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HomeMy WebLinkAboutRA-2925_19630_CA_LSA_20120120_Phase1Phase II Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, NC January 20, 2012 i TABLE OF CONTENTS SITE IDENTIFICATION ....................................................................................................................... iii 1.0 SCOPE OF SERVICES ............................................................................................................... 1 2.0 SITE HISTORY ............................................................................................................................. 2 3.0 RECEPTOR INFORMATION .................................................................................................... 3 3.1 WATER SUPPLY WELLS .................................................................................................................. 3 3.2 PUBLIC WATER SUPPLIES ............................................................................................................... 3 3.3 SURFACE WATER ............................................................................................................................ 3 3.4 WELLHEAD PROTECTION AREAS .................................................................................................... 4 3.5 SUBSURFACE STRUCTURES ........................................................................................................... 4 3.6 PROPERTY OWNERS AND OCCUPANTS .......................................................................................... 4 3.7 RISK CLASSIFICATION ..................................................................................................................... 4 4.0 SITE GEOLOGY AND HYDROGEOLOGY .......................................................................... 5 4.1 SOIL LITHOLOGY .............................................................................................................................. 5 4.2 GROUNDWATER FLOW AND HYDRAULIC GRADIENT ....................................................................... 5 5.0 SAMPLING RESULTS ................................................................................................................ 6 5.1 SOIL SAMPLING METHODOLOGY ..................................................................................................... 6 5.2 SOIL SAMPLING RESULTS ............................................................................................................... 7 5.3 GROUNDWATER MONITOR WELL INSTALLATION AND SAMPLING METHODOLOGY ........................ 7 5.4 GROUNDWATER SAMPLING RESULTS ............................................................................................. 8 6.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................. 9 TABLES TABLE 1 UST SYSTEM INFORMATION TABLE 2 UST OWNER/ OPERATOR INFORMATION TABLE 3 RECEPTOR INFORMATION AND ADJACENT PROPERTY OWNERS TABLE 4 MONITOR WELL CONSTRUCTION DETAILS AND GROUNDWATER ELEVATION DATA TABLE 5 SOIL FIELD SCREENING RESULTS TABLE 6 SUMMARY OF SOIL ANALYTICAL RESULTS TABLE 7 SUMMARY OF GROUNDWATER ANALYTICAL RESULTS FIGURES FIGURE 1 VICINITY MAP FIGURE 2 SITE MAP WITH MONITOR WELL LOCATIONS FIGURE 3 RECEPTOR SURVEY MAP WITH ADJACENT PROPERTY OWNERS FIGURE 4 GROUNDWATER ELEVATION MAP FIGURE 5 SOIL CONSTITUENT MAP FIGURE 6 GROUNDWATER CONSTITUENT MAP Phase II Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, NC January 20, 2012 ii TABLE OF CONTENTS (CON'T) APPENDICES APPENDIX I LIMITED HISTORICAL INFORMATION APPENDIX II LIMITED SITE ASSESSMENT RISK CLASSIFICATION AND LAND USE FORM APPENDIX III PHOTOGRAPHIC LOG APPENDIX IV WATER SUPPLY WELL SURVEYS APPENDIX V WELL CONSTRUCTION RECORDS AND SOIL BORING LOG APPENDIX VI LABORATORY ANALYTICAL REPORT AND CHAIN OF CUSTODY FORM APPENDIX VII FIELD MEASUREMENT SHEET Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 1 1.0 SCOPE OF SERVICES The scope of services performed for this report was performed in general accordance with S&ME’s Proposal No. P161-11V, dated September 22, 2011, and as authorized by North Carolina Department of Environment and Natural Resources (NCDENR’s) Task Authorization No. 01, dated November 10, 2011 and within NCDENR’s Contract No. 16- 1713-3C for the Eastern Region. S&ME’s approved Scope of Services for this Task Authorization was to complete the initial project review and prepare a Phase II Limited Site Assessment (LSA), which included preparing a health and safety plan, conducting a receptor survey, installing three groundwater monitor wells, collecting soil samples from each borehole, collecting one groundwater sample from each monitor well, measuring the relative top of casings of three groundwater monitoring wells and preparing this Phase I LSA report. S&ME completed the following scope of services:  Performed a file review and setup;  Prepared a site specific Health and Safety Plan;  Installed three groundwater monitor wells (MW-1 to 42 ft. bgs, MW-2 to 22 ft. bgs, and MW-3 to 22 ft. bgs);  Collected soil samples from each boring;  Sampled three groundwater monitoring wells (MW-1, MW-2, and MW-3);  Measured the relative top of casing elevations for three monitoring wells (MW-1, MW-2, and MW-3);  Conducted a site reconnaissance and receptor survey; and,  Prepared this Phase II LSA Report. