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Home My WebLink AboutRA-8051_46131_CA_LSA_20171219_LSA1Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017156.002 December 19, 2017 i TABLE OF CONTENTS A SITE IDENTIFICATION ....................................................................................................................... 1 B RISK CHARACTERIZATION .............................................................................................................. 2 1 GROUNDWATER/SURFACE WATER/VAPOR IMPACTS .............................................................................. 2 2 LAND USE ............................................................................................................................................... 3 C RECEPTOR INFORMATION ............................................................................................................... 4 1 WATER-SUPPLY WELLS .......................................................................................................................... 4 2 PUBLIC WATER SUPPLIES ....................................................................................................................... 4 3 SURFACE WATER .................................................................................................................................... 5 4 WELLHEAD PROTECTION AREAS ............................................................................................................ 5 5 DEEP AQUIFERS IN THE COASTAL PLAIN PHYSIOGRAPHIC REGION ........................................................ 5 6 SUBSURFACE STRUCTURES ..................................................................................................................... 5 7 PROPERTY OWNERS AND OCCUPANTS .................................................................................................... 5 D SITE GEOLOGY AND HYDROGEOLOGY ....................................................................................... 5 E SAMPLING RESULTS ........................................................................................................................... 6 1 SOIL ........................................................................................................................................................ 6 2 GROUNDWATER ...................................................................................................................................... 6 F CONCLUSIONS AND RECOMMENDATIONS ................................................................................. 6 G FREE PRODUCT INVESTIGATION/RECOVERY ........................................................................... 7 H SITE HISTORY ....................................................................................................................................... 7 I REFERENCES ......................................................................................................................................... 9 FIGURES Figure 1 – Topographic Site Map Figure 2 – Site Map Figure 3 – Surrounding Property Owners Map Figure 4 – Receptor and Areas of Public Assembly Map Figure 5 – Zoning Map TABLES Table B-4 – Summary of Detected Groundwater Analytical Results Table B-5 – Property Owners with a Water Supply Well Within 1,000 Feet of the Source Area Table B-6 – Surrounding Property Owners APPENDICES Appendix A – Boring Log and Well Construction Record Appendix B – Standard Sampling Procedures Appendix C – Returned Water-Supply Questionnaires Appendix D – Laboratory Test Reports and Chains-of-Custody Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 2 B RISK CHARACTERIZATION 1 Groundwater/Surface Water/Vapor Impacts High Risk 1. Has the release contaminated any water-supply well including any well used for non- drinking purposes? EVIDENCE OF CONTAMINATION WAS IDENTIFIED DURING A GROUNDWATER SAMPLING EVENT CONDUCTED BY OTHERS. A WATER SAMPLE WAS COLLECTED AND TESTED FROM THE KITCHEN SINK WITHIN THE STORE BUILDING. MTBE (20 µg/L) WAS DETECTED AT A CONCENTRATION THAT MEETS ITS NORTH CAROLINA 2L GROUNDWATER QUALITY STANDARD. 2. Is a water-supply well used for drinking water located within 1,500 feet of the source area of the discharge or release? YES. MULTIPLE WATER-SUPPLY WELLS WERE IDENTIFIED WITHIN 1,500 FEET OF THE SOURCE AREA. 3. Is a water-supply well not used for drinking water (e.g. irrigation, washing cars, industrial cooling water, filling swimming pools) located within 250 feet of the source area of the release? YES. THREE INACTIVE WATER-SUPPLY WELLS ARE LOCATED WITHIN 250 FEET OF THE SOURCE AREA. 4. Does groundwater within 500 feet of the source area of the release have the potential for future use (there is no other source of water supply other than groundwater)? YES. PUBLIC WATER IS NOT AVAILABLE IN THE VICINITY OF THE SITE. 5. Do vapors from the release pose a threat of explosion because of accumulation of the vapors in a confined space or pose any other serious threat to public health, public safety, or the environment? UNKNOWN. 