19960237 Ver 2_Report_20160105

P.O. Box 903 Phone: [phone]
Jordan Flydwele&ft Limited Paftership Gatlinburg, TN 37738 Fax: [phone]
E-mail: limpricehydro(cdbellsouth.net Cell: [phone]
January 5, 2016
Karen Higgins, Supervisor
Wetlands, Buffers, Stormwater - Compliance and Permitting Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
Jordan Hydroelectric Project, P-11437 - Water Quality Report for May - October, 2015
Dear Ms. Higgins:
This letter and attachments report the water quality for the summer of 2015 for the Jordan Hydroelectric Project
(Project), P-11437, at B.E. Jordan Damon the Haw River. This information is filed for compliance with the Water
Quality Certificate (Certificate), issued to the licensee (Jordan Hydroelectric Limited Partnership or JHLP) by NC
DWQ on October 4, 2006, and with the license P-11437 issued by Federal Energy Regulatory Commission. As
required in item 3 in the Certificate, water quality was measured below Jordan Dam in the Haw River from May 1
through October 31, 2013. Both average and minimum dissolved oxygen (DO) and average temperature on a daily
basis were measured and are recorded in the attached table.
Hydropower generation began about January 12, 2012; this is our fourth year of generation. Measurements were
made in the Haw River at a depth of about 2 feet and about 100 feet downstream of the stilling basin for the tunnel
discharge. The probes are secured in pipes on a concrete fishing pier on the bank of the river. Measurements were
recorded every half hour. An optical probe was used (Model RDO by InSitu) to measure DO. A thermocouple was
used to measure temperature. The optical probe was calibrated initially and twice weekly thereafter. The
thermocouple does not need calibration. The calibration procedures and frequency are compliant with the
manufacturer's specifications. Measurements of DO and temperature were made continuously during the six month
period and recorded by the plant's computer and control system.
As shown in the attached table and graph, the daily average DO, minimum DO and average temperature are reported
for each day. DO is measured in milligrams per liter and temperature in degrees Fahrenheit. There were no violations
of North Carolina's water quality standards during the measurement period. One low DO value occurred on June 8,
but this was the result of a fouled probe; generation had ceased when the DO decreased below 4.2 mg/l. All valid DO
measurements were within the state standards, equal to or exceeding 4.0 mg/l instantaneously and averaging at or
above 5.0 mg/l in 24 hours.
Measurement Notes
The only circumstance that affected the collection of water quality data in 2014 was fouling of the probe causing the
probe to cease measuring accurately. When the turbines were not generating, measurements were usually made, but
any violations of state standards are not reported. Such violations are rare. Other than the one fouling, there were no
problems with the measurements, and all measurements were valid and are reported. Frequently during the summer
the DO from the turbine is too low and water must be diverted from the turbine and spilled through two water quality
and one service gates in the intake tower. The turbines are not operated when the DO descends to near 4.0 mg/l. The
turbine control system stops generation and opens a gate to spill water until an operator restores generation or
establishes flow bypassing the turbine.

Jordan Hydroelectric Project, Water Quality Report Page 2
January 5, 2016
On June 8 the probe was found to be fouled. It was cleaned and put into service after a few hours. The measured DO
immediately rose from near 4 to 6 mg/l.
The incident when measurement was not reliable because of probe fouling was not included in the summary
information at the bottom of the table. Notes on the table indicate their occurrence.
Low DO in the tailrace continues to cause us to reduce or cease operation to avoid violations. The critical low DO
periods seem to occur at low flow. We have tried several solutions in the past to increase DO, but none have been
successful yet. We plan to try using diffuser tubes with a blower in 2016.
This document is being sent electronically for convenience. A paper copy will be sent to NC DWQ for official use if
requested. Should anyone from your office wish to visit the plant and observe data collection, please call or contact us
via email. Please contact us with any questions.
We must send a copy of your comments to FERC by the end of January. Please respond with any questions or
approval by late January, so we can file with FERC.
Yours truly,
James B. Price
President, W.V. Hydro, Inc.
General Partner of Jordan Hydroelectric Limited Partnership
Cc: Tony Young, Water Control, Wilmington District, USACE
Attachments:
Daily Table of DO and Temperature
Graph of Daily DO

Jordan Hydroelectric Project, Water Quality Report Page 3
January 5, 2016
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January 5, 2016
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