Document b5p3x0VZJMzn9jqX9YKe90Qq0

Lake Charles VCM PMht, / Septemtn?r"22, 1 y--r J M. j`J > / tAA& o Conoco Chemicals Company A Division of Conoco Inc. P.O. Box 605 Westlake. Louisiana 70669 <r (318) 491-521 1 .< u C c i V E u , \lQP 0 iSoU a V >* RECEIVED >rf \ Mr. S. L. Bergh, Chemical CEnUg-^rje<er Enviro Control, Inc. One Central Plaza ^ f-' 11300 Rockville Pike * Rockville, MD 20852 Dear Mr. Bergh: SEP 2 5 1980 CONOCO CHEMICai c / The following is in response to your letter of September 8, 1980 related to information on 1,1-Dichlolroe ,hane for the Interagency Testing Committee. 1. I am unable to 5 up lj>ly you with information related to total U. S. productio n of 1,1 DCE. The material is produced as a byproduct in our Droc ess for the production of 1,2 DCE (Ethylene Dichloride). I am unable to Forecast production trends of 1,1 DCE. For those industrie 5 producing it as a by-product, the normal trend is to red ce by-product production by process revisions 1,2 DCE (Ethylehe Ci ichloride) is used in our process to produce Vinyl Chloride Monoimer. Our process is continuous type with all vents controlled to meet existing E 5A, State, and local air and water pollution standards. Con ;rol methods include thermal incineration and catalytic react on. The by-product, 1,1 DCE leaves our plant contained in a ight-ends stream which is sold to a CarbonTetrachloride p 'ocessing plant for use as a raw material in that process. I do not have knowledge as to what wastes are produced or handling met^od^ used in the Carbon-Tetrachloride processing facility. I am unable to supply factual information related to environmental affects, biodeg radability, or chemical reactions expected if 1,1 DCE is rel eased to the environment. .6 In our process he by-product stream containing 1,1 DCE also contains Ethyl eiHe dichloride, Ethyl Chloride, and Carbon Tetra chioride. 7. No health affect studies related to 1,1 DCE have been conducted by Conoco Chemi <hald Company. oooo^86 njMC Mr. S. L. Bergh Page 2 September 22, 1980 We do not have technical bul letins or safety data sheets for 1,1 DCE. However, information on tjhis material can be found in Industrial Hygiene and Toxicology, Volume II F- ank A. Patty, Editor, Page 1279-1280. Additional information is als o a /ailable in Dangerous Properties of Industrial Materials, Fifth Edition, N. Irving Sax, Page 666-667. Sincerely, J. A. DeBernardi is CC: RDG-JJH OOOOl^87 vv c Jim Denernardi t To &k*k. (conoco) .sOu^-cLi-^l (/y) \J1.<. .. Sy. /^"J XAs-d$ 6-**- RECEIVED ShP :> o bdu ~x(? xfyO-^. '/f8&. V Wc OOQOl 2asd CERTIFIED MAIL # RETURN RECEIPT REQUESTED ** rn:wwji* 4,'LKS ..NA DEPARTT'-'i-i^T Or PUBLIC SAFETY Ori-lCrz Or S i ATP r OLIOE HAAA'AAROOUo iv'A l ERiAL.S :J'si t BOX 2 i P.O. BOX 65514^ On i i''COL-Ci ICli'm'<A. /Co&o TO 10 S:J3STAMCE3 EtaEFlGENCY PLAN This form is pursuant ta ,\oi 342 of the 1979 rocuar sssricn of tho Louisiana tagislaturs. This form shali b;> filed vriih the Secretary of Public Safely no later than December 3.1679. A copy of this form sh?.; be submitted to local municipal authorities and loco: snsnif by the same elate. 1 .Faculty Name, Location, und Ma'lirg Acdres: Conoco Chemicals, VCM Plant VCM Plant Road, P. 0. Box 605, Westlake. LA 70669 2.Position c: narna of person wno will notify authoritiesj: Guard on duty (guard will relay information as given bv the VCM Plan Shift Supervisor) 3.Telephone Lumber whcio authorities can m ake contact: (T1R) AQI-FAFn in case othftr than an omoy^gopry contact Safety Directd r (318) 491-5039 i.Lisl organizations cnc authorities who v/!l bi notifi ed in the event of a toxic release: 2-2?I2lato Felice b.l^Shenff's Office .Mutual Aid Ci.Q,-;rc Department e.QMunicipai Pbiice LGCivi* -mergsney Office g.^other__ Town of Westlake. [City of Sulphur, NgighbQringYLndusTjny_ 5.The notification to the oreper pubiic safety Author ties will include the type of gas or mixed gases, direction of travel of gas. and seventy arid oxpacteci duration cf gss emission to tfie atmosphere, and sugg 'sied actions. S.Reioases that will produce death or senous oodily hann beyond the plant perimeter shall be* reported. T.Notificction wiii be made by telephone. .. radio. or other Special emergency telephone hotline netvork to above interests simultaneously. S.Tiia Louisiana State Police has established a 24-1 our emergency telephone number 'or possible use in emergency. This number is S25-ioCS. RCMARiCS: The above plan will go l n :o effect December 8, 1979. When this form has been competed, in its entircity, p'e ass mail to the addiess listed at the top ci the page. Copies sent to: 1) Louisiana DD(eo t. of Public Safety - Office of State Police, Baton Rouge, LA 2) Calcasieu Pa "ish Sheriff's Office , Lake Charles, LA. 3) Louisiana sta te Police, Troop D, Lake Charles, LA. 4) Town of Westl ake, Office of the Mayor, Westlake, LA. 5) City of Sul phur. Office of the Mayor, Sulphur, LA. BCC: RDG-SFP-JAD-FILE Vvc 00izaa9 EMERGENCY NOTIFICAT ON - VCM PLANT - TOXIC