ARCHIVED REPORTS XR0006787 - Laserfiche WebLink

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!� borehole to a point dust below the surface of the water Upon being returned to grade, the contents of each bailer were transferred into Volatile Organic Analysis (VOA) vials and one amber glass liter bottle Each container was promptly covered with a teflon-lined screw cap , labeled, and placed in an iced, insulated container for trans- portation to Priority Environmental Labs under chain of custody Subsequent analyses were performed for Total Petroleum Hydrocarbons as Diesel (TPH-D) , Total Petroleum Hydrocarbons as Gasoline (TPH-G) , benzene , toluene, ethyl - benzene , and total xylenes (BTEX) using EPA Methods 3510/ 8015 and 5030/8015-8020 ( 602 ) , respectively The soil profile encountered while advancing boring EP-1 consisted of 6 inches of concrete and gravel underlain by very moist , light-brown silty clay becoming slightly moist light-brown silty clay with rust streaks at approximately 3 feet below grounds surface (bgs) Slightly moist , light brown silty clay with light-olive colored streaks was present to 5 feet Light-olive colored, compacted dense clay was encountered between 5 and 7 feet bgs An odor consistent with that of fuel hydrocarbons was detectable at 5 feet- becoming intense at 6-7 feet Silty sand encountered between 7 and 7 5 feet was underlain by a pea gravel and sand mixture to 8 feet This mixture was saturated with dark-colored, malodorous oil The soil beneath was fine sand that continued to the bottom of the bore hole at 9 feet Groundwater was encountered at approximately 7 feet The soil profile encountered while advancing boring EP-2 consisted of 6 inches of concrete and gravel underlain by loose, slightly moist sand and gravel to 1 foot bgs Slightly moist , light-brown silty clay with rust streaks was present to approximately 4 feet where the rust streaks became light-olive colored Light-olive colored dense clay containing little moisture was present between 4 5 and 6 feet Moist , dark-colored silty clay with streaks of sand was present between 6 and 7 feet Very moist , dark-colored fine-silty sand was present between 7 and approximately 8 5 feet . An odor consistent with that of fuel hydrocarbons as present in this layer Fine sand was encountered between 8 5 and 9 feet Groundwater was encountered at approx- imately 7 feet The soil profile encountered while advancing boring EP-3 consisted of 6 inches of concrete and gravel underlain by light-brown silty sand containing little moisture . Silty- clay containing little moisture was present between 1 and 3 feet . This was underlain by slightly moist , very light- brown clay to 6 feet Slightly moist , light-brown silty clay containing rust streaks was present between 6 and 7 feet and was underlain by moist , light-olive colored silty Page 3