Site work for a water / sewer project in New Haven, Connecticut. Working plans call for site work for a water / sewer project.

Improvement dredging of the New Haven Harbor Federal Navigation Project consisting of mechanically dredging the existing navigation channel and turning basin from the current authorized depth of -35 feet to a newly authorized depth of -40 feet below mean lower low water (MLLW), including expansion of channel limits. The work includes widening the entrance channel to 600 feet, the bend through the breakwaters to 800 feet, and the main channel between the breakwaters and terminals to 500 feet. The project requires removal of up to approximately 3,500,000 cubic yards of fine-grained silt and organic material, 850,000 cubic yards of medium-to-fine grained sand, and 60,000 cubic yards of rock. Rock removal may require blasting or other pre-treatment methods and shall be dredged to a minimum elevation of -42 feet MLLW with a 2-foot allowable overdepth, while all other areas shall be dredged to -40 feet MLLW with a 2-foot allowable overdepth. Mechanically dredged material shall be placed into scows for transport and disposal, with material placed at the Central Long Island Sound Disposal Site as the primary placement location and up to four additional in-harbor sites for beneficial use. Access to beneficial use sites may require scow transfers in shallow water depths. Dredging and disposal operations are anticipated to occur over two dredging seasons and must meet environmental time-of-year restrictions. The contractor is expected to achieve a minimum production rate of 300,000 cubic yards per 30 consecutive calendar days to complete the work within the allowable dredging windows. The estimated construction cost is between $50,000,000.00 and $100,000,000.00. The Method of Contractor Selection has not been determined at this Time. *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document.