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#0Z6 <br />options were presented at public hearing. Option ,fl,.which is the recommended option is <br />based on the land use control strategy recommended by CDM, the consultants who prepared <br />University Lake Watershed Study, and the Joint Watershed Work Group. The most basic <br />provisions of this option include a minimum lot size requirement of five (5) acres and a <br />maximum density of one (1) unit per five (5) acres for any development. Cluster <br />subdivisions with lot sizes of not less than one (1) acre are also allowed as well as the <br />creation of a limited number (5) of two-acre lots. As an alternative to the latter <br />provision, the number of new two-acre lots which can be created may be limited to two (2) <br />in order to maintain higher water quality levels. Development standards for impervious <br />surface coverage; stream buffers; placement of streets, driveways, and buildings; and water <br />supply/sewage disposal facilities are also proposed. <br />The CDM study recommends a four percent (4%) impervious surface limitation for five-acre <br />lots, while the proposed 13-Point Agreement of the Watershed Work Group included a four <br />percent (4%) limit for five acre lots, six percent (6%) for two to five-acre lotsk and <br />twelve percent (12%) for lots smaller than two acres. In addition to the Work Group <br />proposal, a more workable six percent (6%) ratio has been proposed by the orange County <br />Planning Department for five acre lots. To account for lots larger than five acres, <br />existing lots of less than five acres, and the limited number of two-acre lots which may be <br />created, a sliding scale of impervious surface ratios is proposed, ranging from four <br />percent (4%) for six-acre lots to fifteen percent (15%) for half-acre lots. <br />Motion was made by Commissioner Willhoit, seconded by Chairman Carey to <br />approve the staff's recommendation. Commissioner Hartwell offered an amendment to the <br />motion to table action on the amendments as presented to Article 4.2.27 and Article 4.2.28, <br />seconded by Chairman Carey. <br />VOTE ON THE AMENDMENT: UNANIMOUS. <br />Commissioner Hartwell offered to amend section 6.25.5.4 by deleting "or <br />closer than twenty (20) feet to the nearest edge of". This amendment failed for lack of a <br />second. <br />VOTE ON THE ORIGINAL MOTION: UNANIMOUS. <br />THE AMENDMENTS APPROVED BY THIS MOTION ARE LISTED BELOW <br />C. Amend Article 4.2..30 Major Transportation Corridor (MTC) District by renumbering the <br />Article to 4.2.31. (This amendment provides space for a new Article 4.2.30 establishing <br />the University Lake Watershed (ULW) District.) <br />D. Amend Article .4 by adding a new Article 4.2.30 University Lake Watershed (ULW) District <br />to read as follows: <br />a. Intent <br />The purpose of the University Lake Watershed (ULW) District is to prevent <br />significant future water quality deterioration in University Lake, a reservoir <br />supplying drinking water to the people of southeastern Orange County. Based on a <br />study entitled Final Report University Lake Watershed Study and dated March, <br />1989, the lake already exhibits some water quality deterioration. Unless <br />additional protective actions are taken, University Lake is vulnerable to <br />additional pollution from eutrophication (nutrient enrichment), toxicants, and <br />sedimentation.