City of Monessen, PA
Westmoreland County
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Table of Contents
Table of Contents
Any drain or conveyance, whether on the surface or subsurface, that allows any nonstormwater discharge, including sewage, process wastewater, and wash water, to enter a regulated small MS4 or to enter the waters of this commonwealth is prohibited.
No person shall allow, or cause to allow, discharges into a regulated small MS4, or discharges into waters of this commonwealth, which are not composed entirely of stormwater, except discharges allowed under a state or federal permit or as provided in Subsection E below.
No person shall throw, drain, or otherwise discharge, cause, or allow others under its control to throw, drain, or otherwise discharge into the MS4 any pollutants or waters containing any pollutants, other than stormwater.
The commencement, conduct or continuance of any illegal discharge to the storm drain system is prohibited.
The following discharges are authorized unless they are determined to be significant contributors to pollution of a regulated small MS4 or to the waters of this commonwealth:
Diverted stream flows.
Potable water sources, including water line flushing.
Irrigation drainage.
Air-conditioning condensate.
Water from crawl space pumps.
Pavement wash waters where spills or leaks of tozic or hazardous materials have not occurred (unless all spill material has been removed) and where detergents are not used.
Flows from riparian habitats and wetlands.
Uncontaminated water from foundations or from footing drains.
Lawn watering.
Dechlorinated swimming pool discharges.
Uncontaminated groundwater.
Water from individual residential car washing.
Routine external building wash down (which does not use detergents or other compounds).
Discharges or flow from firefighting, and other discharges specified in writing by the City as being necessary to protect public health and safety, are authorized.
Discharges associated with dye testing are authorized; however, this activity requires a verbal notification to the City prior to the time of the test.
The prohibition shall not apply to any nonstormwater discharge permitted under an NPDES permit, waiver, or waste discharge order issued to the discharger and administered under the authority of the EPA, provided that the discharger is in full compliance with all requirements of the permit, waiver, or order and other applicable laws and regulations, and provided that written approval has been granted for any discharge to the storm drain system.
In the event that the City determines that any of the discharges identified above significantly contribute pollutants to a regulated small MS4 or to the waters of this commonwealth, the City will notify the responsible person(s) to cease the discharge.
The construction, use, maintenance or continued existence of illicit connections to the storm drain system is prohibited.
This prohibition expressly includes, without limitation, illicit connections made in the past, regardless of whether the connection was permissible under law or practices applicable or prevailing at the time of connection.
A person is considered to be in violation of this chapter if the person connects a line conveying sewage to the MS4, or allows such a connection to continue.
Improper connections in violation of this chapter must be disconnected and redirected, if necessary, to an approved on-site wastewater management system or the sanitary sewer system upon approval of the City or the Mon Valley Sewage Authority.
Any drain or conveyance that has not been documented in plans, maps or equivalent, and which may be connected to the storm sewer system, shall be located by the owner or occupant of that property upon receipt of written notice of violation from the City requiring that such locating be completed. Such notice will specify a reasonable time period within which the location of the drain or conveyance is to be determined, that the drain or conveyance be identified as storm sewer, sanitary sewer or other, and that the outfall location or point of connection to the storm sewer system, sanitary sewer system or other discharge point be identified. Results of these investigations are to be documented and provided to the City.