Laserfiche WebLink
1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br /> <br />term adit <br />Table 3.1 Long term adit monitoring program <br />s <br />Measurement ID Description Frequency Period Comments <br />Water sample Trench- Water quality of (]uarterly When trench Sample taken from <br /> Inlet influent to is in operation weir box at trench inlet <br /> infiltration trench <br />Flow Trench Infiltration trench Monthly When trench Measurement taken <br /> Flow influent rate is in operation using weir <br />Water level SP1 $ Water level in Monthly When trench <br /> SP2 trench is in operation <br /> standpipes <br />Waler level VP1 8 Water level in Monthly When trench <br /> VP2 vadose zone is in operation <br /> piezometers <br />Visual Inspection of Monthly When trench Relief from monitoring <br />inspection trench to see if is in operation may be requested if <br /> capacity is being flow is consistently <br /> exceeded below 10 gpm <br />Water sample WGWB Water quality of Quarterly 2 years Windy Gulch Flow <br /> Windy Gulch at measurement taken <br /> rectangular weir simultaneously, if <br /> practical <br />Water sample WGWB Analysis for dye Monthly for 2 years Protocol to be <br /> tracer 6 months, developed as part of <br /> then quarterly tracer test procedures <br />Pressure APP Water pressure Monthly 2 years More frequent <br /> behind adit plug monitoring if pressure <br /> exceeds 11 psi <br />Visual Possible Monthly While plug is If seepage observed, <br />inspection seepage around accessible, flow rates to be <br /> adit plug up to 2 years measured using <br /> infiltration trench weir <br />Visual Possible Monthly 2 years <br />inspection development of <br /> springs and <br /> seeps near ortal <br />3.2 Windy Gulch monitoring <br />Windy Gulch water quality samples (WGWB) will be taken quarterly at the Windy Gulch weir, <br />which is located about 200300 ft upstream of the confluence of Windy Gulch and Willow Creek. <br />Each sample will be gathered based on the procedures outlined in Attachment A. The samples <br />obtained will be analyzed for the parameters presented in Table 2.2. Flow measurements, at the <br />time of water quality sampling will be taken at this location, when practical, as described in <br />Section 2.2. <br />