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levels ranging from 1,932 mg/1 to 3,367 mg/1 (Table 2.5-15a) and an <br />• alluvial well (TR-2)located on the west side of Trout Creek in the vicinity <br />of surface monitoring station TR-C had TDS concentrations which averaged <br />2,069 mg/1 (Appendix 9.6-J). <br />During mid-summer (July, August and September) when irrigation <br />becomes more prevalent, the flow at TR-a constituted 72.06$ (21.68 cfs) of <br />the streamflow measured at TR-b (30.08 cfs) while the flows from 004 and <br />007 constituted 0.01$ (0.002 cfs) and 1.97$ (0.593 cfs), respectively. <br />Using the same method as described previously, the flow balance can be <br />expressed as: <br />Fz = F1 + FZ + F3 + F, <br />where: <br />F~ = Trout Creek flow at TR-b (100$) <br />F1 = Trout Creek flow at TR-a (72.06$ of F~) <br />F2 = CDPS Outfall 004 flow (0.01$ of F~) <br />F3 = CDPS Outfall 007 flow (1.97$ of F~) <br />Fq = Flow from ot her sources <br />• Solve for F„ <br /> <br />F, = 100 - (72.06 + 0. 01 + 1.97) <br />Fq = 25.96 ($ of flow at TR-b) <br /> or 7.81 cfs <br />Also, the TDS mass balance can be expressed as: <br />S~ _ (F1 x S1 + Fi) + (FZ x SZ + F~) + (F3 x S3 + F~) + (Fq x Sq + F,) <br />+ F, <br />where: <br />Si = Mean TDS concentration at TR-D (381 mg/1) <br />S1 = Mean TDS concentration at TR-A (133 mg/1) <br />SZ = Mean TDS concentration at CDPS Outfall 009 (3,940 mg/1) <br />S3 = Mean TDS concentration at CDPS Outfall 007 (3,925 mg/1) <br />S, = Mean TDS concentration from other sources <br />• Solve for S„ <br />Renewal 3 2.SA-6 June 13,1997 <br />