Specifications include, but are not limited to: a. Contractor is to use extreme caution while driving vehicles inside park and on all pathways. Maximum speed on all park paths shall be 5 MPH. b. Plywood is to be placed over the path of travel if vehicles and equipment need to drive over lawns. c. Steel plates must be placed over the lids of irrigation valve boxes in the path of travel of vehicles and equipment. d. All tools and equipment shall be securely locked at the end of each work day. e. Storage and staging area is to be coordinated with Engineer and Park Staff prior to the start of construction. Any temporary street parking permits need to be reserved with MTA at least two weeks prior to the start of construction. The lawn areas along Haight Street are irrigated by 25 existing lawn sprinkler valves, which are operated by an existing “Hunter I-Core” controller. The lawn sprinklers are no longer operated by the controller, most likely because the wiring between the controller and the valves is damaged or missing. a. Install new 2-wire cables between the existing I-Core controller and the existing lawn sprinkler valves (Attachment 1, Figure 1). Route the new cables inside the existing conduits, removing the existing wiring if necessary. 2-wire cable shall be “Paige” 2-wire solid copper, Model #P7354D, or approved equal. b. Splicing of 2-wire cable is permitted inside the valve boxes only. Leave 24-inch coils of wire at each splice and leave 36-inch long expansion loops every 100 feet along wire runs. c. Replace the existing steel I-Core controller enclosure and concrete pad at the top of the Lyon St. stairs with a similar new steel enclosure and pad (see Attachment 1, Figure 3). The existing enclosure dimensions are 44 in. x 27 in. x 55 in. tall and the pad measures 50 in. x 30 in. Anchor new enclosure to existing concrete pad with stainless steel epoxied anchors. d. Test existing controller and sprinklers to the satisfaction of Park personnel. a. Install a new “Hunter Industries” Wireless Valve System (WVS) multi-station automated irrigation system with 16 battery-operated single-station node valve controllers (WVC Model #Node-100). Controllers shall be activated by handheld wireless valve programmers (WVP). Handheld programmers shall display controller battery life. (See Attachment 2, Figure 2). b. Install 16 new brass DC-latching solenoid irrigation valves by “Hunter Industries”, Model #IBV-201G-FS-DC-AS-ADJ. New irrigation valves are to be installed adjacent to manual valves, and shall have threaded unions to facilitate repair/ replacement. (See Attachment 2, Figure 3). c. Remove 16 existing manual ball valves and replace with new brass gate valves by “NIBCO”, Model #T1-8, threaded connection. (See Attachment 2, Figure 5). d. Remove and replace existing single-valve boxes with new valve boxes that can accommodate both a manual gate and an automatic irrigation valve. Remove 13 existing 16 inch x 24 inch x 12 inch deep typical valve boxes and 3 existing 24 inch square x 12 inch deep valve boxes (along Buena Vista East). Replace with 16 new “Oldcastle Precast” B24 concrete irrigation boxes with straight side walls and without lids (24 inches square x 12 inch deep), or approved equal. (See Attachment 2, Figure 4). e. Install 16 new steel locking valve box lids to fit within tops of the new irrigation valve boxes. Lids must be steel corrosion- and vandal-resistant “Lockjaw” utility box security lids manufactured by “Sipra Corporation”, or approved equal.