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Section 7 <br /> ONSPTE Environmental Laboratories Inc Revtsioa 0 <br /> ' Quality Assurance Plan February 15, 1996 <br /> Page 4 of 4 <br /> ' For example, if the spiked result was 6 1 and the expected result was <br /> 5 75 then 6 115 75 * 100 = 106 % Recovery <br /> ' 7 2 3 Completeness is a measure of the valid data obtained from a measurement <br /> system expressed as a percentage of the amount of data that should have been <br /> collected Completeness is of particular importance to multi-year intensive <br /> ' monitoring programs <br /> %Completeness = Number of Valid Data PoLnts Acgcured , 100 <br /> ' Total Number afData Points Planned <br /> ' For example, a client submits 10 samples for a suite of 25 tests The client is <br /> anticipating 250 results with all acceptable QC to be subrrutted in the report <br /> (250 results planned) The laboratory was able to provide 243 results with <br /> acceptable QC Therefore, (243/250)*100 = 97% Complete <br /> The goal for completeness is 95% for aqueous samples and 90% for non- <br /> aqueous samples <br /> 73 ONSITE offers a wide varietyof analytical procedures ranging from screening to CLP <br /> - <br /> like <br /> ' like deltverables Depending upon the type of procedure required, ONSITE follows <br /> EPA's QC requirements for each level with Level I providing screening only and <br /> Level W providing CLP like documentation ONSITE requires that all methods, <br /> including screening methods, be validated for before use This validation of each <br /> method include the following <br /> > Demonstration that the procedure is applicable to the analyte(s) of interest <br /> ' > MDL studies <br /> > Precision and Accuracy Study, if applicable <br /> > Proficiency in the procedure <br /> ' > An approved Standard Operating Procedure (SOP) <br /> 1 <br /> 1 <br /> Word 6 0%oeisec7 doe <br />