ARCHIVED REPORTS_XR0011498 - Laserfiche WebLink

Home Browse Search

' APEX ENVIROTECH, INC. STANDARD OPERATING PROCEDURES Soil Borings 50 P-4 SOP-11 SAMPLE IDENTIFICATION AND CHAIN- ' SOIL BORING 3AMPLiNCr OF-CUSTODY PROCEDURES � Sample identification and chain-of-custody procedures ensure During drilling,sod samples for chemical analysis are collected sample integrity as well as document sample possession from in thin-walled brass tubes,of varying diameters and lengths the time of collection to ulbrnate disposal Each sample (e g 4 or 6 inches long by 2 inches outside diameter) Three container submitted for analysis is labeled to identify the lob or four of the selected tubes, plus a spacer tube,are set in an number date time of sample collection,a sample number 18-inch long split-barrel sampler of the appropriate inside- unique to the sample,any in-field measurements made diameter sampling methodology name(s)of on-site personnel and any Wpossible the s irt-barrel sampler�s driven+its entire other pertinent field observations also recorded on the fiat! Where P p P excavation or boring log length either hydraulically or using a 440-pound drop hammer The sampler m extracted from the borehole and the brass Chan-of-custody forms are used to record possession of the tubes,containing the soil samples,are removed Upon removal sample from time of collection to arrival at the laboratory from the sampler,the selected brass tubes are ether During shipment,the person with custody of the samples will Immediately trimmed and capped with aluminum fad or"Teflon" relinquish them to the next person by signing the chain-of- sheets and plastic caps or the samples are extruded from the custody form(s)and noting the date and time The sample- tubes and sealed within other appropriate,cleaned sample control officer at the laboratory will verity sample Integrity containers The samples are then hermetically sealed labeled correct preservation confirm collection In the proper and refrigerated for delivery,under strict chain-of-custody to container(s) and ensure adequate volume for analysis the analytical laboratory These procedures minimize the ' potential for cross-contamination and volatilization of volatile If these conditions are met the samples will be assigned organic compounds(VO C)prior to chemical analysis unique laboratory log numbers for Identification throughout analysis and reporting The log numbers well be recorded on One soli sample collected at each sampling Interval Is analyzed in the field using ether a portable phctoionmabon detector the ntchain-of-custodydi farms and a the pie description fag book ' (PID),flame ionization detector organic vapor analyzer maintained in the laboratory The sample description date received,client's name and any other relevant information well catalytic gas detector,or an explosimeter The purpose of this also be recorded field analysis is to qualitatively determine the presence or absence of hydrocarbons,and the samples to be analyzed at SOP-S the laboratory The soil sample Is sealed in either a brass tube, LABORATORY ANALYTICAL QUALITY glass lar,or plastic bag to allow for some volatilization of VOC ASSURANCE AND CONTROL The PID is then used to measure the concentrations of hydrocarbons within the containers's headspace The data is In addition to routine instrument calibration replicates spikes ' recorded on both field notes and the boring logs at the depth blanks spiked blanks and certified reference materials are corresponding to the sampling point routinely analyzed at method-specific frequencies to monitor Other soil samples are collected to document the soil and/or precision and bias Additional components of the laboratory stratigraphic profile beneath the project site and estimate the Duality Assurance/Quaity Control program include ' relative permeability of the subsurface materials All drilling i Participation In state and federal laboratory and sampling equipment are either steam cleaned or washed In accredtationlcertification programs, solution and doubly rinsed In deionized water prior to use at each site and between boreholes to minimize the potential for 2 participation in both U S EPA Performance ' cross-contamination Evaluation studies(WS and WP studies)and inter- In the event the soil samples cannot be submitted to the laboratory performance evaluation programs analytical laboratory on the same day they are collected(e g, 3 Standard operating procedures describing routine due to weekends or holidays) the samples are temporarily and periodic Instrument maintenance, stored until the first opportunity for submittal ether on ice in a cooler,such as when In the field,or in a refrigerator at Apex's 4 "Out-of-Control"Morrecbve Action documentation office procedures and, ' SOP-3 5 Multi-level review of raw data and client reports SOIL CLASSIFICATION ' Sod samples are classified according to the Unified Sod Classification System Representative portions of the samples may be submitted under strict chain-of-custody,to an analybcal laboratory for further examination and verification of the in-field classification and analysis of soil mechanical and/or petrophysical properties The soil types are indicated on logs 6 of ether excavations or borings together with depths corresponding to the sampling points and other pertinent information 'r