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GE' AW� <br /> GENESIS ENGINEERING&REDEVELOPMENT <br /> Sample coolers will be sealed in the field with the completed Chain-of-Custody document <br /> inside the cooler and the express shippers(e.g., Federal Express) shipment forms filled out in <br /> the field and attached to the cooler at that time. The Chain-of-Custody record will have the <br /> signature of the relinquishing field geologist and the shipper's form document tracking <br /> number written on the comment line. <br /> The completed Chain-of-Custody form will be placed in a plastic bag and taped to the <br /> underside of the cooler lid. The cooler will be tightly bound with filament tape. Custody <br /> seals will be signed by the individual relinquishing custody and affixed in such a way that the <br /> cooler cannot be opened without breaking the seals. <br /> 3.5 Quality Control Samples <br /> Quality Control samples are collected and analyzed for the purpose of assessing the quality <br /> of the sampling effort and the analytical data. Quality Control samples include trip blanks, <br /> equipment blanks, and field duplicates. The type, description,preparation and collection, <br /> and frequency of Quality Control samples are described below. <br /> 3.5.1 Duplicate Samples <br /> A duplicate sample is a single soil sample divided into two equal parts or two groundwater <br /> samples collected independently at a single sampling location. Field duplicates will be <br /> identified so that laboratory personnel are unable to distinguish them from field samples. <br /> Duplicate samples will be collected at a frequency of 1 per every 10 or fewer(10%) field <br /> samples per matrix; with a minimum of one duplicate sample collected per sampling day. <br /> Duplicate samples are to be analyzed utilizing the same types of analyses as their associated <br /> field samples. <br /> 4.0 FIELD QUALITY CONTROL PROGRAM <br /> Field quality control will be provided through strict adherence to sampling protocol and <br /> decontamination procedures. <br /> 4.1 Control Parameters <br /> Control parameters of the field procedures consist of the same controls that govern analytical <br /> data. These parameters are controlled through the assessment of data by precision, accuracy, <br /> representativeness, and completeness. Control parameters consist of the following: <br /> • Decontamination of field equipment <br /> • Strict adherence to sampling protocol <br /> Ripon Farm Services,Inc. 13 of 15 <br /> Sampling and Analysis Plan <br /> July 2009 <br />