6. Are there any other factors that would cause the release to pose an imminent danger to public health, public safety, or the environment? NO Intermediate Risk 7. Is a surface water body located within 500 feet of the source area of the release? NO If yes, does the maximum groundwater contaminant concentration exceed the surface water quality standards and criteria found in 15A NCAC 2B .0200 by a factor of 10? 8. Is the source area or release located within an approved or planned wellhead protection area as defined in 42 USC 300h-7(e)? NO 9. Is the release located in the Coastal Plain physiographic region as designated on a map entitled “Geology of North Carolina” published by the Department in 1985? NO 10. Do the levels of groundwater contamination for any contaminants exceed the gross contaminant levels (see Table 9 of the New Guidelines) established by the Department? NO Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 3 2 Land Use Property Containing Source Area of Release The questions below pertain to the property containing the source area of the release. 1. Does the property contain one or more primary or secondary residences (permanent or temporary)? NO. HOWEVER, THE CURRENT SITE BUILDING HAS AN ATTACHED RESIDENCE THAT IS NOT OCCUPIED. Describe. The property is developed with a convenience store and grill. 2. Does the property contain a school, daycare center, hospital, playground, park, recreation area, church, nursing home, or other place of public assembly? NO Describe. The property is developed with a convenience store and grill. 3. Does the property contain a commercial (e.g., retail, warehouse, office/business space, etc.) or industrial (e.g., manufacturing, utilities, industrial research and development, chemical/petroleum bulk storage, etc.) enterprise, an inactive commercial or industrial enterprise, or is the land undeveloped? YES Describe. The property is developed with a convenience store and grill. 3. Do children visit the property? YES Explain. The property is developed with a convenience store and grill, therefore, children would be expected to visit the property. 4. Is access to the property reliably restricted consistent with its use (e.g., fences, security personnel or both)? NO Explain. Access restrictions are not deemed necessary because all soil is covered with a concrete cap. 5. Do pavement, buildings, or other structures cap the contaminated soil? YES If yes, explain what mechanisms are in place or can be put into place to ensure that the contaminated soil will remain capped in the foreseeable future. PROGRESS DOES NOT HAVE KNOWLEDGE THAT THE SITE WILL BE RENOVATED IN THE FUTURE AND THEREFORE IT IS EXPECTED THAT THE CONCRETE WILL REMAIN COVERING THE USTS AND ANY POSSIBLE CONTAMINATED SOIL. 6. What is the zoning status of the property? THE SUBJECT SITE IS ZONED RURAL CONSERVATION (FIGURE 5). Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 4 7. Is the use of the property likely to change in the next 20 years? NO Explain. Progress does not have knowledge of future development plans associated with the site. Property Surrounding Source Area of Release The questions below pertain to the area within 1,500 feet of the source area of the release (excludes property containing source area of the release). 1. What is the distance from the source area of the release to the nearest primary or secondary residence (permanent or temporary)? The nearest off-site residence is located approximately 430 feet to the east of the source area. This residence appears not to be in the downgradient direction of groundwater flow near the site. 2. What is the distance from the source area of the release to the nearest school, daycare center, hospital, playground, park, recreation area, church, nursing home or other place of public assembly? Progress did not identify a place of public assembly within 1,000 feet of the source area. 3. What is the zoning status of properties in the surrounding area? The surrounding properties in the area are zoned Rural Conservation. 4. Briefly characterize the use and activities of the land in the surrounding area. Land uses in the surrounding area are institutional, commercial, agricultural, and residential. C RECEPTOR INFORMATION 1 Water-Supply Wells Progress mailed six water-supply well questionnaires to the property owners within a 1,000- foot radius of the site. Four of the questionnaires had been completed and returned at the time of this report. Progress also completed a visual reconnaissance within 1,500 feet of the site. Progress identified evidence of water-supply wells during the vehicular reconnaissance within 1,500 feet of the site. Completed and returned questionnaires confirmed the presence of water-supply wells. Municipal water is not available in the vicinity of the site. Copies of the returned water-supply well questionnaires are included in Appendix C. 2 Public Water Supplies Are public water supplies available within 1,500 feet of the source are of the release? NO If yes, where is the location of the nearest public water line and the source(s) of the public water supply? Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 5 3 Surface Water According to the USGS topographic map, an unnamed pond is located approximately 1,230 feet to the northeast of the source area. 4 Wellhead Protection Areas The source area is not located within an established wellhead protection area. 5 Deep Aquifers in the Coastal Plain Physiographic Region The subject site is not located in the Coastal Plain Physiographic Province. 6 Subsurface Structures Overhead electrical and phone utility lines are located at the subject site. Subsurface utilities were not identified in the location of the UST system. 7 Property Owners and Occupants Nirali Management, Inc. currently owns the subject property. Adjacent properties are developed with commercial, institutional, or agricultural use properties. The names and addresses of the adjacent property owners are provided in Table B-6 and referenced on Figure 3. D SITE GEOLOGY AND HYDROGEOLOGY The site is located in the Piedmont Physiographic Province of North Carolina. The rocks beneath the site have been characterized as metamorphosed granitic rock. Groundwater generally is stored in the pore space between individual grains of residual soil and in the fractures within the underlying parent rock. Due to the intense shearing associated with the thrust faulting in the area and the relatively shallow depths to bedrock, it can be expected that the fractures play a major role in the flow of groundwater in the subsurface. Recharge to the water table is primarily by precipitation infiltrating the upper soils and percolating downward, under the influence of gravity, to the groundwater table. Typically, the water table is not a level surface, but a subdued reflection of the land surface. However, the depth to the water table is not constant, and depends on many factors, which include the amount of rainfall, the permeability of the soil, and the amount of groundwater being pumped in the area. Based on our review of the topographic map and on-site observation, the site is located on the northeastern flank of a northwest-southeast trending ridge. Groundwater generally flows in directions sub-parallel to the ground surface slopes and under the influence of gravity toward points of discharge such as creeks, swamps, drainage swales, or pumped groundwater wells. Based on topographic inference, groundwater beneath the site most likely flow generally north-northeast toward an unnamed tributary(Figure 1). Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 6 E SAMPLING RESULTS 1 Soil Based on the observed shallow depth to groundwater (3.88 feet from top of casing) encountered during the completion of the Site Check Report field activities, Progress did not collect soil samples for laboratory analysis. 2 Groundwater On November 14, 2017 Progress was on-site with SAEDACCO, Inc. to install a Type II monitoring well (MW-1) in a location between the dispensing island and the USTs. The monitoring well was installed to a depth of 20 feet below land surface (bls) using the solid stem auger drilling method. The monitoring well was constructed with 15 feet of 0.01 slotted Schedule 40 PVC screen. Progress returned to the site on November 15, 2017 to collect a groundwater sample from the monitoring well. The groundwater sample was collected using a disposable bailer and new length of cord and transferred to laboratory containers. The groundwater sample collected from monitoring well MW-1 was analyzed by R&A Laboratories of Kernersville, North Carolina for volatile organic compounds (VOCs) using Standard Method 6200B, for volatile petroleum hydrocarbons (VPH) using the Massachusetts Department of Environmental Protection (MADEP) Method, for ethylene di- bromide using the EPA Method 504.1, and for lead. Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected methyl tert butyl ether [MTBE (2.2 µg/L)] at a concentration that does not exceed its North Carolina 2L Groundwater Quality Standard (NC2LGWQS). A summary of the laboratory test report is attached as Table B-4. F CONCLUSIONS AND RECOMMENDATIONS Based on the results of the receptor survey and groundwater sampling activities, Progress makes the following conclusions and recommendations: 1. The site meets the criteria for a High Risk site based on the concentrations of petroleum- related compounds not exceeding the applicable GCLs, a surface water feature not being identified within 500 feet, and water-supply wells not being identified within 1,000 feet of the source area. The site is not located within a wellhead protection area. 2. Soil samples were not collected and tested as part of the Phase I Limited Site Assessment activities. 3. Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected MTBE at a concentration not exceeding its NC2LGWQS. 4. Progress recommends that a copy of this report be submitted to the Raleigh Regional Office of the North Carolina Department of Environmental Quality (NCDEQ), Division of Waste Management, UST Section. Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 7 G FREE PRODUCT INVESTIGATION/RECOVERY Free product was not detected in the monitoring well during the November 15, 2017 sampling event. H SITE HISTORY A recently completed groundwater assessment prepared by S&ME for an oil company interested in purchasing the underground storage tank (UST) system equipment indicated that soil samples screened in the vicinity of the UST system exhibited evidence of a release from the UST system. Two groundwater samples collected from the site indicated targeted petroleum compounds in excess of the laboratory detection limits, but below their respective NC2LGWQS. Additionally, a water sample obtained from the kitchen faucet within the residence portion of the facility indicated a concentration of MTBE (20 ug/L), which meets its NC2LGWQS. Because MTBE does not have an EPA Drinking Water Standard, the interim drinking water standard adopted by the North Carolina Department of Environmental Quality (NCDEQ) is the NC2LGWQS. Upon discovery of the elevated concentration of MTBE, S&ME returned to the site and collected a groundwater sample from the water- supply well that was thought to be providing drinking water to the store, grill, and residence. S&ME collected and tested a groundwater sample from a water-supply well located 500 feet north of the UST system. The groundwater sample was collected from a spigot at the wellhead. The groundwater sample did not indicate detectable concentrations of targeted petroleum compounds. Based on the confusion of the source of water for the store, the current landowner contracted with a local contractor who determined that the water being supplied to the store was at least partially coming from a well located proximal to the USTs. The pump in the well located 500 feet to the north was faulty and was not able to provide sufficient water volumes to the store, grill, and residence. The contractor terminated both the electrical and plumbing connections at the well located proximal to the USTs and removed and re-installed a new pump in the well located 500 feet to the north of the USTs. McLeod Oil Company requested that the property owner provide a letter from a Licensed Plumber stating that the water supply provided to the store, grill, and residence was coming from the well located 500 feet to the north of the USTs. A Licensed Plumber provided a letter stating that the water being supplied to the store, grill, and residence is coming from the well located 500 feet to the north. Subsequent sampling of the kitchen sink within the store building indicated that targeted petroleum compounds were not detected at concentrations exceeding the laboratory’s detection limit. McLeod Oil Company received a Notice of Regulatory Requirements from the NCDEQ requiring the completion of tank and line testing and a Site Check Report. According to McLeod Oil Company personnel, the tank and line testing has been completed and did not indicate evidence of a current leak. A copy of the passing test results has been forwarded to the appropriate NCDEQ agencies for their review. Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 8 According to information provided to McLeod Oil Company and Progress, the current property owner contracted with a licensed well driller to install a water-supply well located more than 500 feet from the nearest component of the UST system, properly abandon the water-supply well located approximately 465 feet from the UST system, and render the three remaining water-supply wells on the property inoperable. This information has also been forwarded to the NCDEQ for their review. Progress was contracted by McLeod Oil Company to complete a Site Check Report. On September 28, 2017 Progress and 3D Environmental Investigations, LLC were on-site to advance soil borings in the vicinity of the UST system. Soil samples were collected continuously in each boring from the ground surface to the boring termination depth of approximately five to fifteen feet below land surface (bls). Each soil sample was collected by driving a five-foot long, 2.25-inch sampling probe into the soil. The probe is lined with a disposable clear plastic tube, which was replaced for each five-foot interval. After the probe is driven, the clear plastic tube filled with soil is removed from the probe. The clear plastic tube is then cut open to remove the soil for visual analysis and/or collection of a soil sample for laboratory analysis. A representative portion of the soil samples collected from each of the Geoprobe® soil sample tubes was transferred into a new, clean resealable bag (half full). Progress returned to the site on October 28, 2017 to advance additional soil borings using a hand auger on the northern and western sides of the UST basin and immediately below the spill buckets. Progress advanced three soil boring in the vicinity of the USTs and the spill buckets and