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San Joaquin Valley Air Pollution Control District Page 4 of 7 District Reference No: 20230038 February G, 2023 trucks may have on residential communities and sensitive receptors . Since the Project consists of the construction of a truck parking facility , the Project has the potential to generate HHD truck trips The District recommends the County evaluate HHD truck routing patterns for the Project , with the aim of limiting exposure of residential communities and sensitive receptors to emissions . This evaluation would consider the current truck routes , the quantity and type of each truck ( e . g . , Medium Heavy - Duty , HHD , etc . ) , the destination and origin of each trip , traffic volume correlation with the time of day or the day of the week , overall Vehicle Miles Traveled ( VMT ) , and associated exhaust emissions . The truck routing evaluation would also identify alternative truck routes and their impacts on VMT and air quality . 4 ) Reduce Idling of Heavy - Duty Trucks The goal of this strategy is to limit the potential for localized PM2 . 5 and toxic air contaminant impacts associated with the idling of Heavy - Duty trucks . The diesel exhaust from idling has the potential to impose significant adverse health and environmental impacts . Since the Project is expected to result in HHD truck trips , the District recommends the MND include measures to ensure compliance of the state anti - idling regulation ( 13 CCR § 2485 and 13 CCR § 2480 ) and discuss the importance of limiting the amount of idling , especially near sensitive receptors . 5 ) Vegetative Barriers and Urban Greening There are single family residential units located west of the Project and a mobile home park located south of the Project . The District suggests the County consider the feasibility of incorporating vegetative barriers and urban greening as a measure to further reduce air pollution exposure on sensitive receptors ( e . g . , residential units ) . While various emission control techniques and programs exist to reduce air quality emissions from mobile and stationary sources , vegetative barriers have been shown to be an additional measure to potentially reduce a population ' s exposure to air pollution through the interception of airborne particles and the update of gaseous pollutants . Examples of vegetative barriers include , but are not limited to the following : trees , bushes , shrubs , or a mix of these . Generally , a higher and thicker vegetative barrier with full coverage will result in greater reductions in downwind pollutant concentrations . In the same manner , urban greening is also a way to help improve air quality and public health in addition to enhancing the overall beautification of a community with drought tolerant , low - maintenance greenery .