Document km2q5O2EeQbn6NOQ7JO78QmwJ

[i C <Qi* i-v Ilu-vk^ INTERNAL CORRESPONDENCE pile copy UC >49- Z NOV 27 1974 - H-'N-WfTO------------------ ^ CHEMICALS AND PLASTICS DO r C' V<= lOX 471, TEXAS CITY, TEXAS 77590 to (name) COMPANY LOCATION Dr, A* B* Steele NEW YORK OFFICE June 25, 1974 COPY TO Mr. C. E. Colwell - Tarrytown Mr. M. E. Eisenhour Mr. R. L. Frantz Mr. G. G. Himmler - 312 Dr. R. E. Leech - 511 Mr. R. W. Sesler Mr, G. C. Shipston - 501 SUBJECT Customer Sampling for VCM The attached information, which was collected and sunmarized by J. W. Fields, covers the test program for determiuing the concentration of vinyl chloride at various PVC fabricating plants that use UCC suspension/non-solvent resin. The data covers producers of the following finished products: Flooring (1) Uvalde Rock Asphalt, Houston, Texas; Wire and Cable (1) General Cable, Bonham, Texas; Foam Profile (1) Middlebury Molding, MiddleburyiVObio; Medical Supplies (1) Faultless Rubber, Ashland, Ohio; Pipe (2) Gi fffcrd'-Hi 11, Lubbock, Texas and Jet Stream, Siloam Springs, Arkasnas. . .-.jyfei.-,'JpSfftT ** The air samples were collected and analyzed by an employee ot'Tjncner, Collie and Braden Environmental Laboratories. They reported their results (letters attached) to the respective companies. ' The data on the resin, compound, and product samples were obtained by the Texas City Special Problems Laboratory under the guidance of Bob ^fnold. Part of these samples were collected at the time the air samples ; }fl|re taken and should give some indication of the relationship of nwnomer/^^ tlj the air to monomer in the resin. In addition to these samples we had ideviously requested and received a similar set from each of the customer? for VCM analyses. With the exception of the Jet Stream samples, the monomer concentration generally decreased as the resin went through the fabricating Operation. / " '. As you will find noted on the Faultless Rubber sumnary sheet, the data PD the air and resin samples were inconsistent. This apparently occurred ' .j ^ because the extruder operator was not aware that he was running a competitive resin at the time the air samples were taken and, rather than supplj?iM us with this material,he gave us QYNL instead. ' '* . 41 \ r^r=:--, -^11'rsrr^- UCC 024083 \ K - - ; Dr. A. B. Steele -2- June 25, 1974 Based on this limited survey, it appears that our resin customers should be able to meet the limits which the Ad Hoc Conmittee of VCM/PVC Producers authorized SPI to support with a minimum amount of effort. Obviously though, any reduction in the VCM level in the resin would make their task much easier. The customers that were sampled were most appreciative of UCC efforts to assist them in determining the level of VCM in their plants and finished products. We do not plan to issue any reports to the customer on the resin data but, with your approval, could pass selected information to the indivi dual customers on their products through the Sales organization who did an excellent job of coordinating the program at the various accounts. Please let us know if you have any questions concerning the enclosed information. GFT/sn Attachment UCC 024084 June 18, 1974 NOTES FROM PLANT VISITS MADE TO COLLECT AIR SAMPLES FOR VCM CONCENTRATIONS MIDDLEBURY MOLDING, MIDDLEBURY, INDIANA, A DIVISION OF ABITIBI CORPORATION QSQH-7 transloaded from hopper car to hopper truck in Hammond, Indiana. Closed vacuum system from truck to holding bin, closed airveying system for PVC to Well ex. Weilex cooler closed. Open hoppers on extruder. Six extrusion lines Average 'v 19 ft/min. Business very bad according to R. B. Beemer, Vice President & General Manager. Sells almost exclusively to mobile homes and sports trailers. These type of businesses are typically bad credit risks. Only resin quality prob lem is moisture. However, a QSQH-7 "wet" sample, returned to Texas City in a sealed bottle contained 0.2% volatiles. Probably a static problem. Foamed pro file products are not finished in line. The finishing line for both wood and PVC molding is done in a separate room (high solvent level in the air). Wood molding is not made at this location. Now using TM-185 (Tin) rather than UCC formulation (Barium Cadmium). Several bags of Rohm & Haas new processing aid/ impact modifier combination on location. The operators did not think the Maddock mixing screw gave higher extrusion rates than their normal screws. Did not dis cuss this with Charlie Yoder. GIFFORD-HILL CORPORATION, LUBBOCK, TEXAS OSHA found 64 ppm (30 minute sample) on their Henschel Platform. Dust collector was broken when samples were taken, now working. Installing more venti lation on platform. The Lubbock Pipe Plant produced the 100 MMth pound of pipe on June 10, 1974. Yard empty of inventory. Conoco is pushing PVC rigid pipe compound. Conoco hired a compounder from Ethyl. Conoco & Ethyl are indicating that in the future all PVC will be compounded at the PVC plant to lower the re sidual level and recover the VCM. They indicate that compounding may be the only way to reduce the residual VCM in the resin to an acceptable level. Norm Sturn, Plant Manager, not in favor of going into the high density polyethylene business. He feels that the raw material suppliers (UCC) rather than GiffordHill is directing the future of the company. Conoco resin now going to Grand Island Nebraska Plant. Sample of Conoco resin from hopper car evaluated at 64% total solids (by UCC). RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT UCC 024085 GENERAL CABLE, BONHAM, TEXAS No OSHA visit as yet. Mixing room not air conditioned. The rest of the plant is. General Cable has purchased Trulon 510 and some Japenese resin. They will send sample of each to Texas City. Borderline on resin supply. Has been offered Italian G.P. resin @ 73<t/lb. FAULTLESS RUBBER, ASHLAND, OHIO The mixer is entirely automated in an air conditioned room along with two pelletizing extruders. All PVC compounds are pelletized. Medical tubing is pro duced in airconditioned, "clean room". JET STREAM PLASTICS, SILOAM SPRINGS, ARKANSAS This plant will be shut down the week of June 17 due to raw material shortage. Many employees quitting. On June 13, one machine on 4" virgin resin, one machine on 4" regrind, perforated drainage pipe. Henschel working one 12hour shift a day when they have resin. Ken Stuart wants to go into foamed profile wood replacement extrusion. He has one extruder that could be modified. Has discussed the sale of all^ the equipment at PAVCO, Pascagula, Mississippi, for $250M. PAVCO would guarantee purchasing 40% of the profile. Winrock (Jet Stream's Parent Company) has some lumber business and would have an outlet for the product. UCC will be approached by Winrock for VC1/E copolymer. Ken Stuart is also looking at butylene for extrusion. A competitive resin supplier evaluated some samples for Jet Stream for residual VCM. Resin from Hopper Car 940 PPM Compound from Henschel 240 PPM Compound from Extruder Hopper 640 PPM Jet Stream has heard of the VCM on the "Grey Market" and would be willing to buy at a price they could afford. Jet Stream has done $8.1 MM worth of PVC and P.E. business with UCC over the years. OSHA visited the Siloam Springs plant on 6/12/74. Took three 30-minute samples on the Henschel platform. OSHA uses carbon entrapment tubes (sealed), $6.59/dozen. UCC 024086 UVALDE ROCK AND ASPHALT, HOUSTON, TEXAS Operator enters a hopper car to obtain sample. Open, unheated, ribbon blenders. Open feed from blender to Banbury mixer. Hot pig from Banbury is open and directly underneath an operator on one line. Mills and calanders are open and not well ventilated as are the in-line finishing ovens. DISTRIBUTION Mr. M. E. Eisenhour Mr. R. L. Frantz Mr. R. W. Sesler Dr. A. T. Steele Mr. G. F. Tacquard John W. Fields UCC 024087 FAULTLESS RUBBER COMPANY ASHLAND, OHIO June 6, 1974 Employee Sampled Sample Time, min. TWA VCM-PPM Henschel Operator Pelletizer Operator Extruder Operator Setup Operator 120 30 120 13 120 2.8 120 2.4 NOTE: Uniroyal VR-22 PVC resin was being processed at the time the samples were taken. The operator indicated that QYNL was being processed and the samples we received from the operator were all nil in residual monomer. The high VCM concentration in the air samples and the low residual concentration of the re turned resin were inconsistent. Therefore, Mr. Ed