20080675 Ver 2_Staff Comments_20090224

Project Name: Traditions (Ammons Mountain Properties, Inc)
DWQ Project #: 08-0675v2
Date: 2/24/09
After careful review of your additional information dated February 17, 2009, the DWQ
has determined that the measures proposed and described to ensure minimum water
release are acceptable. However, this office recommends the following:
1. The minimum release (low flow) pipe is at least 4 inches in diameter (6 inches
preferred), fitted with an end cap, and a 2-inch hole (orifice) drilled into the cap.
This will ensure ease of maintenance in case there is clogging.
2. Please raise the low flow pipe at least 6 inches above the floor (current elevation
2487.5 feet) to further minimize any potential for clogging of the orifice.
3. That the pipe material should be strong enough to carry the surcharge from the
10-feet earth material plus vehicular traffic on the pavement. In this sense, we
suggest that you consider using a ductile iron pipe (DIP) instead of PVC.
4. Please ensure that all pipes through the berm shall be provided with seepage
control (anti-seepage) measures.
Please submit revised plans and cross sections of the impoundment on Sheet DI I
showing the minimum water release pipe, primary outlet structure, emergency spillways
and major pool levels.