||Letter from Velsicol Chemical Corporation to USEPA Submitting Enclosed Information on Hexachlorocyclopentadiene and Carbon Tetrachloride with Attachments.
||Velsicol Chemical Corp., Chicago, IL.;Environmental Protection Agency, Washington, DC. Office of Toxic Substances.
||27 Mar 1978
Carbon tetrachloride ;
Occupational exposure ;
Industriual hygiene ;
Air pollution sampling ;
US EPA ;
Velsicol Chemical Corporation
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||An industrial hygiene survey was conducted at the Memphis Tennessee plant during the week of May 9th, 1977 by Neal R. Netzel, Industrial Hygienist, Environmental Health and Hygiene Department, to determine airborne concentrations of hexachlorocyclopentadiene (Hex) and to determine employee exposure to carbon tetrachloride. Preliminary sampling was also performed for heptachlor and endrin residues in food consumption areas and for airborne heptachlor concentrations in the catalyst drumming area. The Environmental Science, Research Department requested that air samples be collected in suspected high exposure areas of the Hex-PCL unit. Results of three of the air samples indicated levels of Hex in excess of the threshold limit value (TLV) recommended by the American Conference of Governmental Industrial Hygienists. Each of those samples were collected downwind of suspected emission points and is not indicative of actual worker exposure. The remaining samples were below the TLV, including samples of a process operator and the unit control room.
||The quality of the documents listed in the Office of Toxic Substances database may not meet usual NTIS standards but are included to further the opportunity for the scientific and technical community to locate materials which may not be available elsewhere. The content is the responsibility of OTS. Prepared in cooperation with American Petroleum Inst., Washington, DC.
||Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at firstname.lastname@example.org. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
||57Y; 57U; 68G; 68A
||PC A03/MF A01