Erosion Control Measures Implemented To Date


• 1,110 acres were planted to corn in the spring of 2006 to change the rotation and break up larger fields in the northwestern portion of the South Farm.
• 50 acres of non-farmable terraces have been installed on the South Farm through a cooperative agreement with the Agate Conservation District.
• Residue retention was enhanced through modified chemical fallow on approximately 12,000 acres throughout the Farm.
• 12 diversion structures have been repaired on the South Farm in cooperation with the Agate Conservation District from 2004 through 2006.
• Through a cooperative effort between the Deer Trail Conservation District, the Natural Resource Conservation Service (Byers office), and the Metro District, 31,276 linear feet of farmable terraces were installed on the Central Farm to help prevent water erosion in the fall of 2005.

Table 3: Seed Mixture
Kind & Variety	% of Mix
Western Wheatgrass, Arriba	19
Sideoats Grama, El Reno	17
Prairie Sandreed, Goshen	15
Smooth Brome, Lincoln	15
Thickspike Wheatgrass, Critana	14
Hybrid Wheatgrass, New hybrid	10
Russian Wild Rye, Swift	10

Erosion Control Measures Planned


• Evaluate the possibility of constructing additional farmable terraces on the North Farm in cooperation with Arapahoe County Natural Resource Conservation Service and Deer Trail Conservation District.
• Continue cooperative agreements in 2007 with Agate Conservation District to repair damaged check dams/diversion structures throughout the South Farm property.
• Assess feasibility of breaking larger fields into smaller ones on the South Farm property.
• Grass seed was ordered to continue establishing back to grass areas on both the Central and South Farm properties. A total of 800 acres of additional back to grass area is planned for planting in the summer of 2007. An additional 800 acres will be planted in 2008.

Management Practices and Maintenance


• Clean out sediment that accumulates in the existing check dams/diversion structures.
• Repair check dams/diversion structures on the Farm as needed in cooperation with Agate and Deer Trail Conservation Districts.
• Continue to reclaim the cultivated areas. These are cropped areas that biosolids are applied to then returned to native grass. The reclaimed areas have struggled to become well established due to lack of moisture.

Special Concerns and Management Approach 2006-2007


• Staging areas, the part of the field used to transfer biosolids from road (transport) to agriculture (spreading) units, have also been used for equipment maintenance and repairs. As a result of these activities, staging areas suffer both stubble loss and compaction. Procedures and training of District staff to minimize the impact in staging areas are in place.
• The Terragator, a modified manure spreader and one type of equipment used to distribute biosolids, can cause soil compaction and stubble loss. During 2005 some of the compacted tire-track areas were tilled with a sub-soil implement. A six-wheeled Volvo side discharge unit (pictured at right) is also in operation. The six wheels help to distribute weight and reduce compaction in the field.