WQ0000100_Compliance Evaluation Inspection_20231214

DocuSign Envelope ID: 77040D15-20E54DDD-934D-561 E79F7BED3
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Bruce W. and Lisa 0. Knott
7802 Grandale Drive
Durham, NC 27713
Mr. Knott,
NORTH CAROLINA
Environmental Quality
December 14, 2023
Subject:
Compliance Evaluation Inspection
Permit # WQ0000100
Facility: 7802 Grandale Drive
Chatham County
On December 14, 2023, Jim Westcott from the Raleigh Regional Office visited your Single-family
residence wastewater treatment and spray irrigation system to evaluate compliance with the
subject permit. The assistance of Mr. Knott at the time of the inspection was appreciated.
The facility is permitted for the operation a .00036 (MGD) wastewater treatment and irrigation
facility consisting of a .001 gallon septic tank; a distribution box; a 330 ft2 subsurface sand filter; a
tablet chlorinator; a .003-gallon chlorine storage/chlorine contact/pump tank with a 12.4 gpm
submersible pump; a 0.23-acre spray irrigation area with six sprinkler heads and all associated
piping, valves, controls, and appurtenances with no discharge of wastes to surface waters.
The permit, which was issued October 17, 2018, is effective through March 31, 2024. Division
records indicate the required annual fee for the period ending June 30, 2024, due July 23, 2023, has
been paid.
Findings during the inspection were as follows:
1. Treatment system Operation: The wastewater treatment system shall be effectively maintained
and always operated so there is no discharge to surface waters, nor any contravention of
groundwater or surface water standards. The treatment system components are to be inspected
weekly and monthly by the permittee.
At the time of inspection, the permittee gave a comprehensive tour of the facility, The system
components were evaluated for proper operation at the time of inspection.
2. Pumping the septic tank: You are required to inspect the septic tank annually to determine if
solids must be removed or if other maintenance is necessary. Septic tanks
should be pumped out every five years or when the solids level is found to be more than 1/3 of the
liquid depth in the septic tank compartment, whichever is greater. A pumping company can check
NORTH CAROLI D ��J
North Carolina Department of Environmental Quality I Division of Water Resources
Raleigh Regional Office 1 3800 Barrett Drive I Raleigh, North Carolina 27609
919.791.4200

DocuSign Envelope ID: 77040D15-20E5-4DDD-934D-561 E79F7BED3
the status periodically and determine when pumping is required. The non -discharge permit
requires the permittee to retain records associated with residuals disposal for a period of 5 years.
A receipt of the volume of residuals removed from the facility dated 212022 was provided at
the time of inspection.
3. Disinfection: The system uses a tablet chlorination disinfection unit for disinfection of
wastewater. The chlorination tablet disinfection system provides effective disinfection and reduces
harmful bacteria from entering the environment. The chlorine tablet disinfection system should be
checked weekly to ensure proper disinfection of the wastewater prior to spray irrigation. The
tablet chlorinator was located at the time of inspection. The tablet feeder had tablets in the
chlorinator. A supply of the correct tablets were on site. The control junction box and electric
power tie in had recently been replaced with a new support panel.
4. Proper Operation and Maintenance: The system shall be inspected monthly to make certain of
the proper operation of the spray and irrigation system and that the sol is assimilating the disposed
treated wastewater with no surface runoff, and that no objectionable odors are being generated.
Any visible signs of a malfunctioning system shall be documented, and steps taken to correct the
problem. At the time of inspection, the spray irrigation system was evaluated for operation. The
spray field vegetative cover was in good condition, there was no evidence of surface runoff or
ponding. The spray field fence was secure and in good condition.
Please continue to periodically inspect and evaluate the wastewater spray irrigation system
components are properly maintained and operating as designed. Maintain all associated
operational records onsite for a period of five years as required by the subject permit.
If you have questions or comments about this inspection or the requirements to take corrective
action (if applicable), then please contact Jim Westcott at iames.westcott@ncdenngov or 919-791-
4247.
Sincerely,
ocuSigned by:
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2916E6AB32144F...
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
Cc: Laserfiche
REQ5 North Carolina Department ofEnvironmental Quality I Division ofWater Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
naparMeM of EmironmanW 9uallly

DocuSign Envelope ID: 77040D15-20E5-4DDD-934D-561 E79F7BED3
REQ5 North Carolina Department ofEnvironmental Quality I Division ofWater Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
onparhnem of EmironmanW 9uallly