CONTRACT IN FORCE. Name of contractor: Standard American Dredging Co. Amount and character of work: To remove Centissima Rock, Bonita Channel, San Francisco Bay, Cal., to a depth of 40 feet at mean lower low water, involving the excavation of about 2,460 cubic yards, place measurement. Price: $61,500. Date of commencment: Preliminary work commenced March, 1914. Date of approval: February 26, 1914. Date of expiration: June 12, 1915. Date of completion: October 1, 1915. COMMERCIAL STATISTICS. Season of navigation, year 1915: Opened January 1; closed December 31. The above figures were obtained from the vessel register at the Merchants' Exchange, but numerous bay and river vessels and brages utilizing the waters of San Francisco Bay are not included therein. 1 Of this amount 1,370,603 tons, at an estimated valuation of $137,060,300, was carried on the ferries plying between San Francisco and Oakland, which ferries draw not to exceed 10 feet of water. In addition to the above,252,190 automobiles and 162,789 wagons and buggies were carried on the ferries plying between San Francisco and transbay points.. 2. REDWOOD CREEK, CAL. During the year a total of 96,303 cubic yards of material was dredged from the creek under contract, but only 63,819 cubic yards, at 6.48 cents per cubic yard, had to be paid for under the terms of the agreement. The contract cost of the above work was $4,135.47. APPROPRIATIONS. Total of appropriations prior to adoption of present project (see H. Doc. No. 1491, 63d Cong., 3d sess., p. 536). Present project: June 25, 1910. Mar. 4, 1913_ July 27, 1916_ Total___ June 30, 1908, unexpended balance returned to Treasury. Net total. $31,800.00 $12, 000, 00 3, 000, 00 10, 250.00 25, 250.00 57,050, 00 357.34 56, 692. 66 CONTRACTS IN FORCE. Name of contractor: San Francisco Bridge Co. Amount and character of work: To dredge about 65,000 cubic yards in Redwood Creek, Cal. Price: 6.48 cents per cubic yard. Date of approval: Emergency contract, not approved by the Chief of Engineers. Date of commencement: June 6, 1916. Date of expiration: July 6, 1916. Date of completion: June 4, 1916. COMMERCIAL STATISTICS. Season of navigation, year 1915: Opened January 1; closed December 31. At the beginning of the year work was in progress under contract. to widen the main channel to 500 feet and a depth of 30 feet along the Alameda shore between Webster Street drawbridge and the tidal basin, and also widen the 200-foot channel 25 feet deep within the tidal basin to a width of 300 feet for a distance of 2,700 feet. This work was completed on October 11, 1915, a total of 446,052 cubic yards having been removed during the year, at a contract price of 5.69 cents per cubic yard, amounting to $25,380.36. On November 4, 1915, work was commenced under a second contract widening the 200-foot channel 25 feet deep within the tidal basin to a width of 300 feet for a total distance of 3,100 feet of channel near the entrance to the tidal canal, and to dredge a channel 250 feet wide and 18 feet deep for a distance of 2,000 feet in the tidal canal and up to the Park Street drawbridge. This work was completed April 1, 1916, a total of 615,068 cubic yards having been excavated, at a contract price of 9.87 cents per cubic yard, amounting to $60,707.21. In May, 1916, a third contract was entered into to make a cut 100 feet wide and 25 feet deep and 6,450 feet long along the south side of the north channel in Brooklyn Basin, making a completed channel 300 feet wide and 25 feet deep. The contractor built levees around the middle ground within the tidal basin to form a dumping ground on which to deposit the spoils, but he had not commenced dredging at the end of the fiscal year under this contract. APPROPRIATIONS. Total of appropriations prior to adoption of present project (see H. Doc. 1491, 63d Cong., 3d sess., p. 510). $3, 433, 803..00 Amount and character of work: To dredge about 800,000 cubic yards of material from Oakland Harbor, Cal. Price: 5.69 cents per cubic yard. Date of approval: March 10, 1915. Date of commencement: April 21, 1915. Date of expiration: January 5, 1916. Date of completion: October 11, 1915. Name of contractor: San Francisco Bridge Co. Amount and character of work: To dredge about 520,000 cubic yards of material from Oakland Harbor, Cal. Price: 9.87 cents per cubic yard. Date of approval: October 13, 1915. Date of commencement: November 20, 1915. Date of expiration: October 20, 1917. Date of completion: April 1, 1916. Name of contractor: American Dredging Co. Amount and character of work: To dredge about 520,000 cubic yards of material from Oakland Harbor, Cal. Price: 7.23 cents per cubic yard. Date of approval: June 1, 1916. Date of commencement: July 8, 1916. Date of expiration: March 8, 1917. Percentage of completion: Dredging has not yet been commenced. Name of contractor: American Dredging Co. Amount and character of work: Removing wreck of the three-masted schooner Orient from Oakland Harbor, Cal. Price: $899. Date of approval: Emergency contract; not approved by the Chief of Engi neers. Date of commencement: May 27, 1916. Date of expiration: June 26, 1916. Percentage of completion: Work not commenced yet. COMMERCIAL STATISTICS. Season of navigation, year 1915: Opened January 1; closed December 31. Vessel classification. NOTE--38,991,664 passengers carried on ferry lines with terminals at Oakland. During the year this waterway was patrolled by the U. S. S. Suisun to prevent illegal dumping of material in navigable waters, encroachments upon the tidal prism by unauthorized reclamation work, violations of War Department special regulations regarding the use of fishing nets in these waters, and to supervise work done by private parties under War Department permits. Toward the end of the year a survey of the channel across Pinole Shoal was made to determine the extent of the shoaling at this time. Work on the seagoing hopper dredge San Pablo under contract at Baltimore, Md., was carried on throughout the year, and the dredge was completed and on June 26, 1916, sailed by way of the Panama Canal to this district for work on this project. APPROPRIATIONS. Total of appropriations prior to adoption of present project (see H. Doc. No. 1491, 63d Cong., 3d sess., p. 550) – Present project: $400,000.00 122, 000. 00 40, 000. 00 238,000.00 15, 000. 00 $353, 168. 41 22, 422.40 July 27, 1916. 105, 500,00 942, 922. 40 Total 1,296, 090. 81 |