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HomeMy WebLinkAbout22047_University Place Mall_O_UST Lift Closure Rpt_20191104hart hickman SMARTER ENVIRONMENTAL SOLUTIONS Via E-Mail November 4, 2019 State of North Carolina Department of Environment and Natural Resources Division of Waste Management, UST Section 3800 Barrett Drive Raleigh, North Carolina 27609 Attn: Mr. Mark Powers Re: Underground Hydraulic Lift Abandonment and Receptor Survey Results University Place Mall — Chapel Hill Tire Facility 201 S. Estes Drive Chapel Hill, Orange County, NC UST Section Incident No. 46402 H&H Job No. RMR-005 Dear Mark: 1.0 Introduction Hart & Hickman, PC (H&H) has prepared this report to document underground hydraulic lift (UHL) abandonment and receptor survey activities performed at the University Place Mall property located at 201 South Estes Drive in Chapel Hill, Orange County, North Carolina (site). The site consists of one approximately 39.5-acre parcel of land improved with a 365,000-square foot (sq ft) retail shopping building, a 53,000-sq ft grocery store outbuilding, four additional outbuildings, and an associated parking lot that encompasses most of the site. A site location map is included as Figure 1 and a site map is included as Figure 2. This report documents in -place closure of the UHLs in the Chapel Hill Tire (CHT) facility at the site, as well as completion of an updated receptor survey. Based on conversations with NC Department of Environmental Quality (NCDEQ) Underground Storage Tank (UST) Section staff, H&H 2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd, Suite 301 Charlotte, NC 28203 Raleigh, NC 27607 www.harthickman.com 704,586.0007 main 919.847.4241 main Mr. Mark Powers November 4, 2019 Page 2 #C-1269 Engineering #245 Geology understands that the UHL release incident will be eligible for no further action (NFA) status upon completion of these activities. 2.0 Site Background H&H previously conducted Phase I and II Environmental Site Assessment (ESA) activities at the site in April and May 2018. During the Phase I ESA, H&H identified the CHT facility, an automobile repair facility, as a recognized environmental condition (REC) based on the presence of six out -of -use UHLs, a used motor oil above ground storage tank (AST), and interior surface staining. Soil and groundwater sampling was performed during the Phase II ESA to investigate the potential for releases associated with the historic automobile repair operations and the referenced areas of concern at the CHT facility. The results of sampling in the area of the used motor oil AST and surface staining indicated no evidence of impacts above applicable screening levels or typical background levels for metals. However, petroleum impacts were identified in soil and groundwater at concentrations above applicable screening levels in the area of the UHLs. Chlorinated solvent constituents were also detected in soil and groundwater samples. On October 15, 2018, MM PG University Properties, LLC, the property owner at the time, filed a 24-Hour Release and UST Leak Reporting Form (UST-61 Form) to the UST Section indicating that a release incident had occurred from the UHLs at the CHT facility. Based on the chlorinated solvent contamination identified in connection with the CHT facility, Ram Realty Acquisitions V LLC (Ram), the current property owner, elected to pursue a Brownfields Agreement (BFA) for the site and received a Conditional Letter of Eligibility (CLOE) on October 24, 2018. Petroleum impacts associated with the CHT facility are excluded from the CLOE and will be handled separately under the UST Section. The CLOE indicates that execution of a Brownfields Agreement (BFA) is contingent on entry of petroleum contamination associated with the UHLs at CHT to the UST Section and receipt of a NFA, or its equivalent. The May 2018 Phase II ESA sampling included collection of soil samples adjacent to the UHLs in Bays 1, 3, 4, and 6, and collection of groundwater samples adjacent to the UHLs in Bays 3 and S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mail