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In the past the AMCA has been heavily involved in providing information and data to the EPA in order to keep the Agency fully cognizant of the unique nature of mosquito management operations in their regulatory decisions. As you are well aware, the EPA and a number of stakeholders are currently developing the draft National Pollutant Discharge Elimination System (NPDES) general permit and are seeking validated larvicide/adulticide deposition data in treated water columns. This will assist them in their deliberations regarding monitoring of water quality in accordance with the Clean Water Act permitting scheme. Absent our input, they will be forced to utilize modeling assumptions that are notoriously unrealistic. Thus, it is imperative that our profession, as the acknowledged experts, assist them in obtaining realistic, reliable data to serve as a basis for an informed permitting scheme if eventually required. To this end, we ask that our industry/academic/operational colleagues scan their data banks to identify any publications or research on water deposition that we could forward to the working group that is developing the draft permit. As the draft permit is due for promulgation in late April, the sooner we compile this data and get it in their hands for review and action, the better. Should you have access or know of relevant data sets or studies, please forward them as soon as possible to David Brown, the POC in this matter, at dabrown@sac-yolomvcd.com. Thank you.