WQ0006254_Correction_20030516

of W A rFR Michael F. Easley, Governor
William G. Ross Jr., Secretary
Vj North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
i7 Division of Water Quality
May 16, 2003
Mr. James T. Highley
Carolina Water Service of North Carolina, Inc.
5701 Westpark Drive
Charlotte, North Carolina 28217
Subject: Permit No. WQ0006254 Correction
Whalchead Village/Corolla Light WWTP
Wastewater Treatment and High Rate
Infiltration Facilities
Currituck County
Dear Mr. Highley:
In accordance with a telephone request received on May 14, 2003, we are forwarding herewith the
corrected Cover letter and page 4 of Permit No. WQ0006254, issued March 26, 2003, for the subject
facility.
The following corrections have been made to the permit:
Clarify the project name in the subject line of the cover Ietter.
2. Correct the effluent flow parameter to 0.160 MGD.
Please replace the cover letter I" page and Page 4 with the corrected cover letter V page and Page
4 into Permit No. WQ0006254, issued March 26, 2003.
If you have any questions regarding this request, please do not hesitate to contact me at [phone],
extension 375. Thank you for your cooperation.
Sincerely,
A. Bennie Goetze, Jr., P. E.
Nan -Discharge Permitting Unit
Cc: Currituck County Health Department
Washington Regional Office, Water Quality Section
Groundwater Section, Central Office
Groundwater Section, Washington Regional Office
Technical Assistance and Certification Unit
Water Quality Central Files
NDP.0 Files
AMM
Non -Discharge Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
DENR Customer Service Center
An Equal Opportunity Action Employer
Internet http://h2o_eu.state.nc.us/ndpu
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8, Vegetative growth must be kept out of the rotary distribution and high rate spray bed areas at all
times. All vegetation must be removed manually so that minimal disturbance will occur to the
disposal area.
9. The application of chemicals to the distribution field(s) is expressly prohibited.
10. An automatically activated standby power source shall be on site and operational at all times. If a
generator is employed as an alternate power supply, it shall be tested weekly by interrupting the
primary power source.
11. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records of this
maintenance shall be maintained by the Permittee.
12. The chlorine tablets used in the disinfection facility shall be of the kind and type specified in the
plans and specifications approved by the Division.
13. Instrumentation shall be provided on the effluent pumps from the equalization basin to control the
equalization rate. A flow measuring device shall also be provided on the outlet basin to monitor the
equalized flow.
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring deemed necessary by the Division to insure surface and ground water protection will
be established and an acceptable sampling reporting schedule shall be followed.
2. Influent flow shall be continuously monitored and daily flow values shall be reported on Form
NDMR.
The Permittee shall install an appropriate flow measurement device consistent with approved
engineering and scientific practices to ensure the accuracy and reliability of influent flow
measurement. Flow measurement devices selected shall be capable of measuring flows with a
maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of
once per year, and maintained to ensure that the accuracy of the measurements is consistent with the
accepted capability of that type of device. Records of flow measurement device calibration shall be
kept on file by the Permittee for a period of at least three years. At a minimum, data to be included in
this documentation shall be:
a. Date of flow measurement device calibration
b. Name of person performing calibration
c. Percent from true flow
3. As an indicator of proper operation and maintenance, the facility shall produce an effluent in
compliance with the following Iimitations:
Parameter Monthly Average a Daily Maximum c
Flow 0.160 MGD
BADS (S-day, 20°C) 10 mg/1
N113 as N 4 mg/1
TSS 20 mg/l
Fecal Coliform 14 per 100 ml b 43 per 100 nil
The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
a
Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples collected
b during the reporting period.
Monthly average for fecal coliform shall be the geometric mean of all samples collected during the
reporting period.
4