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July 27, 2011 AEI Project No. 299162 Page 4 of 5 • Volatile Organic Compounds by EPA Method 8260 • Semi Volatile Organic Compounds by EPA Method 8270 • PCBs by EPA method 8082 Equipment Decontamination Sampling equipment used to sample, will be decontaminated between samples using a triple rinse system containing AlconoxTM or similar detergent. Rinse water will be contained in sealed labeled DOT approved 55-gallon drums in a secure location on-site pending proper disposal. Waste Storage Drill cuttings and other investigation-derived waste will be stored onsite in sealed 55-gallon drums, pending the results of sample analyses. Equipment rinse water will also be stored in 55- gallon drums. Upon receipt of analytical data, the removal and disposal of the waste to an appropriate disposal facility will be recommended. IV Site Safety Prior to commencement of field activities, a site safety meeting will be held at a designated command post near the working area. Emergency procedures will be outlined at this meeting, including an explanation of the hazards of the known or suspected chemicals of interest. All site personnel will be in Level D personal protection equipment, which is the anticipated maximum amount of protection needed. A working area will be established with barricades and warning tape to delineate the zone where hard hats and steel-toed shoes must be worn, and where unauthorized personnel will not be allowed. A site safety plan conforming to Part 1910.120 (i) (2) of 29 CFR will be on site at all times during the project (Attachment B). V Reporting The results of the work will be presented under separate cover. The report will include the methods, findings, and conclusions. The report will be provided to the EHD. The entire project will be overseen by and all reports will be reviewed and stamped by a State of California Professional Geologist or Professional Civil Engineer.