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APEX ENVIFiOTECH, INC.
<br /> STANDARD OPERATING PROCE0U6Fz5
<br /> Quarterly Monitaring Reports
<br /> SOP a When practical,the groundwater sample should be collected
<br /> SAMPLE IOEflITIFICATION AND CHAIN- when the water level in the well recavers to at least k percent
<br /> OF-CUSTODY PROCEDURES afisstadclevel.
<br /> Sample fdentiCcatian and chain,,of-custady procedures ensure The sampling equipment consists of either a'Tenon'.bailer.
<br /> sample integrit'f as well as document sample possession from PVC bailer,or stainless steel bladder pump with a"reran' .
<br /> the time of collection to ultimata disposal. Each sample bladder. If the sampling system is dedicated to the Weil,theft
<br /> container submitted far analysis is labeled to Identify the jab the bailer is usually'Tenan,'but the bladder pump is PVC with
<br /> number,date,time of sample collection,a sample number a polypropylene bladder. In general and depending on the
<br /> unique to the sample,any in-held measurem=ents made, intended laboratory analysis,40-milliliter glass,Volatile organic
<br /> sampling methodology,names)of on-site per#cnnel,andany analysis(VCA)vials,with-Fallon-septa,are used as sample
<br /> Other pertinent field abserradorts also recorded on the field containers.
<br /> excavation or baring lag.
<br /> SOP -. I=
<br /> M993 LIRING LIgUIO LE—j-ELS LISIAIG
<br /> Chain-01-custody farms are used to record possession of the WATER LEVEL METEF't OR INTEFCI+ACE
<br /> sample from time of collection to amval at the labcratary, PRO B1~
<br /> Curing shipment,the person with custody of the samples will
<br /> relinquish them to the next person by signing the chafn-0f- Field equipment used far liquid-level gauging typic2i y includes
<br /> eustady form(s)and noting the date and time. The sample- the measuring instrument(water-fevel meter or interface probe)
<br /> control officer at the Iaboratery wits verify sample Integrity, and product bailet(s). The field kit also Includes cleaning
<br /> correct preserratian,can(=callachcn in the proper supplies(buckets,selu#on,spray battles,and deianized water) .
<br /> cantainer(s),and ensure adequate volume for analysis, to be used in cleaning the equipment between welts.
<br /> If these conditions are met,the samples mit be assigned Prior to measurement,the instrument tip is lowered into the welt
<br /> unique laboratory lag numbers far fdendricadon throughout until it touches battam, Using the previously established tap•af-
<br /> anaiysis and reporting. The lag numbers will be recorded on casing ar tap-01-hex(r.e.,weilhead vault)paint,the probe card
<br /> the farms and in the Iegally-required fag book (or halyard)is marked and a measuringe
<br /> tape in .
<br /> maintained in the laboratary. The sample description,data hundredths of a fact)is used to determine the distance
<br /> received,clients name,and any other relevant Warmadan vett between the probe end and the maridng an the card. This
<br /> t also be recorded. � measurement is then recorded an the liqutd-Ievef data sheet as
<br /> the'Measured Total Depth'of thewed.
<br /> When necessary in using the interface probe to measure liquid
<br /> LAJBOFt4TORY ANALYTICAL QUALnY. levels,the probe is first electrically grounded to either the metal
<br /> aSSt3FIAI+dCEaS�iD COl4TFtOL stave pipe oranathermetal abjectnearby. When no ground is
<br /> available,reproducible measurements can be obtained by
<br /> In addition to routine instrument calibratfan,replicates,sptl=. c2Ppm9 the ground lead to the handle of the interface probe
<br /> blanks,spiked blanks.and cartifted reference materials are case•
<br /> routinely analyzed at method-specific frequencies to manitar .
<br /> precision and pias. Additional components of the laboratory The probe Zip is then lowered rota the well and submerged In
<br /> Cualitr AssurancelCuality Control pragrarn include: the,graundvrater.LAn asciltaarg(beeping)tone indicates the
<br /> probe is in water. Therobe is slowly I
<br /> p awry+wised until either the a
<br /> 1. Participation in state and federal laboratory
<br /> oscillating tone ceases of becomes a steady lane. In either
<br /> acareditadenfcerdacation programs; case,this is the depth-to-water(07W)indlcadan and the CTW
<br /> measurement is made accardingly. The steady tone indicates
<br /> 2 Participation in bath U.S.EFA Perfarmance Boating liquid hydrocathans(FLH). In this case,the probe Is
<br /> Eyaluadan studies(V!5 and WP studies)and inter- slowly raised until the steady tone ceases. This Is the depth-ta-
<br /> labarataryperformance rraluaidan programs; product(CTP)Indication and the 07P measurement Is made
<br /> accardingty.
<br /> 3. Standard operating procedures dascrthiag routine
<br /> and periodic instrument maintenance; The process of lowering and raising the probe must be
<br /> repeated several times to ensure accurate measurements. The
<br /> 4. 'out-0f-CantrorlCarrec ive Action dacumentatian CTW and 07P measurements are retarded an the liquid-level
<br /> procedures:and, data sheet. When FLH are indicated by the probe's response,
<br /> a product bailer Is lowered partially through the FLH-water
<br /> 5. filuai-level review of raw data and client reports. Interface to confirm the FLH an the water surface and as,
<br /> further indication of the FLH Nckress,particularly In cases
<br /> SOP - 7 where the FLH layer is quite thin. This measurement Es
<br /> GROUNDWATERPURGING ANt7
<br /> recorded an the data sheet as'FLH thickness,'
<br /> SAMPLING
<br /> In order to avoid crass-centamiradan at wells during tate Ilquid-
<br /> `_ Briar to'e-rater sampling,each well is purged by evacuating a level measurement process,wells are measured In the order of
<br /> minimum of three we tzd well-casing vaiumes of greuncrrmter. 'skean to'dirty'(where such inlarmatian is aya7able). In
<br /> 4'Itien required,purging will ccnl nue until either the discharge addition,all measurement equipment Is cfeanad with saiutfon
<br /> vrater temperature,canducti,ritf,or pH stabilize,a maximum of and thorough/rinsed v th deianeed water belare use, be>.veen
<br /> ten wetted-casing vaiumes al graundauter have been measurements in respectrre rrwelts,and at the campletfan al the
<br /> recovered,or the wefl is bailed dry. days use.
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