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z" '•" _j' SYS _ i`Y e � '.T"F <br /> gig. <br /> g. F,_.... 'r-m.l .$''e' - y.�.,.g.4'�'' <br /> a ���c .n <br /> ��� 5���2 <br /> i <br /> F,d. <br /> SIERPA <br /> STANDARD OPERATING PROCEDURE <br /> SOIL SAMPLING <br /> 1'hr following de::c~files s:tntpling praccdt.res used by SLS field persailnel to called, <br /> haridlA�. and transport soil satupk,-s- Before samples arc Collected, careful consideration is],liven <br /> tin to the type of analysis to Ile perm <br /> fored so that precautions are takers to prevent loss of volatile <br /> components or cot)taminat ton of the sample.and to preserve the sample for subsequent analysts. <br /> (� <br /> C5 All cirtlling and sampling cqutpnu:nt is steam-cleaned between boreholes to prevent Cross <br /> - <br /> contamination. 'rhe sampler is Nvashed with an E]'A approved detergent (Such as liquinox or <br /> r <br /> Irisodiutn phospliate)between sample collection. Collection methods slleeiflc to soil sampling are <br /> presented below. <br /> Soil samples are collected ;It pre-specified rf;itlh intervals or at a sediment/lithologic <br /> 0 <br /> change for hyciiugeolagic description and 1l0:rsible chell'1"1 a.:dysis. Samples are collected using <br /> ` a modified California split-spoon sampler lined With 2-or 2.5-Inch 1,D.:c h or 6-inch <br /> llong steatn- <br /> cleaned or new brass tubes. The sampler is lowered into the borehole and driven 18-inches,using <br /> it 140-pound hammer. The drilling coniraclor provides the SES field personnel with the number <br /> of blows required to drive file sampler lbr each U-inches al penctratiotl. <br /> 1 <br /> ® The sampler is tiled extracted from the borehole and the middle or bcttonl brass tube is <br /> carefully removed for possible analysis. `1'ltc soil material is iminediately trimmed flush with the <br /> lube ends,and sealed with'174011 tape beneath polyethylene end caps. The caps are hemicticaLy <br /> l scaled to the brass tube with duct tape. Til'sailli lc is then labeled to include the date.baring <br /> number• depth of sample, project number, Sr.S. and the SES field personnel's initials. The <br /> samples Ire put into a plastic"zip-lock" type bag and placed into an lee chest maintained below <br /> h'C:with blue ice or dry ice,far transport under chain of custody to the laboratory. "Che chain-or- <br /> custody 1.01'111 includes clic prated number. analysis re(Iuested,sample 11), (late analysis and the <br /> SES field personnel's n,mle- '1'110 font,is signed, dated and timed by each person who yields ar <br /> receives the samples be;lrining with(lie 1 iel(I personItel and ending will)the laboratory personnel. <br /> 4 <br /> �a <br />