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 2 2.0 SITE HISTORY The Union Missionary Baptist Church site is located at 907 N. Roxboro Street, Durham, Durham County, North Carolina. The site and vicinity are shown on Figure 1, and the site with monitor well locations is shown on Figure 2. The site is currently serves as a parking lot for the Union Missionary Baptist Church across N. Roxboro Street to the east. In a June 3, 2011 memorandum from Mark Powers of the NCDENR Raleigh Regional Office to George Mathis of the Trust Fund Branch, the site served as a gasoline service station until some time in the 1970’s. The property was purchased by Union Missionary Baptist Church in 1982 in a foreclosure sale. In preparation for construction related activities at the site, Union Missionary Baptist Church contracted to have the three known USTs on site removed. According to the Report of Environmental Services and Closure of Three Underground Storage Tanks prepared by Mid-Atlantic Associates, P.A. (Mid-Atlantic), and dated October 22, 1998, one 7,500-gallon kerosene and two 7,500-gallon gasoline/diesel underground storage tanks (USTs) were closed by removal. The UST System information is provided in Table 1. Mid-Atlantic reported free product beneath the gasoline/diesel tanks, approximately 59 gallons of which was removed from the excavation. According to the chronology prepared by the Raleigh Regional Office (RRO) dated June 3, 2011, approximately 2,644 tons of contaminated soil was removed from the excavation. Soil samples reported total petroleum hydrocarbons (TPH) above the North Carolina Action Levels. Two additional USTs were discovered during paving activities at the site, according to Mid-Atlantic’s Report of Environmental Services and Closure of Two Underground Storage Tanks dated April 29, 1999. The 30-gallon hydraulic oil and 8,000-gallon gasoline/diesel tanks were closed by removal (Table 1). Approximately 30 gallons of hydraulic oil and 6,700 gallons of sludge were removed from the USTs. Soils surrounding the hydraulic oil UST were reportedly screened for volatile organic compounds (VOCs) and found to be impacted; 48.53 tons of soil was removed from the excavation. Based on screening results, 24.06 tons of potentially impacted soil was removed from the 8,000-gallon gasoline UST basin. Samples collected from beneath both tanks reported detections of TPH above the Action Levels. Limited historical information is provided in Appendix I. The UST system owner/ operator information may be found in Table 2. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 3 3.0 RECEPTOR INFORMATION S&ME, Inc., (S&ME) performed a receptor study in general accordance with the NCDENR Guidelines for Assessment and Correction Action, December 2008 (Guidelines). The Limited Site Assessment Risk Classification and Land Use Form is included in Appendix II. Information pertaining to the receptors identified within 1,500 feet of the subject site is summarized below. Figure 3 shows the locations of adjacent property owners and identified water supply well. A photographic log of the site is included in Appendix III. 3.1 Water Supply Wells On December 2, 2011, S&ME personnel conducted a site reconnaissance and receptor survey for the Union Missionary Baptist Church property. During the receptor survey S&ME identified one possible water supply well within 1,500 feet of the source area. The property lies approximately 750 feet southeast of the site, and according to the City of Durham Department of Water Management, the property is connected to city water. Evidence of municipal water connections (water meters, fire hydrants) were observed within 1,500 feet of the site. No additional water supply wells were noted during the receptor survey update. The location of the identified water supply well is shown in Figure 3 and is labeled WSW-1. Adjacent property owner information is included in Table 3. The letters requesting water supply well information were mailed to 25 addresses located within 250 feet of the subject site. To date, nine responses have been received. If information is received by S&ME that requires an update to the receptor survey, S&ME will submit an addendum to this report. A copy of the Request for Water Supply Well Information Letter and the responses to the letter received by S&ME are included in Appendix IV. Information pertaining to the water supply wells and adjacent property owner information is included in Table 3. City of Durham utilities are available to all properties within 1,500 ft of the site. 3.2 Public Water Supplies S&ME personnel observed fire hydrants and water meters along the streets located within 1,500 feet of the subject property. According to the City of Durham Department of Water Management, water is obtained from Lake Michie and the Little River Reservoir, and is treated at the Brown and Williams Treatment Plants. 3.3 Surface Water According to the 1973 Southwest Durham NC USGS Quadrangle Map, and S&ME’s site reconnaissance, no surface water bodies were identified within 1,500 feet of the subject site. