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for volatile compounds using an Organic Vapor Meter (OVM) The soil <br /> . was screened by emptying soil from one of the sample tubes into a plastic <br /> bag The bag was then sealed and placed in the sun for approximately 10 <br /> minutes After the VOCs were allowed to volatilize, the OVM measured <br /> the vapor in the bag through a small hole punched in the bag OVM <br /> readings are used as a screening tool only, since the procedures are not <br /> as rigorous as those used in the laboratory OVM readings are noted on <br /> the boring logs presented in Appendix E <br /> 5 .3 Groundwater , Sample Collection <br /> A temporary PVC well casing was driven into place in each boring for t h e <br /> collection of groundwater samples Groundwater samples were removed <br /> from the boring with a pre-cleaned bailer The groundwater samples <br /> were contained in 40-m1 VOA vials, preserved with hydrochloric acid, a n d <br /> sealed without headspace The samples were then labeled, placed in <br /> protective foam sleeves, and stored on ice for transport to Kiff Analytical, <br /> LLC under chain of custody <br /> 54 decontamination and—Disposal of Steam-Cleaning Rinsate <br /> • Drilling equipment was steam-cleaned prior to use, and sampling <br /> equipment was washed with a TSP solution between sampling intervals to <br /> prevent cross-contamination Rinsate was processed through the on-site <br /> water treatment system <br /> 5 .5 Backfilling of Borings <br /> At the completion of the drilling, the borings were backfilled with neat <br /> cement using a tremae pipe <br /> 6 . 0 MONITORING WELL SAMPLING <br /> 6. 1 Moinitoring Well &-unpluig <br /> On February 9, 2001, ASE associate geologist Erik Paddleford collected <br /> groundwater samples from the monitoring wells on the north shoulder of <br /> West Yosemite Avenue, across the street from the site Prior to sampling, <br /> the wells were purged of four well casing volumes of groundwater using <br /> dedicated bailers The pH, temperature and conductivity of the purge <br /> water were monitored during evacuation, and samples were not collected <br /> until these parameters stabilized Samples were collected from the wells <br /> using pre-cleaned dedicated polyethylene bailers The groundwater <br /> Franks One Stop Report — March 2001 <br /> -13- <br />