Site work for a civil project in Ben Lomond, California. Completed plans call for site work for a road / highway; and water / sewer project.

Drainage system upgrades and slope stabilization at inlets & outlets. 05-SCr-9-9.0/25.5 In Santa Cruz County Near Ben Lomond At Various Locations From Scenic Way To 4.7 Miles North Of The Northern Junction Of Routes 9/236. The Contractor must have either a Class A license or any combination of the following Class C licenses which constitutes a majority of the work: C-42, C-12, C-8. 270 Working Days Submit your bid with bidder's security equal to at least 10 percent of the bid. 22% DBE Requirement CADOT - Drainage System Upgrades and Slope Stabilization at Inlets & Outlet Present bidders' inquiries to the Department and view the Department's responses at: http://ppmoe.dot.ca.gov/des/oe/bid-inquiries.php Questions about alleged patent ambiguity of the plans, specifications, or estimate must be asked before bid opening. After bid opening, the Department does not consider these questions as bid protests The Upper State Route 9 Drainage and Erosion Control Improvements Project (Project) is located at 9 different locations along State Route (SR) 9. The Project is to improve drainage facilities that contribute to the discharge of sediment in the San Lorenzo River. The Project will upgrade drainage features and replace culverts along SR 9. Culvert replacement will require excavation, backfill, paving, and restriping. The method of construction for Project location 6, 7, 8, 9, 21, and 23 will involve a cut-andcover method. This includes cutting a concrete section of the road surface just wide enough to remove the old culvert and replace it with a new one, excavating the existing culvert from top down, and placing the new culvert at the same location. Once the new culverts are placed, they will be backfilled with concrete or native soil from the excavation of the old culvert. The concrete will be set to grade with the existing travel way or a new roadway structural section (gravel and asphalt) will be placed over the excavation to match the existing asphalt surface. Excavated material will either be temporarily stored on the pavement within the work area or hauled off-site. Trenchless construction allows for installation of prefabricated pipe through the ground without cutting the roadway. The pipe is pushed with a hydraulic ram behind the rotating cutter head of an auger boring machine. This culvert replacement method is performed where there is a large amount of fill between the top of the existing culvert and the roadway above, where the cut-and cover method is impractical or impossible. Temporary access will be graded down to the outlet or inlet location of the new culvert to allow a steel tracked excavator or small crane to gain access to the outlet or inlet. An area of 40 feet by 40 feet will be cleared and graded at the outlet or inlet to place the boring machine, its support rails, and a steel thrust block. This trenchless construction method will take place at Project location 15. Temporary shoring may be required for the jacking pits. Where water is present during the work window, temporary diversion and/or dewatering may be required. Typically, diversions will consist of an upstream and downstream cofferdam, constructed gravel bags, sheet pile, or other material. A pipe or hose will convey water from upstream to downstream, bypassing the construction area. If dewatering is required, then water will be treated through filtration either in a baker tank or upland infiltration area, prior to its release back into a stream channel. If temporary diversion or dewatering is required, a diversion and/or dewatering plan will be submitted for approval prior to work. Utility relocations are not anticipated for this Project. The rock class size for newly installed RSP will be 300 lb/Class IV RSP. Caltrans proposes to improve drainage facilities that contribute to the discharge ofsediment from Caltrans right-of-way (ROW) into the adjacent San Lorenzo River, in Santa Cruz County, California. The Project is located along Highway 9 (SR 9) and includes 24 discrete project locations between postmile 8.5 and postmile 26.0. Specifically, the Project would upgrade drainage features and replace culverts along SR 9. In many cases the Project would require upgrading the size ofthe culvert to a minimum of 24 inches in diameter to increase the discharge capacity, reduce bedload and suspended load transport, eliminate roadway embankment and shoulder erosion, and prevent entrapment of woody debris and a subsequent build-up ofsediment. Several ofthe project sites would require excavation, backfill, paving, and restriping and also potentially include replacing or constructing downdrains, overside drains, manholes, retaining walls, headwalls, and rock-slope protection. Ground disturbance and vegetation removal may occur at all 24 locations. Construction equipment, staging, and access would be within the current alignment along SR 9 or within disturbed areas within the Caltrans ROW'. Construction activities are anticipated to take place between September 2022 and March 2025. A retaining wall (Bridge No. 36E0061) is proposed at PM 11.62 on SR 9 as a part of the SR 9 Upper Drainage and Erosion Control Improvements project (PM 8.5 to 25.48). At drainage system Location 7, an existing 55-foot long retaining wall along the northbound lane will be replaced with a new retaining wall which will extend 72 feet to the north. The new retaining wall will be 126'-9 3/8" in length with retaining heights varying from 6'-0" to 11'-0". The new retaining wall will shift farther away from the SR 9 centerline. The maximum distance between the layout line of the new wall and the centerline of SR 9 will be 18'-5 1/4". The retaining wall information is presented in Table 1. Refer to the Location Map in Figure 1 for the project location. All elevations referenced within this report are based on the North American Vertical Datum of 1988 (NAVD 88), unless otherwise noted. NAVD 88 equals the National Geodetic Vertical Datum of 1929 (NGVD 29) plus 2.74 feet.