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_ - s...•a. �F r .oi�-..z+p.:y,� �... ...,_...«..��.� .,,• y�7et ay.{:.w.;�.-... _ •s.'r�.:a;�s t�'�`�ai:•�-�.`.:,+!.+Ne-►F ,4s;Ptc, <br /> r <br /> At this time, a unique number will be assigned to the <br /> sample.. This number will be recorded in the bound 'sample book <br /> and will be placed onto the sample label. This number -can used '. <br /> as a cross reference number to identify the sample and track its'.. <br /> location. <br /> A chain-of-custody form will be initiated -prier to any <br /> sample leaving the site. This form will be completed and <br /> • accompanied the sample to its destination. The chain-of-custody <br /> firm establishes the person responsible for the sample at any <br /> given time. This form provided the following information: . <br /> o Date and time of each transaction. <br /> o Signature of person accepting the sample(s) . <br /> o Signature of person relinquishing the samples(s) . <br /> o Analysis to be preformed. <br /> o Generator's name. <br /> o Phone number of the project manager. <br /> o Sample identification number. <br /> FIELD QUALITY ASSURANCE <br /> The most important aspect of a valid sample and analytical <br /> program is the QA/QC plan. QA/QC will be implemented during <br /> sampling through rigid protocols and continued thiroughout the <br /> analysis of each sample. The QA/QC plan ensured the validity of <br /> each sample collected and the result reported. <br /> The role of quality control in an OHM sampling program fell <br /> to the trained sampling technologist, chemist, or engineer <br /> assigned to the project. It will be his duty to fully comply <br /> with the sampling plan. Inclusive in this- plan will be an <br /> additional 10 percent replicate, trip bunk, and equipment blank <br /> samples necessary to assure quality in any sampling plan. <br /> The following QC samples will be collected and analyzed: <br /> o Trip Blanks - Trip blanks will be introduced by the <br /> sampling QA/QC officer during field collection of <br /> samples. These will be transported and analyzed as <br /> typical samples. Constituents found in these samples <br /> may indicate cross contamination. Such cross- <br /> contamination more likely occurs when shipping volatile <br /> or liquid samples, but rarely occurs when shipping <br /> solid-matrix- samples with immobile constituents. <br /> o Egnjinment Blanks - Equipment blanks are samples taken <br /> by rinsing decontamination sample equipment with <br /> deionized water. The water will be then analyzed. <br /> Constituents found in these samples may indicate cross <br /> contamination due to ineffective decontamination <br /> procedures. <br /> 261 <br />