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APEX ENVIRCTECH, INC.
<br /> STANDARD OPERATING PROCEDURES
<br /> Corrective Action Plan
<br /> SOP . 4
<br /> SAMPLE IDENTIFICATION AND CHAIN- When practical,the groundwater sample should be collected
<br /> OF-CUSTODY PROCEDURES when the water level in the well recovers to a least 8o
<br /> Percent of its static level.
<br /> Sample identification and chain-of-custody procedures
<br /> ensure sample integrity as well as document sample The sampling equipment consists of either a"Teflon"baiter,
<br /> Possession from the time of collection to ultimate disposal. PVC bailer,or stainless steel bladder pump with a"Teflon"
<br /> Each sample container submitted for analysis is labeled to bladder. If the sampling system is dedicated to the well,then
<br /> identity the job number,date,time of sample collection,a the bailer is usually"Teflon",but the bladder pump is PVC
<br /> sample number unique to the sample,any in-field with a polypropylene bladder. In general and depending on
<br /> measurements made,sampling methodology,name(s)of on- the intended laboratory analysis,40-milliliter glass,volatile
<br /> site personnel,and any other pertinent field observations organic analysis(VOA)vials,with"Teflon"septa,are used
<br /> also recorded on the field excavation or boring log, as sample containers.
<br /> Chain-of-custody forms are used to record possession of the The groundwater sample is decanted into each VOA vial in
<br /> sample from time of collection to arrival at the laboratory. such a manner that there is no meniscus at the top of the
<br /> During shipment,the person with custody of the samples will vial. A cap is quickly secured to the top of the vial. The vial
<br /> relinquish them to the next person by signing the chain-of- is then'inverted and gently lapped to see if air bubbles are
<br /> custody form(s)and noting the date and time, The sample- present. If none are present,the vial is labeled and
<br /> control officer at the laboratory will verify sample integrity, refrigerated for delivery,under strict chain-of-custody,to the
<br /> correct preservation,confirm collection in the proper analytical laboratory. Label information should include a
<br /> container(s),and ensure adequate volume for analysis, unique sample identification number,job identification
<br /> number,date,time,type of analysis requested,and the
<br /> If these conditions are met,the samples will be assigned samplers name.
<br /> unique laboratory log numbers for identification throughout
<br /> analysis and reporting. The log numbers will be recorded on For quality control purposes,a duplicated water sample is
<br /> the chain-of-custody forms and in the legally-required log collected from each well. This sample may also be analyzed
<br /> book maintained in the laboratory. The sample description, or put on hold at the laboratory. When required,a trip blank,
<br /> date received,client's name,and any other relevant prepared at the laboratory,is placed in the transport cooler.
<br /> information will also be recorded. It is labeled similar to the well samples,remains in the cooler
<br /> during transport,and is analyzed by the laboratory along with
<br /> ���rrr...•��� SOP - S the groundwater samples. In addition,a field blank may be
<br /> LABORATORY ANALYTICAL QUALrTY prepared in the field when sampling equipment is not
<br />` ASSURANCE AND CONTROL dedicated. The field blank is prepared after a pump or bailer
<br /> has been either steam cleaned or properly washed,prior to
<br /> In addition to routine instrument calibration,replicates, use in the next well,and is analyzed along with the other
<br /> spikes,blanks,spiked blanks,and certified reference samples. The field blank analysis demonstrates the
<br /> i materials are routinely analyzed at method-specific effectiveness of the in-field cleaning procedures to prevent
<br /> frequencies to monitor precision and bias. Additional cross-contamination.
<br /> components of the laboratory Quality Assurance/Quality
<br /> Control program include: To minimize the potential for cross-contamination between
<br /> wells,all well development and water sampling equipment
<br /> 1. Participation in state and federal laboratory not dedicated to a well is either steam cleaned or properly
<br /> accreditation/certification programs; washed between use. As a secondary precautionary t
<br /> measure,welts are sampled in order of least to highest
<br /> 2. Participation in both U.S. EPA Performance concentrations as established by available previous
<br /> Evaluation studies(W5 and WP studies)and analytical data,
<br /> interlaboratory performance evaluation programs;
<br /> In the event the water samples cannot be submitted to the
<br /> f 3. Standard operating procedures describing routine analytical laboratory on the same day they are collected(e.g.
<br /> and periodic instrument maintenance; due to weekends or holidays),the samples are temporarily
<br /> II stored until the first opportunity for submittal either on water
<br /> i 4. "Out-of-Control'/Corrective Action documentation in a cooler,such as when in the field,or in refrigerator at
<br /> procedures;anAd, P.ex's office.
<br /> 5. Multi-level review of raw data and client reports. SOP - 1 2
<br /> MEASURING LIQUID LEVELS USING
<br /> SOP - 7 WATER LEVEL METER OR INTERFACE
<br /> GROUNDWATER PURGING AND PROBE
<br /> SAMPLING
<br /> Field equipment used for liquid-level gauging typically
<br /> Prior to water sampling,each well is purged by evacuating a includes the measuring instrument(water-level meter or
<br /> minimum of three wetted well-casing volumes of interface probe)and product bailer(s). The field kit also
<br /> groundwater. When required,purging will continue until includes cleaning supplies(buckets,solution,spray bottles,
<br /> either the discharge water temperature,conductivity,or PH and deionized water)to be used in cleaning the equipment
<br /> stabilize,a maximum of ten wetted-casing volumes of wells.
<br /> groundwater have been recovered,or the well is balled dry.
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