§ 240-25Prohibited discharges.
§ 240-26Prohibited connections.
§ 240-27Roof drains.
§ 240-28Alteration of BMPs.
No person in the municipality shall allow, or cause to allow, stormwater discharges into the municipality's separate storm sewer system which are not composed entirely of stormwater, except as provided in Subsection B below and discharges allowed under a state or federal permit.
Discharges which may be allowed, based on a finding by the municipality that the discharge(s) do not significantly contribute to pollution to surface waters of the commonwealth, are:
Discharges from fire-fighting activities;
Uncontaminated water from foundation or from footing drains;
Potable water sources, including dechlorinated water line and fire hydrant flushings;
Flows from riparian habitats and wetlands;
Pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred (unless all spill material has been removed) and where detergents are not used;
Routine external building washdown (which does not use detergents or other compounds);
Water from individual residential car washing;
Dechlorinated swimming pool discharges;
Springs uncontaminated groundwater;
Water from crawl space pumps.
In the event that the municipality determines that any of the discharges identified in Subsection B significantly contribute to pollution of waters of the commonwealth, or is so notified by DEP, the municipality will notify the responsible person to cease the discharge.
Upon notice provided by the municipality under Subsection C, the discharger will have a reasonable time, as determined by the municipality, to cease the discharge consistent with the degree of pollution caused by the discharge.
Nothing in this section shall affect a discharger's responsibilities under state law.
The following connections are prohibited, except as provided in § 240-25B above:
Any drain or conveyance, whether on the surface or subsurface, which allows any nonstormwater discharge, including sewage, process wastewater, and wash water, to enter the separate storm sewer system, and any connections to the storm drain system from indoor drains and sinks; and
Any drain or conveyance connected from a commercial or industrial land use to the separate storm sewer system which has not been documented in plans, maps, or equivalent records, and approved by the municipality.
Roof drains shall not be connected to streets, sanitary or storm sewers or roadside ditches, except as provided in § 240-27B.
When it is more advantageous to connect directly to streets or storm sewers, connections of roof drains to streets or roadside ditches may be permitted by the municipality.
Roof drains shall discharge to infiltration areas or vegetative BMPs to the maximum extent practicable.
No person shall modify, remove, fill, landscape or alter any existing stormwater BMP, unless it is part of an approved maintenance program, without the written approval of the municipality.
No person shall place any structure, fill, landscaping or vegetation into a stormwater BMP or within a drainage easement, which would limit or alter the functioning of the BMP, without the written approval of the municipality.