Field staff are generally assigned by county.  Please refer to the following staff maps for contact information.

• Biosolids staff are involved in the permitting and use of biosolids, which are nutrient-rich organic material from treated domestic sewage.
• CAFO staff are involved in permitting to protect water quality at Concentrated Animal Feeding Operations and where manure is land applied.
• CSO/SSO/RTB staff are involved in eliminating Sanitary Sewer Overflows and regulating discharges from Combined Sewer Overflows and Retention Treatment Basins.
• Dam Safety staff are involved in inspecting and regulating the operation of dams.
• Dunes\Great Lakes Coast staff are involved in Great Lakes shoreland permits, including high risk erosion areas (HREA) and critical dunes (CDA).
• Floodplain staff are involved in identifying floodplains, permitting the activities within the floodplain, and assisting communities in administering the National Floodplain Insurance Program.
• Groundwater Discharge staff are involved in regulating the discharge of treated wastewater to the ground or groundwaters of the state. 
• Industrial Pretreatment (IPP) staff are involved in regulating the discharge of industrial wastewater to protect treatment facilities, their staff, the public, and the environment.
• IPP PFAS staff are involved in identifying potential sources of PFAS, sample probable sources, and require source reduction at confirmed sources.
• Industrial Stormwater (ISW) staff are involved in permitting industrial stormwater facilities, certifying facility operators, and reviewing StormWater Pollution Prevention Plans (SWPPP).
• ISW Emerging Pollutants staff are involved in identifying potential sources of emerging pollutants in industrial stormwater and sampling probable sources.
• Land/Water Permits staff are involved in permitting projects at the land/water interface - shorelines, wetlands, etc.
• Municipal Stormwater (MS4) staff are involved in permitting discharges from Municipal Separate Storm Sewer Systems (MS4).
• Nonpoint Source (NPS) staff provide technical assistance and grants to restore waters impaired by NPS pollution and protect high quality waters from NPS threats.
• NPDES (Surface Water) Discharge staff are involved in the National Pollutant Discharge Elimination System permit process to control the discharge of pollutants into surface waters by effluent limitations.
• Part 41 Wastewater staff are involved in the permitting the construction and operation of wastewater facilities.
• PIPP and Part 5 Rules staff are involved in the management or spillage of oil and other polluting materials under Part 5.
• Resource Program Compliance Coordinators are involved in seeking to resolve violations at the land/water interface – shorelines, wetlands, critical dunes, etc.
• SESC & Construction Stormwater staff are involved in permitting and control of soil erosion to protect adjacent properties and surface waters from sedimentation.
• Transportation Hydraulics staff are involved in environmental and hydraulic review of proposed new or replacement bridges, culverts, and road projects for Public Transportation Agencies and public airports.
• Transportation Permits staff are involved in permitting at the land/water interface for public road projects including new or replacement bridges, culverts, and road widening, as well as permitting for public airport projects.