NC0044440_Ammonia Nitrogen Source Compliance_20180201

February 1, 2018
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
City of Chenyville
WASTEWATER TREATMENT PLANT
116 South Mountain Street
Cherryville, North Carolina 28021
Phone [phone]
www cityofcherryville corn
NC DEQ / Division of Water Resources / Water Quality Permitting Section
Attention Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Dear Water Quality Permitting Section,
RECEIVED/DENR/DWR
FEB ® 5 2018
Water Resources
Permitting Section
Subject. Ammonia Nitrogen source Compliance
Cherryville WWTP
NPDES Permit No NC0044440
Gaston County, NC
This letter is in response to Section A. (5) of our new permit
Part 1 states that the permittee shall perform source identification of ammonia nitrogen in the
effluent within six months from the effective day of the permit
The City of Cherryville does not have any "SIU" significant industrial users in our system and
haven't had any since we lost Travis Knits years ago Therefore the Ammonia nitrogen source
would be coming from domestic wastewater from homes and small business in our collection
system
I hope that you find this satisfactory, please contact me at the number below if you have any
questions
Sincerely,
Vv
Larry Wright
Plant Supervisor/ORC
City of Cherryville WWTP
704-435-1739

Permit NCO044440
reporting. Test results shall be reported electronically via eDMR or on DWR Form — DMR -PPA -1 (or on a form
approved by the Director) by December 315' of each designated sampling year The report shall be submitted to the
following address -
NC DEQ / DWR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal facilities
that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional toxicity testing
requirements specified in Federal Regulation 40 CFR 122.210(5) and EPA Municipal Application Form 2A The US
EPA requires four (4) toxicity tests ,for a test organism other than the test species currently required in this permit
The second species tests should be conducted either quarterly for a 12 -month period prior to submittal of the permit
renewal application, or four tests performed at least annually in the four and one half year period prior to the
application The second species tests must be multiple concentration (5 concentrations plus the control). These tests
shall be performed for acute or chronic toxicity, whichever is specified in this permit. POTWs performing NPDES
chronic Cenodaphnia testing should perform chronic Fathead minnow testing POTWs performing NPDES acute
Fathead Minnow testing should perform acute Cenodaphnia testing. POTWs performing NPDES chronic Mysid
shrimp testing should perforin chronic Silverside Minnow testing.
The second species toxicity test results shall be filed with the Aquatic Toxicology Branch at the following address.
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1623
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional toxicity
tests and reporting requirements Results should also be summarized in Part E (Toxicity Testing Data) of EPA
Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting Unit
A. (5) SCHEDULE OF COMPLIANCE FOR AMMONIA NITROGEN [G.S. 143-215.1(B)]
1. Within six months from the effective day of the permit, the permittee shall perform source identification
of ammonia nitrogen in the effluent.
2 Within 1 %2 years from the effective date of the permit, the permittee shall submit to the Division of
Water Resources a Corrective Action Plan summarizing the actions to be taken to achieve compliance
with ammonia nitrogen and schedule of activities to implement this plan.
3. Within 2 '/2 years from the effective date of the permit, the permittee shall submit a report to the Division
summarizing the actions taken in accordance with the corrective action plan.
4 Achieve compliance with Ammonia nitrogen limits (See condition A. (2) ) by May 1, 2020
Upon approval of the Corrective Action Plan by the Division, the report and actions become an enforceable part of
this permit Any modifications to the schedule shall be requested to the Division at least ninety (90) days before the
deadline Modifications to the schedule in excess of four months will be subject to public notice.
A. (6) ELECTRONIC REPORTING OF MONITORING REPORTS [G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports The
final NPDES Electronic Reporting Rule was adopted and became effective on December 21, 2015
NOTE. This special condition supplements or supersedes the following sections within Part H of this permit (Standard
Conditions for NPDES Permits):
Page 7of10