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SCOPE OF WORK UTILITY CLEARANCE SURVEY Shaw will contract a private utility locating service to clear the borings that are planned to be completed during this investigation. Shaw will drill three borings as discussed below. LIMITED PHASE II SOIL AND GROUNDWATER SAMPLING Shaw will complete three borings during the assessment. Prior to the investigation, Shaw will complete a drilling permit(with associated fee) and develop and submit a work plan for approval as required by the San Joaquin County Environmental Health Department. Shaw will also contact Underground Service Alert (USA) to notify potential utility service providers to mark out their lines in the area of the proposed borings. Additionally, Shaw will also utilize the utility locating survey (discussed above) in the attempt to locate utility lines that may be present in the area of the proposed borings. Once the borings have been cleared of potential utility lines, Shaw will hand augur all of the borings to a depth of approximately five feet bgs as an extra precautionary measure. Following the hand auguring, Shaw will contract a drilling contractor to the complete the borings using a direct-push sampling rig. Shaw will drill to a maximum depth of 40 feet below grade or the first occurrence of groundwater, whichever is shallower. Soil samples will be collected at the five-foot intervals and will be retained in clean acetate liners. The collected soil samples will be then sealed with Teflon-lined plastic caps, labeled, and placed in a chilled ice chest. Grab groundwater samples will be collected from each boring location and will be retained in laboratory-supplied containers. The groundwater samples will also be labeled and placed in chilled ice chest. The hand auger equipment and direct-push sampling equipment will be decontaminated by steam cleaning between boreholes. After sampling is complete, the boreholes will be filled with cement. The upper 3-feet of the borings will be backfilled with bentonite chips. The small volume of soil generated and decontamination water generated during the investigation will be stored in separate 55-gallon drums. The drums will need to be stored on the subject property until laboratory characterization is complete on the soil and groundwater sampling. Costs for drum disposal are not included in this proposal and will be addressed separately at a future date. The collected soil and groundwater samples will be shipped to an analytical laboratory that is State of Califomia Certified. One soil sample from each boring and the three groundwater samples will be analyzed for Total Petroleum Hydrocarbons as gasoline (TPH-G) and Volatile Organic Compounds (VOCs) by EPA Methods 8015m and 8260b, respectively. Shaw will prepare a Phase II Environmental Site Assessment (ESA) report that will summarize the findings of the Phase II ESA. The report will include an Executive Summary; descriptions of field activities and procedures; laboratory analysis results; and conclusions and recommendations based on the Phase II ESA activities. The report will be signed by a State of California Professional Geologist. Shaw is pleased to present this workplan to you. If you have any questions, please contact me at 949-660- 5494. Sincerely, Shaw Environmental, Inc. \jc/,�! � Ramil G. Reyes, REA Project Manager 2