Permits & Development - Encroachment(EP)/Driveway(DW) Permits - 2013_PS-1300501 thru PS-1301000_ - PS-1300912

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The primary users of the section of road are the two Marinas (Tiki Lagoon and Turner Cut Resort) .and McDonald Island, which services: Reclamation District 2030, PG&E gas storage and agricultural operations including potatoes, asparagus and sod. The Reclamation District 2030 has expressed an insistence that the road realignment be up to SJC standard for a rural road. The existing road is now located on the landside slope of the levee, essentially the toe. The levee is sandy and the subsurface is not stable. There was at one time a facility located in the vicinity of levee stations 245+00 to 255+00. Pilings are still in place. There is through seepage between station 250+00 and 254+00, which is saturating the west shoulder of the MIR. The road is less than 25 ft wide with inadequate shoulders. Prior to construction of the toe berm the landside shoulder dropped off at steeper than a 2:1 slope into the adjoining ditch. The road experiences significant settlement and lateral movement as it likely has for its lifetime being constructed on the very soft and moist marsh deposits. The road section is likely a combination of layers of chip seal, AB, sand/oil seal, and about 50 years of patched potholes and cracks. The section likely has pervious areas and potential settlement voids. In order for the RD to relocate the road and build it to the SJC rural standard the RD will have to eliminate other portions of its levee project. The RD has the contract for the levee work underway with ASTA Construction of Rio Vista and must make an immediate decision to shift the levee work to this area. The RD has designed the proposed improvements for the levee work and road relocation and is set to secure revisions to the contract to shift the levee work and construct the new road. If the road cannot be realigned at this time the habitat setback levee will be constructed between levee stations 206+50 to 236+50. This area requires less import fill than the MIR relocation site and would allow the RD to complete all of the sites currently funded with the DWR PFA. The RD's position is that relocating the road and constructing the setback levee in the location of the MIR is the best use of funds for flood protection. it is my opinion that the relocated MIR constructed to the SJC rural standard will perform better than the existing road, require less maintenance and will be safer for public travel. Enclosed herewith are the current plans for the levee improvements and the road realignment. Also enclosed is a draft pavement design to the SJC standard and an estimate of the cost. The section provided will at this time be 3"AC over 16"AB and note that in addition to the required, stabilizing fabric will be provided for additional gravel equivalent and enhanced performance. The plan would be to construct the new road absent surfacing before disturbing the existing road with the levee work. Traffic would run on the new road for 60 to 90 days without surfacing during which time the sub base could be dressed and repaired. Paddles would be installed to mark the edges of the roadway and some speed control should be in place until surfacing and striping is complete.