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imazapyr, isopropylamine salt
NYS DEC Letter - Application to Register Habitat Release Herbicide 8/00

New York State Department of Environmental Conservation 
Division of Solid and Hazardous Materials
Bureau of Pesticides Management, Room 498 
Pesticide Product Registration Section
50 Wolf Road, Albany, New York 12233-7257 
Phone: (518) 457-7446 - FAX: (518) 485-8990 

August 18, 2000


Ms. Michaeleen E. Linahan 
State Registration Manager 
BASF Corporation
P.O. Box 400
Princeton, NJ 08543-0400

Dear Ms. Linahan:

Re:  Application to Register HABITAT® Release Herbicide (EPA Reg. No. 241-401) Containing 
     the Active Ingredient Isopropylamine Salt of Imazapyr

The Department has completed review of your response to the request for additional data to 
support registration of the subject product. HABITAT' Release Herbicide (EPA Reg. No. 241-401) 
contains the active ingredient isopropylamine salt of imazapyr 
(2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-lH-imidazol-2-yl]-3-pyridinecarboxylic acid).

The proposal to register a product bearing uses in intermittently flooded forestry sites and 
marshes, swamps, and bogs after water has receded represented a major change in labeled (MCL) 
use pattern for isopropylamine salt of imazapyr. Additional data was
required to assess the potential impacts of to nontarget organisms and the environment 
resulting from these use patterns.

American Cyanamid Company (now known as BASF Corporation) modified the HABITAT' federal label 
via notification (05/05/00) to the United States Environmental Protection Agency regarding 
addition of New York as another state in which applications to occasionally wet forested 
area is not allowed. The addition of the underlined text to the following "General Information" 
statement removes HABITAT' from the scope of a MCL in New York State:

HABITAT Release herbicide may be applied in forestry sites (land managed for timber production) 
on areas defined as puddles, potholes, berms of ditches, drainage ditches, intermittent 
drainage, intermittently flooded low lying sites, seasonally dry flood plains, and 
transitional areas between upland and lowland sites except in the states of California and 
New York. It is permissible to treat marshes, swamps, and bogs after water has receded, as 
well as seasonally dry flood deltas except in the states of California and New York.

Enclosed for your records is the Certificate of Pesticide Registration and New York 
stamped "Accepted" label. You must submit three (3) copies of final printed labeling 
prior to sale, offer for sale, distribution or use of product in New York State. 

Please note that, a proposal by BASF Corporation or any other registrant, to register a 
product containing imazapyr or any of its salts, whose labeled uses are likely to increase 
the potential for significant impact to humans, property, or the environment, would 
constitute a major change in labeled (MCL) use pattern. Such an application must be accompanied 
by a new application fee and meet the requirements listed in Appendix 1.B. of "New York State 
Pesticide Product Registration Procedures" (August 1996).

If you have any questions on this matter, please contact Michael Radzevich, of my 
staff, at (518) 457-7446.


Francis X. Hegener 
Pesticide Product Registration Section