SUMMARY OF RESULTS EPA METHOD SW-846 0061 Determination of Hexavalent & Total Chromium Emissions Guardian Fiberglass Kingman, AZ Melter Baghouse Stack Run Number 1 2 3 Avg Date: 02/07/12 02/07/12 02/08/12 ---  Net Time of Test, minutes 240 240 240 --- Tstart Test Start Time 751 1230 743 --- Tend Test End Time 1203 1633 1157 --- P b ar Barometric Pressure, in. Hg 26.49 26.55 26.52 26.52 P g Static Pressure, in. Hg 0.001 0.001 0.001 0.001 P S Stack Pressure, Absolute, in. Hg 26.491 26.551 26.521 26.521 V M Actual Meter Volume Sample d, cu. ft. 186.25 177.73 195.90 186.63  H Avg. Delta H, in. H 2 0 1.62 1.47 1.82 1.64
T M Avg. Gas Meter Temp., Deg. F 63.708 76.79 70.3 70.2
 Dry Gas Meter Correction Factor 0.969 0.969 0.969 0.969 V STD Volume Sampled at Stand. Cond., cu. ft. 161.82 150.93 168.38 160.38 V STD M Volume Sampled at Stand. Cond., cu.m 4.58 4.27 4.77 4.54 V C Volume of Water Collected, ml 36.4 30.1 32.3 32.9 V WC Volume of Water Vapor at Std. Cond.,SCF 1.71 1.42 1.52 1.55 B WS Moisture Content of Gas Stream 0.010 0.009 0.009 0.010 P MV Percent Moisture in Stack 1.0 0.9 0.9 1.0 M FD Mole Fraction of Dry Gas 0.990 0.991 0.991 0.990 M d Mole. Wt. Stack Gas, Dry Basis, lb/lb mole 29 29 29 29 M S Mole. Wt. Stack Gas, Wet Basis, lb/lb mol e 28.726 28.739 28.743 28.736 C p Pitot Tube Constant 0.84 0.84 0.84 0.84  PS Avg. Sqrt. Delta P, in. H20 0.216 0.200 0.228 0.215 T S Avg. Stack Temp., Deg. F 90.5 97.6 93.7 93.9 V S Avg. Stack Velocity, ft/sec 13.2 12.3 14.0 13.2 A Area Stack, ft 2 15.904 15.904 15.904 15.904 Q SD Gas Volume Flow, Dry Std. Cond. CFM 10,595 9,746 11,168 10,503SUMMARY OF RESULTS EPA METHOD SW-846 0061 Determination of Hexavalent & Total Chromium Emissions Guardian Fiberglass Kingman, AZ Melter Baghouse Stack Q A Actual Gas Volume Flow, CFM 12,609 11,708 13,331 12,549 Q SW Gas Volume Flow, Wet Std. Cond., CFM 10,707 9,838 11,269 10,604 D n Sample Nozzle Diameter, inches 0.434 0.439 0.434 0.436 A n Area of Nozzle, ft 2 0.00103 0.00105 0.00103 0.00104 I Percent Isokinetic 98.6 97.7 97.3 97.9 PPR Process Pull Rate, lbs/hr 5,093 5,082 5,078 5,084 PPRS Process Pull Rate, tons/hr 2.55 2.54 2.54 2.54 Total Chromium Concentration and Emission Rates

m n Chromium Catch, ug 0.83 2.04 1.86 1.58 C s Chromium Concentration, gr/dscf 7.91E-08 2.09E-07 1.71E-07 1.53E-07 C a Chromium Concentration, mg/dscm 0.00018 0.00048 0.00039 0.00035 C AW Chromium Emission Rate, lbs/hr 7.2E-06 1.7E-05 1.6E-05 1.4E-05 E Emission Rate, lbs/TGP 2.8E-06 6.9E-06 6.4E-06 5.4E-06 Hexavalent Chromium (Cr +6 ) Concentration and Emission Rates

m n Cr + 6 Catch, ug 2.31 1.98 2.09 2.13 C s Cr + 6 Concentration, gr/dscf 2.20E-07 2.02E-07 1.92E-07 2.05E-07 C a Cr +6 C oncentrat i on, mg/d scm 0.00050 0.00046 0.00044 0.00047 C AW Cr + 6 Emission Rate, lbs/hr 2.0E-05 1.7E-05 1.8E-05 1.84E-05 E Cr + 6 Emission Rate, lbs/TGP 7.9E-06 6.7E-06 7.2E-06 7.2E-06SUMMARY OF RESULTS EPA METHOD SW-846 0061 Determination of Hexavalent & Total Chromium Emissions Guardian Fiberglass Kingman, AZ Melter Baghouse Stack Example Calculations Run 1 Due to rounding, hand calculated values may vary slightly Stack Pressure, Absolute, in. Hg P S = P bar + P g= 26.491 Volume Sampled at Stand. Cond., cu. ft. 17.647 * V M* Y * (P b ar +  H / 13.6) V STD = -------------------------------------------------- = 161.8 T M+ 460 Volume of Water Vapor at Std. Cond.,SCF V WC = 0.04709 * V C = 1.71 Moisture Content of Gas Stream V WC B WS = ---------------------------------- = 0.010 V STD + V WC Percent Moisture in Stack 100 * V WC P MV= --------------------------- = 1.0 V STD + V WC Mole Fraction of Dry Gas 100 - P MV M FD = ----------------------- = 0.990 100 Mole. Wt. Stack Gas, Dry Basis, lb/lb mole M d= 0.44 * %CO 2 + 0.32 * %O 2 + 0.28 * (100 - %CO 2 - %O 2 ) = 28.840 Mole. Wt. Stack Gas, Wet Basis, lb/lb mole M S = M d* (1 - B ws ) + 18.0 * B ws = 28.726 Avg. Stack Velocity, ft/sec (T S + 460) V S = 85.49 * C P *  PS * SQRT ------------------------- = 13.2 (P S * M s )SUMMARY OF RESULTS EPA METHOD SW-846 0061 Determination of Hexavalent & Total Chromium Emissions Guardian Fiberglass Kingman, AZ Melter Baghouse Stack Gas Volume Flow, Dry Std. Cond. CFM 1058.82 * V S * A * P S * (1 - B ws ) Q SD = --------------------------------------------------- = 10595 T S + 460 Actual Gas Volume Flow, CFM Q A= V S * A * 60 = 12609 Gas Volume Flow, Wet Std. Cond., CFM Q SW= Q SD * [1/(1-B WS )] = 10707 Area of Nozzle, ft 2 A n= ((D n/ 2) ^2 * 3.14159)/144 = 0.00103 Percent Isokinetic 0.0945 * (T S + 460) * V STD I = ----------------------------------------------- = 98.6  * V S * P S * (1 - B ws ) * A n Pollutant Concentration, gr/dscf (Particulate used) (At Standard Conditions) C S = 0.0154 * m n/ V STD = #REF! Pollutant Concentration, mg/dscm (Particulate used) (At Standard Conditions) C a= m n* 0.001 / V STD M = #REF! Pollutant Emission Rate, lb/hr (Particulate used) (At Standard Conditions) C AW = 0.00857 * C s * Q SD = #REF! Pollutant Emission Rate, lb/TGP (Particulate used) (At Standard Conditions) E= C AW / PPRS = #REF! Standard Conditions 68 Deg. F, 29.92 in. Hg