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 4 3.4 Wellhead Protection Areas S&ME personnel accessed the NCDENR Wellhead Protection Program website at <http://www.deh.enr.state.nc.us/pws/wellhead/update/approved_wellhead_plans.htm> on December 22, 2011. According to the Source Water Area Protection (SWAP) Report for the City of Durham, the site is not located within a designated protected wellhead area. 3.5 Subsurface Structures Municipal water and sewer lines are located along Roxboro Street to the east and along Dowd Street to the north of the subject property. No additional subsurface structures, such as vaults or basements, were identified on the site and adjoining properties. 3.6 Property Owners and Occupants The names and addresses of the property owners and occupants within and contiguous to the site are summarized in Table 3. These properties are identified numerically on the Adjacent Owner map which is included as Figure 3. According to the Durham Zoning Atlas Map 0832, available online at http://www.durhamnc.gov/departments/planning/atlas/zas_0832.pdf, the site is within a zone of mixed residential and commercial-residential. Surrounding properties are primarily single and multi-family residences. Global Scholars Academy, an elementary school and day care center, and the Union Missionary Baptist Church are also adjacent to the property. 3.7 Risk Classification Based on the information from the receptor survey (no known active water supply wells within 1,500 ft of the site) and the groundwater quality the site meets NCDENR’s criteria for a classification as a low risk site. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 5 4.0 SITE GEOLOGY AND HYDROGEOLOGY According to the Geologic Map of North Carolina, dated 1985, the site is located within the Piedmont Region of North Carolina. More specifically, the site is within the Deep River Basin and consists of sedimentary rocks including sandstones, mudstones, and conglomerates. 4.1 Soil Lithology S&ME personnel accessed the United States Department of Agriculture website at <http://websoilsurvey.nrcs.usda.gov/> on December 21, 2011. According to the internet- based Soil Survey of Durham County, North Carolina, prepared by the United States Department of Agriculture and the Natural Resources Conservation Service, surficial soils in the vicinity of the site have been classified as White Store soils which consist of sandy loam, clay and clayey loam. The soils are moderately drained with slopes of ten to twenty percent. Soils encountered during the installation of the monitor wells consisted of sandy loam, sandy silt, clay, and clayey loam. Copies of the soil boring logs are included in Appendix V. 4.2 Groundwater Flow and Hydraulic Gradient S&ME personnel used an electronic water level indicator to measure the depth-to- groundwater from the top of the groundwater monitoring wells MW-1, MW-2, and MW-3 on December 2, 2011. Groundwater was measured at 10.25 feet below the top of casing (BTOC) in MW-1, 12.56 ft BTOC in MW-2, and 9.99 ft BTOC in MW-3. The groundwater level measurements and monitor well construction details from the December 2, 2011 sampling event are summarized in Table 4. Due to the positioning of the monitoring wells, it is not possible to calculate an accurate groundwater flow map. Groundwater elevations are presented in Figure 4. Based upon the topography of the site, drainage is generally to the east. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 6 5.0 SAMPLING RESULTS The project was performed under a site-specific health and safety plan prepared by S&ME. Field activities were performed in general accordance with the procedures outlined in the Guidelines. The investigative derived wastes (IDW), such as soil cuttings, decon water, and purge water, that were generated during the field activities were disposed in accordance with the procedures specified in the Guidelines. The purge water and soil cuttings were spread on the ground at the site. Equipment used to advance the borings and to collect samples was decontaminated before and after its use to minimize the potential transfer of contaminated media. 5.1 Soil Sampling Methodology On December 1 and 2, 2011, the soil borings for monitor wells MW-1, MW-2, and MW- 3 were advanced using a track-mounted Geoprobe® with the ability to turn 3-1/4-inch inside diameter hollow-stem augers, as well as air rotary technology. Each soil boring was advanced with direct push technology to refusal, and then drilled using the air hammer to first groundwater. The soil boring for MW-1 was advanced in the northeastern portion of the site in the general area of UST-2 and UST-3. The soil boring for MW-2 was advanced near the former UST-4. MW-3 was advanced near the former UST-5 and UST-1. Figure 5 presents the soil boring locations. The boring logs and monitoring well construction records are included in Appendix V. During the installation of the soil borings, subsurface soil samples were collected in five- foot long macro core samplers that were advanced prior to drilling. Soil recovered in the sample tubes was classified on-site