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COMMERCIAL TESTING & ENGINEERING CO. <br /> GFNEiIAI OFFlCES:1919 SOUTH HIGHLAND AVE.,SUITE 2168,LOMBARD,ILUNOIS fi0148•TEL 708-9539300 FAX 7069519306 <br /> Imes <br /> r�la G Member of the SGS Group(SociAtd(3dndrels do Surveillance) <br /> PLEASE ADDRESS ALL CORRESPONDENCE TO: <br /> September 22, 1997 4665 PARIS STREET <br /> SURE B.200 <br /> ' DENVER,CO 80239 <br /> PUBLIC SERVICE COMPANY OF CO. TEL:(303)373-4772 <br /> 1500 W. Hampden Ave. <br /> FAX:(303)373-4791 <br /> Building 5H Sample identification by <br /> Englewood CO 80110 PUBLIC SERVICE OF COLORADO <br /> SAMPLE ID: ARAPAHOE BOTTOM ASH PRB <br /> Kind of sample ASH <br /> Sample taken by PUBLIC SERVICE OF COLORADO <br /> Date received August 18, 1997 <br /> Analysis report no. 72-365096 _ <br /> PARAMETER RESULTS PARAMETER RESULTS <br /> Aluminum, Al 8.14 t Magnesium, Mg 2 .84 it <br /> Antimony, Sb <4 ug/g Manganese, Mn 120 ug/g <br /> Arsenic, As 12 ug/g Mercury, Hg 0.53 ug/g <br /> Barium, Ba 4000 ug/g Molybdenum, Mo <20 ug/g <br /> Beryllium, Be 3 ug/g Nickel, Ni 24 ug/g <br /> Boron, B 460 ug/g Phosphorus, P 3040 ug/g <br /> Cadmium, Cd <2 ug/g Potassium, K 0.33 •s <br /> Calcium, Ca 14 .96 •s Selenium, Se <4 ug/g <br /> Chromium, Cr 42 ug/g Silicon, Si 15.25 •s <br /> Cobalt, Cc 13 ug/g Silver, Ag 3 ug/g <br /> Copper, Cu 110 ug/g Sodium, Na 1 .17 •r <br /> Iron, Fe 3 .88 •s Strontium, Sr 2060 ug/g <br /> Lead, Pb 26 ug/g Titanium, Ti 5540 ug/g <br /> Lithium, Li 28 ug/g Vanadium, V 130 ug/g <br /> Zinc, Zn 57 ug/g <br /> Procedure: The sample was prepared and analyzed by approved EPA and <br /> methods designated on the client submittal sheet. <br /> Results: Results are reported as indicated on an as received basis. <br /> d' <br /> Respectfully submitted, ' <br /> COMMERCIAL TESTING d ENGINEERING CO. = <br /> Denver Laboratory OVER 40 BRANCH LABORATORIES STRATEGICALLY LOCATED IN PRINCIPAL COAL MINING AREAS.TIDEWATER AND GREAT LAKES PORTS,AND RIVER LOADING FACILITIES <br /> 465 <br />