Document MGzQV0V9GNNYgwB95b3xnQR9k

/ffi LOUISIANA DIVISION INDUSTRIAL HYGIENE REPORT AN OPERATING UNIT OF THE DON CHEMICAL COMPANY DEPARTMENT FILE NUMBER CHLORINATED POLYETHYLENE PLANT TITLE LAD-CPE-89.01 INDUSTRIAL HYGIENE SURVEY PROTOCOL FOR CPE AUTHOR(S) SIGNATURE(S) * /. /P REVIEWER'S SIGNATURE A f^ DATE 3/23/89 SUMMARY/RECOMMENDATIONS SUMMARY: The employees that had a potential for exposure to noise, chlorine talc, tetrahydrofuran, and xylene were monitored using approved sampling and analytical methods. This data was generated during 1987 and 1988. Based on this data and the priority ratings from the chemical and physical agent inventories, future plans for exposure monitoring were made. CONCLUSIONS: The monitoring results for tetrahydrofuran, xylene and talc indicate that potential exposures to these materials were well below the exposure guidelines In 1987 and 1988. Noise exposure monitoring for 1987 and 1988 did not reveal any potential exposures above the OSHA PEL. Area and personnel exposure monitoring for chlorine continues to show a down trend. However there are still some problems with Instantaneous exposures to chlorine above the 1 ppm ceiling limit. For these locations and jobs approved respiratory protection is required until planned engineering controls are complet d. Surveillance of these areas have been enhanced by the addition of an area monitoring system. Personnel monitoring will also continue until the controls are completed. DISTRIBUTION Louisiana Division L. Adcock - 2306 H. M. Bell - 4701 Dr. M . Currier - 2303 M. E. Novi11 - 3502-E C. Barrios - 1901 *s. Biggs - 807 B. Heinse - 3502F Cover Sheet Only' Midland L. W. Rampy . 1803 M. G. Swank - 1803 J. E. LeBeau - 1803 G. W. Engdahl - 1803 R. D. Olson - 1803 S. M. Gorgacz - 258 A. W. Schaffer - 1803 R. R. Cook - 1803 * Other F. D. Axe - Pittsburg G. L. Meier - Strongsville J.A. Vopicka - Sarnia D. E. Crager - Freeport RESTRICTED: f r use within The Dow Chemical Company only. DO A 110739 CONFIDENTIAL TABLE OF CONTENTS I. IX. III. IV. V. VI. VII. VIII. IX. X. XI. XII. XIII. XIV. XV. XVI. XVII. XVIII. XIX. XX. XXI. XXII. XXIII. XXIV. PURPOSE DEFINING EMPLOYEE EXPOSURE/SAMPLING STRATEGY NOISE EXPOSURE EVALUATION CHLORINE EXPOSURE EVALUATION TALC EXPOSURE EVALUATION TETRAHYDROFURAN EXPOSURE EVALUATION XYLENE EXPOSURE EVALUATION APPENDIX I (DEFINITIONS OF DEGREE OF EXPOSURE RATINGS) APPENDIX II ( DEFINITIONS OF PRIORITY RATINGS) APPENDIX III ( STATISTICAL DECISION GUIDELINES) APPENDIX IV (PROCESS DESCRIPTION) APPENDIX V (PROCESS FLOW DIAGRAM) APPENDIX VI (JOB DESCRIPTIONS) APPENDIX VII (PLANT ROSTER) TABLE I (1987 PERSONNEL NOISE DATA) TABLE 2 (1988 PERSONNEL NOISE DATA) ATTACHMENTS 3-5 (PLANT AREA NOISE SURVEY) TABLE 3 (1987 PERSONNEL CHLORINE EXPOSURE DATA) ATTACHMENTS 7-11 (1987 PLANT AREA CHLORINE SURVEYS) TABLE 4 (1988 PERSONNEL CHLORINE EXPOSURE DATA) TABLE 5 (1987 PERSONNEL TALC EXPOSURE DATA) TABLE 6 (1987 PERSONNEL TETRAHYDROFURAN EXPOSURE DATA) TABLE 7 ( 1987 PERSONNEL XYLENE EXPOSURE DATA) CHEMICAL AND PHYSICAL AGENT INVENTORIES ^>0 A 1 10740 CONFIDENT T A[. CPE INDUSTRIAL HYGIENE PROTOCOL THE PURPOSE OF THIS PROTOCOL IS TO IDENTIFY, EVALUATE AND DOCUMENT THE POTENTIAL CHEMICAL AND PHYSICAL AGENT EXPOSURES IN THE PLANT;AND TO PLAN FOR FUTURE SURVEILLANCE AND CONTROL OF THESE EXPOSURES. WHEN THE EXPOSURE DATA INDICATES A PROBLEM, CONTROL MEASURES WILL BE RECOMMENDED. METHODS OF CONTROL INCLUDES ENGINEERING CONTROLS, ADMINIS TRATIVE CONTROLS, AND PERSONAL PROTECTIVE EQUIPMENT. ENGINEERING CONTROL METHODS INCLUDE CONTAINMENT, ISOLATION, SUBSTITUTION WITH A LESS TOXIC SUBSTANCE, LOCAL EXHAUST VENTILATION, GENERAL VENTILATION, AND CHANGE OF OPERATION PROCEDURE. ADMINISTRATIVE CONTROLS LIMIT EXPOSURE TIME THROUGH REMOTE OPERATION OR JOB ROTATION. PERSONAL PROTECTIVE EQUIPMENT MAY BE USED AS A LAST RESORT WHEN OTHER CONTROLS ARE NOT FEASIBLE OR UNTIL OTHER CONTROLS CAN BE IMPLEMENTED. EXPOSURE MONITORING SURVEY FOR 1987 AND 1988 INCLUDED: AGENT NOISE CHLORINE TALC TETRAHYDROFURAN XYLENE EXPOSURE GUIDELINE 90 DECIBELS 1 PPM CEILING 2 MG/M3 200 PPM TWA; 250 PPM STEL 100 PPM TWA; 150 PPM STEL SOURCE OSHA OSHA ACGIH ACGIH ACGIH 00 A 110741 CONFTOENTTAl DEFINING EMPLOYEE EXPOSURE/SAMPLING STRATEGY THE SURVEY PRIORITIES WERE DETERMINED FROM THE CHEMICAL AND PHYSICAL AGENT INVENTORIES AND FROM STATISTICAL EVALUATION OF THE EXISTING DATA. SETTING PRIORITIES IN THIS MANNER DEVELOPS AN EFFICIENT AND LOGICAL FRAMEWORK FOR AN INDUSTRIAL HYGIENE SURVEY. THE CHEMICAL AND PHYSICAL AGENT INVENTORY WAS USED TO MEET TWO BASIC REQUIREMENTS OF A REALISTIC SURVEY. 1. DETERMINE THE DEGREE OF EXPOSURE FOR EACH JOB CLASSIFICATION TO EACH CHEMICAL USED IN THE PLANT. THIS IS BASED ON THE NORMAL CONDITIONS OF USE AND THE PHYSICAL PROPERTIES OF THE MATERIAL. (APPENDIX 1) 2. DETERMINE A PRIORITY RATING FOR EACH JOB/AGENT COMBINATION THAT IS BASED ON THE DEGREE OF EXPOSURE AND THE TOXICITY OF THE AGENT. (APPENDIX 2) THE STATISTICAL GUIDELINES IN APPENDIX 3 WERE USED TO EVALUATE THE EXPOSURE DATA. THESE GUIDELINES ARE BASED ON THE FOLLOWING: 1. THE LOGNORMAL DISTRIBUTION IS USED TO MODEL LONG TERM OCCU PATIONAL EXPOSURES. THIS DISTRIBUTION IS CHARACTERIZED BY THE GEOMETRIC MEAN AND THE GEOMETRIC STANDARD DEVIATION. 2. MOST WORKPLACE ENVIRONMENTS HAVE GEOMETRIC STANDARD DEVIATIONS BETWEEN 1.5 AND 3.0. 3. FOR CHEMICALS THAT ARE DOSE-RATE INDEPENDENT, THE UPPER 95% CONFIDENCE LIMIT SHOULD BE USED TO TEST IF THE ARITH METIC MEAN IS BELOW THE EXPOSURE GUIDELINE. 