2015-09-17_HYDROLOGY - M1977559

• Permit No: M1977559
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/17/2015
• Doc Name Note: June 1, 2015 through May 31, 2017
• Doc Name: Substitute Water Supply Plan - June 1, 2015 through May 31, 2017
• From: DNR Water Resources
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

Table 2a-1
VALCO, INC.
SWSP ACCOUNTING
Canon City East Pit
Projected Operations - June 2015 to May 2016
(all values in acre-feet unless otherwise indicated)
Notes: Shaded months correspond with projection data, non -shaded months correspond with actual data.
fl] Total maximum exposed groundwater surface area in the pit.
[2] Required evaporative replacement based upon the following: Equals ([1] - 15.4 ac) x 3.1 ft x monthly%.
15.40 ac = pre -1981 exposed groundwater surface area (does not require augmentation)
3.1 feet = annual net evaporation rate at the site
[3] Total unlagged depletions requiring replacement. Equals [2].
[4] Total lagged depletion to the Arkansas River. Lagging method described in the SWSP renewal request, dated April 2015.
[5] Historic consumptive use credit from 26 Canon City and Oil Creek Ditch shares.
[6] Total flow measured in the CC&OC Ditch by flume on Valco's property, bypassed to Arkansas River.
[7] The percent of water Valco will claim as CU from the total amount of water that flows through the ditch that month. Based on Blaney-Criddle analysis and historic irrigation records.
Actual consumptive use credit calculated from total water through flume in CC&OC Ditch.
[8] Measured Canon City and Oil Creek Ditch consumptive use credit used to augment Canon City East Pit depletions. Based on amount of total flow bypassed to river [6]; equal to a minimum of
[6] " [7] and [5].
[9] CU credit used equals the lesser of [4], [5] and [8].
[10] Excess Canon City and Oil Creek Ditch credits. Equals the lesser of ([5] or [8]) - [9].
[11] Upper Arkansas Water Conservancy District scheduled release for Canon City East Pit.
[12] Required Upper Arkansas Water Conservancy District lease volume needed to replace remaining depletions. Equals [4] - [9].
[ 13] Remaining Depletions (-) or Surplus Credit (+) after accounting for replacement sources. Equals the lessor of ( [5] or [8]) + [ 11] - [4].
BBA Pnmed On: 9/92015 PJB
rrr ann,n It,n­ BISHOP-BROGDEN ASSOCIATES. INC.
Exposed
Replacement Requirement
CC&OC Ditch Replacement
UAWCD Lease and Agreement
Remaining
Water
Net
Total
Total
Total Flow
Amount of CU
Depletions
Month
Surface
Evaporative
Unlagged
Lagged
HCU
Bypassed to
claimed per
CU Credit
CU Credit
Excess
Amount
Required Amount
(-)/Surplus
(ac)
Depletions
Depletions
Depletions
Available
River
month (%)
Measured
Used
CU Credit
Released
Credit (+ )
1
r2l
[314
5
6l
[71
r8l9
10
11i
[121
F31
June
22.6
3.24
3.24
2.87
7.77
20.1
38.7%
7.77
2.87
4.90
0.00
0.00
4.90
July
22.6
3.35
3.35
3.07
8.82
20.9
42.2%
8.82
3.07
5.75
0.00
0.00
5.75
August
22.6
3.01
3.01
3.06
7.37
20.2
36.5%
7.37
3.06
4.31
0.00
0.00
4.31
September
22.6
2.23
2.23
2.70
4.97
19.2
25.9%
4.97
2.70
2.27
0.00
0.00
2.27
October
22.6
1.56
1.56
2.19
2.54
18.6
13.6%
2.54
2.19
0.35
0.00
0.00
0.35
November
22.6
0.89
0.89
1.61
0.24
7.4
3.2%
0.24
0.24
0.00
1.84
1.37
0.47
December
22.6
0.67
0.67
1.18
0.00
0.0
0.0%
0.00
0.00
0.00
1.58
1.18
0.40
January
22.6
0.67
0.67
0.95
0.00
0.0
0.0%
0.00
0.00
0.00
1.27
0.95
0.32
February
22.6
0.78
0.78
0.87
0.00
0.0
0.0%
0.00
0.00
0.00
1.16
0.87
0.29
March
22.6
1.23
1.23
1.01
0.15
4.9
3.0%
0.15
0.15
0.00
1.16
0.86
0.29
April
22.6
2.01
2.01
1.45
2.14
17.7
12.1%
2.14
1.45
0.69
0.00
0.00
0.69
May
22.6 1
2.68
2.68
2.014.34
20.7
20.9%
4.34
2.01
2.33
0.00
0.00
2.33
Annual Total
-
22.32
22.32
22.96
38.34
149.78
-
38.34
17.73
20.61
7.00
5.23
22.38
Notes: Shaded months correspond with projection data, non -shaded months correspond with actual data.
fl] Total maximum exposed groundwater surface area in the pit.
[2] Required evaporative replacement based upon the following: Equals ([1] - 15.4 ac) x 3.1 ft x monthly%.
15.40 ac = pre -1981 exposed groundwater surface area (does not require augmentation)
3.1 feet = annual net evaporation rate at the site
[3] Total unlagged depletions requiring replacement. Equals [2].
[4] Total lagged depletion to the Arkansas River. Lagging method described in the SWSP renewal request, dated April 2015.
[5] Historic consumptive use credit from 26 Canon City and Oil Creek Ditch shares.
[6] Total flow measured in the CC&OC Ditch by flume on Valco's property, bypassed to Arkansas River.
[7] The percent of water Valco will claim as CU from the total amount of water that flows through the ditch that month. Based on Blaney-Criddle analysis and historic irrigation records.
Actual consumptive use credit calculated from total water through flume in CC&OC Ditch.
[8] Measured Canon City and Oil Creek Ditch consumptive use credit used to augment Canon City East Pit depletions. Based on amount of total flow bypassed to river [6]; equal to a minimum of
[6] " [7] and [5].
[9] CU credit used equals the lesser of [4], [5] and [8].
[10] Excess Canon City and Oil Creek Ditch credits. Equals the lesser of ([5] or [8]) - [9].
[11] Upper Arkansas Water Conservancy District scheduled release for Canon City East Pit.
[12] Required Upper Arkansas Water Conservancy District lease volume needed to replace remaining depletions. Equals [4] - [9].
[ 13] Remaining Depletions (-) or Surplus Credit (+) after accounting for replacement sources. Equals the lessor of ( [5] or [8]) + [ 11] - [4].
BBA Pnmed On: 9/92015 PJB
rrr ann,n It,n­ BISHOP-BROGDEN ASSOCIATES. INC.