Tank or Tank Farm where source air samples showed chemicals of potiential concern above 50% of the occupational exposure limit. All the chemicals detected can potientlally have chronic health effects. Air Conc Agent Survey Date Farm Locatiom CAS Air Conc UOM %OEL OEL N-Nitrosodimethylamine 62-75-9 ppb 702-AZ Stack 0.469 156.3 0.3 4/7/2009 N-Nitrosodimethylamine 62-75-9 0.556 ppb 185.3 Stack 0.3 4/9/2009 702-AZ Al05 Ammonia 7664-41-7 52.26 ppm 209 25 8/18/2005 A FARM Al05 Mercury 0.016 mg/m3 0.025 66 7439-97-6 8/18/2005 A FARM Al03 N-Nitrosodimethylamine 62-75-9 0.763 ppb 254.4 0.3 8/11/2005 A FARM FARM A106 N-Nitrosodimethylamine 62-75-9 0.23 ppb 76.8 A 0.3 8/18/2005 ppm A104 Nitrous Oxide 10024-97-2 60 SO 8/18/2005 A FARM 30 Al05 Nitrous Oxide 10024-97-2 120 ppm 240 50 8/18/2005 A FARM Nitrous Oxide ppm A106 10024-97-2 33 66 50 8/18/2005 A FARM Ammonia 416.3 25 7/21/2005 AN FARM Primary Exhauster 7664-41-7 104.079 ppm Ammonia ppm AN FARM Primary Exhauster 7664-41-7 133.608 534.4 25 3/27/2006 Ammonia 7664-41-7 186.2 25 8/23/2006 AN FARM Primary Exhauster 46.548 ppm Ammonia 7664-41-7 462.2 25 10/18/2006 AN FARM Primary Exhauster 115.539 ppm Ammonia 7664-41-7 112.1 25 28.03 ppm 3/30/2007 AN FARM Primary Exhauster Mercury 7439-97-6 0.021 mg/m3 0.025 85.3 8/23/2006 AN FARM Primary Exhauster N-Nitrosodimethylamine 62-75-9 41.599 ppb 13866.3 0.3 7/21/2005 AN FARM Primary Exhauster N-Nitrosodimethylamine 62-75-9 12.725 ppb 4241.8 0.3 3/27/2006 AN FARM Primary Exhauster N-Nitrosodimethylamine 62-75-9 4880.1 14.64 ppb 0.3 8/23/2006 AN FARM Primary Exhauster N-Nitrosodimethylamine 2702 0.3 62-75-9 8.106 ppb 3/30/2007 AN FARM Primary Exhauster 243.8 N-Nitrosomethylethylamine 10595-95-6 0.731 ppb 0.3 7/21/2005 AN FARM Primary Exhauster N-Nitrosomethylethylamine 0.462 ppb 153.9 0.3 10595-95-6 3/27/2006 AN FARM Primary Exhauster N-Nitrosomethylethylamine 10595-95-6 0.294 ppb 98.1 0.3 8/23/2006 AN FARM Primary Exhauster N-Nitrosomethylethylamine 0.256 ppb 85.4 0.3 3/30/2007 AN FARM Primary Exhauster 10595-95-6 n-Nitrosomorpholine 65.4 0.6 59-89-2 0.393 ppb 7/21/2005 AN FARM Primary Exhauster n-Nitrosomorpholine 59-89-2 55.5 0.6 0.333 ppb 3/30/2007 AN FARM Primary Exhauster Nitrous Oxide 10024-97-2 26.14 ppm 52.3 SO 8/23/2006 AN FARM Primary Exhauster 55.3 Nitrous 9xide 10024-97-2 27.64 ppm SO 8/23/2006 AN FARM Primary Exhauster x Page 1 of 6 OELUOM ppb ppb ppm mg/m3 ppb ppb ppm ppm ppm ppm ppm ppm ppm ppm mg/m3 ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppm ppm Tank or Tank Farm where source air samples showed chemicals of potiential concern above 50% of the occupational exposure limit. All the chemicals detected can potientially have chronic health effects. 