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co~'~ <br />CORE LABORATORIES <br />Q U A L I T Y A S S U R A N C E M E T NOD S <br />R E F E R E N C E S A N D N O T E S <br />Report Date: 11/23/97 <br />Core Laboratories - Gulf States - Houston, T% • HE <br />Lore Laboratories - Houston, TX • HP <br />Core Laboratories - Indianapolis, IN ' IN <br />Lore Laboratories - Lake Charles, LA ' LC <br />Lore Laboratories - Long Beach, CA ` LB <br />Core laboratories - Tampa, fL • TP <br />Core Leboratori es - Valparaiso, IN • VP <br />Other Subcontract Laboratories ` X% <br />E%PLANATION OF DATA QUALIFIERS - ORGANIC PARAMETERS <br />U - This qualifier indicates that the analyte uas analyzed <br />for but not detected. <br />J - This qualifier indicates that the value is an estimate. <br />It is used when a compound is determined to to present <br />based on the mass spectral data but at a concentration <br />less than the practical quanti Cation limit of the <br />method. <br />E - This qualifier indicates that a sample result is an <br />estimate because the concentration exceeded the upper <br />calibration range of the instrument. <br />EXPLANATION OF DATA gUALIFIERS - METALS S INORGANIC PARAMETERS <br />U - This qualifier indicates that the analyte was analyzed <br />for but not detected. <br />B - This qualifier indicates that the analyte was detected <br />at a level below the reporting limit but greater than <br />or equal to the instrument detection limit. <br />E%PLANATION OF DATA FLAGS - ALL PARAMETERS <br />B - This flag indicates that an analyte is present in <br />the method blank as well as in the sample. The client <br />should consider this when evaluating the data. <br />E - This flag indicates the reported value is estimated due <br />to sample matrix interference. <br />W - This flag indicates that a post-digestion spike for <br />GFAA analysis is outside quality control limits. <br />% - This flag iMicat es that a surrogate recovery is <br />outside quality control limits. <br />Y - This flag indicates a spike or spike duplicate recovery <br />is outside quality control limits. <br />Z - This flag indicates a relative percent difference for <br />a spike and spike duplicate is outside quality <br />control limits. <br />- This flag indicates a relative percent difference for <br />a duplicate analysis is outside quality control <br />limits. <br />- This flag indicates a percent recovery for a standard <br />is outside quality control limits. <br />Page 3 <br />..U...a w.+.~i ~K o.a r~sm.. ~i c.,.. ~m.~eM co., ~noaa~. x-...~. ,,,...,e .n,.,n~. o ~.>m..a,~~o~ ..o,a ~, Mo..a m, . ~.o..~..o..,~. a.m,m...,,..~ o ~,. o.oo,..m,. ~ ~., oo. a. ~. < < o .o,»,~ o <br />.moa.. ~m~se~~..m..~,aoo...«ouv.,r~..,K~.o,..,-,.....~~,.our..<o~.~r,.a„ro~~v.,.~.«~.,~m.... ~m.~~~, ~~o. ~.~oe.~.a ....o.o o~, .~„.. ~~.-~„~. .ow .~~~c~.,.~o-,o . <br />