United States      Prevention, Pesticides     EPA712-C-96-283
         Environmental Protection    and Toxic Substances     February 1996
         Agency        (7101)
&EPA   Occupational and
         Residential Exposure
         Test Guidelines
         OPPTS 875.2800
         Descriptions of Human
         Activity

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                           INTRODUCTION
     This  guideline is  one of a series of test guidelines that have been
developed by the Office  of Prevention, Pesticides and Toxic Substances,
United States Environmental  Protection Agency for use in the testing of
pesticides and toxic substances, and the development of test data that must
be submitted to the Agency for review under Federal regulations.

     The Office of Prevention, Pesticides and Toxic Substances (OPPTS)
has  developed  this guideline through a process of harmonization that
blended the testing  guidance  and requirements that  existed in the  Office
of Pollution Prevention  and  Toxics (OPPT) and appeared in  Title 40,
Chapter I,  Subchapter  R of the Code of Federal Regulations (CFR), the
Office of Pesticide Programs (OPP) which appeared  in publications of the
National Technical  Information Service (NTIS) and the guidelines pub-
lished by  the Organization for Economic Cooperation and Development
(OECD).

     The purpose of harmonizing these  guidelines  into a single  set of
OPPTS guidelines is to minimize  variations among the testing procedures
that must be performed to meet the data requirements of the U. S. Environ-
mental Protection Agency under  the  Toxic Substances  Control  Act (15
U.S.C. 2601) and the Federal Insecticide, Fungicide and Rodenticide Act
(7U.S.C.  I36,etseq.).

     This  guideline, along with the others in  Series 875.2000  through
875.2900, is being substantially revised for publication in 1997. However,
the current guidelines  are  still official. Before  initiating any studies for
post-application exposure registrants should contact EPA's Occupational
and Residential Exposure Branch (within the Office of Pesticide Programs)
at 703-305-6094.

     Final Guideline Release: This guideline is available from the U.S.
Government Printing Office, Washington, DC 20402 on The Federal Bul-
letin   Board.   By  modem   dial  202-512-1387,  telnet   and  ftp:
fedbbs.access.gpo.gov     (IP     162.140.64.19),     internet:     http://
fedbbs.access.gpo.gov,  or call 202-512-0132 for disks  or paper copies.
This guideline is also available electronically in ASCII and PDF (portable
document format) from the EPA  Public Access Gopher (gopher.epa.gov)
under the heading "Environmental Test Methods and Guidelines."

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OPPTS 875.2800   Descriptions of human activity.
     (a) Scope—(1) Applicability. This guideline is intended to meet test-
ing requirements of the Federal Insecticide, Fungicide, and Rodenticide
Act (FIFRA) (7 U.S.C. 136, et seq.}.

     (2) Background. The source material used in developing this har-
monized OPPTS test guideline is OPP guideline  133-1.  This guideline
should be used with OPPTS 875.2000 and 875.2900.

     (b) Purpose. The purpose of this guideline is to delineate the require-
ments for developing and submitting  descriptions of human activities likely
to occur at a site that has been treated with a specific pesticide.

     (c) Description of activities. Each brief description should include,
but not necessarily be limited to:

     (1) Nature of human activity (e.g. harvesting, thinning, scouting, etc.).

     (2) Principal source(s) of exposure (e.g. foliage, soil, air, etc.).

     (3) Usual environmental conditions for activity (e.g. hot, humid, cool,
dry, wet, etc.).

     (4) Level of physical exertion (e.g. mild, moderate, heavy).

     (5) Expected frequency and duration of activity (e.g. number of times
per day or per week, number of hours per day, etc.).

     (d) Designation of maximum exposure activity. In connection with
the submittal of descriptions of human activities, the applicant should state
which  activity is the most like to result in maximum human exposure to
pesticide residues for each site. In some pesticide use situations, the most
significant human exposure to pesticide residues occurs when harvested
commodities are transferred  from the application  site  and handled  (e.g.
sorting of fruits or vegetables). The applicant should include a brief ration-
ale supporting his  selection. The activity selected will represent the maxi-
mum expected  exposure activity for that  specific  use, and may  be em-
ployed as the  exposure standard for future  calculations under  OPPTS
875.2900 if that guideline is used for calculating a reentry interval.

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