Agenda - 02-28-1990 - Laserfiche WebLink

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29 PROPOSED AMENDMENTS TO THE ORANGE COUNTY ZONING ORDINANCE TO IMPLEMENT THE UNIVERSITY LAKE WATERSHED PROTECTION STRATEGIES Listed below are proposed amendments to the Orange County Zoning Ordinance. If adopted, the amendments would implement the strategies for watershed protection identified in the Final Report - University, Lake Watershed Study dated March, 1989, and the basic strategies identified in the proposed 13-point agreement prepared by the Joint Watershed Work Group and dated October, 1989. Two options are presented for consideration. Option 11 is based on the land use control strategy recommended by Camp, Dresser & McKee (CDM) , the consultants who prepared the University Lake Watershed Study, and the Joint Watershed Work Group. The most basic provisions of Option #1 include a minimum lot size requirement of five (5) acres and a maximum density of one (1) unit per five (5) acres for any development. Cluster subdivisions with lot sizes of not less than one (1) acre are also allowed as well as the creation of a limited number (5) of two- acre lots. As an alternative to the latter provision, the number of new two-acre lots which can be created may be limited to two (2) in order to maintain higher water quality levels. Development standards for impervious surface coverage; stream buffers; placement of streets, driveways, and buildings; and water supply/sewage disposal facilities are also proposed. The CDM study recommends a four percent (4%) impervious surface limitation for five-acre lots, while the proposed 13-point agreement of the Watershed Work Group included a four percent (4%) limit for five- acre lots, six percent (5%) for two to five-acre lots, and twelve percent (12%) for lots smaller than two acres. In addition to the Work Group proposal, a more workable six percent (6%) ratio has been proposed by the Orange County Planning Department for five-acre lots. To account for lots larger than five acres, existing lots of less than five acres, and the limited number of two-acre lots which may be created, a sliding scale of impervious surface ratios is proposed, ranging from four percent (4%) for six-acre lots to fifteen percent (15%) for half-acre lots. Option lZ is based on the structural best management practice approach recommended by CDM. The provisions of Option #2 are similar to Option #1 except that a minimum lot size of two (2) acres and a maximum density of one (1) unit per two (2) acres is allowed. A twelve percent (12%) impervious surface limitation has been proposed by the Orange County Planning Department for two-acre lots in lieu of the six percent (6%) limit recommended by CDM. In the case of the Orange County Planning Department proposal, the same sliding scale for lots larger than or smaller than two acres as proposed above would be applicable. Rather than providing for regional stormwater detention ponds as recommended by CDM, Option #2 would require the provision of on-site facilities to trap pollutants. Both Option #1 and Option #2 are being presented at a special public hearing on February 28, 1990. The proposals involve amendments to Orange County's Zoning Ordinance and require only the approval of the