|
APEX ENViROTECH, INC.
<br /> STANDARD OPERATING PROCEDURES
<br /> Quarterly Monitoring Reports
<br /> SOP - 4 When practical,the groundwater sample should be collected
<br /> SAMPLE IDENTIFICATION AND CHAIN- when the water level In the well recovers to at least so percent
<br /> OF-CUSTODY PROCEDURES of its static level
<br /> The sampling equipment consists of other a"fefton"bailer,
<br /> Sample Identification and chain-of-custody procedures ensure PVC bailer,or stainless steel bladder pump with a"Teflon"
<br /> sample integrity as well as document sample possession from bladder If the sampling system is dedicated to the well,then
<br /> the time of collection to ultimate disposal Each sample the bailer is usually'Teflon"but the bladder pump is PVC with
<br /> container submitted for analysts is labeled to Identify the jab a polypropylene bladder In general and depending on the
<br /> number,date,time of sample collection,a sample number intended laboratory analysts,40-mtiiiliter glass,volatile organic
<br /> unique to the sample,any in-field measurements made, analysts(VOA)vials,with"Teflon"septa,are used as sample
<br /> sampling methodology,name(s)of on-site personnel,and any containers
<br /> other pertinent field observations also recorded on the field
<br /> excavation or boring log SOP - 12
<br /> MEASURING LIgUID LEVELS USING
<br /> Chain-of-custody forms are used to record possession of WATER LEVEL METER OR INTERFACE
<br /> thesample from time of collection to arrival at the laboratory PROBE
<br /> During shipment,the person with custody of the samples will
<br /> relinquish them to the next person by signing the chain-of- Field equipment used for liquid-level gauging typically includes
<br /> custody form(s)and noting the date and time The sampie- the measuring instrument(water-level meter or interface probe)
<br /> control officer at the laboratory will verify sample Integrity, and product bailers) The field lat also includes cleaning
<br /> correct preservation,confirm collection in the proper supplies(buckets,solution,spray bottles,and deionized water)
<br /> container(s) and ensure adequate volume for analysis to be used in cleaning the equipment between wells
<br /> If these conditions are met,the samples will be assigned Prior to measurement,the instrument tip is lowered into the well
<br /> unique laboratory log numbers for Identification throughout until it touches bottom Using the previously established top-of-
<br /> analysts and reporting The log numbers will be recorded on casing or top-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 /> LABORATORY 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
<br /> routinely analyzed at method-specific frequencies to monitor The probe tip Is then lowered into the well and submerged in
<br /> precision and bias Additional components of the laboratory the groundwater An oscillating(beeping)tone indicates the
<br /> QualityAssurance/Quality Control program include probe is in water The probe is slowly raised until either the
<br /> 1 Participation In state and federal laboratory oscillating tone ceases or becomes a steady tone In either
<br /> accreditattoNcertifit.ation programs, case,this is the depth-to-water(DTW)Indication and the DTW
<br /> measurement is made accordingly The steady tone indicates
<br /> 2 Participation in both U S EPA Performance floating liquid hydrocarbons(FLM) In this case,the probe Is
<br /> Evaluation studies(WS and WP studies)and inter- slowly raised until the steady tone ceases This is the depth-to-
<br /> laboratory performance evaluation programs, product(DTP)indication and the DTP measurement is made
<br /> accordingly
<br /> 3 Standard operating procedures describing routine The process of lowering and raising the probe must be
<br /> and periodic instrument maintenance, repeated several times to ensure accurate measurements The
<br /> 4 "Out-of-Control'/Corrective Action documentation DTW and DTP measurements are recorded on the liquid-level
<br /> procedures,and, data sheet When FLH are indicated by the probe's response,
<br /> P a product bailer Is lowered partially through the FLH-water
<br /> 5 Multi-level review of raw date and client reports interface to confirm the FLH on the water surface and as
<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 PURGING AND recorded on the data sheet as"FLH thickness"
<br /> SAMPLING In order to avoid cross-contamination of wells during the liquid-
<br /> Prior to water
<br /> sampling,each well is purged by evacuating a level measurement process,wells are measured in the order of
<br /> in
<br /> minimum of three wetted well-casing volumes of groundwater "clean" ,all
<br /> (where such information is available} lu
<br /> When required,purging will continue until either the addition,all measurement equipment is cleaned with solution
<br /> When rgethred wetted wail-casing volumes it groundwater and thoroughly rinsed with deianized water before use,between
<br /> measurements in respective wells,and at the completion of the
<br /> When required,purging will continue until ether the discharge
<br /> water temperature,eonductrAy,or pH stabilize,a maximum of day's use
<br /> ten wetted-casing volumes of groundwater have been
<br /> recovered or the well Is baited dry
<br />
|