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~, <br />`~ Applegate ~ . <br />_ . , <br />~V~p <br />- FEg,r,~ 2008 _ ~ /,J <br />DlvisiQn of k I/ <br />February 7, 2008,- . ~ ~ - _ .Mlining and Sa eon, <br />Ms. Erica Crosby ~ ~ ~ - <br />Environmental Protection Specialist _ <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 ~ ~ ~ ~ ' . <br />RE: Carma Bay shore, LLC; St. Vran.Lakes, Permit No. M-1982-015 ~~ ~~ <br />Y. <br />Quarterly Report for Monitoring Wells (Dec 07, Jan 08;-Feb 08) ~ ~ ' <br />Dear Erica: ' <br />This letter serves as our.. first quarterly report for the three monitoring wells that were installed <br />along the: northwest perimeter. of the Carma Bayahore Reservoir. This reservoir: was slurry-wall <br />lined and a 6" perforated drain was .installed north' and west of the. liner to .promote adequate <br />draining and to prevent mounding north of the reservoir. This drain pipe daylights into St. Vrain - <br />Creek. The purpose of this monitoring,well.program is to determine, the- effectiveness .of the ' <br />perimeter drain.. ~ - , <br />Our monitoring includes .recording the water level in the wells,in relationship to the elevation of <br />the drain and report if the well water level rises over a foot above the top of the drain pipe level: <br />The drain pipe. elevation is based on drawings provided by Carroll &: Lange, the project's design <br />engineer. <br />Three monitoring wells were,installed on November 29, 2007 by Terracon Consulting Engineers <br />& Scientists, the project's geotechnical engineer. The drill logs for all three holes reported the " <br />lithology to be clay with sand. ' ~ - ' <br />The water levels were recorded on December 4, 2007 and were not over.one foot above the top - ~- <br />of drain pipe in a1~y of the three monitoring well locations. A second set of readings:was taken <br />' on January 4, .2008 and the.. water level at Monitoring Well 1 (MW1) had risen to 1.1-feet over <br />the top, of -the drain pipe. However; there .was no water corning out of the drain pipe where it , <br />' daylights into -the; ' St. Vran Creek.. The water level in MW 1-had .lowered by the February <br />5~'readings. ~To date; we have not seen any water coming out of the drain during our field visits, <br />1499 VVest.120th Avenue, Suite 200 (303) 452-6611 • Fax (303) 452-2759 , <br />Denver, Colorado 80234-2759 ~ . - www.applegategroap,com, <br />