PERMFILE119079

• Permit No: M1983090
• IBM Index Class Name: Permit File
• Doc Name: APPLICATION FOR STATE OF COLO MLRB PERMIT
• Media Type: D
• Archive: No

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sandstone is highly weathered; however, the underlying sand-
stone is firm to dense.
(7) Groundwater: At the time of the investigation, free ground-
water was encountered in all but Boring 15 at depths two (2)
to sixteen (16) feet below the surface. No free groundwater
was encountered in Boring 15 to a depth of twenty-three and
one-half (23-1/2) feet below the surface. Water levels in
this area are subject to change due to seasonal variations,
irrigation demands on and adjacent to the property, and fluc-
tuations in the volume of flow of the Cache La Poudre River
and adjacent irrigation ditches.
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RECOMMENDATIONS AND DISCUSSION
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It is our understanding that the existing property is to be developed
~ for gravel extraction. To analyze the suitability of the site for
• mineral extraction, the property has been divided into three (3) areas.
Areas I and II, located in the flood plain of the Cache La Poudre River,
i contain varying amounts of sand and gravel. Area III consists of a
topographic high area southwest of the river which contains little or no
gravel. Therefore, the discussion of gravel included in the report will
encompass only Areas I and II.
Area I is located in the extreme northern portion of the site and
is composed of Borings 1 and 2. The ratio of overburden to gravel in
this area is approximately 1:1. The thickness of the gravel stratum in
this area varies from seven (7) to nine and one-half (9-1/2) feet and
has an average thickness of approximately eight (8) feet. This portion
of the site is overlain by an average of seven (7) feet of overburden.
Based on the two (2) test borings drilled in this area, this portion of
the site contains approximately two hundred seventy-five thousand (275,000)
cubic yards of gravel. An estimated two hundred thirty-five thousand
(235,000) cubic yards of overburden will have to be removed to obtain
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