[Federal Register Volume 83, Number 73 (Monday, April 16, 2018)]
[Notices]
[Pages 16356-16357]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-07746]


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ENVIRONMENTAL PROTECTION AGENCY

[Docket ID No. EPA-HQ-ORD-2018-0132; FRL-9976-85-ORD]


Availability of the IRIS Assessment Plan for Ammonia and Ammonium 
Salts: Noncancer Assessment for Oral Exposure

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of public comment period.

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SUMMARY: The Environmental Protection Agency (EPA) is announcing a 30-
day public comment period associated with release of the draft IRIS 
Assessment Plan for ammonia and ammonium salts. This document 
communicates information on the scoping needs identified by EPA program 
and regional offices and the IRIS Program's initial problem formulation 
activities. Specifically, the assessment plan outlines the objectives 
for each assessment and the type of evidence considered most pertinent 
to address the scoping needs. EPA is releasing this draft IRIS 
Assessment Plan for public comment at least 30 days in advance of a 
public science webinar planned on May 23, 2018.

DATES: The 30-day public comment period begins April 16, 2018, and ends 
May 16, 2018.

ADDRESSES: The IRIS Assessment Plan for Ammonia and Ammonium Salts, 
will be available via the internet on IRIS' website at https://cfpub.epa.gov/ncea/iris2/chemicalLanding.cfm?substance_nmbr=422 and in 
the public docket at http://www.regulations.gov, Docket ID: EPA-HQ-ORD-
2018-0132.

FOR FURTHER INFORMATION CONTACT: For information on the public comment 
period, contact the ORD Docket at the EPA Headquarters Docket Center; 
telephone: 202-566-1752; facsimile: 202-566-9744; or email: 
[email protected].
    For technical information on the draft IRIS Assessment Plan for 
ammonia and ammonium salts, contact Dr. James Avery, NCEA; telephone: 
202-564-1494; or email: [email protected].

SUPPLEMENTARY INFORMATION: 

I. Background Information on IRIS Assessment Plans

    EPA's IRIS Program is a human health assessment program that 
evaluates quantitative and qualitative risk information on effects that 
may result from exposure to chemicals found in the environment. Through 
the IRIS Program, EPA provides the highest quality science-based human 
health assessments to support the Agency's regulatory activities and 
decisions to protect public health. As part of scoping and initial 
problem formulation activities prior to the development of a draft 
assessment, the IRIS Program carries out a broad, preliminary 
literature survey to assist in identifying health effects that have 
been studied in relation to the chemical or substance of interest, as 
well as science issues that may need to be considered when evaluating 
toxicity. This information, in conjunction with scoping needs 
identified by EPA program and regional offices, is used to inform the 
development of an IRIS Assessment Plan (IAP).
    The IAP communicates the plan for developing each individual 
chemical assessment to the public and includes summary information on 
the IRIS Program's scoping and initial problem formulation, objectives 
and specific aims for the assessment, and a PECO (Populations, 
Exposures, Comparators, and Outcomes) for the systematic review. The 
PECO provides the framework for developing literature search strategies 
and inclusion/exclusion criteria, particularly with respect to evidence 
stream (i.e., human, animal, mechanistic), exposure measures and 
outcome measures. The IAP serves to inform the subsequent development 
of chemical-specific systematic review protocols, which will be made 
publicly available.

II. Public Webinar

    In order to allow for public input, EPA is convening a public 
webinar to discuss the draft IRIS Assessment Plan for ammonia and 
ammonium salts on May 23, 2018. Specific teleconference and webinar 
information regarding this public meeting will be provided through the 
IRIS website (https://www.epa.gov/iris) and via EPA's Human Health Risk 
Assessment (HHRA) and IRIS listservs. To register for the HHRA or IRIS 
listserv, visit the IRIS website (https://www.epa.gov/iris) or visit 
https://www.epa.gov/iris/forms/staying-connected-integrated-risk-information-system#connect.

III. How To Submit Technical Comments to the Docket at http://www.regulations.gov

    Submit your comments, identified by Docket ID No. EPA-HQ-ORD-2018-
0132 for ammonia, by one of the following methods:
     www.regulations.gov: Follow the on-line instructions for 
submitting comments.
     Email: [email protected].
     Fax: 202-566-9744.
     Mail: U.S. Environmental Protection Agency, EPA Docket 
Center (ORD Docket), Mail Code: 28221T, 1200 Pennsylvania Avenue NW, 
Washington, DC 20460. The phone number is 202-566-1752.
     Hand Delivery: The ORD Docket is located in the EPA 
Headquarters Docket Center, EPA West Building, Room 3334, 1301 
Constitution Avenue NW, Washington, DC 20229.
    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. 
Deliveries are only accepted during the docket's normal hours of 
operation, and special arrangements should be made for deliveries of 
boxed information. If you provide comments by mail or hand delivery, 
please submit three copies of the comments. For attachments, provide an 
index, number pages consecutively with the comments, and submit an 
unbound original and three copies.
    Instructions: Direct your comments to docket number EPA-HQ-ORD-
2018-0132 for ammonia and ammonium salts. Please ensure that your 
comments are submitted within the specified comment period. Comments 
received after the closing date will be marked ``late,'' and may only 
be considered if time permits. It is EPA's policy to include all 
comments it receives in the public docket without change and to make 
the comments available online at www.regulations.gov, including any 
personal information provided, unless a comment includes information 
claimed to be Confidential Business Information (CBI) or other 
information for which disclosure is restricted by statute. Do not 
submit information through www.regulations.gov or email that you 
consider to be CBI or otherwise

[[Page 16357]]

protected. The www.regulations.gov website 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 
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, 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. For additional information about EPA's public docket visit the 
EPA Docket Center homepage at www.epa.gov/epahome/dockets.htm.
    Docket: 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 materials, 
such as copyrighted material, are publicly available only in hard copy. 
Publicly available docket materials are available either electronically 
in www.regulations.gov or in hard copy at the ORD Docket in the EPA 
Headquarters Docket Center.

    Dated: April 5, 2018.
Tina Bahadori,
Director, National Center for Environmental Assessment.
[FR Doc. 2018-07746 Filed 4-13-18; 8:45 am]
 BILLING CODE 6560-50-P


