Ord 2002-046 - Laserfiche WebLink

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wastewater facilities will comply be done in accordance with applicable #le state regulations water development board's Edvi'ards Rule. (b) Individual disposal systems. Unsewered IJots overlying the Edwards Aquifer recharge zone that are not connected to a public wastewater system shall use sewage disposal systems that are installed in accordance with applicable the requirements of the state regulations '.vater developmcnt board's Edv{ards Rule. Sec. 94.107. Street and drainage improvements. Plans for street and drainage improvements located within developments reqUlrIng compliance with this article shall be designed '.vith runoff computed on the basis of a 25-year frequency rainfall, in accordance with the City of Austin Drainage Criteria Manual as of the effccti'/e date of the ordinance from which this article derives. Sec. 94.108. Impervious cover requirements limitations. (a) No person shall develop land, a tract, a parcel or a lot, requiring compliance with this article, for the city that has a slope of 15 per cent gradient or greater or that has highly erodible soils, as identified in section 94.111, so as to create impervious cover in excess of 35 per cent on slopes from 15 per cent gradient to 25 per cent gradient or in excess of 20 per cent on slopes over 25 per cent gradient. The maximum impervious cover percentage requirement shall only apply to those areas on a parcel of land that are not covered with impervious cover as of the effective date of the ordinance from which this article derives May 6, 1982. The impervious cover requirement will pertain to all area within the development which is shown to be on 15 per cent slope or greater by topographical survey performed by a registered surveyor. Those areas within the development that are not on slopes of 15 per cent or greater may be developed to the maximum allowed under applicable laws. (b) Slope contours will be based on existing topography prior to the initiation of grading or fill work at the site at the time of the effectivc date of the ordinance from 'Nhich this article derives. Sec. 94.109. Drainage easement dedication requirements. (a) Public drainage easements shall be dedicated to the City by the owner of property to be developed for the purpose of containing all drainage improvements, open or enclosed, and all storm water flows to the limits of the 100-year floodplain as determined in accordance with anticipated fully-developed contributing area land use conditions, and to allow continuous access for operation, maintenance and rehabilitation of all drainage improvements. Drainage improvements that serve streets or other public property may be dedicated in a public street right-of-way rather than a drainage easement, subiect to the approval of the director of engineering. C:\TEMP\Drainage Interim Amendments.doc 8