32796 Federal Register / Vol. 61, No. 123 / Tuesday, June 25, 1996 / Notices

(reference FRN dated June 11, 1996,

61FR29559)scheduled for Thursday,

June 27 and Friday, June 28, 1996, at the

Holiday Inn Hotel and Suites, 625 First

Street, Alexandria, Virginia. The

meeting will convene at 10:00 a.m.,

EDT, rather than 1:00 p.m., EDT, on

June 27, 1996. On June 28, 1996, the

meeting will begin at 8:30 a.m. EDT, as

previously scheduled, but will end at 12

noon EDT, rather than 1:00 p.m. EDT.

FOR FURTHER INFORMATION: For more

information regarding the amendment of

this meeting, please call Prudence

Goforth, Designated Federal Officer

(DFO), at 202–260–7417.

Dated: June 13, 1996.

Robert English,

Acting Designated Federal Officer.

[FR Doc. 96–16258 Filed 6–24–96; 8:45 am]

BILLING CODE 6560–50–P

[FRL–5526–5]

Science Advisory Board; Notification

of Public Advisory Committee Meeting;

Open Meeting

Pursuant to the Federal Advisory

Committee Act, Public Law 92–463,

notice is hereby given that several

committees of the Science Advisory

Board (SAB) will meet on the dates and

times described below. All times noted

are Eastern Daylight Time. All meetings

are open to the public. Due to limited

space, seating at meetings will be on a

first-come basis. For further information

concerning specific meetings, please

contact the individuals listed below.

Documents that are the subject of SAB

reviews are normally available from the

originating EPA office and are not

available from the SAB Office.

1. Integrated Risk Project Steering

Committee

The Integrated Risk Project (IRP)

Steering Committee, an ad hoc

committee established by the Executive

Committee of the Science Advisory

Board, will meet on July 16–17, 1996, at

the Morrison House, 116 South Alfred

Street, Alexandria, VA 22314, telephone

(703) 838–8000. The meeting will begin

at 8:30 a.m. on July 16, and at 8:00 a.m.

on July 17, and end no later than 5:30

p.m. on both days. Seating will be

limited and available on a first-come,

first-served basis. The purpose of the

meeting is to receive reports from the

Subcommittees of the IRP and to begin

discussion of an integrated model for

decision-making that incorporates

information on risks to ecosystems and

humans, risk reduction options, and

their economic implications.

Background on the Integrated Risk

Project

In a letter dated October 25, 1995, to

Dr. Matanoski, Chair of the SAB

Executive Committee, Deputy

Administrator Fred Hansen charged the

SAB to: (a) develop an updated ranking

of the relative risk of different

environmental problems based upon

explicit scientific criteria; (b) provide an

assessment of techniques and criteria

that could be used to discriminate

among emerging environmental risks

and identify those that merit serious,

near-term Agency attention; (c) assess

the potential for risk reduction and

propose alternative technical risk

reduction strategies for the

environmental problems identified; and

(d) identify the uncertainties and data

quality issues associated with the

relative rankings. The project will be

conducted by several SAB panels,

working at the direction of an ad hoc

Steering Committee established by the

Executive Committee.

Single copies of Reducing Risk, the

report of the previous relative risk

ranking effort of the SAB, can be

obtained by contacting the SAB’s

Committee Evaluation and Support Staff

(1400), 401 M Street, SW, Washington,

DC 20460, telephone (202) 260–8414, or

fax (202) 260–1889. Members of the

public desiring additional information

about the meeting, including an agenda,

should contact Ms. Constance

Valentine, Staff Secretary, Committee

Operations Staff, Science Advisory

Board (1400), US EPA, 401 M Street,

SW, Washington DC 20460, by

telephone at (202) 260–6552, fax at (202)

260–7118, or via the Internet at:

Valentine.Connie@epamail.epa.gov.

Anyone wishing to make a brief oral

presentation at the IRP meeting must

contact Ms. Stephanie Sanzone,

Designated Federal Official for the IRP,

in writing no later than 4:00 pm, July 8,

1996, at the above address, via fax (202)

260–7118 or via the Internet at

Sanzone.Stephanie@epamail.epa.gov.