1/11/2007 2/13/2007 2/15/2007 9/6/2006 9/£/2006 3/24/2008 7/6/2005 4/4/2006 8/27/2006 12/2/2006 12/2/2006 7/7/2005 Farm APFARM APFARM AP FARM APFARM APFARM APFARM AP FARM APFARM APFARM APFARM APFARM AP FARM APFARM AWFARM AWFARM AWFARM AWFARM AWFARM AWFARM Location Primary Exhauster Primary Exhauster Primary Exhauster Primary Exhauster Primary Exhauster Primary Exhauster Primary Exhauster Primary Exhauster Inside Farm Primary Exhauster Primary Exhauster Primary Exhauster AP108 PRIMARY EXHAUSTER PRIMARY EXHAUSTER PRIMARY EXHAUSTER PRIMARY EXHAUSTER PRIMARY EXHAUSTER PRIMARY EXHAUSTER Agent Ammonia Ammonia Ammonia N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosomethylethylamine Nitrous Oxide Nitrous Oxide Ammonia Ammonia Ammonia Ammonia Mercury N-Nitrosodimethylamine CAS Air Cone 7664-41-7 90.354 7664-41-7 119.255 7664-41-7 92.719 62-75-9 11.193 62-75-9 0.304 62-75-9 4.024 8.334 62-75-9 62-75-9 1.002 62-75-9 0.305 62-75-9 0.742 10595-95-6 0.227 25.17 10024-97-2 250 10024-97-2 7664-41-7 48.238 7664-41-7 160.965 7664-41-7 91.32 7664-41-7 122.875 0.032 7439-97-6 62-75-9 0.151 4/4/2006 12/2/2006 4/7/2009 4/7/2009 4/9/2009 4/7/2009 4/9/2009 4/7/2009 AWFARM AWFARM AYFARM AY FARM AYFARM AYFARM AY FARM AZFARM PRIMARY EXHAUSTER PRIMA.RY EXHAUSTER AYl02 AY102 AY102 AY102 AY102 AZ101 N-Nitrosodimethylamine N-Nitrosodimethylamine Ammonia Furan Furan N-Nitrosodimethylamine N-Nitrosodimethylamine Ammonia 62-75-9 62-75-9 7664-41-7 110-00-9 110-00-9 62-75-9 62-75-9 7664-41-7 Survey Date 6/23/2005 5/2/2006 9/6/2006 4/26/2005 6/23/2005 5/2/2006 9/6/2006 Page 2of6 0.158 0.16 32.43 2.74 2.013 0.697 0.426 32.901 Air Cone UOM %OEL OEl OELUOM ppm 361.4 25 ppm ppm 25 ppm 477 25 ppm ppm 370.9 ppb 3731.1 0.3 ppb ppb 101.3 0.3 ppb ppb 1341.2 0.3 ppb ppb 2778.1 0.3 ppb ppb 334 0.3 ppb ppb 101.6 0.3 ppb ppb 247.4 0.3 ppb ppb 75.5 0.3 ppb ppm 50.3 50 ppm ppm 500 50 ppm ppm 193 25 ppm ppm 643.9 25 ppm ppm 365.3 25 ppm ppm 491.5 25 ppm mg/m3 126.7 0.025 mg/m3 ppb 50.2 0.3 ppb ppb 52.7 0.3 ppb ppb 53.4 0.3 ppb 25 ppm ppm 129.7 ppb 274 1 ppb ppb 201.3 1 ppb ppb 232.5 0.3 ppb ppb 142.1 0.3 ppb ppm 25 ppm 131.6 Tank or Tank Farm where source air samples showed chemicals of potiential concern above 500/0 of the occupational exposure limit. All the