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To sample each well, a pre -cleaned teflon bailer was attached to new braided nylon line and lowered into the well, filled, and brought to the surface The water in the bailer was carefully poured into laboratory prepared glass and plastic bottles which were capped with Teflon -lined caps Sample bottles were labeled with stick -on labels filled out in indelible ink, with the following information Site name Date collected Time collected Sample ID Sampler's initials Analysis required Any other pertinent information Quality control/quality assurance procedures consisted of the collection of a blind duplicate and an equipment decontamination rinsate sample The duplicate was collected concurrently with sample MW -2 and was given the fictitious well/sample name MW -10 The decontamination sample (labeled MW -11) was collected from a bailer which had been cleaned by the normal decontamination procedure after sampling MW -2 Detonized water was poured into the decontaminated bailer and then the water was poured from the bailer into the sample bottles This sample serves as a check on the decontamination procedures for the bailer, ensuring that it has been effectively cleaned The teflon bailer used to purge the wells and collect the water samples was thoroughly decontaminated prior to each use to prevent cross -contamination of samples Decontamination of the bailer consisted of a dual wash with an alconox/potable water solution followed by a ' potable water rinse, and a final rinse with deionized water The thin nylon line used to lower the bailer was removed and discarded atter each use All purge water from the wells and decontainination rinsate was containerized onsite pending disposal through the Stockton Municipal Utilities Department Samples were sealed in a resealable plastic bag and placed with ice in an insulated chest for delivery with a Chain -of -Custody document to the WESTON Analytics' laboratory in Stockton, California The laboratory is certified by the State of California to perform the required analyses The samples were scheduled for analysis of parameters as shown on Table A-4 STh1RP'TSIAREC4QTR WP A - 3 01!24194