05-0091 Sewer #4 102908CITY OF YELM SEWER DEPARTMENT
October 29, 2008
Re: 4th Review WalMart Step Tank SPR-05-0091
Need to supply Yelm Sewer Dept. with full submittal on new proposed tank that includes:
Location of all (3) risers
Length of inlet “T” ‘down pipe’
Method of supporting inlet ‘T’
Invert elevation of inlet pipe
Elevation of top of traffic bearing cover over inlet to tank.
Method of supporting new outlet “T” in existing tank, as this “T” will need to be located below the existing riser.
Baffle in new tank to have 3, 6” holes located 40” above floor of tank, not 12” as shown.
Inlet and outlet “T” in both tanks to be extended up to top of tank, just below the risers.
A Fernco rubber adapter (or equal) should be installed in the pipe connecting these 2 tanks to prevent breakage due to any tank settling