Agmt11 Mark Thomas & Company, Inc.

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• • • MARK THOMAS & COMPANY INC. i•' ProvFding Engineering, Surreylne and Pionnigg Services January 24, 2011 Mr. Brian Lee City of Redwood City 1017 Middlefield Road Redwood City, CA 94063 RE: STULSAFT PARICROAD REPAIRS PROPOSAL FOR CJVIL ENGINEERINGLESIGNSERVICES OFFICES Dear Mr. Lee; !Cupertino Ftesno We are pleased to provide this proposal for design services for the above referenced project. Pteuxlnton Sutrantenlu Su s itna PROJECT UNDERSTANDING 'Sop lose Sad *lee It is our understanding that the City would like to complete road repairs at three locations in Stulsaft comely Woinut Creel Park, The roads are used primarily for fire truck and park maintenance vehicle access. They are not ptiblic roads. The City would like Mark Thomas & Company, Inc, (MTCo) to conduct a field reconnaissance of the three sites, develop a repair plan for each location, and prepare construction plans and technical specifications for completing the repairs. The repair work would be considered a short term repair as a long term repair would require significantly more investigation, study, and design time to develop. The repair work would consist primarily of construction of a small retaining- wall and/or minor road realignment, minor site grading, and Minor drainage improvements at each location. The uttinimum usable road width to be provided at .each location after repair is 12 .feet. Based on an initial site visit with the City the assumed repair approach at each of the three locations is as follows: Location 1 (above picnic area): A small soldier pile wall approximately 120 feet long by approximately 3 feet of exposed height tail would be constructed to contain the edge of the road above a steep slope that has been eroding from stormwater runoff. Minor regrading .of the roadway and minor drainage improvements would be included if feasible to discourage further.erosion. Location 2 (close to creek cut bank): The road would be widened and realigned:for about:50 feet to. • move the edge of road fiurther away from the creek cut. bank. The existing storm drain pipe would be extended uphill from the creek and a new storm drain inlet and feeder pipes :Would be added sunder the widened road. A large tree may need to be removed to allow for the realignment. Minor dissipation improvements would be added at the oulvert otrtfall if feasible to reduce erosion impacts on creek batik. Location 3 (on top of hill) : A small Keystone type passive earth retaining wall approximately 80 feet long by approximately 4 feet of exposed 'height tall would be constructed on the downhill side of the 618 Walnut Street, Suite 204 San Carlos, GA 94070 v,ww.marklhomos.com Tel: (650) 363.8277 Fax: 1650) 363.8279 •