HCLTESTRESULTSUSINGMETHOD321AUGUST6,2010NewMethod321TestResultsforHCl,ppmvd@7%O2CompanyNationalCement CapitolCement CapitolCement*LafargeAshGrove*IllinoisCementAlamoCementLoneStar LoneStar* HolcimHolcimHolcim*LafargeLafargeLehighLehighLehigh Holcim CalPortland Holcim HolcimPlantRagland,AL SanAntonio,TXSanAntonio,TXHarleyville,SCLouisville,NELaSalle,ILSanAntonio,TXPryor,OK Pryor,OKAda,OKDevilsSlide,UTSteGenevieve,MOAlpena,MIRavena,NYTehachapi,CALeeds,ALRedding,CA Catskill,NY Mojave,CA Portland,CO Midlothian,TXKilnPH/PCWetPH/PCPH/PCPHorPCPHPHorPCDry,kiln3 Dry,kiln1&2 WetPH/PCPH/PCDry,K23Wet,K1PH/PCPHPH Wet PH/PC,K1 PH/PC PH/PC,K2Runs18.121.03<0.3413.3127.4018.480.5412.9618.501.662.81<0.2332.9926.25.249.144.24 8.92 11.251.18<0.4225.731.72<0.3413.9825.3314.490.6611.5516.101.344.11<0.2131.4323.43.524.942.29 6.65 10.801.67<0.4235.191.72<0.342.5021.3714.330.7810.1216.501.252.73<0.2327.9129.11.364.572.39 11.77 9.781.48<0.43414.73<0.3430.001.360.2520.307.592.381.5320.0942.0596.880.6<0.4654.27<0.346.811.540.2523.608.224.141.1324.1619.69108.030.79<0.476<0.3419.231.460.2711.905.443.6227.8118.5395.460.87<0.4170.7881.1291.24AVG7.611.490.3414.3024.708.610.4615.0717.031.425.151.5530.7826.232.5615.1214.87 9.11 55.37 1.10 0.44STDEV4.230.400.009.673.067.980.235.501.290.222.361.492.612.851.7810.1815.51 2.57 49.22 0.42 0.02Rank132*NOTES:CapitolCement,wetkiln‐Runresultswereppmwet.TocalculateHCl,ppmvd@7%O2,moistureandO2concentrationwereestimated.CapitolCement,PH/PCkiln‐Allrunswerenondetects;detectionlimitwas0.2ppmwet.TocalculateHCl,ppmvd@7%O2,moistureandO2wereestimated.LoneStar‐Kiln1&2exhauststhroughcommonstackHolcim,SteGenevieve‐Runs1‐3reportedasbelowdetectionlimit.AshGrove,Louisville‐TocalculateHCl,ppmvd@7%O2,moistureandO2wereestimated.5/14/2010cHClTestResults,MajorSources,UsingM321PlantLocationKilnTypeTestDateMajor/areasource(perNEI)MillStatusRunHClppmwetmoisture%HClppmdryO2%HClppmdat7%O2NotesNationalCementRagland,ALPH/PC5/21/2002MajorOn15.4214.926.37108.12SandersEngineeringandAnalyticalServices,HydrogenChloride5/21/2002On23.7915.674.49105.73EmissionTestReport(V1),NationalCement,Koppers5/21/2002On33.4415.484.07105.19MainStack,RaglandAlabama,May21‐24,2002.5/24/2002Off110.8114.2912.61914.735/24/2002Off23.3116.453.9684.27CapitolCementSanAntonio,TXWet5/9/2002MajorNA10.60260.81101.03EmissionMonitoringInc,NESHAPApplicabilityTesting5/9/2002NA21.00261.35101.72atCapitolCementCo.,2002.5/9/2002NA31.00261.35101.72MoistureandO2estimatedAlkalibypass5/9/2002NA10.20260.27100.34Allnondetect;detectionlimit0.2ppmvwet5/9/2002NA20.20260.27100.34MoistureandO2estimated5/9/2002NA30.20260.27100.34PH/PC5/10/2002On10.20260.27100.34Allnondetect;detectionlimit0.2ppmvwet5/10/2002On20.20260.27100.34MoistureandO2estimated5/10/2002On30.20260.27100.345/10/2002Off10.20260.27100.345/10/2002Off20.20260.27100.345/10/2002Off30.20260.27100.34LafargeHarleyville,SCPH/PC10/26/2004MajorOn17.73159.0911.413.31URS,ComplianceTestReport,LafargeBuildingMaterials,Inc10/26/2004On28.1914.39.5611.413.98Harleyville,SC,October25‐Nov.1,2004.10/26/2004On31.4415.61.7111.42.5010/25/2004Off124.4116.229.137.430.0011/1/2004Off25.5116.76.617.46.8111/1/2004Off315.5816.618.687.419.23AshGroveLouisville,NEPHorPC?5/25/2005Majorunknown115.902621.491027.40PrismAnalyticalTechnologies,Inc.,AshGroveCementCo,5/26/2005unknown214.702619.861025.33Louisville,Nebraska,GaseousHydrogenChlorideTesting,5/26/2005unknown312.402616.761021.37May25and26,2005.MoistureandO2estimatedIllinoisCementLaSalle,ILPH1/8/2002Major*Off112.906.6913.8210.518.48*Thecoverlettertothetestreportstatestheyareanareasource.1/8/2002Off211.207.3712.099.314.49EmissionMonitoringInc,NESHAPApplicabilityTestingforthePortland1/8/2002Off312.407.4513.407.914.33CementNESHAP,IllinoisCementCo.,LaSalle,IL,February17,2002.1/9/2002On41.0010.571.129.51.361/9/2002On51.1011.551.249.71.541/9/2002On61.2011.451.3681.46AlamoCementSanAntonio,TXPH/PC4/10/2001MajorOff10.5017.990.615.30.54CleanAirEngineering,ReportonHydrogenChlorideTesting.Performed4/10/2001Off20.6018.920.745.30.66for:AlamoCementCo.KilnStack,SanAntonioCementPlant,May24,20014/10/2001Off30.7019.960.875.40.784/11/2001On10.2015.220.247.80.254/11/2001On20.2015.430.247.80.254/11/2001On30.2016.360.248.70.27LoneStarIndustriesInPryor,OKDry,kiln32/24/2010MajorNA17.804.98.2012.112.96Receivedon3/21/20102/24/2010NA26.504.66.8112.711.552/24/2010NA35.904.76.1912.410.12Dry,kiln1&29/28/1999NA118.50Kiln1&2exhaustthroughcommonstack9/28/1999NA216.109/28/1999NA316.50Dry,kiln39/30/1999NA120.309/30/1999NA223.609/30/1999NA311.90HolcimAda,OKWet3/12/2010MajorNA11.663/12/2010NA21.343/12/2010NA31.25HolcimDevilsSlide,UTPH/PC2/24/2010MajorOn12.812/24/2010On24.112/24/2010On32.732/25/2010Off17.592/25/2010Off28.222/25/2010Off35.44HolcimSteGenevieve,MOPH/PC2/14/2010MajorBothOn1[<0.23]belowdetectionlimit2/14/2010BothOn2[<0.21]belowdetectionlimit2/14/2010BothOn3[<0.23]belowdetectionlimit2/15/2010BothOff12.382/15/2010BothOff24.142/15/2010BothOff33.622/15/20101On/1Off10.782/15/20101On/1Off21.122/15/20101On/1Off31.24LafargeAlpena,MIDry,K233/25/2010MajorNA132.993/25/2010NA231.433/25/2010NA327.91LafargeRavena,NYWet,Kiln13/12/2010NA126.22kilnsexhaustto1stack;onekilnwasoperatingduringtesting;testsinkilnbreaching3/12/2010NA223.43/12/2010NA329.1LehighTehachapi,CAPH/PC3/25/2010MajorOn15.243/27/2010On23.523/27/2010On31.363/25/2010Off11.533/25/2010Off21.13LehighLeeds,ALPH3/17/2010MajorOn19.143/17/2010On24.943/17/2010On34.573/18/2010Off120.093/18/2010Off224.163/18/2010Off327.81LehighRedding,CAPH3/16/2010MajorOn14.243/16/2010On22.293/16/2010On32.393/17/2010Off142.053/17/2010Off219.693/17/2010Off318.53HolcimCatskill,NYWet4/9/2010MajorNA124.28.92(formerlySt.Lawrence)4/9/2010NA226.76.654/9/2010NA322.711.77CaliforniaPortlandMojave,CAPH/PC3/30/2010MajorOn16.38.26.8612.4211.253/30/2010On26.38.26.8612.0710.803/30/2010On35.88.26.3211.929.783/31/2010Off157.34.459.9412.396.883/31/2010Off266.84.569.9511.9108.033/31/2010Off368.14.171.0110.5695.46HolcimPortland,CO3/31/2010MajorOn113.41.183/31/2010On213.31.673/31/2010On311.81.483/30/2010Off114.50.63/30/2010Off2150.793/31/2010Off314.10.87HolcimMidlothian,TXPH/PC,Kiln24/30/2010MajorOn118.3<0.424/30/2010On217.9<0.424/30/2010On317.9<0.434/30/2010Off117.2<0.464/30/2010Off217<0.474/30/2010Off317.9<0.41*Coverlettertotestreportsaystheyarenotmajor.NA=notapplicablend=nondetectableMay14,2010

