Federal Register / Vol. 76, No. 245 / Wednesday, December 21, 2011 / Notices 79173 

II. Additional Information About 

Commenting on the Proposed Consent 

Decree 

A. How can I get a copy of the consent 

decree? 

The official public docket for this 

action (identified by Docket ID No. 

EPA–HQ–OGC–2011–0935) contains a 

copy of the proposed consent decree. 

The official public docket is available 

for public viewing at the Office of 

Environmental Information (OEI) Docket 

in the EPA Docket Center, EPA West, 

Room 3334, 1301 Constitution Ave. 

NW., Washington, DC. The EPA Docket 

Center Public Reading Room is open 

from 8:30 a.m. to 4:30 p.m., Monday 

through Friday, excluding legal 

holidays. The telephone number for the 

Public Reading Room is (202) 566–1744, 

and the telephone number for the OEI 

Docket is (202) 566–1752. 

An electronic version of the public 

docket is available through 

www.regulations.gov. You may use 

www.regulations.gov to submit or view 

public comments, access the index 

listing of the contents of the official 

public docket, and to access those 

documents in the public docket that are 

available electronically. Once in the 

system, key in the appropriate docket 

identification number then select 

‘‘search’’. 

It is important to note that EPA’s 

policy is that public comments, whether 

submitted electronically or in paper, 

will be made available for public 

viewing online at www.regulations.gov 

without change, unless the comment 

contains copyrighted material, CBI, or 

other information whose disclosure is 

restricted by statute. Information 

claimed as CBI and other information 

whose disclosure is restricted by statute 

is not included in the official public 

docket or in the electronic public 

docket. EPA’s policy is that copyrighted 

material, including copyrighted material 

contained in a public comment, will not 

be placed in EPA’s electronic public 

docket but will be available only in 

printed, paper form in the official public 

docket. Although not all docket 

materials may be available 

electronically, you may still access any 

of the publicly available docket 

materials through the EPA Docket 

Center. 

B. How and to whom do I submit 

comments? 

You may submit comments as 

provided in the ADDRESSES section. 

Please ensure that your comments are 

submitted within the specified comment 

period. Comments received after the 

close of the comment period will be 

marked ‘‘late.’’ EPA is not required to 

consider these late comments. 

If you submit an electronic comment, 

EPA recommends that you include your 

name, mailing address, and an email 

address or other contact information in 

the body of your comment and with any 

disk or CD ROM you submit. This 

ensures that you can be identified as the 

submitter of the comment and allows 

EPA to contact you in case EPA cannot 

read your comment due to technical 

difficulties or needs further information 

on the substance of your comment. Any 

identifying or contact information 

provided in the body of a comment will 

be included as part of the comment that 

is placed in the official public docket, 

and made available in EPA’s electronic 

public docket. If EPA cannot read your 

comment due to technical difficulties 

and cannot contact you for clarification, 

EPA may not be able to consider your 

comment. 

Use of the www.regulations.gov Web 

site to submit comments to EPA 

electronically is EPA’s preferred method 

for receiving comments. The electronic 

public docket system is an ‘‘anonymous 

access’’ system, which means EPA will 

not know your identity, email address, 

or other contact information unless you 

provide it in the body of your comment. 

In contrast to EPA’s electronic public 

docket, EPA’s electronic mail (email) 

system is not an ‘‘anonymous access’’ 

system. If you send an email comment 

directly to the Docket without going 

through www.regulations.gov, your 

email address is automatically captured 

and included as part of the comment 

that is placed in the official public 

docket, and made available in EPA’s 

electronic public docket. 

Patricia Embrey, 

Acting Associate General Counsel. 

[FR Doc. 2011–32648 Filed 12–20–11; 8:45 am] 

BILLING CODE P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–HQ–OPP–2011–0939; FRL–9329–7] 

Registration Review; Pesticide 

Dockets Opened for Review and 

Comment, and Notice of Availability of 

Final Work Plans for Certain Pesticides 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice. 

