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Home My WebLink Aboutbocc.res.031.1978 � ti-,: _ �.�,� �:: . :- __. a;;; z ;= ` , � � ::� , R��orded at 3:16 P.M. Apr 14, 1978 .Tulie Hane, Recorder Reception Number: 2Q�2c�9 ��. PITKIN COUNTY BOARD OF COUNTY COMMISSIONERS �; RESOLUTION N0. 78- � " gaoK34� Nr,��209 ;� Re: Code Amendment - Density � Reduction for Steep STopes � ! WHEREAS, the Board held a public hearing on March 27, 1978, to consider � � an amendment to Section 3.08 of the Land Use Code which would provide a form- ula for reaucing .gross density on a parce7 when more than thirty (30) percent of the total land area is covered by slopes of greater than forty-five (45) percent, and _ WHEREAS, the Board has considered several proposals providing for density reduction in steep slope areas, has held numerous meetings since September, � � 1977 including two public hearings, has listened to concerns of affected � landowners and makes the following findings: 1. That the proposal offered on March 27, 1978, addresses the extreme problem cases whereby density may be transfered from steeply sloping hillsides and clustered on narrow valley floors creating an urbanized land use inconsistent with the intent of the rural agricultural, low density residential and resource districts. The proposal prevents these problem situations without penalizing the majority of landowners. 2. The formula allows addressing each application on a case by case basis and avoids a blanket rezoning or overlay district approach. 3. It is appropriate to reduce density when a substantial portion of the land is covered by slopes in excess of 45� because these areas are - much less suitable for development as they are typically associated with a wide range of geologic hazards including unstable slope, avalanche and rockfall areas, and � � WHEREAS, the Planning and Zoning Commission recommended approval of the � Code amendment at its February 8, 1978 meeting. ! ! NOW, THEREFORE, BE IT RESOLVED by the Board of County Commissioners that K � the Code amendment attached hereto and incorporated herein as Attachment A, be :; and hereby is approved as an amendment to Section 3.08 of the Pitkin County ' Land Use Code. �r_:,E�ffective the 27th day of March, 1978 � � Pitkin County Board of County Commissioners i `ti r, . I �� ; �, r : _ i :��. r � ' By �� . r� ' �' � Robert Child, Chairman )��:Y'i t . / r q p��s��= � ,r� � ��d.[[dQ.l.�_f�� ! ,.'� �� ,Cou� lerk and Recorder _;' :�APPRQVED AS TO FORM: , ti•:.i��1 .�� '�a�idra Stu'�1€r, oC unty Attorney • ��t��R�,i�' °�:X"r%�h'.c.'b�. 5�4�1'`'' ' . L � C1, . a . �Y,S�a�'. • ,� . � �!�c'}�-. »«�, W - �n�'� �r,r . �,�, .�„�. . . . �Yp/' � �MS • ♦ . � � r t „ ,� �roK�� ATTACNMENT A . 3.0$.08 Density Reduction for Steep Siope Areas. ; � A. There shall be a reduction in density fram that which is allowable � in the zone district whenever more than thirty percent (30%) of the _. total land area of a project is encumbered by slopes of 45� and greater. � The gross allowable density of the project shall be reduced by one percent (1%) for each one percent exceedi.ng.thirty of land'area having slopes of forty-five percent (45%) and greater. " B. The calculation ofi the formula in sub-section A is as follows: Assuming a 3100 acre parcel of land on which fifty percent of the total land area has slopes greater than 45%, the ross allowable zoned density is 3100 acres ; 30_(one unit per 30 acres�} = 103 units allowed. The density re- - duction.is calculated as follows: � 50% (percentage of land area having slopes of 45% or greater) - 30% (no density reduction for up to 30% covera9e) = 20% (percent reduc- tion of gross allowable density) x 103 units (gross allowable zoned � density) = 20.6 or 21 unit reduction. 103 units - 21 units = 82 units (net density). � C. An example of the application of the formula to a 3100 acre parcel in RS-30 where the gross zoned density is 103 units is given below, assuming - different amounts of land with slopes greater than 45�. IAf�U AREA IN DENSITY UNITS NET � EXCESS OF 45% REDUCTION Sll6TRACTED UNITS 0-30� 0� 0 103 � 45 15 15, 88 � 50 20 21' 82 60 30 31 72 7, 45 46 57 85 55 57 46 95 65 67 . 36 D. In order to determine the amount of land area having slopes of 45% and greater, the applicant shall use the county Slope Maps, adopted pursuant � to Section 5.41.01 A.2 of this Code. The applicant may elect, however, � to prepare at his own expense, more detailed slope maps for his site. � Such slope maps sha11 include an accurate survey and tapography prepared � by a qualified engineer and the scale of said map shall be as follows � h 1. For parcels less than 10 acres the map scale shall be at least � 1 inch = 50 feet with a contour interval of 10 feet. � � 2, For parcels consisting of 1� to 200 acres the mapscale shall � be at least 1 inch = 200 feet with a contour interval of ten A feet, � :�. 3. For parcels greater than 200 acres, the map scale sha11 be at y least 1 inch = 400 feet with a ten foot contour interval. � E. Slope may be expressed either in percent (change in vertical elevation :; over a given horizontal distance) or degree of angle. Sane sample ';$ equivalencies are as follows: '�"- Percent 51ope Equal to Angle of - 100.00 45° 00' 50.00 26° 34' '` 45.00 23° 00' '"3 30.00 17° 00' 25.00 14° Z4' �}� 20.00 11° 19' 14.29 8° 08' 10.0� 5° 43' ;`, • ¢ . 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