chemicals detected can potientially have chronic health effects. Air Cone Survey Date Farm location Agent CAS Air Cone UOM %OEl OEl Mercury 7439-97-6 0.068 mg/m3 4/7/2009 AlFARM Al101 274 0.025 Mercury 7439-97-6 473.2 4/9/2009 AZ FARM AlI0l 0.118 mg/m3 0.025 Ammonia 25 7664-41-7 77.624 ppm 310.5 3/3/2008 BX FARM BX104 Ammonia 7664-41-7 26.37 ppm 105.5 25 3/3/2008 BX FARM BXll0 Furan 1 2/29/2008 BX FARM BX104 110-00-9 8.542 ppb 854.2 Mercury 7439-97-6 3/3/2008 BX FARM BX104 0.028 mg/m3 111.7 0.025 Mercury 7439-97-6 0.02 80.8 0.025 3/3/2008 BX FARM BX106 mg/m3 N-Nitrosodimethylamine 62-75-9 ppb 0.3 0.2 66.5 2/26/2008 BX FARM BX103 BY108 l,3-Butadiene 1 106-99-0 3.383 ppm 338.3 4/8/2008 BY FARM BY104 N-Nitrosodimethylamine 62-75-9 0.675 ppb 224.9 0.3 6/29/2009 BY FARM CI03 2-Propenyl acetate ppb 800 SO 10/2S/2005 CFARM 591-87-7 400 ppb C103 2-Propenylacetate 591-87-7 320 640 SO 10/2S/2005 CFARM C103 2-Propenyl acetate 591-87-7 ppb 920 SO 460 10/25/2005 CFARM 2-Propenyl acetate ppb 840 C103 SO 591-87-7 420 10/2S/2005 CFARM C103 3-Buten-l-one 78-94-4 0.23 ppm 0.2 10nS/2005 CFARM 115 3-Buten-l-one ppm C103 10/2S/2005 CFARM 78-94-4 0.16 80 0.2 65 0.2 CI03 3-Buten-l-one 78-94-4 ppm 10/25/2005 CFARM 0.13 ppm C103 3-Buten-l-one 78-94-4 60 0.12 0.2 10/2S/2005 CFARM Ammonia CI07 25 7664-41-7 18.232 ppm 72.9 3/3/2006 CFARM Ammonia 24.158 ppm 96.6 C103 25 7664-41-7 4/11/2006 CFARM CI04 Ammonia 7664-41-7 14.227 ppm 56.9 25 4/40/ 2006 CFARM Ammonia 101.9 C108 25 7664-41-7 25.476 ppm 12/22/2006 CFARM CI08 Ammonia 7664-41-7 34.G94 ppm 138.8 25 12/22/2006 CFARM CI08 Ammonia 7664-41-7 46.701 ppm 186.8 25 1/25/2007 CFARM Ammonia CI08 193.~ 25 7664-41-7 48.319 ppm 1/25/2007 CFARM Ammonia 510.5 Cll0 25 7664-41-7 127.618 ppm 2/2/2009 CFARM 478.4 Ammonia 7664-41-7 119.594 ppm Cll0 2S 2/2/2009 CFARM Page 3 of 6 OElUOM mg/m3 mg/m3 ppm ppm ppb mg/m3 mg/m3 ppb ppm ppb ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm Tank or Tank Farm where source air samples showed chemicals of potientiat concern above 50% of the occupational exposure limit. All the chemicals detected can potientiallv have chronic health effects. Survey Date Farm CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM CFARM 5 FARM SFARM 5 FARM 5 FARM 5 FARM 5 FARM 5 FARM 5 FARM 3/7/2007 5 FARM 10/12/2005 5 FARM 2/12/2009 2/2/2009 2/2/2009 5/12/2006 5/15/2006 8/15/2007 2/12/2009 11/6/2005 4/27/2006 5/12/2008 10/2S/2005 10/2S/2005 10/25/2005 10/2S/2005 3/3/2006 4/11/2006 4/11/2006 10/12/2005 