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PSm`12 Sheldon <br /> July 9, 1997 <br /> Page 2 <br /> 3. Based on our computer model and the information submitted by the developer, the 100-year <br /> highwater elevation for the pond is 908.2. This will flood most of the open area on the cast <br /> side of the site. <br /> Recommendation: The highwater elevation is acceptable since the flooding is infrequent and <br /> should not muse any damage to the surrounding vegetation. <br /> 4. It appears that grading is proposed to be completed outside of the property owned by the <br /> developer (as noted in your MEMO to me on July I). During a site visit with the developer <br /> they discussed the possibility of working with the property owner to the north to make sure they <br /> do not change the existing overflow conditions. <br /> Recommendation: The developer will need written approval from the owner to the north <br /> before they proceed. Other options include a storm sewer down the central drive from the low <br /> • area on the property north of the development or moving the far north drive to make sure the <br /> grading occurs on the developers property. <br /> The following table addresses your concerns listed in the MEMO sent to us on July 1, 1997. <br /> 411 Item from SEH comments <br /> your <br /> memorandum <br /> 1 Addressed by the developer when they added storm sewer beginning near the <br /> entrance to the development <br /> 2 Addressed by the developer when they added storm sewer beginning near the <br /> entrance to the development <br /> 3 Addressed as Item 2 above. Also,better use of the land is obtained by using <br /> multiple use detention areas (utilization of the proposed flood area for recreational <br /> use when its not raining)then a pond with unflooded upland surrounding it. <br /> 4 Item 4 above <br /> 5 Item 2 above <br /> RJKlrjkfMER <br /> • S:tdAMMANO WOCX gq Wrp <br />