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(a) Dischargers of industrial waste from newly constructed, remodeled or converted commercial and industrial facilities shall be in full compliance with the provisions of this chapter at the time of commencement of discharge. Dischargers from newly constructed, remodeled, or converted commercial and industrial facilities, upon request of the superintendent, shall complete a waste minimization study in accordance with guidelines published by the superintendent, and shall certify that measures have been taken to minimize toxic constituents in the discharge.
(b) The owner of every newly constructed, remodeled, or converted commercial or industrial facility shall comply with the following requirements. These requirements shall apply to remodeled or converted facilities to the extent that the portion of the facility being remodeled or converted is related to the subject of the requirement:
(1) Segregated Industrial Waste Plumbing. The owner of every new commercial and industrial building or portion thereof shall cause the building to be constructed so that industrial waste is segregated, by means of separate plumbing, from domestic waste prior to converging with other waste streams in the sanitary sewer system. For the purposes of this section only, the term “new” shall also include change to a use that requires plumbing for industrial waste;
(2) Exterior drains shall be connected to the storm drain system;
(3) Loading docks: See Section 16.09.175(k);
(4) Fueling areas shall have impermeable floors and rain covers that extend a minimum of ten feet in each direction from each pump. Fueling areas shall be designed to prevent water run-on to the covered area;
(5) Condensate lines shall not be connected or allowed to drain to the storm drain system;
(6) Copper, copper alloys, lead and lead alloys, including brass, shall not be used in sewer lines, connectors, or seals coming in contact with sewage except for domestic waste sink traps and short lengths of associated connecting pipes where alternate materials are not practical;
(7) Sacrificial zinc anodes are not permitted to be in contact with the water supply in a water distribution system;
(8) Discharge drains for swimming pools, spas and fountains shall not be connected directly to the storm drain system or to the sanitary sewer system. When draining is necessary the discharge will be allowed by way of either:
(A) A hose or other temporary system shall be directed into a sanitary sewer (not storm drain system) clean out. A sewer clean out shall be installed in a readily accessible area;
(B) A fixed pipe with an air gap and receiving sink directed to the sanitary sewer.
(9) If installed, parking garage floor drains on interior levels shall be connected to an oil/water separator prior to discharging to the sanitary sewer system. The oil/water separator shall be cleaned at a frequency of at least once every twelve months or more frequently if recommended by the manufacturer or the superintendent. Oil/water separators shall have a minimum capacity of 100 gallons;
(10) New buildings and residential developments providing centralized solid waste collection, except for single-family and duplex residences, shall provide a covered area for a dumpster. The area shall be adequately sized for all waste streams and designed with grading or a berm system to prevent water run-on and runoff from the area;
(11) New multi-family residential units and residential development projects with twenty-five or more units shall provide a covered area for occupants to wash their vehicles. A drain shall be installed to capture all vehicle wash waters and shall be connected to an oil/water separator prior to discharge to the sanitary sewer system. The oil/water separator shall be cleaned at a frequency of at least once every six months or more frequently if recommended by the manufacturer or the superintendent. Oil/water separators shall have a minimum capacity of 100 gallons. The area shall be graded or bermed in such a manner as to prevent the discharge of storm water to the sanitary sewer system;
(12) Mercury switches shall not be installed in sewer or storm drain sumps;
(13) Fire sprinkler system flush, test or drain water shall not be discharged to the storm drain system. Discharges to the sanitary sewer system shall not exceed thirty gallons per minute (GPM). Higher discharge rates shall be diverted to a detention tank to achieve the thirty GPM flow; or
(14) Copper Roofing Materials. On and after January 1, 2003, copper metal roofing, copper metal gutters, copper metal down spouts, and copper granule containing asphalt shingles shall not be permitted for use on any residential, commercial or industrial building for which a building permit is required. Copper flashing for use under tiles or slates and small copper ornaments are exempt from this prohibition. Replacement roofing, gutters and downspouts on historic structures are exempt, provided that the roofing material used shall be prepatinated at the factory. For the purposes of this exemption, the definition of “historic” shall be limited to structures designated as Category 1 or Category 2 buildings in the current edition of the Palo Alto Historical and Architectural Resources Report and Inventory.
(Ord. 5084 § 2 (part), 2010)