NCG551752_Application_20180810

&WIT
Engineers and Soil Scientists
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex, North Carolina 27502
919-859-0669
www.agriwaste.com August 10, 2018
Mr. Charles Weaver
NPDES Permitting Program
Division of Water Quality RECEIVED/DENR/DWR
1617 Mail Service Center
Raleigh,North Carolina 27699-1617 AUG 2 0 2018
Water Resources
Permitting Section
RE: Application for Discharge System—Durham Polaris
106 Stallings Road, Durham, NC 27703
Dear Mr. Weaver,
Enclosed please find information supporting an application for a discharge system for an existing
retail facility (Durham Polaris) located in Durham County, North Carolina. The proposed
system will replace a failed sub-surface system that served the facility. The site has been
deemed unsuitable for ground absorption sewage treatment systems by the Durham County
Environmental Health Department due to inadequate soil conditions and unsuitable topography.
The site's system was originally sized for a 3-bedroom residence at 360 gpd, which has since
been altered into the current retail facility. No modifications were made to the original treatment
system during this transition. The proposed system is to be sized for 360 gpd and has been
designed to convey all wastewater from the facility, including greywater, to the proposed septic
tank.
This application is being submitted with the intent to have coverage under the NCG55 General
Permit. Coverage under this permit is sought to replace a failed sub-surface system.
The following information is included with this letter:
- Notice of Intent(NCG550000). Attachment A.
- $60 check payable to North Carolina DENR.
- Documentation from Durham County Health Department. Attachment B.
- Letter requesting coverage under the General Permit. Attachment C.
- Letter requesting Authorization to Construct. Attachment D.
- Soils Evaluation report by Chris McGee of AWT, Inc. Attachment E.
- Correspondence from USGS. Attachment F.
- Flow Path to "Blue Line" Water Feature.Attachment G.
- Engineering Alternatives Analysis(EAA).Attachment H.
- - — --- - Local Government Review Forms. Attachment I.

Plans and Specifications for the Proposed System. Attachment J.
The discharge point is in a roadside ditch off the southeastern property line that will flow
east into a tributary to Little Lick Creek. This discharge point is located in the right-of-
way for Patterson Road. The discharge system will utilize the following components:
- New Septic Tank with Effluent Filter
- AdvanTex AX-20 RT Pod
- Re-circulation Pump Chamber(Integrated into AdvanTex Pod System)
- UV Disinfection
Discharge Point with Rip-Rap
Flow Path to "Blue Line"Water Feature
The proposed discharge location is in a roadside ditch along the applicant's southeastern
property line. This roadside ditch flows into an existing drainage easement, running from
the roadside ditch and to the north through the applicant's property. Flow continues
running north into an un-named tributary to Little Lick Creek, the Blue Line Feature. A
map showing the path from the discharge point to the first "blue-line" stream, as shown
on the Durham County GIS data, can be seen in Attachment G.
Notice of Intent
As part of the Notice of Intent, the feasibility of alternatives to discharging must be
addressed. The following alternatives are to be evaluated:
Connection to a regional or municipal sewer collection system.
Letter from the local or county health department describing the suitability
or non-suitability of the site for all types of wastewater ground adsorption
and innovative non-discharge systems, as well as documenting the repair
potential of the failed system.
- Investigate land application such as spray irrigation or drip irrigation.
Connection to a Regional or Municipal Sewer Collection System
Connection to a sewer collection system is not feasible for this facility. The applicant's
property is located just outside of the Durham city limits. Durham maintains sanitary
sewer mains to the south of the facility, across Patterson Road and along Wake Forest
Highway. To connect the applicant's facility to the existing sewerage system, the
applicant would be required to pay the cost of boring underneath Wake Forest Highway.
Additional costs would include engineering fees, location of utilities, relocation of
utilities, removal and/or replacement of road and sidewalks, etc. Without even
considering the city's consumption fees once connected to sewer, the cost of connecting
the facility to Durham's existing sewerage system is much higher than the cost of a
wastewater discharge system.

Letter from the local or county health department describing the suitability or non-
suitability of the site for all types of wastewater ground adsorption and innovative
non-discharge systems. Document the repair potential of the failed system.
The Durham County Environmental Health Department indicated that the site is
unsuitable for installation of a ground absorption septic system in letter dated July 20,
2018 (Attachment B). The letter indicated that a repair permit cannot be issued due to
unsuitable soil characteristics, insufficient space, and unsuitable topography.
Investigate Land Application such as spray irrigation or drip irrigation.
Per the soil evaluation by Chris McGee of Agri-Waste Technology, Inc. the site does not
have sufficient space or suitable soil characteristics to accommodate a non-discharge
surface spray or drip wastewater system(Attachment E).
7Q10 Flow Estimate
The United States Geological Survey (USGS) was contacted to determine the 7Q10 flow
estimate for the proposed wastewater discharge point. The proposed discharge point is in
a roadside ditch that leads to a tributary to Little Lick Creek. The analysis from USGS
indicates the 7Q10 discharge for the point in question is likely zero (Attachment F).
Engineering Alternatives Analysis
An Engineering Alternatives Analysis (EAA) has been completed for this site and
is included as Attachment H. In my opinion, the completed EAA demonstrates
that a wastewater treatment system permitted under the NCG550000 General
Discharge Permit is the only feasible option for this site. We have exhausted all
other options for this site as follows:
a.) connection to a municipal or regional sewer collection system
- Not feasible due to costs.
b.) subsurface disposal
- No suitable soil for a subsurface absorption system.
c.) single-family residence wastewater irrigation (drip and spray)
- Unsuitable soil and insufficient space for a non-discharge
ground absorption system.
d.) reclaimed-water systems
- No suitable soil for a reclaimed water system. No
reasonable ability to operate as a bulk distributor of
reclaimed water.
e.) Any viable combination of the above
- There are no viable combinations of the above due to soil
and cost limitations.
Local Government Review Forms
As part of the EAA, Local Government Review Forms were sent to Durham County and
the City of Durham. A copy of the submittal is included as Attachment I. To date, the
completed forms have not been received. _

