Agenda - Public Works Committee - 04/18/2023

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• Key points of the design -build irrigation are noted on the 7 page appendix and may not be to scale — The relevant notes germane to this RFP are in color (many notes in black and white are carried forward in the plan view drawing from a previous project) . All irrigation components shall be staked or located for field verification and approval by the city. • The Base Bid irrigation main line is in place and consists of a 2" PVC pressurized pipe 32" to 48" below grade approximately 8' to 10' north of the curb line. • The Add Alternate CL200 2" PVC main line shall be provided by the Contractor and installed 1.5' to 2' feet deep, approximately 1' foot back of curb. • There shall be one Acclima decoder and one Hunter PROS valve per block A, B, and C for three total decoders and valves for the Base Bid. There shall be one Acclima decoder and one Hunter PROS valve per block D and E for two total decoders and valves for the Add Alternate blocks. • Each block shall be served by 40 psi MP pop-up pressure regulating heads. The spray pattern shall be 5' x 30' with an approximate 20 % overlap between heads (maximum spacing of 21' to 24' feet) . Each zone line shall be connected to the main line with a 1" poly pipe. Each pop-up shall be connected to the zone line with 'funny pipe'. • There shall be one surge protector in the Base Bid block and another in the Add Alternate block, or more frequency if the Acclima manufacturing specifications call for it. There shall be one 8' foot ground rod 5/8" diameter every 500' feet or less, and located within 24" of each decoder. The ground rod shall be connected by a #6 or # 10 copper wire. • Each decoder and valve shall be in a green, 21" by 15" NDS 'jumbo' irrigation box blocked and secured to industry standards. • The Acclima 2-wire system shall include a 14 gauge (blue or orange) jacketed wire. • The contractor shall work with the City to program decoders, valves, with the Base Bid, and Add Alternate blocks on -site, following irrigation component installation. The Acclima CS3500 Installation Checklist (included in the Appendix) shall be consulted as part of part of project acceptance (where applicable), including also that spray patterns do not overlap curbing or street pavement. Work and Staging Areas: Confine work activities to the immediate project area, and approved traffic control and signage shall be employed for all vehicles, equipment and persons within Sunwood 4IPage