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Once a sample is collected, it will be stored in a field ice chest. Each sample will be catalogued on appropriate Chain -of -Custody documentation after it has been collected, and the Chain -of -Custody records and other appropriate paperwork will accompany each sample to the analytical laboratory. It is anticipated that samples will be provided to the laboratory courier at the end of each sampling day, and the field sampler will be responsible for the care and custody of the samples until they are shipped or otherwise delivered to the laboratory custodian. Samples from temporary wells and all blank samples will be analyzed for VOCs according to United States Environmental Protection Agency (US EPA) test method 8260B. Samples from water level sounder. The depth to water will then be used to calculate the water surface elevations in the wells by subtracting the depth -to -water from the estimated top -of -casing elevation. To evaluate groundwater flow directions and hydraulic gradients beneath the site, groundwater depths will be measured in all shallow, perched monitoring wells on the same day. Well purging will be accomplished by bailing with a new, disposable bailer attached to Teflon® rope. Periodically, samples of purged water will be collected and monitored for stabilization indicator parameters (pH, temperature, electric conductivity, and turbidity). The well will be sampled after a minimum of three well casing volumes have been purged, and the indicator parameters have stabilized to within 10 percent of the preceding three measurements and show no discernible upward or downward trend. As described elsewhere, water that is purged from each well will be temporarily contained and stored in 55 -gallon drums, and then discharged to the ground surface in a manner that does not cause erosion or runoff to other properties. Laboratory analyses will be conducted by BC Laboratories, Inc., of Bakersfield, California, a State of California ELAP-certified laboratory. BC Labs will provide the sample containers, which will be stored in an area that is free from dust and exposure to organic chemicals. All ground water samples will be poured from the bailer by inserting a disposable bottom - emptying device to transfer the liquid from the bailer directly into the sample containers. Trip blanks for each day of sampling will accompany sample containers from the laboratory, through the field operations, and return to the laboratory as a QC check to determine if contamination has been introduced from the sample containers or laboratory water. Field blanks will be collected by pouring laboratory provided reagent -grade water directly into a set of sample vials as a test of site-specific environmental conditions. Field blanks will be collected at a frequency of one per day. Once a sample is collected, it will be stored in a field ice chest. Each sample will be catalogued on appropriate Chain -of -Custody documentation after it has been collected, and the Chain -of -Custody records and other appropriate paperwork will accompany each sample to the analytical laboratory. It is anticipated that samples will be provided to the laboratory courier at the end of each sampling day, and the field sampler will be responsible for the care and custody of the samples until they are shipped or otherwise delivered to the laboratory custodian. Samples from temporary wells and all blank samples will be analyzed for VOCs according to United States Environmental Protection Agency (US EPA) test method 8260B. Samples from permanent monitoring wells will be analyzed for additional routine monitoring parameters that include: 12 2011-0115 CHSL EMP Workplan Geo -Logic Associates Revision 1- August 24, 2011