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VAGL ~~ <br />CORE LABORATORIES <br />Q U A L I T Y A S S U R ANC E M E T HOD S <br />R E F E R E N C E S A N D N O T E S <br />Report Dale: 09/16/98 <br />Core Laboratories - Gulf States - Houston, TX • HE <br />Core Laboratories - Houston, TX • HP <br />Core Laboratories - Indianapolis, IN • IN <br />Core Laboratories - Lake Charles, LA • LC <br />Core Laboratories - Long Beach, LA • LB <br />Lore Laboratories - Tampa, FL • TP <br />Lore Laboratories - Valparaiso, 1N • VP <br />Other Subcontract Laboratories • XX <br />E%PLANAT ION OF DATA OUALI FIERS - ORGANIC PARAMETERS <br />U - This qualifier indicates that the analyte was 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 be present <br />based on the mass spectral data but at a concentration <br />less than the practical quanti tali on 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 QUALIFIERS - METALS 8 INORGANIC PARAMETERS <br />U - This qualifier indicates that the analyte was analyzed <br />for but not detected. <br />B - This qualifier indicates that [he analyte was detected <br />at a level bel ou the reporting limit but greater than <br />or equal to the instrument detection limit. <br />EXPLANATION OF DATA FLAGS - ALL PARAMETERS <br />B - This flag indicates [ha[ 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 irdicat es 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 indicates 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 />COn2 rol 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 b <br />+.. a+m~ ~.,.~. oa~~,> m~.u ~. ~a„ ~w ~ ~....~-..,. ~,.., ~~,.~~.m,~„~:. ~,~.,,, W~o.~ a. ~~. ~,.~~ ~a ..~...,~„„,.ro «~~m~„v.,.,~n .~, v...... m.a= ~...~..,.......~,. a~"o., a ~~.~..~, ~ •.. <br />..o..~.., m.,.,. ib ~A~ rwv .,. n m. ~.~.~s.. co.. ~oo..,~a.~n ro»... mrv., a ., .. d .o.A.~„~~~ ..ate. o mn+a a :n .m. ,~.o ~.,.ay. a.m.,m, ~. v.o ~~. o-~<~~... roa, or ,..:.. o ~,vi..~..,.,. m <br />.. a. w. ~m~ o,~rc, m~.u nom...- o..,,a .,.o..,,? ..~..,r~ o.~...mi.. ~..~ d,.,m wo a ..+~...~,,.roi.m.. m.,«~.,.+roi o. „~m„w .,, ..oa o, .,, wn ...w,. N. -.i~~.oo a.. of w,. um..~~. <br />