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SIERRA <br /> FOOTHILL LABORATORY REPORT <br /> 823 S.HWY.49 <br /> P.O. BOX 1268 • JACKSON,CA 95642 <br /> (209)223-2800 <br /> 10/20/92 375691 Continued Page 3 <br /> Sample # Description Result Units Dup/Std Value Spk Conc. Percent Time Date By <br /> PH <br /> Standard 7.0 unit 7.0 100 1245 10/05/92 GK <br /> Standard 4.0 unit 4.0 100 1245 10/05/92 GK <br /> 375694 Duplicate 7.4 unit 7.4 100 1245 10/05/92 GK <br /> Nitrogen, Ammonia-N <br /> Standard 13.7 mg/L 13.1 104 0845 10/07/92 GK <br /> 375694 Duplicate <0.1 mg/L <0.1 100 0845 10/07/92 GK <br /> Calcium, Titrimetric <br /> Blank <0.05 mg/L 1330 10/07/92 GK <br /> Standard 104 mg/L 112 107 1330 10/07/92 GK <br /> 375691 Duplicate 79 mg/L 76 104 1330 10/07/92 GK <br /> Hardness <br /> Blank <1 mg/L 1350 10/07/92 GK <br /> Standard 487 mg/L 419 115 1350 10/07/92 GK <br /> 375694 Duplicate 720 mg/L 710 101 1350 10/07/92 GK <br /> Tony iqurae, Owner/Analyst <br /> I <br /> SIERRA FOOTHILL LABORATORY IS CERTIFIED BY THE STATE OF CALIFORNIA DEPT. HEALTH SERVICES <br /> Cno noINV VJC WAToo 1NAQ7I=1MATC0 uA7Ac1nnI IC WAYTF TFRTINR I-IA7ARrl0l 11 WARTF RIOASSAY <br />