PERMFILE72146

• Permit No: M2000158
• IBM Index Class Name: Permit File
• Doc Date: 3/30/2001
• Doc Name: Changes to First Adequacy Response
• From: ENVIRONMENT INC
• To: DMG
• Media Type: D
• Archive: No

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Er~vir~r~n?er~~, Ir~c.
LARRY E. O'BRIAN 7985 VANCE DRIVE, SUITE 205A
FOUNDER ARVADA,COLORADO 80003
303.423-7297
FAX [phone]
March 30, 2001 RECE~vEp
Ms. Erica Crosby MAR 3 p 2001
Division of Minerals and Geology ~e°I°gY
1313 Sherman St. , #215 °fM1°e~a~saPd
Denver, CO 80215 D1a1s~°°
Dear Erica;
RE: Platte Sand & Gravel LLC
S&H Mine, Permit # M-2000-158
The following responses have been changed to correct or
redefine the answers presented in the March 26, 2001 adequacy
response. Thanks for pointing out the problems and suggested
changes so we can keep this going. As before I an responding for
my client Platte Sand & Gravel LLC.
1. PS&G cannot predict the exact areas where dewatering may take
place in each area. At this time the plans are to dewater a
very small area in each lake area. This will create an area
where the dredge can be set and/or built on the floor of the
excavation. Once the setup is complete the pumps would be
shutoff and the excavation would refill, floating the dredge
so mining could resume. The area of dewatering will be
limited to one (1) acre or less in each lake area, as far from
the permit boundary as possible. The depth mined would be
limited to 15 feet below the static water level or less, to
reduce the impacts to surrounding wells. The dewatering period
on each small area may extend up a year to allow time to
remove the gravel from the hole and setup the dredge.
Rule 6.4.8 Exhibit H - wildlife Information
28. First I want to thank the Division of Wildlife (DOW) for the
comprehensive reports they have prepared. Their information
has been very helpful in determining the wildlife issues on
the site. The undisturbed areas along the river are desig-
nated wildlife habitat and the reclaimed areas around the
lakes are the proposed recreation areas. However, the
operator will not change the sloping plan or the seedmix at
this time since the wildlife areas will not be disturbed.
29. Very few trees or shrubs will be removed by mining and none
will be removed by the operator in the wildlife habitat areas.