will be selected from each boring and placed in two 4 oz. jars with Teflon lids, packed on ice, and shipped under chainof-custody protocol, to an analytical laboratory for BTEX/MTBE/Naphthalene analysis using EPA Method 8260B. Recovery wells RW-1 through RW-3 will be constructed as shown in the Figures. The Type II recovery wells will be installed to a depth of approximately 20 feet bls. The wells will be constructed of 4-inch 3

6 PVC pipe with 15 feet of inch slotted PVC screen. Graded filter sand (10/20) will be placed around the screen, and a bentonite pellet seal will be placed above the sand pack. The remainder of the annulus will be sealed with a cement grout mixture. A locking watertight cap will be placed in the top of each well, and a protective casing with a bolt down cover will be installed over the casing in a flush mounted concrete pad. A typical Type II recovery well construction is shown in the figures. Following completion, each of the newly installed recovery wells will be developed using a new, clean plastic bailer until clear, silt free water is produced. Purge water will be treated using a portable carbon unit treatment prior to on-site disposal. A sample of the treated water will be collected for laboratory analysis to verify that the carbon does not have breakthrough. The proposed locations of the wells are shown in the figures. Additionally, CDG proposes to install six Air Sparge (AS) wells within the source area. No MEME events have been performed at The Athens Country Store site however, injection rates during the ISCO application averaged 2.16 gallons per minute in the foot interval which should be sufficient for the air sparging to be effective. The proposed AS wells will be completed with one-inch diameter schedule 40 PVC and will be screened with a 2-foot section of porous media sparge point. The average groundwater depth in the source area over the last 3 years is 9.3 feet bls. The AS wells will be installed to 15 feet bls or auger refusal. MEME with Air Sparging Events Monthly 24-hour MEME events with Air Sparging will be conducted for a period of two years, provided these efforts prove effective. A third party contractor will be contracted to conduct the Air Sparging events concurrently with the MEME events. Compressed air will be injected into the proposed AS points simultaneously with MEME events. An Underground Injection Control (UIC) permit application for injection of ISCO was submitted on August 17, 2012 and approved by ADEM on July 24, A General UIC permit for air injection will be applied for utilizing the Electronic Notice of Intent (enoi) system. The Air Sparge events, along with MEME events, are anticipated to rapidly reduce the COC concentrations within the source area to levels below the proposed SSTLs. Once COC concentrations are reduced to below the SSTLs, corrective action activities will be discontinued and re-bound monitoring will be initiated. 4

7 CDG will recommend the site for NFA status if remediation goals are met. Should the COC concentrations remain above the SSTLs after a two year period, CDG will re-evaluate the modified corrective action plan. Groundwater Monitoring Groundwater samples will continue to be collected quarterly from all site monitoring wells. The groundwater samples will be collected from the monitoring wells using new clean plastic bailers and transferred to 40 milliliter (ml) glass volatile organic analysis (VOA) vials preserved with hydrochloric acid (HCl) for BTEX, MTBE, and naphthalene analysis using EPA Method 8260B, in 250 ml plastic jars preserved with Nitric Acid for Sodium and Iron via EPA Method 6010 and in 250 ml plastic jars with no preservative for Chrloride and Sulfate via EPA Method During each groundwater sampling event, all monitoring wells will also be monitored for natural attenuation parameters (DO, ph, and ORP). PROPOSED REPORTING REQUIREMENTS CDG will submit reports in accordance with ADEM requirements. These reports will include the following: Recovery/Air Sparge Well Installation Report This report will include the recovery well and air sparge well installation details, soil sampling results, and approval of the UIC permit modification. Reporting of Monthly MEME with Air Sparging Effectiveness CDG proposes to submit quarterly reports, which will summarize field activities and the progress of site groundwater constituent concentrations towards achieving approved corrective action levels. The following data will be included in each report: field activities performed, groundwater elevations, groundwater analytical results as compared to target levels, potentiometric surface maps, COC contour map, and MEME/Air Sparge data results. The reports will also include remediation effectiveness and recommendations concerning additional measures deemed necessary. Request for Closure Evaluation of Corrective Action This report will include data that demonstrates that remediation goals have been achieved and will request a status of No Further Action (NFA) for the site. Methods for abandonment of monitoring and recovery wells will be described. 5

