Document emgwa205jkwY41vwoK0b2524y

PPG INDUSTRIES, INC. INDUSTRIAL CHEMICAL DIVISION LAKE CHARLES, LOUISIANA LD-1121E CONTINUING PROGRAM OF MONITORING ATMOSPHERIC CONTAMINANTS WITHIN THE LAKE CHARLES PLANT ty Mark Wood December 29, 1972 Distribution W. E. Graybill H. T. Hoenes, Ur. H. B. Lovejoy D. L. Duncan M. Davis C. Burns M. Burns T. Taylor R. Eakin R. Kaspar E. McVicker W (Hapman C. P. LeBlanc Central Files - G.O. Lee Grant Zeb Bell Technical Author Files (6) Laboratory File Key Words________________________ Occupational Environment Atmospheric Contaminants Monitaire Sampler MSA Universal Pump Andersen Mini Sampler Electrostatic Precipitation Unico Gas Detector Mercury Vapor Detector OSHA Silver Wool Mercury Monitor Hydrogen Sulfide Detector LIQB 00 0013 'LABORATORY DEPARTMENT MARK WOOD TECHNICAL REPORT DECEMBER 29, 1972 CONTINUING PROGRAM OF MONITORING ATMOSPHERIC CONTAMINANTS WITHIN THE LAKE CHARLES PLANT LD-1121E ABSTRACT The tables composing this report are continuations of occupational environment surveys started, early in 1969 and contain data from all plant areas from May 1972 to December 1972. INTRODUCTION The periodic investigation of employee's occupational environments initiated in 1969 is described in detail In LD-1121. This report is an addendum and contains tabulated data collected from May 1972 through December 1972. DISCUSSION In addition to routine area monitoring for mercury vapor, a new method has been developed and used. Eight-hour personnel monitoring using silver wool as a mercury adsorber has been used on several employees in the Mercury Circuit Area and results are reported in Table 1. A description of the silver wool method is reported in LD-1324. Another additional survey reported in Table 1 is hydrogen sulfide monitoring of individuals working around the sulfide sump and the mercury settling pond. A very sensitive badge detector manufactured by Metronics Associates was employed. Heat stress analyses are not reported since OSHA has adopted these measurements only to determine areas that would fall under the classification of potential heat stress working environments. Stifficient data have been collected in the Diaphragm Cells and Mercury Circuit Areas to warrant a program of heat stress prevention measures as outlined by OSHA for potential high heat exposure work places. Results of occupational environment surveys, tabulated by areas, are appended. Table 7 on the Sodium Chlorate Plant has been deleted. Author: Approved: C. P. LeBlanc Date MW; rw J BB 0000139 | Threshold Limit Values of Airborne Contaminants and Physical Agents (Existing within the Lake Charles Plant) LD-112211EE//U Contaminant Ammonia Chlorine Hydrogen Chloride Hydrogen Sulfide Lead Mercury Methyl Chloroform Perchloroethylene Phosgene Sodium Hydroxide Trichloroethylene Vinyl Chloride Mineral Dusts Nuisance Dust Asbestos Silica Pigments T.L.V. Concentration 50 ppm (intended change 25 ppm) 1 ppm 5 ppm 10 ppm 0.20 mg/M3 (intended change - 0.15 mg/M3) 0.05 mg/M3 550 ppm 100 ppm 0.1 ppm 2 mg/M3 100 ppm 500 ppm (intended change - 200 ppm) 10 mg/M3 5 fibers > 5 u/ml 6 mg/M3 (adopted by PPG Industries, Inc.) From: 1971 Edition, Threshold Limit Values of Airborne Contaminants Adopted by ACGIH (American Conferences of Governmental Industrial Hygienists) Federal Register, Volume 56, Number 105, P 10505-10506.