ARCHIVED REPORTS_XR0012715 - Laserfiche WebLink

Home Browse Search

the fill l "n) and the corraMp"dint; opporite end of the tank and obtaining n e.nrnpht learn [#1r bnl:kfrll/native coil interface or a short distance belosw the Interface. In the rnl;rt of tanko, lows them 1,000 gniions in capacity. onl onn snnopie from lynnrath the thrill Is required. A short dlntnnce hrfs been drefine.d by Region 2 Ponrd engineers as not xrenter than twsnty-r.�ur Inches below tin backfill/not€vh soil interfere and is generally taken x`,x he one foot helaw the the, bnchfill/nnti4•e Moil interface. This "I is brjught up In the bnckhnn buckr.t. A MhoVr,l or trowel €s used to cut away surface aai# dad backfill material 1.11ieh MY havrt bran included In the bti+ct•et, and the sanlPlr in taken by fiunhing no• driving 11 brass ■omPtp finer into the newly soil leer: the denlgnnted depth and location. Additional clarifications by RrrgiOM 1 kestrel engineers have indicated Wit when there €a an Obvious diffnrenve in tion relative Contamination of ac'1 btouglll up from the Interfnca depth, then It is the relatively more conte:linated soil that 11hould be selected too- incllrslon In thn sample. R"EC"VE EXPLORATORY SAMPI.I~S: T'+ir type of 601.1pling 4mPloys the same tutmPln C011ect€oto and handling I'_ocedoran as arc t4sed In standard RWQCD Interface sampling, but the coif !),�€caltm obtained at a greater depth or from a Position throE !s later► •. from the lnt+rrta,.e location. STOCKPILE Stinv#?Y M4171F1tD PIA tqC pattern, but uses n moaiff 'ROTtk`OL: This sampling follows a survey material that haver 1 1;.'" `SIU Pt' At Coea ol for riPling stockpiles of b .n _ ,_•ly r roved from a tank pi, excavation. This Protxol calls for a d,ir a - i, _t I. rcgtsfr.,.. to "lected for every 12.5 cubic yards of marc a jAl. ' ,,. �• : t.,• includes sides of the stockpile. Strict uhtr>;r4.tn._ .•. the %AQ�11 pr, a1 (for purposes of evaluating the+ let .!t! '+r furl wai-or 'o 'se di1�:l.:rgCd from a stockpile, calls for inclusion of the rurrtir t. r..bter4al in the brass liner which Is driven into the pile at a r:gl„.angle ;to the angle of repose), until the i€oar is toil. LtnlR r >;I1tc.:iCA1,v +tsk« per nnKl routine., rr.^.ltry m ,E ; . -lesidW-e to exclude the surface sail and collect soil from o der.h ni gh�. :r .•ir•ntrcn inches. i,thlla this the sample in t.., .i,r_ r on �1 It nigher results then wouldPa strict s BAAQiIt] s..mpl,t, it i .,� ... .cls.ti�C;r;j'"ve of the ieve!a of fuel hydrocarbons present In the soil real is nett like)• to mislead the client or contractor Into offliauling or bncklilling w!,h soils valumer. tockpiles that ara relatively clean at the surfacer, boot unacceptably rnnLomFnated through the remainder of their SA14PI,g (MNTAINEIiS At.r firm ulles new sample containers of the t . the Rt►QCB far tea callacilan at can le s-ni- Ype sp+�cified by either EPA or It sites Miers underground atarsgo- - _ —T -- tanks-ere-Irovolre±d. i1'ater snmpleu are contained in 40 ml volaMe organic anslysls vials (VOAs) when an:,lys;z for gasoline and similar light volatii compounds Is Intended. TheKe cont:o€ser• are prepared according to EPA SW tiitl and will conta#n A small slmount of preservative AS gasoline ishan the analysis is for TPgasoline or EPA 2. Villis ilkterlded for EPA 601 62� GC3�lS attalysis and EPA pt•ocedures.are not preserved. Closure !a acroasPli�hed with an EPAopeheaded ftr)rirsge accassitici plastic sera: rap brought down On top of a Teflon faced trampling 1UPort 811057-C-1 Chav ran 1918 SECTION Tk0/ 7>aga 9