8 Site Closure Report This report will describe in detail the closure of the site and removal of all monitoring wells. SCHEDULE OF IMPLEMENTATION It is anticipated that the proposed corrective action plan will begin with the first groundwater monitoring event following the approval of the CAP and the revised UIC permit. The following schedule indicates the timetable for major project events to be completed as part of this corrective action plan: Time Following CAP Approval (months) Project Event Project Event Length 1 Recovery/Air Sparge Well Installation 1 Week 0 24 Monthly MEME/Air Sparging events, 2 Years Quarterly groundwater monitoring, evaluation of performance, and recommendations for further corrective action if required Well abandonment; completion and submittal of final report if allowable by ADEM 2 Months PROPOSED SAMPLING AND MONITORING ACTIVITIES Following the approval of the CAP, and initiation of MEME/Air Sparging events quarterly groundwater sampling of all monitoring wells will be conducted. A summary of the scheduled sampling points is presented below: Sample Location & Medium Sample Frequency Sample Parameters MW-1 through MW-19 and RW-1 through RW-3 MW-1 through MW-19 and RW-1 through RW-3 MW-2, MW-3, MW-6, MW-9, and MW-13 Quarterly Quarterly BTEX/MTBE/Naphthalene (EPA 8260) ORP, ph, DO Quarterly Iron & Sodium (EPA 6210), Chloride & Sulfate (EPA 9056) 6

9 APPENDICES Tables Figures Site Location USGS Topographic Map Site Map with Utility and Well Locations Site Map with Proposed Recovery and Air Sparge Well Locations Typical Recovery/Sparge Well Construction Diagram ADEM Forms UST Release Fact Sheet UST Site Classification System Checklist Additional Data Site Health and Safety Plan Quality Assurance/Quality Control Plan Task Performance Summary.... A B C D E Appendices

10 TABLES APPENDIX A

11 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-1 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 10/08/ /08/ /28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

12 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-1 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 10/08/ <0.001 <0.001 < /28/ <0.001 <0.001 < /17/ <0.001 <0.001 < /20/ <0.001 <0.001 <0.001 <0.001 BDL - 04/11/ <0.001 <0.001 < /01/ <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/ <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/ <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

13 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-2 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 10/08/ /08/ /28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/

14 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-2 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 10/08/09 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/28/10 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 03/17/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/20/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 04/11/12 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 09/18/17 NOT SAMPLED NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

15 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-3 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 10/08/ /08/ /28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

16 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-3 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 10/08/ <0.001 <0.001 <0.001 <0.001 BDL - 06/28/10 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 03/17/ <0.001 <0.001 <0.001 <0.001 BDL - 09/20/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 04/11/12 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

17 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-4 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 10/08/ /08/ /28/ /28/10 FREE PRODUCT (0.08 FT) 03/17/ /17/ /20/ /20/ /11/ /11/12 FREE PRODUCT (0.125 FT) 06/01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

18 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-4 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 10/06/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 10/08/ /28/10 NOT SAMPLED - FREE PRODUCT (0.08 FT) 03/17/ /20/ /11/12 NOT SAMPLED - FREE PRODUCT (0.125 FT) 06/01/ /09/15 09/15/ CA VIA INJECTION /02/ <2.5 03/23/ /27/ <5.0 09/28/ <5.0 12/13/ <2.5 01/19/17 03/20/ CA VIA INJECTION <2.5 06/13/ <2.5 09/18/ GRP SSTLs: Inhalation SSTLs:

19 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-5 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: III 06/21/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 06/28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

20 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-5 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: III 06/21/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 06/28/ /17/ <0.001 <0.001 < /20/ <0.001 <0.001 < /11/12 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION < /02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

21 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-6 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 06/28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