Lift hart ` ! h i c k m a n Abandonment Report.docx SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 3 #C-1269 Engineering #245 Geology 6. Based on discussions with the UST Section, H&H conducted additional assessment activities in March 2019. The scope of work included collection of soil samples adjacent to the UHLs in Bays 2 and 5, since soil samples were not previously collected in the area of these UHLs. Due to shallow groundwater, a groundwater sample was also collected adjacent to the UHL in Bay 5. Following is a summary of soil and groundwater data collected during the May 2018 and March 2019 sampling events with respect to the screening criteria established by the UST Section: Soil Sampling Results • Exceedances of Maximum Soil Contaminant Concentrations (MSCCs) attributed to possible releases from the UHLs include benzene, C9-C18 aliphatics, and/or CII-C22 aromatics at concentrations above Soil -to -Water Maximum Soil Contaminant Concentrations (MSCCs) in Bays 3, 4, and 5, and CI I-C22 aromatics at a concentration above the Residential MSCC in Bay 3. No constituents of concern were detected at concentrations above Industrial/Commercial MSCCs. • Chromium was detected at concentrations above Soil -to -Water and/or Residential MSCCs in several samples, but is attributed to naturally occurring background conditions. • Vinyl chloride was detected at a concentration above the Soil -to -Water MSCC in Bay 3, but is indicative of chlorinated solvents and is being covered under the Brownfields Program. Groundwater Sampling Results • Exceedances of Title 15A NCAC 2L Groundwater Standards (2L Standards) attributed to possible releases from the UHLs include benzene at a concentration above the 2L Standard in Bay 3. No constituents of concern were detected at concentrations above UST Section Gross Contamination Levels (GCLs). • Tetrachloroethylene and vinyl chloride were detected at concentrations above 2L Standards, but are indicative of chlorinated solvents and are being covered under the Brownfields Program. S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mall_Lift hart ` ! h i c k m a n Abandonment Report.docx W_ SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 4 #C-1269 Engineering #245 Geology Refer to the Underground Hydraulic Lift Assessment report submitted to the NCDEQ UST Section on April 24, 2019 for a summary of sampling data collected in the area of the UHLs. Based on review of the report, UST Section staff indicated that the release incident would be eligible for risk -based closure if the UHLs were properly closed and an updated receptor survey was performed confirming that the site qualifies for a low risk ranking. UST Section staff also confirmed that abandonment in -place would be an acceptable method of closure for the UHLs. This report has been prepared to document these additional activities. 3.0 Lift Abandonment Activities Prior to conducting lift abandonment activities, H&H contacted North Carolina 811, the public utility locator, as well as utilized a private utility locator to screen the UHL areas for subgrade utilities. A Health & Safety Plan was also prepared in accordance with Occupational Safety and Health Administration requirements. On September 7 and 8, 2019, H&H contracted with Hazmat Emergency Response and Remediation, Inc. (HERR) to conduct the UHL abandonment activities. The locations of the UHLs at the CHT facility are indicated on Figures 2 and 3. Prior to beginning lift abandonment activities, HERR inspected each lift to determine the current status and suitable methods for abandonment. During the inspections, it was confirmed that the UHLs within Bays 1 and 2 were previously abandoned by filling them with concrete. At the UHL locations in Bays 3 through 6, HERR removed a center bolt and the bolts from a collar securing the hydraulic piston in -place. Once the top of each UHL was removed, HERR utilized a vacuum truck to remove the residual fluids from within each UHL casing. Once the fluids were evacuated from each piston, the pistons were lifted via excavator from the outer casing