GAS RELEASES In 1979, the Louisi i,na Legislature enacted a law that affects plants and industrial faciliti (!S engaged in the manufacture, storage or use of toxic gases. The law req tiires that each facility must formalize a plan for reporting the relea <e of any toxic gas inside their plant which may affect the general public. The law further requires that the plan is to be put into effect should such a release occur. The law becomes effective on December 8, 1979 and a formal plan must be submitted to botfi lo cal and state officials by that date. Violation of the provision of this act can carry a fine of up to $25,000.00. What is to be Reported The law simply states t hat notification to "proper public safety authorities" must be ma de when a toxic substance is released "in sufficient concentretio ns to cause death or serious bodily harm to persons outside the fac ility." In addition, the act defines toxic substance as "those sub stances which are gases under ambient temperature and atmospheric preqsur e and are enumerated in code of Federal Regulations* Title 40." As it applies to the VCM Plant, the following materials are subject to the notification rec uirements of this law. 1) Hydrogen Chloric e or HC1 (also includes decomposition products burning Vinyl Chloride cr Ethylene Dichloride) 2) Vinyl Chloride (VCM) 3) Chlorine 4) Flammable Gas - ethV lene, ethane, propylene or others in large quantities Although not necessa rily considered toxic, sizable vapor clouds of these gases could be dons dered a threat to the general public. 5) Sulphur Dioxide 6) Ammonia 4/80 21 WC 000012890 mwww Joseph Cl . Ledvina To (conocoj Date ^//0A y < -yL~^JU l( e. /cx v ^ --------------^ u 5 FP T#15 VVC 000012891 u W Louisiana Regular Session 1980 New Lavs Page 461 LOUISIANA. Regular Session Act 364, Laws 1980 Senate Bill No. 526 .l?9f/Vp S?1 n mo AN ACT To amend and reenact Subsection A of Section 1299.100 of Title 40 of the Louisiana Rsvi;;ed $t3tutes of 1950 relative to the storage and maintenance of toxi c gases; to provide for the powers of the secretary of the Department of Public Safety with respect to the preparation of emergency plans ; and otherwise provide with respect thereto. Be it enacted by the Legislature of Louisiana: Section ll Subjsecdion A of Section 1299-100 of Title 40 of the Louisiana Revised Statutes of 1950 is hereby amended and reenacted to read as follows: 1299.100. Subm ission of emergency plan; penalties A. Each p lant or industrial facility located within the state of Louisiana wherein any toxic substance is regularLy manufactured, stored, or main :aiaed in quantities capable of escaping the bounda ries or perimetsrs af such plant or industrial facility in sufficient concentrations ;o chuse death or serious bodily harm to persons outside said boilmda :ies or perimeters shall prepare and submit an emergency plan or immediate notification of the proper public safety authority. The emergency plan shall be put into effect whenever toxic substance escape beyond the boundaries or perimeters of each plant or industrial facility. The plan shall be submitted to the secretary of th* Department of Public Safety with copies furnished to the local sheriffs ati-J municipal authorities concerned. The plan shall be submitted on a form prescribed by the secretary VVC 000012892 Louisiana S 526 Regular Session 1980 New Laws Page 462 of the Department of Public Safety in accordance with the Adminis trative Procedures Act'. The term "toxic substance" is hereby defined to include those substhaces which are gases, other thaa natural gas, under ambient tenp^rati'.e and atmospheric pressure and which are designated in rule:; and regulations adopted hereunder. The plan or revisions thereto :;halL be submitted no later than January 31 of each calendar year. Section 2. If any provision or item of this Act or the application thereof is held invalid such invalidity shall not affect other provisions, items, or applications > this Act which can be given effect without the invalid provisions, ite ms, or applications, and to this end the provisions of this Act are hereby declared severable. Section 3. All lavs or parts of laws in conflict herewith are hereby repealed. Approved, July 18, 198Q VVC 000012893 Lak Charlaa VCM Plant CERTIFIED MAIL #31613 RETURN RECEIPT REQUESTED September 9, 1980 (conoc s) received St? 1 i. Conoco Chemicals Company A Division of Conoco Inc. P.O. Box 605 Westlake. Louisiana 70669 (318) 491-5211 Barbara Brand TRW Environmental Eng^nee 'ing Division 1509 Main Street Suite 720 Dallas, TX 75201 Dear Ms. Brand: The following is provided in response to your request for more information regarding Conoco Chemical Company's permit application for construction of modifications to the Conod o VCM Plant in Westlake, Louisiana. Specifically, we wish to clarify the po int of emissions potential in the VCM Plant's Vent Gas Incineration Unit (Poi nt Source I.D. No. V-A). The Plant has identified this point as the flue