The request should identify the name of

the individual who will make the

presentation and an outline of the issues

to be addressed. At least 35 copies of

any written comments to the Committee

are to be given to Ms. Sanzone no later

than the time of the presentation for

distribution to the Committee and the

interested public. Ms. Sanzone may be

contacted by phone at (202) 260–6557.

See below for additional information on

providing comments to the SAB.

2. Ecological Processes and Effects

Committee

The Ecological Processes and Effects

Committee (EPEC) of the Science

Advisory Board (SAB) will meet on July

18–19, 1996, at the Environmental

Protection Agency’s Washington

Information Center (WIC), Conference

Room 17, 401 M Street, SW,

Washington, DC 20460. The meeting

will begin at 8:30 a.m. on July 18 and

at 8:00 a.m. on July 19, and end no later

than 5:00 p.m. on each day.

The main purpose of the meeting is

to: a) review the planning and problem

formulation for several watershed-level

ecological risk assessment case studies;

b) discuss a process for identifying and

ranking ecological risks as part of the

SAB’s Integrated Risk Project; and c)

discuss EPEC Subcommittee reports,

possibly including reports from the

Marsh Management Subcommittee and

the Lakes Biocriteria Subcommittee.

Background on the Watershed-Level

Ecological Risk Assessment Case

Studies

The Office of Water and the Office of

Research and Development have asked

the Committee to conduct a two-stage

review of the five case studies being

prepared to illustrate ecological risk

assessment for watersheds experiencing

multiple stressors. In 1993, watershed

teams began the development of risk

assessments for five watersheds: Big

Darby Creek, OH; Clinch River, VA;

Middle Platt River Wetlands, NE; Snake

River, ID; and Waquoit Bay Estuary,

MA. The initial review (termed an SAB

Advisory) will focus on the approach to

planning and problem formulation,

illustrated primarily by the draft case

study for Waquoit Bay, with additional

examples being drawn from the other

case studies where appropriate. The

Charge to the Committee is to evaluate

the process for: framing the risk

assessment to respond to management

goals; selecting relevant assessment

endpoints and measures; developing

conceptual models that represent the

interactions among multiple stressors,

exposure pathways, ecological effects,

and ecosystem processes; and

developing an analysis plan.

Single copies of the materials

supplied to the Committee, including

the draft case studies, can be obtained

by contacting Ms. Crystal Robinson,

EPA Risk Assessment Forum (W635),

401 M Street, SW, Washington, DC

20460, telephone (202) 260–6743.
Federal Register / Vol. 61, No. 123 / Tuesday, June 25, 1996 / Notices 32797

Background on the Integrated Risk

Project

For background on this project, please

see information listed above in the

meeting announcement for the IRP.

Anyone wishing to make a brief oral

presentation at the EPEC meeting must

contact Ms. Stephanie Sanzone,

Designated Federal Official for the

EPEC, in writing no later than 4:00 pm,

July 8, 1996, at the above address, via

fax (202) 260–7118 or via the Internet at

Sanzone.Stephanie@epamail.epa.gov.

The request should identify the name of

the individual who will make the

presentation and an outline of the issues

to be addressed. At least 35 copies of

any written comments to the Committee

are to be given to Ms. Sanzone no later

than the time of the presentation for

distribution to the Committee and the

interested public. Ms. Sanzone may be

contacted by phone at (202) 260–6557.

See below for additional information on

providing comments to the SAB.

3. Environmental Health Committee

The Environmental Health Committee

(EHC) of the Science Advisory Board

(SAB) will meet on July 18–19, 1996 at

the Holiday Inn Georgetown, 2101

Wisconsin Avenue NW, Washington

D.C. 20007, telephone (202) 338–4600.

The meeting will start at 9:00 a.m. and

end no later that 5:00 p.m. (Eastern

Daylight Time) each day. Due to limited

space, seating at the meeting will be on

a first-come basis. The main purpose of

the meeting is to discuss and review two

documents: the EPA’s Proposed

Guidelines for Neurotoxicity Risk

Assessment and the revised Thyroid

Cancer Risk Assessment Policy

Document.