Hiller of Faultless Rubber was contacted and the compounding log sheet indicated Marvenol VR-22 rather than QYNL was being processed through the henschel at the time the air samples were taken. Mr. Hiller is sending sealed samples of Uniroyal, Marvenol VR-22 PVC resin plus some compound, and pellets for our evaluation. The Henschel Mixing operation at Faultless Rubber is in a corner of a small room without natural ventilation but the room is airconditioned. Two pelletizers (3.5 inch extruders) and three extruders which produce medical tubing are located in the same room. This entire area is classified as a "clean room", and is closed off from the rest of the processing plant. RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT / UCC 024088 TURNER, COLLIE & BRADEN, INC ENVIRONMENTAL LABORATORIES June 19, 1974 Faultless Rubber Company 4th Street Aschland, Ohio 44805 Attention: Mr* E.L. Hillier Dear Mr. Hillier: In accordance with a request by Union Carbide Corporation, Turner, Collie & Braden Environmental Laboratories are pleased to submit data on the Industrial Hygiene Survey for Vinyl Chloride Monomer conducted in your plant on June 6, 1974. We would like to thank you for the fine co-operation and assistance received by our technical representative during his visit to your plant. Turner, Collie & Braden Environmental Laboratories welcomes the oppor tunity in being of service to your company in the near future in this and other areas that are briefly described in brochures, which are en closed . If you have any questions concerning the results and/or our services, please do not hesitate to call us. Very truly yours, TURNER, COLLIE & BRADEN, INC. Oscar Saenz, Jr. Head, Environmental Laboratories cc: Mr. M.E. Eisenhour, Union Carbide Corporation Mr. George Tacguard, Union Carbide Corporation v Enclosure ii i": P l: i 'I ucc 024089 INDUSTRIAL HYGIENE SURVEY FOR VINYL CHLORIDE Company: Faultless Rubber Company 4th Street Aachland, Ohio 44805 Date of Sampling; June 6, 1974 Operation Pelletizer Operator Blender Operator Set Up Man on Line Extruder Operator Time at Start (hours! 0936 0940 0946 0950 Duration of Exposure (minutes) * 120 120 120 120 Vinyl Chloride Concentration Found (ppm) 13.0 30.0 2*8 2.4 ' &X 7^ ,' ' IS? ^ 'T ucc 024090 GENERAL CABLE BONHAM, TEXAS June 12, 1974 Sample TWA Employee Sampled___________________________________ Time, min.______ VCM-PPM Mixer Operator Pelletizer Swiss Extruder Operator 7-12 Swiss Extruder Operator 23-29 4.5" Jacketing Line Operator 120 0.59 120 0.26 120 0.58 120 0.26 120 1.50 Samples obtained during the plant visit: Resin, QSAN-7 Compound Pellets Samples received prior to Plant visit: Resin, QSQN-7 Compound 28 ppm 1.0 ppm Trace * 246 ppm 1.5 ppm The residual VCM level of the PVC resin being used during the air sampling was extremely low (28 ppm) which is abnormal for suspension-produced PVC that is shipped in hopper cars. The Henschel Mixer and the pelletizer are located in a non-airconditioned room which is separated from the extrusion and cable assembly lines. In warm weather a double door is opened to the outside to provide additional ventilation for the mixer operator. The extrusion plant which includes a wire drawing line, wire coating lines and communication cable assembly lines is airconditioned and is well ventilated. RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT UCC 024091 TURNER, COLLIE & BRADEN, INC. CONSULTING ENGINEERS June 19, 1974 General Cable 800 East 2nd Street Bonham, Texas 75418 Attention: Mr. Dave Richardson Dear Mr. Richardson: In accordance with a request by Union Carbide Corporation, Turner, Collie & Braden Environmental Laboratories are pleased to submit data on the Industrial Hygiene Survey for Vinyl Chloride Monomer conducted in your plant on June 12, 1974. We would like to thank you for the fine co-operation and assistance received by our technical representative during his visit to your plant. Turner, Collie & Braden Environmental Laboratories welcomes the oppor tunity in being of service to your company in the near future in this and other areas that are briefly described in brochures, which are en closed. If you have any questions