by S&ME personnel and screened with a Photo Ionization Detector (PID) at 5-foot intervals to measure relative headspace concentrations of VOCs. VOC headspace readings were obtained from an aliquot of each soil sample that was placed in a re-sealable bag. Another portion of the sample was placed in a laboratory-supplied container and stored in an insulated container with ice for possible laboratory analyses. After waiting approximately 15 minutes to allow the sample to reach ambient temperature and headspace equilibrium, the PID probe was inserted into the bag to obtain a headspace reading. The field screening results for the soil borings completed at the site are summarized in Table 5. Two soil samples were collected at different intervals from the soil boring associated with monitor well MW-1. Soil sample MW-1-5 was collected from the interval from 3 to 5 feet below ground surface (ft bgs), and soil sample MW-1-8 was collected from the interval from 6 to 8 ft bgs. One soil sample was collected from the soil boring associated with monitor well MW-2. Soil sample MW-2-8 was collected from the interval from 6 to 8 ft bgs. Soil samples MW-3-2 and MW-3-9 were collected from the soil boring associated with MW-3 and were collected between 1 to 2 ft bgs and 7 to 9 ft bgs, respectively. The soil samples were shipped under standard Chain-of-Custody procedures to Prism Laboratories, Inc., a North Carolina certified laboratory, located in Charlotte, North Carolina. Soil samples MW-1-5 and MW-1-8 were analyzed for VOCs by EPA Method 8260B, Semi Volatile Organic Compounds (SVOCs) by EPA Method 8270D, and for Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 7 extractible petroleum hydrocarbons (EPH) and volatile petroleum hydrocarbons (VPH) by the Massachusetts Department of Environmental Protection (MADEP) Method. Soil samples MW-3-2 and MW-3-9 were analyzed for EPH and VPH by the MADEP Method and for SVOCs by EPA Method 8270D. Soil sample MW-2-8 was analyzed for EPH by the MADEP Method and for SVOCs by EPA Method 8270D. 5.2 Soil Sampling Results The laboratory analytical results of soil samples indicated that several target constituents were detected in concentrations above the laboratory method detection limits in sample MW-2-8. Two SVOCs, 2-methylnaphthalene at 4.1 milligrams per kilogram (mg/kg) and naphthalene at 0.25 mg/kg were detected above the Soil-to-Groundwater Maximum Soil Contaminant Concentrations (MSCCs). Carbon chain C9-C18 aliphatics and carbon chain C9-C22 aromatics were reported above the Soil-to-Groundwater MSCCs at 830 mg/kg and 290 mg/kg, respectively. No other samples reported detections above the laboratory method detection limits. A summary of the laboratory analytical results for the soil samples is presented in Table 6. The laboratory analytical report for the soil samples is included in Appendix VI. Soil contaminant concentrations are shown on Figure 5. 5.3 Groundwater Monitor Well Installation and Sampling Methodology On December 1 and 2, 2011, the soil borings were converted into groundwater monitoring wells MW-1, MW-2, and MW-3 by installing a section of two-inch diameter polyvinyl chloride (PVC) slotted (0.010-inch) screen and sufficient riser pipe to bring the well to ground surface. The wells were completed by placing #2 type filter sand in the boring annulus to approximately one foot above the screen section (sand pack). Approximately one foot of hydrated bentonite was tremied above the sand pack, and neat cement grout was then tremied from the top of the bentonite to approximately six inches bgs. The new wells extend to the ground surface where they were encased with flush mount protective steel casings with bolted manhole covers. The monitoring well construction details are summarized in Table 4. Monitoring well MW-1 was installed to a depth of 42 ft bgs, monitoring well MW-2 was installed to a depth of 22 ft bgs, and MW- 3 was installed to a depth of 22 ft bgs. Following the monitor well construction, S&ME personnel measured the groundwater levels and collected groundwater samples from the three wells. Prior to sampling, the monitor wells were purged by evacuating groundwater from the wells until the groundwater became relatively clear using a new polyethylene bailer. A minimum of three volumes of groundwater were purged from the monitor wells to remove stagnant water. Field parameters were measured after each well volume was purged for pH, temperature, and specific conductance. Groundwater samples were collected from the monitor wells using a decontaminated bailer. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 8 Containers provided by the laboratory were filled directly from the bailer, labeled, and placed in an insulated cooler with ice for transport to the laboratory for analysis. Field measurement sheets are included in Appendix VII. Sample management was documented from collection through delivery to Prism for analysis following standard chain-of-custody procedures. Groundwater samples from MW-1 and MW-3 were analyzed for VPH/EPH by the MADEP Method, SVOCs by EPA Method 625, VOCs by EPA Method 6200B, and lead by EPA Method 3030C. The groundwater sample from MW-2 was analyzed for EPH by the MADEP Method and SVOCs plus tentatively identified compounds (TICs) by EPA Method 625. 