Background on the Reviews

The Committee’s review of the

Neurotoxicity Risk Assessment

Guidelines will include the following

issues: (a) combining hazard

identification and dose-response

evaluation to reflect more accurately the

process used for noncancer health; (b)

compensation and recovery of function

in neurotoxicological studies and how

to account for compensation in

neurotoxicology risk assessment; (c) the

use of blood and/or brain

acetylcholinesterase activity as an

indication of neurotoxicity for risk

assessment; (d) endpoints indicative of

neurotoxicity that may not be covered

by these proposed Guidelines, e.g.,

endocrine disruption or

neuroendocrine-mediated neurotoxicity;

(e) the completeness of the description

of the endpoints used in human and

animal neurotoxicological assessments;

(f). the possibility of no threshold for

some neurotoxic agents; (g) the

treatment of susceptible populations

and individuals by the proposed

Guidelines; and (h) the use of the

Benchmark Dose in Neurotoxicity Risk

Assessment.

The review of the Thyroid Cancer

Risk Assessment Policy Document will

include the following issues: (a) the

relevant science and its support of the

proposed science policy position; (b) the

summary of the state of knowledge

regarding potential susceptibility for

thyroid cancer development and the

proposed science policy position; (c) the

reasonableness of the science policy

position that disruption in thyroidpituitary status may be associated with

increases in thyroid cancer risk; (d) the

seven factors for assessing whether or

not a chemical has antithyroid activity

and the minimal criteria for making

such a determination; (e) the proposed

default assumption that the significance

of human exposure to antithyroid

carcinogens should be evaluated by

margin-of-exposure considerations

unless biologically based models and

data are available; and (f) the nature,

adequacy and completeness of the

provided case studies and of the

guidance for using the information.

For Further Information—Single

copies of the review materials for the

Proposed Guidelines for Neurotoxicity

Risk Assessment (which was published

in full in the Federal Register, Vol 60,

No. 192, pages 52032–52056, October 4,

1995) can be obtained from Dr. William

Wood (8103), US EPA, 401 M Street,

SW, Washington, DC 20460, telephone

(202) 260–1095, fax (202) 260–3955, or

by sending a request via Internet to

wood.bill@epamail.epa.gov. PLEASE

NOTE THAT THIS DOCUMENTATION

IS NOT AVAILABLE FROM THE SAB.

Members of the public desiring

additional technical information about

the Guidelines should contact Dr. Hugh

Tilson, Neurotoxicology Division (MD–

74B), National Health and

Environmental Effects Research

Laboratory, Research Triangle Park, NC

27711, telephone (919) 541–2671 or fax

(919) 541–4849, or by sending a request

via Internet to

tilson@herl45.herl.epa.gov.

Single copies of the review materials

for the Thyroid Cancer Risk Assessment

Policy Document, as well as additional

technical information, can be obtained

from Dr. Richard Hill, Office of

Prevention (7101), US EPA, 401 M

Street, SW, Washington, DC 20460,

telephone (202) 260–2894, fax (202)

260–1847, or by sending a request via

Internet to

hill.richard@epamail.epa.gov. PLEASE

NOTE THAT THIS DOCUMENTATION

IS NOT AVAILABLE FROM THE SAB.

Members of the public desiring

additional information about the

meeting, including a draft agenda,

should contact Ms. Mary Winston, Staff

Secretary, Committee Operations Staff,

Science Advisory Board (1400), US

EPA, 401 M Street, SW, Washington DC

20460, telephone (202) 260–6552, fax

(202) 260–7118, or Internet at:

winston.mary@epamail.epa.gov.

Anyone wishing to make an oral

presentation at the EHC meeting must

contact Mr. Samuel Rondberg,

Designated Federal Official for the EHC,

in writing at the above address no later

than 4:00 p.m., July 11, 1996 via fax

(202) 260–7118 or via Internet at:

rondberg.sam@epamail.epa.gov. The

request should identify the name of the

individual who will make the

presentation and an outline of the issues

to be addressed. At least 35 copies of

any written comments to the Committee

are to be given to Mr. Rondberg no later

than the time of the presentation for

distribution to the Committee and the

interested public. Mr. Rondberg may be

contacted by telephone at (202) 260–

2559.

