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Lir Work Plan for Refined Plume Definition and Management of Floating Product-7500 W 11th St., Tracy, CA. Page 70 <br /> with a bituminous slurry seal coat before any equipment is installed in it. The enclosure will <br /> be surrounded by 6-ft. high chain link fence equipped with a 12-ft wide lockable gate. The <br /> surface equipment enclosure is shown on Figure 15. <br /> 9.4.3.3 Air and Discharge Line Conduits <br /> The previously-described air supply lines to, and fluid discharge lines from the skimmer <br /> pump systems in the floating product extraction wells will be placed in 3-in. diameter <br /> Schedule 80 PVC electric conduits that will be buried in trenches connecting the surface <br /> ir... equipment enclosure to the 17 in. by 17 in. square steel well head vault with a 24-in. skirt and <br /> heavy bolted steel covers. <br /> 9.4.3.4 Noise Reduction Housing <br /> The 5 hp, compressor that will supply air to the skimmer pump system, when in continuous <br /> +r operation generates noise in the range 85-95 decibels (dB), To comply with the San Joaquin <br /> County Community Plan regulations applicable to noise suppression at semi-permanent <br /> industrial facilities, it will be necessary to enclose the air compressor in a light structure <br /> �► designed to reduce noise at the fence line of the surface equipment enclosure to 55 dB. This <br /> noise suppression system is also shown schematically on Figure 16. To provide for adequate <br /> ventilation and cooling of the compressor, the structure will be suitably ventilated and will be <br /> provided with access doors to permit compressor maintenance. <br /> yam, 9.4.3.5 Electrical Power Supply <br /> To provide electrical power to the 5-hp compressor used to activate the pneumatic pumps, it <br /> will be necessary for Pacific Gas and Electric (PG&E) to install a transformer on the <br /> '-` electrical power pole located near the northwest corner of the intersection of West Eleventh <br /> Street and Chrisman Road so that the voltage can be dropped from that of the transmission <br /> system to that required by the floating product remediation system(i.e., 110 volts ac). <br /> Regulations do not permit direct supply pf electrical power directly from a PG&E-owned <br /> power pole even after the voltage has been reduced by transformers. To provide power to the <br /> equipment enclosure area, it will be necessary to install a "customer's" power pole in the <br /> enclosure and to carry the reduced voltage electricity from the existing PG&E pole to that <br /> supply point. <br /> The electrical supply line will be brought down the new power pole in armored conduits <br /> protected by a steel cover. A power cut-off switch and a waterproof power panel equipped <br /> with the requisite circuit breakers will be mounted on a steel frame located at the bottom of <br /> the pole. Electrical lines rated for outdoor service will carry electricity from the power panel <br /> to the air compressor and other points within the equipment enclosure where it is required. <br /> Should it be necessary to maintain or adjust the skimmer pump recovery system or its <br /> auxiliary system during the hours of darkness, a flood light will be installed at the top of the <br /> system's dedicated power pole and will be operated by means of a switch located at shoulder <br /> height on the power pole. <br /> sic <br />