ga? vent stack downstream of the Incineration Unit, The Incinerator is not 11 ited as a control device for hydrocarbon reduction since National Emission S :andard for Hazardous Air Pollutants (NESHAP) regulations require reduction of viny chloride emissions from the vents from the Plant process, Therefore, the Incinerator is .required for compliance with NESHAP regulations and is considered an integral part.of the process. The Incineration Unit is also defined as a productioln up it since muriatic (hydrochloric) acid is produced in its operation. The flue gas immediate iy 4xiting the incinerator cannot be considered a source of emission potential ei: tii er, even though the flue gas enters scrubbing towers (HC1 Absorber and Caustic $brut ber) immediately downstream of the Incinerator. The HC1 Absorber and the Ca usl; ic Scrubber form an integral unit with the Incinerator, The Incinerator cannot be operated without the HC1 Absorber and the Caustic Scrubber, Also, the HC1 Absorber is the equipment in which the product muriatic acid is re covered and thus it al so constitutes a production unit. Therefore, the vent stack downstream of the Causlt ic Scrubber is the only source of emission potential in the Incinerator Unit. Also enclosed is a copY of a letter sent to Randall Brown of the EPA confirming the approval of our State Construction Permit by the Louisiana Department of Natural Resources. Revisiions to the permitted emissions are included, and these revised emissions should te used in PSD determinations. If you have any'quest!10ins or require further information concerning this letter, please contact G. L. Fo'She e. Chief Process Engineer, at (318) 491-5062. Sincerely, J. A. DeBernardi fe: REL-CRH-HJN-VAM-ffiLF-PLF-DLD-JWW-JCL-DLD Lakt Chart#* VCM Plant CERTIFIED MAIL #3156^0 RETURN RECEIPT REQUESTED September 8, 1980 icsnocs) received Conoco Chemicals Company A Division of Conoco Inc. P.O. Bax 605 Westlake. Louisiana 70669 (3161 491-5211 St? 111930 Mr. Randall E. Brown Environmental Protection Agency 6AAHAT Technical Support``Section First International E^iiil^ing 1201 Elm Street Dallas, TX 75270 , . Dear Mr. Brown: Attached is the revi sed Section IV of the Appendix of the Prevention of Significant Air Quali ty Deterioration (PSD) permit application which was submitted to your offti ce on February 14, 1980 by the Conoco VCM Plant, These revisions refle ct in updating of information as the engineering on the plant expansion conti nues. These revisions constitute a decrease in permitted emissions. A copy of the revised Emissions Inventory Questionnaire (EIQ) which was sent to the State of Louisians. is also included. This EIQ is considered by the State to be the permit Since the revisions reflect an emissions decrease, the State does not requi tfe that the revisions be placed before the commission, However, by submission of the revised EIQ to the Technical Secretary, the new EIQ becomes the e iforceable permit. A copy of the letter :oniirming the approval of the original State Construction and Operating Pe 'mit by the Louisiana Environmental Control Cormission on March 25, 1980 is uttached. The revised EIQ that was submitted to the State now supersedes ihe EIQ in the original permit and is considered the enforceable permit. If there are any questions, please contact Gary Foshee at (318) 491-5062. Sincerely, J. A. DeBernardi Plant Manager is Enc CC: Kathy Bell Barbara Brand BCC: / REL-CRH-HJN-VAM-GLF-PLF-DLD-JWW-OCl-JGC VVC 000012895 APPENDIX SECTION IV EMISSION CALCULATIONS 00001*896 TABLE I SUMMARY OF EMISSIONS TONS/YR. Hydrocarbons Total Point SourceVCM Point Source Other Hydrocarbon Point Particulates Carbon Monoxide Nitrogen Oxide SuTfur Dioxide Incremental U) Potential to Emit uroi 5.59 6.78 1.62 19.-21" 9.57 22.17 59.32'. Expanded Plant Total A1lowable 23 .39 11 .18 1-2 .2V 86 183 17 .73 244 .97 68 .45- Existing Plant . Total Allowable Total Net Change 4636.0 60.1 4575.9 67.62 1784.16223.9 9.13 f?4612`.61 - 48.92 -4563.69 + 19.21 -1766.43 + 21.07 + 59.32 -The "Potential to Emit" we s c iilculated from a base of existing allowable emissions v. and, therefore, only reprdsents the potential to emit above the present permit J "conditions. WC 000012897 6 CD Source Oxychlorination Vent Stack 1.0. Mo. 1V-4 No. 1 Cracking Furnace I.D. No. II-A Pollutant Particulates'! Hydrocarbons - Total Carbon Monoxide liJitrogen Oxides Sulfur Dioxide ven Particulates , Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sul fur Oioxide No. 2 Cracking Furnace I.D. No. 1I-B Particulates Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sulfur D,i oxide TABLE 11 POINT SOURCE EMISSIONS - EXISTING AND EXPANDED CASE Hi Existing Permit Tons/Yr. 0 4610.0 1776.0 0 0 S5.8 Expanded Potential to Emit? Tons/Yr.- 0 0 0 0 0 0 Expanded Actual Tons/Yr. 0 0 0 0 0 0 3.81 0.634 3.6 48.7 4.46 0 3.81 0 0.634 0 3.6 0 48.7 0 4.48 3.81 0.634 .. 