NC0032662_Staff Report and Recommendations_20150218

SOC Priority Project: No
To: Complex Permitting Unit
Attention: Teresa Rodriguez Date: February 18, 2015
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Catawba
NPDES Permit No.: NC0032662
PART I-GENERAL INFORMATION
1. Facility and Address: Claremont North WWTP Physical Location
City of Claremont 3076 Centennial Blvd.
PO Box 446 Claremont,NC 28610
3288 East Main Street RECEIVEDIDENR/DWR
Claremont,N.C. 28610
FEB 2 5 2015
2. Date of Investigation: February 6,2015
Water Quality
Permitting Section
3. Report Prepared By: Wes Bell,Environmental Specialist
4. Person Contacted and Telephone Number: Jody Ledford/ORC [phone]
5. Directions to Site: From the junction of I-40 W and N. Oxford Street(Exit 135),take a left
onto N. Oxford Steet and travel 0.2 miles and turn left onto Centennial Blvd and continue
0.2 miles. The WWTP's entrance(gravel drive)will be on the left.
6. Discharge Point(s),List for all discharge Point:
Outfall 001 (Google Earth)
Latitude: 35°43' 29"
Longitude: 81°09' 18"
See USGS Map included with the renewal application for specific location of the outfall.
USGS Quad No.: E 14 NW
7. Receiving Stream or Affected Surface Waters: Mull Creek
a. Classification: WS-IV
b. River Basin and Subbasin No.: Catawba, 03-08-32
PART II -DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater and description of wastewater source(s)of each outfall:

Page Two
Outfall 001 —0.100 MGD— The existing dual train WWT facilities consist of the
following:
0.040 MGD train—coarse bar screen,aeration basin(diffused aeration), final clarifier,
aerated sludge holding tank
0.060 MGD train—coarse bar screen, aeration basin(mechanical hnd diffused aeration),
final clarifier, aerated sludge holding tank
Both trains share the following: influent flow-splitter(headworks), gas chlorination, chlorine
contact chamber, gas dechlorination, flow measurement
b. Pretreatment Program: N/A
PART III - OTHER PERTINENT INFORMATION
1. Special monitoring or limitations (including toxicity)requests: None Requested.
PART IV -EVALUATION AND RECOMMENDATIONS
The WWTP was in the process of recovering from an upset. There are O&M issues
associated with the disinfection and dechlorination gas systems that need to be addressed. In
addition,the wastewater facility does not have standby power(stationary or portable). This office
has requested(via Compliance Evaluation Inspection Report)that the City address these O&M
issues and how the facility will comply with the Reliability requirement(15A NCAC 2H .0124).
Note: A copy of the City's responses will be forwarded to the permit reviewer.
It is recommended that the subject Permit be renewed following review(including reliability
evaluation)by the Division's Permitting Staff.
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Signature er Date
Water Quality Regional Supervisor to