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Mr. Scott Harlicker <br /> • <br /> February 16, 2000 <br /> Page Two <br /> 6. There is a trench drain shown at the point where the driveway access to the basement <br /> meets the garage door. The elevation at the top of this trench drain is 983. This is also the <br /> approximate elevation of the outlet to the TH169 ditch. Obviously, gravity flow cannot be <br /> used to convey stormwater away from the trench drain. There will likely need to be some <br /> type of pump with a force main that should be conveyed to the catch basin in the parking lot <br /> rather than directly to the highway ditch to prevent any type of erosion. <br /> 7. In the southeast corner of the parking lot, the elevation of the curb surrounding the parking <br /> lot is 994.31. Approximately 15 feet away, the boulevard elevation of Evans Street is 990. <br /> This will provide a very steep bank leading from the parking lot to the boulevard of Evans <br /> Street. We suggest that a small retaining wall of approximately two feet would be better <br /> suited here to make the transition from the parking lot grade to the boulevard in an attempt <br /> to maintain a relatively flat boulevard area along Evans Street. <br /> If you have any questions regarding any of these comments, please call. <br /> Sincerely, <br /> Howard R. Green Company <br /> • y6Z4/P1/aal-e41 <br /> Terry J. 6aurer, P.E. <br /> TJM:mw <br /> • <br /> 0:\PROD\809480)\0240\IV 2-15-00 '• ow.a4 C R. Green Company <br /> CONSULTING ENGINEERS <br />