3-6 48.7 4.48 0 3.81 0 0.634 0 3.6 0 48.7 0 4.48 Expanded^ Allowable Tons/Yr. J Net Change * Existing to Expanded Allowable Tons/Yr. 0 -0 0 >4610.0 0 -1776.0 00 00 0 - 55.8 3.61 0.634 3.6 40.7 4.48 " 0 0 0 0 0 3.61 0.634 3.6 48.7 4.46 0 0 0 0 0 1) Expanded allowable represents the emission values based upon the emission permit application submitted to the State of Louisiana. 2) Potential to Emit addresses only the emissions which are over the.existing permits. s < Source Propylene Vent Stack I.D. No. IV-C No. 3 Cracking Furnace I.D. No. Il-C Dock EDC Tank I.D. No. IV-J Pollutant Particulates Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sulfur Dioxide '* TABLE II (Cont'd.) POINT SOURCE EMISSIONS - EXISTING AND EXPANDED CASE Existing Permit Tons/Yr. Expanded Potential to Emit? Tons/Yr.. Expanded Actual Tons/Yr. 0 8.2 0 0 0 0 0 0 0 0 0 0 0 0 0 Particulates , Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sulfur Oioxide 0 0 0 0 0 3.24 1.62 6.10 22.17 57.47 3.24 1.62 B. 10 22.17 57.47 Particulates Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sulfur Dioxide 0 7.33 0 0 0 00 0 7.33 00 00 00 Expanded^ Allowable Tons/Yr. 0 0 0 0 0 Net Change - Existing to Expanded Allowable Tons/Yr. 0 -8.2 0 0 0 3.24 1.62 8.10 22.17 67.47 *- 0 7.33 0 0 0 + 3.24 + 1.62 + 8.10 +22.17 +57.47 0 0 0 0 '0 1) Expanded allowable represents the emission values based upon the emission permit application submitted to the State-of Louisiana. 2) Potential to Emit addresses only the emissions which are over the existing permits. 99 < <n o o oo tNo oo Source Dock VCM Vent Recovery I.D. No. IV-K Pollutant Particulates < Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sul fur Dioxide Vent Incinerator l.D. Ho. V-A Total Particulates . Hydrocarbons * Total Carbon Monoxide Hitrogtn Oxides Sulfur Dioxide VCM Particulates Hydrocarbons - Total Carbon Monoxide Nitrogen Oxides Sul fur Dioxide VCM t TABLE U (Confd.V POINT SOURCE EMISSIONS EXISTING AND Existing Permit Tons/Yr. 0 0.1 0 0 0 Expanded Potential to Emit^ Tons/Yr. -- 0 0 0 0 0 Expanded Actual Tons/Yr. 0 0.1 0 0 0 60.0 9.1 0.96 126.5 0.166 4.3 67.62 4636.0 1784.16 ' 223.9 9.13 60.1 15.97 3.97 1.47 0 1.85 6.78 19.21 5.59 9.57 22.17 59.32 6.78 75.97 13.07 2.43 125.40 2.02 11.08 86.83 23.39 17.73 244.97 68.45 11.18 Expanded^ Allowable Tons/Yr. J 0 0.1 0 0 0 Net Change - Existing to Expanded Allowable _______ Tons/Yr. 0 0 0 0 0 75.97 13.07 2.43 125.40 2.02 11.08 86.83 23.39 17.73 244.97 68.45 11.18 " +15.97 3.97 + 1.47 * 1.1 + 1.85 + 6.78 + 19.21 -4612.61 -1766.43 + 21.07 + 59.32 - 49.02 I) Expanded allowable represents the emission values based upon the emission permit application submitted to the State of Louisiana. 21 Potential to Emit addresses only the emissions which are over the existing permits. SAMPLE EMISSION CALCULATIONS EXPANDED VCM PLANT New EDC Cracking Furnace Description The calculations or the emissions for the new cracking furnace are done as follows: 1. Determine required heat- duty. 2. Select the fusil. 3. Determine the fue|i firing rate based on the lower heating value (LHV). 4. For all pollutants, except NGx the emissions are then M gallons fuel burned times t)he ^mission factor obtained from the EPA Publication AP-42. 5. For N0X, a sta ck das calculation is made based on 15% excess air. NO, emitted is theln calculated based on information provided by John Zink Company for its Lo N0X burner and the particular fuel type. This calculation was used for the expanded actual and expanded allowable categories of Table II. The expanded potential to emit category of N0X on Table II was calculated by multiplying the M gallons fuel burned times the emission factor obtained from the EPA Publication AP-42. 6. Stack ga-5 concentrations are calculated from'the emissions and the stack gas flow rate. Sample Calculations 1. Heat release ruqui red-51.314 MM BTU/Hr. Use purchased t^o. 2 fuel oil with a LHV of 126,788.1 BTU/Gal. and a sulfur content of 0.25 wt. %, 3. Fuel firing rat(e-- Firing rate - 51|314 x 106 BTU/Hr. * 404.723 Gal. of No. 2 Fuel Oil ~TV2~6,78&.1 BTU W7~ I Gal. VVC 000012901 4. Emission Calcu ations (except N0X)-- AP-42 1 mission Factors Pollutant ^ Factor (Lb./M Gals.) Particulates Hydrocarbons Carbon Monoxide Sulfur Dioxide I 1 1 | 2 1 & 142 (wt. % sulfur) Particulates s 404.723 Gals. x 2 Lb". X M Gals. x Ton x 8,000 Hr. ' Hr. t|l Gals. T"i 000 Gals. 2,000 Lb. Yr. - 3.24 Tons/ Yr. Hydrocarbons 404.723 Gals. x ' 1 Lb. X M Gals. x Ton Hr. rjl. Gals. 1 ,000 Gals. 2,000 Lb x 8,000 Hr. Yr. - * '1.62. Tons/Y r. Carbon Monoxide | 404.723 Gals. < , 5 Lb. X M Gals x Ton x 8,000 Hr. Hr. 1^ Gals. 1, 000 Gals. 2,000 Lb. Yr. s 8.10' Tons/Yr. Sulfur Dioxide j 404.723 Gals. ; 142 (0.25) Lb. x M Gals. x Ton x 8,000 Hr Hr. 1 M Gals. 1,000 Gals. 2,000 Lb. Yr. - 57.471 Tons/Yr 5. Emission Calcule tiojis for N0X-- AP-42 Emi ssibn Factor1 "T " 1 1 Pollutant Factor (Lb./M Gals.) T NOx 1 22 John Zink Co. L o n6* 8urner Factor Fclctor (Lb./MM BTU) Pollutant N0X 0.108 VVC 000012902 Uncontrol 1ed too 404.723 Gals. x I 22'. Lb. x M. Gals. Hr. I M Gals. 1,000 Gals7 Ton 8,000 Hr. 2,000 Lb. x Yr. - `35.62 Tohs/Y|r. Controlled NO 51.314 MM BTU x | 0.108 Lb. x 8,000 Hr. Ton Hr. . MM BTU Yr. ,x 2,000 Lb. * 22.168 Tom /Yr Stack Gas Concentrations--based on the maximum possible flowrates Particulates 0.97 Lb. of Partialates x Lb.