South Dakota General Permit For Temporary Waste Water Discharge

The South Dakota Department of Environment & Natural Resources (SDDENR) has released its draft general NPDES permit to cover certain types of infrequent or on-time discharges of wastewater and/or stormwater. Under Federal Clean Water Act rules, these types of discharges can not occur unless covered under an NPDES permit. The types of discharges which would be allowed under the South Dakota permit, once finalized, include:

Construction dewatering,
Pump testing of water wells,
Discharges from swimming pools and similar structures,
Discharges of petroleum contaminated ground water from remediation sites,
Other types of short-term discharges meeting specific criteria.

In order to be covered under the general permit, dischargers will need to submit an application to the SDDENR.

The draft NPDES general permit specifies effluent limits and monitoring that must be conducted during the discharge. It also outlines specific Best Management Practices (BMP) that should be followed before, during and after the discharge occurs.

The draft general permit was placed on 30-day public comment, and will be finalized and available for use after comments are received and the permit modified, if necessary.

Caltha LLP provides expert consulting services to public and private sector clients in South Dakota and nationwide to address water quality standards, wastewater permitting and assessing potential impacts of chemicals in the aquatic environment.

Caltha LLP Aquatic Toxicology / WQ Standards Services Website

South Dakota General NPDES Permit For Pesticide Discharges

The South Dakota Department of Environment and Natural Resources (DENR) has released its draft surface water discharge permit for pesticide applicators. Discharges to waters of the state from the application of either chemical or biological pesticides that leave a residue or are not otherwise excluded from coverage under the federal Clean Water Act will require a permit.

The draft General Permit was prepared for the five pesticide use categories:

Mosquito and Other Flying Insect Pest Control. This use category includes the control of public health/nuisance and other flying insect pests that develop or are present during a portion of their life cycle in or above standing or flowing water.

Weed and Algae Control. This use category includes the control of invasive or other nuisance weeds and algae in water and at water’s edge, including irrigation ditches and/or irrigation canals.

Aerial Pest Control. This use category is for the aerial application of a pesticide to control the population of a pest (e.g., insect or pathogen) where, to target the pests effectively, a portion of pesticide will be unavoidably discharged into waters of the state. These pests are not necessarily aquatic, but are detrimental to industry, the environment, and public health.

Ditch and Stream Bank Pest Control. This use category includes the management of a diverse pest spectrum where pesticides are deposited into a ditch or along stream banks to target the pests effectively and may result in a discharge to waters of the state.

Declared Pest Emergency Situation. This use category is for discharges associated with a declared pest emergency discharge.

Discharges not eligible for coverage under the draft General Permit include discharges to waters of the state identified in the 303(d) list or Integrated Report as impaired for that pesticide or its degrades, and discharges associated with the management of invasive or other nuisance pests in water, including fish, lampreys, and mollusks. An individual permit or alternative general permit would be required for those discharges.

In contrast to many State general permits, under this draft permit, an application for permit coverage is not required. All pesticide activities requiring coverage under the permit will automatically have coverage upon the effective date of the permit.

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address water quality standards, wastewater permitting and assessing potential impacts of chemicals in the aquatic environment.

Caltha LLP Aquatic Toxicology / WQ Standards Services Website

Water Quality Standards - South Dakota SDDENR Proposed Revisions

The South Dakota Department of Environment & Natural Resources (DENR) has proposed revisions to the State water quality standards.

Link to proposed SDDENR water standards

Many of the revisions being proposed relate to the application of dissolved oxygen (DO) standards to lakes and rivers in the State.

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address water quality standards, wastewater permitting and assessing potential impacts of chemicals in the aquatic environment.

Caltha LLP Aquatic Toxicology / WQ Standards Services Website