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}l <br /> 1W <br /> ALTA <br /> Apnl 11, 2002 <br /> Alta Project I.D.: 21989 <br /> Mr Tun Cuellar <br /> Advanced GeoEnvironmental,Inc <br /> 837 Shaw Road <br /> Stockton, CA 95215 <br /> Dear Mr Cuellar, <br /> Enclosed are the results for the one effluent sample received at Alta Analytical Laboratory on March 29 <br /> 2002 under your "Flag City Chevron" Project This sample was extracted and analyzed using EPA <br /> Method 1613for tetra-through-octa chlorinted dioxins and furans A standard turnaround time was <br /> provided for this work <br /> Clean-up recovery standard(CRS) was not added to the method blank and CPR associated with these <br /> samples The CRS is used by the laboratory to help identify analytical problems when Internal Standard <br /> . (IS) recoveries are low, all,IS recoveries reported in this protect are within method limits At your <br /> request, sample results for 2,3,7,8-substituted congeners that are less than Alta's method detection limit <br /> (MDL) have been reported as "not detected" (ND), and the MDL value has been reported as the <br /> detection limit The affected results have been flagged with an asterisk Homologue totals, which do not <br /> have MDLs and are not included in the TEQ calculation, are reported to the sample detection limit <br /> The following report consists of a Sample Inventory (Section 1), Analytical Results (Section II) and the <br /> Appendix, which contains the chain-of-custody, a list of data qualifiers and abbreviations, Alta's current <br /> certifications, and copies of the raw data(if requested) <br /> Alta Analytical Laboratory is committed to serving you effectively If you require additional <br /> information, please contact me at 916-933-1640 or by email at mmaier@a altalab com Thank you for <br /> choosing Alta as part of your analytical support team <br /> Sincerely, <br /> Martha M Maier <br /> HRMS Services Director <br /> K 4Crp�^ <br /> t Ilia 4nalSucal Lahorarnr ecru/res that the rcporr ner�rn nrect_r all Ott.rcguucments serjoith In,VEL ICfr)r rhose <br /> v apphr-able to st rnerho& 1l rr reporr should nor he rel}r odor ed a.xcLpt in larll ii uhout rhe v?Won ey)pnn4 l aJ ILf'A <br /> c r <br /> Alta Analytical Laboratory Inc. <br /> 5070 Robert d Mathews Parkway <br /> Fl Dorado Hills, CA 95762 <br /> Project 21989 FAX (916) 933-0940 Page 1 of 12 <br /> (916) 933-164E0 <br />