§ 13.63.130. Non-stormwater, illegal discharges and dumping prohibited.

A.

Except as provided in subsections B. and C. below, no person shall throw, drain or otherwise discharge, cause or allow others under it's control to throw, drain or otherwise discharge into the stormwater system any materials other than stormwater.

B.

The following discharges into the stormwater system are prohibited, unless the stated conditions are met:

1.

Discharges from potable water sources, including waterline flushing, hyperchlorinated waterline flushing, fire hydrant system flushing and pipeline hydrostatic test water. Planned discharges shall be dechlorinated to a concentration of 0.1 ppm or less, pH adjusted, if necessary (to meet water quality standards), and volumetrically and velocity controlled to prevent resuspension of sediments in the MS4.

2.

Discharges from lawn watering and other irrigation runoff shall be minimized.

3.

Dechlorinated swimming pool, spa and hot tub discharges. The discharges shall be dechlorinated to a concentration of 0.1 ppm or less, pH adjusted and re-oxygenized, if necessary, and volumetrically and velocity controlled to prevent resuspension of sediments in the MS4 and the property owner has obtained a stormwater discharge permit from the City. Discharges shall be thermally controlled to prevent an increase in temperature of the receiving water. Swimming pool cleaning wastewater and filter backwash shall not be discharged to the MS4.

4.

Street and sidewalk wash water, water used to control dust, and routine external building wash down that does not use detergents. To avoid washing pollutants into the MS4, permittee must minimize the amount of street wash and dust control water used. At active construction sites, street sweeping must be performed prior to washing the street.

5.

Other non-stormwater discharges. The discharges shall be in compliance with the requirements of the stormwater pollution prevention plan reviewed by the City, which addresses such discharges.

6.

Any discharges from a construction site. Discharges must be in conformance with the stormwater pollution prevention plan (SWPPP) reviewed by the permittee.

7.

Combined sewer overflow (CSO) discharges. This discharge must be in conformance with a current National Pollution Discharge Elimination System Permit, approved by the Washington State Department of Ecology.

C.

The following categories of non-stormwater discharges are specifically allowed:

1.

Diverted stream flows.

2.

Rising groundwaters.

3.

Uncontaminated groundwater infiltration (as defined at 40 CFR 35 2005(20)).

4.

Uncontaminated pumped groundwater.

5.

Foundation drains.

6.

Air conditioning condensation.

7.

Irrigation water from agricultural sources that is commingled with urban stormwater.

8.

Springs.

9.

Uncontaminated water from crawl space pumps.

10.

Footing drains.

11.

Flows from riparian habitats and wetlands.

12.

Non-stormwater discharges covered by another NPDES or State waste discharge permit.

13.

Discharges from emergency firefighting activities in accordance with the City of Port Angeles' Stormwater NPDES Permit Section S2 Authorized Discharges. The City's Stormwater NPDES Permit is available to view in the office of the City Engineer.

(Ord. 3568 § 1, 12/20/2016; Ord. 3367 § 2, 8/15/2009)