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� • s <br /> NOA Drywell Closure and Investigation Work Plan Page 10 of 16 <br /> ' March 18, 2014 <br /> Revised March 20, 2014 <br /> 4.5.2 Soil <br /> All soil samples collected from the drywells and the sediment/sludge sample collected from the <br /> Concrete Cure Room floor drain will each be analyzed for the following: <br /> • Volatile Organics by EPA Method 8260. <br /> • Semi-Volatile Organics by EPA Method 8270 <br /> RCRA Metals by EPA Method 6010 <br /> • Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015 <br /> Total Petroleum Hydrocarbons as Diesel by EPA Method 8015 <br /> • Total Recoverable Petroleum Hydrocarbons by EPA Method 8440 " <br /> One (1) soil sample from each drywell and one (1) sediment/sludge sample from the Concrete <br /> Cure Roam floor drain will additionally be analyzed for the following: �z <br /> • Toxicity Characteristic Leaching Procedure (TCLP) by EPA Method 1311 <br /> One (1) soil sample will be collected from a drywell will be split between two identical <br /> containers to fulfill the Replicate Samples Quality Control/Quality Assurance requirement (See <br /> Section 4.6). Both containers will be analyzed for the following: <br /> ' RCRA Metals by EPA Method 6010 <br /> All analyses will be provided by McCampbell Analytical in Pittsburg, California. <br /> 4.6 Quality Control and Quality Assurance (QC/QA) <br /> 4.6.1 Field OC/OA <br /> Field QC/QA will consist of the following: <br /> • Equipment Blanks <br /> tReplicate Samples <br /> One (1) Equipment Blank will be obtained during groundwater sampling and one (1) Equipment <br /> Blank will be obtained during soil sampling. Quality Control equipment blanks are used to assess <br /> the caliber of field decontamination procedures. After the sampling equipment has been <br /> decontaminated by the appropriate procedures, the certified organic-free water is poured into <br /> the sampling equipment and then into sampling containers. This water will then be analyzed in <br /> ' for RCRA Metals by EPA Method 6010 in the same manner as the waste fluid and soil samples. <br /> One (1) Replicate Sample will be obtained during groundwater sampling and one (1) Replicate <br /> t Sample will be collected during soil sampling. Replicate sampling is generally used to determine <br /> the consistency in sampling procedures and analytical methods. Samples will be obtained from <br /> a sampling point and split between two identical containers. Both containers will receive the <br /> same method of analysis at the laboratory: RCRA Metals by EPA 6010. <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02014 Neil O.Anderson&-Associates,Inc <br />