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C. - 0 0 <br />w <br />and other facilities within the paved street that will <br />require adjustment to finished grade. <br />Task I -3 — Pavement Evaluation <br />This item of work may or may not be required for the <br />project, but based on our past experience with similar <br />projects, a pavement evaluation is an excellent tool for <br />determining rehabilitation or reconstruction structural <br />section requirements. <br />The following are typical scope of work items required <br />to perform the pavement evaluation to be performed by <br />our subconsultant, Leighton & Associates: <br />• Review available relevant information from City <br />files. <br />• Visit the site and map the extent of distress. <br />• Core the pavement at select location to measure the <br />existing pavement section, Asphalt Concrete and <br />Aggregate base thickness and collect representative <br />subgrade samples for R -value Testing. <br />• Perform deflection Testing to establish consistency <br />of the existing pavement section (optional). <br />• Provide pavement section for complete removal and <br />replacement of the section or provide overlay <br />thickness to improve the existing section. <br />• Provide construction specification. <br />• Preparation of a written report presenting the results <br />of the field exploration and testing, laboratory <br />testing and engineering analyses, as well as <br />conclusions and recommendations relative to the <br />geotechnical aspects of project design and <br />construction. <br />Task I -4 — Pavement Alternatives/Recommendations <br />ASL will conduct a job walk to identify pavement areas <br />and sidewalk, curb and gutter and handicapped access <br />ramps that may require removal and replacement. Areas <br />of distress will be identified and measured for dig -out or <br />cold milling. Milling areas along curb and gutter and <br />match points will be determined in the field to ensure <br />smooth transitions from new overlays to existing <br />pavements. <br />During the preliminary phase and after completion of the <br />pavement analysis and evaluation report and job walk, <br />ASL will use the information and recommendations to <br />develop layout sheets at 1" = 1:500 metric scale to show <br />the various pavement rehabilitation /reconstruction <br />alternatives and recommendations for other <br />1:Aprop99`p'83ii.doc <br />II- 4 <br />improvements required for the project. By developing <br />several alternatives and the estimated costs associated <br />with each alternative, it will provide the information <br />necessary for the City staff to make their rehabilitation <br />and reconstruction decisions based on economics and <br />effectiveness. ASL will also review the construction <br />feasibility and rideability of each alternative. <br />PHASE II — CONSTRUCTION PHASE <br />Task II -1 and II -6 — Preliminary and Final Plans <br />After review and approval of the recommended <br />pavement rehabilitation and reconstruction alternative, <br />ASL will prepare draft (65% complete) and final (95% <br />complete) construction plans for the proposed street <br />improvements. Plans will comply with standard <br />drawings and specifications of the City, Caltrans and <br />other agencies, as applicable. <br />The following outlines the specific details of the various <br />improvement plans: <br />Streets Plans: Street improvement plans will be <br />prepared at 1" = 40' scale (1:500 metric). Typical <br />sections showing existing and proposed improvements, <br />including pavement grinding, will also be included. <br />Intersection grid detail plans will be prepared at 1" = 20' <br />scale (1:200 metric). Plans and profiles will be prepared <br />at 1" = 40' (1:500 metric) horizontal and 1" = 4' (1:50 <br />metric) vertical scales. Cross sections for areas to be <br />reconstructed will be prepared at 1" = 4' (1:50 metric) <br />horizontal scale and 1.25" = P (1:50 metric) vertical <br />scale. Construction notes and details will be used to <br />designate the locations and limits of removal and <br />replacement of any curb and gutter, sidewalks and <br />handicapped access ramps. <br />Striping Plans: Replacement of traffic markings, traffic <br />signal loop detectors and pavement delineation will be <br />shown on separate I" = 20' (1:200 metric) scale plans <br />with two segments per sheet and included in the 65% <br />and 95% submittals. <br />General: Improvement plans will be prepared using <br />Microstation and furnished on 24" x 36" mylar. The <br />plans will also include a title sheet which will show a <br />vicinity map, project map, construction notes and <br />general notes on the City's standard title sheet format, as <br />well as a project key map showing locations for the <br />various sheet numbers. We will prepare 65% and 95% <br />complete plans for review and approval by the Cite. <br />After all City reviews are completed, comments will be <br />incorporated and the final plans submitted. The final <br />ASL CONSULTING ENGINEERS <br />