NC0046728_Comments_20190910

TOWN OF
MOORESVILLE
Wastewater
Deparbnent
Draft Permit Response
Min xao
NPDES Complex Permitting Unit
Jeff Campbell
Environmental Compliance
Supervisor
Town of Mooresville
P. O. Box 878
Mooresville, NC 28115
REDLPjVfl9AC704) 799-4192
'�XEQ/DWp
SEP_ 16 ?0Ig
Water Quality
Permitting Section
September 10, 2019
This correspondence is in response to the Draft Permit for the Town of Mooresville received on
August 19, 2019. The draft has been reviewed, and the Town of Mooresville wishes to submit the
responses below for further review.
Request to keep Copper monitoring only:
Upon review of the analytical data from October 2014 through July 2019, the RRVWVrP
received an effluent test result for this parameter of 28 ug/I on September 19, 2017. Being
that this is the only test result from the reviewed period greater than the newly suggested
monthly average limit of 19.5 ug/I, the Town of Mooresville would like to request that Copper
remain designated "monitor only" during this permit cycle.
Questions about upstream and downstream D.O. and temp:
• As the Town of Mooresville is a participant in the YPDRBA, upstream and downstream D.O.
and temperature samples are waived. However, it is stated in the footnotes of the draft that
during the months of June through September, the RRVWVfP should collect grab samples
3/week for upstream and downstream D O. and temperature. Will the RRVWVrP need to
collect the samples described above during this timefram_e or may that also be waived due to
the Town of Mooresville's participation in the YPDRBA?
• Should the test results of the upstream and downstream D.O. and temperature be submitted
_. _ in our permit renewal application or will this data need to be entered in the eDMR?
Question about upstream hardness:
• The YPDRBA will begin sampling of upstream hardness. If the RRVVWTP should receive
approval from the DVVR-NPDES permitting unit, will that satisfy the permit" condition for
upstream hardness sampling?
Fact Sheet:
• The Town of Mooresville would like to request a copy of the fact sheet for our records, please.
Thank you,
Jeff Campbell

Copper
Daily Max. mg/I
Monthly Avg. mg/I
# of Samples
Method
ML/MDL
Oct 2014
0.00
0.00
1
EPA 200.7
0.005
Dec 2015
0.011
0.011
1
April 2016
0.00
0.00
1
Jan 2017
0.00
0.00
1
Feb 2017
N/A
N/A
0
March 2017
0
April 2017
0.010
0.010
1
May 2017
0
June 2017
0
July 2017
0.012
0.012
2
APAM
August 2017
0.009
0.009
1
Sept 2017
0.028
0.028
1
Oct 2017
0.011
0.011
1
Nov 2017
0.008
0.008
1
Dec 2017
0.007
0.007
1
Jan 2018
0.008
0.008
1
Feb 2018
0.006
0.006
1
March 2018
0.005
0.005
1
April 2018
0.008
0.008
1
May 2018
June 2018
Totals
0.028
0.008
16
RECEIVED/NCDEQ/DWR
SEP 16 zu',9
Water Quality
Permitting Section

Copper
Daily Max. mg/I
Monthly Avg. mg/I
# of Samples
Method
ML/PQL
July 2018
0.01
0.01
1
EPA 200.7
0.002
Oct. 2018
0.005
0.005
1
Jan. 2019
0.000
0.000
1
April 2019
0.000
0.000
1
July 2019
0.0069
0.0069
1
Oct. 2019
Jan. 2020
April 2020
July 2020
Oct. 2020
Jan. 2021
April 2021
July 2021
Oct. 2021
Jan. 2022
April 2022
July 2022
Oct. 2022
Jan. 2023
April 2023
July 2023
Totals
0.010
0.004
5