2016-02-01_HYDROLOGY - M1987049

• Permit No: M1987049
• IBM Index Class Name: Hydrology
• Doc Date: 2/1/2016
• Doc Name: Subsitiute Water Supply Plan
• From: DWR
• To: DRMS
• Email Name: TOD
• Media Type: D
• Archive: No

Table 1B
Ready Mixed Concrete Company-Bromley Lakes Site
Depletion Analysis(January-December 2016)
2016 SWSP Projections
(all values in acre-feet unless specified)
Bromley Lakes Lot 2/Plant Site Total
Exposed Net Gravel Production Aggregate Total Dewatering Dewatering Total Lagged
Ground Evaporation Above Below Moisture Evap and Pumping Pumping Lagged Site
Water Area GW Table GW Table Content Gravel Volume Depletion Depletion Depletion
(acres) (tons) (tons) Depletion Depletion
Month 10 11 [12] [13] 14 15 [16] [17] 181
Jan 2016 2.0 0.2 0 60,000 1.8 1.9 155.0 0 2.0 6.9
Feb 2.0 0.2 0 70,000 2.1 2.3 145.0 0 2.2 6.6
Mar 2.0 0.3 0 90,000 2.6 2.9 155.0 0 2.7 7.0
Apr 2.0 0.5 0 110,000 3.2 3.7 150.0 0 3.3 9.1
May 2.0 0.6 0 110,000 3.2 3.9 155.0 0 3.6 11.1
Jun 2.0 0.9 0 110,000 3.2 4.1 150.0 0 3.9 13.8
Jul 2.0 0.9 0 124,000 3.7 4.6 155.0 0 4.3 15.7
Aug 2.0 0.8 0 0 0 0.8 155.0 0 2.1 13.1
Sep 2.0 0.6 0 0 0 0.6 150.0 0 1.2 10.7
Oct 2.0 0.4 0 0 0 0.4 155.0 0 0.8 8.6
Nov 2.0 0.2 0 0 0 0.2 150.0 0 0.4 6.0
Dec 2016 2.0 0.2 0 0 0 0.2 155.0 0 0.2 4.6
Jan-Dec 2016 Total - 5.8 0 674,000 19.8 1 5.6 1830.0 0 26.8 113.2
[10] Total surface area of exposed ground water at the Bromley Lakes Lot 2/Plant Site.The exposed ground water is conservatively projected to be 2 acres in
2016.
[11] Net evaporation equals exposed ground water area multiplied by the net evaporation rate,[10]x[4]/12.
[12] Production above and below the static ground water(GW)table.Since the exact timing of production above the GW table is not known,projections
conservatively show all production below the GW table.
[13] Wash water and aggregate moisture content equals 2%by weight for gravel mined above the ground water table and 4%by weight for gravel mined
below the ground water table.
[14] Total evaporation and gravel mining depletion equals[11]+[13].
[15] Bromley Lakes Lot 2/Plant Site metered dewatering pumping to the McCann Ditch.
[16] Dewatering pumping depletion is equal to the dewatering pumping in column 15 lagged over 5 months during the months that RMCC is not dewatering
(i.e.when column 15 equals zero).
[17] Total lagged depletion equals the Bromley Lakes Lot 2/Plant Site evaporation and gravel depletion in column 14 lagged over 5 months plus the
dewatering pumping depletion in column 16.The lagging pattern is based upon the factors provided in the September 20,2013 SWSP Request.
[18] Total lagged site depletion for Bromley Lakes Cells 1 and 2 and Lot 2/Plant Site equals[91+[17].
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