Specifications include, but are not limited to: MOBILIZATION o Plywood or other protective decking should be used wherever possible to avoid major disturbance of existing turf, and cart paths. EROSION CONTROL o Few areas will require erosion control. If required - Type A silt fence will be used to minimize the amount of erosion and silt runoff that may occur as result of construction. DEMOLITION o All existing bunkers will be renovated, replaced, or removed. Some green surround features may also need modification to remove sand build up. Demolition includes cleaning out all existing contaminated sand, material, gravel and drainage tile to reach the original hard pan layer. Where soil material prevents proper foundation preparation at the proposed elevation, the Bidder shall deepen excavation to level that proper foundation can be prepared. Grass, sand, or soil materials will be removed and disposed of on site or repurposed by the golf course. No off-site disposal will be needed. EARTHWORK o Topography changes may be warranted and will be discussed during site visits to accurately predict amount of grading work to be performed. The majority of this work will come from installation of new bunkers and the removal of others. SHAPING o Shaping will include all golf course features as per discussed plans under direction of Golf Course Superintendent. re-contouring bunker surrounds and stripping out significant quantities of sand accumulation, is essential to provide a good foundation for the new turf. The perimeter area around the bunker will not channel excessive water into the bunker area, water flow into the bunker should be minimized as much as possible. The floor of the bunkers’ slopes must be equal to or less than the 100% angle of repose of approved sand. These floors must be smooth, compacted and properly sloped to achieve excellent drainage. Bidder is to ensure concave shaping the subgrade cavity with a 3- to 5-percent slope in flatter areas to a single low spot. Consideration is to be given to entry/exit point for power equipment such as a Sandpro during shaping process. We aim to maximize area around bunker that can be maintained with mowing equipment. DRAINAGE o Inlets will be constructed using risers, or corrugated polyethylene pipe set vertically, with a concrete base. Pipe within riser should be packed and surrounded with pea gravel 12 inches below the finished grade. drain line should be extended 12 inches above the finished grade and coned with gravel to eliminate contamination. When finishing begins, the pipe is cut off flush, and the disturbed area around the inlet will be sodded. All riser pipes shall have metal grates to cap the tops. o Each bunker system is to be drained with drainage trenches in a herringbone pattern throughout the bunkers as to provide exceptional drainage. o French drains may be necessary in various locations to accommodate outflow pipe disposal or to make tie-ins with existing drainage. These drains will utilize 4” perforated pipe and run laterally across the fairway before connecting into other drainage structures. Trenches will be 8” wide by 12” deep, filled with pea gravel and topped with river sand. o 2”x2” wood frames that are 2’ wide and 2’ long shall be installed at lowest point of bunker before liner is installed in preparation for sand vault/wash box. o Bidder is responsible for ensuring outfall pipe exiting the bunker cavity is not restricted and functioning properly to allow the bunker cavity to drain. This will in many instances consist of installing new outfall drains to locations approved by golf course superintendent. outlet pipe must be laid with enough slope to be self-cleansing to avoid clogging. o PIPE Corrugated Polyethylene Pipe (ADS N-12). All pipes shall have smooth interior walls o Replacing failing corrugated metal pipes that can be used for bunker outflows should be included in drainage pricing. These drains will be designated during the on-site visit. BUNKER CONSTRUCTION o Bunker construction includes 4” perforated piping and gravel within the bunker trenches o Installation of Capillary Concrete liners to specifications indicated by manufacturer with sand vaults and Capillary Wash Boxes. o 6” of Tour Angle bunker sand installed and compacted to a depth of 4”. o Sand should be installed immediately after curing and the water test. A thicker perimeter layer of sand should be installed to reduce soil contamination prior to sod placement. o Flush-outs will be located on the upper end of the bunker and the non-perforated outfall line locations will be decided and discussed with golf course superintendent. Bunkers should be prepared for a turf edge to be grown into bunker sand. IRRIGATION LABOR o Work will be performed around an existing irrigation system; however, for the purpose of pricing, we will plan on disturbing five runs, including heads, piping and wiring. FINISHING o The overall construction process is so disruptive, that it becomes necessary to partially reshape all disturbed areas. The final shapes of the putting surfaces, bunkers, and catch basins must blend with the existing grades to tie the golf course together. The finishing process also prepares the ground for turf by producing a proper planting bed. GRASSING/EDGING o Sodding shall be done with certified Tifway-419 Bermuda grass. The objective is to simplify edge maintenance and reduce contamination by installing a turf edge to be grown into the bunker sand and maintained in the bunker sand. Sod should be rolled over the face to cover soil. o After sod establishment, any contaminated sand around the perimeter must be removed. o Any new turf will be the responsibility of the bidder until it is established. Provide a detailed project cost estimate. Work in conjunction with the Golf Course Superintendent to provide a course construction-sequencing plan to include any course or hole closures that may occur during construction. It is the overall intention to keep the golf course open for play during construction and limit the number of holes under construction at once. Contractor should be aware that work is only to take place Monday-Friday of each week. Warranty Phase o City expects a 12-month warranty period materials and labor o Coordinate and monitor the resolution of remaining “punch list” items as determined by Golf Course Superintendent. o Coordinate, monitor, and resolve all warranty issues to the satisfaction of the City during the oneyear general warranty period and as extended.
