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TCEQ Interoffice Memorandum

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TCEQ Interoffice Memorandum TCEQ Interoffice Memorandum To: Interested Parties From: Toxicology Division, Office of Executive Director Date: March 17, 2014 Subject: March 2014 Effects Screening Levels Attached is the latest update of the list of Effects Screening Levels (ESLs) currently used by the TCEQ Toxicology Division for air permiting. This update replaces the list released on February 1, 2013. ESLs, expressed in terms of microgram per cubic meter (µg/m3) or parts per billion by volume (ppbv) in air, are used to evaluate potential for effects to occur as a result of exposure to concentrations of constituents in the air. ESLs are based on data concerning health effects, odor/nuisance potential, and effects on vegetation. They are not ambient air standards. If predicted or measured airborne levels of a constituent do not exceed the screening level, adverse health or welfare would not be expected to result. If ambient levels of constituents in air exceed the screening level, it does not necessarily indicate a problem, but a more in-depth review is conducted. We would like to call attention to several notations used on the list. Short-term ESLs are listed for each constituent. • “Short-term” generally indicates a 1-hour averaging period. However, exceptions are noted parenthetically after the name of the constituent. • “Long-term” indicates an annual averaging period. • “Final” indicates that the ESL was updated using the revised ESL development guidelines (RG-442). • “Under review” indicates that the ESL is currently being reviewed by the Toxicology Division. • “Interim” indicates that the ESL is current and will be reviewed by the Toxicology Division at a later date. Also, interim ESLs can be updated pending the release of updated toxicity information or odor data. For any compound that is designated as particulate matter (PM), the compound will be evaluated on individual basis as PM10, except for long-term crystalline silica and coal dust, which will be evaluated as PM4 . The total particulate matter represented in each permit evaluation must meet the National Ambient Air Quality Standard. For any constituent composed of at least 5% of benzene, benzene emissions will have to be modeled and evaluated separately. Bold means that a new or change has been made to that chemical since the last released version. 002206 If you cannot find a listing for a particular constituent, this does not mean a health effects review is not required. A default short-term ESL of 2 µg/m3 can be used, or you may contact the Toxicology Division to determine if a screening level has been established for a constituent that is not in this list. In the interest of time and resources, the Toxicology Division requests that you please conduct a thorough search of the Published ESL List with CAS numbers and synonyms of the constituent of interest prior to contacting the Toxicology Division. If a request has been received with constituents that are listed on the Published ESL List, it will be returned. For any technical questions, please feel free to contact Ross Jones at 512-239-1804 or email at [email