and residual hydraulic fluid was rinsed from each UHL. A total of 200 gallons of fluid were removed from the UHLs or generated during rinsing and transported off -site for disposal as non -hazardous material. A copy of the non -hazardous liquid waste manifest is provided in Appendix A. S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mail Lift hart ` ! h i c k m a n Abandonment Report.docx SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 5 #C-1269 Engineering #245 Geology Once the hydraulic pistons were removed, HERR then filled each casing with 3,500 pounds per square inch (PSI) concrete to the ground surface. HERR transported the UHL pistons for disposal at a metal salvage yard. A photographic log showing the UHL abandonment activities is provided as Appendix B. 4.0 Updated Receptor Survey Receptor surveys have been performed in the site vicinity during several prior investigations, including a waste oil release at the CHT facility that was granted NFA status (Incident No. 92336), multiple petroleum releases at the Circle K gas station in the southern portion of the property which have also been granted NFA status (Incident Nos. 5371, 33823, and 46404), a dry-cleaning solvent release regulated under the NCDEQ Dry-cleaning Solvent Cleanup Act (DSCA Site No. DC680002), and the chlorinated solvent release in the CHT area regulated under the NCDEQ Brownfields Program (Brownfields Project No. 22047-18-068). This section documents additional receptor survey activities performed to update data gathered during the prior receptor surveys. A completed UST Section Limited Site Assessment Risk Classification and Land Use Form is included in Appendix C. 4.1 Water Supply Wells H&H conducted a water supply well survey for the area within a 1,500-ft radius of the site. The 1,500-ft radius is depicted in Figure 4. The survey included a visual reconnaissance for potential water supply wells and municipal water connections via a drive -through windshield survey. In addition, H&H conducted a desktop review to obtain information regarding water supply connections in the area. The results of the survey indicated that public water service is available and no water supply wells were identified within a 1,500-foot radius of the site. Note that prior receptor surveys also S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mail Lift hart ` ! h i c k m a n Abandonment Report.docx SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 6 #C-1269 Engineering #245 Geology identified no water supply wells in the site vicinity. Based on a discussion with NCDEQ UST Section personnel, a mailing to area property owners was not performed since the recent survey was an update to previously completed surveys. A Notice of Residual Petroleum (NRP) restricting groundwater use was previously implemented for the site property as part of closure of a UST release incident in the southern portion of the property (Circle K Incident No. 46404). Based on discussions with UST Section personnel, H&H understands that this NRP also fulfills groundwater use restrictions required for closure of the CHT incident. 4.2 Public Water Supplies Based on information obtained from the Orange County Water and Sewer Authority (OWASA) website (https://www.owasa.org/drinking-water), public water supplies in the site vicinity are obtained from three surface water reservoirs, Cane Creek Reservoir, University Lake, Quarry Reservoir, and Jordan Lake. None of these reservoirs are located within a 1,500-ft radius of the site. 4.3 Surface Water H&H conducted a survey for surface water bodies in the vicinity of the subject site. The results of the survey indicated no surface water bodies are present within 500 ft of the CHT facility. According to the United States Geological Survey (USGS) topographic map dated 2002, the closest mapped surface water bodies are Booker Creek, which is located approximately 1,100 ft northeast of the CHT facility, and Bolin Creek, which is located approximately 1,200 ft southwest of the CHT facility (Figure 1). According to the NCDEQ Surface Water Classifications