COMPLIANCE INFO_PRE 2019 - Laserfiche WebLink

Home Browse Search

Baseline Case(Disposal Activities) Baseline fugitive dust emissions from solid waste disposal operations were calculated using EPA recommended predictive emission factor equations. Fugitive dust from disposal activities include travel on unpaved roads and in disposal pits; material handling; and wind blown dust from disturbed surfaces and storage piles. Windblown dust emissions were calculated using recommended procedures from EPA AP42, Chapter 13. The baseline period used for determining actual emissions is the period June 1, 2003 through January 31,2004. The increase in unmitigated PM10 emissions of 125.9924 tpy from offroad disposal activities will exceed thresholds of significance levels established by Kern County of 15 tons per year. Fugitive dust emissions from unpaved haul roads account for about 80% of the total fugitive dust emissions. Emissions from other activities such as material handling (loading and unloading of trucks and scrapers) contribute to the remainder of the fugitive dust. Mitigated PM emissions were calculated using 50% control efficiency dust for suppression of dust from travel on watered haul roads. However, even with mitigation,emissions would remain significant at 60.7047 tpy. Therefore the Project would have a significant and unavoidable impact on air quality. Finding The impacts to air quality due to an increase in fugitive particulate matter emissions from offroad disposal activities are considered significant and unavoidable. All feasible and reasonable changes or alterations have been required in, or incorporated into,the project that substantially lessen the potentially significant effect as identified in the Final EIR. Brief Explanation of the Rationale for the Finding CEQA requires that all feasible and reasonable mitigation measures be applied to the project to reduce the impacts from construction and operation on air quality. Implementation of Mitigation Measure 4.1-6, described in detail above, would reduce fugitive dust emissions. No other reasonable or feasible mitigation has been identified that will reduce impacts to air quality for the project. Potential Significant Effect Without appropriate mitigation,the project has the potential to significantly impact air quality due to total particulate matter emissions from the operation of the project. Description of Specific Impact The combined particulate matter emissions of all the Project components that contribute to emissions of particulate matter discussed in Impacts 4.1-1 to 4.1-9 of the Draft EIR are presented below. This includes each Project component along with its mitigated particulate emissions. Particulate emissions resulting from exhaust emissions, and landfill gas flaring identified in the ozone precursors impacts are also identified since they contribute to the total Project's operational particulate emissions. The net emissions increase of 64.4073 tpy of PMio exceeds the significance threshold of 15 tpy and therefore, even with all feasible mitigation, is significant and unavoidable. Therefore the Project would have a significant and unavoidable impact on air quality. Finding Findings of Fact—Section 15091 March 15,2016 H. M.Holloway Landfill Modification Project Final Board of Supervisors 12