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i Soil Boring Work Plan The Property consists of a former restaurant and associated asphalt parking lot.The 7-Eleven real estate services department requested the assessment as part of a property transaction, to evaluate potential petroleum hydrocarbon impact to soil and groundwater from former and current operations conducted on adjacent properties to the east and southeast. 7-Eleven is planning to lease the property and install a new 7-Eleven convenience store with fuel dispensing facilities. As required by the Occupational Safety and Health Administration Standard"Hazardous Waste Operations and Emergency Response"guidelines(29 CFR 1910.120),and by California Occupational Safety and Health Administration"Hazardous Waste Operations and Emergency Response"guidelines (CCR Title 8, Section 5192), Stantec will prepare a Site-Specific Health and Safety Plan (HASP) prior to the commencement of all field work.The HASP will be reviewed by the field staff and contractors before beginning field operations at the site. Prior to conducting the proposed work, Stantec will obtain the appropriate soil boring permits from the San Joaquin County Environmental Health Department(SJCEHD). At least 48 hours prior to conducting subsurface work, Stantec will contact Underground Service Alert to delineate subsurface utilities near the proposed soil boring locations with surface markings. A private utility locator service will also be contracted to clear the areas surrounding the proposed soil boring locations. Five soil borings will be advanced to approximately 15 feet below ground surface(bgs). Drilling will be accomplished using a using a hand auger to 8 feet bgs and then a Geoprobe direct push drilling rig, equipped with two-inch diameter direct push probes to the final depth. Soil samples for chemical analysis and logging purposes will be collected at approximately 5-foot intervals Soil samples will be collected at approximately 5-foot intervals from the hand auger or a Geoprobe continuous core barrel lined with acetate sleeves. The sleeves that are selected for laboratory analysis will be removed from the sampler with as little disturbance as possible and contain little or no observable void space to minimize volatilization of any hydrocarbons that may be present. Each sleeve will be immediately sealed with Teflon'film and capped to avoid possible loss of volatiles. All soil samples collected will be field screened for volatile organic compounds(VOCs)using a photo- ionization detector(PID). Soil used for field screening will not be used for laboratory analyses. Soil samples will be described and classified at the time of collection in accordance with the Unified Soil Classification System and the ASTM Method D2488. Following soil sample collection, a temporary casing will be set in each borehole to facilitate collection of a grab groundwater sample. Collected water samples will be discharged directly into the appropriate sampling containers. The samples will be labeled with the sample number,collection date, time, and type of preservative. The groundwater samples will be placed in a cooler with ice and recorded using chain-of- custody(COC) protocols. Following the completion of soil and groundwater sampling activities,the borings will be backfilled with a cement grout from the bottom of the boring upward to approximately one-foot bgs.The top foot of the boring will be completed with concrete to match the existing site surface. Each soil and groundwater sample will be analyzed for total petroleum hydrocarbons-gasoline range organics(TPH-GRO), benzene,toluene,ethylbenzene,total xylenes (collectively known as BTEX), tertiary amyl methyl ether(TAME), t-butyl alcohol (TBA), diisopropyl ether(DIPE), ethyl-tert butyl ether (ETBE), methyl-tert butyl ether(MTBE),and full scan volatile organic compounds(VOCs) using EPA Method 8260B. Samples will also be analyzed for TPH-diesel range organics (TPH-DRO)and TPH-oil range organics(TPH-ORO) using EPA Method 801156.