Laserfiche WebLink
12/03/2003 14:25 2095224227 GEOLOGICAL TECHNICS PAGE 06 <br /> %WWI <br /> CreologicalTcckncicsl�e, Page 2 <br /> Site Characterization Work Plan <br /> Cardoza(Louise) <br /> Project No. 1135.2 <br /> December 2,2003 <br /> to fill the core barrel. The soil sample enters an acetate cylinder contained in the coring tool. <br /> Upon filling, the coring tool is pulled from' the hole and the cylinder is removed. The <br /> cylinder is then cut and the selected interval is capped with Teflon end caps and placed on ice <br /> for shipment to the laboratory. The remainder is used for geologic logging.' <br /> Up to three soil samples per Geoprobe location will be submitted to the laboratory for <br /> analysis,with the capillary fringe soil sample from each borehole analyzed as a minimum. <br /> Groundwater Grab Sampling <br /> The expected depth to groundwater is approximately 25 — 35 feet below ground surface <br /> (bgs). Upon reaching the capillary fringe a hydropurtch type sampling tool will be advanced <br /> 3 feet into the groundwater and a groundwater sample will be collected. The samples are <br /> collected from either a mini stainless steel bailer or utilizing tubing and ball check valve with <br /> gentle transfer into VOA vials. The "VOA vial is capped, inverted, tapped, and checked for <br /> headspace bubbles. The vial will be labeled and placed on ice for shipment to the laboratory. <br /> Clean surgical gloves. are worn at all times in handling of the sample and sampling <br /> equipment. The bailer is cleaned between uses with an Alconox solution. <br /> After the groundwater grab sample is collected the borehole will be closed with a neat cement <br /> grout containing less then 4%bentonite_ <br /> 2.2 Soil Laboratory Analyses <br /> Up to 9 soil samples will be submitted to Sherwood Laboratories of Hilmar (State Certified <br /> Laboratory #1400)for analysis for: <br /> • Benzene,toluene, ethylbenzene and xylene(BTEX) by EPA method 8020. <br /> Gasoline range petroleum hydrocarbons (TPH-G)by EPA method 5030/8015(m). <br /> • Gasoline oxygenates (MTBE, DiPE, ETBE, TAME and TBA)by EPA method 8260. <br /> The detection limits for these compounds are listed below. A Chain of Custody will be <br /> completed for all samples collected and tracked to ensure sample integrity. <br /> eteRibn. iznjts: BTEX xygenates - <br /> 01 �tg $) 3 -5 -20 100 <br /> 2.3 Groundwater Laboratory Analyses <br /> One groundwater sample from each borehole will be submitted to Sherwood Laboratories of <br /> Hilmar(State Certifed Laboratory#1400) and analyzed for: <br /> a Benzene,toluene, ethylbenzene slid xylene (BTEX) by EPA method 602. <br /> • Gasoline range petroleum hydrocarbons(TPH-Gas) by EPA method 5030/8015(m). <br /> • MTBE, DIPS, ETBE, TAME and TBA,by EPA method 8260 <br /> The detection limits for these compounds are listed below. A Chain of Custody will be <br /> completed for all samples collected and tracked to ensure sample integrity, <br /> etectzonLimits: xygenates - aso ine <br /> ate µg <br />