-Mole Hr. l2~Lb. of Particulates' 737.231 ft.J x Min. _ x Hr. Lb.-Mole of St^cFGas 22,375 ft.3 60 Min. x 1 x 106 = 44.|5 PPM (parts per million) Million Hydrocarbons 0.49 Lb. of Hydrocarbons x Lb.-Mole Hr. 66 Lb. of Hydrocarbons 737 2311 ft. x Min. ,, x Hr. Lb.-Mole of Stafk Gas 22,375 ft.d 60 Min. x 1 x 10,6 _ 4.1 I. PPM Million Nitrogen Dioxic 6.65 Lb. of Ni troqen Dioxide . x LLbb..--MMoollee Hr7, | i " 46 Lb. of Nit;rrooggen Dioxide 4 737.231 ft Lb.-Mole of >ta<^k Gas Min. 22,375 ft. x Hr. 60 Min x 1 x I1P06^ - 7I9.3I PPM Million vvc OOOOI2903 Sulfur Dioxide 17.24 Lb. of Sulfjr Dioxide x Lb.-Mole Hr. 64 Lb. of Sulfur Dioxide 737.23 ft 3 Lb.-Mole of Stick Gas Min. x Hr. 22,375 ft.3 60 Min. x 1 x 106 i Million 147.9 PPM Carbon Monoxic 2.43 Lb. of Ca rbon Mono'xide x Lb.-Mole Hrf 28 Lb. of Carbon Monoxide 737.231 ft Lb.-Mole of Sta ck Gas Min. ,, Hr. 22,375 ft.3 x 60 Min. 1 x IQS = '47 .7 PPM Million VVC 000012904 Vent Incineration ijnit Description The calculations fbr the emissions for the vent incineration unit are done as follows:. 1. Determine the incineration unit exhaust gas rate. 2. Determine "he applicable emission factors for the incineration unit. 3. For all po'lutants, the emissions are then calculated by multiply ing the exhaust gas flow rate times the applicable emission factor. 4. Stack gas concentrations are calculated from the emissions and the exhaust gas flow rate. SamDle Calculalions 1. Exhaust gas rate--1,536,900 DSCF/Hr., based on the firing of the vents and the faste liquid streams from the expanded plant with 80% excess air. .2 The inciner ation unit vent stack was tested by Kemron Environmental Services during a recent test run of the incineration unit. The data calculated from this test run were used as a basis for the emission factors to be used for the expanded plant. See the attached data sheet. At the expa ided operating rate of the revised plant, the scrubbers will operat s near the limit of their capacity for the efficient control of pollutants, therefore, a linear extrapolation of the test run data is not considered to be valid at the expanded operating rate of the revised pi a it. In our best judgement, the scrubbing efficiency will be non inear in this operating range and we have determined the emissi 0 1 factors to be as follows: Emission Factors Pollutant Particulate* Sulfur Oioxide Nitrogen Dicxid^ Hydrocarbons Carbon Monoxide Factor (Lbs./DSCF) 1.1315 2.993 1.868 2.9507 3.6098 10,-5 10-7 10-5 10-7 10-7 See "the Air Pollution Engineering Manual, (Second -Edition), Part I, Pages 208-21 fdr an explanation of the effects of increased flow rates on the operation and efficiency of packed scrubbers. This manual was p rep^red for the EPA. VVC 000012905 The emission ifactor for VCM emissions from this source was based on the allowdble emission of 10 ppm VCM in the exhaust gas of the incinerator, i Emi ssion C alc^ilations-- Particular es 1,536,900 dsc(f x 1 .1315 x 10"5 Lb. 'x. 365 Days Hr. j DSCF . Yr. x 24 Hrs. Day xJl Ton 2,000 Lb. = 75.97 Tons/Yr. Sulfur Dio xidi 1 ,536,900 DSCft x 2.993 x 10'7 Lb. x 24 Hrs. x 365 Days Hr, | DSCF Day Yr. x Ton ss 2.02 Tons/Yr. 2,000 L D. Nitroqen D ioxide 1,536,900 i 1SCF x .1.868 x 10-5 Lb. x 24 Hrs. x 365 Days Hr. 1 DSCF Day Yr. x Ton 2,000 L L 125.40 Tons/Yr. Hydrocarbo ts (Excluding VCM) 1,536,900 iscf| x 2.9507 x 10-7 Lb. x 24 Hrs. x 365 Days Hr. | DSCF Day Yr. x Ton 2,000 L f Carbon MomJxidl 1.99 Tons/Yr. 1,536,900 I3SCF x 3.6098 x 10-7 Lb. x 24 Hrs. x 365 Days Hr. -- DSCF Day Yr. x Ton 2,000 LI =) 2.43Ton$/Yr. V VVC 000012906 VCM 1 ,536,900 DS(tF x 10 DSCF x 62.5 Lb. of VCM Hr T xTlO6 OSCF Lb.-Mole Lb.-MoU x 24 Hr. x 365 Day x Ton 379.56 r"SCF* Day Yr. 2,000 Lb. = 11.08 tTonsl/Yr. * 379.565 SCF/Lb.-Mole at 60F, 1 atm. 4. Stack Gas Concentrations--based on thfe maximum possible flowrates Particula es 21.61 Lb. of Particulates x Lb.-Mole Hr. 12 Lb. of Particulates 4^7.oh ft.3 Lb.-Mo e o f Stack Gas Min. 28,817 ft. Hr. 60 Min. x 1 x 10(i _= 444.8 ppm (parts per million) Mill lor. Total Hydrocarbons 3.70 Lb. cf H 'drocarbons x Lb.-Mole Hr. 28 Lb. of Hydrocarbons 42 7.01 ft.3 Lb.-Mol e of Stack Gas Min. Hr. 28,817 ft.'5 x 60 Min. x 1 x 10fi Mill ion 32.7 PPM Nitroaen Dioxide 35.68 Lb. pf Nitrogen Dioxide x Lb.-Mole 46 Lb. of Nitrogen Dioxide 42 K 01 ft. x Min. x Hr. Lb.-Mol i of Stack Gas 28,817 ft.3 60 Min. x 1 x 106 = 191.5 ppm Million VVC 000012907 Sulfur Di oxi die 0.57 Lb. of Sulfur Dioxide x __________ Lb.-Mole H 64 Lb. of Sulfur Dioxide 427.01 ft. Lb.-Mole df Stack Gas 1 x 105 H 2.2 ppm Mi 11io i Min. ^x Hr. 28,817 ft.3 60 Min. Carbon Monoxi de 0.69 Lb. of Carbon-Monoxide x ______ Lb.-Mole Hr. 28 Lb. of Carbon Monoxide 42 .01 ft. Lb.