SUMMARY: EPA has established 

registration review dockets for the 

pesticides listed in the table in Unit 

III.A. With this document, EPA is 

opening the public comment period for 

these registration reviews. Registration 

review is EPA’s periodic review of 

pesticide registrations to ensure that 

each pesticide continues to satisfy the 

statutory standard for registration, that 

is, the pesticide can perform its 

intended function without unreasonable 

adverse effects on human health or the 

environment. Registration review 

dockets contain information that will 

assist the public in understanding the 

types of information and issues that the 

Agency may consider during the course 

of registration reviews. Through this 

program, EPA is ensuring that each 

pesticide’s registration is based on 

current scientific and other knowledge, 

including its effects on human health 

and the environment. 

This document also announces the 

availability of amended final work plans 

for the registration review of the 

pesticides cryolite, prodiamine, asulam, 

and etofenprox. 

DATES: Comments must be received on 

or before February 21, 2012. 

ADDRESSES: Submit your comments 

identified by the docket identification 

(ID) number for the specific pesticide of 

interest provided in the table in Unit 

III.A., by one of the following methods: 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the on-line 

instructions for submitting comments. 

• Mail: Office of Pesticide Programs 

(OPP) Regulatory Public Docket (7502P), 

Environmental Protection Agency, 1200 

Pennsylvania Ave. NW., Washington, 

DC 20460–0001. 

• Delivery: OPP Regulatory Public 

Docket (7502P), Environmental 

Protection Agency, Rm. S–4400, One 

Potomac Yard (South Bldg.), 2777 S. 

Crystal Dr., Arlington, VA. Deliveries 

are only accepted during the Docket 

Facility’s normal hours of operation 

(8:30 a.m. to 4 p.m., Monday through 

Friday, excluding legal holidays). 

Special arrangements should be made 

for deliveries of boxed information. The 

Docket Facility telephone number is 

(703) 305–5805. 

Instructions: Direct your comments to 

the docket ID numbers listed in the table 

in Unit III.A. for the pesticides you are 

commenting on. EPA’s policy is that all 

comments received will be included in 

the docket without change and may be 

made available on-line at http:// 

www.regulations.gov, including any 

personal information provided, unless 

the comment includes information 

claimed to be Confidential Business 

Information (CBI) or other information 

whose disclosure is restricted by statute. 

Do not submit information that you 

consider to be CBI or otherwise 

protected through regulations.gov or 


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email. The regulations.gov Web site is 

an ‘‘anonymous access’’ system, which 

means, EPA will not know your identity 

or contact information unless you 

provide it in the body of your comment. 

If you send an email comment directly 

to EPA without going through 

regulations.gov, your email address will 

be automatically captured and included 

as part of the comment that is placed in 

the docket and made available on the 

Internet. If you submit an electronic 

comment, EPA recommends that you 

include your name and other contact 

information in the body of your 

comment and with any disk or CD–ROM 

you submit. If EPA cannot read your 

comment due to technical difficulties 

and cannot contact you for clarification, 

EPA may not be able to consider your 

comment. Electronic files should avoid 

the use of special characters, any form 

of encryption, and be free of any defects 

or viruses. 

Docket: All documents in the docket 

are listed in the docket index available 

at http://www.regulations.gov. Although 

listed in the index, some information is 

not publicly available, e.g., CBI or other 

information whose disclosure is 

restricted by statute. Certain other 

material, such as copyrighted material, 

is not placed on the Internet and will be 

publicly available only in hard copy 

form. Publicly available docket 

materials are available either in the 

electronic docket at http:// 

www.regulations.gov, or, if only 

available in hard copy, at the OPP 

Regulatory Public Docket in Rm. 

S–4400, One Potomac Yard (South 

Bldg.), 2777 S. Crystal Dr., Arlington, 

VA. The hours of operation of this 

Docket Facility are from 8:30 a.m. to 4 

p.m., Monday through Friday, excluding 

legal holidays. The Docket Facility 

telephone number is (703) 305–5805. 

FOR FURTHER INFORMATION CONTACT: For 

pesticide-specific information contact: 

The Chemical Review Manager 

identified in the table in Unit III.A. for 

the pesticide of interest. 

For general information contact: 

Kevin Costello, Pesticide Re-evaluation 

Division (7508P), Office of Pesticide 

Programs, Environmental Protection 

Agency, 1200 Pennsylvania Ave. NW., 

Washington, DC 20460–0001; telephone 

number: (703) 305–5026; fax number: 

(703) 308–8090; email address: 

costello.kevin@epa.gov. 

