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2. A site plan which shows lands to be dedicated for road right-of-way will be issued a zoning permit only after the deed(s) for the right- of-way has been recorded as part of the Public Records of Indian River County, Florida. ADDITION TO APPENDIX A, SECTION 23 (SITE PLAN APPROVAL) OF THE INDIAN RIVER COUNTY ZONING ORDINANCE 71-3 SUBSECTION (K) STORMWATER RUNOFF CONTROL CRITERIA AND PROCEDURES The Site Drainage Plan shall include at least the following provisions: 1. The project shall include practical means of reducing the amount of pollution generated by the project to a level compatible with Florida Water Quality Standards found in Chapter 17-3, 17-4, and 17-6 dated March, 1979, of the Florida Administrative Code; i.e., Department of Environmental Regulation requirements shall be met including the retention and disposal by percolation of at least the first one inch of runoff. Skimming devices may be required where applicable and practical. 2. Runoff generated by the project (which may be defined as any new structures, additions to existing structures and/or other site improvements proposed by the applicant) shall be disposed of on the site by percolation unless sufficient capacity is available in the existing drainage facilities (or any practical combination thereof). The maximum quantity of runoff to be disposed of shall be that computed based upon a 25 year frequency storm with the minimum amount being that computed upon a 3 year frequency storm. Rainfall intensity -duration information for calculating runoff shall be based upon the curves prepared by Florida DOT for the Jacksonville Zone 3 area. Site capability for runoff retention shall be determined by current suitable -site percolation tests and as further determined by the practicality of the on site storm water facilities. The following percolation test procedure is required to be submitted with the conceptual site drainage plan: i. The test holes should be located as close as possible to the proposed location of exfiltration trench (vertical and horizontal) and if critical to a depth two (2) feet below the water table (MSL) at the time of the test. ii. A hole for each test of about 12" diameter or as required for a maximum clearance of 1/2" between the hole and the test casing is augered to the required depth and the casing is lowered into the hole with a minimum of 12" extending above the surface of the existing grade. . iii. The test casing shall consist of an approved pipe that is at least 8" in diameter with perforations for about the bottom 75% of the length as measured from the surface. The bottom of the casing shall be pointed. Exfiltration increments shall be measured with a suitable gauging device. iv. Fill the test bore to 6" above the surface of existing.grade and run test no later than two (2) hours after level has exfiltrated to below surface of existing grade. In all cases test runs to start only after the first 2" have exfiltrated. v. Run tests for at least 30 minutes and record as a minimum -- date, weather, project name, test run by, test number, location on site, sketch of hole and casing, ground water conditions, incremental drop and time, and subsurface soil information. Information shall be tabulated and attested to bya registered professional engineer licensed to prac- tice in the State of Florida. The County Planning Department must be notified at least 24 hours in advance of the tests SEP 51979 31 Bou- 41 PnF 477