Alcatraz site
Named in the records1972–1990
28 records of San Francisco tie this place, 1972–1990: 0 decisions of the Board of Supervisors and 28 facts read from city reports. Open the full list, with filters for years, kind and outcome.
- Kind
- Named in the records
- Records
- 28: 0 Board decisions, 28 facts from city reports
- Years
- 1972–1990
What the records say
All 28 records, in date order. The one-line summaries were written by a language model from the printed page; open the page to check the wording.
| When | What the record says | Outcome | Source |
|---|---|---|---|
| 1972 | Hunters Point Naval Shipyard · other: 430,000 yd3 disposed at the Alcatraz site | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1982 | Alcatraz disposal site · finding: USCOE determined enough material had accumulated to pose a hazard to navigation | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: Total dredged sediment discharged at Alcatraz site, 4.736 million yd3 | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · finding: Average disposal volumes at Alcatraz stated on page 194 are incorrect | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: 65% of material dredged disposed at Alcatraz site (1986-1987 average) | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: About half of navigation projects using the Alcatraz site disposed 100,000 cubic yards or less annually | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: Ten or more disposal events occurred on 32.5% of the days | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: No disposal activity on 23.7% of the days; data missing for 7.1% of days | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: Distribution of dredging projects disposing at the site, by size class and total volume, 1986-1987 | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1986 | Alcatraz disposal site · other: average dredged material disposal 2.2 million cubic yards per year in 1986-87 | action | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1987 | Alcatraz Disposal Site · other: SAIC 1987b side-scan sonar study tracked dispersion of disposed dredged material | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1987 | Alcatraz disposal site · finding: Suspended solids in lower water column 44 to 165 mg/L | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1987 | Alcatraz disposal site · finding: Plumes migrated with the tide at rates up to 140 cm/s during maximum ebb and flood disposal | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1987 | Alcatraz disposal site · finding: Suspended solids in plumes during initial dispersion of disposed sediments similar to ~50 mg/L plume concentrations | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1987 | Alcatraz disposal site · other: Total dredged sediment discharged at Alcatraz site, 4.720 million yd3 | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1987 | Alcatraz disposal site · finding: Plumes dissipated usually within 10 to 15 minutes after disposal | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1989 | Alcatraz disposal site · other: monthly disposal limit of 0.3 million yd3 during recreational fishing season (May through September) | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1989 | Alcatraz disposal site · other: monthly disposal of 1.0 million yd3 for remainder of year (proposed comparison limit) | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · finding: losses of dredged material by burial at the Alcatraz site assumed to be 20% of total amounts dredged and disposed in any one year | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · other: slurrying requirement onset referenced vaguely | site | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · other: Time limit on disposal of new-work dredged material adopted by SFBRWQCB | measure | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · other: 41 disposal events on a single day | event | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · other: USCOE dredged the site on five occasions, removing about 183,000 yd3 (140,000 m3) of material | action | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · finding: approximately 12% of disposed Richmond Channel material remained at the Alcatraz site | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site slurrying requirement · other: slurrying requirement for dredged material disposal did not begin until September 1987 | action | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · other: mound on eastern side risen to -8.5 m (-28 ft) at MLLW from original depth of 36.5 m (120 ft) | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · finding: approximately 77,500 yd3 of disposed material remained at the disposal site | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
| 1990 | Alcatraz disposal site · finding: about 40% of sediments dredged from San Rafael Channel remained at the Alcatraz site | finding | City report: Status and trends report on dredging and waterway modification in the San Francisco Estuary scanned page ↗ |
All 28 records, with filters · this place's data as JSON · release v0.7.1 · CC0 1.0