-Mo e of Stack Gas x 1 x 10* Mi 11 i or' 6.1 ppm Min. x Hr. 28,817 ft.3 60 Min. VVC 000012908 COMBUSTION EQUATIO! s d F INCINERATION FUEL Process Vents C2H4C12(EDC) + C2H3CL(VCM) + C2H5C1(Ethyl Chlori de) + chci3 + ^2o + CC14 + 2H20 ch4 + C2H4 C2H6 h2 + + + CO + 2.5 2 --------- > 2.5 2 --------- > 3.0 z ---------> 0.5 2 --------- > --------> 2.0 2 ---------> 3.0 2 --------- > 3.5 02 .-------- > 0.5 2 ---------^ 0.5 2 ---------> 2C2 2C02 2CQ2 co2 C2 co2 2C02 2C02 co2 + H20 + H2 + 2H20 + 2H20 + 2H20 + 3H20 + h2o + 2HC1 + HC1 + HC1 + 3HC1 + 4HC1 WC 000012909 By-Product Liquids 1. Light Ends C2H4C12 (EDC) + 2.5 02 C2H3C1 (VCM) + 2.5 0? C2H5CI (Ethyl Chlor 'de) + 3.0 02 chci3 + h2o CC14 + 2H20 + 0.5 02 * c2h4 + 3.0 02 C2H2Cl2 + 2.0 02 2. Tars (elemental equ ations) C (Carbon) H (Hydrogen) + 0? + 0.25 02 Cl (Chlorine) + 0.5 H20 Supplemental Fuel ch4 + 2.0 02 --> 2C02 --> 2C02 --> 2C02 co2 --> co2 --^ 2C02 --> 2C2 + h2o + h2o + 2H20 + 2H20 + 2HC1 + HC1 + HC1 + . 3HC1 + 4HC1 + 2HC1 C02 0.5 H 2 __ ^ HC1 + 0.25 2 co2 + 2H20 The following tables it uni ze the sources and flowrates of the vent feed incinerator and the components and flowrates of the exhaust gases from the in- cinerator firebox. VVC 000012910 V TABLE III INCINERATOR VENT FEED MOLES/HOUR Loadiriq Direct Chlorination Header EDC VCM Et. Cl. CHC13 ccV CH4 C2H4 C2H6 H2 2 N2 CO COo HCT 6.00 __ -- --- -- -- --- 148.30 --... - 0.56 0.80 0.47 -- -- 21.56 6.17 1.07 4.34 25.11 61.59 2.79 31.18 15.86 Subtotal 154.30 Auxiliary Fuel (CH4) 171.50 Subtotal Stoichiometric Combusti cm /l[ir Excess Combustion Air TOTAL Viet Vent , Header 3.89 7.39 40.26 4.77 2.39 5.42 17.51 0.85 0.89 43.18 0.41 2.77 -- 129.73 0? 325.68 281.34 ___ N; 1225 1058 Total 4.45 14.19 40.73 4.77 2.39 26.98 23.68 1.92 4.34 26.00 253.07 3.20 33.95 15.86 455.53 22.50 478.03 1550.86 1339.71 3368.6 VVC 000012911 TABLE IV ' COMBUSTION OF VENTS MOLES/HOUR Vent Component Compor; ent Vent Ra te Oxygen Required Incinerator Firebox Effluent (1) ,CP2 HC1 . h2o EDC VCM Et. Cl. CHC13 CCI4 ch4 C0H4 C2H6 2 2 N2 CO CO? HCT Subtotal Auxiliary Fuel (CH4) TOTAL 4 45 14 19 40 73 4. 77 2. 39 26 98 23. 68 1. 92 4. 34 26. 00 253. 37* 3.20 33. 95 15. 86 455.1J3 22.50 478.03 11.13 35.48 122.19 2.39 -- 53.96 71.04 6.72 2.17 (26.00) 1.60 --- 280.68 45.00 325.68 8.90 28.38 81.46 4.77 2.39 26.98 47.36 3.84 -- 3.20 33.95 -- 241.23 22.50 263.73 8.90 14.19 40.73 14.31 9.56 -- -- --- -- _ -- 15.86 103.55 103.55 4.45 14.19 81.46 (4.77) (4.78) 53.96 47.36 5.76 4.34 -- -- -- 201.97 45.00 246.97 (1) The incinerator firebox effluent also includes 281.34 moles/hour of excess oxygen and 2283.57 moles/hour )f nitrogen. 000012912 VVC. SAMPLE CALCULATIONS FOR DETERMINING THE INCINERATOR FIREBOX EFFLUENT FROM PROCESS VENTS Example -- EDC at 4.45 moles/hour C2H4C12 (EDC) + 2.5 0 2C02 H*0 2HC1 Oxygen consumed C0 Produced = (4. tol. EDC/Hr.)(2.5 Mol. 02/Mol. EDC) * (4. 45 Mol. EDC/Hr.)(2.0 Mol. CC^/Mol. EDC) = 11.13 Mol./Hr. 8.9 Mol./Hr. H20 Produced * " (4. 45 Mol. EDC/Hr.)(1.0 Mol. H20/Mol. EDC) = 4.45 Mol./Hr. HC1 Produced = (4. 45 Mol. EDC/Hr.)(2.0 Mol. HCl/Mol. EDC) 8.9 Mol./Hr. Oxygen Balance Total Oxygen consumed 11. 13 + 35.48 + 122.19 + 2.39 + 53.96 + 71.04 + 6.72 + 2.17 + 1.60 + 45.00 351<68 Mol./Hr. Stoichiometric Oxygen Oxygen consumed minus oxygen supplied in the vent = 351:68 - 26.00 = 325.68 Mol./Hr. Excess Oxygen Percent excess oxygen times oxygen consumed * (80%)(351.68 Mols./Hr.) = 281.34 Mol./Hr. Nitrogen Balance Stoichiometric Air Excess Air Nitrogen (Air = 21.0 Mol. %, 79.0 Mol. % N2) Stoichiometric oxygen divided by 21.OX = 325.68 -f 21* = 1550.86 Mol./Hr. 79% of Stoichiometric Air = (79% x 1550.86 Mol./Hr.) = 1225.18 Mol./Hr. Excess oxygen divided by 21% (281.34 Mol. 02/Hr.) * 21% = 1339.71 Mol./Hr. (79% x 1339.71 Mol./Hr. = 1058.37 Mol./Hr. VVC 000012913 The following table itemized the components and flowrates of the light ends byproduct liquid stream and the oxygen required for combustion. The incinerator firebox effluent components and flow rates arfe also shown. TABLE V LIGHT ENDS BYPRODUCT LIQUID FIRING t Mol./Hr. Component EDC VCM Et. Cl. CHCU CC14 C2H4 CTV Oxygen Fee< Ra te Required ; .10 ( .83 10. 90 3, 60 1. 02 0. 47 2. 15 5.25 2.08 32.70 1.80 -- 1.41 4.30 Incinerator Firebox Effluent n2 CO? HC1 h2q 4.20 4.20 2.10 -- 1.66 0.83 0.83 -- 21.80 10.90 21.80 -- 3.60 10.80 (1.80) -- 1.02 4.08 (2.04)- -- 0.94 -- 0.94 -- 4.30 4.30 -- Subtotal 21. 07 47.54 -- 37.52 35,11 21.83 Oxygen Supplied Stoichiometric Air. 226. 38 47.54 178.84 -- -- -- Excess Air 181. 10 38.03 143.07 ____ TOTAL 428. 50 85.57 321.91 37.52 35.11 21.83 VVC 000012?^ SAMPLE CALCULATIONS FOR DETERMINING THE INCINERATOR FIREBOX EFFLUENT FROM LIGHT ENDS BYPRODUCT LIQUIDS Example: EDC at 2.10 Mol es/Hour C2H4C12 (EDC) + 2 .5 0 ^ 2C02 + H20 + 2HC1 Oxygen consumed : * C2 .10 Mol.EDC/Hr.](2.5 Mol. 02/Mol. EDC) 5.25 Mol./Hr. C02,produced .= HC1 produced '* H2O produced = Oxygen Balance C2.10 Mol.EDC/Hr.)(2.0 Mol. C02/Mol. EDC) (2.10 Mol. EDC/Hr.)(2.0 Mol.HCl/Mol. EDC) (2 .10 Mol. EDC/Hr.)