Dock Modifications for a Concrete Channel to Carry the Underwater Cable

	The proposed location of the cable entry to the water from the island is represented above. Construction in the intertidal area occurred during mid-May to mid-June in a location where there is already extensive human-created infrastructure, and where there was no impact to nesting birds. It also enabled us to provide needed repair of the dock structure Pam Thuringer of Archipelago Marine did a survey of the area at low tide on May 12. She found no rare or significant species in the area that will not recover in a short period afterwards. Link to her species list here. A further advantage of this proposal is that we would require that the west wall of the jetty would re-enforced with concrete in order to repair some of the undermining of the jetty. In some areas this has gone in as far as 60 to 80 centimeters. That part of this erosion of the jetty could be the result of it not being fully filled in with new concrete when the jetty was partly rebuilt in 1986. It looks very much like the older exposed loose concrete and fill was the part that has eroded. The dock was constructed sometime pre-1950 on a rock finger projecting seaward. Roma Construction was contracted for the above water portion of the job. This job consists of two parts: Part a) Consists of work begun in May, in order to take advantage of the sets of low tides during the daytime. Removal of the surface coating of algae and sessile invertebrates was done only in the area of the new concrete addition. No chemicals were used in the cleaning process as a directed water jet was adequate. The dock was repaired along the side in the process, with holes and unstable portions filled in. Concrete was made on site from materials transported to the island. Any debris created during the process was hauled off the island for disposal. Part b) Laying of the conduit along and embedded in the sidewalk where necessary for the span from the engine room to the docks. The pictures represent this route. Below is a set of pictures taken in May 2005 before the installation of the concrete channel with a magenta line representing the proposed route of the cable beside the docks and up to the engine room/ storage battery area.
		End of dock taken at a .2 m tidal level End of dock taken at a 1 meter tide A channel will be cut through the stairs
		View from the engineroom where the storage batteries will be housed The route of the internet conduit also passes through this section of pathway. This part of the route will be under the boat launch tracks. A view of the entire west side of the docks- 1 meter tide level before the concrete channel was installed.
		Opening a channel through the stairs I
		. A barge with a bobcat delivers the sand for the concrete
		Forms were constructed at low tides
		. Forms are removed on lower sections
		Crew from ROMA construction mixing concrete Final pour of concrete on the upper end of the dock. The completed concrete channel for the conduit
		Return to the Schedule and Log Index for various phases of the Project. PEARSON COLLEGE – ENCANA – CLEAN CURRENT TIDAL POWER DEMONSTRATION PROJECT AT RACE ROCKS Return to: Launch of the Project at Pearson College,
		Copyright Lester B.Pearson College Thanks to Mike and Carol Slater for the photos of the daily updates Photos assembled by Garry Fletcher