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ORDINANCE NO. 135 <br />AN ORDINANCE OF THE CITY COUNCIL OF THE TOWN OF IAS ALTOS <br />HILLS AMENDING ORDINANCE NO. 78 BY ADDING NEW SECTIONS <br />THERETO PERTAINING TO MINIMUM AREA OF STEEP LATS <br />THE CITY COUNCIL OF THE TOWN OF IAS ALTOS HILLS DOES HEREBY ORDAIN <br />AS FOLLOWS: <br />SECTION I. This ordinance is adopted pursuant to Section 65858 of <br />the Government Code of the State of California, and the City Council of <br />the Town of Los Altos Hills does hereby find and determine that the <br />Planning Commisssion of said City is considering or studying or intends to <br />study within a reasonable time proposals relating to appropriate zoning <br />regulations for steep sites, This ordinance is therefor adopted as an <br />urgency measure to protect the public health, safety and welfare of the <br />Town of Los Altos Hills, <br />SECTION II. Ordinance No. 78 of the Town of Los Altos Hills adopted <br />December 4, 1962, is hereby amended by adding to Section VIII thereof two <br />new subsections as follows: <br />118:11 Special Rule for Steep Lots, Notwithstanding the general <br />rule expressed in Section 8:10 above, the minimum net area of <br />every lot used for a dwelling, if the average slope of said lot <br />(or any portion thereof of an area of one acre or more) is in excess <br />of twenty-five percent (2590), shall be not less than 87,120 <br />square feet net and only one primary dwelling unit shall be <br />allowed on such lot. <br />218:12 Average Slope, For purpose of this ordinance, the average <br />slope of a lot shall be determined as follows: <br />Either by determining the average slope by measuring the slope of <br />the land (using generally accepted engineering methods) at a number <br />of points (the number and location of such points to be subject to <br />approval of the Town Engineer) on the parcel and then averaging the <br />measurements, or, in the alternative, and at the option of the <br />subdivider or owner, by using the contour measurement method using <br />the following formula: <br />S = 2.29 x 10-3(IL) <br />A <br />where I = Contour Interval <br />L = Combined length of contour lines in scale feet <br />A = Total included acreage <br />S = Average slope in %. " <br />-1- <br />