2012-04-05_HYDROLOGY - C1981041 ‎(6)‎

• Permit No: C1981041
• IBM Index Class Name: HYDROLOGY
• Doc Date: 4/5/2012
• Doc Name: Impoundment Yearly Inspection
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Permit Index Doc Type: Prof Pond Certifications
• Email Name: MPB
• Email Name: SB1
• Media Type: D
• Archive: No

minus the design depth. The percent of sediment buildup is 60% (3.2' deep divided by 5.3'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity:
Pond 11 collects run -off from Cameo Borrow Area No 2. The pond was dry during the
inspection. The Operator obtained approval from DRMS, (TR -47), to amend the design of the
pond so it relies primarily on storage to control run -off from the design event (DRMS Rule
4.05.9(2)(e)). The design event the pond must contain is the 25 -year event which generates
0.47 A -F of sediment and 0.66 A -F of run -off for a total required pond capacity of 1.13 A -F.
During 2006 the pond received a substantial amount of sediment from an overflow of Coal
Gulch. The estimated capacity of the pond was reduced from 5.7 A -F to 3.5 A -F. The pond is
still significantly oversized for both sediment and water capacity.
Pond 13 collects run -off from the reclaimed north portal. The pond was dry during the
inspection. On August 29, 2002, the undersigned certified the water and sediment capacities of
pond 13 at 0.80 A -F and 0.34 A -F respectively. There are approximately 0.2'of sediment buildup
in the pond. This figure is derived from the length of the sediment pole located in the pond
minus the design depth. The percent of sediment buildup is 10% (0.2' deep divided by 2.0'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity.
The CBA -1 non - discharging sump collects run -off from Cameo Borrow Area No. 1. The sump
was dry during the inspection. The sump has a depth of 3.8 feet. CBA 1 sump has the following
estimated capacity which is also Mr. Reschke's certified capacity.
The north decline east and west non - discharging sumps were reclaimed during 2011.
To the best of my knowledge and bet 4l iiznpoundments, have been maintained as designed
and in accordance with the appr0l 6.G1eilicable regulations.
Jairiti E. S r p z Date
Colons c:rofessiohbl Elder
Regi b� No. 19Z3t */
••s:� ....•
-2-
Water
Sediment
Total
Pond 13 A -F
0.80
(0.34 *0.9) =0.31
1.11
minus the design depth. The percent of sediment buildup is 60% (3.2' deep divided by 5.3'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity:
Pond 11 collects run -off from Cameo Borrow Area No 2. The pond was dry during the
inspection. The Operator obtained approval from DRMS, (TR -47), to amend the design of the
pond so it relies primarily on storage to control run -off from the design event (DRMS Rule
4.05.9(2)(e)). The design event the pond must contain is the 25 -year event which generates
0.47 A -F of sediment and 0.66 A -F of run -off for a total required pond capacity of 1.13 A -F.
During 2006 the pond received a substantial amount of sediment from an overflow of Coal
Gulch. The estimated capacity of the pond was reduced from 5.7 A -F to 3.5 A -F. The pond is
still significantly oversized for both sediment and water capacity.
Pond 13 collects run -off from the reclaimed north portal. The pond was dry during the
inspection. On August 29, 2002, the undersigned certified the water and sediment capacities of
pond 13 at 0.80 A -F and 0.34 A -F respectively. There are approximately 0.2'of sediment buildup
in the pond. This figure is derived from the length of the sediment pole located in the pond
minus the design depth. The percent of sediment buildup is 10% (0.2' deep divided by 2.0'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity.
The CBA -1 non - discharging sump collects run -off from Cameo Borrow Area No. 1. The sump
was dry during the inspection. The sump has a depth of 3.8 feet. CBA 1 sump has the following
estimated capacity which is also Mr. Reschke's certified capacity.
The north decline east and west non - discharging sumps were reclaimed during 2011.
To the best of my knowledge and bet 4l iiznpoundments, have been maintained as designed
and in accordance with the appr0l 6.G1eilicable regulations.
