Draft Environmental Impact Report - California Off Highway Vehicle ...

3.2 Air Quality
Handbook identifies 12 operations as potentially generating odors: wastewater treatment plants,
sanitary landfill transfer stations, composting facilities, asphalt batch plants, chemical
manufacturing, fiberglass manufacturing, painting/coating operations (e.g., auto body shops),
rendering plants, coffee roasters, food processing facilities, and confined animal facilities. The
SVRA site is not within 1 mile of any facility that conducts these operations so staff and visitors at
the SVRA would not be affected by off‐site odors.
During operations, vault toilets could be sources of potential odors on the project site. However,
OM Guideline 1.6 in the General Plan requires the installation of odor control systems in these
facilities which would ensure that potential odors from the vault toilets would not be considered a
nuisance. With implementation of this General Plan guideline, odor impacts during project
operations would be less than significant.
Toxic Air Contaminant Emissions
The proposed fuel station would dispense gasoline and diesel fuel, which contain benzene, ethyl
benzene, toluene, xylene, and methyl tertiary butyl ether, all of which are TACs. Therefore, the
proposed fuel station would require separate emissions reporting and a permit from Butte County
AQMD under Rule 221, “Phase I Vapor Recovery Requirements.” Compliance with the Butte
County AQMD permit would reduce potential impacts from fuel dispenser emissions.
Several residences are located within one‐quarter mile of Clay Pit SVRA and are considered
sensitive receptors. The potential exists for exposure of sensitive receptors to TAC emissions from
two‐stroke engines. The current estimate of two‐stroke engines used at Clay Pit SVRA is
approximately five per day on peak days, which is approximately 5% of all OHVs (Appendix B).
EPA requires that all OHVs and all‐terrain vehicles manufactured in 2007 or newer be four‐stroke
engines. Based on this EPA mandate, the number of two‐stroke OHVs operated at the SVRA would
be less than 5% of the total OHV fleet inventory in 2017 and even less in 2030. Therefore, the
contribution of TAC emissions from OHV use at Clay Pit SVRA would be negligible. In addition, the
SVRA is subject to the Red Sticker Riding Schedule (Appendix C) whereby red sticker vehicles are
only permitted to operate from September 1 through June 30 each year. However, every OHV
entering the SVRA currently is not inspected for compliance with this schedule. Following
implementation of the General Plan, staff at the proposed entry kiosk would ensure that all OHVs
operating at the SVRA comply with the Red Sticker Riding Schedule, thus reducing TAC emissions
from two‐stroke engines. Finally, CARB does not consider OHVs and ATVs a source of TACs
(Spencer, pers. comm., 2011). Therefore the impact of OHV emissions on sensitive receptors
during project operations would be less than significant.
Localized Concentrations of Carbon Monoxide
Implementation of the General Plan would result in increased use of the SVRA and increased
traffic volumes at project area intersections. If roadway congestion occurred at intersections in
Clay Pit State Vehicular Recreation Area
February 2012 3.2-16 Draft EIR