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1 <br /> 16 2 2 2 Well Development, Purging and Sampling <br />' On July 9, 1996, CAPE personnel supervised Mitchell Drilling in the development of the <br /> groundwater monitoring well The purpose of well development is to consolidate the sand <br /> filter pack around the screened interval of the casing and to remove silty sediments from <br />' within the well water The well was surged with a vented surge block for approximately ten <br /> minutes and then purged of approximately thirty five gallons Temperature, pH, and <br /> conductivity measurements were recorded during the purging activities The groundwater <br /> monitoring well was allowed to equilibrate overnight prior to sampling Refer to Appendix C <br /> - Well Development Logs for additional information <br />' On July 10 and October 8, 1996, CAPE measured the depth to ground water, purged the well <br /> of approximately four (4) well volumes, and collected ground water samples The depth to <br /> ground water and other development and sampling details are provided in Appendix C and <br /> Appendix D Water samples were collected with dedicated disposal 2-inch diameter PVC <br /> hand bailers and placed in 40 milliliter (ml) glass and 1 liter amber glass containers, labeled, <br />' preserved at 4° Celsius, and transferred to the laboratory under Chain-of-Custody <br /> documentation <br />' 2 2 3 Sample Preparations and Handling <br /> All groundwater samples, following collection, were secured in laboratory supplied vessels <br /> fitted with threaded Teflon-lined caps containing the appropriate preservative Sample vessels <br /> were immediately placed in a pre-cooled ice chest and delivered to the analytical laboratory <br /> within approximately 1 hour after collection Samples were submitted for a 5-day turn-around <br />' analytical testing schedule <br />' 2 2 4 Laboratory Testing <br /> Chemical analysis of the groundwater samples from MW-1 included the following suite of <br />' parameters <br /> - Total Petroleum Hydrocarbons (TPH) using DHSILUFT procedure EPA Test Method <br />' 8015-Modified (diesel and het fuels, crude, hydraulic and waste oils, and stoddard <br /> solvent), <br /> - Total Volatile Hydrocarbons (TVH) using DHSILUFT procedure EPA Test Method <br /> 8015-Modified (gasoline), and <br />' - Benzene, Ethylbenzene, Toluene, and Xylene (BTEX), and Methyl tert-Butyl Ether <br /> (MTBE), using EPA Test Method 8020 <br /> 5 <br />