(1.0 Mol. HgO/Mol. EDC) 4.20 Mol./Hr. 4.20 Mol./Hr. 2.10 Mol./Hr. Stoichiometric Oxygen 5.25 + 2.08 + 32.70 + 1.80 + 1.41 + 4.30 * 47.54 Mol. /Hr. Excess Oxygen Nitrogen Excess Air Nitrogen (80%)(47.54 Mol./Hr. Stoichiometric Oxygen) = 38.03 Mol./Hr. (79%)(226.38 Mol./Hr. Stoichiometric Air) * 178.84 Mol./Hr. (38.03 HCl/Hr. Excess Oxygen)* (21% Oxygen)15 181.10 Mol./Hr. (79%)(181.10 Mol./Hr. Excess Air) = 143.07 Mol./Hr. VVC 000012915 The following table.iterrizes the elements and flowrates of the tar Byproduct liquid stream and the o >[ygeii required for combustion. The incinerator firebox effluent components and flowrates are also shown. Element Carbon Hydrogen Chlorine Subtotal TABLE VI TAfjl BYPRODUCT LIQUID FTRING . Mol ,/Hr FI owrat; Oxygen Required Incinerator Firebox-Affluent 59,68 78.13 47.32 59,68 19.53 01.83) 59.68 - 32,06 47,'32 23,66 185.13 67.38 5a, 68 47t32 15,40. Stoichiometric Air Excess Air Total 320.86 256.69 762.68 Oxygen Supplied 67.38 53.91 121,29 253.48 202.78 456.26 59.68 * 47.32 -- 15.40 vvc 000012916 SAMPLE CALCULATIONS FOR DET :rmi NING THE INCINERATOR FIREBOX EFFLUENT FROM TAR BYPRODUCT LIQUIDS Oxygen Consumed s (59.68 Mo ./Hr.) (1.0 Mol. 02/Mol,C.) + (78.13 Ijlol. H./Hr.) (0.25 Mol.Og/Mol.H) - (47.32 Mol. Cl/Hr.) (0.25 Mol. Cl./Mol.Cl) 67.38 Mol. /Hr^ CO2 Produced (59.68 Mol .cC..||Hr.) (1.0 Mol. C02/Mol.C.) 59.68 Mol. CO,,,/Hr. HC1 Produced (47.32 Mol . Cl ./Hr) (1.0 Mol. HCl/Mol. Cl.) 47.32 Mol. HC1 /Hr. HgO Produced (78.13 Mol . H. /Hr.) (0.5 Mol. HgO/Mol. H.) (47.32 Mol . Cl ./Hr.) (0.5 Mol. H20/Mol. Cl.) 15.40 Mol. /Hr. Oxygen Balance Stoichiometric Oxygen Excess Oxygen = (80%) (67. 38 ^ol./Hr. Stoichiometric Oxygen) = 53.9 Mol./Hr. Nitrogen Balance Stoichiometric = (67.38 Mol /Hr . Stoichiometric Oxygen) ~ (21%) Air * 320.86 Mol Hr Nitrogen * (79%) (320 86 Mol./Hr. Stoichiometric Air) = 253.48 Mol /Hr. Excess Air = (53.91 Mol. /Hr. Excess Oxygen) 4 (21%) - 256.69 Mol. /Hr Nitrogen = (79%) (256. 69 Mol./Hr. Excess Air) * 202.78 Mol. /Hr; vvc 000012*1* OCM n2 C02 HC1 h2o Total TABLE VII INCINERATOR FIREBOX EFFLUENT RATES MOLES/HOUR VENTS 281.34 2,536.64 263.73 103.55 246.97 3,432.23 LIGHT ENDS 38.03 t 21.91 37.52 35.11 21.83 i 54.40 TARS 53.91 456.26 59.68 47.32 15.40 632.57 TOTAL' 373.28 3,314.81 360.93 185.98 284.20 4,519.20 OCM c_) 2 n2 Total JTABLE VIII INCI AERATOR STACK EFFLUENT RATES 01 MOLES/HOUR VENTS 281.34 2,536.64 263.73 LIGHT ENDS 38.03 3 jjl.91 37.52 TARS 53.91 456.26 59.68 TOTAL 373.28 3,314.81 360.93 3,081.71 3 ^7.46 569.85 4,049.02 (1) The H20 and HC1 are remo\ted in the scrubbers. Incinerator Stack Venl Rate PSC FT at 60F and 14.7 psia) DSCF/Mol. = RT/P = (10.73 Ft'I _ Rsia/Mol R.) (460 + 60) R.) 7 (14.7 p: ia) = 379.565 Ft3/Mol. DSCF/Hr. (4049.02 Mol./Hr. (379.565 DSCF/Mol.) = 1,536,900 DSCF/Hr VVC 000012918 | Parameter Filterable Particulates Total Particulates Sulfuric Acid Mist Sulfur Dioxide Oxides of Nitrogen. Hydrogen Chloride Total Hydrocarbons Non-Methane Hydrocar bons_ EMISSION TESTING FOR CONOCO Cond. I Cone. Rate GR/DSCF #/HR/ 0.0205 0.0319 0.08 0.0326 0\ 113 1 ppm 1.25 1.95 0.653 1.99* 6.90 1 ppm K6H1ROS1 r<vire-rii Cond. II Cone. GR/DSCF * Rate S/HR 0.0395 0.0506 0.00649 - 3.83 4.89 0.613 -. 0.0285 2.73 0.110 10.5 Qorg-Vomer Corporation 00001*919 J FRANK A. ASHBY, JR. SECRETARY DEPARTMENT OF NATURAL RESOURCES OFFICE OF ENVIRONMENTAL AFFAIRS AIR QUALITY DIVISION September*2, 1980 B. JIM PORTER ASSISTANT SECRETARY Conoco Chemical Com|panjy P. 0. Box 605 Westlake, Louisiana 7D669 Re: Modification of VCM Plant Dear Sir: This is to confirm that your permit request for the above referenced project it onoco Chemicals Co., Lake Charles has been approved by thfe Lb uisiana Environmental Control Commission The submittal was approved on the basis of emissions reported and the apj> ro /al in no way guarantees the design scheme presented will be c ipa le of controlling the emissions to the types and quaiititi e:> s rated. Date: March 2 1980 Permit No. 1424 The attached 2 synopsis sheets and 3 data sheets establish the emission operating limitations which condition this certifi cate of approval. A n^w application must be submitted if the reported emissions are exceeded after operation begins. The permit numb er cited above should be referenced in future correspondence regar din g this subject. Sincerely, BJP/AB/ebp / f?--- B. Jim Porter Assistant Secretary Office of Environmental Affairs WC 0000129Z0 P.O.BOX 60630 . NEW ORLEANS, LA. 70160 . PHONE 504 568-5121 . 325 LOYOLA AVENUE b(V^Ar;iJ-.