Document NVKYLrovxdpbNjGnVMDry45Q

-a: tAmsDican l?siro~sMfllJll Dl'lls!!lllme 1220 l Street, Northwest Washington, D.C. 20005 BP CHE~IIICALS NS!EO rr=-~=..;.; ==~ : 3T.~l-Z~~ fJR:c:~-~, rI April 19, 1996 ~~~ QMary Paxtonff. "iio: Benzene Task Force (BTF) Benzen~ Basic Research Work Group ACGIH TLV/STEL Documentation; Next Meeting; Site Visit with Irons and Cox; EPA's Cancer Risk Assessment Guideiines Enclosed is the newly revised version of ACGIH's documentation for their proposed benzene TLV of 0.5 ppm with a 15-minute STEL at 2.5 ppm. We will be responding on a fairly relaxed schedule (probably in June), but the sooner you send me your initial comments, the more efficiently I can put a draft together that we can work into perfection. Our next BTF meeting is scheduled for Wednesday, May 15, in Houston following the meeting of Health and Product Stewardship (H-&PS) on Tuesday. Please return the attached form indicating whether you plan to attend. More details will follow. Also, the BBRWG has scheduled a site visit in Denver. at Rich Irons' laboratory on Tuesday, June 4. He will give us an update on his mechanistic work, and we will discuss on the validation of the prototypical BBRA model and its adaptation to benzene with him and Tony Cox. If you would like to come along, please indicate that on the attached form. For )LOur information, EPA has released its proposed guidelines for cancer risk assessment. It is likely that API will bB submitting comments. Thedoc~ent is being distributed to H&PS; if you're not on that mailing list and would like a copy, let me know. BP-00018090 Return to Roxie Landry at 202-682-8270: (full name) (company) will will not attend in the BTW mee~ing 1n ~ous~on on Wednesday, ~my 15, 1996. will will not attend in the BBRWG site visit in Denver on Tuesdmy, JUne ~. 1.996. BP-00018091