Monday, February 22, 2010

Electronic and Electrical Equipment Manufacturing Sector - MN Permit

The Minnesota Pollution Control Agency (MPCA) has issued its revised multi-sector industrial stormwater discharge general permit (MSGP). This permit will replace the existing industrial stormwater permit, which expired in October of 2002. [Read a summary of the overall Minnesota permit, stormwater monitoring, and sector requirements] All manufacturing, industrial and “industrial-like” sites that require a permit to discharge stormwater will be required to come into compliance with the revised permit, and to submit an application for permit coverage between June and October 2010, depending on their industrial sector. Click here to review a list affected industrial sectors and application deadlines for each sector The revised permit details requirements for 29 different industrial sectors. The requirements described below are for the Electronic and Electrical Equipment and Components Manufacturing Sector (Sector AC). Sector AC facilities are engaged in a range of product manufacturing, including a. measuring, analyzing, and controlling instruments, photographic and optical goods, watches and clocks; computer and office equipment; and electronic and electrical equipment and components. These requirements are in addition to permit requirements that apply to all sectors. Review requirements that apply to all sectors Inspections: In addition to routine inspection requirements, the operation must conduct two of the monthly inspections during runoff events. One of the inspections must be performed during a snow melt runoff event. Each inspection must include a visual assessment of the runoff to identify any visible sheens or films that indicate the presence of oil or grease in the discharge. Stormwater Monitoring Benchmarks: All facilities are required to conduct visual and chemical (benchmark) monitoring. For benchmark monitoring, the benchmark concentrations or values depend on product type: Electronic, Electrical, Photographic, and Optical Goods (SIC 3571-3579, 3812-3873): TSS 100 mg/L Electronic and Electrical Equipment and Components, except Computers (SIC 3612-3699): TSS 100 mg/L Total Copper 0.028 mg/L Total Lead 0.164 mg/L Note: Benchmarks for zinc and iron were derived based on the Aquatic Life Standards for these parameters in Minnesota Rules. [Read more about use of Aquatic Life Standards to derive stormwater benchmarks] [Read more about how benchmarks are used under the revised MPCA industrial permit] [Read more about what a 100 mg/L benchmark for TSS relates to] Looking for other sector information? Click here for a link to all sector requirements

Caltha LLP provides expert consulting services to public and private sector clients in Minnesota to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training. For further information contact Caltha LLP at or Caltha LLP Website

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