-'i<71 LOUISIANA ENV IRONMENTAL CONTROL COMMISSION AI R QUALITY DIVISION C0NDC0 CHEMICAL COMPANY LAK E CHARLES VCM PLANT Wektlake (Calcasieu) This permit request by Conoco Chemicals Company, a Division of Conoco Inc. is for permission to modify, its existing vinyT chloride monomer production facility'located at Westlake in Calcasieu Parish to expand its production capacity frorr 70b million pounds per year to one billion pounds per year on an annualized basis. The expansion will be accomplished by adding a parallel train to the VCM system and debottlenecking existing equipment. The technology will be based on a well proven system. Process emissions w ill be controlled by recovering hydrocarbon as much as practical and then by incineration to meet the NESHAP Standard of less than 10 ppm VCM in any vant gas Process incinerators will be controlled with wet scrubbers and the new heater will use LoNOx burners. Sulphur oxide emission^ will be controlled by using fuel of less than 0.7% sulfur content. The debottlenecking techniques employed will result in hydrocarbon and CO being reduced by 4609 and 1768 tons per year respectively. Dispersion modeling supplied by the company indicates that ambient air quality standards will nbt b e violated. Table I shows the effect of this plant expansion on emissions of the facility as a whole. NSPS does not apply to this facility. Recommendations- - - (See Approval) JHS/ys VVC 001Zgzl RECOMMENDATION; pOO CHEMICAL COMPANY iJAKE CHARLES VCM PLANT fVestlake (Calcasieu) Approval provided the following conditions are met* 1) The synopsi^ sheets and the attached data sheets establish the emission ani operating limitations and are a part of the permit. The j synopsis and data sheets are based on the application for approval of emiss Loni dated February 5 mo with supplemental informatnon | submitted February 8. 1980 'The application Jand supplemental information are also considered part of this pemiit by reference. 2) Constructiorj must'commence, within mo years after the date of approval. I 3) The permitted will submit to the Technical Secretary semiannual reports of progress defining the status of construction, noting any design changes, modifications or alterations in the construction i schedule whi^h have or may have an effect upon the emission rates or ambient air quality levels. Such reports shall continue to be J .submitted un^il snch time as construction is certified as being complete. 4) ' Any emission I testing performed for purposes of demonstrating compliance wi|th the limitations set forth in Condition 1 shall be conducted in iaccordance with the methods described and referenced in Table- L the current Louisiana Air Control Commission Regulations. 5) The permit .tee! shall, within ISO days after certifying, the completion of constnctibn prepare and Submit to the Technical Secretary' a Teport detailing the actual emission rates as compared to those limitations specified in Condition 1. The report shall also include. but not be limited to, malfunctions and upsets. VVc 000012922 LOUISIANA EN /IRONMENTAL CONTROL COMMISSION iiir Quality Data Sheet Page 1 CONOCO CHEMICAL COMPANY Westlake ("Calcasieu") Location of plant: Description of location: 15. UTM 477 . Q Km E VMfi.S Km N mips north, intgrsprtinn nf Tnip^dal g Road anH Old Spanish Trail Estimated starting date of construction: April 1981 Estimated date opera tion will begin: Novenfoer 1987 Type of Dispersion Calcula tiors Used: CRSTER Pollutant NOx Time Period Annual S02 Ann/24/8 CO 8/1 Part Annual/24 EFFECTS OF AMBIENT AIR Calculated Maximum Ground Level Concentration 4 ug/M* 1/6/14 ug/M3 3/6 ug/M^ 3/24 ug/M3 Louisiana Air Control Commission Standard 100 80/365/1300 10000/40,000 75/260 NEW Q OR MODIFIED :mis SION SOURCES Stack I.D. # IIA Description Cracking Fumace IIB Cracking Fumace IIC Cracking Fumace IV-J Dock EDC Tank IV- K Dock VCM Vent V-A Vent Incinerator Operating Rate (Maximum) 17607 CFM 17607 CFM 22375 CFM 6 CFM 316 CFM 28817 CFM VCM Plant (Type of Source; Operating Schedule Hrs/Day Days/Wk Wks/Yr 24 7 49 24 7 49 24 7 48 24 7 52 3 1 52 24 7 52 0000129*3 I LOUISIANA. ENVIRONMENTAL GGKITOL COMMISSION Air Quality Data Sheet - Page 2 Conoco Chemical Company flake Charles VCM Plant) (Company* s Name) ________ V|iest1a1ce_________________ (Nearest Town) 1 EMISSIONS ARE LISTED USING THE UNITS LBS/HR nairas (Parish) ^ STACK ID IIA PER MITTED EM I S S I 0 1* s' Feet po CFH TSP 1 so2 ; , 1.1 NOx 12.9 II c 0.2 --------- Height 1.0 120 Temperature Flow Rate 550 17607 IIB 1 1.1 12.9 0.2 1.0 120 550 ` 17607 IIC IV-JIV- V- 7.3 17.3 6.7 1.5 2.0 120 550 - - -.11.9. - - 35 85 22375 6 IV- K ._ _ <0.1 _ 148 __ ___ Z5__________ ______ 316___ V- A 21.6 0.6 35.7 3.7 ' 0.7 75 125 28817 TABLE I SUMMARY OF EMISSIONS TONS/YR- - ..Incremental ^'Potential to Emit - Hydrocarbons Total Fugitive VCM Fugitive Other Hydrocarbon Fugiti ve Total Point Source VCM Point Source Other Hydrocarbon Point Sour *ce Particulates Carbon Monoxide Nitrogen Oxide ! Sulfur Dioxide 29.181 2.62 26.561 8.83 6.78 4.86 ' 40.25 7.95 129.51 59.32 Expanded ' Plant Total Allowable 86.713 18.062 68.651 26.63 11.18 15.45 107.87 16.11 244.97 68.45 Existing Plant . Total Allowable Total Net Chanqe 57.532 15.442 42.09 4636.0 60.2 4575.8 67.62 1784.16 223.9 9.13 29.181 2.62 26.561 -4609.37 - 49.02 -4560.35 + 40.25 -1768.05 + 21.07 + 59.32 1) The "Potential to Emit" rfas calculated from a base of existing allowable emissions and, therefore, only re resents the potential to emit above the present permit conditions. VVC 000012925