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INTERNATIONAL TECHNOLOGY CORPORATION <br /> All soil samples were analyzed by IT Analytical Services laboratory in San Jose, California <br /> The samples were analyzed utilizing the following methods and detection limits <br /> ANALYSIS NAME METHOD DETECTION LIMIT <br /> (Ppm) <br /> TPH as diesel and DHS GC-FID <br /> gasoline MODIFIED 8015 <br /> (5030) 10 <br />' BENZENE, EPA MODIFIED benzene 0 005 <br /> TOLUENE, 8020 toluene 0 005 <br /> ETHYL BENZENE, ethyl benzene 0 005 <br />' XYLENES (BTEX) I I xylenes 0 005 <br /> NOTE TPH = Total Petroleum Hydrocarbons <br /> TPH as diesel (also referred to as high boiling hydrocarbons) <br /> TPH as gasoline (also referred to as low boiling hydrocarbons) <br /> Each sample was delivered to the laboratory via a laboratory couner Samples were <br /> transported in a refrigerated ice chest with appropriate chain of custody forms (Appendix B) <br /> Upon arrival at the laboratory, the samples' condition were checked and any inconsistencies <br /> were noted on the chain of custody forms Copies of signed laboratory reports are contained <br /> in Appendix D. <br /> Due to a large amount of fine grained materials found in the subsurface a sieve analysis to <br /> determine the appropriate gravel pack and screen size was deemed unnecessary by the field <br />' geologist <br />' 3.3 MONITORING WELL INSTALLATION <br /> Monitoring wells were installed in both of the soil borings. All wells were constructed using <br /> two-inch diameter, Schedule 40, threaded PVC casing and threaded, 0 010 inch slotted, <br /> Schedule 40 PVC screen The screen interval extended from 45 to 60 feet below grade <br /> Screen extended approximately two feet above the saturated zone to accommodate seasonal <br /> groundwater fluctuations <br /> 6 <br />