[Federal Register Volume 60, Number 38 (Monday, February 27, 1995)]
[Notices]
[Page 10586]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-4755]



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ENVIRONMENTAL PROTECTION AGENCY
[FRL-5162-2]


Science Advisory Board Environmental Engineering Committee and 
Subcommittee; Open Meetings

March 8-10, 1995.
    Pursuant to the Federal Advisory Committee Act, Public Law 92-463, 
notice is hereby given that the OSWER Exposure Model Subcommittee of 
the Science Advisory Board's (SAB's) Environmental Engineering 
Committee (EEC), will meet Wednesday March 8 and that the full 
Committee (EEC) will meet Thursday and Friday March 9-10, 1995. The 
meetings will begin each day at 8:30 a.m. The meetings will be held at 
the One Washington Circle Hotel, Washington Circle, NW., Washington, DC 
(Hotel telephone is 202/872-1680 or 800/424-9671). The meetings are 
open to the public and seating will be on a first come basis.

OSWER Exposure Model Subcommittee Meeting

    On March 8 the Subcommittee will review the EPA's Composite Model 
for Leachate Migration with Transformation Products (EPACMTP) and the 
Finite Source Methodology. Copies of the documents to be reviewed are 
not available from the SAB; they can be obtained from Dr. Zubair 
Saleem, Office of Solid Waste (5304), U.S. Environmental Protection 
Agency, 401 M Street SW., Washington, DC 20460 (202/260-4767). The 
tentative charge to this subcommittee is as follows:
    (a) EPACMTP is the latest and most advanced of the OSW subsurface 
fate and transport models designed to be computationally efficient for 
usage in monte carlo analysis for national rulemaking. The question of 
interest to EPA is the mathematical formulation in EPACMTP of the 
subsurface fate and transport of daughter products from degrading 
organic chemical constituents, and the appropriateness for EPA's use of 
this approach in establishing nation-wide exit levels for hazardous 
waste in future regulations.
    (b) The Office of Solid Waste (OSW) has been using a national monte 
carlo procedure in which national distributions of parameters are used 
as input to the model. OSW has developed a regional site-based approach 
in which hydrogeologic parameters are selected from hydrogeologic 
regions and in general have cross-correlations. They are used as input 
to the model. Is this site-based approach better or should OSW continue 
to use the approach based on national distributions of input 
parameters?
    (c) The OSW's most recently-used approach is based on an infinite 
source steady-state model. EPA has developed a finite-source approach 
for use with EPACMTP. OSW would like SAB comments on the adequacy of 
the approach for regulatory purposes.
    (d) MINTEQ (metal speciation model) was developed by EPA. EPA has 
recently developed the linkage of the output of the model with EPACMTP 
to assess the subsurface fate and transport of metals. EPA would like 
SAB comments on the appropriateness of the use of this linkage for 
metals in EPA's national rulemaking efforts.

Environmental Engineering Committee Meeting

    On March 9-10, the EEC will discuss its final draft report on the 
review of the Use Cluster Scoring System (UCSS) of the Office of 
Pollution Prevention and Toxics; receive briefings from the Agency on 
various programs; and plan the remainder of its FY95 activities. Copies 
of the EEC's draft UCSS report are available from Mrs. Dorothy Clark, 
address below.
    Any member of the public wishing further information, such as a 
proposed agenda on either meeting should contact Mrs. Dorothy Clark, 
Secretary, Science Advisory Board (1400F), U.S. EPA, Washington, DC 
20460, at 202/260-6552 or 202/260-7118 (fax). Written comments of any 
length may be provided up until the meetings, but 35 copies must be 
supplied. Members of the public who wish to make a brief oral 
presentation should contact Mrs. Kathleen Conway by phone 202/260-2558, 
or internet CONWAY. <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="a2e9e3f6eaeee7e7ece2c7d2c3cfc3cbce8cc7d2c38cc5cdd4">[email protected]</a> no later than noon 
(eastern time) Wednesday March 1 in order to have time reserved on the 
agenda.

    Dated: February 10, 1995.
A. Robert Flaak,
Acting Staff Director, Science Advisory Board.
[FR Doc. 95-4755 Filed 2-24-95; 8:45 am]
BILLING CODE 6560-50-P

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