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<br /> APEX ENVIROTECH. INC.
<br /> r --� STANDARD OPERATING PROCEDURES k
<br /> Quarterly Monitoring Reports
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<br /> SOP _ a When practical,the groundwater sample should be collected
<br /> SAMPLE IDENTIFICATION AND CHAIN- when the water level in the well recovers to at least 80 percent
<br /> OF-CUSTODY PROCEDURES of its static level.
<br /> The sampling equipment consists of either a"Teflon".bailer,
<br /> Sample identification and chain-of-custody procedures ensure PVC bailer,or stainless steel bladder pump with a"Teflon" I
<br /> sample integrity as weal as document sample possession from bladder. If the sampling system is dedicated to the well,then j
<br /> the Sma of collection to ultimate disposal. Each sample the bailer is usually'Teflon,'but the bladder pump is PVC with f
<br /> container submitted for analysis is labeled to Identify the job a polypropylene bladder. In general and depending on the
<br /> number,date,time of sample collection,a sample number intended]aboratory analysis,40-milliliter glass,volatile organic
<br /> unique to the sample,any in-Held measurements made, analysis(VOA)vials,with"Teflon"septa,are used as sample
<br /> sampling methodology,name(s)of on-site personnel,and any containers. i
<br /> other pertinent field observations also retarded on the Reid
<br /> excavation or baring log. Sop - 10
<br /> MEASURING L1GIUID LEVELS USING
<br /> Chain-of-custody forms are used to retard possession of the WATER .LEVEL METER OR INTERFACE
<br /> sample from time of collection to arrival at the laboratory. PROSE
<br /> During shipment,the person with custody of the samples will
<br /> relinquish them to the next persons by signing the chain-at- Field equipment used for liquid-leve(gauging typically includes
<br /> custody form(s)and noting the date and time. The sample- the measuring instrument(water-leve]meter or interface probe)
<br /> control officer at the laboratory will verify sample Integrity, and product bailer(s). The field kit also includes cleaning
<br /> correct preservation,confirm collection in the proper supplies(buckets,solution,spray battles,and deion¢ed water)
<br /> container(s),and ensure adequate volume for analysis. to be used in cleaning the equipment between wells. I
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<br /> Prior to measurement,the instrument G is lowered into the well
<br /> If these conditions are met,the samples will 6e assigned p ,
<br /> unique laboratory log numbers for idendrication throughout until it touches bottom. Using the previously established top-of-
<br /> analysis and reporting. The log numbers will be recorded an casing or tap-of-box(I.e.,wellhead vault)point,the probe cord
<br /> the chain-of-custody forms and in the legally-required log book (or halyard)is marked and a measuring tape(graduated in
<br /> maintained in the laboratory. The sample description,date hundredths of a foot)is used to determine the distance
<br /> received,client's name,and any other relevant information will between the probe end and the marking on the cord. This
<br /> also be recorded, measurement is then recorded on the liquid-level data sheet as
<br /> the"Measured Total Depth"of the well.
<br /> SOP - 5 When necessary in using the interface probe to measure liquid
<br /> LAMORATORY ANALYTICAL QUALITY levels,the probe is first electrically grounded to either the metal
<br /> ASSURANCE AND CONTROL stove pipe or another metal object nearby. When no ground is
<br /> available,reproducible measurements can be obtained by
<br /> In addition to routine instrument calibration,replicates,spikes, clipping the ground lead to the handle of the interface probe
<br /> blanks,spiked blanks,and certified reference materials are case. I
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<br /> routinely analyzed at method-specific frequencies to monitor The probe tip is then lowered into the well and submerged in
<br /> precision and hiss. Additional components of the laboratory
<br /> Quality AssurancelQuaiity Control program include: the groundwater. An oscillating(beeping)tone indicates the
<br /> probe is in water. The probe is slowly raised unfit either the
<br /> 1. Participation in state and federal laboratory oscillating tone ceases or becomes a steady tone. In either
<br /> accreditation/certification programs; case,this is the depth-to-water(OTW)indication and the DTW
<br /> measurement is made accordingly. The steady tone indicates
<br /> 2 Participation in bath U.S.EPA Performance floating liquid hydrocarbons(FLH). In this case,the probe Is
<br /> slowly raised until the steady tone ceases. This Is the depthdo-
<br /> laboratory perform nce and WP studies)and Inter- product(DTP)Indication and the DTP measurement is made
<br /> laboratory performance evaluation programs;
<br /> accordingly.
<br /> 3. 'Standard operating procedures describing routine j
<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-Control"!Corrective Action documentation OTW and DTP measurements are recorded on the liquid-level
<br /> data sheet. When FLH are indicated by the probe's response,
<br /> procedures;and, a product bailer Is lowered partially through the FLK-water
<br /> 5. MutWevel review of raw data and client reports. Interface to confirm the FLH on the water surface and as, t
<br /> further indication of the FLH thickness,particularly in cases
<br /> SOP - 7 where the FLH layer is quite thin. This measurement is
<br /> GROUNDWATER (SURGING AND
<br /> recorded on the data sheet as"FLH thickness'
<br /> SAMl3LING In order to avoid crass-contamination of wells during the liquid-
<br /> Prior to waken sampling,each well is purged by evacuating a level measurement process,wells are measured In the order of
<br /> "clean to'dirty"(where such information is available). In
<br /> minimum of three wetted weil-casing volumes of groundwater. addition,all measurement equipment is cleaned with solution
<br /> When required,purging will continue until either the discharge and tharoughty rinsed with deionized water before use,between 1
<br /> water temperature,conductivity,or pH stabilize,a maximum of measurements in respective weals,and at the completion of the
<br /> ten welledcasing volumes of groundwater have been day`s use.
<br /> recovered,or the well is bailed dry, w
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