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7.A. - Page 29 use airports, or private airstrips within two miles. Therefore, implementation of the proposed project will not result in a safety hazard for people residing or working in the project area. Furthermore, the proposed amendments would not change the allowable heights or land uses within the Downtown; therefore, the analysis conducted by the AL UC and C/CAG will not be altered and no additional impacts are anticipated as a result of the proposed amendments. g. The proposed design will be required to comply with all applicable City codes and regulations pertaining to emergency response and evacuation, as well as fire protection and security. In addition, DTPP EIR Mitigation 8-1 requires the City to implement signal detectors at selected intersections as needed over time to provide priority traffic signal timing for emergency response vehicles; this program is underway. As a result, the proposed project will not impair or interfere with emergency plans, and the impact is considered less than significant. The proposed amendments will not change the circumstances in which Mitigation 8-1 is requires and therefore will not require arry further analysis. h. The project site is located in a Downtown urban environment not adjacent to wildlands and therefore will not expose people or structures to a significant risk of loss, injury, or death involving wildland fires. The proposed amendments will not result in arry changes that would require arry further analysis for exposure to wildland fires. Summary of Impacts Potentially Less than Significant Less than Significant With Mitigation Significant No Im act Incor orated Im act Im act IX. HYDROLOGY AND WATER QUALITY -- Would the project: a) Violate any water quality standards or waste discharge requirements? X b) Substantially deplete groundwater supplies or interfere substantially with X groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table level (e. g., the production rate of pre-existing nearby wells would drop to a level which would not support existing land uses or planned uses for which permits have been granted)? c) Substantially alter the e�sting drainage pattern of the site or area, including X through the alteration of the course of a stream or river, in a manner that would result in substantial erosion or siltation on- or off-site? d) Substantially alter the e�sting drainage pattern of the site or area, including X through the alteration of the course of a stream or river, or substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site? e) Create or contribute runoff water which would exceed the capacity of existing X or planned storm water drainage systems or provide substantial additional sources of polluted runoff? fl Otherwise substantially degrade water quality? X g) Place housing within a 100-year flood hazard area as mapped on a federal X Flood Hazard Boundary or Flood Insurance Rate Map or other flood hazard delineation map? h) Place within a 100-year flood hazard area structures that would impede or X redirect flood flows? i) Expose people or structures to a significant risk of loss, injury or death X involving flooding, including flooding as a result of the failure of a levee or dam? j) Inundation by seiche, tsunami, or mudflow? X Documentation a. & e. The plan area and proposed project site are located within a Downtown urban setting, which is served by an existing storm drain system that outfalls into San Francisco Bay. Implementation of the proposed project will utilize the existing storm water conveyance facilities and will not contain uses that will involve the discharge of coolecl/heated water or pollutant-laden runoff. However, given the local urbanized area, the existing storm water 20