2010-06-15_REVISION - M2001017

• Permit No: M2001017
• IBM Index Class Name: REVISION
• Doc Date: 6/15/2010
• Doc Name: Submittal
• From: L.G. Everist, Inc.
• To: DRMS
• Type & Sequence: TR1
• Media Type: D
• Archive: No

IXOI/
L.G. EVERIST, INC.

June 11, 2010
CORPORATE OFFICE
300 S. PHILLIPS AVE. - SUITE 200
P.O. BOX 5829
SIOUX FALLS, SD 57117-5829
PHONE [phone]
FAX [phone]
MOUNTAIN DIVISION
7321 E. 88TH AVENUE • SUITE 200
HENDERSON, COLORADO 80640
303-287-9606
FAX [phone]
REICLEVED
JUN 15 ?U10
Mr. Eric Scott
Environmental Protection Specialist Division of Reclamation,
Division of Reclamation, Mining and Safety Mining & Safety
1313 Sherman St., Room 215
Denver, Colorado 80203
RE: Lohmann Sand & Gravel, M-2001-017 - Technical Revision to revise reclamation of
French property (lining method and configuration)
Dear Eric,
L.G. Everist, Inc. requests a Technical Revision to update and revise the reclamation plan of the French
property of the Lohmann Sand and Gravel mine, DRMS Permit M-2001-017. This Technical Revision
addresses the change of lining method (from slurry wall to clay liner) and final configuration of the water
storage on the French property. Please note that "clay liner" includes earthen materials such as
compacted to The Technical Revision fee of $216.00 is enclosed.
Lining Method - revise from slurry wall to clay liner
The reclamation plan in the original application and subsequently approved for this permit specified that
the northern part of the Lohmann property would be lined with a clay liner and the French property would
be lined with a slurry wall. The French property has been lined with a clay liner, rather than the proposed
slurry wall. L.G. Everist is submitting this Technical Revision to change the lining method of the French
property from slurry wall to clay liner.
In a July 6, 2001 letter from L.G. Everist to the Division, L.G. Everist committed to providing:
(a) "construction quality assurance report and engineer's certification within 90 days after the completion
of the slurry wall"
The clay liner in the French property was approved and certified by the Colorado Division of Water
Resources, Office of the State Engineer (SEO), in a letter dated January 5, 2009. The leak testing and
construction quality assurance of the liner was conducted by Deere & Ault Consultants, Inc. They sent a
leak testing proposal letter in October 2009 and then submitted the final report to the SEO in January
2009, showing that the French liner had passed the more stringent "design" standard of the State
Engineer's guidelines on lined gravel pit reservoirs. Copies of the State Engineer's approval letter, Deere
& Ault's final report, and Deere & Ault's testing proposal letter are attached to fulfill this commitment.
(b) information in each annual report on "the clay liner installation progress and summary of any ongoing
construction quality results. "
L.G. Everist has been reporting on any reclamation progress, including sloping and liner installation, for
both the Lohmann and French properties in annual reports - in very general terms. To fulfill commitment
(b) more completely, we will submit any "construction quality results" associated with the installation of the
clay liner on the Lohmann property in all applicable future annual reports.
LOH-DRMS-TR-French RevRec-toES-J un2010.doc