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Techno Bits/Technical Bulletins WATER AND WASTEWATER - ARCHIVED Reminder: Annual Compliance Testing For Photo Processors Facilities that hold a Massachusetts Water Resources Authority (MWRA) Group Permit for Photo Processing and Printing Operations (Group Permit) must collect and analyze wastewater samples for silver to confirm their silver recovery equipment is operating effectively. These samples must be collected by December 31 of the calendar year and the analytical results must be reported to MWRA in the annual Group Permit Compliance Report, typically due to the MWRA on March 31 of the following calendar year.
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