Document 1pbknG4mMV2byy3npbGGM0Oa

FILE NAME DuPont DUP DATE 1968 DOC DUP307 DOCUMENT DESCRIPTION Notice of Intent - Committee on Threshold Limits of the American Conference of Governmental Industrial Hygienists COMMITTEE ON THRESHOLD LIMITS AMERICAN CONFERENCE of the OF GOVERNMENTAL INDUSTRIAL 1968 NOTICE OF INTENT HYGIENISTS itthat connected individuals This Notice of Intent is published so to help shape the but others also may have an opportunity of tentative principally of the Committee prior to its recommendations submitting deliberations 1967 Threshold Limits List This can be done by changes in the the intended changes with supporting data or to the Chairman comments on within the Notice of Intent submitting new data on substances not by all substances listed is not binding on the Committee to place these sub- This Notice does restrict the Committee to below in the 1968 Edition nor data received following stances substances with appropriate supporting list will be considered at the next Committee meet- these publication of this inclusion in the 1966 Edition This Notice indicates only the Committee Documentation 1..g for consideration by substances that are under a threshold limit for those substances bearing is available upon request value the Chairman by March 15 1968 Address All comments should reach Stokinger U.S. Public Health Service 1014 be Broadway sent to the Dr. Herbert E. Ohio 45202 If preferred information may P. de Tre- Cincinnati Occupational Health Data Z Dr. R.T. Pa.15213 Depository of Anonymous 4400 Fifth Ave. Pittsburgh .lle Industrial Hygiene Foundation The following list of Threshold Limits List Proposed Revisions and Additions for the 1968 of Plenary has resulted from the fall meeting Committee REVISIONS UNDER CONSIDERATION bstance a From PPm 1967 List mg or mppof ; Proposed for 1968 List ppm mg or mppcf mppcf Appendix 7. A limit of 5 TThh is is is Ne a - No. stg to i coe TetSeh shown Sr ; UTorys ' to established : ; a C cae , based on impinger samples counted mppof is satisfactory by light technitcos most forms of as- control exposures Crocidolite however has been bestos to produce in addition to the as- also mesothelioma bestotic inflammation Since safe limit can be for this form of esbestos at this time obtained obtained 74 ; definitive definitive definitive definitive data are obtained until more to it is recommended that workers exposed supplied - we Veo at bees weet cocidolite cocidolite cocidolite cocidolite . be equipped equipped supplied air with with 'a Spetcotr ef LS Helmets 10 Benzene Butyl mercapton Cristobalite Tridymite Ethyl mercaptan Heptone Methyl mercaptan Octane Sat, 10 200 10 200 0.5 Downward revision by a factor of 2.5 0.5 500 0.5 . 400 6318 6318 |