Cascade Well No. 10 Drywell Installation

The character of the work is the construction of two 30' drywells, a sedimentation manhole, and associated pipe. The major quantities of work involved in this project are: quantity measurement item 218 lf 12" hdpe sdr 26 pipe 2 ea 30' deep drywell 1 ea sedimentation manhole. Contract terms, conditions and specifications may be reviewed at the office of the department of environmental services at gresham city hall. Copies may be obtained electronically from the department of environmental services by contacting sarah white at (503) 618-2526 or sarah.White@greshamoregon.Gov. Each workers in each trade or occupation that the contractor, subcontractor, or other person who is a party to the contract uses in performing all or part of the contract, must be paid not less than the higher of the applicable state or federal prevailing rate of wage. The applicable state or federal prevailing wage rate for this project shall be the most current wage rates published before the date of bid opening. The city of gresham is an equal opportunity and affirmative action employer. All bids must be submitted on the forms furnished by the city of gresham, mailed or delivered in a sealed envelope plainly marked "Sealed bid for cascade well no. 10 drywell installation" and bearing the name and address of the bidder. The bid must be accompanied by a certified check, cashier's check, irrevocable letter of credit issued by an insured institution as defined in ors 706.008, or bid bond in an amount not less than ten percent (10%) of the total bid. These specifications provide details regarding the scope of work for construction and testing of a new drywell system for the City of Gresham (City) to be located in SE 217th Avenue in Gresham, Oregon (see Figure 1); the construction site (Site) is located near the future Cascade Well 10 municipal water well site and east of the North Gresham Elementary School property. Construction of the new drywell system will include installation of two approximately 30-foot deep drywells, a sedimentation manhole, a ditch inlet, and associated storm water drain piping (i.e., conveyance piping) connecting these devices. The new drywell system will be used for discharge of groundwater generated during testing of Cascade Well 10, and will continue to be used for pump-to-waste operations and management of stormwater runoff from the Cascade 10 well site after it is developed and operational. These specifications supplement the City's 2022 Public Works Standards. The conceptual designs for the new drywell system as outlined in these specifications represent anticipated designs; the City expects that the final designs will be based on the subsurface conditions and other situations encountered during excavation and will be finalized by the Contractor in consultation with the City and/or City's Representative. The City's Representative will also periodically observe the completion of the drywell system excavation and construction work by the Contractor on behalf of the City. The quantities provided on the Schedule of Prices in the Bid Form (Section D of the Contract Documents) are listed as Lump Sum, Each, Linear Foot, Cubic Yards, Ton, Square Feet, or Hours for the various line items of the bid. All quantities provided on the Schedule of Prices are based on the anticipated designs of the drywells and drywell system (Attachment 1). The actual quantities may change based on the final depths of the drywells (i.e., if a drywell can only be installed to 20 feet below ground or 25 feet below ground due to, for example, refusal on boulders). The City reserves the right to limit (reduce) any aspect of the project for any reason. There shall be no recourse by the Contractor for loss of project revenue or value as a result of reduced scope. Additional labor, materials, equipment, or other items not described in these specifications, but necessary to complete the work, shall be considered as incidental items. Scope of Work Work completed at the Site will generally consist of excavation, construction, and testing of the new drywells, treatment devices, and associated storm drain piping with the following estimated construction features and minimum specifications:

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Plumbing, Common Work Results for Plumbing.