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APEX ENVIROTECH, INC.
<br /> STANOARD OPERATING PROCEDURES
<br /> Quarterly Mcnitaring Reports
<br /> SCP 4 When practical,the groundwater sample should he callected
<br /> SAMPLE IDENTIFICATION ANO C H-OJ y when the water level in the well recovers to at least an percent
<br /> ,OF-CUs-raay PROCF_MUR1=S of its static level.
<br /> Sample identification and procedures ensure The sampling equipment consists of either a-Teacrl'bailer,
<br /> sample integrity as well as document sample pcssessian from PVC hailer,or stainless steel bladder pump with a'Teaan'
<br /> the time of ccllectian.to ultimate disposal. Each sample ' bladder. It the sampling system is dedicated to the well,then
<br /> container submitted for analysis is labeled to Identify the fab the hailer is usually-Teflan,'but the bladder pump Is FVC with
<br /> number,date, time of sample collection,a sample number a patyprapyfene bladder. In general and depending an the
<br /> unique to the sample,any in-field measurements made, Intended labaratary analysis,4G-milliliter glass,volatile organic
<br /> sam lirt analysis(VCR)vials,with Teflon'septa, are used as sample
<br /> p 9 methodology,name(s)of an-site personnel,and any containers.
<br /> other pertinant field cbserrations also recorded an the held
<br /> excavatian or baring fag. SCP _ y
<br /> h1Ea Lll1�fNG L1gUln L>VELs US1NG
<br /> Chain-cltiustody farms are used to record possession at the WATER LEVr=L METER OR I-N-IrrFIFACE
<br /> sample from time of collection to aniv-al•at the laboratory. PR 0]a E
<br /> Ouring shipment,the person with custody of the samples will .
<br /> reffnqufsh them to the next person by signing the chain-ot-- Field equipment used far liquid-level gauging typicall<f includes
<br /> custady form(s)and noting the date and time. The sample- the measuring instrument(water-level meter or interface probe)
<br /> eontrof officer at the fabaratar/will verity sample fniegnty, and product baffer(s),-The field kit also includes cleaning
<br /> correct preservation,confirm callectian in the proper supplies(buckets,solution,spray battles,and deicnized,rater)
<br /> container(s), and ensure adequate volume for analysis. to be used in cleaning the equipment between wells.
<br /> I
<br /> It these conditions are met,the samples will be assigned Prior to measurement,the instrument tip is lowered into the well 1
<br /> unique laboratory lag numbers for identification throughout until a touches bottom, Using the previously established tap-af-
<br /> analysis and reporting. The lag numbers will be retarded an casing or tap-at-box(l.e.,weUhead•rault)paint,the probe card
<br /> the chain-0f-custody forms and in the legally-required lag back (or hai/ard)is marked and a measuring tape(graduated in
<br /> maintained in the laboratory, The sample description,date hundredths of a fast)is used to determine the distance
<br /> received,client's name,and any other relevant information will beMaen the probe end and the marldng an the card. This
<br /> also be recorded, measurement is then recorded an the liquid-level data sheet as
<br /> the'Measured Total Cepth'of the well.
<br /> SCP 5 When necessary in using the interface probe to measure(quid
<br /> L1.AS C RATo lily ANALYTICAL q UALTTy levels,the probe is first electrically grounded to either the metal
<br /> ASS U RAN C E AND CONTROL stave pipe or another metal abject nearby. When no ground is
<br /> available,reproducible measurements can be obtained by.
<br /> In addition to routine instrument calibration,repCicates,spikes, clipping the ground lead to the handle of the Interface probe
<br /> btanks,spiked blanks,and certified reference materials are case, '
<br /> rautfnei/anatyzed at method-specific frequencies to monitor !
<br /> Precision and blas. Additional campanents of the laboratory .The probe tip is then lowered into the well and submerged in i
<br /> 4uahf/Assurancelcuality Control program Include: the graund`r/ater. An oscillating(beeping)tone ind'icatas the
<br /> probe is in water- The probe is stawly raised until either the
<br /> t. Participation in state and fedora[iabcratarf
<br /> oscillating tone ceases or becomes a steady tune. In either
<br /> accreditasdanfcerc ficadan programs: case,this is the depth-ta-water(OTW)indication and the OTW
<br /> measurement is made accardfnghy, The steady tone indicates
<br /> 2 Participadan in bath U.S.EPA Performance floating liquid hydrocarbons(FLH). In this case,the probe Is
<br /> E,+aivation studies ONS and WP studies)and Inter- stawhf raised until the steady tone ceases. This Is the depth-to-
<br /> [abaratory pertarmance evaluation programs' product(07P)indication and the OTP measurement Is made
<br /> accordingly.
<br /> 3. Standard operating pracedures descnbfng raLrdne
<br /> arid periodic fnstmment maintenance; The process of lowering and raising the prate must be
<br /> repeated several times to ensure accurate measurements. The
<br /> 4• 'Out-0f-Contrat'lCarrective Action documentation CTSN and OTP measurements are recorded an the fiquid-level
<br /> procedures;and, data sheet. When FLH are indicated by the probe's response,
<br /> a product bailer Is towered partially through the FLH-water
<br /> 5. Mufti-levet review of raw data and client reports. Interface to confirm the FLH an the grater surface and as,
<br /> further indication at the FLH ihickiess,particufariy in cases
<br /> S O p 7 where the FLH layer is quite thin. This measurement is
<br /> GROUNOWATER PURGING AND retarded an the data sheetas'FLH thic:azess,'
<br /> SAl.iP'LING
<br /> In order to avoid crass�:ontaminadon of wells during the liquid-
<br /> Pricr to mater sampling,each well is purged by evacuabng.a level measurement process,wells are measured In the order of
<br /> minimum at three wetted Yiell-casfng vaiumes of graundYrater, 'clean'to'dfrty"(Yrhere such information is availabfe). In
<br /> When required, purging will candnue until either the discharge addition,all measurement equipment is cleaned MU-i saiudcn
<br /> water tamparature,conductivity,or pH stabilize,a maximum at and theraughiy+rinsed with defnnized water befare use,behoreen
<br /> ten wett`dzasing vafumes at grau;i&4atar have been measurements in respective wefis,and at the campletfan of the
<br /> recovered,or the weft is haired dr/. da,fs use.
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