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i A,PF..X FENV IRO ECHY PROCEOURINC■ ` STANOARO OPERATI Moni torincL Wells SOP - .4 SAMPLE IDENTIFICATION AND CHAIN- SOP - Z OF-CUSTODY PROCEDURES SOIL BORING SAMPLING ion and chain-cf-custodY ocedures ensure Ourinq drilling,sal samples lar chemic a�ssis andclengths ed Sample sample i�rtegrity ars yr_tl as document sample rpossession from in thin-walled brass tubes,of vacyT 9 ' e.g.,4 or fi inches fang by 2 inches outsdiameter). Three the time of collection to unimate.disposal. Each sample ( iare set in an (e seceded tubes,plus a spacer tube, container submitted for analysis is labeled to identify the job lour at 5 number 18-Inch long split-barrel sampler of the appropriate in unique to the sample.an1 y in-Reid e — measum measurements made. diameter, sampling methadolcgy name(s)a(an-site personnel,and any Where possible,the split-barrel sampler is driven is entice other pertinent field observations also recorded on the field length either hydraulically or using a 140-pound drop hammer, excavation or baring tog. The sampler is extracted from the bccehola and the brass tubes•containing the sail samples,ace removed. Upon removal Chaine from (rums are used to relaid possession of the from the sampler,the selected brass tubes are either sample ham time of collection to arrival at the laboratory. immediately trimmed and capped v. h aluminum fol or'Tedon' Ouring shipment,the person vrith custody of the samples vdll samples are extruded trom.the relinquish them to the next person by signing the chain-0f- sheets and plastic caps or the tubes and sealed within other appropriate,cleaned sample custody form(s)and noting the data a d time. The sample containers. The samples gee then hermetically sealed,labeled, control officer at the laboratorywill seri sample integrity. and refrigerated lar Ales ary.under strict chain-0ftustody,to correct preservation,confirm collection in the proper the analytical laboratory. These procedures minimize the eontainec(s),and ensure adequate volume(cc analysis. potential for cross-contamination and volatilization of volatile organic compounds(VOC)prior to chemical analysis. It these conditions are met,the samples"It be assigned unique laboratory log numbers for identification throughout One soil sample collected at each sampling interval is analyzed analysis and reporting. The log numbers vnll be recorded on . in the field using either a portable photaicnization detector the chain-al-custody!arms and a the legally-required log book (?lD),flame ionization detector,organic vapor analyzer, maintained in the laboratory. The sample description,data catalytic gas detector,or an explosfineter. The purpose of this received•client's name,and any other relevant information will catalytic analysis is to tor.cc an ley determine the presence ac also be recorded. fieabsence of hydrocarbons,and the samples to be analyzed at the laboratory. The soil sample is sealed in either a brass tube, glass jar,or plastic bag to allow for some volatilization of VOC. sop - S The Pl0 is then used to measure the concentrations of LABORATORY ANALYTICAL q UAL}TY hydrocarbons within the containers's headspaee. The data Is ASSURANCE AND CONTROL recorded on bcth field notes and the baring logs at the depth corresponding to the sampling point In addition to routine instrument calibration,replicates•spikes, blanks,spiked blanta,and certified reference materials are Ocher soil samples are collected to document the sal andlor routinely analyzed at method-specific frequencies to monitor stcatigraphic profile beneath the project ste,and estimate the, Quanee/Ovalaboratory [ity Control program include: relative permeability of the subsurface materials. All drilling Quality Ass�ar and sampling equipment are either steam cleaned or washed In solution and doubly rinsed in deionized water prior to use at 1. Participation[n state and federal laboratory each site and between bacehales to minimize the pctential foe accreditation/certification programs: cross-contamination. Z Participation in both U.S.EPA Performance Evaluation studies(WS and WP studies)and Inter- In the event the sal samples cannot be submitted to the laboratory performance evaluation programs: analytical laboratory an the same day they ace collected(e.g.. due to weekends or holidays),the samples ace tempecafily 3 Standard operating procedures describing routine stored untl the first opportunity foe submittal either on Ice in a and periodic instrument maintenance: cooler,such as when in the Reid•or in a refrigerator at Apmes office. 4. -Cut-of-Control-/Corrective Action documentation procedures:and, SOP - 3 5, Muni-level review at raw data and client reports. SOIL CLASSIFICATION Sail samples are plassided according to the Unified Sol Classincation Systam. Repcesentatise pecdcns of the samples SOP - 6 may be submitted,under strict chairrol-custody,to an HO LLOWSTEM AUGER MONITORING anatyticat laboratory far further examination and verification of )FEL LOP EKi TION AND the In-field classification and analysis of sail mechanical andlor petrophysical properties. The soil typ°,ace indicated on[cgs of e3lter excavations or borings together unfit deaths Bareheles for maraccirg v.alts are drilled using a truck- corresponding to the sampling poirts and other pertinent mounted,hclicti•-stem auger drill rig. The borehole diameter will be a minimum of 4 inches larger than the outside diameter information. of the casing when installing welt screen. The holtav- tam _.. .... _;,4.�n.n m,l intarruction of drilling white permiMfng