2017-01-13_PERMIT FILE - C1994082

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 1/13/2017
• Section_Exhibit Name: Tab 13 Facilities
• Media Type: D
• Archive: No

sediment removal or other corrective actions will be taken to restore adequate sediment storage capacity to the
pond.
On average, sediment ponds 010 and 012 show flow year round. SPL has seen minimal loss of storage
capacity within these sediment ponds from 2008 to 2015. Starting in 2016 SPL requests a variance from the
requirement to conduct annual surveys of these sediment ponds, as required by Rule 4.05.905)(C). In return,
SPL will conduct surveys of sediment ponds 010 and 012 every five years along with annual visual inspections
as reflected in the following schedule.
Sediment Pond
Inspection Type & Frequency
Next Scheduled Survey
010
5 Year Capacity Survey/ Visual
2020/ Annual
011
Visual Inspection
Annual
011 A
Visual Inspection
Annual
012
5 Year Capacity Survey/ Visual
2020/ Annual
012A
5 Year Capacity Survey/ Visual
2020/ Annual
013
Visual Inspection
Annual
014
Visual Inspection
Annual
Every five years SPL will monitor the sediment storage capacity of sediment ponds 010, 012, and 012A with
one or a combination of the following methods, as applicable:
1. Reference Stake - A reference stake will be set at a predetermined clean-out elevation beneath the
principal spillway. When sediment storage reaches this elevation, corrective action would
TR -47 4b Revised 12/16