SUMMARY OF RESULTS EPA METHOD 29 Determination of PM & 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 744 --- Tend Test End Time 1203 1634 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 Sampled, cu. ft. 176.55 189.33 193.76 186.55  H Avg. Delta H, in. H 2 0 1.50 1.68 1.81 1.66
T M Avg. Gas Meter Temp., Deg. F 61.6 75.1 68.3 68.3
 Dry Gas Meter Correction Factor 0.981 0.981 0.981 0.981 V STD Volume Sampled at Stand. Cond., cu. ft. 155.87 163.39 169.23 162.83 V STD M Volume Sampled at Stand. Cond., cu.m 4.41 4.63 4.79 4.61 V C Volume of Water Collected, ml 36.0 36.8 36.3 36.4 V WC Volume of Water Vapor at Std. Cond.,SCF 1.70 1.73 1.71 1.71 B WS Moisture Content of Gas Stream 0.011 0.010 0.010 0.010 P MV Percent Moisture in Stack 1.1 1.0 1.0 1.0 M FD Mole Fraction of Dry Gas 0.989 0.990 0.990 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 28.723 28.726 28.732 28.727 C p Pitot Tube Constant 0.84 0.84 0.84 0.84  PS Avg. Sqrt. Delta P, in. H20 0.213 0.217 0.231 0.221 T S Avg. Stack Temp., Deg. F 92.5 100.4 96.0 96.3 V S Avg. Stack Velocity, ft/sec 13.1 13.4 14.2 13.5 A Area Stack, ft 2 15.904 15.904 15.904 15.904 Q SD Gas Volume Flow, Dry Std. Cond. CFM 10,433 10,549 11,276 10,753 Q A Actual Gas Volume Flow, CFM 12,463 12,751 13,533 12,916SUMMARY OF RESULTS EPA METHOD 29 Determination of PM & Chromium Emissions Guardian Fiberglass Kingman, AZ Melter Baghouse Stack Q SW Gas Volume Flow, Wet Std. Cond., CFM 10,546 10,660 11,390 10,866 D n Sample Nozzle Diameter, inches 0.431 0.435 0.431 0.432 A n Area of Nozzle, ft 2 0.00101 0.00103 0.00101 0.00102 I Percent Isokinetic 97.8 99.5 98.2 98.5 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 Front-Half Analysis Particulate Matter Concentration and Emission Rates

mn Particulate Catch, mg 19.9 21.8 28.7 23.5 C s Particulate Concentration, gr/dscf 0.0020 0.0021 0.0026 0.0022 C a Particulate Concentration, mg/dscm 4.52 4.71 5.99 5.07 C AW Particulate Emission Rate, lbs/hr 0.177 0.186 0.253 0.205 E Particulate Emission Rate, lbs/TGP 0.069 0.073 0.100 0.08 Chromium (Cr +3 ) Concentration and Emission Rates

mn Chromium Catch, ug 3.74 3.17 3.20 3.37 C s Chromium Concentration, gr/dscf 3.70E-07 2.99E-07 2.92E-07 3.21E-07 C a Chromium Concentration, mg/dscm 0.00085 0.00069 0.00067 0.00073 C AW Chromium Emission Rate, lbs/hr 3.31E-05 2.71E-05 2.82E-05 2.95E-05 E Emission Rate, lbs/TGP 1.30E-05 1.07E-05 1.11E-05 1.16E-05SUMMARY OF RESULTS EPA METHOD 29 Determination of PM & Chromium Emissions Guardian Fiberglass Kingman, AZ Melter Baghouse Stack
Back-Half Analysis Chromium (Cr +3 ) Concentration and Emission Rates

mn Chromium Catch, ug 0.744 0.702 0.707 0.718 C s Chromium Concentration, gr/dscf 7.37E-08 6.63E-08 6.45E-08 6.81E-08 C a Chromium Concentration, mg/dsc m 0.00017 0.00015 0.00015 0.00016 C AW Chromium Emission Rate, lbs/hr 6.59E-06 5.99E-06 6.23E-06 6.27E-06 E Emission Rate, lbs/TGP 2.59E-06 2.36E-06 2.45E-06 2.47E-06 Total Chromium (Front & Back Half)

mn Chromium Catch, ug 4.48 3.87 3.91 4.09 C s Chromium Concentration, gr/dscf 4.44E-07 3.83E-07 3.87E-07 4.05E-07 C a Chromium Concentration, mg/dsc m 0.0010 0.0009 0.0009 0.0009 C AW Chromium Emission Rate, lbs/hr 3.97E-05 3.47E-05 3.74E-05 3.73E-05 E Emission Rate, lbs/TGP 1.56E-05 1.36E-05 1.47E-05 1.47E-05SUMMARY OF RESULTS EPA METHOD 29 Determination of PM & 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 = -------------------------------------------------- = 155.9 T M + 460 Volume of Water Vapor at Std. Cond.,SCF V WC = 0.04709 * V C = 1.70 Moisture Content of Gas Stream V WC B WS = ---------------------------------- = 0.011 V STD + V WC Percent Moisture in Stack 100 * V WC P MV= --------------------------- = 1.1 V STD + V WC Mole Fraction of Dry Gas 100 - P MV M FD = ----------------------- = 0.989 100 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 = 28.723 Avg. Stack Velocity, ft/sec (T S + 460) V S = 85.49 * C P *  PS * SQRT ------------------------- = 13.1 (P S * M s )SUMMARY OF RESULTS EPA METHOD 29 Determination of PM & 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 = --------------------------------------------------- = 10433 T S + 460 Actual Gas Volume Flow, CFM Q A= V S * A * 60 = 12463 Gas Volume Flow, Wet Std. Cond., CFM Q SW= Q SD * [1/(1-B WS )] = 10546 Area of Nozzle, ft 2 A n= ((D n/ 2) ^2 * 3.14159)/144 = 0.00101 Percent Isokinetic 0.0945 * (T S + 460) * V STD I = ----------------------------------------------- = 97.8  * V S * P S * (1 - B ws ) * A n Pollutant Concentration, gr/dscf (Particulate used) (At Standard Conditions) C S = 0.0154 * mn/ V STD = 1.98E-03 Pollutant Concentration, mg/dscm (Particulate used) (At Standard Conditions) C a= mn* 0.001 / V STD M = 4.5E+00 Pollutant Emission Rate, lb/hr (Particulate used) (At Standard Conditions) C AW= 0.00857 * C s * Q SD = 0.17660 Pollutant Emission Rate, lb/TGP (Particulate used) (At Standard Conditions) E= C AW/ PPRS = 6.9E-02 Standard Conditions 68 Deg. F, 29.92 in. Hg