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• the permit area in REA Canyon. Spring 4 (CJ-LO-SPG #4) is approximately 200 feet <br />west of the permit azea in Carbon Junction Canyon. Summaries of the data collected for <br />the 2002 water year for the springs aze found in Tables 1 and 2. <br />Spring Flow Rate <br />Flow rates at springs 3 and 4 appeaz to respond to seasonal rechazge, snowpack, and <br />recent precipitation events. In general, spring flow is highest during the spring months of <br />the calendar year, responding to infiltration from snowpack and shallow groundwater <br />recharge. Spring flow is usually lowest during the autumn and winter of the calendaz year, <br />reflecting drier conditions with less precipitation and recharge to the springs. During <br />years with high snow pack, such as 1994-1995, flow rates were significantly higher than in <br />more normal years (1997-1998) or dry years (1998-1999). Flow rate information was not <br />collected for the 2002 water year. <br />Spring Temperature <br />Temperatures of spring flow appear seasonally related. During the winter and early <br />spring, temperatures are at their lowest. With the onset of warmer weather, spring <br />temperatures rise through the summer. With the coming of autumn and winter, spring <br />temperatures begin to decrease and reach their lowest level during first calendar quarter <br />• sampling. This phenomenon appears to support the conjecture that these springs are <br />shallow and recharged largely by winter snowmelt. Spring temperatures during this water <br />year were outside the range of previously recorded temperatures. The spring <br />temperatures recorded during March of this water year were significantly lower than in <br />prior yeazs, hovering just above freezing. With only one record from each spring this <br />water year, it is too soon to speculate on the significance of these readings. <br />PH <br />pH values of the springs fluctuate seasonally, with values remaining on the slightly basic <br />side. The pH values are not particularly well correlated to season or spring temperature, <br />though in general, pH values appear cotrelated to flow, with lower (more neutral) pH <br />values during higher flow conditions. In general, Spring 3 has higher flow and lower <br />overall pH values than Spring 4. In water years 1995 and 1996, pH values fluctuated <br />through the seasons, being lower during high flow and higher during low flow times. <br />During the last three water years, pH values at both springs have shown very slight <br />increases in the alkaline range. Spring 4 pH peaked this water yeaz with a pH value of <br />8.20 during the March sampling. The pH at Spring 3 peaked during the first quarter of <br />water year 2001, and showed a slight decrease this water year (from 8.00 to 7.80). <br />I <br />Carton JYnGG00 Mlne Page 4 <br />Mnua144ydrotog~ Reportrror Water Year?A02 <br />