ITEM 16 ATT 4 - Laserfiche WebLink

It is understood that field conditions may necessitate that the curb reveal height or curb face is adjusted between 4 and 10 inches per the direction of the Engineer. It is also understood that the type or class of access ramp may be changed or revised in the field as deemed appropriate by the Engineer. The contractor is made aware that the existing curb height along West Las Positas Boulevard and Gibraltar Drive is up to 8 inches and therefore, curb and gutter replacement shall be in kind and no separate payment shall be allowed. At some locations, the existing ADA ramp may already conform to the latest ADA requirement pertaining to slopes and minimum widths, etc., except for missing truncated domes and presence of the concrete lip. At such location(s) shown on the plans and/or as field directed by the Engineer, the contractor shall install surface -applied truncated domes per the manufacturer's recommendation and grind the concrete lip flush with the flowline as approved by the Engineer. At some locations, the Contractor shall coordinate construction of the access ramp, driveway or sidewalk with the fronting property owners due to the removal of existing decorative stones, lawns, hedges, bushes, etc., that may interfere with the construction of the access ramps, driveway or sidewalk. If needed, work at such location shall also include tying into the existing irrigation system, modifying existing irrigation system, installing new irrigation system and may also include the installation of a new lawn, new landscape, new concrete surfacing, or similar material matching existing material in order to cover areas beyond the limit of the access ramps. Where existing asphalt concrete roadway or driveway is to be removed in conjunction with the construction of pedestrian ramp, curb/gutter, and driveway, the asphalt concrete surfacing outline for the AC saw cut shall be measured 12 inches from and along the lip of gutter or as shown on the project plans and shall be saw cut to a minimum depth of 3 inches and maximum depth of 6 inches with a power driven saw before removing the asphalt concrete surface. These areas shall be excavated to a minimum depth of 6 inches and replaced with full depth hot mix asphalt (HMA). Per direction from the Engineer, some locations may require the Contractor to remove and replace concrete curb and gutter that includes angle bars supporting the curb inlets. These locations may also involve reinforcements on the gutter pan within the pay limit width of the drain inlet per City Standard Detail 201. Locations identified on plans for tree root inspection by City Arborist shall be coordinated through the project inspector a minimum of 48 hours prior to the concrete removal and shall be included in the 3 weeks look ahead schedule. All the concrete shall be removed from the area and tree roots larger than 2 inches that is requested to be removed or grinded shall be marked with paint. The City will attempt to review the removed sections daily. However, the City will guarantee the areas will be inspected within 48 hours after receiving notification in writing the area is ready for inspection. The contractor shall maintain the area per their approved pedestrian traffic control plan and may require temporary ramping and grading to allow pedestrian traffic through the removed area if alternative routing is not available. Locations in which tree removal (by Annual Curb & Gutter for Street Resurfacing Project, CIP No.25509 Page 54