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APEX ENVIR0-rEcH, INC"
<br /> STANDARD OPERATING PROCEDURES
<br /> Quarterly Monitoring Reports
<br /> When practical,the woundwater sa:r,:e should be collected
<br /> 4 when the water level in the well reco::.-to a',least Ea percent
<br /> SAMPLE iDENTIFIC of its static level.
<br /> IDENTIFICATION AND CHAIN_ •
<br /> CSF-CUSTODY PY O CEDURFS The sampling equipment consists of e'her a"Teflon"bailer,
<br /> PVC bailer,or stainless steel bladder pump YRth a"Teflon"
<br /> Sample Identification and chain•of•custodyprecedures ensure bladder, if the sampling system is de.'cated to the well,then
<br /> sample Integrity as well as document sample possession from the bailer is usually"Teflon,"but the t:addar pump Is PVC wKh
<br /> the time of collection to ultimate dispdsal: Each sample a polypropylene bladder. In genera'ai-d depending on the
<br /> container submitted for analysis is labeled to identify the job intended laboratory analysis,S�mill Iter glass,wlatite organic
<br /> number,date,time of sample collection,a sample number analysis(VOA)vials,with"Teflon"sed;a,are used as sample
<br /> unique to the sample,any In-field measurements made, containers.
<br /> sampling methodology,name(s)of on-site personnel,and any
<br /> other pertinent field observations also recorded on the field SOP - 12
<br /> excavation or boring log. MEASURING LIQUID LEVELS USING;
<br /> WATER LEVEL METEI1 OR 1NTERFACIE
<br /> PRONE
<br /> Chain-of-custody forms are used to record possession of the
<br /> sample from time of collection to arrival at the laboratory. Field equipment used for liquid-level gaging typically includes
<br /> During shipment,the person vAth custody of the samples will the measuring instrument(Prater-1ey_1 meterorInt erface probe)
<br /> relinquish them to the next person by signing the chain-of- and product bailer($). The field kit also includes cleaning
<br /> custody form(s)and noting the date and time. The sample- supplies'(buckets,solution,seray boles,and deionized water)
<br /> control officer at the laboratory will verify sample Integrity, to be used in cleaning the equipment between wells,
<br /> correct preservation,confirm collection in the proper
<br /> container(s),and ensure adequate volume for analysis. Prior to measurement,the Instrumerk,lip is lowered into the well
<br /> until it touches bottom. Using the pre•.icusly established top-o f-
<br /> I€these conditions are met,the samples vrill be assigned casing or top-of-box(i.e.,wellhead vzu•,)point,the probe cord
<br /> unique laboratory log numbers for identification throughout (or halyard)Is marked and a measurlrg tape(graduated in
<br /> analysis and reporting. The log numbers Yrill be recorded on hundredths of a foot)Is used to determine the distance
<br /> the chain-of-custody forms and in the legally-required log book behveen the probe end and the merlcrg on the cord. This
<br /> maintained in the laboratory. The sample description,date measurement Is then recorded on the liquid-level data sheet as
<br /> received,client's name,and any other relevant information will the"Measured Total Depth"of the t5s:l.
<br /> also be recorded.
<br /> When necessary in using the lnter<ace probe to measure liquid
<br /> SO�, S levels,the probe is first electrically grcu+nded to either the metal
<br /> L bTa01�11TORY ANALYTICAL stove pipe or another metal object naz:by. When no ground Is
<br /> QUAL•1Tv, available,reproducible measurements can be obtained by
<br /> ASSU FLAN C E AND CONTROL clipping the ground lead to the handle o,the interface probe
<br /> case.
<br /> In addition to routine instrument calibration,replicates,spikes,
<br /> blanks,spiked blanks,and certified reference materials are The probe tip is then lowered into the Well and submerged in
<br /> routinely analyzed at method-specific frequencies to monitor the groundwater. An oscillating(bearing)tone Indicates the
<br /> precision and bias. Additional components.of the laboratory probe is in Yrater. The probe is slog;yralsed until either the
<br /> Quality Assurance/Quality Control program Include: oscillating tone ceases or becomes a st_adytone: In either
<br /> case,this is the depth-to-vrater(DTVindication and the DTW
<br /> 1. Participation in state and federal laboratory measurement is made accordingly, 1 ire steady tone indicates
<br /> accreditation/certification programs; floating kquid hydrocarbons(FLH). In this case,the probe is
<br /> slowly raised until the steady tone ceases. This Is the depth-to-
<br /> 2, Participation in both U.S.EPA Performance product(DTP)indication and the DTP measurement Is made
<br /> Evaluation studies(WS and WP studies)and inter- accordingly.
<br /> laboratory performance evaluation programs;
<br /> The process of lowering and raisirc th>probe must be
<br /> 3. Standard operating procedures describing routine repeated several times to ensure accurate measurements. The
<br /> and periodic Instrument maintenance; DTW and DTP measurements art rzccrded on the liquid-level
<br /> data sheet. When FLH are indicatF,lythe probe's response,
<br /> 4. "Out-of-Control"/Corrective Action documentation a product bailer is lowered par;ia!i14=:egh the FLH-water
<br /> procedures;and, i.�terface to confirm the FLH on the•r._;er surface and as
<br /> fu:1,her indication of the FLH thio: -2s:.pa;icularly in cases
<br /> 5. FAu ti-towel revievi of rave data and cfent"reports, �''�=re the FLH layer is quite thin. Ti r';measurement is
<br /> f recorded on the data sheet as"Fi.!
<br /> SOP - 7
<br /> SRC)UNDWATER PURGING AND Encrdertoa•rsidcross-coru that:_-_;�,e?is
<br /> during the liquid-
<br /> SAMPLING le,,cl rneasurement process.Nve!:-e•e s•_red in the order c:
<br /> r "clean'to"d=.?y"(%•,hare such i^.`c r =:=t is avaitable). In
<br /> Pr;cr tc water samplinc,ea_h N•,e;l is purged by evacuating a a+c::ier,,e'l measuram_nt eq_:pr ; cleay_d w h solution
<br /> r ini-^u-c'thrFe Yrai:ed WS -casin a volumes of groundwate:. 2'd tharouchi frirssad ti.�h d= n c;_ -=:e:ta:ore use,t�etrw_=r•.
<br /> '.`In_.^.required,purging r:f cora.-nue ur„il e;herthe tfischarea r,.e=_surererts res. cti-e YY;; :-c e:the completion of t;:e
<br /> _.er ternpera:ure.canductiv;zy,cr FH stabs!te,a maximum cf za;/s Lse �-
<br /> :-. . volumes c:mounay.-a4er haus been
<br /> r__a•.e:_c nr the r•,e?!is bailed cr•,
<br />
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