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.1 <br /> TRACY"IP_TASK I/TOS MONITORING WELL INSTALIA11C1N WORK RAN <br /> Sample Handling and Custody Procedures <br /> Custody Procedures <br /> Samples will be packaged and shipped under standard chain of custody procedures. <br /> Possession of the samples will be documented from the time they are collected until the time <br /> they arrive at the contracted laboratory. The chain-of-custody record will record sample <br /> possession and transfer as well as: <br /> • Samples in the cooler <br /> • Sample designations <br /> • Date and time of sample collection <br /> • Analyses to be performed <br /> • Time,date,and signatures of each person transferring custody enroute to the laboratory <br /> Laboratory <br /> Samples will be analyzed at a State of California certified offsite laboratory.Laboratory <br /> quality assurance/quality control(QA/QC)procedures for analyzing these water samples <br /> will be performed in accordance with the laboratory Quality Assurance Plan. <br /> Quality Assurance/Quality Control <br /> To provide QA/QC for the field process,field notes,adherence to this Sampling and <br /> Analysis Plan,and chain-of-custody records will be maintained. In addition,one duplicate <br /> sample will be collected from one of the downgradient monitoring wells. This sample will <br /> be given a unique identifier that will be noted in the field records. <br /> References <br /> ASTM standards D2488 Standard Practice for Description and Identification of Soils(Visual <br /> Manual method) (1984) American Society for Testing and Materials <br /> ASTM standards D6286 Standard Guide for Selection of Drilling Methods for <br /> Environmental Site Characterization(1998) American Society for Testing and Materials. <br /> Central Valley Regional Water Quality Control Board(CVRWQCB). 2007. Order No.R5- <br /> 2007-0036,NPDES NO.CA0079154,Waste Discharge Requirements For City Of Tracy Tracy <br /> Wastewater Treatment Plant,San Joaquin County <br /> CH2M HILL. 2005.Evaluation of the Tracy W WTP in Response to RWQCB Letter Dated <br /> June 15,2004. Prepared for the City of Tracy. April. <br /> CH2M HILL. 1995. City of Tracy Wastewater Treatment Plant Holding Ponds Ivestigation. <br /> Prepared for the City of Tracy. June. <br /> GEI.2007. Tracy Regional Groundwater Management Plan. Prepared for City of Tracy. <br /> March. <br /> 0d*V 71,2007 9 <br />