Aids to navigation placed to restrict anchoring and transit over the tar removal area pilot cap, September 23, 2008. |
10/29: Project after completion. View of quarry spall where the tar was removed in the foreground, fringe cap nearshore and the railroad bridge in the background. Looking upriver. |
10/29: Project after completion. View of fringe cap (foreground) with the St. John's bridge in the background. Looking downriver. |
10/27: Placement of near shore "fringe cap" outside of tar deposit removal area. The fringe cap was placed to cover any disturbed tar materials as a temporary measure until broader site cleanup is conducted. |
10/26: View of GASCO site looking downriver; St. John's bridge is in the background. Darker section of shoreline is rock armor material. Rock is being placed over sand and the organoclay to minimize remaining tar material dissolution or erosion. |
10/25: Placement of sand on shore to armor remaining tar deposits that extend up into the riverbank. Looking downriver (St. John's bridge in the background). |
10/25: Armor placement on shore--bucket is about to drop material. Looking downriver. |
10/25: View of barge in foreground with sand and rock armor material for placement at the site. |
10/24: Cap after placement in the near shore area looking downriver. |
10/24: Cap after placement in the near shore area looking downriver. |
10/23: A diver assists in the placement of the mats and cover with sand cap material. Photo is looking upriver. |
10/23: Organoclay mats are placed near shore where seepage was observed to temporarily contain any free oils that come out of the sediments or uplands. |