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View recently adopted ordinances as of January 13, 2009 NOT YET CODIFIED OR INTEGRATED IN THIS SITE. (pdf file)

Ordinances enacted through January 13, 2009

Copyrighted by SANTA CLARA COUNTY CODE & Municipal Code Corporation, 1998.

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Sec. B11 1/2-27. Approved storm water pollutant source control BMPs.

A. Storm drain inlet labeling. Storm drain inlets for all Group 1, Group 2A, and Group 2B projects shall be clearly marked with the words "No Dumping - Flows to Bay," or the equivalent.

B. Waste plumbing drains and other drains.

1. Interior floor drains shall not be directly or indirectly connected to the storm drainage system.

2. Exterior drains within the following areas shall not be connected to the storm drain (Provide vermin proof grate or screen, and gas tight cap for external drains):

a. Equipment or vehicle washing areas.

b. Areas where chemicals, hazardous materials, or other uncontained materials are stored, unless secondary containment is provided.

c. Equipment or vehicle fueling areas or fluid changing areas.

d. Loading docks where chemicals, hazardous materials, grease, oil, or waste products are handled.

3. Roof runoff shall be directed first to landscaped areas or naturally vegetated areas, unless deemed infeasible by the Manager of the Development Services Office or a designee. Appropriate energy dissipation shall be provided.

4. Nonresidential facilities shall either: (a) provide secondary containment for all roof-mounted equipment, tanks, and piping containing liquids other than potable water; or (b) connect all covered equipment roof drains and equipment discharge lines to the sanitary sewer, with an appropriate backflow prevention device or air gap separation.

5. Boiler drain plumbing lines shall be connected to the sanitary sewer system with an appropriate backflow prevention device or air gap separation, and may not be discharged to the storm drainage system.

6. Cooling systems shall not be connected to or allowed to drain to the storm drainage system.

7. Cooling system condensate lines shall not be connected to or allowed to drain directly to the storm drainage system. The first choice discharge shall be the sanitary sewer with an appropriate backflow prevention device or air gap separation, and the second choice for discharge shall be to a landscaped or naturally vegetated area if the first choice is not practicable.

C. Swimming pool and spa discharges.

1. It shall be unlawful to discharge water from pools, hot tubs, and spas to the storm drainage system.

2. When draining a pool, a hose or other temporary system shall be directed into a sanitary sewer clean out. To prevent a cross connection from occurring, an air gap of two times the receiving sewer pipe diameter shall be provided.

3. For swimming pools located on premises where a sanitary sewer connection exists, a sewer clean out shall be installed in a readily accessible area. Such a cleanout shall not be provided when the site is served by an on-site sewage disposal system.

4. During periods without rainfall, swimming pool and spa discharges may be directed to landscaped areas for percolation and/or evaporation, provided this does not generate runoff to the storm drainage system and does not cause a nuisance to adjacent property owners or neighbors.

D. Vehicle and equipment fueling facilities. Vehicle or equipment fueling facilities shall be designed to prevent the run-on of storm water and runoff of spills. This shall be accomplished by:

1. Paving the fueling area with concrete or other impervious surface.

2. Covering the fueling area and the fuel pumps.

3. Grading the area (i.e., sloping inwardly) or installing a berm or curb around the perimeter of the fueling area. Storm drains shall be prohibited within these fueling areas, unless they drain to a permitted oil/water separator device.

E. Garbage and refuse receptacles serving food service facilities.

1. New food service facilities shall have a sink or other area for cleaning floor mats, containers, and equipment, which is connected to a grease removal device and thence to the sanitary sewer or an approved on-site sewage disposal system. The sink or cleaning area shall be large enough to clean the largest mat or piece of equipment to be cleaned.

2. New buildings constructed to house food service facilities shall include a covered area for a dumpster. The area shall be designed with slope or berms to prevent storm water run-on to the area and storm water runoff from the area.

3. Drains that are installed beneath covered dumpsters serving food service facilities must be connected to a the sanitary sewer or an approved on-site sewage disposal system.

F. Garbage and refuse receptacles. ("dumpsters") serving residences.

1. New residential buildings and all commercial and industrial buildings, except for single-family, duplex, and triplex residences, shall provide a covered-area for a dumpster.

2. The dumpster storage area shall be designed to prevent both storm water runon and storm water runoff under the cover.

3. Any drains that are installed beneath covered dumpsters must be connected to the sanitary sewer or an approved on-site sewage disposal system.

(Ord. No. NS-517.74, § 1, 10-17-06)

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