SUPPLEMENTARY INFORMATION: 

I. General Information 

A. Does this action apply to me? 

This action is directed to the public 

in general, and may be of interest to a 

wide range of stakeholders including 

environmental, human health, 

farmworker, and agricultural advocates; 

the chemical industry; pesticide users; 

and members of the public interested in 

the sale, distribution, or use of 

pesticides. Since others also may be 

interested, the Agency has not 

attempted to describe all the specific 

entities that may be affected by this 

action. If you have any questions 

regarding the applicability of this action 

to a particular entity, consult the person 

listed under FOR FURTHER INFORMATION

CONTACT. 

B. What should I consider as I prepare 

my comments for EPA? 

1. Submitting CBI. Do not submit this 

information to EPA through 

regulations.gov or email. Clearly mark 

the part or all of the information that 

you claim to be CBI. For CBI 

information in a disk or CD–ROM that 

you mail to EPA, mark the outside of the 

disk or CD–ROM as CBI and then 

identify electronically within the disk or 

CD–ROM the specific information that 

is claimed as CBI. In addition to one 

complete version of the comment that 

includes information claimed as CBI, a 

copy of the comment that does not 

contain the information claimed as CBI 

must be submitted for inclusion in the 

public docket. Information so marked 

will not be disclosed except in 

accordance with procedures set forth in 

40 CFR part 2. 

2. Tips for preparing your comments. 

When submitting comments, remember 

to: 

i. Identify the document by docket ID 

number and other identifying 

information (subject heading, Federal 

Register date and page number). 

ii. Follow directions. The Agency may 

ask you to respond to specific questions 

or organize comments by referencing a 

Code of Federal Regulations (CFR) part 

or section number. 

iii. Explain why you agree or disagree; 

suggest alternatives and substitute 

language for your requested changes. 

iv. Describe any assumptions and 

provide any technical information and/ 

or data that you used. 

v. If you estimate potential costs or 

burdens, explain how you arrived at 

your estimate in sufficient detail to 

allow for it to be reproduced. 

vi. Provide specific examples to 

illustrate your concerns and suggest 

alternatives. 

vii. Explain your views as clearly as 

possible, avoiding the use of profanity 

or personal threats. 

viii. Make sure to submit your 

comments by the comment period 

deadline identified. 

3. Environmental justice. EPA seeks to 

achieve environmental justice, the fair 

treatment and meaningful involvement 

of any group, including minority and/or 

low income populations, in the 

development, implementation, and 

enforcement of environmental laws, 

regulations, and policies. To help 

address potential environmental justice 

issues, the Agency seeks information on 

any groups or segments of the 

population who, as a result of their 

location, cultural practices, or other 

factors, may have atypical or 

disproportionately high and adverse 

human health impacts or environmental 

effects from exposure to the pesticides 

discussed in this document, compared 

to the general population. 

II. Authority 

EPA is initiating its reviews of the 

pesticides identified in this document 

pursuant to section 3(g) of the Federal 

Insecticide, Fungicide, and Rodenticide 

Act (FIFRA) and the Procedural 

Regulations for Registration Review at 

40 CFR part 155, subpart C. Section 3(g) 

of FIFRA provides, among other things, 

that the registrations of pesticides are to 

be reviewed every 15 years. Under 

FIFRA, a pesticide product may be 

registered or remain registered only if it 

meets the statutory standard for 

registration given in FIFRA section 

3(c)(5). When used in accordance with 

widespread and commonly recognized 

practice, the pesticide product must 

perform its intended function without 

unreasonable adverse effects on the 

environment; that is, without any 

unreasonable risk to man or the 

environment, or a human dietary risk 

from residues that result from the use of 

a pesticide in or on food. 

III. Registration Reviews 

A. What action is the agency taking? 

As directed by FIFRA section 3(g), 

EPA is reviewing the pesticide 

registrations identified in the table in 

this unit to assure that they continue to 

satisfy the FIFRA standard for 

registration—that is, they can still be 

used without unreasonable adverse 

effects on human health or the 

environment. A pesticide’s registration 

review begins when the Agency 

establishes a docket for the pesticide’s 

registration review case and opens the 

docket for public review and comment. 

At present, EPA is opening registration 

review dockets for the cases identified 

in the following table. 


