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APEX ENVIROTECH, INC.
<br /> STANDARD OPERATING PROCEDURES
<br /> SOP-1 volatile organic compounds prior to chemical analysis.
<br /> SOIL BORING SAMPLING
<br /> In the event the soil samples cannot be submitted to the analytical
<br /> During drilling,soil samples for chemical analysis are collected in thin- laboratory on the same day they are collected(e.g.,due to weekends or
<br /> walled brass tubes,of varying diameters and lengths(e.g.,4 or 6 holidays),the samples are temporarily stored until the first opportunity
<br /> inches long by 2 inches outside diameter). Three or four of the for submittal either on ice in a cooler,such as when in the field,or in a
<br /> selected tubes,plus a spacer tube,are set in an 1 8-inch long split- refrigerator at Apex's office.
<br /> barrel sampler of the appropriate inside-diameter.
<br /> SOP-3
<br /> Where possible,the split-barrel sampler is driven its entire length either SOIL CLASSIFICATION
<br /> hydraulically or using a 140-pound drop hammer. The sampler is
<br /> extracted from the borehole and the brass tubes,containing the soil Soil samples are classified according to the Unified Soil Classification
<br /> samples,are removed. Upon removal from the sampler,the selected System. Representative portions of the samples may be submitted,
<br /> brass tubes are either immediately trimmed and capped with aluminum under strict chain-of-custody,to an analytical laboratory for further
<br /> foil or"Teflon"sheets and plastic caps or the samples are extruded examination and verification of the in-field classification and analysis of
<br /> from the tubes and sealed within other appropriate,cleaned sample soil mechanical and/or petrophysical properties. The soil types are
<br /> containers. The samples are then hermetically sealed,labeled,and indicated on logs of either excavations or borings together with depths
<br /> refrigerated for delivery,under strict chain-of-custody,to the analytical corresponding to the sampling points and other pertinent information.
<br /> laboratory. These procedures minimize the potential for cross-
<br /> contamination and volatilization of volatile organic compounds(VOC) SOP-4
<br /> prior to chemical analysis. SAMPLE IDENTIFICATION AND CHAIN-OF-CUSTODY
<br /> PROCEDURES
<br /> One soil sample collected at each sampling interval is analyzed in the
<br /> field using either a portable photoionization detector(PID),flame Sample identification and chain-of-custody procedures ensure sample
<br /> ionization detector,organic vapor analyzer,catalytic gas detector,or an integrity as well as document sample possession from the time of
<br /> explosimeter. The purpose of this field analysis is to qualitatively collection to ultimate disposal. Each sample container submitted for
<br /> determine the presence or absence of hydrocarbons,and the samples analysis is labeled to identify the job number,date,time of sample
<br /> to be analyzed at the laboratory. The soil sample is sealed in either a collection,a sample number unique to the sample,any in-field
<br /> brass tube,glass jar,or plastic bag to allow for some volatilization of measurements made,sampling methodology,name(s)of on-site
<br /> VOC. The PID is then used to measure the concentrations of personnel,and any other pertinent field observations also recorded on
<br /> hydrocarbons within the containers's headspace. The data is recorded the field excavation or boring log.
<br /> on both field notes and the boring logs at the depth corresponding to
<br /> the sampling point. Chain-of-custody forms are used to record possession of the sample
<br /> from time of collection to arrival at the laboratory. During shipment,the
<br /> Other soil samples are collected to document the soil and/or person with custody of the samples will relinquish them to the next
<br /> stratigraphic profile beneath the project site,and estimate the relative person by signing the chain-of-custody form(s)and noting the date and
<br /> permeability of the subsurface materials. All drilling and sampling time. The sample-control officer at the laboratory will verify sample
<br /> equipment are either steam cleaned or washed in solution and doubly integrity,correct preservation,confirm collection in the proper
<br /> rinsed In deionized water prior to use at each site and between container(s),and ensure adequate volume for analysis.
<br /> boreholes to minimize the potential for cross-contamination.
<br /> If these conditions are met,the samples will be assigned unique
<br /> In the event the soil samples cannot be submitted to the analytical laboratory log numbers for identification throughout analysis and
<br /> laboratory on the same day they are collected(e.g.,due to weekends or reporting. The log numbers will be recorded on the chain-of-custody
<br /> holidays),the samples are temporarily stored until the first opportunity forms and in the legally-required log book maintained in the laboratory.
<br /> for submittal either on ice in a cooler,such as when in the field,or in a The sample description,date received,client's name,and any other
<br /> refrigerator at Apex's office. relevant information will also be recorded.
<br /> SOP-2
<br /> SOIL EXCAVATION AND SAMPLING SOP-6
<br /> LABORATORY ANALYTICAL QUALITY ASSURANCE AND
<br /> Excavation and subsequent soil sampling is performed under the CONTROL
<br /> direction of a registered geologist or civil engineer. To reduce the
<br /> potential for cross-contamination,all excavation equipment is either In addition to routine instrument calibration,replicates,spikes,blanks,
<br /> steam cleaned or washed prior to use and between excavations. Soil spiked blanks,and certified reference materials are routinely analyzed
<br /> samples for chemical analysis are collected in cleaned,thin-walled at method-specific frequencies to monitor precision and bias.
<br /> brass tubes of varying diameters and lengths(e.g.,6 inches long by 2 Additional components of the laboratory Quality Assurance/Quality
<br /> inches outside diameter)or other appropriate cleaned sample Control program include:
<br /> container. If used,one tube may be set in a 2-inch inside diameter,
<br /> hand-driven sampler. To reduce the potential for cross-contamination 1. Participation in state and federal laboratory
<br /> between samples,the sampler is washed in a solution and doubly accreditation/certification programs;
<br /> rinsed between each sampling event.
<br /> 2. Participation in both U.S.EPA Performance Evaluation
<br /> Upon recovery,a portion of the soil sample is sealed for later screening studies(WS and WP studies)and inter-laboratory
<br /> with either a portable photoionization detector,flame ionization detector, performance evaluation programs;
<br /> or an explosimeter. Another portion of the sample is used for
<br /> description of the excavated materials. A third portion of the sample is 3. Standard operating procedures describing routine and
<br /> hermetically sealed,labeled and refrigerated for delivery,under strict periodic instrument maintenance;
<br /> chain-of-custody,to the analytical laboratory. These procedures
<br /> minimize the potential for cross-contamination and volatilization of
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