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PERMFILE100793
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PERMFILE100793
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Entry Properties
Last modified
8/24/2016 9:55:21 PM
Creation date
11/24/2007 7:21:02 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1993041
IBM Index Class Name
Permit File
Doc Date
9/12/1997
Doc Name
SOUTHDOWN INC ROCKRIDGE QUARRY AT DOWE FLATS 3 YEAR COMPLIANCE REVIEW
Media Type
D
Archive
No
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<br />Maximum Acreage of Disturbance <br />The Special Use Permit limited the area that could be disturbed by <br />mining and reclamation at any one time to a maximum of 120 acres. <br />Once 120 acres of land has been disturbed, revegetation must <br />commence before additional acreage can be disturbed. Currently, <br />less than 60 acres has been disturbed (as measured from very <br />recent air photos and field inspections). This area will increase over <br />the next 3 years to the maximum acreage allowed. At this point the <br />operation will reach steady state and mining activity will advance <br />northward at a pace of about 300 feet per year. <br />Berming~eauirements <br />Screening berms were required along the relocated County Road 47 <br />to minimize the views of the mining operation. The initial segment of <br />the berm has been constructed at the south end of County Road 47 <br />and it adequately blocks views of the current mining activity. The <br />berm is currently being extended further north. Further extensions <br />will continue over time as mining advances to the north. <br />Several additional screening berms are being constructed along the <br />southern boundary of the mine near the new County Road and our <br />neighbors along Highway 66. These berms are an attempt at sight <br />and noise abatement. All should be completed this fall and should <br />be planted before the Spring rain. <br />Currrent Orzerations <br />The major conveyor construction work was completed in early June. <br />From that time until mid-August, only small volumes of rock were <br />crushed and transported due to numerous electrical and mechanical <br />problems with the system. Full operation commenced during the <br />week of August 18, 1997. Since that time, about 6500 tons of rock <br />has been being crushed and transported each scheduled operating <br />day (a total about 45,000 tons for the month). As of the beginning of <br />September, it appears that we are entering steady-state condition <br />with this system. It is anticipated that we will operate the system for <br />8 to 10 hours per day, 4 or 5 days per week (Monday-Thursday or <br />Friday). <br />Road Relocations and Vacations <br />County Road 47 <br />The Special Use Permit allowed relocation of portions of County <br />Road 47 in Dowe Flats. The relocation and a required trail corridor <br />were dedicated to Boulder County in January, 1995. The abandoned <br />portion of County Road 47 has been vacated by the County and now <br />runs through the center of the active quarry. <br />a <br />
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