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DESIGN CONCEPT - DRAINAGE <br /> 1 . An adjacent property owner owns land between Thornton Road and I-5, <br /> a 30" culvert under I-5, and land with access to the north branch of White <br /> Slough. He has indicated a strong willingness to enter into a contract with <br /> the developer (and through him the Maintenance District) whereby he will <br /> accept the storm run-off, and treated effulent on the west side of Thornton <br /> Road and discharge it through his irrigation canals. The State has given <br /> verbal permission to cross their Peripheral Canal R/W. <br /> 2. To keep papers and other debris out of the drainage system, we will ask <br /> the Board to expand the scope of the Maintenance District to include street <br /> sweeping at least every other week. <br /> 3. On Exhibit 3 those areas shown in blue will be lakes. They will provide <br /> tanker water for fire departments, if required, and will not take street <br /> run-off. <br /> 4. When fully developed, the run-off from this project during a heavy intensity <br /> storm will probably exceed the capacity of the 30" culvert under I-5. The <br /> SD lines discharging from the subdivision will be downsized to limit the rate <br /> of discharge. Excess run-off will be stored in oversized storm drains and <br /> the landscaped depressions, as shown in green, will be allowed to flood. I <br /> expect this to happen only a couple of times a year, and I do not expect <br /> water to stand more than an hour or so. Under these constraints I see no <br /> reason to keep more than a foot or so distance between the bottom of the <br /> depression and the ground water. <br />