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Federal Register / Vol. 76, No. 245 / Wednesday, December 21, 2011 / Notices 79175 

TABLE—REGISTRATION REVIEW DOCKETS OPENING

Registration review case name and Number Docket ID No. Chemical review manager, telephone number, e-mail 

address 

Benfluralin, 2030 .................................................................. EPA–HQ–OPP–2011– 

0931.

Cathryn Britton, 703–308–0136, 

stclair.katherine@epa.gov. 

Bis(trichloromethyl)sulfone, 2055 ........................................ EPA–HQ–OPP–2011– 

0614.

Seiichi Murasaki, 703–347–0163, 

murasaki.seiichi@epa.gov. 

Clothianidin, 7620 ................................................................ EPA–HQ–OPP–2011– 

0865.

Rusty Wasem, 703–305–6979, wasem.russell@epa.gov. 

Dinotefuran, 7441 ................................................................ EPA–HQ–OPP–2011– 

0920.

Steven Snyderman, 703–347–0249, 

snyderman.steven@epa.gov. 

Methylene bis(thiocyanate), 2415 ....................................... EPA–HQ–OPP–2011– 

0613.

Rebecca von dem Hagen, 703–305–6785, vondemhagen.rebecca@epa.gov. 

Orthosulfamuron, 7270 ........................................................ EPA–HQ–OPP–2011– 

0438.

Khue Nguyen, 703–347–0248, nguyen.khue@epa.gov. 

Paraquat dichloride, 0262 ................................................... EPA–HQ–OPP–2011– 

0855.

Molly Clayton, 703–603–0522, clayton.molly@epa.gov. 

Pyrethrin and derivatives, 2580 ........................................... EPA–HQ–OPP–2011– 

0885.

Joel Wolf, 703–347–0228, wolf.joel@epa.gov. 

Sodium Omadine, 0209 ....................................................... EPA–HQ–OPP–2011– 

0611.

Eliza Blair, 703–308–7279, blair.eliza@epa.gov. 

Sumithrin (phenothrin), 0426 ............................................... EPA–HQ–OPP–2011– 

0539.

Carissa Cyran, 703–347–8781, cyran.carissa@epa.gov. 

Tetramethrin, 2660 .............................................................. EPA–HQ–OPP–2011– 

0907.

Monica Wait, 703–347–8019, wait.monica@epa.gov. 

Thiamethoxam, 7614 ........................................................... EPA–HQ–OPP–2011– 

0581.

Carissa Cyran, 703–347–8781, cyran.carissa@epa.gov. 

Thiobencarb, 2665 ............................................................... EPA–HQ–OPP–2011– 

0932.

Kelly Ballard, 703–305–8126, ballard.kelly@epa.gov. 

Tri-n butyl tetradecyl phosphonium chloride, 5111 ............. EPA–HQ–OPP–2011– 

0952.

Eliza Blair, 703–308–7279, blair.eliza@epa.gov. 

Undecylenic Acid, 4095 ....................................................... EPA–HQ–OPP–2011– 

0910.

Tom Myers, 703–308–8589, myers.tom@epa.gov. 

EPA is announcing the availability of 

amended final work plans for the 

registration review of the pesticides 

cryolite (docket EPA–HQ–OPP–2011– 

0173), prodiamine (docket EPA–HQ– 

OPP–2010–0920), and asulam and 

sodium asulam (docket EPA–HQ–OPP– 

2010–0783). These final work plans 

have been amended to incorporate 

changes to data requirements for 

registration review. EPA is also 

announcing the availability of the 

amended final work plan for etofenprox 

(docket EPA–HQ–OPP–2007–0804); this 

final work plan was amended to include 

pet spot-on product label changes and 

the issuance of a data call-in (DCI) to 

support the registration review of 

etofenprox. 

B. Docket Content 

1. Review dockets. The registration 

review dockets contain information that 

the Agency may consider in the course 

of the registration review. The Agency 

may include information from its files 

including, but not limited to, the 

following information: 

• An overview of the registration 

review case status. 

• A list of current product 

registrations and registrants. 

• Federal Register notices regarding 

any pending registration actions. 

• Federal Register notices regarding 

current or pending tolerances. 

• Risk assessments. 

• Bibliographies concerning current 

registrations. 

