2008-11-03_REVISION - M1999098

• Permit No: M1999098
• IBM Index Class Name: REVISION
• Doc Date: 11/3/2008
• Doc Name: Amendment Submittal
• From: Aggregate Industries WCR, Inc.
• To: DRMS
• Type & Sequence: AM1
• Media Type: D
• Archive: No

Table-1
Aggregate Industries-WCR, Inc.
WW Farms Expansion
Evaporative Losses
Applegate
Group, Inc.
Date: April-08
Job #: 06-103

Month Percent of
Annual
Evaporation
(1) Gross Lake
Evaporation
(ft)
(2)
Preciptation
(in)
(3) Effective
Preciptation
(ft)
(4) Net Lake
Evaporation
(acre-ft/acre)
(5) Total Lake
Evaporation
(ac-ft)
(6)
]an 3.0% 0.11 0.42 0.02 0.08 0.08
Feb 3.5% 0.13 0.32 0.02 0.11 0.11
Mar 5.5% 0.20 0.91 0.05 0.14 0.14
Apr 9.0% 0.32 1.50 0.09 0.24 0.24
May 12.0% 0.43 2.09 0.12 0.31 0.31
Jun 14.5% 0.52 1.60 0.09 0.43 0.43
Jul 15.0% 0.54 1.29 0.08 0.46 0.46
Au 13.5% 0.48 0.99 0.06 0.43 0.43
Se 10.0% 0.36 0.94 0.05 0.30 0.30
7.0% 0.25 0.89 0.05 0.20 0.20
rNov 4.0% 0.14 0.66 0.04 0.10 0.10
3.0% 0.11 0.40 0.02 0.08 0.08
al 100% 3.58 12.00 0.70 2.88 2.88
Exposed Water Surface = 1.00 acres
Annual Precipitation = 12.0 inches -Taken from Western Regional Climate Center
Gross Annual Evaporation = 43 inches -Taken from NOAH Technical Report NWS 33
Notes:
(1) Taken from State Engineer's Guidelines for Gravel Pits at elevations below 6500 feet.
(2) Taken from NOAH Technical Report NWS 33 Map 3 and distributed monthly according to Percent of Annual Evaporation (1).
(3) Used WRCC Greeley UNC station #53553 (1967-2006) and adjusted it to 12 inches based on CDSS precipitation isohetyls
(4) Effective Precipitation equals 70% of Average Annual Precipitation, 70% * (3).
(5) Gross Evaporation minus Effective Precipitation converted to units of feet, (2) - (4).
(6) Total Evaporative Loss is the product of Net Evaporation (5) and Exposed Water Surface.
River Resource
Amendment to Permit M1999098 112C
Page G18 of G37