05-0770 Sewerr Review No. 1 090307City of Yelm Sewer Department
September 3, 2007
Re: Samantha Ridge Civil Review #1
The number of tanks needs to be reduced by using larger tanks.
The tank sizes are not called out, and must be, for review.
Reference is made to replacing some of the 10” Sewer main. This existing main is 8”
Why replace any mains?
The proposed Sewer mains under the “Proposed private road” would be considered mainline and would need to be sized accordingly – see Dev Guidelines.
No Pig Ports required only End of Line clean-outs
Existing RW line crossing this property must be shown.
Please show future 12” Sewer Main
The Step System Notes indicate 18” separation of utilities – this is Vertical separation only. 10’ horizontal separation to Water or RW lines.