4. Drinking Water Committee

The Drinking Water Committee

(DWC) will meet on July 16–18, 1996, at

the Holiday Inn Georgetown, 2101

Wisconsin Avenue NW, Washington,

D.C. 20007, telephone (202) 338–4600.

The meeting will begin at 9:00 a.m. on

July 16 and at 8:30 a.m. on July 17 and

18, and end no later than 5:00 p.m. each

day.

The main purpose of the meeting is

to: (a) evaluate the statistical approach

to enumerate pathogens in drinking

water supplies; (b) discuss the proposals

submitted for DWC review in Fiscal

Year 1997; (c) identify testing

procedures, and advice needed from the

DWC regarding endocrine disruptors;

(d) consider the impacts revisions to the

Cancer Guidelines may have on the

assessment of waterborne cancer

hazards; and, e) finish drafting the

DWC’s report on the Agency’s Five Year

Research Plan for Microbes and

Disinfectant By-Products.

Background on the Statistical

Evaluation of Pathogenic Parasites

The Agency has conducted an

Information Collection Rule (ICR) which

among other things provided data about

the occurrence of the pathogenic

parasites Cryptosporidium and Giardia

in several hundred water supplies.

Information about pathogen occurrence

and the treatment options is needed for

a Regulatory Impact Analysis of the
32798 Federal Register / Vol. 61, No. 123 / Tuesday, June 25, 1996 / Notices

Enhanced Surface Water Treatment Rule

(ESWTR). While the Office of Water

(OW) does not believe that current

statistical methods are appropriate for

evaluating occurrence and treatment

efficacy at individual sites, it does think

it has developed an appropriate

approach for conducting a National

Impact Analysis. The charge to the

Committee is to evaluate: (a) the factual

and conceptual soundness of the

approach and methods used, and the

soundness of the results and

conclusions of the report; (b) the

suitability of the assumptions and

conditions tested in the report; (c) the

suitability of the report as a basis for

making a decision on the use of

protozoan monitoring data for a national

impact assessment; and, (d) whether the

degree of accuracy and precision of the

protozoan method is acceptable for an

impact analysis.

For Further Information—Single

copies of the Statistical Methods can be

obtained by contacting Mr. John Fox,

Office of Water (4304), US EPA, 401 M

Street, SW, Washington, DC 20460,

telephone (202) 260–9889 or fax (202)

260–7185, or by sending a request via

Internet to Fox.John@epamail.epa.gov.

Members of the public desiring

additional information about the

meeting, including a draft agenda,

should contact Ms. Mary Winston, Staff

Secretary, Committee Operations Staff,

Science Advisory Board (1400), U.S.

EPA, 401 M Street SW., Washington DC

20460, telephone (202) 260–6552, fax

(202) 260–7118, or by Internet at:

winston.mary@epamail.epa.gov.

Anyone wishing to make an oral

presentation at the meeting must contact

Dr. Jack Kooyoomjian, Designated

Federal Official for the Drinking Water

Committee, in writing no later than 4:00

p.m., July 9, 1996 (at the above address),

via fax (202) 260–7118 or by Internet at:

kooyoomjian.jack@epamail.epa.gov. The

request should identify the name of the

individual who will make the

presentation and an outline of the issues

to be addressed. At least 35 copies of

any written comments to the Committee

are to be given to Dr. Kooyoomjian no

later than the time of the presentation

for distribution to the Committee and

the interested public. To discuss

technical aspects of the meeting, please

contact Dr. Kooyoomjian on telephone

(202) 260–2560.

5. Radiation Advisory Committee (RAC)

The Radiation Advisory Committee

(RAC) of the Science Advisory Board

(SAB) , will meet on Wednesday, July

31 and Thursday, August 1, 1996 at the

Environmental Protection Agency,

Washington Information Center, Room

17, 401 M Street, S.W., Washington, DC

20460. On July 31, the meeting will

begin at 9:00 am and adjourn no later

than 5:30 pm. On August 1, the meeting

will begin at 8:30 am and will adjourn

no later than 4:00 pm. At this meeting,

the RAC will conduct planning for

Fiscal Year 1997, planning for an

upcoming review on the Multi-Agency

Radiation Survey and Site Investigation

Manual (MARSSIM), and receive

briefings from the staff of the Office of

Radiation and Indoor Air (ORIA) on the

following topics: uncertainty in

radiation risk estimates, models, and

environmental goals for ORIA, and a

consultation on environmental

indicators.

