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Municipal Guide To Clean Water: Conducting Sanitary Surveys to Improve Coastal Water Quality

Groundwater Seep: Percolation of water through the soil from a source under the ground (does not include the drain- age of water from the surface of a tidal marsh at low tide).

Marina: A basin containing docks, slips, and boating supplies (fuel, repair equipment, waste pump-out capabilities) used for docking or storing vessels. Constructed to provide temporary or permanent docking space for more than 10 boats.

Mooring Field: An area of water (usually outside of the marina proper) containing buoys or floating docks anchored to the seabed for boats to tie up to. Constructed to provide temporary or permanent docking space for more than 10 boats.

Pump Station: A facility installed in a sewer or water collection system to pump sewage through a forced main to a higher elevation and/or treatment facility.

NPDES Outfall: The place where effluent is discharged into receiving waters from a facility with a National Pollutant Discharge Elimination System permit, e.g., wastewater treatment facility outfall pipe.

NPDES Facility: The actual building(s) where waste, to be released through the NPDES outfall pipes, is generated and stored.

Road Swale: A low, wet piece of land used to channel stormwater runoff from a road surface. Typically runs parallel to the road.

Road Culvert: A human-made conduit (box-shaped or round), used to convey water under a road.

Salt Marsh Ditch: A long, human-made, narrow channel in a salt marsh designed to facilitate draining. Typically three feet wide or less and 1-2 feet deep.

Sewer Line: A human-made conduit used to transport sewage and refuse. Consists of either gravity lines or forced mains.

Tidal Creek: A small stream influenced primarily by tidal waters. Typically found in salt marshes, concentrating the drainage of the marsh during low tide. Typically 4-10 ft in width and 3-6 ft in depth.

Tidal River: A moderate to large river influenced primarily by tidal waters. Typically greater than 10 ft in width and greater than 6 ft in depth.

Holding Tank (HT): Holding tanks are designed to receive and hold the wastewater leaving a domestic structure. This wastewater, in turn, is pumped out and transported to a municipal treatment plant or to an approved land-spreading site. Every holding tank shall be pumped at least once a year, providing the system has been used [Title 22 M.R.S.A. §22 Chap- ter 20 (2000.3.1). The owner, or agent for the owner, of a holding tank shall retain for a period of three years the copies of the pumping records, water-use records (if required) and the current agreement between the owner and tank pumper. A copy of these records shall be made available to the plumbing inspector upon his/her request. [Title 22 M.R.S.A. §22 Chapter 20 (2000.3.4). The holding tank shall have visual and audible alarm devices to assure the tank is always pumped before it is full [Title 22 M.R.S.A. §22 Chapter 20 (2000.3.8)].

Pit Privy or Outhouse: Pit privies are intended to receive and store human wastes in excavations below toilets. A pit privy is considered a “disposal field” for the purpose of setback distances, except for the distance requirements from a building. Pit privies may be part of a larger building [Title 22 M.R.S.A. §22 Chapter 20 (706.1).

Investigated/Clean: Any pollution source, actual or potential, that has been investigated, by means of bacterial sam- pling, and found to be at levels which are below NSSP bacteriological standards. For beaches and other areas these are sources that contribute to bacteria levels below the EPA-approved standards for recreational water contact.

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