5.4 Groundwater Sampling Results The laboratory analytical results for groundwater samples collected on December 2, 2011 from monitor wells MW-1, MW-2, and MW-3 indicated that the following contaminant constituents were detected at levels above the North Carolina Groundwater Quality 2L Standards:  bis(2-ethylhexyl)phthalate in MW-1:  naphthalene in MW-2 and MW-3;  2-methylnaphthalene in MW-2;  C9-C22 aromatics in MW-2; and,  lead in MW-3. Several target constituents were reported above the laboratory method detection limits, and TICs were identified during the laboratory analysis. The TICs can be seen in the laboratory analytical report included as Appendix VI. A summary of the groundwater analytical results and a comparison to NCDENR’s regulatory standards and levels is included on Table 7. The groundwater contaminant concentrations are shown on Figure 6. A copy of the laboratory analytical results and chain of custody form is included in Appendix VI. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 9 6.0 CONCLUSIONS AND RECOMMENDATIONS A Phase II LSA was conducted at the Former Union Missionary Baptist Church located at 907 North Roxboro Street in Durham, Durham County, North Carolina to assess potential petroleum impact to soil and groundwater from USTs formerly located at the site. The findings at the site are as follows:  The site is currently developed as a parking lot for the Union Missionary Baptist Church. A service station occupied the site until the 1970s. On September 29, 1998, two 7,500-gallon gasoline/diesel/kerosene USTs and one 7,500-gallon kerosene UST were removed from the site by Mid-Atlantic. Approximately 2644 tons of petroleum contaminated soils were excavated and removed from the site at the time of UST closure. The laboratory analytical results of the post-excavation confirmatory soil samples indicated that Total Petroleum Hydrocarbons (TPHs) were detected in soils from the excavations. Risk-based analysis was not performed. Free product was observed in the tank pit beneath UST-1 and UST-2. According to the Mid-Atlantic UST Closure Report (1998), approximately 59 gallons of product was removed from the excavation. No product was observed beneath the 7,500-gallon kerosene UST. Soils removed from the excavation were disposed off site.  In 1999, two additional USTs were discovered during subsequent grading activities at the site; one 30-gallon hydraulic oil tank and one 8,000-gallon gasoline/diesel tank. The 30-gallon UST was closed by removal on March 30, 1999 and the 8,000 gallon UST was closed by removal on April 7, 1999. Soil samples were collected and submitted for laboratory analysis of metals and total petroleum hydrocarbons, volatile and semi-volatile range. Detections of semi- volatile TPH and oil and grease were detected in soils removed from the tank pits.  Laboratory analytical results of the soil samples collected on December 1 and 2, 2011 during the installation of MW-2 reported the detections of 2- methylnaphthalene, naphthalene, C9-C18 aliphatic carbon fraction, and C9-C22 aromatic carbon fraction above the soil-to-groundwater MSCCs.  The laboratory analytical results of the groundwater samples collected on December 2, 2011 from MW-1 and MW-2 reported detections of three SVOCs and one carbon chain C9-C22 aromatic above the 2L Standards, and MW-3 reported one VOC and lead above the 2L Standards.  The results of the December 2011 receptor survey indicated that municipal water is available to the site and properties within 1,500 feet of the site. Nine of twenty- five water supply well surveys were returned with no reports of supply wells indicated. One possible water supply well, located approximately 750 feet southeast of the site, was noted within 1,500 feet of the site during the area reconnaissance; according to the City of Durham Department of Water Management, the residence is connected to city water. No other water supply wells were noted during the survey. Phase l Limited Site Assessment S&ME Project No. 1354-11-250 TF-19630 Union Missionary Baptist Church, Durham, Durham County, NC January 20, 2012 10  Based on the results of the groundwater quality results the site meets the criteria to be ranked as low risk. No active water supply wells were reported within 1,000 feet of the site. Soil analytical results indicated detections of petroleum-related constituents above the Soil-to Groundwater MSCCs, but below the Residential MSCCs, and groundwater analytical results indicated detections of petroleum-related constituents above the 2L Standards, but below the Gross Contamination Levels (GCLs). Based upon this information, the site may be eligible for closure with land use restriction. TABLES UST ID Number Contents Capacity (gallons) Tank Dimensions Date Installed Date Closed Closed / Active Release from System 1 Kerosene 7,500 8' diameter 20'2" length Unknown 9/28/1998 Closed Yes 2 Gasoline/diesel 7,500 8' diameter 20'2" length Unknown 9/28/1998 Closed Yes 3 Gasoline/diesel 7,500 8' diameter 20'2" length Unknown 9/28/1998 Closed Yes 4 Hydraulic