2013-01-25_REPORT - M1992069

• Permit No: M1992069
• IBM Index Class Name: REPORT
• Doc Date: 1/25/2013
• Doc Name: ANNUAL FEE/REPORT
• From: OPERATOR
• To: DRMS
• Email Name: PSH
• Media Type: D
• Archive: No

1.6 Directions to Mitigation Site
The site is accessed by driving south from Denver, Colorado on either US Highway 85 or
Interstate 25 to US Highway 34. If traveling US Hwy. 85, proceed west on Hwy. 34 to 35
Avenue; if traveling I -25 proceed east on Hwy. 34 to 35 Avenue. Proceed north on 35
Avenue approximately 3.2 miles to F Street. Turn left/west onto F Street and proceed
approximately 1.3 miles to the site entrance. Turn right into the entrance gate to the site.
1.7 Dates of Compensatory Mitigation Commencement and /or Completion
Mitigation Area A and approximately 3.5 acres of the west end of mitigation Area B was
completed in 2002. Construction of approximately 2.4 acres of the wetland benches on the
east end of Area B was completed in 2004. Construction of Area C wetland benches
commenced in 2004, and as material stockpiles were depleted and miscellaneous equipment
was removed from this area, construction progressed to completion in 2007. In 2008,
additional backfilling and site grading was completed throughout the site. De- watering of the
site ceased on or about July 11, 2008, following completion of these reclamation activities.
Seeding and re- seeding of wetland vegetation in mitigation Areas B and C was completed
February 12, 2009, using the seeding recommendation of Walsh Environmental Scientists
and Engineers as set forth in the Wetland Area Seed Mix table below:
Wetland Area Seed Mix*
(
)
Scientific Name Common Name Percent
of Mix
Beckmannia syzigachne sloughgrass 9.8
Carex microptera popcorn sedge 4
Carex nebrascensis Nebraska sedge 0.5
Carex praegracilis meadow sedge 8
Eleocharis palustris creeping spikerush 6
E /ymus canadensis Canada wild rye 11.7
Glyceria striata fowl mannagrass 1.8
Juncus balticus Baltic rush 0.25
Juncus torreyi Torrey's rush 0.25
Panicum virgatum switchgrass 11.9
Scirpus maritimus alkali bulrush 12
Scirpus validus soft stem bulrush 10
Scirpus microcarpus small- fruited bulrush 5
Scirpus americanus Olney's threesquare bulrush 7.6
Spartina pectinata prairie cordgrass 8.4
Western Native Seed: High Plains Foothills Wet Meadow Mix
*Drill seed rate = 80 seeds /ft
Broadcast seed rate = 120 seeds /ft
Total PLS Ibs /acre per Western Native Seed = 11.349
Aggregate Industries -WCR 2
F Street Mine Site - 2011 Annual Report (File # 199280589)