1998-12-31_GENERAL DOCUMENTS - M1974052 (5)

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Table 2 Analytical Results Fly Ash Disposal Project Weld County,Colorado CGRS Project No. 1-135-2755 Total Metals Analytical Results m /L Sample pH Ex Al Sb As Be Be B Cd Cr Co Cu Fe Pb Mn Ni Se Ag TI V Zn LI Hg Recycled Asphalt 7 1 12 NO NO 0.089 ND NO NO NO NO NO 0.88 NO 0.026 NO ND NO NO 0.01 0.011 0.009 NO 2 26 NA NA 0.39 NO 0.18 NA 'AA NO NA 28 NA 0076 NA NA NA NA 0.1 0.36 0.03 NA Class F Silo Ash with 5 1 0.10 NO NO 0.98 NO 610 NO 0.10 ND NO NO NO NO NO NO ND NO ND NO 0.19 ND Gypsum (C Silo) 2 0.13 NA NA 0.94 IIA ND NA 0.06 r1A NA I.A NA IlA NA IlA NA NA NA NA 0.13 NA Bottom Ash 5 1 6.40 NO NO 0.36 NO 1.20 NO ND NO 0.03 4.20 NO 0.05 NO NO NO ND 0.02 0.06 0.03 ND 2 0.37 NA NA 0.06 NA 0.56 r1A NA NA NO 0.20 ND NO NA NA NA NA NO ND 0.01 ND Cherokee Silo Ash Yd 5 1 44.00 NOPND 2.90 0.0036 51.00 NO 013 NO 0.04 12 00 NO 005 NO 0.27 NO ND 0.06 0.06 0.77 0.0001 2 510 NA 1.70 NA 15.00 NA NO NA NO NO NA NO NA ND NA NA 0.03 NO 0.22 NO Cherokee 4 Fly Ash 5 1 0.61 NO 0.77 NO 5100 NO 0.21 NO NO 0.11 NO NO NO 021 NO NO NO NO 0.77 NO with Sodium 2 4.10 rlA 1.10 rIA 22.00 NA 0.05 NA NA 0.28 NA NA NA 013 NA NA NA NA 0.24 NA Recycled Concrete 5 1 1.30 ND 0.45 NO 0.08 NO 0.06 NO 0.04 0.56 NO 0.01 NO NO NO NO NO NO 0.02 NO 2 2.30 NA 0.23 NA NO NA 0.08 NA 0.02 0.09 IIA NO NA HA NA NA NA NA 0.02 NA Recycled Asphalt 5 1 120.00 ND 1.60 001 0.09 NO 013 005 0.33 140.00 0.33 3.90 0.10 NO NO NO 0.26 1.30 0.12 gND2 8700 HA IIA 1.00 0.01 0.08 NA 0.07 0.03 0.22 9000 019 2.30 062 NA NA NA 0.17 0.88 0.08State Water Quality 5.0 0.006 0.050 2.0 0.004 0.750 0.005 0.100 0.050 .20/1.0 0.30/5.0 0.050 0.050 0.200 0.050 0.050 0.002 0.100 2.0 2.50Standards AP P P P A P P A A/S S/A P S P P P P A A A Notes: ND=Not Detected NA=Not Analyzed Ex=Extraction • mg/L=milligrams per liter A-Agricultural Standard P-Primary Drinking Water Standard S-Secondary Drinking Water Standard Page 2 of 4