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be submitted with the conceptual site drainage plan: a) 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. b) 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 casing is lowered into the hole with a minimum of 12" extending above the surface of the existing grade. c) 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 sur- face. The bottom of the casing shall be pointed. Exfiltration increments shall be measured with a suitable gauging device. d) 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. e) 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 by a registered professional engineer licensed to practice in the State of Florida. The County Planning Department must be notified at least 24 hours in advance of the tests being conducted and reserves the right to witness the test procedure. Exfiltration rates for designing the site drainage facilities shall be determined by the developer's designer from these tests. Alternate percolation tests procedure may be used if approved in writing by the Planning Department prior to their use. 3. In order to determine the limits required of the disposal facilities, the Planning Department will make a judgment, with the aid of competent engineering advice, based on the data submitted by the applicant with the drainage plan. The data shall at least consist of hydrographs for each of the above storm criteria and disposal curves (actual and required) based upon current suitable site percolation tests as described in 2. through 2e. The Planning Department will make recommendations to the County Planning and Zoning Board for their consideration in formulating their decision. L. ADDTIONAL REQUIREMENTS FOR AFFECTED DEVELOPMENT: 1. It may be necessary for some projects to seek permits from governmental agencies other than the County. In such cases, zoning and building permits will not be issued for -8-