Jairiti E. S r p z Date
Colons c:rofessiohbl Elder
Regi b� No. 19Z3t */
••s:� ....•
-2-
Water
Sediment
Total
CBA -1 Sump - A -F
0.18
0.04
0.22
minus the design depth. The percent of sediment buildup is 60% (3.2' deep divided by 5.3'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity:
Pond 11 collects run -off from Cameo Borrow Area No 2. The pond was dry during the
inspection. The Operator obtained approval from DRMS, (TR -47), to amend the design of the
pond so it relies primarily on storage to control run -off from the design event (DRMS Rule
4.05.9(2)(e)). The design event the pond must contain is the 25 -year event which generates
0.47 A -F of sediment and 0.66 A -F of run -off for a total required pond capacity of 1.13 A -F.
During 2006 the pond received a substantial amount of sediment from an overflow of Coal
Gulch. The estimated capacity of the pond was reduced from 5.7 A -F to 3.5 A -F. The pond is
still significantly oversized for both sediment and water capacity.
Pond 13 collects run -off from the reclaimed north portal. The pond was dry during the
inspection. On August 29, 2002, the undersigned certified the water and sediment capacities of
pond 13 at 0.80 A -F and 0.34 A -F respectively. There are approximately 0.2'of sediment buildup
in the pond. This figure is derived from the length of the sediment pole located in the pond
minus the design depth. The percent of sediment buildup is 10% (0.2' deep divided by 2.0'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity.
The CBA -1 non - discharging sump collects run -off from Cameo Borrow Area No. 1. The sump
was dry during the inspection. The sump has a depth of 3.8 feet. CBA 1 sump has the following
estimated capacity which is also Mr. Reschke's certified capacity.
The north decline east and west non - discharging sumps were reclaimed during 2011.
To the best of my knowledge and bet 4l iiznpoundments, have been maintained as designed
and in accordance with the appr0l 6.G1eilicable regulations.
Jairiti E. S r p z Date
Colons c:rofessiohbl Elder
Regi b� No. 19Z3t */
••s:� ....•
-2-
Water
Sediment
Total
Pond 10 A -F
1.48
0.53
2.01
minus the design depth. The percent of sediment buildup is 60% (3.2' deep divided by 5.3'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity:
Pond 11 collects run -off from Cameo Borrow Area No 2. The pond was dry during the
inspection. The Operator obtained approval from DRMS, (TR -47), to amend the design of the
pond so it relies primarily on storage to control run -off from the design event (DRMS Rule
4.05.9(2)(e)). The design event the pond must contain is the 25 -year event which generates
0.47 A -F of sediment and 0.66 A -F of run -off for a total required pond capacity of 1.13 A -F.
During 2006 the pond received a substantial amount of sediment from an overflow of Coal
Gulch. The estimated capacity of the pond was reduced from 5.7 A -F to 3.5 A -F. The pond is
still significantly oversized for both sediment and water capacity.
Pond 13 collects run -off from the reclaimed north portal. The pond was dry during the
inspection. On August 29, 2002, the undersigned certified the water and sediment capacities of
pond 13 at 0.80 A -F and 0.34 A -F respectively. There are approximately 0.2'of sediment buildup
in the pond. This figure is derived from the length of the sediment pole located in the pond
minus the design depth. The percent of sediment buildup is 10% (0.2' deep divided by 2.0'
maximum depth). Based on this sediment buildup and aerial topo maps, the pond has the
following estimated capacity.
The CBA -1 non - discharging sump collects run -off from Cameo Borrow Area No. 1. The sump
was dry during the inspection. The sump has a depth of 3.8 feet. CBA 1 sump has the following
estimated capacity which is also Mr. Reschke's certified capacity.
The north decline east and west non - discharging sumps were reclaimed during 2011.
To the best of my knowledge and bet 4l iiznpoundments, have been maintained as designed
and in accordance with the appr0l 6.G1eilicable regulations.
Jairiti E. S r p z Date
Colons c:rofessiohbl Elder
Regi b� No. 19Z3t */
••s:� ....•
-2-