2008-05-29_PERMIT FILE - C1981019A ‎(4)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 5/29/2008
• Section_Exhibit Name: Rule 4 Performance Standards -ST
• Media Type: D
• Archive: Yes

RULE 4 PERFORMANCE STANDARDS
INSPECTION PLAN
During construction of the East Taylor and West Taylor Fills, Colowyo will provide the following
information in certified reports as required by Rule 4.09.1(11).
1. Inspections will be conducted at least quarterly during the construction period and during the
following specific construction periods.
a. removal of topsoil and organic material
b. placement of underdrain system
c, installation of surface drain system
d. placement of fill material to insure that the
dump face and that the formation of vo
prevented and
e. revegetation
largest rocks are reaching the bottom of the
is that adversely affect mass stability are
The purpose of the inspections is two fold. First, these inspections will document and certify that the
construction plan is being followed. Secondly, during the above phases of the construction, a key
emphasis of all inspections will be to implement routine contingencies as situations warrant. For
example, perhaps a section of underdrain should be reworked, or the spoil dump raised to provide
optimum gravity spoil sorting. Inspections and implementation of contingencies during these critical
phases of fill construction will be a routine but very important component of fill inspections.
2. Each certified inspection report will be provided to the Division within two weeks after each
required inspection. Each report will certify that the fill has been constructed as specified in the
minimum design approved by the Division. The reports will include a description of any
appearances of instability, structural weakness and other hazardous conditions observed during
the inspection.
3. Certified reports addressing the underdrain system will include color photographs taken during
and after construction, but before the underdrain is covered with spoil.
After construction, the South Taylor fills will be monitored quarterly for the following items and reports
will be submitted in the Annual Reclamation Reports. Monitoring will continue until such time that
DRMS staff approve a revision to this plan.
The groundwater piezometer well will be established in the valley bottom and will be monitored
quarterly for water level and the other parameters consistent with the present Colowyo
groundwater monitor plan.
2. On a quarterly basis, a certified report by a registered engineer will be completed taking into
consideration any changes and will note any evidence of surficial slope failure or the formation of
springs or seeps on the face of the fill.
0
South Taylor/Lower Wilson - Rule 4, Page 22 Revision Date: 3130/07
Revision No.: PR-02