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" Honorable Mayor and City Council <br />January 31, 1990 <br />Page 2 <br />A- For GB, HB, or CB Zoning Districts, the requirement for two sites may be larger than one <br />- - -- -----acre, therefore the following- wording is suggested. - - - - - - - - -- - - - -- -- - - - - <br />"All newly subdivided lots shall have at least one (1) contiguous acre of land dedicated <br />for septic system use or area sufficient for two (2) separate and distinct drainfield sites, <br />whichever is greater. Placement of the second required drainfield between the trenches <br />of the first drainfield is prohibited. This area shall not contain permanent buildings or <br />structures, wells, paved surfaces, drainage easements, or the setback distances from any <br />of the above or from property lines. The suitability of this area for septic system use <br />shall be determined by comparison to the Washington County Soil Survey. If the area is <br />classified as having only "slight" or "moderate" limitations for drainfields, the area shall <br />be deemed as meeting these requirements. If any portion of the proposed area is <br />classified as having "severe" limitations, that area shall be evaluated by soil borings and <br />percolation tests to verify the accuracy of the Soil Survey's "severe" classification. If the <br />anticipated sewage flow will exceed 3600 gallons per day, suitability of this area will be <br />determined only by soil borings and percolation tests. <br />All lots existing prior to the adoption of this ordinance shall have area sufficient for two <br />(2) separate and distinct drainfield sites, as verified by soil borings and percolation tests. <br />Placement of the second required drainfield between the trenches of the first drainfield is <br />prohibited." <br />3. For PF or P Zoning Districts, there is no lot size requirement, therefore, the one acre rule <br />would not be applicable. The following wording is suggested: <br />"All lots shall have area sufficient for two (2) separate and distinct drainfield sites, as <br />verified by soil borings and percolation tests. Placement of the second required <br />drainfield between the trenches of the first drainfield is prohibited." <br />Sincerely, <br />Larry D. Bohrer, P.E. <br />LDB/mina <br />