22 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-6 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 06/28/ /17/ /20/ /11/ /01/ /09/15 09/15/ CA VIA INJECTION /02/ < /23/ < /27/ /28/ /13/ <1.0 01/19/17 03/20/ CA VIA INJECTION /13/ <1.0 09/18/ GRP SSTLs: Inhalation SSTLs:

23 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-7 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 06/28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

24 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-7 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 06/28/ /17/ /20/11 < /11/ /01/ /09/15 09/15/ CA VIA INJECTION /02/ < /23/ /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 < /18/17 <0.001 < <0.001 < <0.005 GRP SSTLs: Inhalation SSTLs:

25 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-8 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 06/28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

26 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-8 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 06/28/ /17/ /20/ /11/ /01/ /09/15 09/15/ CA VIA INJECTION /02/ /23/ /27/ /28/ /13/ /19/17 03/20/ CA VIA INJECTION < /13/ < /18/ GRP SSTLs: Inhalation SSTLs:

27 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-9 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 06/28/ /28/ /17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

28 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-9 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 06/22/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 06/28/ /17/ <0.001 < /20/ /11/ /01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/ <0.005 CA VIA INJECTION /02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 < < /27/ <0.001 < /28/ < /13/16 <0.001 <0.001 <0.001 < < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL /13/17 <0.001 <0.001 < /18/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL <0.005 GRP SSTLs: Inhalation SSTLs:

29 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-10 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 03/17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

30 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-10 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 03/17/ /20/ <0.001 <0.001 <0.001 <0.001 BDL - 04/11/ <0.001 <0.001 <0.001 <0.001 BDL - 06/01/ <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION /02/ <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

31 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-11 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 03/17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

32 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-11 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 03/17/ /20/ /11/ /01/ /09/15 09/15/ <0.005 CA VIA INJECTION /02/ <0.001 < < < /23/ /27/ /28/ /13/ /19/17 03/20/ CA VIA INJECTION /13/ < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

33 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-12 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 03/17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

34 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-12 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 03/17/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/20/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 04/11/12 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 < < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

35 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-13 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 03/17/ /17/ /20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

36 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-13 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 03/16/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 03/17/ <0.001 <0.001 < /20/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL <0.005 GRP SSTLs: Inhalation SSTLs:

37 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-14 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 09/13/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 09/20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

38 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-14 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 09/13/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 09/20/ /11/ /01/ /09/15 09/15/ CA VIA INJECTION /02/ /23/ /27/ /28/ /13/ /19/17 03/20/ CA VIA INJECTION /13/ /18/ GRP SSTLs: Inhalation SSTLs:

39 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-15 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 09/13/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 09/20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

40 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-15 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 09/13/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 09/20/ /11/ /01/ < /09/15 09/15/ <0.005 CA VIA INJECTION < /02/ <0.005 <0.001 < /23/ <0.005 <0.001 < < /27/ <0.005 <0.001 < < /28/ <0.005 <0.001 < < /13/ <0.001 <0.001 < < /19/17 03/20/ <0.001 CA VIA INJECTION <0.001 < < /13/ <0.001 <0.001 < < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

41 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-16 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 09/13/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 09/20/ /20/ /11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

42 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-16 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 09/13/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 09/20/11 <0.001 <0.001 <0.001 < /11/12 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

43 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-17 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 04/04/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 04/11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

44 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-17 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 04/04/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 04/11/ < < /01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/15 <0.001 <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

45 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-18 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 04/04/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 04/11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/

46 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-18 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 04/04/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 04/11/12 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 06/01/15 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - 09/09/15 09/15/ <0.001 <0.005 CA VIA INJECTION <0.001 <0.003 BDL - 12/02/15 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /23/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/17 <0.001 <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /18/17 NOT SAMPLED GRP SSTLs: Inhalation SSTLs:

47 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-19 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 04/04/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) POTENTIOMETRIC ELEVATION SUMMARY INTRINSIC GROUNDWATER DATA SUMMARY MEASUREMENT DEPTH TO WATER ELEVATION FREE PRODUCT PCW GALLONS DISSOLVED REDOX POTENTIAL DATE (FT BTOC) (FT ABOVE MSL) THICKNESS (FT) REMOVED SAMPLE DATE OXYGEN (mg/l) ph (mv) 04/11/ /11/ /01/ /01/ /15/ /15/ /02/ /02/ /23/ /23/ /27/ /27/ /28/ /28/ /13/ /13/ /20/ /20/ /13/ /13/ /18/ /18/

