NC0047384_Report_20181217

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City of Greensboro
L J North Carolina Water Resources Department
December 17,2018 Certified Mail 7003 1680 0001 0763 7447 Return Receipt Requested
North Carolina Department of Environmental Quality
Division of Water Resources Attn:Jordan Lake Watershed Coordinator
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RE: T.Z. Osborne NPDES Total Nitrogen Reduction Schedule Report for CY2018
Submitted in Response to NPDES Permit NC0047384 Part I-A.(4)
To Whom It May Concern:
This correspondence will serve as the City of Greensboro Total Nitrogen Reduction Schedule Report for
CY2018 in order to comply with Part 1-A.(4) of the T.Z. Osborne NPDES permit NC0047384. The permit
includes the following requirements for the 2018 report:
• Complete Package 1 construction of the T.Z. Osborne BNR Project
• Continue construction on Packages 2 and 3 of the T.Z. Osborne BNR Project
• Award construction contract for Package 4 of the T.Z. Osborne BNR Project
• By December 31, 2018 submit report to DWR on activities relating to Packages 1, 2, 3 and 4 of
the T. Z. Osborne BNR Project
• Note: In September 2014,the City of Greensboro decided to continue the Haw River Arm Study
for at least an additional 12 months (through September 2015). Greensboro decided to continue
the study until further notice.
Jordan Lake Haw River Arm Study Update
• The Haw River Arm Study began in October 2013 and includes 2 sampling events per month.
• Two Sampling Sites:Site 055C—Below Pittsboro at the upper end of the Haw River Arm and
Site 055E—Near the Jordan Lake Damon Haw River arm
• All lake sampling and laboratory analyses were conducted by Meritech, Inc., a State-certified
commercial laboratory.
• The following parameters were included in the study:
Field Parameters
Dissolved Oxygen (in mg/I) pH (in standard units)
Specific Conductance (in umho/cm) Temperature (in °Celsius)
Other Parameters
Total Suspended Solids (TSS)—Standard Methods 2540 D(in mg/I)
Turbidity—EPA Method 180.1 (in NTU)
Ammonia-Nitrogen—EPA Method 350.1 (in mg/I)
Total Kjeldahl Nitrogen (TKN)—EPA Method 351.1 (in mg/I)
Nitrate/Nitrite Nitrogen—EPA Method 353.2 (in mg/I)
Total Phosphorus—EPA Method 200.7 (in mg/I)
Chlorophyll a—EPA Method 445.0 (in pg/I)
PO Box 3136. Greensboro, NC 27402-3136 ,www.greensboro-nc.gov .336-373-CITY(2489) .TTY#333-6930

Letter of 12-17-2018
Page 2—T.Z. Osborne NPDES Total Nitrogen Reduction Schedule Report for CY 2018
• The CY2018 Total Nitrogen Reduction Schedule Report contains an interim data summary for
October2013 through August 2018, since the study is on-going.
• A final report will be submitted at the conclusion of the study.
Jordan Lake Haw River Arm Study Interim Data Summary Report(October 2013-August 2018)
• Two hundred thirty-four(234)samples have been collected in the 59-month period.
• Results from Site 055C: Below Pittsboro at the upper end of the Haw River Arm
o 12 WQS exceedances for pH (12/116=10.3%exceedances)
o 11 WQS exceedances for turbidity (11/117=9.4%exceedances)
o 9 WQS exceedances for chlorophyll a (9/117=7.7%exceedances)
• Results from Site 055E: Near the Jordan Lake Dam on Haw River Arm
o 3 WQS exceedances for pH (3/117=2.6%exceedances)
o 8 WQS exceedances for turbidity(8/117=6.8%exceedances)
o 3 WQS exceedances for chlorophyll a (3/117=2.6%exceedances)
• Note: No samples were taken in September 2018 due to Hurricane Florence and high waters
T.Z. Osborne BNR Project Packages Activities Update
• Package 1 of the T.Z. Osborne BNR Project was bid on July 10,2014. Garney Construction was
awarded the project and issued a Notice to Proceed on December 1, 2014. Construction on
Package 1 was completed on October 22,2018.
• Package 2 of the T.Z. Osborne BNR Project was bid on August 28, 2014 and Garney Construction
was awarded the project by the Greensboro City Council on January 6, 2015. Construction on
Package 3 was completed on April 10,2018.
• Package 3 of the T. Z. Osborne BNR Project is being delivered using the Construction Manager at Risk
(CMAR) method and was awarded to Garney Construction by the Greensboro City Council on
November 15,2015. Construction on Package 3 was completed on March 29,2018.
• Package 4 of the T.Z. Osborne BNR Project was bid on September 28, 2017 and Adams Robinson
was awarded the project by the Greensboro City Council on November 14, 2017. The Notice to
Proceed was issued on January 16, 2018. Construction began in February 2018.
Sincerely,
i
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Martie Groomeaboratory and Industrial Waste Section Supervisor
Phone: [phone] Email: [e-mail]
cc: Steve Drew,Water Resources Director/Interim Assistant City Manager(via email)
Mike Borchers,Water Resources Deputy Director(via email)
Elijah Williams,Water Reclamation Manager(via email)
Bradley Flynt T.Z. Osborne ORC(via email)
Alicia Goots, Laboratory Coordinator(via email) .
Julie Grzyb, NCDEQ, DWR NPDES Permitting Section (via email)
Sherry Knight, NCDEQ,Winston-Salem Regional Office Supervisor(via email)
Jenny Graznak, NCDEQ,Winston-Salem Regional Office (via email)