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1 <br /> Samphn Procedure and Analysis Schedule <br /> Five monitoring wells were sampled The sampling order was as follows <br /> 1 MW-6 <br />' 2 MW-5 <br /> 3 MW-7 <br /> 4 MW-4 <br />' S MW-8 <br /> To sample each well, a teflon bailer was attached to new nylon line and lowered into the well <br />' by hand The bailer was filled, brought to the surface and the water was carefully poured into <br /> laboratory prepared glass and plastic bottles and capped with teflon- lined caps Samples were <br /> labeled with stick-on labels filled out in indelible ink, with the following information. <br /> 1 <br /> Site name <br />' Date collected <br /> Time collected <br /> Sample ID <br />' Sampler's initials <br /> Analysis required <br /> Quality control/quality assurance procedures consisted of the collection of a blind duplicate and <br /> an equipment decontamination ansate sample The duplicate was collected concurrently with <br /> Sample MW-4 and was given the fictitious well/sample name MW-10 The decontamination <br /> sample (labeled MW-11) was collected from a bailer which had been cleaned by the normal <br /> decontamination procedure De-ionized water was poured into the decontaminated bailer and <br /> then the water was poured from the bailer into the sample bottles This sample serves as a <br />' check on the decontamination procedures for the bailer, ensuring that it has been effectively <br /> cleaned <br />' Samples were placed with ice in an insulated chest for delivery with a chain-of-custody document <br /> to the WESTON Analytics' laboratory in Stockton, California This laboratory is certified by <br /> the State of California to perform the required analyses Samples were submitted for analysis <br />' by EPA Method 8015 (Modified) for total petroleum hydrocarbons as gasoline (TPH-G), EPA <br /> Method 8015 (Modified) for total petroleum hydrocarbons as diesel (TPH-D), EPA Method 7421 <br /> for total lead, EPA Method 8020 for benzene, toluene, ethylbenzene and xylenes (BTEX) and <br />' EPA Method 504 for ethylene dibromide (EDB) The equipment decontamination sample and <br /> the duplicate scheduled for analysis of only TPH-G <br /> Decontamination and Health and Safety Procedures <br /> All devices used to purge the wells and collect the water samples (balers, etc ) were <br /> decontaminated prior to the second use and between used for each sampling The bailers were <br /> decontaminated by washing it in an alconox-water mixture with a stiff bristle brush, rinsing it <br /> with potable water and giving it a final spray rinse with distilled water The new, Polyethylene <br />' rope and thin nylon line used to lower the bailer into the well was disposed of after each use <br />' M\RVrs\Mc 2ND wr A - 3 OWMM <br />