• Summaries of incident data. 

• Any other pertinent data or 

information. 

Each docket contains a document 

summarizing what the Agency currently 

knows about the pesticide case and a 

preliminary work plan for anticipated 

data and assessment needs. Additional 

documents provide more detailed 

information. During this public 

comment period, the Agency is asking 

that interested persons identify any 

additional information they believe the 

Agency should consider during the 

registration reviews of these pesticides. 

The Agency identifies in each docket 

the areas where public comment is 

specifically requested, though comment 

in any area is welcome. 

2. Other related information. More 

information on these cases, including 

the active ingredients for each case, may 

be located in the registration review 

schedule on the Agency’s Web site at 

http://www.epa.gov/oppsrrd1/ 

registration_review/schedule.htm. 

Information on the Agency’s registration 

review program and its implementing 

regulation may be seen at http:// 

www.epa.gov/oppsrrd1/ 

registration_review. 

3. Information submission 

requirements. Anyone may submit data 

or information in response to this 

document. To be considered during a 

pesticide’s registration review, the 

submitted data or information must 

meet the following requirements: 

i. To ensure that EPA will consider 

data or information submitted, 

interested persons must submit the data 

or information during the comment 

period. The Agency may, at its 

discretion, consider data or information 

submitted at a later date. 

ii. The data or information submitted 

must be presented in a legible and 

useable form. For example, an English 

translation must accompany any 

material that is not in English and a 

written transcript must accompany any 

information submitted as an 

audiographic or videographic record. 

Written material may be submitted in 

paper or electronic form. 

iii. Submitters must clearly identify 

the source of any submitted data or 

information. 

iv. Submitters may request the 

Agency to reconsider data or 

information that the Agency rejected in 

a previous review. However, submitters 

must explain why they believe the 


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79176 Federal Register / Vol. 76, No. 245 / Wednesday, December 21, 2011 / Notices 

Agency should reconsider the data or 

information in the pesticide’s 

registration review. 

As provided in 40 CFR 155.58, the 

registration review docket for each 

pesticide case will remain publicly 

accessible through the duration of the 

registration review process; that is, until 

all actions required in the final decision 

on the registration review case have 

been completed. 

List of Subjects 

Environmental protection, Pesticides 

and pests. 

Dated: December 14, 2011. 

Richard P. Keigwin, Jr., 

Director, Pesticide Re-evaluation Division, 

Office of Pesticide Programs. 

[FR Doc. 2011–32658 Filed 12–20–11; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–OW–2011–0466; FRL–9609–3] 

Notice of Availability of Draft 

Recreational Water Quality Criteria and 

Request for Scientific Views 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice. 

SUMMARY: Pursuant to section 304(a) of 

the Clean Water Act (CWA), the 

Environmental Protection Agency (EPA) 

is announcing the availability of the 

draft document Recreational Water 

Quality Criteria (RWQC). The document 

contains the EPA’s draft ambient water 

quality criteria recommendations for 

protecting human health in ambient 

waters that are designated for primary 

contact recreation. CWA Section 304(c) 

water quality criteria recommendations 

are intended as guidance to States and 

authorized Tribes in developing water 

quality standards. The draft RWQC 

document describes the relevant 

scientific findings, explains how these 

findings were used to derive criteria, 

and lists the water quality methods 

associated with the criteria. 

The draft RWQC differs from the 

current 1986 RWQC in the following 

ways: the EPA introduces a new term, 

Statistical Threshold Value (STV), as a 

clarification and replacement for the 

term single sample maximum (SSM); 

there are no longer recommendations for 

different criteria values for beaches used 

with more or less frequency; the EPA 

introduces a rapid analytical technique 

for the detection of enterococci in 

recreational water; the EPA provides 

information on tools for assessing and 

managing recreational waters, such as 

predictive modeling, and for developing 

site-specific criteria. 

The CWA, as amended by the Beaches 

Environmental Assessment and Coastal 

Health (BEACH) Act of 2000, requires 

the EPA to conduct studies associated 

with pathogens and human health 

under Section 104(v), and to publish 

new or revised criteria for pathogens 

and pathogen indicators based on those 

studies under Section 304(a)(9). The 

draft criteria announced today for 

scientific views are the draft new or 

revised criteria that EPA is required to 

publish under Section 304(a)(9) of the 

CWA, as amended by the BEACH Act. 