protected] or Jong-Song Lee at 512-239-1790 or email at [email protected]. Finally, all further updates regarding ESLs will be posted on the Toxicology Web page when available: http://www.tceq.state.tx.us/implementation/tox/ 002207 Long‐term Short‐term ESL Short‐term ESL Long‐term ESL ESL Substance CASNo. (ug/m3) (ppb) (ug/m3) (ppb) Date Derived Status Short‐term ESL Basis Long‐term ESL Basis ((2‐(Dimethylamino)ethyl)methylamino)‐ethanol, 2‐ 2212‐32‐050 ‐‐ 5 ‐‐ 8/19/2010 Interim Health Health ([dimethylamino] methyl) phenol 25338‐55‐0 190 ‐‐ 19 ‐‐ 4/19/2004 Interim Health Health (2‐nitrobutyl) morpholine, 4‐ 2224‐44‐4 200 ‐‐ 20 ‐‐ 4/14/2004 Interim Health Health (3‐dimethylamino) propylhexahydro‐s‐triazine, 1,3,5‐tris 15875‐13‐550 (PM10) ‐‐ 5 (PM10) ‐‐ 3/25/2004 Interim Health Health (4‐Methylphenylimino)diethanol, 2,2'‐ 3077‐12‐150 (PM10) ‐‐ 5 (PM10) ‐‐ 10/28/2010 Interim Health Health (dimethylamino)‐3,5‐xylyl methylcarbamate, 4‐ 315‐18‐45 ‐‐ 0.5 ‐‐ 10/1/2003 Interim Health Health (dimethylbutyl, 1,3‐) ‐n'‐phenylenediamine, n‐ 793‐24‐810 ‐‐ 1 ‐‐ 3/30/2001 Interim Health Health (ethyl‐2‐nitrotrimethylene, 2‐) dimorpholine, 4,4‐ 1854‐23‐5 200 ‐‐ 20 ‐‐ 11/10/2000 Interim Health Health (hydroxyethyl, 2‐)‐3‐methoxy propanamide, n‐ (MHPA) 35544‐45‐7 700 ‐‐ 70 ‐‐ 2/16/2001 Interim Health Health (imidazole, 1H‐) ‐1‐ethanamine, 4,5‐dihydro‐, 2‐ nornaphthenyl derives 68478‐61‐550 ‐‐ 5 ‐‐ 5/10/2004 Interim Health Health (imidazolium, 1H), 1‐ethyl‐4,5‐dihydro‐3‐(2‐ hydroxyethyl)‐2‐(8‐heptadecnyl)‐ethyl sulfate Not assigned 150 ‐‐ 15 ‐‐ 6/16/1998 Interim Health Health (mercaptopropyl, 3‐) triethoxysilane, gamma‐ (also called EMS) 14814‐09‐650 ‐‐ 5 ‐‐ 2/17/2004 Interim Health Health (mercaptopropyl, 3‐) trimethoxysilane, gamma‐ (also called MMS) 4420‐74‐050 ‐‐ 5 ‐‐ 2/17/2004 Interim Health Health (methyl‐1,3‐phenylene) bis (N',N'‐dimethylurea), N,N'‐ 17526‐94‐250 ‐‐ 5 ‐‐ 9/9/2004 Interim Health Health (N,N‐dimethylaminoethyl)‐aminoethanol, N‐ 38361‐86‐350 ‐‐ 5 ‐‐ 2/28/2008 Interim Health Health (oxiranylmethyl)‐morpholine, N‐ 6270‐19‐5 240 ‐‐ 24 ‐‐ 2/28/2008 Interim Health Health (S)‐(+)‐2,3,7,7a‐Tetrahydro‐7a‐methyl‐1H‐indene‐ 1,5(6H)‐dione 17553‐86‐570 ‐‐ 7 ‐‐ 2/28/2008 Interim Health Health [(2‐aminoethylamino) propyltrimethoxysilane], 3‐ 1760‐24‐350 (PM10)/1000 (vapor) ‐‐ 5 (PM10)/100 (vapor) ‐‐ 4/5/2004 Under Review Health Health 1‐(2‐aminoethyl)‐2‐tall oil alkyl‐2‐imidazoline 68389‐77‐550 ‐‐ 5 ‐‐ 10/1/2003 Interim Health Health 1‐(2‐hydroxyethyl)‐2‐(tall oil‐alkyl)‐2‐imidazoline 61791‐39‐750 ‐‐ 5 ‐‐ 10/1/2003 Interim Health Health 1‐(3‐chloroallyl)‐3,5,7‐aza‐1‐azoniad adamantane chloride 4080‐31‐3 5 0.5 0.5 0.05 10/1/2003 Interim Health Health 1,1‐bis‐(chlorophenyl)‐2,2,2,‐trichloroethanol 115‐32‐210 ‐‐ 1 ‐‐ 10/1/2003 Interim Health Health 1,2‐Ethanediamine, N,N'‐bis(3‐(trimethoxysilyl)propy 68845‐16‐950 ‐‐ 5 ‐‐ 10/27/2010 Interim Health Health 1,2‐ethanedithiol (ethylenedimercaptan) 540‐63‐618 ‐‐ 1.8 ‐‐ 3/14/2014 Interim Health Health 1,3‐isobenzofurandione, hexahydromethyl‐, polymer with 2,2‐bis(hydroxymethyl)‐1,3‐ propanediol, ethyloxirane, hexahydro‐1,3‐ isobenzofurandione and oxirane 169276‐18‐050 (PM10) ‐‐ 5 (PM10) ‐‐ 9/18/2012 Interim Health Health 1,4:7,10‐ Dimethanodibenzo[a,e]cyclooctene,1,2,3,4,7,8,9,10 ,13,13,14,14‐dodecachloro‐ 1,4,4a,5,6,6a,7,10,10a,11,12,12a‐dodecahydro‐ 13560‐89‐950 (PM10) ‐‐ 5 (PM10) ‐‐ 4/17/2000 Interim Health Health 1‐buten‐3‐yne 689‐97‐4 5000 ‐‐ 500 ‐‐ 12/18/2002 Interim Health Health 1‐chlorocyclopropyl methyl ketone 63141‐09‐321 ‐‐ 2.1 ‐‐ 9/22/2008 Interim Health Health 2‐(2‐(2‐dimethylamino ethoxy)‐ethylmethylamino)‐ ethanol 83016‐70‐0 210 ‐‐ 21 ‐‐ 10/1/2003 Interim Health Health 2‐(3,4‐dichlorophenyl)‐4‐methyl‐1,2,4‐ oxadiazolidine‐3,5‐dione (Probe) 20354‐26‐135 ‐‐ 3.5 ‐‐ 10/1/2007 Interim Health Health 2‐(hydroxyl t‐butyl)‐5,5‐dimethyl 1,3‐dioxane Not assigned 500 ‐‐ 50 ‐‐ 11/22/2010 Interim Health Health 2,2'‐[oxybis(methylene)]bis[2‐ethylpropane‐1,3‐ diol] (Di‐TMP) 23235‐61‐2 1000 ‐‐ 100 ‐‐ 2/17/2011 Interim Health Health 2,2‐dimethyl propanoic acid, methyl ester 598‐98‐1 100 ‐‐ 10 ‐‐ 6/25/2012 Interim Health Health 2,4,5‐T 93‐76‐550 (PM10) ‐‐ 5 (PM10) ‐‐ 10/1/2007 Interim Health Health 002208 2,4,5‐TP 93‐72‐150 (PM10) ‐‐ 5 (PM10) ‐‐ 10/1/2007 Interim Health Health 2,5‐dimethyl‐2,5‐di(tert‐butylperoxy)hexane 78‐63‐7 100 ‐‐ 10 ‐‐ 8/22/2001 Interim Health Health 2‐[(1,1‐dimethylethyl)amino]‐ethanol 4620‐70‐6 100 ‐‐ 10 ‐‐ 11/10/2000 Interim Health Health 2‐[(2‐hydroxyethyl)amino]ethanol 8033‐73‐6 140 ‐‐ 14 ‐‐ 10/10/2000 Interim Health Health 2‐acetoxy‐1‐methoxypropane 108‐65‐6 2700 ‐‐ 270 ‐‐ 1/28/2003 Interim Health Health 2‐amino‐2‐methyl‐1‐propanol 124‐68‐5 400 ‐‐ 40 ‐‐ 10/1/2003 Interim Health Health 2‐octyl‐4‐isothiazolin‐3‐one 26530‐20‐150 (PM10) ‐‐ 5 (PM10) ‐‐ 9/14/2004 Interim Health Health 2‐propanol, 1,1'‐[(1‐methyl‐1,2‐ ethanediyl)bis(oxy)]bis‐ 1638‐16‐025 (PM10)/400 (vapor) ‐‐ 2.5 (PM10)/40 (vapor) ‐‐ 12/11/2012 Interim Health Health 2‐propenoic acid, 2‐methyl‐, 2‐hydroxyethyl ester, polymer with ethenylbenzene, methyl 2‐methyl‐2‐ propenoate and 2‐methylpropyl 2‐methyl‐2‐ propenoate 69215‐54‐950 (PM10) ‐‐ 5 (PM10) ‐‐ 9/18/2012 Interim Health Health 2‐propenoic acid, butyl ester, polymer with ethenylbenzene, 2,5‐furandione and methyl 2‐ propenoate 74082‐30‐750 (PM10) ‐‐ 5 (PM10) ‐‐ 9/18/2012 Interim Health Health 2‐propenoic acid, sodium salt, polymer with 2‐ propenamide 25987‐30‐850 (PM10)/500 (vapor) ‐‐ 5 (PM10)/50 (vapor) ‐‐ 11/30/2012 Interim Health Health 3‐amino‐prop‐1‐ene 107‐11‐9 12 5 1.2 0.5 10/1/2003 Interim Health Health 3‐chloro‐1,2‐propanediol 96‐24‐2 50 11 5 1 10/1/2012 Interim Health Health 4‐(2‐hydroxyethyl)morpholine 622‐40‐2 240 ‐‐ 24 10/10/2012 Interim Health Health 4‐(ethenyloxy)‐1‐butanol 17832‐28‐9 600 ‐‐ 60 11/24/2003 Interim Health Health 4‐chloro‐2‐methyl phenoxy acetic acid 94‐74‐620 ‐‐ 2 10/26/2012 Interim Health Health 4‐hydroxy‐4‐methyl‐2‐pentanone 123‐42‐2 960 200 96 20 11/8/2007 Interim Health Health 5‐methyl‐o‐anisidine 120‐71‐850 (PM10) ‐‐ 5 (PM10) 9/27/2007 Interim Health Health 9050 SPECIALTY ALKYLATE (100% linear dialkylbenzenes, MW 396) 94094‐93‐6 1000 ‐‐ 100 ‐‐ 1/23/2004 Interim Health Health Abamectin 71751‐41‐2 0.4 ‐‐ 0.04 ‐‐ 10/1/2003 Interim Health Health Abate 3383‐96‐810 (PM10) ‐‐ 1 (PM10) ‐‐ 5/20/2010 Interim Health Health ABC SENSITIZER (2,6‐bis[(4‐azidophenyl)methylene]‐ 4‐methylcyclohexanone) 5284‐79‐750 (PM10) ‐‐ 5 (PM10) ‐‐ 4/28/2003 Interim Health Health abietic
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