COMPLIANCE INFO_FINAL INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 5/25

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North County Recycling Center and Sanitary Landfill Permit Revision Project Final Initial Study/Mitigated Negative Declaration · San Joaquin County | May 2025 62 Operating conditions during the a.m. and p.m. peak periods were evaluated to capture the highest potential impacts for the proposed project as well as the highest volumes on the local transportation network. The morning peak hour occurs between 7:00 a.m. and 9:00 a.m. and reflects conditions during the home to work or school commute, while the p.m. peak hour occurs between 4:00 p.m. and 6:00 p.m. and typically reflects the highest level of congestion during the homeward bound commute. Peak hour counts were obtained for the study intersections, and 24- hour counts were obtained for the study segments and site access road on Tuesday, November 19, 2024. The anticipated trip generation for the proposed project was estimated based on existing vehicle counts into and out of the project site, as well as the projected increase in permitted visitors (i.e., landfill customers including private citizens and contractors), full-time employees and haul trucks. The permitted number of visitors would increase from 850 to 1,200, an increase of 41 percent . For employees, the current 35 full-time employees would increase to 41, or 17 percent . For haul trucks, the count would increase from 58 movements per day to 109, or an 88 percent increase. Because the site is currently occupied by the existing North County Landfill, trip generation of the existing landfill was considered. During the 24-hour data collection period, there were 872 visitor vehicle entries and exits from the site, including 76 during the a.m. peak hour and 20 during the p.m. peak hour. As site traffic activity is predominantly associated with visitors, increasing the overall site traffic by 41 percent (the permitted increase in visitors) would net an additional 361 daily trips, including 31 trips during the a.m. peak hour and 8 trips during the p.m. peak hour. For employees, given that the proposed increase of 17 percent is lower than the visitor increase of 41 percent and the existing site traffic includes employees as well, a conservative approach was taken to consider the 41 percent increase in site activity as including employees. Haul trucks were considered separately even though some haul truck trips would be captured in the 41 percent site activity increase. There would be 51 added haul trucks per day, for 102 new daily trips (one trip in and one trip out per haul truck). The ratio of a.m. peak hour trips to daily trips is 9 percent, which would translate to nine new haul truck trips during the a.m. peak hour with five trips in and four trips out assuming an approximately even split between inbound and outbound. During the p.m. peak hour, there were 20 outbound movements and zero inbound. Given this is only 2 percent of the daily total volume with no inbound traffic, zero added haul trucks were assumed during the p.m. peak hour. The project is expected to generate an average of 461 new trips per day (359 visitor and employee trips and 102 haul truck trips), including 40 trips during the a.m. peak hour (31 visitor and employee trips and nine haul truck trips) and eight visitor and employee trips during the p.m. peak hour (no haul truck trips). REGULATORY SETTING San Joaquin County General Plan The County’s General Plan (December 2016) states that the County’s standard is Level of Service (LOS) C in general, or LOS D for minor arterials or roadways designated in the Congestion Management Plan (CMP), San Joaquin Council of Governments (SJCOG), as well as for Caltrans facilities such as SR-88. East Harney Lane, Jack Tone Road and Clements Road are classified as