geographical information system map, Booker Creek and Bolin Creek are classified as Water Supply IV (WS-IV). S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mall_Lift hart ` ! h i c k m a n Abandonment Report.docx W- SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 7 #C-1269 Engineering #245 Geology 4.4 Wellhead Protection Areas Based on review of the DEQ Public Water Supply Section website (https://nc.maps.arcgis.com/apps/webappviewer/index.html), the site is not located in a wellhead protection area. 4.5 Deep Aquifers in the Coastal Plain According to the Geologic Map of North Carolina dated 1985, the site is located in the Piedmont Physiographic Province of North Carolina and specifically within the Triassic Basin. As such, deep aquifers in the Coastal Plain are not considered a concern for the site. 4.6 Subsurface Structures Visual observations were made for potential subsurface contamination conduits in the immediate vicinity of the release area. Based upon our review, there are no subsurface contamination conduits that would be expected to be a concern. 4.7 Property Owners and Land Use The CHT facility consists of an approximately 7,200-sq ft automotive service garage which is attached to a larger 53,651-sq ft grocery store building. The CHT facility is located within a larger property which contains various commercial buildings referred to as the University Place shopping center. The site property is zoned Community Commercial. The surrounding properties to the north, east, and south are primarily residential, while the surrounding properties to the west are primarily commercial. The nearest sensitive land -use identified in the site vicinity is a church with a daycare located approximately 350 ft east of the CHT facility and Kidzu Children's Museum located within the S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mail Lift hart ` ! h i c k m a n Abandonment Report.docx SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 8 #C-1269 Engineering #245 Geology primary University Mall building approximately 500 ft south of the CHT facility. Land -use within 1,500 ft of the site is depicted on Figure 4. Adjacent property owners and occupants are summarized on Table 1. As previously discussed with UST Section personnel, if the site is granted NFA status, the property owner is agreeable to implementation of a non-residential land -use restriction for the area of the CHT facility. Exceedances of Residential MSCCs were limited to one soil sample below the CHT facility, so this land -use restriction area is anticipated to only encompass the area of exceedances. The property owner is already working with a surveyor to prepare a plat depicting the proposed non-residential restriction area. 5.0 Conclusions and Recommendations Prior assessment activities identified evidence of a release in the area of six out -of -use UHLs at the CHT facility located at the University Place Mall shopping center in Chapel Hill, North Carolina. Based on the results of previous and recent assessment activities, the release incident appears to be eligible for NFA status. Justification for NFA status is detailed further below: • The UHLs have been properly abandoned in -place by filling them with concrete. • The results of an updated receptor survey indicated no water supply wells within 1,500 ft and no surface water bodies within 500 ft of the release source area. • Laboratory analysis of soil samples collected in the area of the UHLs indicated petroleum constituents at concentrations above Soil -to -Water and Residential MSCCs, but below Industrial/Commercial MSCCs. If the site is granted NFA status, the property owner is agreeable to implementation of a non-residential land -use restriction that would be limited to the area of the CHT facility. • Laboratory analysis of groundwater samples collected in the area of the UHLs indicated petroleum constituents at concentrations above 2L Standards, but below GCLs. A NRP restricting groundwater use was previously implemented for the site property as part of