The General Permit for Discharges from Seafood Processing Facilities covers wastewater from seafood processing operations including crabs, oysters and fish; auxiliary discharges limited to non-contact cooling water, ice machine drainage, steam or cooling coil condensate and inside crab shedding tray overflow; and storm water runoff associated with seafood processing facilities. Part I of the permit provide the specific types of discharges and industries. Part II contains the application process, and the following Parts of the permit contain the required controls, monitoring and reporting. To review the permit you may find it at this link.
In signing the NOI, paying the fee and providing the required plans you are certifying you will abide by the requirements of that permit.

The general permits for wastewater discharge increase the efficiency of the Department’s permitting process through the issuance of generic permits to categories of business activities which are generally very similar in their wastewater characteristics. This permit covers discharges of storm water runoff and ground water seepage to surface waters from surface coal mines, including active mining areas, access roads, coal reclamation areas and associated coal storage and loading areas (tipples). This permit also covers storm water from independent tipples and coal preparation plants.

The general permits for wastewater discharge increase the efficiency of the Department’s permitting process through the issuance of generic permits to categories of business activities which are generally very similar in their wastewater characteristics. This permit covers discharges to surface or ground waters of overflow, drainage (drawdown), filter backwash, and cleaning water from any public or private pool or spa including baptismal fonts.

The general permits for wastewater discharge increase the efficiency of the Department’s permitting process through the issuance of generic permits to categories of business activities which are generally very similar in their wastewater characteristics.
This permit covers the following discharges:

• treated tank bottom wastewater from petroleum storage tanks to surface waters
• wastewater from the disinfection or hydrostatic testing of pipes, pipelines or tanks
• wastewater from draining or flushing of fire control systems
• discharges from potable water systems resulting from the overflow, flushing, disinfection, hydrostatic testing, mechanical cleaning, or dewaters in of vessels or structure used to store or convey potable water
• untreated "water" in excess of 10,000 gallons per day as a monthly average from water storage or distribution systems and
• storm water discharges from petroleum storage tank containment structures
• Dewatering from construction activities
• Groundwater remediation

This General Permit covers operators located in Maryland involved in the application of a pesticide that results in an eligible discharge to waters of this state. Refer to Part I of the permit to determine if you need to apply for coverage. Eligible discharges include application of (1) biological pesticides or (2) chemical pesticides that leave a residue, when the pesticide application is for one of the following pesticide use patterns: Mosquito & Other Flying Insect Pest Control; Weed, Algae, and Pathogen Control; Nuisance Animal Control; and Forest Canopy Pest Control. To review the permit you may find it at this link.
In signing the NOI and the DOI (Declaration of Intent), and providing the required plans you are certifying you will abide by the requirements of that permit.

The General Permit for Stormwater Associated with Industrial Activities cover a variety of industrial activities and discharges. Part I of the permit provide the specific types of discharges and industries. Part II contains the application process, and the following Parts of the permit contain the required controls, monitoring and reporting. To review the permit you may find it at this link.

The general permits for wastewater discharge increase the efficiency of the Department’s permitting process through the issuance of generic permits to categories of business activities which are generally very similar in their wastewater characteristics. This proposed General Permit is for the discharge of compost toilet liquid (wastewater) from composting toilets to groundwater - via land application. This includes compost toilet liquids from private dwellings and other types of facilities that use composting toilet technology. Maryland environmental regulations require a permit for the discharge of any quantity of wastewater to ground and surface waters, and includes wastewater discharged by land application. Land application means that the wastewater is discharged directly onto vegetated ground and is considered a beneficial reuse of the wastewater.

The general permits for wastewater discharge increase the efficiency of the Department’s permitting process through the issuance of generic permits to categories of business activities which are generally very similar in their wastewater characteristics. This permit is for the discharge of exterior vehicle washwater operations including automobiles, trucks, buses, grounds maintenance equipment, construction equipment, railcars, golf carts, all-terrain vehicles, motorcycles, watercraft and aircraft, to groundwater. This general permit regulates the most common pollutants of concern that may be discharged in exterior vehicle washwater. The permit controls the discharge of these pollutants directly by required chemical testing of the washwater and indirectly by operation and maintenance conditions. The chemical tests and operation and maintenance requirements that are required in the General Permit are essentially the same as in an individual permit.

This general permit covers all new and existing discharges of stormwater from storage tank dike ( (i.e. secondary containment dikes) and loading rack areas and hydrostatic test water from oil terminalsto to surface water or groundwaters of Maryland.

This general permit covers all new and existing discharges of treated ground water from oil-contaminated ground water sources which discharge to surface or ground waters of Maryland.