1997-07-25_REVISION - M1981302 ‎(5)‎

• Permit No: M1981302
• IBM Index Class Name: Revision
• Doc Date: 7/25/1997
• Doc Name: SOIL TESTING PLAN DEEPE FARM PIT
• Type & Sequence: TR7
• Media Type: D
• Archive: No

999
SOIL TESTING PLAN
DEEPE FARM PIT
July 1, 1997
Prepared for.
Western Mobile RECEIVED
Boulder, Colorado
JUL 1997
Prepared by:
Warren R- Keammerer
Kearnmerer Ecological Consultants, Inc. r7ivi5i0n of nuner8i5&Geology
5858 Woodboume Hollow Road
Boulder, Colorado 80301
[phone]
The purpose of this plan is to assess the nutrient status of stockpiled topsoil and
remaining un-mined subgrade material at the Deepe Farm Aggregate Mine site. Data generated
as part of this testing plan will be used to evaluate possible fertilization approaches for reclaimed
lands at the site.
The goal of reclamation at the site is to create self-sustaining plant communities on mined
lands. Vegetation cover on these reclaimed areas should be comparable to that on adjacent
similar lands. Revisions to the approved reclamation plan allow for replacement of five to six
inches of topsoil on top of regraded remaining un-mined subgrade materials.
Evaluation of Remaining Un-mined Subgrade Material. Since the amount of topsoil
available for use in reclamation is limited,it will be important to evaluate the nutrient status of
the remaining un-mined subgrade material and amend it to the extent that it can also be utilized as
a nutrient source for vegetation that is established on the respread topsoil.
Five samples of the remaining un-mined subgrade material will be collected. These
samples will be sent to the Colorado State University soil testing laboratory and will be analyzed
for nitrogen, phosphorus,potassium,electrical conductivity,pH and organic matter content.
Results from these analyses along with recommendations from the lab, will be used to determine
fertilization rates for the remaining un-mined subgrade material.
Fertilizer will be applied to the surface of the remaining un-mined subgrade material and
will be disked into the top 6-8 inches. This work will be conducted before any topsoil has been
spread. This will serve to incorporate the fertilizer and will also reduce any compaction of the
remaining un-mined subgrade material.
Evaluation of Topsoil Stockpiles. Samples of topsoil will be collected from three sites on
each of the three stockpiles. Sampling will consist of collecting a 0-8 inch sample and a sample
from a depth of 34 feet(if possible)from each location(a total of 18 samples to be analyzed).
These samples will be collected at the same time as the remaining un-mined subgrade material
samples and will be sent to the CSU lab. Samples will be analyzed for nitrogen,phosphorus,