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r ]� Monitoring Well Installation Report Speedy Mart,8200 N Highway 99 Page 3 of 8 results are summarized in Tables 2 through 5 PROCEDURES Permitting Prior to initiating fieldwork, well installation permits were obtained from PHS/EHD All field work was performed in accordance with the Ground Zero's Site Safety Plan and Quality Assurance/Quality Control Plan Drilling and Soil Sampling On October 4, 1999 through October 8, 1999 Ground Zero supervised Spectrum Exploration (C57 512268) during the advancement of six soil borings SB4, SB5 and MW 1 through MW4 Boring/well locations are presented on Figure 3 A pilot hole for well MW1, advanced in the vicinity of previously sampled bonngs CPT1 and SBI, was sampled continuously from approximately 70 to 94 feet below ground surface(bgs)to characterize the stratigraphy of the site below the water table, which was initially encountered at a depth of approximately 64 feet bgs Soil samples were collected at 5-foot intervals from the ground �} surface to total depth in borings S134, MW2, and MW3 In borings SB5 and MW4, soil samples were collected generally at 10-foot intervals from the ground surface to approximately 50 feet bgs and at 5-foot intervals from 50 feet bgs to total depth Soil samples were collected using an 18- inch long core sampler lined with new 2-inch diameter brass sleeves Soil samples were used to characterize soil beneath the site and for subjective evaluation of petroleum hydrocarbon contamination A flame ionization detector (FID) was used to monitor the presence of volatile organic compounds in the soil Borings not converted into monitoring wells (MW 1 pilot hole, boring SB4 and boring SB5) were grouted to the surface with neat cement grout after a hydropunch groundwater sample was collected Soil samples collected for analysis were sealed, labeled, and immediately placed in an iced cooler and transported to Argon Labs (FLAP #2359) under chain of custody protocol Soil samples selected for analysis were based on field observations and field screening results Analysis consisted of total petroleum hydrocarbons as gasoline (TPHg) using modified EPA method 8015, benzene, toluene, ethylbenzene, xylenes (BTEX) and methyl tent butyl ether (MTBE) using modified EPA method 8020 Selected samples were analyzed for gasoline oxygenate additives utilizing EPA method 8260 Soil cuttings generated during drilling activities were placed on and covered with plastic sheeting pending disposal All drilling and sampling equipment was decontaminated prior to use and between sample collection events to minimize the possibility of cross contamination Rinsate was placed into labeled DOT approved 55-gallon drums pending disposal groundzeltuleburglwc11rpt doc