S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abandonment\20191025_University Place Mall Lift hart ` ! h i c k m a n Abandonment Report.docx SMARTER ENVIRONMENTAL SOLUTIONS Mr. Mark Powers November 4, 2019 Page 9 #C-1269 Engineering #245 Geology closure of a UST release incident in the southern portion of the property (Circle K Incident No. 46404). Based on discussions with UST Section personnel, H&H understands that this NRP also fulfills groundwater use restrictions required for closure of the CHT UHL release incident. H&H appreciates the opportunity to work with you on this project. Should you have any questions or need any additional information, please feel free to contact us. Sincerely, Hart & Hickman, PC Patrick Stevens Assistant Project Environmental Scientist Attachments 16g.0 ' S:\AAA-Master Projects\Ram Realty - RMR\RMR-005 University Mall\Lift Removal\2019-07_Lift Abaadomneot\20191025_University Place Mall_Lift hart : h i c k m a n Abandonment Report.docx SMARTER ENVIRONMENTAL SOLUTIONS FIGURES APPROXIMATE N 0 2000 4000 SCALE IN FEET U.S.G.S. QUADRANGLE MAP CHAPEL HILL, NORTH CAROLINA (2002) QUADRANGLE 7.5 MINUTE SERIES (TOPOGRAPHIC) OWN&_ _ AST STORAGE ROOM_ ♦�" 'CH4% AP EL HILL TIRE d OFFICE SPACE 1 • i Aral Iryll A ool 4 s r I - FORMER AMERICAN DRY CLEANERS BINKLEY BAPTI CHURCH, SB-2fTMW-7 AST STORAGE ROOM ❑ • O SB-1 LEGEND BAY 1 0 • SB-14 ALIGNMENT RACK SB-16 BAY 2 TIRE STORAGE BORING LOCATION TEMPORARY MONITORING WELL/SOIL BORING COMBINATION UNDERGROUND HYDRAULIC LIFT AND ASSOCIATED —i CONCRETE PAD ❑ NEW ABOVE -GROUND LIFT FOOTING O S�/TMW-6 SIB-4 O SB-17•MW--11 S /TO _g BAY 3 BAY 4 BAY 5 BAY 6 ASPHALT OFFICE S EXTERIOR BUILDING WALL FACILITY DIAGRAM AND SAMPLE LOCATION MAP P�C­ r CHAPEL HILL TIRE FACILITY - UNIVERSITY MALL 201 S. ESTES DRIVE CHAPEL HILL, NC 3921 Sunset Ridge Road, Suite 301 APPROXIMATE hart hickman Raleigh, North Catolina27607 0 10 20 . 919-847-4241(p) 919-847-4261(f) SMARTER ENVIRONMENTAL SOLUTIONS License # C-1269 / #C-245 Geology SCALE IN FEET DATE: 10-22-19 REVISION NO. 0 JOB NO. RMR-005 FIGURE NO. 3 TABLE Table 1 Summary of Adjacent Properties Chapel Hill Tire Facility Chapel Hill, North Carolina H&H Job. No. RMR-005 Parcel ID No. Map ID Property Street Address Owner Owner Address Direction From Site 9799137408 A 991 and 1002 Willow Drive Willow Terrace Dev P.O. Box 2205, Chapel Hill, NC 27514 North 9799234058 B 1712 Willow Drive Olin T Binkley Baptist Church 1712 Willow Drive, Chapel Hill, NC 27514 Northeast 9799228779 C 404 Hickory Drive Mari A Lindsay 404 Hickory Drive, Chapel Hill, NC 27514 East 9799228740 D 406 Hickory Drive John E and Kathryn L Moore 406 Hickory Drive, Chapel Hill, NC 27514 East 9799228630 E 408 Hickory Drive Patricia R Thomas P.O. Box 9532, Chapel Hill, NC 27515 East 9799228530 F 410 Hickory Drive Richard and Alyson Scoltock 410 Hickory Drive, Chapel Hill, NC 27514 East 9799228413 G 412 Hickory Drive Mauricio and Janet Davis Castro 412 Hickory Drive, Chapel Hill, NC 27514 East 9799228326 H 414 Hickory Drive Matthew and Sylvia Steere 414 Hickory Drive, Chapel Hill, NC 27514 East 9799227296 1 416 Hickory Drive Philip H Page 416 Hickory Drive, Chapel Hill, NC 27514 East 9799227197 J 418 Hickory Drive Tabitha S Combs and Thomas M Craven Jr. 418 Hickory Drive, Chapel Hill, NC 27514 East 9799227079 K 420 Hickory Drive William O and Susan B Ward (Trustees) 107 Forest Ridge Drive, Chapel Hill, 27514 East 9799227071 L 422 Hickory Drive David M and Stacie P Belcher 422 Hickory Drive, Chapel Hill, NC 27514 East 9799217962 M 424 Hickory Drive Jason M and Samantha A Anderson 424 Hickory Drive, Chapel Hill, NC 27514 East 9799217853 N 426 Hickory Drive Alexander and Micah McCumber 426 Hickory Drive, Chapel Hill, NC 27514 East 9799217606 O 443 Ridgefield Road Htoo Htoo Kyaw and Ma That 443 Ridgefield Road, Chapel Hill, NC 27514 East 9799310239 P Estes Drive Extension Chapel Hill Housing Authority 405 Martin Luther King Jr. Boulevard, Chapel Hill, NC 27514 Southeast 9799214614 Q 301 S. Estes Drive Public Service Company of NC Inc (C/O Ellen Digh) P.O. Box 1398, Gastonia, NC 28053 Southeast 9799126009 R No Address