Hilltop Burn Dump Revegetation Project

Funds awarded:
$150,811

Project date:
2003-2004

Sponsor:
Wildlife Conservation Board

Project Description:
The Hilltop Burn Dump mitigation/construction was originally finished in May of 2000. Native vegetation did not establish properly on the slopes, and this project sought to remedy that situation. We proposed to vegetate the steep, dry slopes with native plant species to inhibit erosion and enhance the aesthetic qualities of the area. Benefits of this design include rest areas and shade along the trail.

SWAG used three different treatment types for this project. The wetter areas on the site received Treatment Type 1; intensive planting of cottonwoods, Oregon Ash, California Sycamores, native grasses and willows. These areas are at the bottom of the switchbacks, where the stream is, and the depressional areas at the top of the slope near Hilltop Drive. The area that received Type 1 Treatment is approximated at 3.3 acres.

Type 2 was used to treat the steep slopes that extend upslope from the trail approximately 100 feet. These slopes are intended to be native perennial grasses. These areas were composted using a compost blower truck, and seeded with mycorrhizae-coated native seed. The area treated in this manner is approximated at 5.4 acres.

The remaining areas received Type 3 Treatment. SWAG amended soil in 40’ x 50’ ovals. These ‘microsites’ were roughly spaced every thirty or forty feet and were constructed by excavating 6” of existing soil and mixing in 10% by volume of compost. The areas were subsequently be seeded with mycorrhizae-coated native seed, covered with 2” of compost, and mulched with native-straw. In each ‘microsite’, there were 4 holes planted with acorns (4 acorns per hole), and two holes with container plants. The total area treated in this manner is about three (3) acres.

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Before Construction (Feb 04)	After Construction (Nov 04)