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• 0 ATTACHMENT 1: TECHNICAL PROPOSAL 23 May 2014 • Containerize impacted soil in drums provided by the CSMS. Stage the drums in the area designated by the CSMS shop supervisor (Ryan Kinney) or his onsite representative, after all soil excavation is complete, and soil-filled drums are sealed. • Stage drums on site at the CSMS pending disposal as "Non-Hazardous Waste - Analysis Pending". ECM has included separate costs for soil sampling for waste characterization. • Procure and deliver up to two cubic yards of soil backfill material to fill in and restore the excavated area to grade. ECM will compact the backfill soil by wheel rolling with the backhoe and has not included costs for compaction testing. • Prepare a brief report for CA ARNG summarizing the clean-up activities, to serve as a record of the fuel spill clean-up. ECM has included time for 1 round of comments from the CA ARNG. • ECM will produce and distribute copies of the draft report electronically. • ECM will produce and distribute 2 hard copies of the final report. Option 1 — Soil Disposal Sampling At the discretion of the CA ARNG, ECM will obtain 4 samples from the 9 existing onsite drums and the additional drums and send them to a California-certified laboratory for the analyses to support waste characterization. ECM has priced these analyses for a 5 day turnaround: • TPH-Jet (EPA 8015), • Cam 17 Metals, and • SVOC (EPA 8270). Option 2 —Additional Field Day At the discretion of the CA ARNG, ECM has included costs for an additional field day should CA ARNG determine the need for soil confirmation sampling from the bottom of the excavation. This would allow for the excavation to remain open until confirmation sample results are received. ECM would then return to the site and backfill once or excavate additional soil and resample. This cost is inclusive of labor and equipment. The base scope already includes the back fill soil. Option 3 — Soil Excavation Sampling At the discretion of the CA ARNG, ECM will obtain one (1) bottom-of-excavation composite sample to confirm the vertical extent of the excavation and confirm that all contaminated soil has been removed. ECM will use the PID to field screen soils once excavation extents are identified with the inspector. Field screening will be performed by obtained a small soil sample from the Page 12