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March 30, 2022 <br />Work Plan 0870.W1 <br /> <br /> <br />Page 3 of 3 <br /> P&D ENVIRONMENTAL, INC. <br />Investigation-Derived Waste Disposal <br /> <br />All soil and water generated during subsurface investigation activities will be stored onsite <br />in a 55-gallon labeled drums pending characterization and proper disposal. <br /> <br />Sample Analysis <br /> <br />All four of the soil samples collected for laboratory analysis will be composited prior to <br />analysis at McCampbell Analytical, Inc. (McCampbell) in Pittsburg, California and <br />analyzed for the following: <br /> <br /> Total Petroleum Hydrocarbons as Gasoline (TPH-G), Total Petroleum <br />Hydrocarbons as Diesel (TPH-D) and Total Petroleum Hydrocarbons as Motor <br />Oil (TPH-MO) using EPA Methods 5030B/8021B/3510C in conjunction with <br />EPA Method 8015B. <br /> Full suite Volatile Organic Compounds (VOCs) including BTEX, naphthalene, <br />fuel oxygenates including MTBE, lead scavengers (including cis-1,2-DCA) and <br />HVOCs using EPA Method 5030B in conjunction with EPA Method 8260B. <br /> Semi-Volatile Organic Compounds (SVOCs) using EPA Method 8270C with <br />cleanup. <br /> Organochlorine Pesticides and Polychlorinated Biphenyls (PCBs) with <br />cleanup. <br /> CAM 17 Metals using EPA Method 6020. <br /> <br />Report Preparation <br /> <br />Upon receipt of the laboratory analytical results, a short letter report describing the sample <br />collection methods and including boring logs, the lab reports, and the stamp of a properly <br />licensed professional will be prepared. <br /> <br />Should you have any questions, please do not hesitate to contact us at (510) 658-6916. <br /> <br />Sincerely, <br /> <br />P&D Environmental, Inc. <br /> <br /> <br /> <br />Paul H. King <br />Professional Geologist #5901 <br />Expires: 12/31/23 <br /> <br />Attachments: Figure 1 - Aerial Photograph Showing Proposed Drilling Location <br /> <br />PHK/ sjc / 0870.W1