Specifications include, but are not limited to: The City of Ukiah is soliciting bids to deep scarify (rip) - and cross scarify - three percolation ponds at the Wastewater Treatment Plant. The Contractor will be responsible for providing all labor, materials and equipment, including any and all incidentals, necessary for the completion of the work. Pond #1 (Middle Pond) and Pond #3 (North Pond) would be completed first. With Pond #2 (South Pond) to be completed at a later date, when dry. Bids will be for all 3 ponds but will be separate line items. • See Attachment A for pond locations. Size of each Pond us approximately 1850 feet long by 352.5 feet wide (dimensions average, as each pond isn’t exactly rectangular) The Contractor shall utilize ripping tip extensions, on their equipment, that are specifically designed for the deep penetration scarifying of the percolation ponds. In order to ensure effective percolation, the deep scarification shall penetrate the bottom soils of the pond at a range no less than 40 inches below the top surface of the subject soils. Each pass needs to overlap one-half the width of the previous pass. Cross scarifying to be at approximately 90 degrees to the long previous passes. The Contractor is to conduct the work in such a way to keep the dust to a minimum and shall take any measures required by the local Air Quality Management authorities to control fugitive dust. On a daily basis, the Contractor shall keep the site of work and adjacent premises safe and as free from material, debris, and rubbish as practical. Contractor shall confine equipment operation to the pond bottom, access the ponds only at designated point(s), and avoid damage to levee slopes.