4. FOR CHEMICALS THAT ARE DOSE-RATE DEPENDENT, A TOLERANCE LIMIT APPROACH SHOULD BE USED TO TEST IF THE 95TH PERCENTILE IS BELOW THE EXPOSURE GUIDELINE. ^0 A 11074? CONFIDENTIAL NOISE EXPOSURE EVALUATION EVALUATION CRITERIA THE OSHA PERMISSABLE EXPOSURE LIMIT (PEL) FOR NOISE IS THE CRITERIA USED TO EVALUATE NOISE EXPOSURE. THE PEL IS AN AVERAGE DOSE OF 90 DECIBELS (DB) ON THE A-WEIGHTED SCALE FOR AN EIGHT HOUR DAY. ALSO THERE SHOULD BE NOEXPOSURE TO CONTINUOUS NOISE ABOVE 115 DECIBELS (A). SAMPLING METHOD THE DUPONT MK-2 AUDIO DOSIMETER WAS USED TO MEASURE EMPLOYEE'S EXPOSURES TO NOISE. THE DOSIMETER MEETS OR EXCEEDS ALL CURRENT REQUIREMENTS BY GOVERNMENT AGENCIES IN THE UNITED STATES FOR PERSONNEL AUDIO DOSIMETERS. NOISE MEASUREMENTS WERE MADE USING AN 80 DB(A) THRESHOLD LEVEL AND A 90 DB(A) CRITERION LEVEL. THE THRESHOLD IS THE LEVEL THAT THE NOISE MUST EXCEED TO BE INCLUDED IN THE DOSE CALCUALATION. THE CRITERION IS THE LEVEL THAT WILL YIELD 100% DOSE IN EIGHT HOURS. TOXICOLOGICAL SUMMARY PROLONGED AND REPEATED EXPOSURES TO NOISE LEVELS ABOVE 90 DECIBELS MAY CAUSE SEVERE DAMAGE TO THE NERVES IN THE INNER EAR RESULTING IN HEARING LOSS. PERSONNEL MONITORING SUMMARY, 1987 BECAUSE HEARING PROTECTION IS REQUIRED IN ALL AREAS OF THE PLANT THAT ARE ABOVE 90 DECIBELS, THE NOISE DOSES THAT WERE DETECTED ARE ONLY POTENTIAL DOSES. SEVEN SAMPLES WERE COLLECTED ON THE JOBS WHERE THE LIKELIHOOD FOR NOISE EXPOSURE WAS THE GREATEST. NONE OF THE SAMPLES WERE ABOVE THE OSHA PEL FOR NOISE. DATA IS EXPRESSED AS PERCENTAGES OF THE PEL. JOB NUMBER OF SAMPLES WHSE LABORER (TRUCKLOADING) WHSE LABORER (BAGGING) ENVIRO-SPECIALIST MAINT-COORDINATOR OUTSIDE O.S. OUTSIDE S.O.T. O.T. 1 1 1 1 1 1 1 DURATION 380 MINS 386 MINS 287 MINS 438 MINS 437 MINS 439 MINS 392 MINS DOSE 55% 51% 21% 29% 19% 30% 20% PLEASE REFER TO TABLE 1 FOR MORE DETAILS. DO A 110743 CONFIDENTXAl PERSONNEL MONITORING SUMMARY 1988 BECAUSE HEARING PROTECTION IS REQUIRED IN ALL AREAS OF THE PLANT THAT ARE ABOVE 90 DB(A), THE NOISE DOSES THAT WERE DETECTED ARE ONLY POTENTIAL DOSES. SIX SAMPLES WERE COLLECTED IN THREE JOB CLASSIFICATIONS. NONE OF THE SAMPLES WERE ABOVE THE OSHA PEL FOR NOISE EXPOSURE. SEE TABLE 2. JOB it OF SAMPLES ' DURATION AVG HIGH RANGE WHSE LABORER (TRUCKLOADER) O.S. (BAGGING) OUTSIDE O.S. OUTSIDE S.O.S. 3 1 1 1 427-450 MINS 445 427 427 MINS MINS MINS 23% -- -- 33% 37% 84% 31% 14-33% --_ -- -- AREA NOISE MONITORING SUMMARY, 1988 IN GENERAL THE AREAS OF THE PLANT THAT ARE ABOVE 90 DB(A) ARE THE EXPRESSOR BUILDING AREA, THE FLUID BED DRYERS AREAS, THE AIR COMPRESSOR AREA, THE BLENDER AREAS BEHIND THE WAREHOUSE AND THE CYCLONE BLOWER AREAS UPSTAIRS ON BOTH TRAINS. THE COMPLETE AREA NOISE SURVEY IS SHOWN IN ATTACHMENTS 3-5. HIGH NOISE WARNING SIGNS ARE POSTED AROUND ALL AREAS OF THE PLANT THAT ARE ABOVE 90 DB(A). SAMPLING STRATEGY FOR NOISE IN 1989 AREA SURVEY - A COMPLETE SURVEY OF ALL PLANT AREAS WILL BE MADE TO ENSURE THAT AREA LEVELS HAVE NOT INCREASED SIGNIFICANTLY. PERSONNEL MONITORING - BASED ON THE CHEMICAL AND PHYSICAL AGENT INVENT ORIES FOR 1989, THE FOLLOWING PERSONNEL WILL BE MONITORED FOR NOISE EXPOSURE: JOB it OF SAMPLES CONTRACT WELDER CONTRACT PIPEFITTER OUTSIDE O.S. OUTSIDE S.O.S. 3 3 2 2 \\07A& 00 A C,ONF t CHLORINE EXPOSURE EVALUATION EVALUATION CRITERIA THE OSHA PERMISSABLE EXPOSURE LIMIT OF 1 PPM CEILING IS THE CRITERIA USED TO EVALUATE EXPOSURE TO CHLORINE. A CEILING LIMIT SHOULD NOT BE EXCEEDED FOR ANY PERIOD OF TIME. SAMPLING AND ANALYTICAL METHOD SUMMARY PERSONNEL SAMPLES FOR CHLORINE WERE OBTAINED USING A WOLCOTT PROBE IN CONJUNCTION WITH A DATA LOGGER. THIS EQUIPMENT MEASURES CHLORINE CONCENTRATIONS IN AIR CONTINUOUSLY,STORING THE HIGHEST THIRTY SECOND AVERAGES AS AN INDICATOR OF PEAK EXPOSURES FOR COMPARISION TO THE CEILING LIMIT. OTHER INFORMATION OBTAINED USING THIS TYPE OF EQUIP MENT IS THE EIGHT HOUR TIME WEIGTHED AVERAGE AND ALSO A REAL TIME PLOT OF TIME VERSUS CONCENTRATION FOR THE SAMPLING PERIOD. ALL OF THE SAMPLING EQUIPMENT WAS CALIBRATED BEFORE AND AFTER EACH SAMPLE WITH A KNOWN CONCENTRATION OF CHLORINE IN AIR USING A DYNACALIBRATOR. THE SAMPLING EQUIPMENT WAS CALIBRATED AND ANALYZED AT THE INDUSTRIAL HYGIENE DEPARTMENT. TOXICOLOGICAL SUMMARY OVEREXPOSURE BY THE INHALATION ROUTE WILL PRODUCE MARKED IRRITATION OF THE NASAL AND THROAT LININGS WITH POSSIBLE LUNG INJURY. THE LC50 FOR RATS AND MICE RESPECTIVELY IS 293 AND 137 PPM, AFTER AN INHALATION EXPOSURE OF 1 HOUR. CHLORINE IS ALSO CAPABLE OF PRODUCING BURNS TO THE EYES AND SKIN. PERSONNEL MONITORING SUMMARY, 1987 EIGHT SAMPLES WERE TAKEN IN THE OUTSIDE O.S. AND S.O.T. JOB CLASSI FICATIONS. NONE OF THE SAMPLES TAKEN IN THE OUTSIDE O.S. JOB CLASS WERE ABOVE THE OSHA PEL. THREE OF THE FOUR SAMPLES IN THE OUTSIDE S.O.T. JOB CLASS WERE SLIGHTLY ABOVE THE OSHA PEL, WITH THE HIGHEST SAMPLE AT 2.6 PPM FOR 30 SECONDS. THE EIGHT HOUR TIME WEIGHTED AVERAGES FOR ALL OF THE SAMPLES WERE BELOW THE DETECTION LIMITS (0.05 PPM). JOB 9 OF SAMPLES DURATION (MINS) AVG (PEAK) HIGH (PEAK) RANGE OUTSIDE O.S. OUTSIDE S.O. T. 4 4 334-361 <0.2 PPM 331-372 1.6 PPM 0.3 PPM<0.1-0.3 PPM 2.6 PPM 0.5-2.6 PPM PLEASE REFER TO TABLE 3 FOR MORE DETAILS. DO A 110745 CONFIDENTIAL. AREA MONITORING FOR CHLORINE SUMMARY, 1987 (ATTACHMENTS 7-11) AREA SAMPLES FOR CHLORINE WERE OBTAINED USING TWO SAMPLING METHODS. THE WOLCOTT PROBE WITH DATA LOGGER WAS USED FOR SAMPLING AROUND THE FLUME, THE FLOCCULATOR, AND THE CLARIFIER TO EVALUATE THE CONCENTRATION AND FREQUENCY OF CHLORINE EMISSIONS FROM THESE AREAS. A WOLCOTT PROBE WITH A DIRECT READING CHLORINE DOSIMETER WAS USED TO OBTAIN EXCURSION SAMPLES FROM AROUND THE TWO REACTOR AREAS DURING REACTOR TRANSFERS. THE RESULTS OF THE AREA SAMPLES SHOWED NO DETECTABLE AMOUNTS OF CHLORINE FROM THE FLOCCULATOR AND THE CLARIFIER. TWO AREA SAMPLES OF THE FLUME COVERING AN AVERAGE TIME PERIOD OF 253 MINUTES REVEALED ONLY TWO 30 SECOND DURATION PEAKS OF CHLORINE SLIGHTLY ABOVE THE OSHA PEL(1.2 PPM HIGH). FIVE AREA SAMPLES OF THE REACTOR AREAS SHOWED THE IMMMEDIATE AREAS AROUND THE WASH COLUMNS AS THE ONLY LOCATIONS WITH A POTENTIAL OF HAVING CHLORINE CONCENTRATIONS ABOVE 1 PPM. THE CHLORINE EMISSIONS THAT WERE DETECTED AROUND THE WASH COLUMN WERE ONLY PRESENT DURING REACTOR TRANSFERS AND VARIED IN CONCENTRATION AND