Document g2KnpMrva6aqNXkLB0oBkmwKa

200) L Street, N.W., Suite SdliAWashington. D.C. 20036 Task Force November 22, 1996 Document Control Office (7407) Office of Pollution Prevention and Toxics Environmental Protection Agency Room G-099 401 M Street, S.W. Washington, D.C. 20460 Re: OPPTS-42187B; FRL-4869-1 Dear Sirs: On June 26, 1996, EPA proposed a test rule for 21 hazardous air pollutants (HAPs), including 1,1,2trichloroethane and ethylene dichloride (EDC), and solicited proposals for enforceable consent agreements (ECAs) regarding the performance of pharmacokinetics studies for particular HAPs to permit extrapolation from oral data to inhalation exposure. 61 Fed. Reg. 33177. On October 18, EPA extended the deadlines for submission of proposals for EGAs for pharmacokinetics studies to November 25, 1996. 61 Fed. Reg. 54383. The HAP Task Force represents manufacturers of 1,1,2-trichloroethane and EDC. The Task Force has retained ChemRisk to develop ECA proposals for these substances. Three copies of each proposal are enclosed. The HAP Task Force appreciates EPA's willingness to extend the deadline for these proposals and for comments on the proposed test rule. As a result of this extension, we were able to have a productive meeting with EPA scientific staff on November 5, which also facilitated the development of proposals which we believe will provide EPA the information it requires more quickly and efficiently than would a test rule, while avoiding unnecessary animal testing. Please do not hesitate to let me know if there is any question about these proposals. Sincerely, Enclosures cc: Mr. Gary E. Timm Michael L. Gargas, Ph.D. W. Caffey Norman, Esq. Peter E. Voytek, Ph.D. Manager DO 12914h CONF TDFNT T Al