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Limited Phase II Environmental Site Assessment January 11,2007 Page 3 Soil Investigation SECOR proposes to drill one soil boring to a maximum depth of 25 feet bgs. Soil samples will be collected at 5 foot depth intervals to the total depth explored. Soil samples for chemical analysis will be collected in stainless steep or brass liners, capped and labeled, and then placed in a cooler on ice for preservation. Soil samples collected for chemical analysis will be submitted to American Scientific Laboratory in Los Angeles, California, a State licensed laboratory. Drilling and soil sampling equipment will be cleaned prior to and after drilling activities. Upon completion of the drilling, the soil boring will be backfilled with bentonite grout from the bottom of the boring to the ground surface. Standard operating procedures are provided in Attachment B. Laboratory Analysis SECOR proposes to analyze the 10, 15, 20 and 25 foot interval soil samples since the sump is located at an approximate depth of 8 to 10 feet below the surrounding surface grade of the site. Collected soil samples will be analyzed for total petroleum hydrocarbons as gasoline (TPHg), TPH as diesel (TPHd), and TPH as motor oil (TPHmo) using EPA Test Method 8015M (modified); and for volatile organic compounds (full scan) including oxygenate compounds (MTBE, TAME, ETBE, DIPE, TBA and ethanol) using EPA Test Method 8260B. Waste Disposal Generated soil and decontamination water will be contained in properly labeled, Department of Transportation approved open head 55-gallon drums with locking covers, and stored on site. Samples of drummed materials may be collected and analyzed for waste characterization purposes, if necessary. After receipt of any analytical results, the drums will be transported off- site by Belshire Environmental Services, Inc. The disposal site for the drums will be determined based on laboratory results. Waste disposal documents will be provided with the site investigation report. Report Preparation SECOR will prepare a technical report documenting the results of the Limited Phase II ESA. The report will include complete description of the field assessment (drilling and sampling techniques), scaled site figures, a summary data table, laboratory analytical and QA/QC report, assessment findings, conclusions, and recommendations. Work Schedule Since the proposed scope of work is part of a property due diligence and potential property transfer, on behalf of RMRG, SECOR respectfully requests that the SJCEHD review and approve this work plan as quickly as possible. Upon approval, SECOR will immediately schedule the field activities. SECOR anticipates that a single day is required to complete the field work portion of the assessment, with a report detailing the results of the investigation issued within two to three weeks after completion of the field work and receipt of all final certified laboratory analytical reports. P:/CEC/Stockton/Stockton Limited Phase ll ESA Work Plan DRAFT 01.10.07 SECOR