DURATION. THE EMISSIONS FROM THESE AREAS RANGED FROM <0.1 TO 12 PPM. AN APPROVED RESPIRATOR FOR CHLORINE IS REQUIRED WHEN ENTERING THE RESTRICTED AREA AROUND THE WASH COLUMNS WHERE CONCENTRATIONS MAY EXCEED 1 PPM. IN ADDITION TO THE PROTECTIVE EQUIP MENT REQUIREMENTS PLANS TO ELIMINATE THESE EMISSIONS WERE MADE. ALSO INSTALLATION OF.A CONTINUOUS AREA MONITOR.FOR CHLORINE WAS BEGUN. PERSONNEL MONITORING SUMMARY, 1988 A TOTAL OF SIX SAMPLES WERE OBTAINED FROM THE OUTSIDE O.S. AND S.O.S. JOBS. FOUR OF THESE SAMPLES SHOWED NO 30 SECOND EXPOSURES DURING THE WORKDAY ABOVE 1 PPM. THE OTHER TWO SAMPLES INDICATED POTENTIAL EXPOSURES OF 4.3 AND 11.1 PPM FOR 30 SECONDS EACH DURING THE WORKDAY. THE 4.3 PPM OCCURRED WHEN THE OPERATOR WAS IN THE WASH COLUMN AREA (RESPIRATOR REQUIRED). THE 11.1 PPM OCCURRED WHEN THE OPERATOR WAS WORKING ON THE WASH COLUMN STATIC SCREEN (RESPIRATOR REQUIRED). JOB It OF SAMPLES DURATION (MINS) AVG HIGH (PEAK) (PEAK) RANGE OUTSIDE O.S. OUTSIDE S.O.S. 3 3 353-365 350-355 <1.8 PPM 11.1 PPM<0.05-: <1.5 PPM 4.3 PPM <0.05- PLEASE REFER TO TABLE 4 FOR MORE DETAILS. 00 A 11074b CONFIDFNT T Al SUMMARY OF CHLORINE EXPOSURE CONTROLS, 1987 TO ELIMINATE THE PRIMARY SOURCE OF CHLORINE EMISSIONS IN THE PLANT, WASTE WATER DRAINAGE FROM THE WASH COLUMNS AND NEUTRALIZERS WERE REROUTED FROM OPEN TRENCHES INSIDE THE PROCESS AREA BY SOLID PIPING TO AN ENVIROMENTAL TREATMENT SYSTEM. REDUCTIONS IN AREA CHLORINE LEVELS WERE SIGNIFICANT. BEFORE THESE CONTROLS THERE WAS A POTENTIAL FOR A MAJORITY OF THE REACTOR AREAS TO BE ABOVE 1 PPM DURING REACTOR TRANSFERS ONLY, DEPENDING ON PROCESS CONDITIONS AND WIND DIRECTION. THIS REQUIRED EXTENSIVE USE OF RESPIRATORY PROTECTION THROUGHOUT THE PLANT. AFTER THE CONTROLS WERE IMPLEMENTED, THE ONLY AREAS WITH A POTENTIAL FOR HAVING CHLORINE LEVELS ABOVE 1 PPM WERE THE IMMEDIATE AREAS AROUND THE WASH COLUMNS DURING REACTOR TRANSFERS. CURRENTLY THESE ARE THE ONLY RESPIRATOR REQUIRED AREAS OF THE PLANT. AS AN ADDED PRE CAUTION, TRAVEL INTO THE PROCESS AREAS IS RESTRICTED AND WARNING LIGHTS HAVE BEEN INSTALLED TO WARN PERSONNEL WHEN A REACTOR TRANSFER IS IN PROCESS. SUMMARY OF CHLORINE EXPOSURE CONTROLS, 1988 A CONTINUOUS AREA MONITORING SYSTEM FOR CHLORINE WAS INSTALLED TO ALERT PLANT PERSONNEL WHEN CHLORINE LEVELS EXCEEDED 1 PPM AND TO EVALUATE THE EFFECTIVENESS OF PRESENT AND FUTURE CONTROL MEASURES. ADDITIONALLY, SUCTION BLOWERS WERE INSTALLED ON THE WASH COLUMN OVERS LINES TO DIVERT CHLORINE EMISSIONS FROM THE PROCESS AREA TO THE CHLORINE SCRUBBER. ACCORDING TO THE CONTINUOUS AREA MONITOR DATA THIS HAS REDUCED THE FREQUENCY OF CHLORINE EMISSIONS ABOVE 1 PPM FROM THESE SOURCES, BUT HAS NOT ELIMINATED THEM. THESE AREAS REMAIN RESTRICTED UNTIL A PERMANENT SOLUTION IS FOUND. CONSIDERABLE WORK IS BEING DONE IN THE ENVIROMENTAL TREATMENT SECTION OF THE PLANT TO OPTIMIZE TREATMENT OF THE WASTE WATER WITH SODIUM THIOSULFATE TO NEUTRALIZE THE RESIDUAL CHLORINE. THE PLANT IS WORKING CLOSELY WITH THE RESEARCH ANALYZER GROUP ON THIS PROJECT. SUMMARY OF FUTURE CONTROL PLANS A MAJOR FUTURE PLAN TO ELIMINATE POTENTIAL CHLORINE EXPOSURE IN THE PLANT IS THE INSTALLATION OF A LARGER CAPACITY CHLORINE SCRUBBER. WORK ON THIS INSTALLATION SHOULD BEGIN SOMETIME IN THE FOURTH QUARTER OF 1989. BENEFITS WILL BE THE ABILITY TO TIE ALL OF THE POTENTIAL CHLORINE EMITTING VENTS INTO THE SCRUBBER. UNTIL THEN EFFORTS TO REDUCE EMISSIONS FROM THE WASH COLUMN VENTS USING THE SUCTION BLOWER SYSTEM AND PRESENT SCRUBBER WILL CONTINUE. SAMPLING STRATEGY FOR CHLORINE, 1989 BASED ON THE PREVIOUS MONITORING DATA, THE FOLLOWING PERSONNEL SAMPLES WILL BE COLLECTED IN 1989. JOB // OF SAMPLES OUTSIDE O.S. OUTSIDE S.O.S WORKING OVER WASH COLUMN STATIC SCREEN 3 3 2 TALC EXPOSURE EVALUATION- EVALUATION CRITERIA THE AMERICAN CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENIST (ACGIH) THRESHOLD LIMIT VALUE (TLV)--TIME WEIGHTED AVERAGE (TWA) OF 2 MG/M3 IS THE CRITERIA USED TO EVALUATE POTENTIAL EXPOSURES TO TALC CONTAINING NO ASBESTOS. SAMPLING AND ANALYTICAL METHOD SUMMARY A SIBATA P-5 DIRECT READING DUST INDICATOR WAS USED TO OBTAIN BREATHING ZONE SAMPLES FOR POTENTIAL EXPOSURE TO RESPIRABLE TALC. THE INSTRUMENT MEASURES DUST FROM SUBMICRON TO 10 MICRONS IN SIZE. MEASURING RANGE IS 0.001 TO 10 MG/M3. ACCURACY IS PLUS OR MINUS 105! AS COMPARED TO GRAVIMETRIC METHOD USING STEARIC ACID. TOXICOLOGICAL SUMMARY THERE IS SOME EVIDENCE THAT TALC CONTAINING NO ASBESTOS FIBERS MAY CAUSE A MILD PNEUMOCONIOSIS AFTER 10 TO 30 YEARS OF PROLONGED OVER EXPOSURE. THIS CONDITION MAY OR MAY NOT EXIST WITH LUNG FUNCTION IMPAIRMENT. EXPOSURE OTHER THAN INHALATION MAY PRODUCE MECHANICAL IRRITATION SIMILAR TO ANY SOLID. PARTICLE. BREATHING ZONE SAMPLING SUMMARY, 1987 TWO SAMPLES WERE OBTAINED ON THE O.T. WHILE LOADING BAGS OF TALC ON THE BAG SLITTER. BOTH OF THE SAMPLES SHOWED POTENTIAL EXPOSURE TO BE BELOW THE TLV FOR RESPIRABLE TALC. DUE TO THE DUST RESPIRATOR RE QUIREMENTS WHEN HANDLING TALC, THE DATA REPRESENTS POTENTIAL EXPOSURE ONLY. JOB // OF SAMPLES DURATION (MINS) POTENTIAL EXPOSURE O.T.-LOADING TALC 1 26 0.1 MG/M3 O.T.