10/12/2005 10/12/2005 10/20/2005 8/17/2006 8/23/2006 1/18/2007 3/7/2007 Location Cll0 Cll0 Cll0 C201 C202 C202 Cll0 C103 CI04 CI04 CI03 CI03 CI03 C103 CI07 C103 CI03 5101 5102 5103 5106 5101 5102 5102 5102 5102 5101 Agent Ammonia Furan Furan Mercury Mercury Mercury Mercury n-Nitrosodiethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Ammonia Ammonia Ammonia Ammonia Ammonia Ammonia Ammonia Ammonia Ammonia N-Nitrosodimethylamine Page 4 of 6 CA5 Air Cone 123.257 7664-41-7 110-00-9 31.455 110-00-9 25.687 7439-97-6 0.014 7439-97-6 0.086 0.035 7439-97-6 7439-97-6 0.056 0.092 55-18-5 62-75-9 0.234 62-75-9 1.288 10024-97-2 63 55 10024-97-2 10024-97-2 85 82 10024-97-2 61.5 10024-97-2 87.2 10024-97-2 106.3 10024-97-2 7664-41-7 464.016 7664-41-7 398.94 46.329 7664-41-7 7664-41-7 13.496 7664-41-7 47.726 36.266 7664-41-7 19.327 7664-41-7 41.414 7664-41-7 21.464 7664-41-7 1.1 62-75-9 Air Cone UOM %OEL OEL OEL UOM 25 ppm ppm 493 ppb 3145.5 1 ppb 2568.7 1 ppb ppb 57.3 0.025 mg/m3 mg/m3 342.7 0.025 mg/m3 mg/m3 0.025 mg/m3 140.5 mg/m3 0.b25 mg/m3 223.8 mg/m3 ppb 0.1 ppb 91.8 ppb 77.9 0.3 ppb ppb 429.4 0.3 ppb ppm 126 50 ppm ppm 110 50 ppm ppm 170 50 ppm ppm 164 50 ppm ppm 123 50 ppm 174.4 ppm 50 ppm ppm 212.6 50 ppm 25 ppm ppm 1856.1 25 ppm ppm 1595.8 185.3 25 ppm ppm ppm 54 25 ppm 25 ppm ppm 190.9 ppm 145.1 25 ppm ppm 77.3 25 ppm ppm 165.7 25 ppm ppm 85.9 25 ppm ppb 366.7 0.3 ppb Tank or Tank Farm where source air samples showed chemicals of potiential concern above 50% of the occupational exposure limit. All the chemicals detected can potientially have chronic health effects. Survey Date 10/12/2005 10/12/2005 10/20/2005 8/9/2006 8/15/2006 8/15/2006 8/15/2006 8/15/2006 8/17/2006 8/23/2006 1/18/2007 3/7/2007 3/7/2007 6/23/2005 6/23/2005 8/11/2005 8/11/2005 10/12/2005 10/12/2005 8/9/2006 8/17/2006 8/23/2006 8/4/2006 8/5/2006 8/7/2006 , 8/5/2006 8/7/2006 Farm SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SFARM SX FARM SX FARM SX FARM SX FARM SX FARM location S102 Sl03 Sl06 S110 S107 Sl08 S109 Sl06 SlOl Sl02 S102 Sl02 Sl02 Sl02 Sl02 5102 Sl02 S101 S102 S110 SlOl Sl02 SXI05 SXI04 SXI03 SXI04 SXI02 Agent N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Nitrous Oxide Ammonia Ammonia Ammonia N-Nitrosodimethylamine N-Nitrosodimethylamine Page 5 of 6 Air Cone CAS 62-75-9 0.77 62-75-9 1.139 62-75-9 0.749 62-75-9 2.959 62-75-9 1.81 1.033 62-75-9 1.497 62-75-9 62-75-9 0.571 1.389 62-75-9 62-75-9 0.282 62-75-9 0.913 62-75-9 2.64 1.876 62-75-9 47 