Krazan & Associates 3/7/2018 - Laserfiche WebLink

Scope of Services,Water Main Replacement"T" PSA EXHIBIT A-1 Page 1 EXHIBIT A-1 GEOTECHNICAL ENGINEERING SCOPE OF WORK CITY OF EVERETT UP NO. 3684, WATER MAIN REPLACEMENT "T" Introduction and Background The City plans to install new ductile iron water pipe and abandon in-place existing cast iron pipe along Colby Avenue between 37th Street and Pacific Avenue, 25th Street and 21st Street, and also W Mukilteo Blvd between Glenhaven Drive and Olympia Blvd. (See Figure 1 and 2) The Colby Avenue project replaces existing 3-inch, 6-inch and 8-inch aging cast iron water mains having a frequent break history with new 8-inch diameter ductile iron pipe. The W Mukilteo Blvd project replaces aging 6-inch and 8-inch cast iron pipe with new 12-inch ductile iron pipe and relocates an existing 12-inch main. The work also includes removal or abandonment of valves, fire hydrants, water service lines (from mains to the shut off at the meter boxes), new water meter boxes and setters, related appurtenances and surface restoration. Scope of Services The purpose of geotechnical services is to evaluate subsurface soil and groundwater conditions as a basis for providing geotechnical engineering recommendations for design and construction of the water main replacement and future sanitary sewer main replacement. Geotechnical consultant's proposed scope of services will include, and not be limited to, the following tasks: 1. Review Previous Geologic and Subsurface Information a. Review subsurface information, existing construction data, and other available geotechnical reports in the vicinity regarding subsurface soil and groundwater conditions. 2. Plan the Exploration Program and Obtain Permits a. Complete a site visit to locate the proposed borings, call for underground utility locates, plan the traffic control operations, and develop right-of-way permit applications, as required. i. Provide recommendation to number and locations of borings. Provide a minimum of one boring per block. Include rationale in Geotechnical consultant's choice in the number and locations of borings if different from the one boring per block minimum. ii. Locate all borings within paved surface so as to measure and record paved surface types and thickness. b. Submit permit applications, traffic control plans, and boring exploration plans to City of Everett for review and approval. i. Geotechnical Consultant is responsible for notifying public of no parking if borings are located within street parking areas. City forces will post the no parking signage provided Consultant gives City times and dates and minimum of 48 hours' notice. Consultant may not begin boring activities until a minimum of 48 hours after City posts the signage. 3. Field Explorations and Laboratory Testing a. Complete a site visit to meet with utility representatives and clear boring locations. b. Explore subsurface soil and note groundwater conditions at the site by drilling borings to depths recommended in 2.a.i. Complete field explorations under the direction of a geotechnical engineer or geologist. The explorations will be located in the field by measuring or pacing from existing site features such as driveways, structures and other site features shown on the drawings. Geotechnical consultant representative will maintain a detailed log of each exploration and obtain samples of the various materials encountered. Record pavement depths to the nearest 0.5 inch and pavement types encountered. The samples will