-- LOADING TALC 1 9 PLEASE REFER TO TABLE 5 FOR MORE DETAILS. SAMPLING STRATEGY FOR 1989 0.1 MG/M3 BASED ON THE PREVIOUS DATA TWO SAMPLES ON THE TALC LOADING JOB WILL BE OBTAINED. ALSO AN AREA DUST SURVEY OF THE ENTIRE WAREHOUSE INCLUDING THE WEIGH FEEDER ROOM WILL BE MADE TO ENSURE THAT AMBIENT LEVELS OF RESPIRABLE DUST ARE NOT EXCESSIVE. DO A 110748 CONFIDENTIAL TETRAHYDROFURAN EXPOSURE EVALUATION EVALUATION CRITERIA THE AMERICAN CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENIST (ACGIH) THRESHOLD LIMIT VALUE (TLV) WAS USED TO EVALUATE EXPOSURE TO TETRA HYDROFURAN. THE LIMIT IS 200 PPM ON A TIME WEIGHTED AVERAGE BASIS AND THERE IS ALSO A SHORT TERM EXPOSURE LIMIT (15 MINUTES) OF 250 PHI. SAMPLING AND ANALYTICAL METHOD TWO SAMPLING METHODS WERE USED TO EVALUATE EXPOSURE TO TETRAHYDROFURAN. A CHARCOAL ADSORBENT TUBE IN CONJUNCTION WITH A CONSTANT FLOW AIR SAMPLING PUMP WAS USED TO OBTAIN SHORT TERM EXCURSION SAMPLES FOR COMPARISION WITH THE SHORT TERM EXPOSURE LIMIT. A 3M ORGANIC VAPOR MONITOR BADGE (CHARCOAL ADSORBENT-PASSIVE DOSIMETER) WAS USED TO OBTAIN EIGHT HOUR SAMPLES FOR COMPARISION TO THE TLV-TWA. TOXICOLOGICAL SUMMARY ACUTE EFFECTS OF OVEREXPOSURE BY THE INHALATION ROUTE ARE CENTRAL NERVOUS SYSTEM EFFECTS CHARACTERIZED BY HEADACHES, DIZZINESS, AND NAUSEA. POSSIBLE CHRONIC EFFECTS INCLUDE LIVER AND KIDNEY DAMAGE DUE PRIMARILY TO IMPURITIES THAT MAY BE PRESENT IN THE TETRAHYDROFURAN. EYE AND SKIN CONTACT WITH THE LIQUID MAY CAUSE IRRITATION. PERSONNEL MONITORING SUMMARY, 1987 ONE EXCURSION SAMPLE WAS OBTAINED DURING OPERATION OF THE NEW CHLORIDES ANALYTICAL INSTRUMENT. THE RESULT WAS LESS THAN 27 PPM TETRAHYDRO FURAN ON THE AVERAGE FOR 5 MINUTES. THREE TIME WEIGHTED AVERAGE SAMPLES WERE OBTAINED ON LAB PERSONNEL ON DAYS WHEN USING TETRA HYDROFURAN. NONE OF THE SAMPLES WERE ABOVE THE TLV-TWA. TETRA HYDROFURAN IS USED IN A PRODUCT PH ANALYSIS AND IS HANDLED UNDER A LAB FUME VENTILATION HOOD. JOB If OF SAMPLES DURATION (MINS) AVG (PPM) HIGH (PPM) RANGE (PPM) ASST. CHEMIST ASST. CHEMIST (CHLORIDES TEST) 3 1 350-416 <8.5 25.0 <0.2-25.0 5 <27.0 PLEASE REFER TO TABLE 6 FOR MORE DETAILS. DO A 110749 CONFIDENTIAL XYLENE EXPOSURE EVALUATION EVALUATION CRITERIA THE AMERICAN CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENIST THRESHOLD LIMIT VALUE (TLV) WAS USED TO EVALUATE EXPOSURES TO XYLENE CONTAINING MIXED ISOMERS. THE LIMIT IS A TIME WEIGHTED AVERAGE OF 100 PPM AND ALSO A SHORT TERM EXPOSURE LIMIT (15 MINUTES) OF 150 PPM. SAMPLING AND ANALYTICAL METHOD THE 3M ORGANIC VAPOR MONITOR (CHARCOAL ADSORBENT-PASSIVE DOSIMETER) WAS USED TO OBTAIN PERSONNEL SAMPLES OF LAB PERSONNEL PERFORMING PRODUCT TESTS USING XYLENE. THE ANALYTICAL METHOD CONSISTED OF DESORBING THE CHARCOAL IN CARBON DISULPHIDE AND ANALYZING AN' ALIQUOT OF THE SAMPLE BY GAS CHROMATOGRAPH. ANALYSJS WERE PERFORMED BY THE ENVIROMENTAL DE PARTMENT LAB. TOXICOLOGICAL SUMMARY ACUTE OVEREXPOSURE.BY.THE.INHALATION ROUTE MAY PRODUCE SEVERE IRRITANT AND NARCOTIC EFFECTS.* THERE HAVE BEEN SOME REPORTS OF BLOOD AND LIVER EFFECTS FROM BOTH CHRONIC OVEREXPOSURE AND VERY HIGH ACUTE EXPOSURES TO XYLENE. REPEATED SKIN CONTACT MAY PRODUCE DERMATITIS. PERSONNEL MONITORING SUMMARY, 1987 THREE SAMPLES WERE OBTAINED ON LAB PERSONNEL WHILE PERFORMING PRODUCT ANALYZES USING XYLENE. DURATION OF THE SAMPLES WAS FROM 10-60 MINUTES. NONE OF THE SAMPLES WERE ABOVE THE EVALUATION CRITERIA. ALL ANALYSIS USING XYLENE ARE REQUIRED TO BE PERFORMED UNDER A LAB FUME VENTILATION HOOD. PLEASE REFER TO TABLE 7 FOR MORE DETAILS. JOB # OF SAMPLES ASST. CHEMIST (GEL COUNT TEST) 3 DURATION (MINS) 10-60 AVG (PPM) HIGH (PPM <1.2 <1.4 00 A 110750 CONFIDENTIAL APPENDIX 1 DEGREE OP EXPOSURE RATINGS DE NEC Description Within this Job assignment1, the normal conditions of use and the physical properties of the material indicate that both inhalation and skin exposures are likely to be no more than negligible. Characterized by remote handling operations with the equipment isolated from the employees' work area. There is no equiva lent exposure category on the T.I.M.E. system since the cate gories on the T.I.M.E. system serve primarily to determine appropriate handling precautions for known exposure situations. Typical Job assignments which might be assigned a DE rating of 'NEG* include computer personnel and secretaries. LOW Within this Job assignment, the normal conditions of use and the physical properties of the material indicate th&t both inhalation and skin exposure are likely to be no more than minor. Characterized by work around closed systems; sampling, laboratory work, packaging or dumping of materials with low to moderate volatility or dustiness with sufficient ventilation. The equivalent T.I.M.E. system category would be 'LOW'. MOD Within this Job assignment, the normal conditions of use and the physical properties of the material indicate that there is a potential for moderate inhalation and/or skin exposures. Characterized by manual handling of materials such as sampling, packaging, filter changing or dumping of materials with low to moderate volatility or dustiness using potentially insufficient ventilation. This category may also Include handling of materials with high volatility or dustiness if sufficient local exhaust ventilation is present. The equiva lent T.I.M.E. system category would be 'MOD'. HIGH Within this Job assignment, the normal conditons of use and the physical properties of the material Indicate that there is a potential for high inhalation and/or skin exposures. Characterized by manual operations such as sampling, packaging or dumping of materials with high volatility or dustiness without sufficient local exhaust ventilation. Control is generally achieved through extensive use of protective equip ment. The equivalent T.I.M.E. 'system category would he 'HIGH'. Job assignment ijs defined as a group of employees doing the same type of work which results in their having comparable exposures. LH:sb 12/86 DO A 110751 CONFIDENTIAL APPENDIX 2 PRIORITY RATINGS The priority rating is useful for representing and communicating the risks present in particular work situations. It is also helpful in establishing industrial hygiene priorities. The priority rating is based on two things: the conditions of use and physical properties (Degree of Exposure Rating), and the toxicity and warning properties of the material (Industrial Hygiene Guide if available). Within a given plant, the rating for. a single chemical may be different for various job assignments because of the varying degree of exposure. Industrial hygienists use the following six categories as guidelines for assigning the priority ratings. PR Description 5 The degree of exposure rating, the toxicity of the material, and the warning properties are such that, for this job assignment under normal operating conditions, there is a negligible potential for exposures t approach or exceed acceptable levels. No further exposure evaluation is needed. t 4 The degree of exposure rating, the toxicity of the material, and the warning properties are such that, for this job assignment under normal operating conditions, there is a minor potential for exposures to approach or exceed acceptable levels. Only minimal monitoring may be needed to confirm this rating. 