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Table 1. Monthly Water Balance
<br /> Januar February March Apnl May June July August September October November December Annual Monthly Avg.
<br /> Days 31 28 31 30 30 30 31 31 30 31 30 31 364
<br /> In put to Pond
<br /> 1 Pumped Ground Water 1 GPM 25.0 25.0 25.0 28.0 26,0 28.0 28.0 25.0 25.0 25.0 25.0 25.0 25.0
<br /> 2 1 Gallons 1,116,000 1,008,000 1,116.000 1.209,600 1,209.600 1,209,600 1,249.920 1,116,000 1,080.000 1,116.000 1,080,000 1.116,000 13,626,720 1.135,560
<br /> 3 Precipitation 2 Inches 5.60 3.49 5.10 2.10 0.16 0.02 - - 2.47 2.22 3.93 2.60 27.89 2.32
<br /> 4 3 Gallons 4,006 2.411 3.523 1.450 111 14 0 0 1,706 1,533 2.714 1,796 19,264 1,605
<br /> Losses from Pond
<br /> 5 Pond Surface Evaporabon 4 Inches 0.79 1.34 4.33 6.54 10.00 10.67 13.27 9.72 7.80 3.03 1.89 0.83 70.21 5.85
<br /> 6 Avg.Pond Surface Area 5 sq.ft. 7.373 7.373 7,373 7.373 6,653 5.717 8.370 7.138 6,842 6,653 7,040 7,373
<br /> 7 Pond Surface Evap.Volume 4 Gallons 3,631 6,159 19,901 30.059 41,474 38.027 52,694 43.253 33,268 12.567 8,294 3.815 293,142 24,429
<br /> 8 Avg.Aerator Pumping Rate 6 GPM 50 50 50 50 50 50 50 35 35 50 50 50
<br /> 9 Aerator Spray Evaporation 7 Gallons 223.200 201.600 223,200 540,D00 540.000 540.000 558.000 390.600 378.000 223.200 216,000 223.200 4,257,000 354,750
<br /> 10 Pond Infiltration per Area 8 Inches 161 145 161 155 155 155 161 161 155 161 155 161 1,886 157
<br /> 11 Avg.Infiltration Area 5 sq fit, 7,373 7,373 7.373 7,373 6.653 5.717 8,370 7,138 6,842 6,653 7,040 7,373
<br /> 12 Infiltration Volume Gallons 738.049 666.625 738.049 714,241 544.512 553.839 637,647 714.565 662.801 665.996 681,943 738,049 8.156.316 679.693 /
<br /> Pond Net t
<br /> 13 Net Water into Pond Gallons 155.126 136,027 138,372 (73,249) (16,275) 77,747 1,579 (32,418) 7,637 215,771 176.477 152,732 939,526 78,294
<br /> 14 Water from Previous Month Gallons 151,085 151,085 151,085 151.085 77.836 61.560 139,307 140.887 108.469 118.105 151,085 151,085 129.223
<br /> 15 Maximum Volume of Pond Gallons 302,171 302,171 302,171 302.171 302.171 302.171 302,171 302,171 302.171 302,171 302.171 302,171
<br /> 16 Avg.Pump-Cut Rate(Required 9 GPM 13.9 13.5 12.4 0.0 0.0 0.0 0.0 0.0 0.0 18.2 16.3 13.7 7.2
<br /> 17 Avg.Pump-Out Rate(Recom.) 9 GPM 13.9 13.5 12.4 0.0 0.0 0.0 0.0 0.0 0.0 16.2 16.3 13.7 7.2
<br /> 18 Water Stored in Pond Gallons 151,085 151,085 151.085 77.836 61.560 139.307 140,887 108.469 116,105 151,085 151.085 151,085 129.223
<br /> 19 Available Water Storage Gallons 151.085 151,085 151,085 224.334 240,610 162.863 161,284 193,702 186.065 151,065 151,085 151.085 172,948
<br /> 20 1 Days 4.2 4.2 4.2 5.6 6.0 4.0 4.0 5.4 5.2 4.2 4.2 4.2 4.6
<br /> 21 Pond Water Elevation 5 Feet ams 128.5 128.5 128.5 127.0 126.6 128.3 128.3 127.7 127.8 128.5 128.5 128.5 128.1
<br /> 22 Water Output to Treat/Spray 10 Gallons 155.126 136,027 138,372 0 0 0 0 0 0 180,791 176,477 152,732 939,526 78.294
<br /> Treatment Plant Net
<br /> 23 Input from Pond Gallons 155.126 136,027 138,372 0 0 0 0 0 0 180,791 176.477 152.732 939.526 78,294
