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KG -24 '95 ee:40M LGR,'1 WEST RC _ /ILLS MOM <br />Sf4�l-L a Co. <br />STANDARD_ OPERATING PROCEDURES <br />RE: EXCAVATION SAMPLING (SOIL -AND WATER) <br />SOP -2b <br />Soil - <br />Excavation and l en Ineernon of a registered <br />T,oreduce the po en al for crossecontaminatiion, all excavation <br />geologist or cavi engineer.Orn <br />orcfromamatenall <br />samples <br />are typically collected directly, fz <br />removed from the excavation In a backhoe or excavatafbo other suitable containers for <br />area or material may be 'sealed In a ortablebhotolonization detector, flame Ionization <br />volaille organic screening with either a p p _ _ be used to describe the <br />detector, or an explosimeter. Another portion of the sample may <br />excavated materlal. - <br />es of <br />Soil samples for,chemical,analysls are collected_;In debn 2 finches oultside-diameed brass ter) or <br />varying diameters and lengths (typically 6 Inches long Y an Inset <br />other1aappprOphi.eert ay a used To reduce the potential orcross-coe container,,., A hand -driven ntamination between <br />samp o . <br />covery, the <br />samples,"the sampler is cleaned, between each sampling <br />ofevent. <br />a f zatlonon eend cross <br />samplentalrtar .Is sealed_ 10 rr)Inlmize the., potgs., : . cl <br />contamf e� owprior <br />h o lestiloap chemic <br />Tenon or aluminum foil sheeling efThepcapsymay be: <br />at each , Pounds; The <br />sealed g,4th duct tape or similar material lacking Inappropriate chemical comp <br />sealed'sample is labeled end refrigerated for dellverye under strict chain''-of=custody, to the <br />analytical laboratory. <br />Water <br />Excavation water samples are not advised, because soil particles typically Present from <br />may <br />affect the sample. However, if requdi� d�� water <br />sampling cont�alnecrted either orirom a deanybaiter <br />the water surface, if accessible, by dipping be collected <br />or similarsampling device lowered Into the excavation. Water <br />Dependsamples <br />ing on the Intended <br />frorh ,the excavating equipment bucket, If necessary. <br />anaiysesi-,0.6 to 1 -liter .plastic or, glass conteinerscall 40edi1as sampleacontainersgenic <br />analysisVVOA) vials, wlth "Teflon septa, are typically <br />For volatile organic analyses, the water sample is decanted into each VOA vial In such <br />a manner that there Is no meniscus at the top of the vial.f al rbubbl secureduIcWY ere present. <br />top of the vial. The vial is Inverted and gently tappedto see <br />If none are present, the vial is labeled and refrigerated for delivery, under strict chain -of - <br />ion <br />dentificationrnumber, Job Identification nu. Label mber, sampler dlenCflcaInclution, datees a , and time. <br />AMCWE n0P4W%"Y,w <br />