Laserfiche WebLink
S ECOR " <br /> 7-Eleven Store#20632 <br /> Offsite Assessment Work Plan <br /> June 18, 2004 <br /> Page 3 <br /> Soil generated through drilling will be placed in Department-of-Transportation (DOT) approved 55- <br /> gallon drums on site pending characterization and disposal. Water generated by steam cleaning will <br /> be contained in a steam-clean trailer and temporarily stored on site in DOT approved 55-gallon <br /> drums. <br /> Soil samples collected will be sealed with Teflon sheets and plastic caps, then labeled and placed on I� <br /> ice in an insulated container for delivery to Kiff Analytical located in Davis, California. As shown in <br /> Table 3, selected soil samples will be analyzed for benzene, toluene, ethylbenzene and xylenes <br /> (BTEX), TPHg, and fuel oxygenates MtBE, tert-butyl alcohol (TBA), ethyl-tert-butyl ether(EtBE), tert- <br /> amyl-methyl ether (TAME), and diisopropyl ether (DIPE) using Environmental Protection Agency <br /> (EPA) Method 8260B. <br /> Groundwater Sampling and Analysis <br /> Grab groundwater samples will be collected from each boring using a slim hole disposable bailer to <br /> transfer groundwater to laboratory-cleaned sample containers, sealed with Teflon°-lined caps, and <br /> transferred to cooled storage. Based on the depth to water measurements in onsite well MW-7, <br /> groundwater is expected to be encountered between 7 and 8 feet bgs. In the event that groundwater <br /> is not encountered before reaching the final depth of the borings (approximately 8 feet bgs), the <br /> borings will be advanced an additional 2 feet, to 10 feet bgs, to allow the collection of groundwater <br /> samples. <br /> Groundwater samples will be submitted to Kiff Analytical, a California-certified laboratory,for analysis <br /> of BTEX, TPHg, MtBE, TAME, EtBE, TBA, and DIPE by EPA Method 8260B. <br /> WASTE HANDLING AND STORAGE <br /> During drilling operations, sampling tools, and down hole equipment will be steam cleaned prior to <br /> use. Rinsate water, purge water and soil cuttings generated during the drilling and groundwater <br /> sampling will be stored in 55-gallon drums at the site pending laboratory analysis for proper disposal. <br /> REPORTING AND SCHEDULE <br /> SECOR will prepare a report summarizing the fieldwork completed and data collected including: <br /> • Details of field procedures and operations; <br /> • Boring logs; <br /> • Soil and groundwater analytical data; <br /> • Updated map showing the location of borings; and, <br /> • Maps and tables summarizing the results. <br /> SECOR can perform the proposed work and submit the assessment report approximately eight <br /> weeks after SJCEHD approval of this work plan. <br /> 20632 Offsite Assessment.doc SECOR International Incorporated <br />