3 The degree of exposure rating, the toxicity of the material, and its warning properties are such that, for this job assignment under normal operating conditions, there is a moderate potential for exposures to approach or exceed acceptable levels. Employees' exposures should be monitored regularly or subjectively evaluated by a health professional. 2 The degree of exposure rating, the toxicity of the material, and the warning properties are such that, for this job assignment under normal operating conditions, there is a significant potential for exposures to "approach or exceed acceptable levels. Periodic monitoring should be initiated and employees' exposure levels reevaluated on a regular basis. DO A H0752 CONFIDENTIAL 6 1 The degree f exposure rating, the toxicity of the material, and the warning properties are such that, for this job assignment under normal operating conditions, there is a high potential for exposures to exceed acceptable levels. Immediate action by plant supervision and industrial hygiene is necessary to evaluate and control employees' exposure levels. Periodic follow-up documentation is needed to ensure control measures are effective. T This "T" category is available to indicate that training has been con ducted on certain chemicals which may be encountered on a nonroutine or emergency basis. No degree of exposure* is assigned with this "T" rating since exposures may never occur or may occur to an unpredict able degree. Situations which may be appropriate for a "T" priority rating include: a. For Security, Fire and Emergency Response Groups - Typically, training is conducted on selected chemicals which may be encountered in an emergency situation. b. For Service Groups - Training may be conducted on chemicals which are not part f a group's own inventory, but which have the potential for being encoun tered based on the type and location of the job being performed. Note: A dash (-) is used under degTee of exposure when a "T" is assigned as a priority rating. riO A ^07^3 a80868,14 APPENDIX 3 \ S. Norwood STATISTICAL DECISION GUIDELINES For acceptable workplace conditions when the estimated geometric standard deviation is 2.5 i % TLV 00 A 110754 CONFIDENTIAL APPENDIX 4 process Description The CPE Plant, Block 19 of the Louisiana Division, is the production facility of Tyrin* Brand CPE elastomers and resins. The following description is current as of March, 1986. A block flow diagram is shown in Figure 1. CPE PRODUCTION PROCESS: Chlorinated polyethylene (CPE) is produced in the reaction of high density polyethylene (HDPE) and chlorine in an aqueous slurry. The operation is remotely controlled, except for sampling, and semi-continuous - the reaction and neutralization steps are batch processes, and the drying and bagging steps are essentially continuous processes. HDPE is produced in the polyethylene "B" production plant, and is transferred through a pipeline to several storage silos in the CPE Plant. Chlorine is obtained via pipeline from a chlorine production facility within the Division. HDPE, in an aqueous slurry, is fed to a reactor along with additives. The slurry is chlorinated in a batch process. After dewatering, the acidic resin is transferred to a neutralizer, where caustic is added. The neutral resin is fed to the dryers continuously and an anti-blocking agent (talc) is introduced. The dryer resin is then blended for product consistency and finally packaged in bags for shipment. ^Trademark of the Dow Chemical Company DO A 110755 CONFTDFNTTAL ^APPENDIX 5 PROCESS FLOW DIAGRAM 6 r to -A C JOO At IP rt c0 to etimtAu men TKBATrtenT CAb:un CAANXATf Of**KaCB ere r^-e $*4$ %Ua^ sauj DO A 110756 CONFIDENTIAL W>Ul (*'**'* If. * At'-VTI (.I7..T 3/fJ APPENDIX 6 JOE DESCRIPTION Position Title Operations O.T.Incumbent' Department CPE Plant. LocationLouisiana _________ Supervisor Shift Supervisor Title_ Date June 30, 1980________________________________ Prepared By T-* D* Bauder JOB SUMMARY: (why does this job exist - briefly describe general purpose of this j b) Under the direction of the shift supervisor sssists'the S.O.T. and O.S. where necessary and performs certain routine operations and minor maintenance. SPECIFIC DUTiES: (describe the duties you personally perform beginning with the most important. State the frequency, I.e. daily, weekly, monthly and percent of time on each.) The following duties are performed daily: 1. Catches neutralizer, fluid bed dryer, and blender samples and runs analysis to assist operations. 2. Maintains wetting agent and anti-block areas. 3. Reblends out-of-specification CPE. A. Maintains good housekeeping throughout the plant. 5. Maintains all air filter systems including pulseaire cages and socks. 