2018-07-30_REPORT - M1974086

• Permit No: M1974086
• IBM Index Class Name: REPORT
• Doc Date: 7/30/2018
• Doc Name Note: Slide Response Report
• From: APC
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

71,
14802 W 44`�'Avenue
Golden,Colorado 80403
Office: 303-279-661 1
Fax: [phone]
www.apc.us.com
The Sign of Quality
July 30, 2018
Department of Natural Resources
Division of Reclamation, Mining and Safety
1313 Sherman Street, Room 215
Denver, CO 80203
RE: Status Report; APC Construction Co — Ralston Quarry
On Monday July 23"', APC received a certified letter from Division of Reclamation, Mining and
Safety. The letter contained two citations and a description based on Mr. Scott's understanding of the
situation. We are working on a response to provide the Mine Land Reclamation Board prior to the
hearing.
Based on the recommendation of Ground Engineering on Monday, the 23 d we started to move some
additional loose material in the upper portion of the slide area. The operation consisted of several
days of dozing lose material down to native ground and then picking it up with scrapers and moving
it out of the slide area. During this week we had a number of rain falls so we have noted increased
water activity in our potholes and trenches and some settling of existing material in the slide area. We
expect this grading operation to be complete by Friday, July 27th.
On Thursday, July 26`', Ground Engineering sent a geologist to the site. Ground's first visit included
two professional engineers that reviewed the site. This visit was for additional site monitoring,
evaluation of the additional grading work, and putting a plan in place for drilling locations. Ground
engineering is scheduling the drilling which may be accomplished during the week of July 30`"
Ground engineering has estimated that their report and recommendations will be available in
approximately three weeks.
Thanks,
ki e. qez,�
Stanley C. Opperman
Vice President—Operations
APC Construction Co., LLC
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