encountered pea gravel. Therefore, soil samples were not collected from beneath the spill buckets. The location of the soil borings advanced into the pea gravel are depicted on Figure 2. Progress advanced two soil borings along the western side of the UST basin to depths of 12 feet bls. The soil borings were advanced using a decontaminated hand auger. One soil sample from each soil boring was submitted to a North Carolina certified laboratory for analysis. The soil sample selected for laboratory analysis from each boring was selected based on the boring termination depth. Based on historical groundwater data and the estimated depth to groundwater observed during the groundwater sampling and drilling activities, each soil sample selected for laboratory analysis was collected from depths ranging from approximately five to fifteen feet bls. The selected soil sample from each boring was placed into laboratory prepared containers and then into a cooler packed with ice and delivered under chain-of-custody to Research and Analytical Laboratories, Inc. (R&A) in Kernersville, North Carolina. Each soil sample was analyzed for gasoline range total petroleum hydrocarbons (TPH) using EPA Method 8015/5035. On November 14, 2017 Progress was on-site with SAEDACCO, Inc. to install a Type II monitoring well (MW-1) in a location between the dispensing island and the USTs. The monitoring well was installed to a depth of 20 feet bls using the solid stem auger drilling method. The monitoring well was constructed with 15 feet of 0.01 slotted Schedule 40 PVC screen. Progress returned to the site on November 15, 2017 to collect a groundwater sample from the monitoring well. The groundwater sample was collected using a disposable bailer and new length of cord and transferred to laboratory containers. The groundwater sample collected from monitoring well MW-1 was analyzed by R&A for VOCs using Standard Method 6200B, for VPH using the Massachusetts Department of Environmental Protection (MADEP) Method, for ethylene di-bromide using the EPA Method 504.1, and for lead. Phase I Limited Site Assessment Report Twins Grocery Site 5950 Semora Road Roxboro, North Carolina Progress Project No. 1017078.003 December 19, 2017 9 Laboratory analysis of soil samples S-1 through S-11 and HA-1 and HA-2 did not detect gasoline range TPH at concentrations that exceed the laboratory detection limit or the North Carolina Action Level of 50 mg/Kg. Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected methyl tert butyl ether [MTBE (2.2 µg/L)] at a concentration that does not exceed its NC2LGWQS. A summary of the laboratory test report is attached as Table B-4. Based on the results of the laboratory testing, the Site Check Report did not identify evidence of gasoline range TPH in the immediate vicinity of the UST system. A groundwater sample collected for laboratory analysis indicated the presence of MTBE at a concentration not exceeding its NC2LGWQS. The source of the groundwater contamination is not known. I REFERENCES North Carolina Department of Natural Resources and Community Development Geologic Map of North Carolina published 1985. Underground Storage Tank Section, North Carolina Department of Environment and Natural Resources, Guidelines for Assessment and Corrective Action for UST Releases, Effective December 1, 2013. Site Check Report, prepared by Progress Environmental, Inc. and dated November 20, 2017. TABLES Figure 1 Topographic Site Map Twins Grocery Site 5950 Semora Road Roxboro, Person County, North Carolina P.O. Box 5884 Winston-Salem, NC 27113 Telephone: (336) 722-9999 Fax: (336) 722-9998 www.progressenvironmental.com Olive Hill, N.C. Date: 2016 United States Department of the Interior United States Geological Survey 7.5 Minute Series Topographic Map Contour Interval: 10 feet Approximate Scale: 1:24,000 Project: Twins Grocery Client: McLeod Oil Co. Progress Job #: 1017078.003 Date: December 2017 Site Figure 3 Surrounding Property Owners Map Twins Grocery Site 5950 Semora Road Roxboro, North Carolina P.O. Box 5884 Winston-Salem, NC 27113 Telephone: (336) 722-9999 Fax: (336) 722-9998 www.progressenvironmental.com Roxboro, N.C. Aerial Date: 2013 Person County GIS https://gis.personcounty.net/TaxParcelVie wer/ Approximate Scale: Not to Scale Project: Twins Grocery Client: McLeod Oil Company Progress Job #: 1017078.003 Date: December 2017 Site 1 2 2 2 3 2 Progress Figure 5 Zoning Map Twins Grocery Site 5950 Semora Road Roxboro, North Carolina P.O. Box 5884 Winston-Salem, NC 27113 Telephone: (336) 722-9999 Fax: (336) 722-9998 www.progressenvironmental.com Roxboro, N.C. Map Date: 2017 Person County GIS https://gis.personcounty.net/TaxParcelVie wer/ Approximate Scale: Not to Scale Project: Twins Grocery Site Client: McLeod Oil Co. Progress Job #: 1017078.003 Date: December 2017 Site FIGURES 6200B 504.1 Lead Date Collected (m/dd/yy) Depth to Water (ft TOC) MW-1 11/15/2017 3.88 2.77 BQL BQL BQL BQL BQL 20 0.02 400 700 200 15 NOTES: = Concentration exceeds its North Carolina 2L Groundwater