Background

The draft documents that are the

subject of this review are available from

the originating EPA office and are not

available from the SAB Office. At the

present time, no draft documents have

been provided to the RAC, but it is

anticipated that draft chapters one and

two of the MARSSIM will be available

for informational reading. These draft

documents will be available from the

ORIA staff. To obtain copies, please

contact the Office of Radiation and

Indoor Air (ORIA/RPD/MARSSIM)

(6603J), U.S. Environmental Protection

Agency, 401 M Street, S.W.,

Washington, DC 20460, fax (202) 233–

9650.

Anyone wishing to make a brief oral

presentation at the RAC meeting must

contact Dr. Kooyoomjian in writing no

later than 4:00 pm, July 24, 1996 at the

address below, via fax (202) 260–7118,

or via the Internet at

Koojoomjian.Jack@epamail.epa.gov. The

request should identify the name of the

individual who will make the

presentation and an outline of the issues

to be addressed. At least 35 copies of

any written comments to the Committee

are to be given to Dr. Kooyoomjian no

later than the time of the presentation

for distribution to the Committee and

the interested public. Dr. Kooyoomjian

may be contacted by phone at (202)

260–2560. In order to obtain a copy of

the draft agenda, please contact Ms.

Diana L. Pozun, Staff Secretary,

Committee Operations Staff, Science

Advisory Board (1400), 401 M Street,

SW, Washington, DC 20460, tel. (202)

260–6552, fax (202) 260–7118, or via the

INTERNET at:

Pozun.Diana@epamail.epa.gov. See

below for additional information on

providing comments to the SAB.

Providing Oral or Written Comments at

SAB Meetings

The Science Advisory Board expects

that public statements presented at its

meetings will not be repetitive of

previously submitted oral or written

statements. In general, each individual

or group making an oral presentation

will be limited to a total time of ten

minutes. For conference call meetings,

opportunities for oral comment will be

limited to no more than five minutes per

speaker and no more than fifteen

minutes total. Written comments (at

least 35 copies) received in the SAB

Staff Office sufficiently prior to a

meeting date, may be mailed to the

relevant SAB committee or

subcommittee prior to its meeting;

comments received too close to the

meeting date will normally be provided

to the committee at its meeting. Written

comments may be provided to the

relevant committee or subcommittee up

until the time of the meeting.

Dated: June 19, 1996.

John R. Fowle, III,

Acting Staff Director, Science Advisory Board.

[FR Doc. 96–16127 Filed 6–24–96; 8:45 am]

BILLING CODE 6560–50–P

[SW–FRL–5524–7]

Hazardous Waste Management

System; Identification and Listing of

Hazardous Waste; Public Notice

AGENCY: Environmental Protection

Agency.

ACTION: Notice of Extension of Delisting

Delegation to Regions.

SUMMARY: On October 10, 1995, the EPA

Administrator extended the delegation

of the hazardous waste delisting

authority to EPA’s ten Regional Offices.

As result of this action, delisting

petitions which require a Federal

decision will now be reviewed by the

appropriate EPA Regional Office instead

of EPA Headquarters. This notice

provides a list of Regional delisting

contacts. They should be contacted for

information about the delisting process

and for guidance on submitting delisting

petitions to EPA Regional Offices.

DATES: The EPA Regions have the

authority for providing decisions on

delisting petitions as of October 10,

1995.

FOR FURTHER INFORMATION CONTACT:

RCRA Hotline, toll free at (800) 424–

9346 or at (703) 412–9810, or Shen-yi

Yang, Office of Solid Waste (5304W),

U.S. Environmental Protection Agency,

401 M Street SW., Washington, D.C.

20460, (703) 308–0437.