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...m. R21NCORPORATED L GrORGE �RO>�irr�ory <br />• 1. ERICH RAUQER PE <br />DIVIRONMENTAL AND E NGI.\EERING SERVICES <br />• SPRAT LGICALLY KKU)M D-ILCMICALLY [REPARE6 <br />Rule 6.4.20.11(b) requires the collection of 5 consecutive quarterly sampling events. At the time <br />of this report, two quarters of data have been collected: <br />• First Quarterly Event: May 19 -20, 2010 (2 Quarter, 2010); <br />• Second Quarterly Event: August 8, 2010 (3 Quarter, 2010). <br />1.0 Description of Surface Water Bodies and Sampling Locations <br />Five locations have been designated for the collection of surface water samples as shown on <br />Figure 1. At each location the following was undertaken: <br />Measurement of streamflow using a Flow Probe FP101 Meter. The average water <br />velocity was measured for 30 seconds as various points within the stream cross sections <br />as described below for each location; <br />Measurement of water quality field parameters using a YSI Multiparameter 556 meter <br />calibrated prior to field activities; and <br />Collection of surface water samples directly from the streams. Samples for dissolved <br />metal parameters were filtered in the field with a 45- micron filter. <br />• 1.1 La Plata River <br />The La Plata River heads in the La Plata Mountains north of the Permit Areas and flows in a <br />southerly direction until it joins the San Juan at the western edge of the city of Farmington, New <br />Mexico. Two sample locations were selected (Figure 1): <br />• SW -1 up- stream of the Idaho Mine permit area; and <br />• SW -2 down- stream of the Idaho and Mayday permit areas, below the junction with Little <br />Deadwood Gulch draining the Mayday Mine permit areas and below the wetlands <br />constructed from historical tailings on the western banks of the La Plata River. <br />Flow readings were collected across the river channel at a minimum of three locations. Flow <br />readings were collected at approximately 60% of the water depth at each location. Field <br />parameters (Table 1) indicate that the water is aerobic and circumneutral pH with low dissolved <br />salts. <br />1.2 Deadwood Gulch <br />Little Deadwood Gulch heads to the east of the Mayday Mine permit area and flows in a <br />westerly direction to junction with the La Plata River. The stream flows through both the <br />Mayday No.1 and Mayday No. 2 Permit Area. Two sample locations were selected: <br />0 "Stmtegicalfy Positioned — Technically Prepared" <br />9034 E Faster PI Suite 201, Centennial, Colorado 80112, p: (303) 832 -7664, f (303) 832 -7469 <br />