"file:///C:From: Jennifer Cline
Sent: Mon Oct 06 16:50:21 2014
To: Garrett Edmunds
Cc: Heather Penni; Dan Huff; Dan Huff
Subject: Possible Solution to Check
Importance: Normal
Hi Garrett,
I did some online research.
1. Hydrostatic Valve: a check valve located in the main drain of a pool to relieve hydrostatic pressure created by the groundwater. The valve allows groundwater into the pool, but does not let water out.
Common Problems & Solutions:
Problem: If the spring loaded top is stuck open, the pool will leak at this location when full.
Solution: Before a pool is full, it’s important to check proper operation. Once a pool is filled and diagnosed as leaking, this could be a common source. Check by lifting and dropping the top to insure a seal.
2. Here is another leak that talks about Hydrostatic valves, it seems that if we had high ground water pressure or sudden surcharge we would see some back wash in the pool and definitely in the drain water. I didn’t see any evidence of that, did you? I would have definitely expected to see dirty water if the ground water was currently an issue.
http://www.wisegeek.com/what-is-a-hydrostatic-valve.htm
It is my guess we have a faulty seal or valve all together.
Jennifer Cline, P.E.
City of Molalla
Public Works Director
O: 503.829.6855 Ext. #218
F: 503.829.3676