To Public Agencies:
NOTICE OF INTENT TO APPLY PESTICIDES FOR AQUATIC WEED CONTROL
PURPOSES TO SURFACE WATERS AND WATERS OF THE UNITED STATES
WITHIN THE FRESNO METROPOLITAN FLOOD CONTROL DISTRICT
The Fresno Metropolitan Flood Control District (District) is a flood control and stormwater
management agency that builds, operates and maintains stormwater basins, waterways, dams and
associated facilities within its borders.
The District is required and has obtained a Statewide General National Pollutant Discharge
Elimination System (NPDES) permit to apply aquatic pesticides in, over and near waters of the
United States. The District will apply pesticides between January 1, 2021 and December 31, 2021
within District boundaries; in and adjacent to channels of the Fresno Stream Group and other
waterways under the jurisdiction of the District.
The NPDES permit requires that we notify potentially affected government agencies about the
application of aquatic pesticides each calendar year. This is the notification letter advising you
that aquatic pesticides will be used to control weeds within District boundaries this year.
The District may apply the following pesticides:
Triclopyr, Glyphosate, Nonylphenol (ingredient in adjuvant), Imazamox and Imazapyr. These
pesticides are registered for use by the California Environmental Protection Agency (Cal EPA)
and the United States Environmental Protection Agency (EPA).
These pesticides are used to improve public safety by controlling aquatic weeds in waterways and
ponding basins managed by the District. Aquatic weed build up can obstruct water flows through
our facilities, increasing the chance of localized flooding and/or damage to structures and
equipment. There are no known water use restrictions or precautions during treatment.
Interested persons may contact Paige Moretto, Staff Analyst, at (559) 456-3292 for additional
Very truly yours,