Quality Standard (NC2LGWQS) BQL = Below Quantitation Limits ft. TOC = Top of Casing ug/L = micrograms per liter LeadNC2LGWQS (ug/L) Contaminant of Concern Sample ID Methyl tert butyl etherAnalytical Method Twins Grocery Phase I Limited Site Assessment Report NCDEQ Incident No. 46131 Summary of Groundwater Analytical Results Table B-4 Ethylene di-bromideVPH C5-C8 AliphaticsC9-C12 AliphaticsC9-C10 Aromatics WELL ID OWNER NAME SITE ADDRESS MAILING ADDRESS TELEPHONE NUMBERWELL DEPTH (FT.)APPROXIMATE DISTANCE OF WELL FROM SOURCE AREA (FT.)WELL USAGEWSW-1 Nirali Managament, Inc. 5950 Semora Road5950 Semora Road Roxboro, North Carolina 27574(267) 218-6622 300 465 AbandonedWSW-2 Nirali Managament, Inc. 5950 Semora Road5950 Semora Road Roxboro, North Carolina 27574(267) 218-6622 Unknown 80 InactiveWSW-3 Nirali Managament, Inc. 5950 Semora Road5950 Semora Road Roxboro, North Carolina 27574(267) 218-6622 Unknown 80 InactiveWSW-4 Nirali Managament, Inc. 5950 Semora Road5950 Semora Road Roxboro, North Carolina 27574(267) 218-6622Unknown 71 InactiveWSW-5 Wagstaff Farms, LLC No address031 Reams Avenue Roxboro, North Carolina 27573(336) 599-1467 Unknown 464 InactiveWSW-6 Wagstaff Farms, LLC 66 Ceffo Concrod Road031 Reams Avenue Roxboro, North Carolina 27573(336) 599-1467 Unknown 401 InactiveWSW-7 Wagstaff Farms, LLC No address031 Reams Avenue Roxboro, North Carolina 27573(336) 599-1467 Unknown 650 ActiveWSW-8 Concord United Methodist Church 70 Concord Church Road70 Concord Church Road Roxboro, North Carolina 27574(336) 599-6262 Unknown 880 ActiveWSW-9 Victor Ed Clayton 5815 Semora Road160 Wee Loch Drive Cary, North Carolina (919) 467-1082 160 645 InactiveWSW-10 Gary Thomas Clayton 5791 Semora Road5791 Semora Road Roxboro, North Carolina 27574Unknown Unknown 728 Active-- = Information not availableTABLE B-5PROPERTY OWNERS WITH A WATER SUPPLY WELL WITHIN 1,000 FEET OF THE SOURCE AREAPHASE I LIMITED SITE ASSESSMENT REPORT INCIDENT NAME AND NO.: TWINS GROCERY, 46131 Map ID Name Property Address Mailing Address5950 Semora Road 5950 Semora RoadRoxboro, North Carolina 27574 Roxboro, North Carolina 275745310 Semora Road 31 Reams AvenueRoxboro, North Carolina 27573 Roxboro, North Carolina 2757370 Concord Church Road 70 Concord Church RoadRoxboro, North Carolina 27574 Roxboro, North Carolina 27574Map ID numbers are referenced to Figure 3INCIDENT NO. 46131TABLE B-6SURROUNDING PROPERTY OWNERSPHASE I LIMITED SITE ASSESSMENT REPORTTWINS GROCERY SITE5950 SEMORA ROADROXBORO, PERSON COUNTY, NORTH CAROLINA2 Wagstaff Farms, LLC3 Concord United Methodist Church, Inc.1 Nirali Management APPENDIX C RETURNED WATER-SUPPLY QUESTIONNAIRES APPENDIX A BORING LOG AND WELL CONSTRUCTION RECORD Stefan Smith 3576A SAEDACCO Inc X 11-14-2017 MW1 Twins BP 5950 Semora Rd Roxboro, NC 27574 Person County 36., Roxboro, NC, 27574 Persons 36.446794 79.066660 X X 1 20 8 HSA 0 5 2 40 PVC 5 20 2 010 40 PVC 0 3 Portland Pour 4 20 Sand 2 0 20 Silty clayey trace sand 1 foot bentonite seal from 3 to 4 feet. 11/16/2017 APPENDIX B STANDARD SAMPLING PROCEDURES EXHIBIT A Procedures for Developing the Monitoring Wells • Well development will be performed no sooner than 24 hours after well construction is completed. • Wells will be developed by bailing or pumping a minimum of five well-volumes of groundwater from the well. • The turbidity, pH, specific conductivity, dissolved oxygen and temperature of the development water will be measured and recorded, and used as an indicator parameter to determine the completion of the development process. EXHIBIT B Procedures for Collecting Groundwater Samples • Each well will be purged of three standing well volumes prior to sample collection to remove stagnant water from the well and well bore in an effort to collect samples that are representative of the water quality in the formation surrounding each well. • Chemical preservatives, if applicable, will be added to sample bottles by the laboratory. • Sample bottles will be labeled prior to sample collection. • Sample bottles will be filled directly from the Teflon or disposable bailer. Volatile organic samples will be collected first. • The pH, temperature, and specific conductance of the sample will be measured and recorded. These measurements will be taken from a sample deposited in a separate container. Visual characteristics of the sample, including insoluble materials, will be recorded. • Caps will be secured on bottles, bottle will be placed in plastic bags and the bags will be sealed. • Documentation, including Chain-of-Custody Record and laboratory analytical request form, will be completed for all samples. • Samples will be packed in coolers with "bubble wrap" and ice packs for shipment. • Chain-of-Custody Record and analytical request form will be placed inside cooler sealed with security tape. • Samples will be shipped via overnight express to the analytical laboratory within 24 hours following collection. • Laboratory will be advised of each sample shipment. APPENDIX D LABORATORY TEST REPORTS AND CHAINS-OF-CUSTODY