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~P~~ <br />CORE LABORATORIES <br />CI UAL 1'T Y A S S U R A N C E N E T H D D S <br />R E F E R E N C E S A N D~ N O T E S <br />Report Date: 07/22/98 <br />Core Laboratories - Gulf States - Houston, TX * HE <br />Core Laboratories - Nouston, TX * NP <br />Core Laboratories - Indianapolis, IN * IN <br />Core Laboratories - Lake Charles, LA * LL <br />Core Laboratories - Long Beach, CA * LB <br />Core Laboratories - Tanya, FL * TP <br />Lore Laboratories - Valparaiso, IN • VP <br />Other Subcontract Laboratories * XX <br />EXPLANATION 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 con¢wund is determined to be present <br />based on the mass spectral data but at a concentration <br />less than the practical quantitate on limit of the <br />method. <br />E - This qualifier indicates that a sanple result is an <br />estimate because the concentration exceeded the upper <br />calibration range of the instrument. <br />EXPLANp7I0N OF DATA QUALIFIERS - METALS 8 INORGANIC PARANETERS <br />U - This qualifier indicates that the analyte was analyzed <br />for but not detected. <br />8 - 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 />EXPLANATION 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 />N - This flag irxii cotes that a post-digestion spike for <br />GFAA analysis is outside quality control limits. <br />X - This flag indicates that a surrogate recovery is <br />outside quality control Limits. <br />Y - This flag indicates a spike ar spike duplicate recovery <br />is outside quality control limits. <br />2 - 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 />~..wn~.~ ~r.,. e~ s „~.ro.vie..v.i...a ~,, ,~. ,.m, .. e...c.oo..,,am.um.<m.,....m.~ w w w.. io .~m...~,,... w tea.,,. ~. w. ~ ~., o... m.e. m..~.r+y ~.,,,.,. ao~.o M.ow.e.. <br />..o~..a,.o...~i w>, wo~i m ~. ~.m.~ ~. ~.m.~o,.,. ,o....,. mne p..mn s .aa..i,.,...o~. s.w.a a .,., m....a.wew a.........,. ~ io,~. ~...... ~. oo...w a oenrr~ a <br />.~...... _......__ _~....._....+~.,.~.. ~.....,......+...u...as, . ,,..~..,..a ~ w......„,..,.~w.... TM. ~MO~ w.. ~~ ~. ~m~~a.....a.>.. d~ «~~ ~..,~i.a.mo,.~ m w.. uoo-.~o-~ <br />