2012-04-25_HYDROLOGY - M1977560 ‎(2)‎

• Permit No: M1977560
• IBM Index Class Name: HYDROLOGY
• Doc Date: 4/25/2012
• Doc Name: Consolidated Substitute Water Supply Plan
• From: DWR
• To: BBA WATER CONSULTANTS
• Email Name: TC1
• Media Type: D
• Archive: No

BBA
- " water consultants 13 IS HOP-BR000tN ASSOCIATES. INC
Table 3
VALCO, INC.
SWSP ACCOUNTING PROJECTION
Rocky Ford East Pit
(all values in acre -feet unless otherwise indicated)
Month
Annual Total
0 .erations
2 3
Exposed
Water Gravel Batch Plant
Surface Production Pumping
(ac (tons) alions
Net Water in Batch
Evaporative Mined Plant
Deletions Gravel Pum
ID/
C I., y)015
Total
Unlagged
D - .letrons
4 D}
Remaining
Depletions
( -) /Surplus
Credit +
tl
48,000
0
ri
R- .lacement Re.uirement
4 5
6
r
120.20
1.41
0.00
121.61
Total
Lagging Lagged
Pattern Deletions
100%
121.61
Ditch Credit Re
ments
CC &OC Excess CC&
Rocky Ford Ditch OC Ditch
Ditch CU Transit CU Credit
Credit Losses Used at RF
10
11
12
-a:
•
25.72
4.51
PBWW Lease
Requested Required
Amount Amount
96.25
91.52
� /tip °ail
4.87
Notes: Shaded months oorxespond with projection data, non - shaded months correspond with actual data.
[1] Total exposed groundwater surface area in the pit. Increases to the July 2005 measured area are estimated by Valco.
[2] Total gravel mined below the groundwater table as reported by Valco.
[3] Well pumping measured with totalizer. Meter reading reported by Valco.
[4] Required evaporative replacement based upon the following: Equals ([1] - 17.4 ac) x 4.02 ft x monthly %.
17.40 ac = pre -1981 exposed groundwater surface area (does not require augmentation)
4.02 feet = amoral net evaporation rate at the site
[5] Water in mined gravel is 4% by weight of the gravel produced. Equals [2] x (1/1359 af/ton of water) x 4 %.
[6] Well pumping converted to acre-feet. Equals [31/(325,851 gal /af).
[7] Total unlagged depletions requiring replacement. Equals [4] + [5] + [6].
[8] Annual lagging pattern for depletions to the Arkansas River.
[9] Lagged depletions to the Arkansas River. The monthly amounts will change slightly as the projected total changes. Equals [7] x [8].
[10] Consumptive use credit from 2 Rocky Ford Ditch shares.
[11 ] River transit loss applied to excess Canon City and Oil Creek Ditch Credits that are used to augment depletions at Rocky Ford.
[12] Excess Canon City and Oil Creek Ditch credits used at the Rocky Ford site (reduced by transit loss). Equals (Canon City Table [10]) x (100% - [11]).
[13] Pueblo Board of Water Works scheduled release for Rocky Ford East Pit.
[14] Required Pueblo Board of Water Works lease volume needed to replace remaining depletions. Equals greater of zero and [9] - [10] - [12].
[15] Remaining Depletions ( -) or Surplus Credit ( +) after accounting for replacement sources. Equals [10] + [12] + [13] - [9].
H6051 800 - V,1c,A2011 -2012 Aco,m /i9b- SWSP ProJeettoo Accouunng 2011.2012 x/s Ac ing Form
5/6/2011 9 16 AM LWH