National Pollutant Discharge Elimination System. Offeror. The person offering the proposal. PADEP. The Commonwealth of Pennsylvania, Department of Environmental Protection. PADEP Guidance Documents. PADEP documents that provide guidance for calculating sediment reduction and for developing MS4 PRPs and TMDL plans, along with any updates to them. To the extent that these documents conflict, the most recently published or updated document controls. Most of the PADEP Guidance Documents are available on PADEP’s eLibrary (xxx.xxxxxxxx.xxx.xxxxx.xx.xx) under – Permit and Authorization Packages – Clean Water – PAG-13 NPDES General Permit for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4s) and Individual NPDES Permit Application for MS4s. The following PADEP Guidance Documents are of particular importance to this Statement of Work: • PRP Instructions (Document 3800-PM-BCW0100k Rev. 3/2017) • TMDL Plan Instructions (Document 3800-PM-BCW0200d Rev. 3/2017) • BMP Effectiveness Values (Document 3800-PM-BCW0100m Rev. 6/2018) • Considerations of Stream Restoration Projects in Pennsylvania for eligibility as an MS4 Best Management Practice, May 11, 2018 (xxxxx.xxx.xxxxx.xx.xx/Xxxxx/XXXXXX/XxxxxxxxxxXxxxxxxxxx/Xxxxxxxxx Stormwater/PRP_TMDL_Plans/Stream%20Restoration%20Eligibility%20f or%20MS4%205.11.2018.pdf)
National Pollutant Discharge Elimination System. (NPDES) means a national permit program administered by the Environmental Protection Agency under authority granted in Public Law 92-500 and transferable to the State for all point source direct discharges into navigable waters. The NPDES permit sets limits and prescribes the conditions of the discharge.
National Pollutant Discharge Elimination System. Tenant shall comply with all federal and state regulations governing the National Pollutant Discharge Elimination System (NPDES) and applicable sections of Airport’s Storm Water Pollution Prevention Plan, including all future amendments of said regulations and procedures as may be adopted by federal, state or local agencies.
National Pollutant Discharge Elimination System. The CWA generally prohibits point source discharges of pollutants into waters of the United States without an NPDES permit. A point source is any discernible, confined and discrete conveyance, such as a pipe, ditch, channel, tunnel, conduit, discrete fissure or container. It also includes ves- sels or other floating craft from which pollutants are or may be discharged. By law, the term point source also includes concentrated animal feeding operations, which are places where animals are confined and fed. Significantly, Congress exempted agricultural stormwater discharges and return flows from irrigated agriculture from the definition of point sources, even when it is collected and discharged from a pipe, ditch or other discrete conveyance. Discharge of storm water from municipal separate storm sewer systems require an NPDES permit. Regulatory Authorities and Stakeholders The CWA’s NPDES Program recognizes three categories of pollutants: » Conventional pollutants include biological oxygen demand (BOD), total suspended solids (TSS), coliform, pH, and oil and grease. » Toxic pollutants are designated by EPA as those pollutants or combination of pollutants, including disease-causing agents, “which after discharge and upon exposure, ingestion, inhalation or assimilation into any organism, either directly from the environment or indirectly by ingestion through food chains” will “cause death, disease, behavioral abnor- malities, cancer, genetic mutations, physiological malfunctions (including malfunctions in reproduction) or physical deformations, in such organisms or their offspring.” Thus far, EPA has designated 65 categories of toxic pollutants under the CWA. » Nontoxic nonconventional include any pollutants not included in the first two categories but that still might pose a threat (e.g., ammonia and heat). NPDES permits include discharge limits and monitoring requirements. Discharge limits are based on technology and on WQS, and may be based on the mass of pollutant allowed to be discharged, the concentration of the pollutants in the effluent, indicator concentrations, effluent toxicity, efflu- ent flow rate or visual observations (e.g., sheen, foam, or floating solids). To find out if a discharge is covered by an NPDES permit, call the EPA Regional office or the state office responsible for issu- ing NPDES permits. A state must calculate a water quality-based limitation for a NPDES discharger where there is a reasonable potential that a discharger will cause...
National Pollutant Discharge Elimination System. A provision of the Clean Water Act which prohibits discharge of pollutants into waters of the United States unless a special permit is issued by EPA, a state, or, where delegated, a tribal government on an Indian reservation. In Washington State, the Department of Ecology is the permit authority. SEPA – State Environmental Policy Act A state policy that requires state and local agencies to consider the likely environmental consequences of a proposal before approving or denying the proposal. The SEPA Checklist is a series of questions that allow an agency to determine likely impacts of a project. Upon review of the checklist, an agency can issue a Determination of Non-significance (DNS); a mitigated Determination of Non-significance (MDNS); or a Determination of Significance (DS). A Determination of Significance will lead to an Environmental Impact Statement (EIS). SWPPP – Surface Water Pollution Prevention Plan
