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Telephone 473•7357 <br /> Page 10 <br /> �{_� ' . <br /> .��: ��, � � CITY of OROl`TO <br /> .;, _ . i <br /> ��?:�>-� - a <br /> Yost Uffice 13ox 66•Crystal Bay, Minnesota 55323•Municipal Offices <br /> .�.,, � <br /> : i• � On the North Shore oj Lake Minnetonka <br /> . <br /> :• - • �� <br /> ' October 10, 1979 <br /> Ms. Deborah Thurston <br /> Facilities Section <br /> Division of Water Quality <br /> Minnesota Pollution Control Agency <br /> 1935 West County Road B-2 <br /> Roseville, <br /> Minnesota 55113 <br /> Dear Ms. Thurston: <br /> I am enclosing copies of six "Needs Surveys for Unsewered Areas" <br /> for various locations within the City of Orono. In most cases, <br /> these areas were developed more than twenty years ago at a time <br /> when general knowledge about septic systems, drainfield siting, <br /> and soil suitabilities was minimal at best. Today, these <br /> developments on small lots with steep slopes, clay soils, or <br /> high water tables are coming back to haunt us with failing septic <br /> systems posing health and pollution hazards in the shoreland areas <br /> of Lake Minnetonka. <br /> Orono' s basic philosophy is that further high-density development <br /> would be detrimental to the Lake Minnetonka ecosystem. This type <br /> of development normally occurs with the advent of municipal sewers. <br /> Therefore, we intend to develop with septic systems on two and <br /> five acre lots in the existing unsewered areas, with an active <br /> permanent program of plan review, construction inspection, and <br /> regular existing system inspection with mandatory maintenance. <br /> This will necessarily include finding alternatives to septic systems <br /> in a few existing developments where site conditions or lot sizes <br /> make it essentially impossible to adequately treat sewage with on- <br /> site methods. Once these existing problem areas are remedied, all <br /> future development should continue in an orderly fashion without <br /> the problem of "leap-frogging sewers" . <br /> Our present priority list for remedying existing problems is : <br /> 1. Minnetonka Bluffs - Feasibility Study about to be called <br /> (construction 1980?) <br /> 2. Shoreline Drive - Feasibility Study about to be called <br /> (construction 1980?) <br /> 3. Crystal Bay Area - Proposed within three years of interceptor <br /> completion - 1983? <br />