NCG551797_Fact Sheet_20230420

FACT SHEET FOR GENERAL PERMIT NCG550000
Discharge of Domestic Wastewater from Single Family Residences
and
Other 100% Domestic Discharges with Similar Characteristics
Basic Information
Permit Writer / Date
Siying Chen 3/17/2023
Permit Number
NCG551797
Owner Name
Michael Maller
Facility Address
105 Dublin Road, Chapel Hill, NC 27516
Count / Regional Office
Orange / RRO
Basin Name / Sub -basin number
Cape Fear / 03-06-06
Receiving Stream / HUC
Jones Creek / 030300020603
Stream Classification / Stream Segment
WS-V; NSW / 16-41-1-15-1-1
Latitude/Longitude
35° 57' 54.84" N, 79° 06' 21.22" W
Facility Overview:
3-Bedroom (360 gallons per day) single family residence; has an unpermitted, pre-existing failing
subsurface discharge system. Currently operating as a pump and haul as a result of the failing
conventional septic system.
The proposed system will replace the existing system with an Advantex AX-20 Pod system. Outfall will
be located in an existing pond on the southwest corner of the property, discharging onto riprap (post
aeration) into the Public right -of way. The Public right-of-way leads to an unnamed tributary to Jones
Creek, where the pond meets applicant's driveway.
Proposed Improvements/Construction:
Replacement of the existing treatment system with the following new treatment system:
• Septic Tank with Effluent Filter
• AdvanTex AX- 20 RT Pod
• Re -circulation Pump Chamber (Integrated into AdvanTex Pod System)
• UV Disinfection
• Discharge Pump Chamber (Integrated into AdvanTex Pod System)
• Discharge Point with Rip -Rap
Hydrologic Trespass:
Discharge point will be in an existing pond located on the southwest corner of the property, and
discharging into the Public right-of-way.
Page 1 of 2

Staff Report:
Staff report received from RRO (Jane Bernard) on 1 /13/2023. RRO recommends issuance.
Alternatives Summary (EAA):
Connection to an Existing Wastewater Treatment System
o Orange Water and Sewer Authority indicated that the property is not within its service
area, Connection to the existing sewer would require an extension of approximately 1,400
linear ft. from the property. At $100/foot of installation cost, the estimated costs would be
approximately $140,000, plus additional cost of the pump station, potential tap or sewer
capital fees, road repair costs, frontage fees and fees for right-of-way permits.
Land Application
o Orange County Environmental Health Department issued a denial letter on 8/23/2022
indicating that the site is unsuitable for installation of a ground absorption sewage system
and disposal (septic) system due to unsuitable soil characteristics and unsuitable wetness
conditions.
o Agri -Waste Technology, Inc. performed a soil evaluation and indicated that the soils on
the property are unsuitable for subsurface and surface application wastewater systems de
to shallow wetness conditions, shallow depth to saprolite, and insufficient space.
Wastewater Reuse
o The existing residential plumbing infrastructure does not allow for reuse in the existing
residence. It is not feasible to consider using reclaimed water on the site or becoming a
bulk distributor of reclaimed water.
Direct Discharge to Surface Waters
o The United States Geological Survey indicated that the 7Q10 and 30Q2 are assumed to
be 0 since the site is well below the drainage area threshold.
Combination of Alternatives
o There are no viable combinations of the above due to soil and cost limitations.
Page 2 of 2

Raleiqh Reqional Office - SWP SFR (NCG55) Staff Report Form
Verify permit Information against BIMs Information. Note any corrections required.
Date 13-Jan-23
To:(Permit Writer's Name) RO Contact Person: Jane Bernard
Regional Office RRO
Permit Number NCG551797
Permittee Michael Maller
Facility Name/Address 105 Dublin Road, Chapel Hill 27516
Facility County Orange
Maximum permitted flow �2_0-May-22
60 gallons/day
Date of Last inspection
Why is the permit needed? What is triggering the need for a Permit?
Unpermitted properly functioning sandfilter discharge system
Unpermitted failing sandfilter
X Permitted failing conventional septic system
Failed subsurface system
Expanding capacity of existing discharging system
Building a new single-family home, requesting a new coverage under NCG55
Functioning existing subsurface system: Owner can't expand existing system due to site constraints.
new discharging system to accommodate existing and new flow.
FX Other: Orange county has facility opeating as a pump and haul as a result of the failing conventional
septic system.
Possible alternatives: spray irrigation sewer
Describe alternatives: NONE
Location of proposed/new Discharge Point(s):
subsurface discharge none other
Latitude 35057'54.84" N JApproximate
Longitude 79006'21.22 W
Describe the outfall point in detail using information from the Addendum
Facility will be replaced with an Advantex AX-20 Pod system. Outfall will be located on the applicants property
next to Dublin Road, discharging onto riprap (post ariation) into the Public right -of way. The public right-of-way
leads to an unnamed tributary to Jones Creek. here the pond meets applicants driveway.
Outfall drains to: River Basin Cape Fear Receiving Stream Jones Creek
Sub -basin CPF06 (03-06-06) Stream Classification WS-V: NSW
Stream Index 16-41-1-15-1-1
Review Special Conditions/suggested changes/additional information needed/setback violations
RO Recommendation
The RRO does not object to modifying/upgrading the existing failed facility and the
issuance of this permit in accordance with the current policy of Single Family NPDES
Discharge.
Docu Signed by:
Supervisor approval: _ �/atnc SSa `L. k.avuAt Date: 3/13/2023
B2916HAB32144F...