oil 30 1.8' diameter 2.8' length Unknown 3/25/1999 Closed Yes 5 Gasoline/oil/kerosene 8,000 8' diameter 19.75' length Unknown 4/7/1999 Closed Yes Notes: Tanks were closed by removal. Tank information according to the 1998 Mid-Atlantic UST Closure Report, and the 1999 Mid-Atlantic UST Closure Report. Durham, Durham County, North Carolina S&ME Project No. 1354-11-250 TABLE 1 Union Missionary Baptist Church UST System Information 907 North Roxboro Street NCDENR Incident No. 19360 UST Information Owner/ Operator Dates of Operation 7,500-gallon gasoline/diesel Unknown 7,500-gallon gasoline/diesel Unknown 7,500-gallon kerosene Unknown 30-gallon hydraulic oil Unknown 8,000-gallon gasoline/diesel/kerosene Unknown UST information according to the 1998 Mid-Atlantic UST Closure Report, and the 1999 Mid-Atlantic UST Closure Report. Notes: Three tanks were removed on 9/28/1998, two additional tanks were removed on 3/25/1999 and 4/7/1999 NCDENR Incident No. 19630 S&ME Project No. 1354-11-250 TABLE 2 UST Owner/Operator Information 907 North Roxboro Street Durham, Durham County, North Carolina Union Missionary Baptist Church Unknown Adjacent Property Owners Page 1 of 1 Map ID Parcel Number Location Usage Distance from sourcearea of release(feet) 1 0831-05-18-2916 210 Dowd Street Residential 75 feet 2 0831-05-18-2981 905 Roxboro Street Residential 75 feet 3 0831-05-18-5832 904 North Roxboro Street Church 80 feet 4 0831-05-19-5290 311 Dowd Street School 100 feet 5 0831-05-19-3130 1001 Roxboro Street Residential 50 feet 6 0831-05-19-2150 209 Dowd Street Residential 75 feet Public and Private Water Supply Wells Map ID /WellID Parcel Number Well Owner Property Address Owner Address Phone Number Well Use Well Depth (ft bgs) Well Casing Depth (ft. bgs) Well Screen Interval (x to yft. bgs) Distance from source area of release (feet)Comment WSW-1 110646 Joel and Laura Renteria 402 GrayAvenue 2006 Stadium Drive, Durham NC 27705 not listed Unknown Unknown Unknown Unknown 750 feet southwest Connected to muncipal water supply. Notes: ft. bgs - Feet Below Ground SurfaceRefer toFigure 3for Adjacent PropertyOwner Map.Propertyaddress information obtained from Durham CountyGIS on December 21,2011. Union MissionaryBaptist Church Union MissionaryBaptist Church TABLE 3 Receptor Information and Adjacent Property Owners Union Missionary Baptist Church 907 North Roxboro Street Church is connected to municipal water. School is connected to municipal water. Residence borders site on the west Union MissionaryBaptist Church Durham, Durham County, North Carolina NCDENR Incident No. 19630 S&ME Project No. 1354-11-250 Extension of church parking lot borders site on the south Union MissionaryBaptist Church Description Contact/Telephone Number Residence connected to municipal water. Residence connected to municipal water. Comment Residence borders site to the northwest Residence connected to municipal water.Madlin and Louis Green Residence borders site to the north Lester Lee Smith Residence connected to municipal water. Church borders site on the east School borders site to the northeast Well ID Date Installed Well Casing Depth (ft-bgs) Screened Interval (x to y ft-bgs) Well Material Well Diameter (inches) Total Well Depth from Top of Casing (ft.) Top of Casing Elevation (ft-rel) Date of Measurement Depth to Water (ft-BTOC) Groundwater Elevation (ft-rel) MW-1 12/1/2011 42 42-22 PVC 2 41.6 399.70 12/2/2011 10.25 389.45 MW-2 12/2/2011 22 22-12 PVC 2 22.9 399.22 12/2/2011 12.56 386.66 MW-3 12/2/2011 22 22-12 PVC 2 22.0 398.05 12/2/2011 12.01 386.04 Notes: 1. ft-bgs = feet below ground surface 2. ft-rel. = TOC elevations measured by S&ME 1/2/2012 to assumed benchmark elevation of 400.00 feet (reference sidewalk at the southwest corner of Dowd and Roxboro Streets) see Figure 2. 3. ft-BTOC = feet below top of casing 4. Monitor wells MW-1, MW-2, and MW-3 sampled on December 12, 2011 after installation. Durham, Durham County, North Carolina NCDENR Incident No. 19630 S&ME Project No. 1354-11-250 TABLE 4 Monitor Well Construction Details and Groundwater Elevation Data Union Missionary Baptist Church 907 North Roxboro Street 0.0-5.0 22.0 5.0-9.0 11.1 9.0-10.0 0.3 0.0-5.0 5.6 5.0-8.0 1,286.0 0.0-2.0 1.5 2.0-5.0 1.3 5.0-7.0 0.8 7.0-9.0 1.2 Notes: 1. FT-BGS: feet below ground surface 2. PID: Photo-Ionization Detector 3. PPM: parts per million (volume/volume) 4. Bold and highlighted fields indicate that sample was submitted to the laboratory for analysis. Sample Interval (ft-BGS) PID Readings (ppm) TABLE 5 Soil Field Screening Results Union Missionary Baptist Church 907 North Roxboro Street Durham, Durham County, North Carolina NCDENR Incident No. 19630 MW-1 12/1/2011 12/2/2011 MW-2 MW-3 12/1/2011 S&ME Project No. 1354-11-250 Sample Identification Boring Date Volatile Organic Compounds (VOCs) by EPA Method 8260B (mg/Kg) Date Depth (ft-bgs) MW-1-5 12/1/2011 3-5 BDL <0.15 <0.12 <0.16 <14 <40 <12 <40 MW-1-8 12/1/2011 6-8 BDL <0.14 <0.10 <0.14 <14 <39 <11 <39 MW-2-8 12/1/2011 6-8 NR 4.1 0.30J 0.25J NR 830.0 <0.12 290 MW-3-2 12/2/2011 1-2 NR <0.14 <0.11 <0.14 <14 <39 <11 <39 MW-3-9 12/2/2011 7-9 NR <0.14 <0.11 <0.14 <17 <41 <11 <41 Constituent-Specific 3.6 4.7 0.16 68 540 NE 31 Constituent-Specific 63 62 313 939 1,500 NE 469 Constituent-Specific 1,635 1,635 8,176 24,528 40,000 NE 12,264 Notes: 1. Analytes from the method suite that are not shown were not detected. 