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m T INDUSTRIES To: Wilfrido Torres INTER-OFFICE CORRESPONDENCE Date: April 13, 1977 From: P. Cappas Location: Laboratory Subject: Vinyl Chloride Study - Monthly Report Areas and personnel monitoring program for VCM determination in the atmosphere, at the VCM plant and in other areas at PPG Caribe Plant, during March 1977. TABLE I PERSONNEL MONITORING - TWA SAMPLES Name H. Melendez C. Gonz&lez E. Santiago C. Torres H. MelSndez J. Zayas Josul Lopez A. Alvarez J. Gracia C. Tossas S. Cuevas G. Maldonado J. Albelo J. Silva A. Rodriguez J. Pacheco Job No. 1 5 2 3 2 S Maint. 5 Maint. 3A 4 Super. Maint. Maint. Maint. 5 Date Starting Time 3-1-77 3-2-77 3-4-77 3-7-77 3-7-77 3-11-77 3-15-77 3-16-77 3-16-77 3-16-77 3-18-77 3-21-77 3-24-77 3-24-77 3-28-77 3-28-77 08:40 08:45 16:00 08:40 08:30 09:15 09:25 08:35 08:15 08:25 16:30 08:00 08:25 08:25 08:30 08:50 Sample Duration (min) Results CPPm) 20 0.1 375 1.3 360 0.1 380 40.1 390 - 0.1 360 1.6 335 1.5 405 40.1 405 0.1 385 0.1 330 0.1 420 Z0.1 425 0.3 425 0.2 420 0.2 340 0.4 Comments: A total of 16 TWA samples were taken. Based on this total the average concentration was 0.4 ppm VCM. Three of this total were overexposure (1.0 ppm VCM - maximum ppm VCM exposure for TWA samples). The highest concentration obtained was 1.6 ppm VO! (3-11-I"7). The man monitored was J. Zayas. He was working in Job #5 (VCM Storage Area) doing his routinary work around the area. SL 072381 Vinyl Chloride Study - Monthly Report Page 2 The Average Concentration of TWA Samples for Each Job Was: Jobs No. of Samples Taken 1 2 3 3A 4 5 Supervisor Maintenance 1 2 1 1 1 4 1 5 Average - ppm VCM 0.1 0.1 40.1 0.1 0.1 0.8 40.1 0.5 TABLE II VCM Personnel Monitoring (15 min sample) Short Sample Program The short sample program include a sampling during a period of (15 min) suspected high vinyl chloride concentrations. Maximum exposure for 15 min. samples - 5.0 ppm VCM. Name Job No. Date Starting time Sample Duration (min) Results ppm VCM C. GonzSlez C. GonzSlez J. Zayas P. Delgado R. Rivera P. Delgado R. Rivera A. Alvarez R. De Jestis E. Sinigaglia A. Irizarry E. Rivera C. GonzSlez H. Melendez H. Melendez H. Melendez J. Pacheco H. Melendez A. DSvila 5 5 5 Loader Loader Loader Loader 5 2 Maint. Maint. 5 5 5 5 5 5 5 Lab. 3-2-77 3-5-77 3-11-77 3-13-77 3-13-77 3-13-77 3-13-77 3-15-77 3-16-77 3-17-77 3-17-77 3-17-77 3-24-77 3-25-77 3-25-77 3-25-77 3-28-77 3-30-77 3-30-77 09:30 08:55 13:45 15:45 15:45 16:00 16:00 09:30 08:25 09:20 09:20 10:00 08:15 OS: 25 09:15 09:35 09:05 08:50 08:00 15 M tv 1* ft f ft 15 15 15 15 15 15 15 15 15 15 15 10 2.9 18.1 0.7 26.9 18.1 12.4 21.1 262.5 4.4 0.1 0.3 1.0 0.3 2.7 40.01 0.4 1.4 15 N.F. SL 072382 Vinyl Chloride Study Monthly'Report Page 3 Table II (continued) Comments: A total of 19 (15 min) samples were taken. Based on this total the average concentration was 19.7 ppm VCN. Six of this total were over exposure. The highest concentration obtained was 262.5 ppm VCM (3-15-77). The man monitored was A. Alvarez. He was working in Job #5 (VCM Storage Area) taking readings around the Refrigeration Unit. At this time, maintenance people were repairing a pump in this unit. The VCM supervisor was notified of the result obtained on sample taken to A. Alvarez immediately after the analysis. Note: Most of the samples (15 min sample) taken during March 1977 were taken to people working in Job #5 (VCM Storage Area). The VCM personnel sampling was more intensive in this job because of the high VCM concentration obtained during the last month. Month by month results show that this area (Area 5 VCM Storage) is the focus of most of the high VCM concentrations. The Average Concentration (15 min . samples) for Each Job Was: Jobs No. of Samples Taken Average (ppm VCM) 2 5 Loaders Laboratory Maintenance 1 11 4 1 2 4.4 26.5 19.6 N.F. 0.2 TABLE III AREAS VCM MONITORING Area Name Date Starting Time Sample Duration (min) Area 1 Between P-403 AB 3-1-77 08:40 hrs. 425 .Area 5 Near Bullet A valves 3-4-77 09:00 hrs. 400 Area 5 Refrigeration Unit 3-14-77 09:15 hr.s 360 Results (ppm VCM) C 0.1 40.1 0.22 SL 072383 Vinyl Chloride Study Monthly Report Page 4 Table III (continued) Consents: The average concentration based in 3 samples taken in the area monitoring program was 0.1 ppm VCM. S.S.P.R. VCM Monitoring The S.S.P.R. was monitored on 3-13-77. Some of the personnel from the loading department were monitored while disconnecting the VCM vapor and liquid line (see Table II for the results obtained on samples taken to the loaders). The ship was also checked several times for VCM vapor in the atmosphere with the OVA (Organic Vapor Analyzer). Complete reports about these subjects were distributed. Off-Site VCM Monitoring Program - Sampling Date 2-24-77 Every month samples for VCM determination are being taken at different points outside of PPG complex. This sampling is conducted by the Omni Research Laboratory personnel. Six different points were selected according to the wind direction. The points selected and the results obtained were as follow: Site Results (ppb-VCM) 1A - North-West (1000 ft. of VCM Plant) 2k - North-West (2000 ft. of VCM Plant) 3A - South-West (1000 ft. of VCM Plant) 5A - West (1000 ft. of VCM Plant) morning sample 5B - West (1000 ft. of VCM Plant) Afternoon sample 6A - West (2000 ft. of VCM Plant) 7A - Front of Rico Chemical Industries Offices *o 71 *o.71 *0.71 *0.71 *0.71 *0.71 *0.71 Attached to this report you will find the following: 1. VCM Plant Job Areas Map 2. VCM Storage Area Map 3. Off^Site Sampling Point Map Pedro Cappas /ngg Attachments cc: D.R. Ferguson K.R. Mesloh K. Ezelle M. Juves J. 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