48 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: MW-19 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: II 04/04/ DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): 2 Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 04/11/ < < /01/ <0.001 <0.001 < /09/15 09/15/ <0.005 CA VIA INJECTION <0.001 < /02/ <0.001 <0.005 <0.001 <0.003 BDL < /23/ <0.001 <0.005 <0.001 <0.003 BDL < /27/ <0.001 <0.005 <0.001 <0.003 BDL < /28/ <0.005 <0.001 < < /13/ <0.001 <0.001 <0.001 <0.003 BDL < /19/17 03/20/ <0.001 <0.001 CA VIA INJECTION <0.001 <0.003 BDL < /13/ <0.001 <0.001 <0.001 <0.003 BDL < /18/ <0.001 <0.001 < <0.005 GRP SSTLs: Inhalation SSTLs:

49 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: PW-1 INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): - Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 03/17/11 <0.001 <0.001 <0.001 <0.001 <0.001 BDL - GRP SSTLs: Inhalation SSTLs:

50 Athens Country Store Monitoring Point Data Summary Table SITE NAME: UST NUMBER: WELL ID: Carbon Effluent INSTALLATION WELL DEPTH SCREEN CASING ELEV WELL TYPE: DATE: (FT BTOC): INTERVAL (FT): (FT ABOVE MSL): DIAMETER (IN): - Notes: BTOC (Below Top of Casing); MSL (Mean Sea Level); BDL (Below Detection Limit); CA (Corrective Action) GROUNDWATER ANALYTICAL SUMMARY (mg/l) SAMPLE DATE MTBE BENZENE TOLUENE ETHYLBENZENE TOTAL XYLENES TOTAL BTEX NAPHTHALENE 07/27/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /28/16 <0.001 <0.001 <0.005 <0.001 <0.003 BDL < /13/16 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /20/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL < /13/17 < <0.001 < < /18/17 <0.001 <0.001 <0.001 <0.001 <0.003 BDL <0.005 GRP SSTLs: Inhalation SSTLs:

51 FIGURES APPENDIX B

52

53 LEGEND R R Type II Monitoring Well Type III Monitoring Well Abandoned Monitoring Well Wooded Area PW-1 C R Wood Fence Commercial Residential MW-15 C Building / House MW-17 R R R R Gravel C Grass R C MW-3 MW-2 MW-18 Concrete Drive Pavers MW-11 Gravel MW-19 Grass MW-14 Asphalt MW-6 MW-5 MW-4 MW-1 MW-12 MW-10 Grass MW-7 MW-8 Grass MW-9 Grass East Elm Street MW-16 <0.001/BDL <0.001/<0.005 Drive Garrett MW-13 <0.001/BDL <0.001/<0.005 Site Map with Well Locations Approximate Scale in Feet Athens Country Store 1303 East Elm Street Athens, Limestone County, Alabama

54 LEGEND R R Type II Monitoring Well Type III Monitoring Well Abandoned Monitoring Well Wooded Area Proposed Recovery Well Proposed Air Sparge Well PW-1 C R Wood Fence Commercial Residential MW-15 C Building / House MW-17 R R R R Gravel C Grass R C MW-3 MW-2 MW-18 Concrete Drive Pavers MW-11 Gravel MW-19 Grass MW-14 Asphalt MW-6 MW-5 MW-4 MW-1 MW-12 MW-10 Grass MW-7 MW-8 Grass MW-9 Grass East Elm Street MW-16 <0.001/BDL <0.001/<0.005 Drive Garrett MW-13 <0.001/BDL <0.001/<0.005 Recovery and Air Sparge Well Proposed Locations Approximate Scale in Feet Athens Country Store 1303 East Elm Street Athens, Limestone County, Alabama