6. Assists in preventive and operational maintenance. ^107^7 DO & CONF T RKOW-HJU1: (ski Us required) Traininq/experiencc: Receives training from other operations O.T.'s and* shift supervisors. Minimal! training is 3 weeks. Human Relations: Must be able to communicate well with the shift supervisor to inform him of any operational problems. PROBLEM-SOLVING; Complexity of Duties; (describe the most difficult or complex part f this job Recognizing and reporting operational or maintenance problems In the plant. Thinking Environment; (to what extent does this Job require analysis, evaluatic decision-making? To what extent are these thinking requirements affected by established standards or routin * ^ Job duties are according to established standards and routines.' DO A 110758 -2- CONFIDENTIAL ACCOUNTABILITY: Freedom to Act and Impact Assignment, Review 6 Approval of Work: (Who assigns your work, what instructlc are provided, who reviews and approves your work?) Receives supervision and direction from shift supervisor who reviews and approves his work, however, individual job direction can come from the O.S. or S.O.T. WORKING CONDITIONS: Physical Effort Required: Performing operational or breakdown maintenance may require some heavy lifting. The operator routinely lifts bags up to 55 pounds in weight in maintaining the anti-block area and reblending out-of-specification CPE. Office Environment: Not an office job. SAFETY CONDITIONS: Works around numerous pieces of rotating equipment. In the course of maintaining the anti-block areas come in contact with dusts which require the wearing of protective dust masks. When sampling neutralizers is in the presence of hot water, hot acid, or hot caustic mixtures which require proper training and appropriate caution. D0 A 110759 -3- CONFIDENTIAL JOB DESCRIPTION % Position Title Senior Ooerations Technician Incumbent * Department CPE Plant Location Louisiana Supervisor Shift Supervisor Title Date June 30, 1980 Prepared By R. D. Bauder JOB SUMHARY: (why does this job exist - briefly describe general purpose of this job) Under the direction of the shift supervisor operates the drying and blending systems, coordinates packaging, operates the plant air system, and performs routine operational and breakdown maintenance to Insure smooth, efficient plant operation. SPECIFIC DUTIES: (describe the duties you personally perform beginning with the most important. State the frequency, t.e. daily, weekly, monthly and percent of time on each.) The following duties are performed on a dally basis: 1. Coordinates with the operations specialist on hold tank operation to maintain a uniform feed slurry for the drying system. 2. Operates the fluid bed dryer and associated equipment to maintain a maximum dry resin output consistent with the'rest of the plant's operation. 3. Loads blenders with resin from the drying and reblend systems to Insure availability of prime resin to be packaged on days. . 4. Transfers resin from the blenders to the packaging area to provide maximum bagging rates. 5. Makes "rounds" to check the operation of equipment. 6. Performs breakdown maintenance to keep the plant operational. DO A 110760 confidential KNOW-HOW: (skills r quired) Training/experience: Receives training from other S.O.T.'a, O.S.'s, and shift supervisors. Minimum training Is 3 weeks. The operator should have a basic understanding of the equipment and procedures in the drying/packaging area in order to perform maintenance and make operational adjustments. Human Relations: The operator must communicate well with the shift supervisor to inform him f problems. He must relath well with other operators In order to have smooth plant operations. PROBLEM-SOLVING: Complexity of Duties; (describe the most difficult or complex part of this J b. Matching drying rate to reactor output to maximize plant capacity. This involves operational changes on the control of the fluid bed dryer and efficient scheduling of blender capacity. Thinking Environment: (to what extent does this job require analysis, evaluatl decision-making7 To what extent are these thinking requirements affected by established standards or routin Routine operation of the plant is according to established standards and routines. The operator must be able to recognize problems In the plant and take Initial steps for correction. 00 A 110761 CONFIDENTIAL -2- ACCOUNTABILITY: Freedom to Act and Impact Assignment. Review 6 Approval of Work: (Who assigns your work-, what Instruct! are provided, who reviews and appr ve your work7) Work assignment is provided by the shift supervisor who reviews and approves work. Instruction is according to routine with any special work requiring more detailed Instruction. WORKING CONDITIONS: Physical Effort Required: Performing operational or breakdown maintenance may require some heavy lifting. Office Environment: hot an office job. SAFETY CONDITIONS: The S.O.T. work around numerous pieces of rotating equipment. The operation of the air compressor system require work in a noisey environment where ear protection is required. DO A 11076? confidential -3- JOS DESCRIPTION Position Title Operations Specialist_________ Incumbent_________ _______ ___ DepartmentCPE Plant;__________________________________ location Supervisor Shift Supervisor Title ____________________________ DateJune 16, 1980 Prepared ByR. D. Bauder JOB SUMMARY: (why does this j'ob exist - briefly describe general purpose of this job) Under the direction of the shift supervisor operates the premix area, reactors, and neutralizers to produce some 25 different grades of CPE. He coordinates all plant functions for maximum safe operation, provides training for the development of younger operators, and performs operational and breakdown maintenance. SPECIFIC DUTIES: (describe the duties you personally perform beginning with the most important. State the frequency, i.e. daily, weekly, monthly and percent of time on each.) The following duties are performed daily: Coordinates the receipt of polyethylene and caustic from supplier plants. Sets up and maintains prescribed run conditions for loading and operating the reactors. Based on lab analysis of resin properties, consults with"the shift supervisor to make changes in reactor conditions. Uses the PDP-8 and PDP-14 to "trouble-shoot" and correct process hang-ups. Examines reactor samples for reactor glass damage and resin particle growth. Inspects reactors for chlorine leaks and symptoms of damage. Moves CPE slurry from the reactor across acid Sweco's through the wash column and into the neutralizers balancing acid decanting efficiency and move-over time. Operates the neutralizers to provide cool, neutral, low sodium resin for the drying syst< Works with the S.O.T. to maximize overall plant capecity and provide back-up knowledge for the drying system. Directs the activities of the O.T.'s to assist in smooth plant operation. Trains new operators. Acts as lead man for maintenance activities. Relieves the shift supervisor in his absence with full responsibility for the plant's operation and operator safety. 