Arbor Manors-CS091006Page 1 of 1
Keith Marvin - Arbor Manors Sanitary Sewer
From: "Casey Ross" <cross daa- civil com>
To: "Keith Marvin" <kmarvin(�'.&i.coppell.tx.us>
Date: 10/6/2009 5:15 PM
Subject: Arbor Manors Sanitary Sewer
CC: "Michael Garza" <mgarzagci.coppell.tx.us >, "Matt Alexander" <malexandergdaa-
civil.com>
Attachments: Arbor Manors San Sewer
Keith,
I have attached an exhibit to show all of the existing flow line elevations of the sanitary sewer lines in Sandy Lake
Road as well as the sanitary sewer line just to the west of our property. The flow line where Line "J" connects to
the existing line is 476.29. The elevation out of the manhole downstream is 477.00. This will result in 0.71' of
standing water in the manhole at the downstream end of Line "J ". The lowest finish pad on the job is at an
elevation of 491.1. This is well above the 477.00. The rim elevation of the manhole at the downstream end of
Line "J" is 484.00. There should not be any sewage coming out of the manhole. The flow line out of the
manhole downstream and to the west of the 477.00 manhole is 476.11 (not pictured on the exhibit) which
shows positive drainage between the two. Please review and let me know if you have any questions or need
any additional information.
Thanks,
Casey Ross, P.E.
Dowdey, Anderson & Assoc.
5225 Village Creek Drive, Suite 200
Plano, TX 75093
972 - 931 -0694 (0)
469 -576 -1039 (C)
972 - 931 -9538 (F)
file: HC: \Documents and Settings \radloo \Local Setting s\Temp\XPgrpwi se\4ACB 7B 42 City_... 8/30/2010
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