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' EEC#151452-1 UniFirst Stockto November 12 2003 To minimize continuing construction delays, EEC 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 hydrocarboaimpacted 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 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 The results of these samples are presented in Table 1 ' EEC discussed the progress of the investigation with Michael Infurna at SJCDEH on November 12, 2003, and then met with him on November 13, 2003 EEC agreed to submit this work plan for SJCDEH review based on the results of pending laboratory analyses, which have since been received and are reported in Table 1 Proposed Assessment and Remediation 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 SJCDEH • Excavate petroleum-impacted soil and soil with obvious hydiocarbon 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 confirmation 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 • Submit a final report to SJCDEH presenting the findings of the assessment and ' remediation activities Confirmation samples will be collected as follows ' • Notify the SJCDEH prior to collecting any confirmation samples, so that SJCDEH can be present for sampling, if necessary ' • All samples will be collected in brass 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 from the bottom and sides of the final excavation, as well as from the excavated soil 1