2. All concentrations are reported in milligrams per kilogram (mg/Kg). 3. MSCC: Maximum Soil Contaminant Concentration 4. Ft-bgs: Feet below ground surface 5. VOCs: Volatile Organic Compounds 6. SVOCs: Semi-Volatile Organic Compounds 7. MADEP - Masachussetts Department of Environment and Protection 8. VPH Volatile Petroleum Hydrocarbons 9. EPH - Extracable Petroleum Hydrocarbons 11. All samples that exceed the soil-to-groundwater MSCC are shown in Shaded and BOLD fields. 12. Concentrations exceeding the laboratory's reporting limits are shown in BOLD fields. 13. Soil samples SB-1 and SB-2 were collected from the soil borings converted to monitor wells MW-1 and MW-2. 14. NR: Laboratory analysis not requested for sample. 15. BDL: Below Detection Limits 16. J: Detected above the laboratory method detection limit, but below the reporting limit and is therefore and estimated concentration.dibenzofuranIndustrial/Commercial MSCCs Contaminant of Concern Soil to Groundwater MSCCs Residential MSCCs 2-methylnaphthaleneC9-C22AromaticsC19-C36AliphaticsC9-C18AliphaticsC5-C8AliphaticsnaphthaleneS&ME Project No. 1354-11-250 Sample ID MADEP VPH/EPH (mg/Kg) Semi-Volatile Organic Compounds (SVOCs) by EPA Method 8270D (mg/Kg) Constituent-Specific TABLE 6 Summary of Soil Analytical Results Union Missionary Baptist Church 907 North Roxboro Street Durham, Durham County, North Carolina NCDENR Incident No. 19630 Lead by EPA Method 3030C (µg/L) Contaminant of Concern Date MW-1 12/2/2011 <0.038 <0.038 <0.059 <0.054 0.7 <0.034 <0.11 <0.056 <0.094 <0.059 <0.059 <0.54 <0.17 <1.8 <2.1 21 7.0J <0.73 <50 <150 <100 <150 MW-2 12/2/2011 NA NA NA NA NA NA NA NA NA NA NA NA NA 58 35 <3.4 <2.6 NA NA 190 NA 440 MW-3 12/2/2011 34 3.0 1.2 2.8 21 1.9 12 3.0 21 2.4 4.7 1.2 12 <1.9 <2.2 <3.6 <2.8 32 23J <100 <100 <150 400 400 NE 600 70 70 500 20 6 70 70 70 500 6 30 3 1,000 15 400 700 10,000 200 28,500 28,500 NE 84,500 70,000 25,000 85,500 20,000 6,000 6,900 30,000 8,500 85,500 6,000 12,500 170 NE 15,000 NE NE NE NE Notes: 1. Analytes that are not shown were not detected. 2. All concentrations are reported in micrograms per liter (µg/L). 3. 2L Standard: North Carolina Groundwater Quality Standards: 15A NCAC 2L.0202 4. VOCs: Volatile Organic Compounds 5. SVOCs: Semi-Volatile Organic Compounds 6. MADEP: Massachusetts Department of Environmental Protection 7. VPH: Volatile Petroleum Hydrocarbons 8. EPH: Extractable Petroleum Hydrocarbons 9. NE: Regulatory standard not established for contaminant 10. All samples that exceed the 2L Standards are shown in Shaded and BOLD fields. 11. Concentrations exceeding the laboratory's reporting limits are shown inBOLD fields. 12. NR: Analysis Not Requested 13. J: Detected above the laboratory method detection limit, but below the reporting limit and is therefore and estimated concentration. NCDENR Incident No. 19630 Gross Contamination Levels 2L Standards TABLE 7 Summary of Groundwater Analytical Results Sample ID MADEP VPH/EPH (µg/L) Union Missionary Baptist Church 907 North Roxboro Street Volatile Organic Compounds (VOCs) by EPA Method 6200B (µg/L) Durham, Durham County, North Carolin S&ME Project No. 1354-11-250 1,2,4-trimethylbenzene1,3,5-trimethlybenzene4-isopropyltolueneethylbenzeneisopropyletherisopropylbenzenemethyltert-butylethersec-butylbenzeneTotalxylenesm,p-xylenesnaphthalenen-butylbenzenen-PropylbenzeneC19-C36AliphaticsC9-C22AromaticsSemi-Volatile Organic Compounds (SVOCs) by EPA Method 625 (µg/L)naphthalene2-methylnaphthalenebis(2-ethylhexyl)phthalatedi-n-butylphthalateleadC5-C8AliphaticsC9-C18Aliphatics FIGURES APPENDI X I LIMITED HISTORICAL INFORMATION APPENDIX II LIMITED SITE ASSESSMENT RISK CLASSIFICATION AND LAND USE FORM 1 Appendix I Limited Site Assessment Risk Classification and Land Use Form Union Missionary Baptist Church 907 North Roxboro Street Durham, Durham County, North Carolina NCDENR INCIDENT NO. 19630 S&ME PROJECT NO. 1354-11-250 Part I – Groundwater/Surface water/Vapor Impacts High Risk 1.Has the discharge or release contaminated any water supply well including any used for non- drinking purposes?UNKNOWN The receptor survey did not indicate the presence of water supply wells in use within 1500’ of the subject site. The only identified water supply well within 1,000 feet is reportedly not in use. 2.Is a water supply well used for drinking water located within 1,000 feet of the source area the discharge or release?NO 3.Is a water supply well used for any purpose (e.g., irrigation, washing cars, industrial cooling water, filling swimming pools) located within 250 feet of the source area of the release or discharge?NO . 