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Sampline Procedure and Analysis Schedule ' Five monitoring wells were sampled Monitonng wells MW-2 and MW-3 were checked for sampling but were dry The sampling order was as follows ' 1 MW-5 2 MW-4 3 MW-6 ' 4 MW-8 5 MW-7 ' To sample each well, a teflon bailer was attached to new thin braided nylon line and lowered into the well by hand The bailer was filled, and brought to the surface The water in the bailer was carefully poured into laboratory prepared glass and plastic bottles and capped with teflon ' lined caps Samples were labeled with stick-on labels filled out in indelible ink, with the following information ' Site name Date collected ' Time collected Sample I D Sampler's initials Analysis required Quality control/quality assurance procedures consisted of the collection of a blind duplicate, an ' equipment decontamination nnsate sample and two trip blanks The duplicate was collected concurrently with sample MW-5 and was given the fictitious well/sample name MW-10 The equipment decontamination samples (labeled MW-11 and MW-12, collected on the first and ' second sampling day, respectively) were collected from a bailer which had been cleaned by the normal decontamination procedure Distilled water was poured into the decontaminated bailer and then the water was poured from the bailer into the sample bottles This sample acts as a ' check on the decontamination of the bailer, ensuring that it has been effectively cleaned A laboratory prepared trip blank accompanied the samples in the sample cooler on each day ' Samples were placed with ice in an insulated chest for delivery with a Chain-of-Custody document to the WESTON Analytics' laboratory in Stockton, California This laboratory is ' certified by the State of California to perform the required analyses Samples were submitted for analysis of BTEX, TPH-G, TPH-D, EDB, and total lead The equipment decontamination samples and the trip blanks were analyzed only for BTEX (Table A-4) A copy of the Chain-of- Custody hain-ofCustody document is included with the Analytical Report presented in Appendix B Decontamination and Health and Safety Procedures All devices used to purge the wells and collect the water samples (including bailers, pumps, purge lines, etc ) were decontaminated prior to first use and between uses for each sampling The new thin nylon line used to lower the bailer into the well was disposed of after each use and not reused The pump that was used to purge the wells was decontaminated by inserting it into ' 1IM/Sic WP A - 16 MUM