REP43190

• Permit No: M1977211
• IBM Index Class Name: Report
• Doc Date: 5/27/1999
• Doc Name: ANNUAL REPORT
• Permit Index Doc Type: ANNUAL FEE / REPORT
• Media Type: D
• Archive: No

• Three areas were affected. There were a number of small slumpong the access road leading
` into the quarry. There was also a slump of a reclaimed area on the south end of the quarry. But the
major damage was a huge mudslide and slope failure of a fill slope above the roadway leading from the
office to the quazry. Many hundreds of cubic yards of fill became saturated due to accumulation of
water in the plant area. This basically liquefied the fill material causing it to flow across the road.
No damages outside the permit azea occurred as all of the mud flow was contained within
existing sediment control structures. However, it took many days to remove the material. The
material was deposited on the salt dome structure to be used by the City of Colorado Springs. That
structure is essentially completed now rather than seeing a slow expansion over the next few years.
Interestingly, slopes highly similar to the one that failed showed no effects from the storm.
The failure was due co a localized topographic configuration behind the slope which caused extensive
seepage into the slope. Other slopes that showed no effects had much better drainage.
This entire area will need to be repaired in the future, but due to continued seepage and high
levels of moisture in the non-failed slope areas no repair can be done until the entire slope dries out
more. When repair is effected a different drainage pattern will be established behind the slope so a
repeat event will not occur.
1996/97 Reclamation
(Wording same as 1998 report): Reclamation during the past yeaz has concentrated on
revegetation work on the new mining azeas. If the reclamation azea on Map 2 is compared with the
Mining area on Map 1 the considerable overlap is evident. This is the result of using the new approach
to reclamation of benches, that is, immediate backfilling and topsoiling of benches as they are
completed. Although, as expected, bench collapse is still occurring, the effects of those events on
reclamation aze minimal. This is because the ingredients for reclamation aze already in place when the
collapse occurs and repair occurs rapidly. In effect, the progress of the reclamation and the quality of
that reclamation is very nearly as expected and described in the last amendment for this operation.
A total of 6.6 acres of reclamation was done at this quazry in the last year, about the same
amount as was done in the previous year. All of this involved reclamation of actual quarried land
rather than land in the support area as has occurred in the past. As benches are completed, fill and soil
is placed on the benches. Late in the permit year the CMRF planted Douglas Fir seedlings throughout
the newly reclaimed area except on the benches. Nearly all of the seedlings planted in the last year
were part of the Enhanced Reclamation with only a very small number attributable to requirements
under Base Reclamation. Seeding of the newly reclaimed land occurred just prior to tree planting to
avoid adverse impacts of trampling on seedlings and to allow trampling to further bury the seed.
UPDATE 1999: No additional reclamation was implemented in the last yeaz as no
land was available to be reclaimed.
1999/2000 Affected Land
It is not expected that during the next year any additional land will be disturbed. Mining is
proceeding down the slope below Peak N3 and is slowly extending in the direction of the south end of
the quarry. Mining in the south area of the quarry has begun but is mostly preparatory rather than
productive. A yellowish colored limestone that is marginally good for concrete aggregate is being
marketed for landscape purposes. This reduces the amount of poor quality rock that must be
stockpiled. Areas to be mined in the next year will be similar to those mined in the previous year.
Annual Report Pikeview Quarry 98/99 M-77-211 Page 2