Technical Memorandum
Golder Associates Inc. 18300 NE Union Hill Road, Suite 200 Redmond, Washington 98052 Telephone: (425) 883 0777 Fax: (425) 882 5498 TECHNICAL MEMORANDUM TO: Joe Simmler and Larry Grimm., OTAK, Inc. DATE: December 5, 2008 FR: Michael Klisch, L.Hg. and Carl Einberger, L.Hg. OUR REF: 083-93430.001 HYDROGEOLOGIC CONDITIONS, GREATER HALL LAKE, HALL CREEK, RE: CHASE LAKE, ECHO LAKE, LAKE BALLINGER AND MCALEER CREEK WATERSHED This technical memorandum (TM) has been prepared by Golder Associates Inc. (Golder) to present an overview and interpretation of the geology and hydrogeology in the vicinity of Lake Ballinger, including Hall Lake, Hall Creek, Chase Lake, Echo Lake, and the McAleer Creek areas (‘the watershed’). Groundwater interaction with surface water and the potential for stormwater infiltration into local hydrogeologic units are also discussed. This information was summarized from existing information, including: • Booth, D.B., B.F. Cox, K.G. Troost, and S.A. Shimel, 2004, Draft Composite Geologic Map of the Sno-King Area, 1:24,000, http://geomapnw.ess.washington.edu/index.php?toc=maintoc&body=services/publications/m ap/SnoKingDisc.htm. • King County, 2003, Final Environmental Impact Statement, Brightwater Regional Wastewater Treatment System, Appendix 6-B, Geology and Groundwater. • Smith, M., 1975, Preliminary Surficial Geologic Map of the Edmonds East and Edmonds West Quadrangles, Snohomish and King Counties, Washington, Washington Department of Natural Resources, Division of Geology and Earth Resources Geologic Map GM-14. • Thomas, B.E., J.M. Wilkinson, and S.S. Embry, 1997, The Ground-Water System and Ground-Water Quality in Western Snohomish County, Washington, U.S.
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