Camelot Village Homeowners Inc 130 S. Estes Drive, Chapel Hill, NC 27514 South 9799028691 S 129 S. Estes Drive Wachovia Bank NA P.O. Box 2609, Carlsbad, CA 92018 West 9799028796 T 841 Willow Drive Orange Saving & Loan Assoc (C/O National Tax Search LLC) 130 S. Jefferson Street, Suite 300, Chicago, IL 60661 West 9799120807 U 851 Willow Drive Carolina Guys LLC (C/O Bank of American NC1-001- 03-81) 101 N. Tryon Street, Charlotte, NC 28255 West 9799131048 V 861 and 891 Willow Drive Terrace Association Inc* P.O. Box 2205, Chapel Hill, NC 27514* West 9799131396 yy 901 Willow Drive and 110 Connor Drive Doctors Building of Chapel Hill Inc* 901 W. Willow Drive, Chapel Hill, NC 27514* West Notes: Property owner information is based on Orange County GIS Online Database. Contiguous properties are shown on Figure 4. Table 1 (Page 1 of 1) ,�iiaswna�nes,ar wem Reairy-aMR,aMRuos uni�ersiry Mamu'in Ramorsi�o,eui ��rtneaneonmermiaeie,-na�acencvmperry avners ,or�eno,e Hart &Hickman, PC APPENDIX A NON -HAZARDOUS WASTE MANIFEST NON -HAZARDOUS WASTE MANIFEST Please print or type (Form designed for use on elite (12 pitch) typewriter) W F GA Cn 0 a N a z 0 Z NON -HAZARDOUS 1. Generator's US EPA ID No. l �1:� Manifest Document No. 2. Page 1 WASTE MANIFEST J�a-�- of 3. Generator's Name and Mailing Address (:P"UL u; tl ,_O I -,rQv-k VZ !E]�-}`-V 4. Generator / s Pnone ( ) C n .Qit , I 1 I N C, 5. Transporter 1 Company Name 6. US EPA ID Number A. State Transorter's ID HERR.INC• 0 B. Transporter I Phone 910-640-2607 7. Transporter 2 Company Name $. USVA ID Number C. State Transporters ID D. Transporter 2 Phone 9. Designated Facility Name and Site Address 10. US EPA ID Number HERR, INC E. State Facility's 11) 303 S. MAULTSBY ST NCR-000139816 F. Facility's Phone g10-640-2607 WHITEVILLE, NC 28472 11. WASTE DESCRIPTION 12. Containers 13. Total 14. Unit No. Type Quantity W1.1vol. a. NON-REG. PETROLEUM CONTACT WATER 1`7— 6DGAL �2 G It. E N E R �- A T O R G. Additonal Descriptions for Materials Listed Above H. Handling Codes for Wastes Listed Above ( gg��-g 15. Specia[ Handling Instructions and Additional Information 16. GENERATOR'S CERTIFICATION: I hereby certify that the contents of this shipment are fully dnd accurately described and are in all respects in proper condition for transport. The materials described on this manifest are not subject to federal hazardous waste regularons. Date PrintedrTyped Name 49ignature th {lay year t eyy> i+ \ - ,� ° TR 11. Transporter f Acknowledgement of Receipt of Materials Date NP 'ntedrryped Nam Sig t re r Mo Day Year $ P 0 18. Transporter 2 Acknowledgement of Receipt of Materials Date R T PrintedQyped Name Signature Month Day Year E R F 19. Discrepancy Indication Space A C 1 L 20. Facility Owner or Operator; Certification of receipt of the waste materials covered by this maifest, except as noted in item 19. Date T Printedrryped Nam Signature Month Day Year Y C 1 L,�r ­7 F-1402002 LABELAAS M@(W0)621-5808 www.labelmaster.com Rev.3195 PRINTED RE LED PAPER �i.rEo wi.x NSIN fiEAN INK SQYINK APPENDIX B PHOTOGRAPHIC LOG Photograph 1: In -ground hydraulic lift prior to abandonment. Photograph 2: Removal of residual fluids within UHL piston 3921 Sunset Ridge Rd, Suite 301 CHAPEL HILL TIRE FACILITY hard hickman 919 847.4241(p)0 19.723.4261(f) CHAPEL HILL, NORTH CA OLINA Photograph 3: UHL piston extraction Photograph 4: UHL pistons staged for off -site disposal 3921 Sunset Ridge Rd, Suite 301 CHAPEL HILL TIRE FACILITY— UNIVERSITY MALL hart ► NC 0 hi�kman 919 847.4241(p)19.723.4261(f) CHAPEL HILL, NORTH CA OLINA LO 0 0 Photograph 5: Service bays upon completion of UHL abandonment activities 3921 Sunset Ridge Rd, Suite 301 CHAPEL HILL TIRE FACILITY— UNIVERSITY MALL hard hickman 919 847.4241(p)0 19.723.4261(f) CHAPEL HILL, NORTH CA OLINA APPENDIX C RISK CLASSIFICATION AND LAND USE FORM Limited Site Assessment Risk Classification and Land Use Form Part I — Groundwater/Surface WaterNapor Impacts High Risk 1. Has the release contaminated any water supply well including any well used for non -drinking purposes? YES/NO 2. Is a water supply well used for drinking water located within 1,000 feet of the source area of the release? YES/NO 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/NO 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 the groundwater)? YES/NO 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? YES/NO If yes, describe. 