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l.3.2 txtsution Lluid •2 this fluid la evade by adding the <br />60/40 wiihs percent mixture of sulfuric and nitric acids to rea~enc racer <br />uatll the p! !a 5.00 t O.OS. T!-a fluid is wad to detersive the <br />leuhability of soil frost a site chat is vast o! the Misaiasippi River. <br />5.3.7 Extrusion fluid c3 this fluid is reagent rater (ASTli <br />Typo II raear, or equivalent) and is wad eo datersiae cyanide and <br />volatiles leachability. <br />ZjQ~: It 1a sukeeeed chat these extrueion fluids be monltered <br />lregwnaly for ispuritica. The pH should be oheeked prior <br />to we to ensues chat these fluids era suds up aceuracely. <br />!.4 Aoalytleal standards shall be prepared aeeosdins to the <br />appropriate analytical method. <br />6.0 SAIO'Li COLLECTION, PRESERVATION, AND HANDLING <br />6.1 All sasples shall be collected wins as appropriate sassplittif <br />plan. <br />6.2 At leue three separate repreaentaeive samples should be <br />eolleeted. Ibe lime sample is wad eo dateaiae it particle-size <br />reduction is accessary !or solid satplea, and is wed to dctersilnc aha <br />percent solids for a liquid or tulti•phaaie sample. iha attend sample is <br />wad !or the execution of non•volatilea and the third saaiplc is wed !or <br />the extraction of velaeiles. <br />6.3 Preaervativea shall not be added Co sas+plea. <br />6.4 Suplaa shall be rciriprsted to aiaiaisc lees o! volatile <br />or~aaies sad eo retard biolo~ieal utivity. <br />6.3 When cha sas~ple is to be evaluated !or volatile tones*inanea, <br />care should be cakes to s~iniaizc cha loan of volatilea. Saaples shall be <br />cakes and scored La a raamr eo prewar the loan o! volatile eontasinanes. <br />I! possible, ie !a seeo~endad that say necessary particle-size reduction <br />be conducted u the aastOle is betas taken. <br />6.6 1312 eseruta should be praparad for analysis sad analyzed as <br />soon as posaillc fella ins exaraetioa. If they need to be stored, even for <br />a short pesled of t1M, seorase shall be ae 4•C, and sas+ples for volacilaa <br />analysis shall mt be alloyed to core into contact rith the atsosphere <br />(,t.z., no headapaea). See Section 8.0 (Quality Control) for aceepeable <br />sa~ple and extract holdins class. <br />7.0 PROCEDURE <br />7.1 The prcliainary 1312 evalwelon is perforaed on a siniaua 100 S <br />representative solid sample chat rill not aeewlly underso 1312 extraction <br />(desisaaeed as the first sample in Scep 6.2). <br />S <br />