MCDD projects

	Capital Projects for Multnomah County Drainage District No. 1
Future
	Levee Seepage Investigation

	City Canal Levee Improvements - These were joint projects with PEN 2: In 2007 the US Army Corps of Engineers (USE), as part of its contract with the District to inspect the levees for recertification, Determined that the cross levees on either side of the Peninsula Canal were deficient. The USACE said trees had to be removed in order for the levee to be eligible for recertification. MCDD and PEN 2, which share the cross levee agreed to remove trees on the East side (485) as opposed to the West side (1500) and get the east levee recertified. In the fall of 2007 trees and root wads were removed during the month of August and the levee was roughly shaped with a maintenance bench and then hydro-seeded before the winter months arrived. Some trees, at the direction of the Oregon Department of Fish and Wildlife, were placed into the slough for use as turtle habitat. The original $165,000 contract will be followed in 2008 by District crews to complete the project. The additional cost in FY 2008-2009 will be a total of $50,000, shared between the Districts. (On-going)

	NE Marine Dr. Levee Resurfacing - Resurfacing the Levee. The Marine Drive levee from the 42nd Street boat launch to 185th needs to have its landward face resurfaced with a fresh overlay of dirt. The levee is built of sand with an overlay of soil into which grass is seeded. Over the years the soil overlay have been eroded by some vehicle and pedestrian traffic, but mostly by the winds that blow down the gorge from the east. In 2007, the first section beginning at the boat launch was stripped of vegetation and a soil overlay put into place and hydro-seeded. As funds are available, the project will continue heading east each year until it is completed. (On-going)

	Investigate Levee Toe Drains

	SW Quad Conveyance System

	Lower Columbia Slough Levee Improvement

	Columbia River Levee Bench Improvement 122nd to I-205

	Trash Raking Systems for Secondary Pump Stations

	Implement Culvert Replacement Plan

	Coordinate with Utilities to get a Secondary power grid to Pump Station

	NE 223rd Columbia River Levee Relocation

	Catullus Wetlands. Coordinating with the landowner, the City of Portland, the District is helping renovate these wetlands for maximum environmental advantage. They are located at about 170th and Airport Way and cover 35 acres. (On-going)

Completed:

	NE 33rd Base Floodplain Elevation (BFE). The area adjacent to 33rd Avenue has been reclassified with its own sub-basin BFE. The BFE for MCDD is 14 feet NGVD, which means that any structure must have a finished floor at 15 ft NGVD if it is to be permitted. The 33rd area, at the request of the City of Portland, has undergone refiguring and the BFE has been reduced to 10 feet NGVD. This will allow some buildings that could not otherwise be located there. The BFE is the height at which the drainage district must certify to FEMA that the water elevation will not get above. Phase 1 - completed Phase two (On-going)

	USACE 1135 Project. Some $50,000 is expected to be available from the US Army Corps of Engineers in 2008 to complete the project of dredging the slough to create benches and islands upon which emerging wetland plant can be placed. Plans are being negotiated to remove the defunct Colwood Golf Course Bridge from the slough adjacent to Cornfoot Road so the last bit of dredging can be completed. Main Project completed - Maintenance is (On-going)

	Sleeving the 142nd Street Pipe. One of the pipes that go under the 162nd Street cross levee had partially separated causing soil above it to be sucked in and distributed downstream. In 2007, divers went in to find the problem and proceeded to install an HDP sleeve and grout around it. This was much less expensive that the alternatives. In 2008, the debris was removed from 2nd pipe and new grates were installed in front of both pipes.

	223rd Cross Levee. The USACE observed during their certification evaluation that a pond had developed at the toe of the cross levee. The District, working with the contractors at Townsend Farms development just a half-mile away, and the City of Fairview, permitted a total of 14,000 cubic yards of soil to be placed in the low spot. It has been regraded and hydro-seeded to finish the project. The District cost was about $2,500.00 Now NACCO Material Handling, the property owner, can proceed with installing a fence to keep recreational vehicles off the levee and their property.