2018-01-16_PERMIT FILE - M2017036 ‎(2)‎

• Permit No: M2017036
• IBM Index Class Name: Permit File
• Doc Date: 1/16/2018
• Doc Name: Groundwater Study
• From: Loveland Ready-Mix Concrete
• To: DRMS
• Email Name: JLE
• Media Type: D
• Archive: No

Second Submittal
Unfortunately, the West and Cherry wells are too close to the mine boundary for a
reinjection scenario to be practicable. They will require water supplied to them via a water
tap from West Fort Collins Water District (LRM has 23 taps available) or a feed from the
sump dewatering system. LRM commits to working with the Wests and Mr. Cherry and
has reached an agreement with them to mitigate their wells. It could be that the Plantorium
and Morgan Timber may desire water taps as well.
6.1 Plantorium Potential Mitigation
One potential mitigation strategy for the Plantorium's well is to supply pumped
groundwater to an inJection well:installed south of County Road 54 G. This plan would
require state permitting and ct6ssing under the county road with a water supply pipe. Given
that the mitigation would only be required for a short period of time, this option, while
physically viable,may have too many other constraints. Again, LRM commits to working
with the Plantorium,and has reached an agreement with them to develop the best mitigation
solution for both parties.
6.2 Morgan Timber Potential Mitigation
One potential mitigation strategy for the Morgan Timber's wells is to supply pumped
groundwater to a shallow French drain east of the Site. This plan would also require state
permitting. If mitigation is required, LRM commits to working with Morgan Timber to
develop the best mitigation solution for both parties.
6.3 Water Management Pond
Current minimum depth to groundwater from ground surface in the summer in the area is
approximately 4 feet. The predictions indicate that during Phase 1, additional water
management activities may be necessary to maintain the water table below the ground
surface adjacent to the pond. This could include increasing the water management pond
footprint by approximately 10% to accommodate the additional area needed to keep the
water table below ground surface. The pond infiltration capacity area can also be increased
by installing shallow drains radially around the outer edge of the pond perpendicular to the
Loveland Ready-Mix Concrete 22 Telesto Solutions,Inc.
20180112_grmnulwatercmdy_2nd,ubnunal doex January 2018