concerning the results and/or our services, please do not hesitate to call us. Very truly yours TURNER, COLLIE & BRADEN, INC. Oscar Saena, Jr. Head, Environmental Laboratories cc: Mr. M.E. Eisenhour, Union Carbide Corporation Mr. George Tacguard, Union Carbide Corporation Enclosure ucc 024092 INDUSTRIAL HYGIENE SURVEY FOR VINYL CHLORIDE Company: General Cable 800 East 2nd Street Bonham, Texas 75418 Date of Sampling: June 12, 1974 Operation Mixer Operator Pelletizer Operator Swiss Extruder, Operator Right Line, Machines 7-12 Swiss Extruder, Operator-Machines 23-28 4 1/2 Final Jacketting Line Time at Start (hours) 1133 1135 1141 1145 1154 Duration of Exposure (minutes) * 120 120 120 120 126 Vinyl Chloride Concentration Found (ppm) <1.0 <1.0 <1.0 <1.0 1.5 UCC 024093 GIFFORD-HILL LUBBOCK, TEXAS June 11, 1974 Sample TWA Employee Sampled________________________________________ Time* min.______ VCM-PPM Blender #1 Blender #2 Extruder Operator Extrusion Foreman (roving) Maintenance (Roving) 119 22.9 (17.1)* 119 21.8 (16.6)* 117 0.28 120 0.29 120 24.5 *UCC Data on duplicate carbon tubes Resin from hopper car, top Resin from hopper car, bottom Samples taken during plant visit: Resin, QSAN-7 (Mixer) Compound Pipe * Samples received from Gifford-Hill prior to visit: Resin into Henschel Mixer Resin from top of Silo Compound out of Henschel Compound at Machine A Compound at Machine B Pipe Pipe 400 ppm 272 ppm 308 ppm 34 ppm 1 ppm 199 ppm 160 ppm 13 ppm <1.5 ppm <1.5 ppm 6 <1.5 ppm "- /- ' `-tj* . -' -> [ s i y?' ' - , , '** ,, - k' ' v .>*/* , _' ... OSHA visited the Lubbock Plant the week of May 27 and found 64 ppm VCM on the Henschel Mixer platform. At the time of sampling the dust collector, a vacuum connected directly to the Henschel mixer by a cloth sack, was broken. ' -TV During our visit of 6/11/74, the dust collector was working. The Henschel - mixing platform at the Lubbock Plant is enclosed and is in a position where there j"; is almost no natural ventilation. A sample of Conoco resin was obtained during the visit from the bottom of a newly arrived hopper car. The sample was visually wet and a check by our lab showed a total solids of 63.99%. Residual monomer on this samples was 15 ppm. "r; RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT ' 4;T - /! -- ' 4 ucc 024094 TURNEft, COLLIE & BRADEN, INC CONSULTING ENGINEERS June 19, 1974 Gifford-Hi11 2425 Marshall P.0. Box 2748 Lubbock, Texas 79408 Attention: Mr. Joe Lord, Manager Manufacturing Dear Mr. Lord: In accordance with a request by Union Carbide Corporation, Turner, Collie & Braden Environmental Laboratories are pleased to submit data on the Industrial Hygiene Survey for Vinyl Chloride Monomer conducted in your plant on June 11, 1974- We would like to thank you for the fine co-operation and assistance received by our technical representative during his visit to your plant. Turner, Collie & Braden Environmental Laboratories welcomes the oppor tunity in being of service to your company in the near future in this and other areas that are briefly described in brochures, which are en closed. If you have any questions concerning the results and/or our services, please do not hesitate to call us. Very truly yours, TURNER, COLLIE & BRADEN, INC. Oscar Saenz, Jr. Head, Environmental Laboratories cc: Mr. M.E. Eisenhour, Union Carbide Corporation Mr. George Tacguard, Union Carbide Corporation )/ Enclosure !' i i I ;i '.vi ................ 111 i HUM' I '. / '> . n. i ucc 024095 INDUSTRIAL HYGIENE SURVEY FOR VINYL CHLORIDE Company: Gifford-Hill 2425 Marshall P. 0. Box 2748 Lubbock, Texas 79408 Date of Sampling; June II, 1974 Operation Foreman Blending No.l Operator Maintenance Blender No2 Time at Start (hours) 1113 1118 1124 1121 1325 Duration of Exposure (minutes) * 120 120 117 120 119 Vinyl Chloride Concentration Found (ppm) <1.0 22.9 <1.0 24.5 21.8 ucc 024096 JET STREAM PLASTICS SILOAM SPRINGS, ARKANSAS June 13, 1974 Sample Employee Sampled__________________________________ Time, min. Henschel Mixer Operator Quality Control (Roving) m Extruder Operator #12 Machine)'' Extruder Operator #17 Machine^2) (1) Processing virgin QSAN-7 pipe compound (2) Processing regrind (multiple