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Y w�' <br /> ]astir caps to provide an <br /> The ends of brass tubes containing soil samples for laboratory <br /> analysis were covered with Teflon film and o r lately marled on site <br /> air tight seal. Leach sample tube was apt P <br /> with the boring number, sample designation, <br /> date, time, <br /> and depth. <br /> Samples were placed on ice in a cooler and transported to Aniab <br /> Analytical LaboratoriOs <br /> locatedinanalysis. <br /> A lab is a State-of-California <br /> certified laboratory ere feted at <br /> As a standard procedun 1`C1`oT�lpunied the saoinplesrms yto the laboratory. <br /> the time of sampling <br /> Copies of the Chain-of Custody forms are shown in Appendix 1 <br /> TI, I�ARAC'ITRIZATION <br /> Soils in the upper 10 COOLeft by tilused to <br /> e of tle izeas <br /> tanks aTliislmate material <br /> backfill the excavation l } clayeysands. <br /> consisted of rubble and gravel in a soil which o tended in most <br /> Underlying the fill material is a silty clay clay was <br /> borings to 25 or 30 feet below the ground s surfatructurce. The silOne t vel tense <br /> slightly moist to dry with a strong p Y <br /> and other lenses of medium to coarse sand were found in the silty <br /> clay below 30 feet. <br /> aH '. IL i TI-'-Cxq <br /> om the bor'irLgs were placed in three labeled 55- <br /> The sail cuttings fr <br /> gallon drums pending completion of laboratory analyses. Following <br /> the cuttings <br /> were taken to Casmalia <br /> receipt of the analytical y Erick on, Inc. A copy of the manifest for <br /> Resources for disposal by endix T. The bore holes were <br /> + the drummed cuttings is in APP roximately 3 feet below <br /> backfilled with unrefined bentonite to app 3 feet to rade. The <br /> grade. Grout was used to fill ioutrmixrnin were discussedg and pubic <br /> components and ratios of the g' <br /> upon with a representative fionthe San <br /> t e site. <br /> Joaquin County <br /> Health Services who was present <br /> T,AB Ii AT RY ANA1,y11ICAL RESUL <br /> All samples were analyzed for Total <br /> P of etrothemsalyde aan rbons lys s EPA <br /> e <br /> Method 8015 modified. sreports are shown in Appendix <br /> summarized in Table 1-2. Laboratory P borings except <br /> F. Petroleum hydrocarbons <br /> detections vereccharacterized as diesel.ted in all soil With <br /> Borings 1, 2, a soil contamination was <br /> only two exceptions (Borings 6 and 10), <br /> confined to z zone around the bottom <br /> obtained on eallr bolingslexcept <br /> clean bottom-Of=the-holt. P <br /> 1-J <br />