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Project No. 014-13157 Page No. 4 locations of the composite sample, Krazan will excavate an area approximately 50 feet long by seven (7) feet wide by two (2) feet deep. PID field screening will be conducted to evaluate excavated soil for the presence/absence of constituents of concern (COCs) during removal and sample collection. The excavated soil will be placed in a bin(s) or drums and a soil profile will be completed to characterize the soil for disposal. Six (6) soil samples will be collected from the bottom and side walls of the excavation to confirm that the hydrocarbon-impacted soil has been removed. The soil samples will be analyzed for TPH-d and TPH-mo by EPA Method 8015C. One (1) composite soil sample will be collected from the bins/drums to characterize the soil for disposal. The sample will be analyzed for TPH-cc and CAM 17 metals by EPA Method 6010B and 7471A. Soil samples will be collected in stainless steel sleeves and will be immediately placed in an iced chest. The soil samples will be labeled and identified on a chain of custody. The soil samples will be transferred to an analytical laboratory under chain of custody protocol. Industry standard methods and protocols for sample collection, sampling equipment decontamination, sample storage, transport, hold times, chain-of-custody, etc. will be implemented. The excavation will be backfilled with clean soil and compacted to a minimum of 90 percent of relative density. After completing the field and laboratory work, a report will be prepared which will include field methodologies, tabulated analytical results, supporting documentation, and our findings, conclusions and recommendations. The report will be reviewed and signed by a California Professional Geologist. SCHEDULE Once this workplan is approved by the client, Krazan will schedule and begin the field activities within approximately five (5) business days. Permitting is expected to require 10 business days to complete and the geotechnical investigation is expected to take another 15 business days to complete. We anticipate that the excavation activities including completion of the confirmation soil sampling activities would be completed within two (2) days. Laboratory turnaround time will be seven days (7). We further anticipate that a final report detailing the results of the excavation will be completed within 10 business days following receipt of the final laboratory data. Thus, the final report should be available approximately 35 to 40 business days following approval of the workplan by the client, unless the need to obtain the boring and/or excavation permit extends the schedule. KRAZAN & ASSOCIATES, INC. With Offices Serving the Western United States 014-13157 2014-3-28 WP for Excavation_Wilson Way Stockton FINAL