# Company Plant Kiln Avg

(ppmd@7%O2)

Capitol Cement San Antonio, TX PH/PC 0.34

Holcim Midlothian, TX PH/PC, K2 0.44

Alamo Cement San Antonio, TX PH or PC 0.46

Holcim Portland, CO PH/PC 1.10

Holcim Ada, OK Wet 1.42

Capitol Cement San Antonio, TX Wet 1.49

Holcim Ste Genevieve,MO PH/PC 1.55

Lehigh Tehachapi, CA PH/PC 2.56

Holcim Devils Slide, UT PH/PC 5.15

National Cement Ragland, A L PH/PC 7.61

Illinois Cement La Salle, IL PH 8.61

Holcim Catskill, NY Wet 9.11

Lafarge Harleyville, SC PH/PC 14.30

Lehigh Redding, CA PH 14.87

Lone Star Pryor, OK Dry, kiln3 15.07

Lehigh Leeds, AL PH 15.12

Lone Star Pryor, OK Dry, kiln 1&2 17.03

Ash Grove Louisville, NE PH or PC 24.70

Lafarge Ravena,NY Wet, K1 26.23

Lafarge Alpena, MI Dry, K23 30.78

CalPortland Mojave, CA PH/PC, K1 55.37

Avg of top 3 0.41

Av of all 12.06

5/14/2010