The following estimate is based on using the draft tube gate guides for the trashracks. A trashrack in three sections would be provided for each opening. The racks would be stored in an enlarged slot over each opening and would be placed in the draft tube openings each time the units are pumping. Interest during construction is estimated to be $900.000 which added to the construction first cost would give a total added investment cost of $12,880.000. The yearly added cost of operation, maintenance, and replacements for one 50-unit tidal powerhouse is estimated to be $62,350. Automatic lifting and lowering devices for trashracks would be investigated during the design stage of the project. Further investigation of riparian damages would also be necessary if reverse pumping maintains a high elevation upper pool and a low elevation lower pool for a period of one to several days. since holding of water levels might affect daily business activities. SUPPLEMENT TO JULY 1963 REPORT THE INTERNATIONAL PASSAMAQUODDY TIDAL POWER PROJECT AND UPPER ST. JOHN RIVER HYDROELECTRIC POWER DEVELOPMENT 1. Tidal power development, general plan, Eastport, Maine. 2. Tidal power development, powerhouse, general plan, typical main unit bay. 3. Tidal power development, powerhouse general arrangement. 4. Tidal power development, powerhouse No. 2, plan and record of explorations. 5. Dickey and Lincoln School, reservoir map. 6. Dickey development, general plan. 7. Dickey development, embankment-spillway-intake, profile and sections. 8. Dickey development, powerhouse-dam-spillway, plan and sections. 9. Lincoln School development, powerhouse-dam-spillway, plan and sections. 10. Dickey and Lincoln School, hydrology. 11. Dickey development, plan of explorations. 12. Dickey development, Dickey Dam-Falls Brook dike, geologic sections. 13. Dickey development, upper damsite, geologic sections. 14. Dickey development, record of foundation explorations. 45 46 230 KV 3 5 U.S. ARMY ENGINEER DIVISION. NEW ENGLAND WALTHAM, HASS THE INTERNATIONAL PASSAMAQUODDY TIDAL POWER PROJECT UPPER SAINT JOHN RIVER HYDROELECTRIC POWER DEVELOPMENT TIDAL POWER DEVELOPMENT POWERHOUSE APPROVAL RECOMMENDED APPROVED です SCALE AS SHOWN 7 |