4.Does groundwater within 500 feet of the source area of the discharge or release have the potential for future use in that there is no other source of water supply other than the groundwater?NO 5.Do vapors from the discharge or 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?NO 6.Are there any other factors that would cause the discharge or release to pose an imminent danger to public health, public safety, or the environment?NO Intermediate Risk 1.Is a surface water body located within 500 feet of the source area of the discharge or release? NO 2 2.Is the source area of the discharge or release located within a designated wellhead protection area as defined in 42 USC 300h-7(e)?NO 3.Is the discharge or 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 4.Do the levels of groundwater contamination for any contaminant exceed the gross contamination levels established by the Department?NO Part II – Land Use Property Containing Source Area of Discharge or 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 The property is a parking lot associated with the Union Missionary Baptist Church across Roxboro Street. 2. Does the property contain a school, daycare center, hospital, playground, park, recreation area, church, nursing home, or other place of public assembly?NO 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 a paved parking lot. 4. Do children visit the property?YES Explain: Children may visit the site. 3 5. Is access to the property reliably restricted consistent with its use (e.g., by fences, security personnel, or both)?NO 6. Do pavement, buildings, or other structures cap the contaminated soil?YES Explain: The parking lot is covered with asphalt.______________________________________________ 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? Explain: 7. What is the zoning status of the property? According to the City of Durham website, the property is commercial-residential. 8. Is the use of the property likely to change in the next 20 years?NO Explain: The property is likely to remain a parking lot. Property Surrounding Source Area of Discharge or Release The questions below pertain to the area within 1,500 feet of the source area of the discharge or 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 residence is less than 100 feet from 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? A church and a school are within 250 feet of the site. ___________________________________ 3. What is the zoning status of properties in the surrounding area? According to the City of Durham website, the area is zoned commercial-residential. 4. Briefly characterize the use and activities of the land in the surrounding area: Land use in the adjacent properties is mixed residential and commercial.____________________ APPENDIX III PHOTOGRAPHIC LOG Union Missionary Baptist Church TF# 19630- Phase I LSA Durham, North Carolina S&ME Project No. 1354-11-250 Taken by: CEE Date Taken: 12/2/2011 1 1 Geoprobe® set up on MW-1. 2 Geoprobe® at MW-1. Note overhead powerline. 3 Advancing boring at MW-1. 4 Switching to air rotary drilling after auger refusal at 9 ft bgs. Union Missionary Baptist Church TF# 19630- Phase I LSA Durham, North Carolina S&ME Project No. 1354-11-250 Taken by: CEE Date Taken: 12/2/2011 2 5 Dust from consolidated material generated by air rotary drilling. 6 MW-1. 7 First water encountered at MW-1. 8 Drill rig operator with air supply hose. Union Missionary Baptist Church TF# 19630- Phase I LSA Durham, North Carolina S&ME Project No. 1354-11-250 Taken by: CEE Date Taken: 12/2/2011 3 9 Geoprobe® set up on MW-1. 10 Advancing air rotary after auger refusal at approximately 9 ft bgs. 11 MW-1 well casing inside hollow stem auger; auger was left in place over night to allow recharge. Looking northeast across North Roxboro Street. 12 Preparing to set well MW-2. Looking west. Union Missionary Baptist Church TF# 19630- Phase I LSA Durham, North Carolina S&ME Project No. 1354-11-250 Taken by: CEE Date Taken: 12/2/2011 4 13 Geoprobe® at MW-2. 14 Asphalt cutting at MW-3. 15 Preparing to drill MW-3. 16 Geoprobe® at MW-3 looking north across Dowd Street. Union Missionary Baptist Church TF# 19630- Phase I LSA Durham, North Carolina S&ME Project No. 1354-11-250 Taken by: CEE Date Taken: 12/2/2011 5 17 Core from MW-3 in acetate liner. 18 Geoprobe® at MW-3. Looking northwest across Dowd Street. 19 MW-3 looking northwest toward Dowd Street. 20 Looking southeast toward Roxboro Street. MW-2 is in the foreground, and MW-1 is in the background near the blue cooler. APPENDIX IV REQUEST FOR WATER SUPPLY WELL INFORMATION LETTER AND RESPONSES APPENDIX V WELL CONSTRUCTION RECORDS AND SOIL BORING LOGS APPENDIX VI LABORATORY ANALYTICAL RESULTS and CHAIN OF CUSTODY FORM Page 1 of 57 Page 2 of 57 Page 3 of 57 Page 4 of 57 Page 5 of 57 Page 6 of 57 Page 7 of 57 Page 8 of 57 Page 9 of 57 Page 10 of 57 Page 11 of 57 Page 12 of 57 Page 13 of 57 Page 14 of 57 Page 15 of 57 Page 16 of 57 Page 17 of 57 Page 18 of 57 Page 19 of 57 Page 20 of 57 Page 21 of 57 Page 22 of 57 Page 23 of 57 Page 24 of 57 Page 25 of 57 Page 26 of 57 Page 27 of 57 Page 28 of 57 Page 29 of 57 Page 30 of 57 Page 31 of 57 Page 32 of 57 Page 33 of 57 Page 34 of 57 Page 35 of 57 Page 36 of 57 Page 37 of 57 Page 38 of 57 Page 39 of 57 Page 40 of 57 Page 41 of 57 Page 42 of 57 Page 43 of 57 Page 44 of 57 Page 45 of 57 Page 46 of 57 Page 47 of 57 Page 48 of 57 Page 49 of 57 Page 50 of 57 Page 51 of 57 Page 52 of 57 Page 53 of 57 Page 54 of 57 Page 55 of 57 Page 56 of 57 Page 57 of 57 APPENDIX VII FIELD MEASUREMENT SHEET