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APEX ENVIROTECH, INC'
<br /> STANDARD OPERATING PROCEDURES
<br /> 01arterly Monitoring Reports
<br /> T When practical,the groundwater$a-,;a should be collected
<br /> when the water level in the well reco- s to a`least 80 percent
<br /> 4 of its static level
<br /> SAMPLE IDENTIFICATION AND CI-IAIN-
<br /> OF"CUSTODY PROCEDURES The sampling equipment consists cfa rier a"Teflon"bailer,
<br /> PVC bailer,or stainless steel bladd- pump with a"Teflon'
<br /> Sample identification bladder If the sampling system is d:�cared to the VIell,then
<br /> cation and chain of custody procedures ensure
<br /> the bailer is usually"Te
<br /> sample integrity as well as document sample possession from flon,`but the t; pump Is PVC�wrth
<br /> the time of collection to ultimate disposal Each sample a polypropylene bladder In genera'a-d depending on the
<br /> intended laboratory analysis,
<br /> container submitted for analysis Is labeled to identify the job mr,i 1,_ glass,sas organic
<br /> analysis(VOA}vials,vvrth"Teffll
<br /> number,date,time of sample collection,a sample number on s?;,a are used ed as sample
<br /> unique to the sample,any in-field measurements made, containers
<br /> sampling methodology,name(s)of on-site personnel,and any SQP - 12
<br /> other pertinent field observations also recorded onthe field MEASURING LIQUID LEVELS USING
<br /> excavation or boring log WATER LEVEL METER on INTERFACE
<br /> PROSE
<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 ga rging typically includes
<br /> During shipment,the personµnth custody of the samples v'nll the measuring instrument(vrater-lewi meter or interface probe)
<br /> relinquish them to the next person by signing the chain-of- and product bader(s) The field kit also includes cleaning
<br /> custody forms)and noting the date and time The sample- supplies(buckets,solution,spray botnes,and deionized water)
<br /> control officer at the laboratory will verify sample Integrity, to be used in cleaning the equipment L etween wells
<br /> correct preservation,confirm collection In the proper
<br /> container(s),and ensure adequate volume for analysis Prior to measurement,the Instrument t,p is lowered Into the well
<br /> until it touches bottom Using the pre.tiously established top-of-
<br /> If these conditions are met,the samples will be assigned casing or top of box(i e,wellhead vaA)point,the probe cord
<br /> unique laboratory log numbers for identification throughout (or halyard)is marked and a measuring tape(graduated in
<br /> analysis and reporting The log numbers will 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 between the probe end and the ma•Icro on the cord This
<br /> Oaintalned in the laboratory The sample description,date measurement Is then recorded on the trquid lavel data sheet as
<br /> leceived.client's name,and any other relevant information will the'Measured Total Depth"of the we I
<br /> also be recorded
<br /> When necessary in using the Interface probe to measure liquid
<br /> levels,the probe is first electrically grounded to either the metal
<br /> stove pipe or another metal object nea oy When no ground Is
<br /> LAlBO RATO RY ANALYTICAL q UALITY available,reproducible measurements can be obtained by
<br /> ASSURANCE AND CONTROL. clipping the ground lead to the handle of the interface probe
<br /> case
<br /> In add}tion to routine instrument calibratmn,replicates,spikes,
<br /> blanks,spiked blanks,and certified reference materials are The probe tip is then louvered into the v-ell and submerged in
<br /> routinely analyzed at method-specific frequencies to monitor the groundwater An oscillating(beer ng)tone Indicates the
<br /> precision and bias Additional components of the laboratory probe is in%rater The probe Is sle.,',l raised until either the
<br /> Quality Assurance/Quality Control program include oscillating tone ceases or becomes a shady tone In either
<br /> case,this Is the depth-to-venter(DTV`!)indication and the DTW
<br /> I Participation in state and federal laboratory measurement is made accordingll Tre steady tone indicates
<br /> accreditatiordcertification programs, floating liquid hydrocarbons(FLH) l i tnis case,the probe is
<br /> sloeAy 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(W5 and WP studies)and inter- accordingly
<br /> laboratory performance evaluation programs,
<br /> The process of Invvenng and raising the probe must be
<br /> 3 Standard operating procedures describing routine repeated several times to ensure accLra'e measurements The
<br /> and periodic instrument maintenance, DTW and DTP measurements are recorded on the liquid level
<br /> data sheet When FLM are indica'=:b,the probe's response,
<br /> S Out of-Control/Corrective Action documentation a Product bailer is lowered partiarl f tr=Lgh the FLH-water
<br /> procedures and interface to confirm the FLH on the v o'er surface and as
<br /> further indication of the FLH thickress pa kicularly in cases
<br /> 5 ItAuri level review of ra v da'a and c1 ent'reports �.fi=_re the FLH layer is quite thin T r 5 measurement is
<br /> recorded on the data sheet as"FL-
<br /> SOP
<br /> FL SOP - 7
<br /> GROUNDWATER PURGING AND in order to aioiocross contamna _-c'we-lisduringtheliquid-
<br /> SAMPL.ING to ei measurement process vre"=__=r-e3sured in the order e'
<br /> wean"to"ditJ"(whare such in'c -_ _n is available) In
<br /> =;r cr t.vra,er sa-npling earn v,e,,rs purged by evacua}ing a zicr-ar, a l measurement e:rupr-,- :cleaned wrtth solution
<br /> rn ni—um of tire=wetted veli-casing volumes of groundwater anC,noro oris/rinsed d=on=-_ s_-2 be'ore use,betweer
<br /> %linen required,purging%411 continue until either the discharge rneasurerierts n resoective..e : !-:2 tnivicompletronottre
<br /> 3 er tempera ure conductiv-Ly or pH stabilise a ma)ornum of ca Js use _ -
<br /> S` e"-:asrng volumes o'npounavaiter have been
<br /> .__o.er}a or the veli is baled a,,
<br /> Fnee 1-
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