00 A 110763 CONFIDENTIAL KNOW-HOW: (skills required) Training/experience: The operator should have a working knowledge of all areas of the plant in order to provide training and back-up knowledge for the S.O.T. and O.T.'s and to relieve their safely and efficiently in their absence. Minimum formal training for operations is 3 weeks. Minimum training before relieving the shift supervisor is 4-6 months. Human Relations: The operator must have good human relations skills to effectively communicate with and direct the activities of lower classification operators for smooth plant operations. PROBLEM-SOLVING: Complexity of Duties: (describe the most difficult or complex part of this job. Reactor starts for maximum smooth plant operation. Reactor program changes to keep CPE resin properties in specification. Changes for safe operation when problems prevent normal operations. Thinking Environment: (to what extent does this job require analysis, evaluation decision-making? To what extent are these thinking requirements affected by established standards or routine Routine operation of the plant is according to established standards and routines. Upset or emergency situations require immediate analysis and decision making. DO A 110764 CONFIDENTIAL * -2- ACCOUNTABILITY: Freedom to Act and Impact Assignment. Review & Approval of Work: (Who assigns your work, what instructions are provided, who reviews and appr ves your work?) Work assignment is provided by the shift supervisor who reviews and approves work. When relieving the shift supervisor work assignment is provided by the plant Production Supervisor who reviews the work. Operational adjustments are made independently without prior approval of supervisor within established guidelines. WORKING CONDITIONS: Physical Effort Required: Performing operational or breakdown maintenance may requite some'heavy lifting. Office Environment: Not an office job. SAFETY CONDITIONS: A working knowledge of every piece of equipment and all chemicals used in the plant is an obsolute necessity for smooth and safe plant operation. During an upset condition, the operator under the direction of the shift supervisor will modify operations or perform an orderly shutdown and evacuation to insure a maximum in personnel and equipment safety. DO A 110765 -3- CONFIDENTIAL  ADDITIONAL INFORMATION: (Add any information not requested and/or stated in previous sections that would help to understand this job.) The CPE shift composition under the supervision of the shift supervisor is: 2 - O.S. 1 - S.O.T. 2 - O.T. One O.S. is responsible for operations and the other is used for relief of all classifications including shift supervisor. The outside or relief O.S. serves as lead man on maintenance and is a "trouble-shooter" in all areas of the plant. The operations and relief O.S.'s rotate on a bi-weekly basis. 5/5/80 /och 00 A 110766 -A- CONFTDFNTTAL APPENDIX 7 NAME Antoine, Ervin Ashford, Jim Augustus, Richard Bahr, Wayne Banta, Lorraine Barbin, Herbert Barrios, cy Bauder, Bob Boudreaux, Henry Bcwman, Larry Callendar, Iawrence Carles, Francis Craven, Pat Danehcwer, Debbie Dessell, Freddie Dufour, Cliff Filleccia, Russ Garza, Linda Hartford, Michael Heersema, Mark Hanegan, Tim Jeanpierre, Lester Johnson, Wayne Kuhlmeier, Ray LeBlanc, Gary LeBlanc, Bobby LeBlanc, I. J. Miles, Bruoe Morales, Randy Morel, J. W. Morse, Jamie Feavy, Ace Pero, Randy Porto, mil Regira, Mark Roberts, Lee Simmers, Zack Smith, Charles Sparkman, lewis Stehr, Betty Thurston, Curtis Williams, Ralph Williams, Ron Woolfley, Chris CPE PLANT PERSONNEL ROSTER CLASSIFICATION MASTER 0. S. #1 432502 Technical 430434 0. T. 434133 Technical 144753 Clerical 433859 Asst. Chemist 433617 Superintendent 430875 Technical 431876 0. T. 434291 Material Controller 433657 Asst. Chemist 433998 0. S. #2 433371 0. S. #2 432789 S. 0. T. #1 434134 Shift Supervisor 431980 S. 0. T. #1 434205 Environment Specialist ' 431496 Warehouse 433501 Warehouse 433971 Technical 434602 0. S. #1 433416 Asst. Chemist 432267 S. 0. T. #1 433363 Production Supervisor 069866 S. 0. T. #1 433344 0. S. #2 432579 Maintenance 0. S. 433502 Technical 433957 0. S. #2 433227 0. S. #1 432495 Asst. Chemist 433999 Training Supervisor 431175 Asst. Chemist 434040 S. 0. T. #2 433644 S. 0. T. #2 434002 S. 0. T. #2 433425 S. 0. T. #2 434217 Maintenance Coordinator 431354 Shift Supervisor 430999 Sr. Asst. Chemist 433378 Warehouse 202502 0. T. 432698 0. S. #1 432505 Technical 432846 DO A 110767 CONFIDENTIAL TABLE 1. EMPLOYEE'S POTENTIAL TIME-WEIGHTED AVERAGE EXPOSURESTO NOISE AT THE CHLORINATED POLYEHYLENE PLANT, LOUISIANA DIVISION, 1987. SAMPLING DURATION (MINUTES) SAMPLE NUMBER JOB EXPOSURE GUIDELINE15 380 386 287 438 437 439 392 08737-6 08737-7 08737-5 08737-1 08737-2 08737-3 08737-0 LABORER-TRUCKLOAD LABORER-BAGGING ENVIRO-SPECIALIST MAINT-COORDINATOR OUTSIDE O.S. OUTSIDE S.O.T. OUTSIDE O.T, EMPLOYEE NUMBER 433-94-3211j 438-11-4061 431496 431354 432505 433644 432789 POTENTIAL NOISE EXPOSURE{PERCENT OF ALLOWABLE DOSEC 100% 55% 51% 21% 29% 19% 30% 20% a. ALL EXPOSURE DATA LISTED REPRESENTS POTENTIAL EXPOSURE ONLY, DUE TO THE REQUIREMENT OF HEARING PROTECTION USAGE IN PLANT AREAS WITH NOISE LEVELS 90 DECIBELS (A) OR ABOVE. b. EXPOSURE GUIDELINE USED IS THE OSHA PERMISSABLE EXPOSURE LIMIT OF 90 DECIBELS (A) FOR AN EIGHT HOUR AVERAGE. c. NOISE EXPOSURE DATA IS EXPRESSED AS A PERCENTAGE OF THE OSHA PER MISSABLE EXPOSURE LIMIT. TO EXPRESS DATA IN TERMS OF THE LOUISIANA DIVISION NOISE STANDARD, MULTIPLY THE NUMBERS BY TWO. d. HEBERT BROTHERS EMPLOYEE D0 A 110768 CONFIDENTIAL TABLE 2. EMPLOYEE'S POTENTIAL TIME-WEIGHTED AVERAGE EXPOSURESV) NOISE AT THE CHLORINATED POLYETHYLENE PLANT, LOUISIANA DIVISION, 1988. SAMPLING SAMPLE JOB EMPLOYEE POTENTIAL NOISE DURATION NUMBER NUMBER EXPOSURE; PERCENT (MINUTES)_____________________________________________________ OF ALLOWABLE DOSEc EXPOSURE GUIDELINE1* 100% 427 450 449 445 427 427 09123-1 09123-2 09123-3 09123-4 09123-5 09123-6 LABORER -TRUCKLOAD*? 