Erosion Control March/April 2017 : Page 18

wetland was installed with wetland sod, and a wide variety of shrubs that are native to the area were planted to create an underbrush area.” Bockey says 200 cottonwood poles “rather than ball and burlap” were sunk 10 feet along the banks. The species, she notes, is “native to our foothills and streambeds here.” Getting a Good Connection Drew Bartok of CDI Environmental Contractor, the contractor charged with implementing the project, says, “The work needed to be in four phases. We had to prioritize early on because the area was so unstable. We finished phase one in May of 2016 and the next seg-ments are now in the process of restora-tion, or in planning stages.” He adds that Piney Creek was “one of the better jobs we’ve ever done, primarily because all of the parties involved partnered so well together, and our efficiency of effort was stream-lined toward progress.” He says crews installed 10,000 yards of coir blankets; 20,000 square feet of wetland sod produced by North Fork Native Plants, a supplier in Idaho; about 10 acres of seeding with product from Granite Seed, using the species specified by THK; and 1,000 upland shrubs. “What we had to do was get good contact with the existing soil to ensure root establishment. Since most of the topsoil was gone, we had to create an environment conducive to revegetation, so we used biotic earth growing medium under the 20,000 square feet of wetland sod. This was the first step to stabilize the banks.” Bartok says the entire project used organic amend-ments supplied by Bowman Construction Supply including Biosol fertilizer and MycoApply mycorrhizal fungi. “These are great products that help establish healthy root systems and foster seed growth. Plus, since they are organic, the soil and aquifers are PHOTOS: CDI totally protected.” He adds, “A challenging aspect of the project was that we had to drill down 10 feet to install 18-foot-long cottonwood poles.” These dormant log cuttings will establish a root system to add to the bank stabilization efforts. DESIGNED not to be seen Systems Multi Strand Anchor For Surface Stabilization Williams Systems Include: • The most technologically advanced extrusion equipment for the manufacture of permanent and temporary anchors. • Strand Anchors are typically produced from 0.6" diameter, 7 wire strand [ f pu = 270 ksi, 1862 N/mm 2 ] meeting ASTM A416. • Anchors arrive to the jobsite fully fabricated and packaged in coils to allow for installation in areas where there are clearance issues or bench width constraints. • Williams C4.6 and C7.6 Wedge Plates (anchor heads) have been prequalified by Caltrans, with approval #40114a and #40114b respectively, for prestressed ground anchor construction. Williams Type B System Extruded Free Stress Length Typical Strand Anchor – PTI Class II Corrosion Protection: • The anchor system is manufactured in accordance with the Post-Tensioning Institute’s Recommendations for Prestressed Rock and Soil Anchor s. • Williams Strand Anchors are supplied with either PTI Class I or PTI Class II classification. • Landslide Mitigation • Temporary Excavation Support • Permanent Tieback Systems • Slope Surface Stabilization Applications: • Foundations • Dam Tie-Downs Williams Form Engineering Corp. has been a leader in manufacturing quality products for the customer service, for over 80 years. Belmont, MI 616.866.0815 San Diego, CA 858.320.0330 Golden, CO 303.216.9300 Lithia Springs, GA 770.949.8300 Portland, OR 503.285.4548 Collegeville, PA 610.489.0624 Kent, WA 253.854.2268 London, ON 515.659.9444 For More Information Visit: WWW.EROSIONCONTROL.COM 18 EROSION CONTROL

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