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.c.u ENVIRONMENTAL CHECKLIST The temporary construction easement width that would be requited for proposed pipe installation in public roadways would be approximately 30 feet. As specified above, open trench construction within paved roadways would be expected to proceed at a rate of about 2001ineaz feet per day. Consequently, impacts would be relatively brief at any one location along the pipeline alignment, at most a few days. Construction is proposed in the right-of-way of Davis Street, Neptune Drive, and Monarch Bay Drive. The following provides a description of the streets affected: Davis Street west of Doolittle Drive is a two-lane roadway that ends at the Davis Street Transfer Station, immediately south of the San Leandro WPCP. Pipeline construction within this roadway would occur adjacent to the only access to the transfer station. The 30-foot-wide construction zone would result in insufficient access to maintain two-way traffic flow, requiring alternate one-way traffic flow for vehicles accessing the transfer station. The pipeline segment is less than 150 feet long, and construction would only reduce driveway access for approximately one to two days. Monarch Bay Drive is a two-lane roadway extending from Neptune Drive with intermittent parking on one side. The pipeline construction zone of 30 feet would leave roughly 12 feet of pavement to provide one-way flagger traffic control. A separate parking area, 31 feet wide, parallels Monarch Bay Drive along the edge of the Monarch Bay Golf Complex. This area could be used for staging. Table 1-2 in the Project Description, Section 1.0, identifies all roadways in which the alignment for the new pipeline would occur within or across. Bore and jack construction is not anticipated to be needed during construction in roadways. Bore and jack methods would be used for installation of pipeline for the Northern Pipeline Route, if selected, along the maintenance dirt road at the WPCP to avoid impacts to a drainage canal. Construction-generated traffic would be temporary and therefore would not result in any long- term degradation in operating conditions or level of service on any Project roadways. The primary impacts from the movement of construction trucks would include short-term and intermittent lessening of roadway capacities due to slower movements and larger turning radii of the trucks compared to passenger vehicles. The pipeline alignments generally are located within the paved section of major streets, gravel roads at the Oyster Bay Regional Park, or along the levee on the WPCP property. As discussed above, pipe installation could generate up to 15 off-site construction worker vehicle round trips (30 one-way trips) and 34 off-site truck round trips (68 one-way trips) per day. These Project-generated trips would not be substantial relative to background traffic conditions on all roadways in the affected areas, and would fall within daily fluctuations of traffic volumes_ Therefore, this short-term increase in vehicle trips would not significantly affect level of service and traffic flow on roadways. If there is a public event at the Marina Park or Monarch Golf Course Complex, construction activities would add to the existing roadway congestion in the area, especially on Neptune Drive and Monarch Bay Drive. Construction hours on roadways near the Marina Park and the Monarch Bay Golf Course Complex would take into consideration the events schedule. Proposed hours of construction for this project are Monday through Friday, 8:00 a.m. to 5:00 p.m. for most pipeline segments. Most Project-related hauling and deliveries would be dispersed throughout the day, thus lessening the effect on peak-hour traffic. Project truck traffic occurring weekdays during the hours of 7:00 to 9:00 a.m. and 4:00 to 6:00 p.m. would coincide with peak- period traffic, and therefore, would have the greatest potential to impede traffic flow. San Leandro Recycled Water Project 2.-45 ESA / 7A3193 draft IS/MIYD