1.Â
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 surface waters of this commonwealth is prohibited.
3.Â
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:
A.Â
Discharges or flows from firefighting
activities.
B.Â
Discharges from potable water
sources including water line flushing and fire hydrant flushing, if
such discharges do not contain detectable concentrations of total
residual chlorine (TRC).
C.Â
Noncontaminated irrigation water,
water from lawn maintenance, landscape drainage and flows from riparian
habitats and wetlands.
D.Â
Diverted stream flows and springs.
E.Â
Noncontaminated pumped groundwater
and water from foundation and footing drains and crawl-space pumps.
F.Â
Noncontaminated HVAC condensation
and water from geothermal systems.
G.Â
Residential (i.e., not commercial)
vehicle wash water where cleaning agents are not utilized.
H.Â
Noncontaminated hydrostatic
test water discharges, if such discharges do not contain detectable
concentrations of TRC.
I.Â
Dechlorinated swimming pool
and hot tub discharges, as long as the PADEP guidelines for swimming
pool water discharge are followed.
Roof drains and sump pumps shall discharge to infiltration or
vegetative BMPs wherever feasible.
No person shall modify, remove, fill, landscape, or alter any
SWM BMPs, facilities, areas, drainage easements, or structures that
were installed as a requirement of this chapter without the written
approval of the municipality.