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Ciry Place Sky Lofts Final Environmental /mpact Report b) Stockpiles of soil shall be properly contained to eliminate or reduce sediment transport from the site to the streets, drainage facilities, or adjacent properties via runoff, vehicle tracking, or wind. c) Appropriate BMPs for construction-related materials, wastes, spills, or residues shall be implemented to minimize transport from the site to streets, drainage facilities, or adjoining properties. d) Runoff from equipment and vehicle washing shall be contained at construction sites unless treated to reduce or remove sediment and other pollutants. e) All construction contractor and subcontractor personnel are to be made aware of the required BMPs and good housekeeping measures for the project site and any associated construction staging areas. f) At the end of each day of construction activity, all construction debris and waste materials shall be collected and properly disposed of in trash. or recycle bins. g) Any designated smoking area shall have an appropriate cigarette waste receptacle that is fitted to not allow cigarette butts to enter storm water or drains during rain or high winds. All contractor and subcontractor personnel will be directed to dispose of cigarette butts in these receptacles. For Post-Construction (Water Quality Management Plan) (WOMP) W-4 Prior to Finalizing design plans, a Water Quality Management Plan (WQMP) shall be prepared addressing post construction storm water runoff. This will consist primarily of structural BMPs addressing the urban runoff from the site. 4.2.7.4 Level of Significance of Impacts Related to Water Quality The adverse impacts of the City Place Sky Lofts project related to water quality during construction will be mitigated to below a level of significance with the implementation of mitigation measures W-3 and W-4. 4.2.8 NOISE IMPACTS 4.2.8.1 Potentially Significant Adverse Impacts Related to Noise As described in Section 4.9 (Noise) of the EIR, mechanical equipment noise will be associated with the ventilation system for the underground portion of the parking structure, with the mechanical system for the residential tower, and with the outdoor amenities. Depending on the type of equipment and where it is located relative to the nearby properties, the unmitigated noise levels produced by the mechanical equipment may exceed the City of Santa Ana's Municipal Code standards at the adjacent off-site properties. 4.2.8.2 Finding Related to Noise Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the Final EIR. F.'.PROJ-ENI/I City Place Sky Loftsl Final EIRI Findings-SOC! Findings-SOC. doc Page 17 January 23, 2009 75A-127