screw) (3) LICC data on duplicate carbon tubes 120 117 120 121 TWA VMC, PPM 4.7 (4.1)3 1.14 0.81 0.76 Samples taken during plant visit: Resin, QSAN-7 Compound Pipe 153 ppm 5 ppm * 66 ppm Samples received from Jet Stream prior to visit: QSAN-7 Resin ) Compound ) Set I Pipe ) QSAN-7 Resin ) Compound ) Set II Pipe ) 190 ppm 88 ppm 95 ppm 59 ppm 24 ppm 50 ppm Jet Stream was operating only two machines during the plant visit due to the PVC resin shortage. The mixing platform is open and in the same building with the extruders and powder holding tanks (resin and compound). The management has installed several large fans in the area of the mixing-storage operation. OSHA had visited the Si loam Springs plant on 6/12/74 and taken three 30-minute samples on the mixing platform. The OSHA inspector indicated that only the mixing sections were problem areas. The location of the Henschel mixer is advantageous since there is a natural flow of air on all sides of the mixer. RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT UCC 024097 TURNER COLLIE & BRADEN, /NC. CONSULTING ENGINEERS June 19, 1974 Jet Stream Plastics P.Q. Box 190 Siloam Springs, Arkansas 72761 Attention: Hr. Paul G. Nitz, Manager Manufacturing Dear Mr. Nitz: In accordance with a request by Union Carbide Corporation, Turner, Collie 6t Braden Environmental Laboratories are pleased to submit data on the Industrial Hygiene Survey for Vinyl Chloride Monomer conducted in your plant on June 13, 1974. We would like to thank you for the fine co-operation and assistance received by our technical representative during hia visit to your plant. Turner, Collie & Braden Environmental Laboratories welcomes the oppor tunity in being of service to your company in the near future in this and other areas that are briefly described in brochures, which are en closed. If you have any questions concerning the results and/or our services, please do not hesitate to call us. Very truly yours, TURNER, COLLIE & BRADEN, INC. Oscar Saenz, Jr. Head, Environmental Laboratories cc: Mr. M.E. Eisenhour, Union Carbide Corporation Mr. George Tacguard, Union Carbide Corporation Enclosure I' i i I\ j ;i); ;* i rin hm' ' I / '\u j UCC 024098 *. 'll* 7 INDUSTRIAL HYGIENE SURVEY FOR VINYL CHLORIDE Company: Jet Stream Plastics P.0. Box 190 Siloam Springs, Ark, 72761 Date of Sampling: June 13, 1974 Operation Extruder Operator No.12 Machine with Virgin Material Extruder Operator No.17 Machine with Regrinder Quality Control Man Mixer Operator Time at Start (hours) 0907 0909 0915 0925 Duration of Exposure (minutes) 120 121 117 120 Vinyl Chloride Concentration Found twm) <1.0 <1.0 1.1 4.7 ucc 024099 \J MIDDLEBURY MOLDING MIDDLEBURY , INDIANA June 5, 1974 Employee Sampled Intensive Mixer Operator Additive Weigher Extruder Operator, Line 1 & 2 Extruder Operator, Line 3 & 4 Extruder Operator, Line 5 & 6 Sample Time, min. 120 120 120 120 120 TWA VMC-PPM 24 8.8 1.8 0.6 0.7 Samples obtained during the plant visit Resin QSQH-7 Compound Profile from Line 1 2 3 4 5 6 412 ppm 183 ppm 97 ppm 63 ppm 69 ppm 89 ppm 30 ppm 104 ppm Samples received from Middlebury Molding prior to plant visit Resin, QSQH-7 93 ppm Compound 53 ppm Extruded from profile 112 ppm The intensive mixing platform is in a room with one opening to the extrusion room. No natural ventilation was available. Observation during the plant visit indicated that most of the PVC compound was dumped into Gaylords and transported to the extrusion lines. The Gaylords containing the compounds were open as well as the extruder hoppers. The profiles are finished in another area along with wood trim. The solvent line was high in most parts of the plant, however, the plant was clean and well maintained. The extrusion room is large and well ventilated. On June 18, one of the extruder operators vomited blood and consulted his local M.D, Upon learning that his patient worked in a plant using PVC, he im mediately called the Indiana Board of Health and requested that Middlebury Molding be closed. RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT UCC 024100 TURNER, 'COLLIE & BRADEN, INC. CONSULTING ENGINEERS June 19, 1974 Middlebury Moulding Inc. Box 509 Middlebury, Indiana 