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would be applicable to the sources. Based on the source inventory and the applicable requirements (e.g., California Code of Regulations, 17 CCR, Section 93108, for control of ethylene oxide sterilizers), the foreseeable emissions of toxic air contaminants would be estimated. Upon estimating potential emissions after regulatory control, the emissions would be compared to the trigger levels specified by the BAAQMD in Rule 2-1-316. This scope of work assumes that potential emissions would not exceed the trigger levels, and that a more detailed risk assessment would not be necessary to demonstrate insignificant effects. Recent air pollution studies have shown an association between health effects and proximity to high traffic roadways. New sensitive receptors, such as the proposed medical facilities, deserve special attention because children, pregnant women, the elderly, and those with existing health problems are especially vulnerable to the effects of air pollution. The project site would be discussed in relation to its proximity to high traffic roadways, in particular, Interstate 880. A qualitative impact discussion would be included to address potential effects as they relate to recent guidance provided by the Air Resources Board in relation to diesel particulate matter. ElF anticipates that the hospital would include a steam generating facility (e.g., boilers for heating), emergency generators, miscellaneous laboratory and fume hoods, and possibly ethylene oxide sterilizers, and that the BAAQMD's new source review-permitting program would apply to the new sources. Written consultation with the BAAQMD may be necessary to determine appropriate emission factors for laboratory and fume hoods. If a new medical waste incinerator is included as part of the Plan, we assume most of the analysis would be completed as part of the BAAQMD permitting process, and not as part of the EIR. The potential of the project motor vehicle trips to cause localized carbon monoxide "hot spots" will be evaluated at up to four of the most severely impacted intersections. The Air Resource Board's CALINE4 dispersion model will be used to model the effects of project-level carbon monoxide at four of the worst performing intersections affected by the project during either weekday PM conditions. The modeled ambient air quality conditions (for I-hour and 8-hour averaging times) will be compared to the state and federal air quality standards. Where appropriate, strategies for mitigating the effects of increased regional emissions, odors, toxic air contaminants, or carbon monoxide will be identified. Any activities that are within the jurisdiction of the City of San Leandro to control will be targeted for emission reductions. Task 4.5 Hydrology and Water Quality. Re-development of the project site poses several minor potential impacts to hydrology and water quality. Grading changes may modify existing drainage patterns, and may create an increase in the total amount of impermeable surface on the site resulting in an associated increase in stormwater runoff and non-point source pollution. Measures will be recommended in the EIR to reduce adverse effects to less-than-significant levels, consistent with guidance from the Alameda County Clean Water Program and the National Pollutant Discharge Elimination System permit requirements. Consulting Services Agreement between City of San Leandro and EIP Associates Page 31 of 44