water quality issuesI talked with Ken Delregno with DWU. I asked several questions wanting
to get an understanding so we could figure what, if any, adjustments are
needed, He expressed concerns about the hardness, chlorides and
fluorides. Says it has been going on a few weeks and took him and his a
staff a while to realize the possible linkage with North lake. He said
that the chlorides are what some clients are concerned about,
particularly hospitals. They can treat it, but they don’t like it and
have been complaining to him. He said they are doing some more tests and
will likely have some results and be in a position to talk tomorrow. He
say he would most likely ask us to cut the pumping rate in half or some
other significantly reduced rate.
I checked USGS records for the last few weeks and at the gauge at 348,
flows have generally been between 100 and 200 cfs, so our pumping has
been roughly half the flow. Right now the flow on the elm fork is up
around 600 cfs at Hiway 348 so there should be considerable dilution
going on currently. It peaked at about 850 last night. I will let you
know what he says tomorrow.
It will likely be back to 200 cfs by sometime tomorrow morning.. Its
clear North Lake’s chlorides are about double the natural in the river
and so we may need to work out releases as a percentage or something.
Michael, did you get any rise in the water level from the rain?
I know you’ve pumped about 2/3 of the water. Other than the obvious
longer time, what is the impact to you and the project of a lower
pumping rate? Is it a variable speed pump that could be reduced or is it
an on/off type pump? I would like to figure out some options to have
handy when I talk to him tomorrow.
Thanks,
John
John Rutledge
Freese and Nichols, Inc.
4055 International plaza, St 200
Fort Worth, TX 76109
(817) 735-7284
jlr@freese.com <mailto:jlr@freese.com>
Please consider the environment before printing this message.
This electronic mail message is intended exclusively for the individual
or entity to which it is addressed. This message, together with any
attachment, may contain the sender's organization's confidential and
privileged information. The recipient is hereby notified to treat the
information as confidential and privileged and to not disclose or use
the information except as authorized by sender's organization. Any
unauthorized review, printing, retention, copying, disclosure,
distribution, retransmission, dissemination or other use of, or taking
of any action in reliance upon, this information by persons or entities
other than the intended recipient is prohibited. If you received this
message in error, please immediately contact the sender by reply email
and delete all copies of the material from any computer. Thank you for
your cooperation.