ARCHIVED REPORTS XR0000081 - Laserfiche WebLink

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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 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 -22 The decontamination sample `(labeled MW -12) was collected from a bailer which had been cleaned by the normal decontamination procedure after sampling MW -2 Deionized 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. Samples were sealed in a resealable plastic bag and placed with ice in an insulated chest for �i 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 benzene, toluene, ethylbenzene and xylene (BTEX) by EPA Method 8020 and for total petroleum hydrocarbons as gasoline (TPH-G) by EPA Method 8015-M (Table A-4) ' TABLE A-4 Sample Analysis Schedule Sample Identification Number Analyses Performed MW -1 BTEX, TPH-G MW -2 BTEX, TPH-G MW -3 BTEX, TPH-G MW -5 BTEX, TPH-G MW -6 BTEX, TPH-G MW -12 BTEX MW -22 BTEX 1 STK\RPrS\AREGIQ-rR WP A - 3 05117!91