24.06.125 Prohibited, permissible, and conditional discharges

24.06.125 Prohibited, permissible, and conditional discharges.

1. No person, whether singly or in combination with others, shall dump, throw, drain or otherwise discharge, either directly or indirectly, nonstormwater and/or prohibited discharges into the storm and surface water system or receiving water within or contiguous to city of Bellevue municipal limits; and

2. Every permit issued to implement this code shall contain a performance standard requiring that no discharge of nonstormwater and/or prohibited discharges from a site or real property, directly or indirectly, to the storm and surface water system or a receiving water occurs.

1. The following substances are prohibited from entering, either directly or indirectly, a storm and surface water system or receiving water within or contiguous to city of Bellevue municipal limits, including but not limited to:

1	Petroleum products including but not limited to oil, gasoline, grease, fuel oil and heating oil;
2	Trash or debris;
3	Domestic animal wastes;
4	Chemicals;
5	Paints;
6	Steam cleaning wastes;
7	Washing of fresh concrete for cleaning and/or finishing purposes or to expose aggregates;
8	Laundry wastes;
9	Soaps, including biodegradable soaps, detergents, or ammonia;
10	Pesticides, herbicides, or fertilizers;
11	Sewage;
12	Heated water;
13	Chlorinated water, chlorine, bromine, or other disinfectants;
14	Degreasers and/or solvents;
15	Bark and other fibrous material;
16	Antifreeze or other automotive products;
17	Lawn clippings, leaves, or branches;
18	Animal carcasses;
19	Silt or sediment;
20	Concrete, cement or gravel;
21	Acids, alkalis, or bases;
22	Recreational vehicle wastes;
23	Dyes (without prior permission of the utility);
24	Construction materials;
25	Food wastes;
26	Metals in either particulate or dissolved form;
27	Flammable or explosive materials;
28	Radioactive material;
29	Batteries;
30	Paints, stains, resins, lacquers, or varnishes;
31	Drain cleaners;
32	Swimming pool or spa filter backwash;
33	Chemicals not normally found in uncontaminated water;
34	Any other process-associated discharges except as otherwise allowed in this section;
35	Any hazardous material or waste not listed above.

C. Permissible Discharges. The following types of discharges are permissible discharges unless the director determines that the type of discharge, directly or indirectly, to a storm and surface water system or receiving water within or contiguous to city of Bellevue city limits, whether singly or in combination with others, is causing or contributing to a violation of the city’s NPDES permit or is causing or contributing to a water quality problem:

1	Diverted stream flows;
2	Rising ground waters;
3	Uncontaminated ground water infiltration;
4	Uncontaminated pumped ground water;
5	Foundation drains;
6	Air conditioning condensation;
7	Irrigation water from agricultural sources that is commingled with urban stormwater;
8	Springs;
9	Water from crawl space pumps;
10	Footing drains;
11	Flows from streams and associated buffers and wetlands;
12	Nonstormwater discharges covered by another NPDES permit; provided, that the discharge 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 by the Washington State Department of Ecology for any discharge to the storm drain system; and
13	Discharges from emergency fire fighting activities.

D. Conditionally Permissible Discharges. The following types of discharges are conditionally permissible discharges if they meet the stated conditions or unless the director determines that the type of discharge, directly or indirectly, to a storm and surface water system or a receiving water within or contiguous to Bellevue city limits, whether singly or in combination with others, is causing or contributing to a violation of the city’s NPDES permit or is causing or contributing to a water quality problem:

1. Potable water, including water from water line flushing, fire sprinkler system testing, hyperchlorinated water line flushing, fire hydrant system flushing, and pipeline hydrostatic test water. Such planned discharges shall be dechlorinated to a concentration of 0.1 ppm or less, pH-adjusted, if necessary, and in volumes and velocities controlled to prevent resuspension of sediments in the storm and surface water system;

2. Lawn watering and other irrigation runoff, which shall be minimized through, at a minimum, public education activities and water conservation efforts;

3. Dechlorinated swimming pool discharges, which shall be dechlorinated to a concentration of 0.1 ppm or less, pH-adjusted and reoxygenized, if necessary, and in volumes and velocities controlled to prevent resuspension of sediments in the storm and surface water system. Swimming pool cleaning wastewater and filter backwash shall not be discharged into the storm and surface water system;

4. Street, parking areas and sidewalk wash water, water used to control dust, and routine external building wash down that does not use detergents are permitted if the amount of street wash and dust control water used is minimized, best management practices are used to prevent and/or minimize dirt, soil, or other pollutants from entering the storm and surface water system, and public education activities and/or water conservation efforts include information on reducing impacts of these discharges. At active construction sites, street sweeping shall be performed prior to washing the street;

5. Nonstormwater discharges covered by another NPDES permit; provided, that the discharge 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 by the Washington State Department of Ecology for any discharge to the storm and surface water system;

6. Other nonstormwater discharges related to construction site dewatering discharges shall comply with the requirements of a stormwater pollution prevention plan (SWPPP) reviewed and approved by the city;

7. Other nonstormwater discharges from utility-owned infrastructure failures due to aging infrastructure or acts of God that result in nonstormwater discharges shall be minimized through implementation of municipal utility infrastructure programs, such as utility infrastructure repair, replacement, or rehabilitation; asset management programs, or preventive system repairs and maintenance; and

8. Other nonstormwater discharges resulting from city response to emergency or weather-related events.

E. Prohibition of Nonstormwater Connections. The construction, use, maintenance, or continued existence of nonstormwater connections (also known as illicit connections) to the storm and surface water system is prohibited regardless of whether such connections were previously made or lawful under past regulations in place at the time of connection.

F. Discharge of Pollutants – Liability for Expenses Incurred by the Utility. Any person responsible for pollutant discharge into the storm and surface water system who fails to immediately collect, remove, contain, treat or disperse such pollutant materials at the director’s request shall be responsible for the necessary expenses incurred by the city in carrying out any pollutant abatement procedures, including the collection, removal, containment, treatment or disposal of such materials.

G. Source Control Best Management Practices. To prevent discharge of illicit or prohibited discharge materials into the storm and surface water system, source controls shall be applied in accordance with the storm and surface water operation and maintenance standards. (Ord. 6321 § 23, 2016; Ord. 5905 § 1, 2009.)