ARCHIVED REPORTS_XR0011486 - Laserfiche WebLink

Home Browse Search

APEX ENVIROTECH„ INC. STANDARD OPERATING PROCEDURES . Quarterly Monitoring Reports Sop ' 4 When practical,the groundwater sample should be collected SAMPLE lioENTiFiCAT1011i AND CHAIN- when the water level in the well recovers to at least 80 percent 0P-CUSTODY PROCEDURES of its static level Sample identification and chain-of-custody procedures ensure The sampling equipment consists of either a"Teflon"bailer, sample integrity as well as document sample possession from PVC bailer,or stainless steel bladder pump with a"Teflon" the time of collection to ultimate disposal Each sample bladder If the sampling system is dedicated to the well,then container submitted for anatysis is labeled to identify the jab the bailer is usually Teflon,"but the bladder pump is PVC with number,date,time of sample collection,a sample number a polypropylene bladder In general and depending on the Intended laboratory analysis, i glass,volatile organic unique to the sample,any in-field measurements made, analysis ) OA vials,with"Teflflonoe septa,are used as sample sampling methodology,name(s)of an-site personnel,and any containers Other pertinent field observations also recorded on the field excavation or boring log SOP 2 MEASURING LIQUID LEVELS USING Chain-of custody forms are used to record possession or the WATER LEVEL METER OR INTEFIPACE sample from time of collection to arrival at the laboratory PROSE During shipment,the person with custody of the samples will relinquish them to the next person by signing the chain-of- Field equipment used for liquid-level gauging typically includes custody form(s)and noting the date and time The sample- the measuring instrument(water level meter or interface probe) control officer at the laboratory will venfy sample Integrity, and product bailer(s) The field krt also includes cleaning correct preservation,confirm collection in the proper supplies(buckets,solution,spray bottles and deron¢ed water) container(s),and ensure adequate volume for analysis to be used in cleaning the equipment between wells If these conditions are met,the samples will be assigned Prior to measurement,the instrument tip is lowered into the well unique laboratory log numbers for identification throughout until it touches bottom Using the previously established tap-of- analysis and reporting The log numbers will be recorded on casing or top-of-box(i e,wellhead vault)point,the probe cord the chain-of-custody forms and In the legally-required log book (or halyard)is marked and a measuring tape(graduated in maintained in the laboratory The sample description,date hundredths of a foot)is used to determine the distance received,client s name,and any other relevant information will between the probe end and the marking on the cord This • also be recorded measurement is then recorded on the liquid-level data sheet as the"Measured Total Depth' of the well SOP " S When necessary in using the interface probe to measure liquid LA130RATORY ANALYTICAL gUAL1rr levels,the probe is first electrically grounded to either the metal ASSURANCE AND CONTROL stovepipe or another metal object nearby When no ground is available,reproducible measurements can be obtained by In addition to routine instrument calibration,replicates,spikes, clipping the ground lead to the handle of the interface probe blanks,spiked blanks,and certified reference materials are case routinely analyzed at method-specific frequencies to monitor precision and bras Additional components of the laboratory The probe tip is then lowered into the well and submerged in Duality Assurance/Quality Control program Include the groundwater An oscillating(beeping)tone indicates the probe is in water The probe is slowly raised until either the I Participation in state and federal laboratory oscillating tone ceases or becomes a steady tone In erther accreditation/certification programs, case,this is the depth-to-water(DTW)indication and the DTW measurement Is made accordingly The steady tone Indicates 2 Participation in both U S EPA Performance floating liquid hydrocarbons(FLH) In this case,the probe Is Evaluation studies(WS and WP studies)and Inter- slowly raised until the steady tone ceases This Is the depth-to- laboratory performance evaluation programs, product(DTP)Indication and the DTP measurement Is made accordingly 3 Standard operating procedures describing routine and periodic Instrument maintenance, The process of lowering and raising the probe must be repeated several times to ensure accurate measurements The 4 "Out-of-Control"/Corrective Action documentation DTW and DTP measurements are recorded on the liquid-level procedures,and, data sheet When FLH are indicated by the probes response, a product bailer Is lowered partially through the FLH-water 5 Mufti-level review of raw data and client reports Interrace to confirm the FLH on the water surface and as further indication of the FLH thickness,particularly In cases SOP .. 7 where the FLH layer Is quite thin This measurement Is GROUNDWATER PURGING AND recorded on the data sheet as"FLH thickness" SAMPLING In order to avoid cross-contamination of wells during the liquid- Prior to water sampling,each well Is purged by evacuabng a level measurement process,wells are measured In the order of minimum of three wetted well-casing volumes of groundwater "clean"to"dirty"(where such Information Is available) In When required,purging will continue until either the discharge addition,all measurement equipment Is cleaned with solution water temperature,conductivity,or pH stabilize,a maximum of and thoroughly rinsed with delon¢ed water before use,between ten wetted-casing volumes or groundwater have been measurements In respective walls,and at the completion of the recovered,or the well is bailed dry days use