Agmt 2005 Mark Thomas & Company Inc

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c) Drainage Plans Existing storm drain pipes, inlets, culverts, and drainage ditches will be shown on the drainage plans. Drainage systems will be numbered, with letters assigned to individual drainage items. Preliminary drainage system modifications and profiles will be prepared on separate sheets. d) Siening and Pavement Delineation This task will include performing a field review of the project site and preparing an existing sign inventory. Using the obtained information conceptual level signing and striping plans will be prepared that appropriately inform northbound motorists in the double left turn lane onto Beatrice and the I-880 southbound on ramps which lane they should use to make their maneuver. It is assumed that special pavement markings and legends as well as overhead signs will be needed, along with advance guide signs on Washington Avenue between Lewelling and Beatrice. Likewise, guide signs will be required to advise southbound motorists how to get to I-880 southbound and to westbound Beatrice. These may also need to be overhead signs. Motorists using the I-880 southbound ramps (also includes I-238 southbound access) will need to use the loop ramp from the southbound right turn lane. Motorists desiring to use westbound Beatrice will need to continue to Beatrice and then turn right. Pavement legends may be needed to supplement the guide signs. e) Traffic Signal Modifications Preliminary plans for traffic signal and interconnect construction will be prepared in conformance with Caltrans standards. The plans will show existing and proposed traffic signal system layout. The preliminary plans will not have conductor nor equipment schedules. A signal timing report will also be prepared under this task. TJKM shall conduct new, directional, 15-minute interval machine counts for one week on Washington Avenue south of Beatrice outside of summer months (June through August) and away from holidays. Manual counts shall also be conducted at five intersections: Washington and Springlake, Washington and I-880 NB Off, Washington and Beatrice, Washington and Fargo/ Greeenhouse, and Washington and Lewelling on Tuesdays, Wednesday or Thursday at the same time the machine counts are being made. Weekend manual counts will also be made while the machine counters are in place, on Saturday from 11 a.m. through 4 p.m., and on Sunday between 11 a.m. and 3 p.m. These counts shall be used to update the existing Synchro model that TJKM prepared for the City of San Leandro in the 2003 TETAP project far coordination of signals along Washington Avenue. Floating car runs shall also be conducted, six runs in each direction, during the a.m., midday, p.m. weekday peak periods, and also during the weekend peak periods. Coordination analysis will be completed using the new counts, and coordination timing plans shall be prepared for City of San Leandro and Caltrans review. Once the coordination plans are approved, TJKM shall assist the City of San Leandro traffic operations staff and Caltrans traffic signal operations staff in the input and fine tuning of the signal coordination timings. TJKM shall also review all local, isolated signal timing settings, and will advise both the City of San Leandro and Caltrans with respect to recommended changes in green time settings, pedestrian settings, clearance intervals and detector settings. All information used to develop the recommended signal timings shall be summarized in a report that includes the recommendations. All computer files used for signal timing analysis shall be made available electronically to the City of San Leandro and Caltrans. The signal timing plans shall be input and ready for activation prior to final approval of the project. f) Lighting Plans ACTIA 11: I-880/Washington Avenue Interchange Improvements June 2005 COSL Project No. 144-39-007 Page 18 of 35