46540 AttenCion: Mr. R.B. Beemer, Vice-President and General Manager Dear Mr. Beemer: In accordance with a request by Union Carbide Corporation, Turner, Collie & Braden Environmental Laboratories are pleased to submit data on the Industrial Hygiene Survey for Vinyl* Chloride Monomer conducted in your plant on June 5, 1974. We would like to thank you for the fine co-operation and assistance received by our technical representative during his visit to your plant. Turner, Collie & Braden Environmental Laboratories welcomes the oppor tunity in being of service to your company in the near future in this and other areas that are briefly described in brochures, which are en closed. If you have any questions concerning the results and/or our services, please do not hesitate to call us. Very truly yours TURNER, COLLIE & BRADEN, INC. Oscar Saenz, Jr. Head, Environmental Laboratories cc: Mr. M.E. Eisenhour, Union Carbide Corporation Mr. George Tacguard, Union Carbide Corporation l/ Enclosure nr> I'in i'./ i. '.I. i * ucc 024101 INDUSTRIAL HYGIENE SURVEY FOR VINYL CHLORIDE Company; Middlebury Moulding IncBox 509 Middlebury, Indiana 46540 Date of Sampling: June 5, 1974 Operation Time at Start (hours) Lines 3 and 4 Lines 5 and 6 Lines 1 and 2 Compounding Room Additives Compound Area Mixing Welex Operator 0845 0847 0852 0857 0900 Duration of Exposure (minutes) * 119 120 120 120 119 Vinyl Chloride Concentration Found (ppm) <1.0 <1.0 <1.0 8.8 24.0 UCC 024102 CONFIDENTIAL UVALDE ROCK ASPHALT COMPANY HOUSTON, TEXAS May 30, 1974 Employees Sampled Sample Time, min. TWA VCM-PPM Tile Blender, B line Banbury Operator, B line Mill Operator, B line Banbury Operator, D line Tile Blender, D line Mill Operator, D line Gauging Silo . Sampling Resin Car 105 101 108 108 103 102 0.75 5 nil nil nil nil nil nil nil 660 (862)(1) (1) UCC data using different type of carbon tubes (2) This employee entered the railcar containing Diamond PVC. Residual monomer of PVC in three compartments of this railcar jneasured at Texas City. #1 #2 #3 Borden resin from Silo 114 ppm 147 ppm 108 ppm 180 ppm No UCC resin on site at the time of plant visit. Uvalde uses a low concentration of PVC in their vinyl asbestos flooring line 'v/15-18%, therefore the low VCM exposure readings are not unexpected. The plant is poorly ventilated, and the powder compound and hot processing lines are open with operators standing directly above the hot processing tile. Uvalde will discontinue the practice of entering the rail car for PVC samples. RESINS LABORATORIES UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS DIVISION TEXAS CITY PLANT UCC 024103 TURNER, COLLIE & BRADEN, INC CONSULTING ENGINEERS June 19, 1974 Uvalde Rock & Asphalt Company 1705 N. Oliver Street Houston, Texas 77001 Attention: Mr. Richard S. Zaruba, Director R&D and Production Manager Dear Mr. Zaruba: In accordance with a request by Union Carbide Corporation, Turner, Collie & Braden Environmental Laboratories are pleased to submit data on the Industrial Hygiene Survey for Vinyl Chloride Monomer conducted in your plant on May 30, 1974. We would like to thank you for the fine co-operation and assistance received by our technical representative during his visit to your plant. If you have any questions concerning the results and/or our services, please do not hesitate to call us. Very truly yours. TURNER, COLLIE & BRADEN, INC. Oscar Saenz, Jr. Head, Environmental Laboratories cc: Mr. M.E> Eisenhour, Union Carbide Corporation Mr. George Tacguard, Union Carbide Corporation -s i' i ' |'.D\ I I UCC 024104 irv.i-. "(M'l I'lmiK' I / ll '.III '111 ' INDUSTRIAL HYGIENE SURVEY FOR VINYL CHLORIDE Company: Uvalde Rock & Asphalt Co. 1705 N. Oliver Street Houston, Texas 77001 Date of Sampling : May 30, 1974 Operation Time at Start (hours) Unloading Operation 0915 Vinyl Resin Car (man went into compartment) Tile Base Blender M-T Line 1000 Banbury Mixing 1003 No.l Mill B Line 1141 D-Line Banbury Operation 1200 Tile Base Blender D-Line 1206 No.3 Une, No.2 Mill Operator 1403 Duration of Exposure (minutes) 9.25 105 101 108 108 103 102 Vinyl Chloride Concentration Found (*>*") 650 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 ucc 024105