10024-97-2 36 10024-97-2 29 10024-97-2 29 10024-97-2 62 10024-97-2 86 10024-97-2 10024-97-2 34.2 45.7 10024-97-2 10024-97-2 34.6 7664-41-7 51.401 46.67 7664-41-7 7664-41-7 77.081 62-75-9 0.537 2.319 62-75-9 Air Cone UOM %OEL ppb 256.7 ppb 379.8 ppb 249.8 ppb 986.5 ppb 603.4 ppb 344.3 ppb 499 ppb 190.2 ppb 4613 ppb 93.9 ppb 304.4 ppb 880.1 ppb 625.2 ppm 94 ppm 72 ppm 58 ppm 58 ppm 124 ppm 172 ppm 68.4 ppm 91.4 ppm 69.2 ppm 205.6 ppm 186.7 ppm 308.3 ppb 179 ppb 773 OEL 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 50 50 50 50 50 50 50 50 50 25 25 25 0.3 0.3 OElUOM ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppb ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm ppb ppb . Tank or Tank Farm where source air samples showed chemicals of potiential concern above 50% of the occupational exposure limit. All the chemicals detected can potientially have chronic health effects. Air Cone Survey Date Farm SX FARM SX FARM location Agent CAS SX103 N-Nitrosodimethylamine N-Nitrosodimethylamine Nitrous Oxide 62-75-9 62-75-9 Nitrous Oxide Ammonia 10024-97-2 7664-41-7 Ammonia Ammonia 7664-41-7 7664-41-7 N-Nitrosodimethylamine N-Nitrosodimethylamine N-Nitrosodimethylamine 8/7/2006 8/9/2006 7/26/2006 SX FARM 8/7/2006 SX FARM 5/9/2006 5/23/2006 3/4/2007 SYFARM SY FARM SX103 PRIMARY EXHAUSTER PRIMARY EXHAUSTER SY FARM PRIMARY EXHAUSTER 4/28/2005 SY FARM 5/9/2006 SY FARM SY FARM PRIMARY EXHAUSTER PRIMARY EXHAUSTER 5/23/2006 8/23/2006 3/4/2007 3/15/2007 SY FARM SY FARM TFARM TX FARM SX105 SX1l5 PRIMARY EXHAUSTER PRIMARY EXHAUSTER PRIMARY EXHAUSTER N-Nitrosodimethylamine ppm ppm ppm ppm 53.3 121 157.2 25 ppm 25 ppm 62-75-9 2.18 ppb 62-75-9 1.423 0.926 ppb ppb 726.7 474.4 0.3 ppb 0.3 ppb 308.5 178.8 0.3 ppb 0.3 ppb 178.9 0.3 ppb 0.3 ppb 62-75-9 62-75-9 3.856 0.746 37.69 ppb ppb ppm 0.536 ppq 0.537 0.328 21.672 ppb ppb 0.438 0.197 ppb ppb ppb TX1l8 N-Nitrosodimethylamine Ammonia N-Nitrosodimethylamine N-Nitrosodimethylamine TX FARM TX109 N-Nitrosodimethylamine 62-75-9 62-75-9 4/4/2007 UFARM UI09 Ammonia 7664-41-7 6.493 21.857 4/12/2007 U FARM UI09 N-Nitrosodimethylamine 62-75-9 8.547 6/7/2007 6/11/2007 6/11/2007 6/21/2007 TX FARM TX FARM 1112 N-Nitrosodimethylamine 53.1 13.323 30.259 39.301 62-75-9 62-75-9 TXI09 TXI07 Page 6 of 6 7664-41-7 62-75-9 UOM %OEL OEl OELUOM 1285.2 0.3 ppb 0.3 ppb 248.7 75.4 50 ppm 106.2 50 ppm 10024-97-2 Air Cone ppm ppm ppb 109.4 86.7 146.1 65.8 2164.3 87.4 2849.1 25 ppm 25 ppm 0.3 ppb 0.3 ppb 0.3 ppb 25 ppm 0.3 ppb