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iS <br />: . s f \ <br />. £ <br />f f v- t <br />The proposed wind turbine will be used for research and development purposes as part of the company's ongoing <br />effortsto,increase operational and energy efficienciesof the tfttbines it re-manufactures. The energy generated | <br />by the turbitie will also offset the company's demand for non-renewable energy for their operations. As proposed, <br />the project is a discretionary action by the City, which requires environmental review under ithe California j: <br />Environmental Quality Act (CEQA). § <br />• iv <br />Turbine specifications are identified below in Table 1, Summary of Turbine Specifications. The turbine would. | <br />be erected Upon a tubular tower, with a maximum blade height of approximately 100 feet and a ground clearance <br />of approximately 5L5 feet. The turbine will achieve full power at 37.6 mph (16.8 m/s), and the turbine has a | <br />rotational speed of approximately 44 rpm. The cut-in wind speed is 7.4 mph (3.3 m/s) and the cut-off wind speed § <br />is 62 mph (28 m/i^ An electronic wind vane allows the turbine to, change its orientation relative, to the wiridi <br />TABLE 1 u <br />SUMMARY Of TURBINE SPECIFICATIONS <br />Specifications: Vestas V17-90kW {Refurbished to be 50 kW) <br />Tubular Tower Height: 73.82 feet (22.5 meters) <br />Hub Height 76 feet (23.2 meters) <br />Rotor. Diameter: 44 feet (15.0 meters) <br />Total Height: 100 feet (30.5 meters) <br />Swept Area: 2,000 square feet (186 square meters) <br />Tip Ground Clearance: 51.5 feet (15,7meters) <br />Blades: 3 <br />.SOURCE: HSIiis Powsr Systems, 2012 <br />Site Conditions <br />The proposed project is located within an area zoned as an Industrial General District, bordered by industrial <br />properties to the west and east, and bordered by San Lorenzo Creek and a Residential Single-Family Districtto <• <br />the north. To the northwest is open space known as East Marsh, which is a subsection of the City of San > <br />Leandro's Roberts Landing Shoreline Marshlands Enhancement area. This area is 600 feet from the proposed ; <br />turbine location, and is separated from the project site by San Lorenzo Greek and its flood maintenance roads. The ;• <br />project area is bordered by the City of San Lorenzo to the south, and these parcels provide similar industrial land <br />uses, The turbine location is proposed in an open l&ydown yard behind (north of) the Halus Power Systems <br />building as depicted in Figure % Proposed Turbine Location. This area provides 4 acres and a minimum of 100 <br />feet of paved and ruderal open ground surrounding the turbine in any direction, and is 200 feet from any <br />permanent structures. Based on aerial photography of the project site, the laydown yard appears to be comprised <br />ofruderal upland vegetation. At this location, the turbine would be 370 feet from San Lorenzo Creek and 600 feet <br />from East Marsh, Prevailing winds originate from the west for eleven months of the year, excepting November <br />when winds originate from the east/northeast, as depicted in Figure 3, Prevailing Winds in the Marsh/Urban <br />Interface Zone- January through December, <br />4