<br /> 24 Losses from Treatment 7 Gallons 15.513 13,603 13.837 0 0 0 0 0 0 18.079 17.648 15,273 93,953 7,829
<br /> 25 Output to Spray Field 10 Gallons 139.614 122,424 124,535 0 0 0 0 0 0 162,712 158.829 137,459 845.573 70,464
<br /> Input to Spray Field
<br /> 26 Input from Pond(Direct) 10 Gallons 0 0 0 0 0 0 0 0 0 0 0 0 -
<br /> 27 Input from Treatment Plant 10 Gallons 139,614 122,424 124,535 0 0 0 0 0 0 162,712 158,829 137,459 845,573 70,464
<br /> 28 Precipitation 1 Inches 5.80 3.49 5.10 2.10 0.16 0.02 0 0 2.47 2.22 3.93 2.60 27.89 2.32
<br /> 29 11 Gallons 2,519,911 1,516,291 2.215,784 912.382 69,515 809 0 0 1,073,135 964,518 1.707,457 1,129,615 12,117,297 1,009.775
<br /> Losses at Spray Field
<br /> 30 Field Surface E-Transp. 2 Inches 0.79 1.34 4.33 6.54 10.00 10.67 13.27 9.72 7.80 3.03 1.89 0.83 70.21 5.85
<br /> 31 11 Gallons 343,229 582,186 1,881,244 2,841,417 4,344,674 4,635,766 5,765,383 4,223,024 3,388.846 1,316,436 821,143 360,608 30.503,959 2,541,997
<br /> 32 Avg.Spray Pumping Rate 13 GPM 18.6 18.2 16.7 0.0 0.0 0.0 0.0 0.0 0.0 21.9 22.1 18.5 9.7
<br /> 33 Spray Evaporation 7 Gallons 13,961 12.242 12,454 0 0 0 0 0 0 16,271 15.883 13,746 64,557 7.046
<br /> Spray Field Net
<br /> 34 Total Soil Water Added(Lost) Gallons 2,302.334 1,044,287 446,622 (1,929,035) (4,275,160) (4.627,078) (5.765,383) (4.223,024) (2,315.711) (205,478) 1,029,260 892,720 (17,625,646) (1,468.804)
<br /> 35 11 Inches 5.30 2.40 1.03 (4.44) (9.84) (10.65) (13.27) (9.72) (5.33) (0.47) 2.37 2.05 (40.57) (3.38) `
<br /> 36 Avg.Spray Application Rate 13 In/Hr 0.29 0.25 0.26 0.00 0.00 0.00 0.00 0.00 0.00 0.34 0.33 0.28
<br /> 37 Maximum Application Rate 15 INHr 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50
<br /> 1 Assumes groundwater pumping for 24 hr/d.
<br /> 2 100-Year wet season data from 1982-1983 Stockton Rainfall-U.S.Weather Bureau
<br /> 3 Maximum pond catchment area= 1108 sq.If
<br /> 4 Evaporation from Ca.Dept Water Resources Bulletin 73-79 Tracy,1951(Lower than Tracy Pumping Station 21-year low)
<br /> 5 See look-up table,assume infiltration area=pond surface area
<br /> 6 Assumes 5o GPM maximum pumping rate f 24 hr/day
<br /> 7 Estimated evaporation from the spray systems. Oct.-Ma 10% Apr-Sep: 25%
<br /> 8 5.18 Inches/day,from conservative assumptions K(horiz)=51.84 in/d(onsite pump test),K(ver1.)=K(honz.)/10,hydraulic gradient=1,and infiltration area=area of pond surface. -
<br /> 9 Assumes 6 hours operating time for pumps each day.
<br /> 10 Treatment can be used in off hours during packing season. or bybassed if permitted by pond effluent concentration limits.
<br /> 11 Total spray field area= 16 Acres= 696,960 sq.It
<br /> 12 0.5 Inches 1 hour from Soil Survey of San Joaquin County,California
<br /> 13 Assumes 4 hour application over 4 acres at a bme.
<br /> 14 Maintains Pond at 50%capacity.
<br /> 15 Recommended site specific water intake in irrigated areas for Stomar Sod, in Sod Survey of San Joaquin County,CA,SCS
<br /> Values in parentheses are negative
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