2012-06-07_HYDROLOGY - M2001005

• Permit No: M2001005
• IBM Index Class Name: HYDROLOGY
• Doc Date: 6/7/2012
• Doc Name: Transit Mix Concrete Co Pit, Approval Period
• From: DWR
• Media Type: D
• Archive: No

Table 1
Transit Mix - Grisenti Gravel Pits
Projected Depletions from Mining Operation (2011 -2013)
Notes:
[1] Production projections based upon Transit Mix's projected maximum annual production.
[2] Based upon 4 percent water loss by weight.
[3] Dust control projections based upon the annual total of previous monthly maximums distributed uniformly through the year.
[4] Based upon NOAA Evaporation Atlas (45.4 inches per year), distributed monthly based upon State's SB -120 guidelines.
[5] Based upon average monthly precipitation data from the NOAA Climate Data (Canon City, 1950 - 2003).
[6] Effective Precipitation equals 70 percent of total precipitation, based upon the State's SB -120 guidelines, [5] * 0.70.
[7] Net Evaporation equals Gross Evaporation less Effective Precipitation, [4] - [6].
[8] Exposed water surface area is 19.37 acres as measured by Transit Mix and projected to increase to a maximum of 25.07 acres in August, 2011.
[9] Equals [7] x [8].
[10] Total Depletion equals [2] + [3] + [9].
__ BBA H \9107 - Transit MLx \09 - Cmmtii\SWSP Tables 2011 xlm 1- Production
w.x!cr c nnvxlrAn;e B151701' B 0 GVIN Al S 0C1A 7-6S INC 2/3/2011 239 PM JAK
Production
Exposed Rater
Surface
Total
Depletion
Exposed Net
Mined
Water
Dust
Gross
Total
Effective
Net
Groundwater
Evaporation
from Mining
Material
Consumed
Control
Evaporation
Precipitation
Precipitation
Evaporation
Area
Volume
Operation
(x 1000 tons)
(ac -ft)
(ac -ft)
(ft)
(ft)
(ft)
(ft)
(acres)
(ac -ft)
(ac -ft)
Month
1
2
31
41
5
6
7
8
9
[101 1
Feb -11
19.95
0.59
0.38
0.13
0.04
0.03
0.10
19.37
2.03
3.00
Mar-11
22.08
0.65
0.42
0.21
0.08
0.06
0.15
19.37
2.98
4.05
Apr -1l
21.37
0.63
0.41
0.34
0.11
0.08
0.26
19.37
5.04
6.08
May -11
22.08
0.65
0.42
0.45
0.13
0.09
0.36
19.37
6.99
8.06
Jun -11
21.37
0.63
0.41
0.55
0.10
0.07
0.49
19.37
9.41
10.45
Jul -11
22.08
0.65
0.42
0.57
0.15
0.11
0.46
19.37
8.96
10.04
Aug -11
22.08
0.65
0.42
0.51
0.16
0.11
0.40
25.07
9.92
11.00
Sep -11
21.37
0.63
0.41
0.38
0.09
0.06
0.32
25.07
8.00
9.04
Oct -I1
22.08
0.65
0.42
0.26
0.07
0.05
0.21
25.07
5.30
6.37
Nov -11
21.37
0.63
0.41
0.15
0.06
0.04
0.11
25.07
2.73
3.77
Dec -11
22.08
0.65
0.42
0.11
0.04
0.03
0.08
25.07
2.11
3.18
Jan-12
22.08
0.65
0.42
0.11
0.03
0.02
0.09
25.07
2.19
3.27
11 -12 Total
260.00
7.65
5.00
3.78
1.06
0.74
3.03
-
65.66
78.31
Feb -12
19.95
0.59
0.38
0.13
0.04
0.03
0.10
25.07
2.62
3.59
Mar-12
22.08
0.65
0.42
0.21
0.08
0.06
0.15
25.07
3.86
4.93
Apr -12
21.37
0.63
0.41
0.34
0.11
0.08
0.26
25.07
6.53
7.57
May -] 2
22.08
0.65
0.42
0.45
0.13
0.09
0.36
25.07
9.05
10.12
Jun -12
21.37
0.63
0.41
0.55
0.10
0.07
0.49
25.07
12.18
13.22
Jul -12
22.08
0.65
0.42
0.57
0.15
0.11
0.46
25.07
11.60
12.68
Aug -12
22.08
0.65
0.42
0.51
0.16
0.11
0.40
25.07
9.92
11.00
Sep -12
21.37
0.63
0.41
0.38
0.09
0.06
0.32
25.07
8.00
9.04
Oct -12
22.08
0.65
0.42
0.26
0.07
0.05
0.21
25.07
5.30
6.37
Nov -12
21.37
0.63
0.41
0.15
0.06
0.04
0.11
25.07
2.73
3.77
Dec -12
22.08
0.65
0.42
0.11
0.04
0.03
0.08
25.07
2.11
3.18
Jan-13
1 22.08
0.65
0.42
0.11
0.03
0.02
0.09
25.07
2.19
3.27
12 -13 Tota
260.00
7.65
5.00
3.78
1.06
0.74
3.03
-
76.08
88.74
Notes:
[1] Production projections based upon Transit Mix's projected maximum annual production.
[2] Based upon 4 percent water loss by weight.
[3] Dust control projections based upon the annual total of previous monthly maximums distributed uniformly through the year.
[4] Based upon NOAA Evaporation Atlas (45.4 inches per year), distributed monthly based upon State's SB -120 guidelines.
[5] Based upon average monthly precipitation data from the NOAA Climate Data (Canon City, 1950 - 2003).
[6] Effective Precipitation equals 70 percent of total precipitation, based upon the State's SB -120 guidelines, [5] * 0.70.
[7] Net Evaporation equals Gross Evaporation less Effective Precipitation, [4] - [6].
[8] Exposed water surface area is 19.37 acres as measured by Transit Mix and projected to increase to a maximum of 25.07 acres in August, 2011.
[9] Equals [7] x [8].
[10] Total Depletion equals [2] + [3] + [9].
__ BBA H \9107 - Transit MLx \09 - Cmmtii\SWSP Tables 2011 xlm 1- Production
w.x!cr c nnvxlrAn;e B151701' B 0 GVIN Al S 0C1A 7-6S INC 2/3/2011 239 PM JAK