COMPLIANCE INFO_FILE 1 - Laserfiche WebLink

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11/14/2003 14:53 E.E.C 4 12094683433 N0.691 PO4 NovambvLl UO3 Ta? NSl 1 i itst Stockton To minimize continuing conscniction delays, ETC subcontracted JET Drilling on a rush basis to mobilize to the site to advance nine shallow direct push borings. The purpose of the drilling activities was to determine the lateral and vertical extent of hydrocarborrimpacted soil at the site, The total depth of the soil borings ranged from five to twenty feet bgs. Soil samples were collected at five foot intervals and field screened with a Photo Ionization Detector (PID) to determine concentrations of volatile organic compounds in each sample. Samples were then labeled with the date, time sampled, project name, and unique sample identification number. age for transport to a State of California laboratory certified to Samples were placed on iced stor roper Chain of Custody protocol. The results of these perform the requested analysis, utilizing p samples are presented in Table I. EEC discussed the progress of the investigation with Michael Infuma at SJCDElJ on November 12, 2003, and then met with him on November 13, 2003. EEC agreed to submit this work plan for SJCDEM review based on the results of pending; laboratory analyses, which have since been received and are reported in Table 1, Proposed Assessment and Remed.lation Strategy Based on the findings on the initial sampling data, EEC is proposing to conduct the following scope of work,on a fast track basis. Prepare and implement a site specific Health and Safety Plan. • Obtain approval of this workplan by the SJCDEII • Excavate petroleum-impacted soil and soil with obvious hydrocarbon odor to minimize potential health and safety concerns associated with construction occurring in the area. Segregate soil in the field utilizing field observations and PID. • When excavation limits have been reached, EEC will collect conflrmation soil samples. At a minimum, these samples will be collected per the direction of the SJCDEH. Because the configuration and final excavation limits are not known at this time, EEC can only provide general guidelines by which confirmation testing will be conducted. I s Submit a final report to SJCDEH presenting the findings of the assessment and remediation activities. Confirmation samples will be collected as Follows: • Notify the SJCDEF prior to collecting any confirmation samples, so that SJCDER can be Present for sampling, if necessary, I1I • All samples will be collected in brt ss sleeves or laboratory grade sample jars. Samples will be labeled with the date, time sampled, project name, and unique sample identification number. samples were placed on iced storage for transport to a State of California laboratory certified to perform the requested analysis,utilizing proper Chain of Custody protocol. Sample locations — Samples will be collected fTom the bottom and sides of the final excavation, as well as from the excavated soil.