433-94-3201 LABORER - TRUCKLOAD*? LABORER - TRUCKLOAD*1 437-40-3384 433-94-3211 O.S.- BAGGING 433616 OUTSIDE O.S. 434291 OUTSIDE S.O.S. 432579 14% 21% 33% 37% 84% 31% a. ALL EXPOSURE DATA LISTED REPRESENTS POTENTIAL EXPOSURE ONLY, DUE TO THE REQUIREMENT OF HEARING PROTECTION USAGE IN PLANT AREAS WITH NOISE LEVELS 90 DECIBELS (A) OR ABOVE. b. EXPOSURE GUIDELINE USED IS THE OSHA PERMISSABLE EXPOSURE LIMIT OF 90 DECIBELS (A) FOR AN EIGHT HOUR AVERAGE. c. NOISE EXPOSURE DATA IS EXPRESSED AS A PERCENTAGE OF THE OSHA PERMISSABLE EXPOSURE LIMIT. TO EXPRESS DATA IN TERMS OF THE LOUISIANA DIVISION NOISE STANDARD, MULTIPLY THE NUMBERS BY TWO. d. HEBERT BROTHERS EMPLOYEE. DO A 110769 CONFIDENTIAL TRAIN I - UPSTAIRS BL BL CPE AREA NOISE SURVEY, 1988 NOISE LEVELS DECIBELS (A ) DO A 1 1 0 7 7 1 CONFTDFNTTAL train n - second deck AREA NOISE LEVELS - (dbA) E<- CPE AREA NO ISE SURVEY, 1988 NOISE LEVELS DECIBELS (A ) 00 A 110772 C O N F T D F N T IA L TABLE 3. EMPLOYEE'S POTENTIAL INSTANTANEOUS AND TIME-WEIGHTED AVERAGE EXPOSURES *TO CHLORINE AT THE CPE PLANT, LOUISIANA DIVISION, 1987. SAMPLING DURATION (MINUTES) SAMPLE NUMBER JOB 349 334 355 372 331 375 350 360 244 242 242 263 EXPOSURE GUIDELINE0 08736-7 08736-4 08736-2 08736-3 08736-5 08736-6 08736-8 08736-1 08736-9 08736-10 08736-11 08736-12 OUTSIDE O.S. OUTSIDE o.s. OUTSIDE O.S. OUTSIDE o.s. OUTSIDE S.O.T. OUTSIDE S.O.T. OUTSIDE S.O.T. OUTSIDE S.O.T. FLOCCULATORd CLARIFIER FLUME. FLUME EMPLOYEE NUMBER INSTANTANEOUS L TIME- (PPM) WEIGHT! AVERAG! ____________________________ CfPMj 432502 432789 433371 433363 434002 434134 433644 433425 1.0 CEILING LIMIT <-o.ie c0.1e - 0.3 ^0.1 <r0.1 <0.1e <0.1 <0.1 0.5 2.6 2.1 1.1 < 0.1e ^ 0.1 1.1 1.2 ^0.1 ^0.1 * 0.1e ^0.1 <i0.1 ^0.1e ^0.1 0.2 a. DATA REPRESENTS POTENTIAL EXPOSURES ONLY DUE TO THE REQUIREMENTS OF RESPIRATOR USAGE IN ALL AREAS OF THE PLANT THAT EXCEEDS 1 PPM CHLORINE. b. INSTANTANEOUS DATA REPRESENTS THE HIGHEST 30 SECOND AVERAGE CHLORINE CONCENTRATION THAT WAS DETECTED. c. EXPOSURE GUIDELINE IS THE OSHA FERMISSABLE EXPOSURE LIMIT . d. SAMPLE WAS TAKEN FROM THE TOP OPENINGS OF THIS EQUIPMENT. e. BELOW THE LIMITS OF DETECTION. DO A 110773 CONFIDENTIAL CONTROL ROOM CONTROL ROOM CPE AREA CHLORINE SURVEY, 1987 (NEW ENVIROMENTAL SECTION) PPM (V O L , VO L) lieu fccf'iB1* CONTROL ROOM PPM (V O L , VO L) rniJTIffli ft MOM TABLE 4. EMPLOYEE'S POTENTIAL INSTANTANEOUS AND TIME-WEIGHTED AVERAGE EXPOSURES TO CHLORINE AT THE CPE PLANT, LOUISIANA DIVISION, 1988. SAMPLING DURATION (MINUTES) SAMPLE NUMBER JOB EXPOSURE GUIDELINE11 365 357 353 350 351 355 09174-1 09174-4 09174-6 09174-5 09174-2 09174-3 OUTSIDE O.S. OUTSIDE O.S. OUTSIDE O.S. OUTSIDE S.O.S. OUTSIDE S.O.S. OUTSIDE S.O.S. EMPLOYEE NUMBER INSTANTANEOUS^ TIME- (PPM) WEIGHTED AVERAGE (PPM) .433971 433644 433360 433371 433227 433344 1.0 CEILING LIMIT 0.4 c0.1d 11.1 4.3 ^.0.1d *:o.id <0.1d ^0.1d -r0.1d d ^ 0.1 0.1d ^0.1d a. DATA REPRESENTS POTENTIAL EXPOSURES ONLY DUE TO THE REQUIREMENTS OF RESPIRATOR USAGE IN ALL AREAS OF THE PLANT THAT EXCEEDS 1 PPM CHLORINE. b. INSTANTANEOUS DATA REPRESENTS THE HIGHEST 30 SECOND AVERAGE CHLORINE CONCENTRATION THAT WAS DETECTED. c. EXPOSURE GUIDELINE IS THE OSHA PERMISSABLE EXPOSURE LIMIT. d. BELOW THE LIMITS OF DETECTION. D0 A 110779 CONFIDENTIAL TABLE 5. EMPLOYEE'S POTENTIAL TIME-WEIGHTED AVERAGE EXPOSURES3TO RESPIRABLE TALC AT THE CPE PLANT, LOUISIANA DIVISION, 1987. SAMPLE SAMPLE JOB EMPLOYEE DURATION NUMBER NUMBER (MINUTES)___________________________________________________ EXPOSURE GUIDELINE15 26 08738 O.T.-LOADING TALC 9 08739 O.T.-LOADING TALC 434291 433971 TIME-WEIGHTED AVERAGE (MG/M3) 2 MG/M3 RESPIRABLE Dl 0.1 0.1 a. DUE TO THE DUST RESPIRATOR USAGE REQUIREMENTS OF THIS JOB, THE DATA REPRESENTS POTENTIAL EXPOSURE ONLY. b. EXPOSURE GUIDELINE IS THE ACGIH'S TLV-TWA FOR RESPIRABLE TALC CONTAINING NO ASBESTOS FIBERS. DO A 110780 oonftdentiai TABLE 6. EMPLOYEE'S TIME-WEIGHTED AVERAGE EXPOSURES TO TETRAHYDROFURAN AT THE CPE PLANT, LOUISIANA DIVISION, 1987. SAMPLING DURATION (MINUTES) SAMPLE NUMBER EXPOSURE GUIDELINE3 JOB 5 350 350 416 06673 07814 07815 07861 ASST. CHEMIST ' (CHLORIDES TEST) ASST. CHEMIST ASST CHEMIST ASST. CHEMIST EMPLOYEE NUMBER 433998 434040 433998 434040 TIME-WEIGHTED AVERAGE (PPM) 200 PPM TLV-TWAb 250 PPM TLV-STEL 27.0 <0.2C <0.2C 25.0 a. AMERICAN CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENIST. b. SHORT TERM EXPOSURE LIMIT - 15 MINUTES. c. BELOW THE LIMITS OF DETECTION. A U0781 confidential TABLE 7. EMPLOYEE'S TIME-WEIGHTED AVERAGE EXPOSURES TO XYLENE AT THE CPE PLANT, LOUISIANA DIVISION, 1987. SAMPLING SAMPLE JOB EMPLOYEE DURATION NUMBER NUMBER (MINUTES)___________________ ___________________________________ EXPOSURE GUIDELINE 10 07821 ASST. CHEMIST 433998 (GEL COUNT TEST) 60 07820 ASST CHEMIST 433998 (GEL COUNT TEST) 46 07822 ASST CHEMIST 433998 (GEL COUNT TEST) TIME-WEIGHTED AVERAGE (PPM) 100 PPM TLV-TWA 150 PPM TLV-STELb <-l.lc <l.lc <1.4C a. AMERICAN CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENIST. b. SHORT TERM EXPOSURE LIMIT- 15 MINUTES. c. BELOW THE LIMITS OF DETECTION. D0 A U078? CONFIDENTIAL