ARCHIVED REPORTS_XR0012721 - Laserfiche WebLink

Home Browse Search

T_ 3,:r _ sr� r•m SG D Color Spot, Inc. Cl February 14, 1990 (881680 rr- APPENDIX C i,, SAMPLING AND ANALYTICAL PROTOCOLS i k r. GROUND WATER SAMPLING Four existing domestic ground water wells were sampled by purging the E ! sample cock for two to three minutes and completely filling the sample container with water, to ensure no headspace in the container to prevent volatilization of s the sample. The. samples from each well were collected in two 40-m1 VOA vials and a l: liter amber glass bottle. The VOA vials were preserved with sodium azide or sodium hydrogen sulfate and were used for analyses of organic contaminants. The I liter amber glass bottles were preserved with nitric acid and were used for b �-j analyses for total lead. Immediately after the samples were collected, the containers were sealed,. without headspace, labeled, taped shut, secured in guard bottles (VOA vials), and vlaced in an ice chest containing artificial ice for preservation. :.� Chain-of-custody documentation accompanied the ground water samples. from A i"'� collection until delivery to Coast to Coast Analytical Services (CCAS) in Goleta, California. SOIL SAMPLING t Six confirmatory soil samples were collected from the calls and base of the resulting excavations following the completion of the soils removal # program. Each samples was collected in 3-inch long, 2.5-inch diameter, stainless steel sampling sleeves. Following the collection of each sample, both ends of the sleeve were sealed with Teflon sheets and airtight plastic caps, taped, labeled, and placed in a cE-oler artificially cooled for preservation. All �M ; ! samples were delivered to CCAS accompanied by chain-of-custody documentation. After the samples was obtained, additional soil was collected from i the sampler and monitored for organic vapors using a photoionization detector (PID). A stainless steel sample sleeve with plastic end caps was filled ` - - ---- approximately-one-third--full-with-soil--from-the-sampler-and-shaken with-the-end----- --r: -- cap covered to liberate soil vapors into the void space. The soil vapor was then iyI measured for volatile hydrocarbon compounds by inserting the PID probe into a hole in the end cap. The sample sleeve and two end caps were cleaned between ' each use with a nonphosphate detergent solution and rinsed with potable water, ! and air dried to prevent cross-contamination. kk1 l r�y 4 }- ., j