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Gordon Witchcr <br />Octobcr 2R, 1996 <br />Pagc 3 <br />E from the end the culvert the creek continues with the same characteristics as Reach A for <br />approximately 200' where the downstream analysis is 1/4 mile downstream from the Site. <br />At this point the upstream basin is over 1,000 acres per our review of the USGS Qued <br />map. Therefore at this point the Site is less than 9.1/1,000 or 1% of the contributing <br />basin. <br />From this point the creek continues with the same characteristics as Reach A for <br />approximately 800'; <br />F The creek enters a culvert which crosses under Central Road (approximately 30' long) <br />�vith unknown diameter (12"7) since the inlet is SO% submerged and the outlet is <br />submerged. There is a house upstream of the inlet on the east side of the flow path that <br />appears to be approximately 3' to 5' above the invert of the c�lvert and approximatcly I' <br />above the crown of the Central Road pavement; <br />G From the culvert the creek continues with the same characteristics as Reach A for <br />approximately 1,000'; <br />H The creek discharges into an existing pond/backwater area of approximately 5 to 8 acres; <br />From the pond the creek continues with much broader flow passing through a 5' x 12' <br />concrete crossing with flared entry/exit, a large private arch culvert and then through a <br />48" CMP culvert under Airport Road. <br />This concludes the preliminary information to dste. Please review this package and contact me if <br />additional input is req��ired. I look fonverd to receiving the results of your analysis. <br />Sincerely, <br />TRIAI� ASSOCIATES <br />.- <br />�„ " � _ x�� �(ZZ���� <br />Don Hill, P.E. <br />cc: Andy Loos <br />attachments <br />3`z <br />