DATES: Scientific views must be 

received on or before February 21, 2012. 

Comments postmarked after this date 

may not be considered. 

ADDRESSES: Submit your scientific 

views, identified by Docket ID No. EPA– 

HQ–OW–2011–0466, and obtain the 

document (EPA–HQ–OW–2011–0466– 

0002) by one of the following methods: 

• www.regulations.gov: Follow the 

on-line instructions for submitting 

comments. 

• Email: OW-Docket@epa.gov. 

• Mail: U.S. Environmental 

Protection Agency; EPA Docket Center 

(EPA/DC) Water Docket, MC 28221T; 

1200 Pennsylvania Avenue NW., 

Washington, DC 20460. 

• Hand Delivery: EPA Docket Center, 

1301 Constitution Ave. NW., EPA West, 

Room 3334, Washington, DC. Such 

deliveries are only accepted during the 

Docket’s normal hours of operation, and 

special arrangements should be made 

for deliveries of boxed information. 

Instructions: Direct your comments to 

Docket ID No. EPA–HQ–OW–2011– 

0466. The EPA’s policy is that all 

comments received will be included in 

the public docket without change and 

may be made available online at 

www.regulations.gov, including any 

personal information provided, unless 

the comment includes information 

claimed to be Confidential Business 

Information (CBI) or other information 

whose disclosure is restricted by statute. 

Do not submit information that you 

consider to be CBI or otherwise 

protected through www.regulations.gov 

or email. The www.regulations.gov Web 

site is an ‘‘anonymous access’’ system, 

which means the EPA will not know 

your identity or contact information 

unless you provide it in the body of 

your comment. If you send an email 

comment directly to the EPA without 

going through www.regulations.gov your 

email address will be automatically 

captured and included as part of the 

comment that is placed in the public 

docket and made available on the 

Internet. If you submit an electronic 

comment, the EPA recommends that 

you include your name and other 

contact information in the body of your 

comment and with any disk or CD–ROM 

you submit. If the EPA cannot read your 

comment due to technical difficulties 

and cannot contact you for clarification, 

the EPA may not be able to consider 

your comment. Electronic files should 

avoid the use of special characters, any 

form of encryption, and be free of any 

defects or viruses. For additional 

information about the EPA’s public 

docket visit the EPA Docket Center 

homepage at http://www.epa.gov/ 

epahome/dockets.htm. 

Docket: All documents in the docket 

are listed in the www.regulations.gov 

index. Although listed in the index, 

some information is not publicly 

available, e.g., CBI or other information 

whose disclosure is restricted by statute. 

Certain other material, such as 

copyrighted material, will be publicly 

available only in hard copy. Publicly 

available docket materials are available 

either electronically in 

www.regulations.gov or in hard copy at 

the Office of Water Docket/EPA/DC, 

1301 Constitution Ave. NW., EPA West, 

Room 3334, Washington, DC. This 

Docket Facility is open from 8:30 a.m. 

until 4:30 p.m., EST, Monday through 

Friday, excluding legal holidays. The 

telephone number for the Public 

Reading Room is (202) 566–1744, and 

the telephone number for the Office of 

Water Docket is (202) 566–2426. 

FOR FURTHER INFORMATION CONTACT: For 

questions concerning the science 

supporting this criteria, contact Sharon 

Nappier, Health and Ecological Criteria 

Division (4304T), 

nappier.sharon@epa.gov, U.S. EPA, 

1200 Pennsylvania Ave. NW., 

Washington, DC 20460; (202) 566–0740. 

For questions concerning the use of 

EPA’s criteria recommendations, contact 

Tracy Bone, Standards and Health 

Protection Division (4305T), 

bone.tracy@epa.gov, U.S. EPA, 1200 

Pennsylvania Ave. NW., Washington, 

DC 20460; (202) 564–5257. 

SUPPLEMENTARY INFORMATION: 

I. What are Section 304(a) water quality 

criteria? 

Section 304(a) water quality criteria 

are recommendations developed by EPA 

under authority of section 304(a) of the 

Clean Water Act based on the latest 

scientific information on the 

relationship that the effect of a 

constituent concentration has on 

particular aquatic species and/or human 

health. 


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