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Water Quality <br />• Surface water in Bolton Draw and its tributaries results <br />directly from snow melt and precipitation runoff. As such, <br />it generally is not as high in TDS and salts as is water <br />residing in the shallow, weathered bedrock surface. Water <br />derived from the drainage up gzadient of the lease <br />tract is thought to be of adequate quality for irrigation <br />usage; however, no water quality samples have as yet been <br />collected. These will be collected as runoff in the <br />ephemeral streams begins in the spring. <br />Surface Water Monitoring <br />Two surface water monitoring stations are to be installed <br />on the lease tract. The first will be a weir located in <br />the drainage bottom on the east lease boundary, as shown on <br />Plate 1. This weir will monitor discharges from the drainage <br />above the lease area. The second weir will be installed <br />just below the sediment control pond and will monitor any <br />' discharges from the pond and consequently the disturbed <br />area. The first weir will be monitored on a weekly basis <br />when flows are evident. The second weir will be monitored <br />daily during any periods of discharge. <br />Water quality samples will also be secured from these two <br />monitor points. Point 1 will be sampled quarterly and <br />point 2 will be sampled at those frequencies required by the <br />• 16 <br />