Sewer Land Use Review Crystal Springs PRD 042407City of Yelm Sewer Department
April 24, 2007
Re: Review Planned residential Development Crystal Springs
Since Unit size is not given, it is impossible to determine tank size --- If these units are 3 bdr. Or less, the 6 unit building can best be served by a min. 4500 gal. STEP tank. The
3 & 4 unit buildings should have a min. 3000 gal. Tank each.
The pump arrangement is not given, but I would expect to see Duplex type systems.
The new Sewer Main should be tapped into the existing 12” main, with separate service lines & valve boxes to the respective tanks.
The plans do not address the existing 12” sewer main crossing this property.
The plans do not address the existing Reclaimed water line crossing this property.
The plans do not address the proposed new 12” sewer main planned for future use.
The plans need to include hydaulic profiles for #’s 4, 5,& 6 above, and the proposed new on site main to serve this development.
The location of the Pump Control Panels must to be shown on the plans.
Be advised: the new profiles for any changes to the existing Sewer or Reclaimed water mains may require an Air Release Assembly to be installed.
Hose bibs are required within 50 feet of each tank location.