6. Are there any other factors that would cause the release to pose an imminent danger to public health, public safety, or the environment? YES/NO If yes, describe. Intermediate Risk 7. Is a surface water body located within 500 feet of the source area of the release? YES/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? YES/NO 8. Is the source area of the release located within an approved or planned wellhead protection area as defined in 42 USC 300h-7(e)? YES/NO If yes, describe. 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? YES/NO If YES, is the source area of the release located in an area in which there is recharge to an unconfined or semi -confined deeper aquifer that is being used or may be used as a source of drinking water? YES/NO If YES, describe. 10. Do the levels of groundwater contamination for any contaminant exceed the gross contamination levels (See Table 2.) established by the Department? YES/NO Part II - 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)? YES/NO Describe. 2. Does the property contain a school, daycare center, hospital, playground, park, recreation area, church, nursing home, or other place of public assembly? YES/NO Describe. The property contains Kidzu, which is a children's museum and recreational facility located approximately 500 ft south of the CHT facility. However, Kidzu is located well outside the area where constituents of concern were detected at concentrations above Residential MSCCs (limited to benzene in one sample collected below the CHT facility). 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/NO Describe. The property contains University Place Mall shopping center. Do children visit the property? YES/NO Explain. Children likely visit the shopping mall and additional outbuildings located on the parent parcel. However, children are unlikely to be present within the CHT auto repair bays where constituents of concern were detected at concentrations above Residential MSCCs. Is access to the property reliably restricted consistent with its use (e.g., by fences, security personnel or both)? YES/NO Explain. Access to the public portions of the property is not restricted; however, public access to the CHT auto repair bays where constituents of concern were detected at concentrations above Residential MSCCs is unlikely. 4. Do pavement, buildings, or other structures cap the contaminated soil? YES/NO Describe. The area of contaminated soil is located below the existing CHT facility building. If yes, what mechanisms are in place or can be put into place to ensure that the contaminated soil will remain capped in the foreseeable future? The site contains an active shopping center and the area of contaminated soil is unlikely to be uncapped in the future. Land -use restrictions could be put into place ensuring that the area of contaminated soil remains capped, if required by NCDEQ. 5. What is the zoning status of the property? Community Commercial 6. Is the use of the property likely to change in the next 20 years? YES/NO Explain. Redevelopment is proposed in the area of the main University Place Mall building and several outbuildings; however, no redevelopment is proposed in the area of impacted soil located below the CHT facili 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)? Approximately 180 feet north 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? Approximately 350 feet east 2. What is the zoning status of properties in the surrounding area? Residential and Community Commercial 3. Briefly characterize the use and activities of the land in the surrounding area. The land use in the area surrounding the site is used primarily for residential homes and commercial office space. A church with a daycare is also located adjacent to the site property to the east.