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APEX ENVIROTECH, INC.
<br /> STANDARD OPERATING PROCEDURES
<br /> "ivarteriy Monitoring Reports
<br /> Nr When practical,the groundwater sari;,'-should be collected
<br /> SOP - 4 when the water level in the well reco•.ers to a'least?A percent
<br /> SAMPLE IDENTIFICATION AND CHAIN_ of its static level. ,
<br /> 0E-CUSTODY PROCEDUR>=S The sampling equipment consists of e',her a'ieflon"bailer,
<br /> PVC bailer,or stainless steel bladder pump Yrth a"Teflon'
<br /> Sample Identification and chain-of-custody procedures ensure bladder. If the sampling system is de:_aced to the well,then
<br /> sample integrity as well as document sample possession from the bailer is usually"Teflon,"but the b:21der pump is PVC with
<br /> the time of collection to ultimate disposal: Each sample a polypropylene bladder. In genera'and depending on the
<br /> container submitted for analysis Is labeled to identify the job Intended laboratory analysis.SQ-mill;;,_-glass,volatile organic
<br /> number,date,time of sample collection,a sample number analysis(VOA)vials,with"Teflon•se;;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 - ti 2
<br /> excavation or boring log. MEASURING LIQUID LEVELS USING
<br /> WATER LEVEL METER OR INTERL=ACE
<br /> Chain-of-custody forms are used to record possession of the PROBE !�
<br /> sample from time of collection to arrival at the laboratory. Field equipment used for liquid-level gauging typically includes
<br /> During shipment,the person vlth custody of the samples will the measuring instrument(water-tewl meter or interface probe)
<br /> relinquish them to the next person by signing the cha€n-of- and product bailer(s). The field V,also includes cleaning
<br /> custody forms)and noting the date and time. The sample- supplies(buckets,solution,spray bot',;es,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 Instrument tip is lowered Into the wetl
<br /> until it touches bottom. Using the pre•.icusly established top-of-
<br /> If these conditions are met,the samples will be assigned casing or top-of-box(i.e.,wellhead vau%)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:dng 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 /> -ceived,client's name,and any other relevant information will the"Measured Total Depth"of the v:e'l.
<br /> Kelso be recorded.
<br /> When necessary in using the Interface probe to measure liquid
<br /> S O P - S levels,the probe is first electrically grou:•ided to either the met at
<br /> LASORATO RY ANALYTICALstove pipe or another metal object nearby. When no ground is
<br /> QUA1-ITY 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 addition to routine instrument calibration,replicates,spikes,
<br /> blanks,spiked blanks,and certified reference materials are The probe tip Is then lowered into the w=-ll 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 vrater. The probe is slo ;y raised until either the
<br /> Quality Assurance/Quality Control program include: oscillating tone ceases or becomes a steadytone. In either
<br /> case,this Is the depth-to-water(DTVI)indication and the DTW
<br /> 9. Participation in state and federal laboratory measurement is made accordingly. Tire steady tone indicates
<br /> accreditation/certification programs; floating liquid hydrocarbons(FLH). 11 this case,the probe is
<br /> slowly raised until the steady lone ceases. This is the depth-to-
<br /> 2. Participation In both U.S.EPA Performance product(OTP)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 raising the 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 are recorded on the liquid-level
<br /> data sheet. When FLH are indica`=_:by the probe's response,
<br /> 4. "Out-of-Control"/Corrective Action documentation a product bailer is lowered partially through the FLH-water
<br /> procedures;and, interface to confirm the FLH an the v.s:er surface and as
<br /> further indication of the FLH thiclT•.ess.particularly in cases
<br /> 5. Muir€-level review/of raw data and c!ient'reports. v'/here the FLH layer is quite thin. Tc:;measurement is
<br /> + recorded on the data sheet as"FLH tri_t,ess."
<br /> SOP - 7
<br /> GROUNDWATER PURGING AND In order to avid cross-contam;nat;c-Cfvw!lsduring the liquid-
<br /> SAMPLING lavet measurement process,we!:s a• m.,ea;_red in the order c`
<br /> "c;aan"to"difV(Where such is available). In
<br /> Sr?r;cr to water sampling.each v,_;i is purged by evacuating a a:!d;:ior,,a:l measurement esuipr.e-:;_ctean_d Wath solution
<br /> rinimum.o;tiree vrett_d ws-11-casing volemes of groundwater, and thoreuah;y rinsed vah daicn•-:_-'---,!?7 be;ore use,6etvw_ar.
<br /> %'ine.^i required,purging vlll continue until either the discharge yeas rrernents in resnechve v.n=;_ :-_ tn_completion of th's
<br /> v.?:=r temperature,conductivtty,or 1=H stabilize,a maximum of ca;/s use
<br /> :=-%',_t:27-casin]Volumes of aeouno va:er have been
<br /> r_co•.erec or tae v.el!is ba;l_d d
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