I appreciate your time and efforts in reviewing this application. If you have any
questions or comments,please feel free to contact me at 919-859-0669.
Best Regards,
/ ::::, . •' ------..
Kevin Davidson, P.E.
V.P. of Engineering

Attachment List
Attachment A Notice of Intent(NCG550000)
Attachment B Documentation From Durham County Health Department
Attachment C Letter Requesting Coverage Under the General Permit
Attachment D Letter Requesting Authorization to Construct
Attachment E AWT Soils Evaluation Report
Attachment F 1. Correspondence from USGS
2. Stream Classification
Attachment G Flow Path to "Blue Line"Water Feature
Attachment H Engineering Alternatives Analysis
Attachment I Local Government Review Forms
Attachment J Plans and Specifications for the Proposed System

Attachment A
Notice of Intent(NCG550000)

Division of Water Resources FOR AGENCY USE ONLY
Al
._____�� National Pollutant Discharge Elimination System(NPDES) Date Received
NCDENRApplication for Coverage Under General Permit Year Month Day
00
NCG550000 AOlg Cg,
Certificate of Coverage
Single Family Residences and/or facilities discharging N C G 5 5 r/ p
< 1000 gallons per day of domestic wastewater Check# Amount
.C1 ?) (PO,PD
Assigned To:
NOTICE OF INTENT
[Required by 15A NCAC 02H.0127(d)1; [term definition see 15A NCAC 02H.0103(19)]
(Press TAB to navigate form)
1. Regional Office contact(Please note: This application will be returned if you have not met with a
representative from the appropriate regional office.):
Please list the NCDENR Regional Office representative(s)with whom you have met:
Name(s): Jane Bernard Date: 7/5/2018
2. Mailing address of owner/operator: (address to which all correspondence should be mailed)
Owner Name Hal&Gail Pate
Street Address 4729 Old Weaver Trail
City Creedmoor State NC Zip27522-
Telephone#(H) 919-730-1668 Telephone#(W)
Cell/Mobile# Email [e-mail]
3. Location of facility producing discharge: (Iffacility is not yet constructed,give street address or lot#)
Street Address 106 Stallings Road
City Durham State NC Zip 27703-
County Durham
Telephone# [phone] Cell/Mobile#
4. Physical location information:
Please provide a narrative description of how to get to the facility(use street names,state road numbers,and distance
and direction from a roadway intersection). From I-40W in Raleigh,drive 7.5 mi and take Exit 281 for Miami
Blvd. Turn right onto S Mineral Springs Rd in 4.1 mi. Continue straight onto Sherron Rd in 0.2 mi. Continue
onto Patterson Rd in 3.1 mi. Turn left onto Stallings Rd in 200ft.The destination will be on the right in 200 ft.
5. This NPDES permit application applies to which of the following:
❑ New[term definition see 15A NCAC 02H.0103(16)]or Proposed(system not constructed)
® Existing[term definition see 15A NCAC 0211.0103(11)];If previously permitted by local or county health
department,please provide the permit number
and issue date Click here to enter a date.
El Modification; please describe the nature of the modification:
Page 1 of 4 Revised 9/1/13

NCG550000 New Application
6. Description of Discharge: [Required by 15A NCAC 02H.0105(c)(1)]
a) Amount of wastewater to be discharged:
Number of bedrooms 3 x 120 gallons per bedroom= 360
360 gallons per day to be permitted
b) Type of facility producing waste(please check one):
❑ Primary residence ❑ Vacation/second home
® Other: Retail Facility
7. Please check the components that comprise the wastewater treatment system:
[Required by 15A NCAC 02H.0105(c)(3)]
® Septic tank ® Dosing tank
❑ Primary sand filter ❑ Secondary sand filter ® Recirculating sand filter(s)
❑ Chlorination 0 Dechlorination ® Other form of disinfection: IIV
® Post Aeration(specify type) Riprap at discharge
8. For new or proposed systems only-Please address the feasibility of alternatives to discharging for the
following options in the cover letter for this application:
[Evaluation required by G.S. & 143-215.1(b)(5)(a)and 15A NCAC 02H.0105(c)(2)1
a) Connection to a Regional or Municipal Sewer Collection System.
b) Letter from local or county health department describing the suitability or non-suitability of the site for all types of
wastewater ground adsorption and innovative non-discharge systems. Document the repair potential of the failed
system.
c) Land Application such as spray irrigation or drip irrigation.
9. Receiving waters: [Required by 15A NCAC 02H.0105(c)(1)1
a) What is the name of the body or bodies of water(creek,stream,river,lake,etc.)that the facility wastewater
discharges end up in? Tributary of Little Lick Creek
b) Stream Classification(if known): WS-IV;NSW,CA
10. The application must include the following or it will be returned, as allowed by 15A NCAC 02H.0107(b):
a) For Certificates of Coverage:
® An original letter and two(1)copy requesting coverage under NCG550000.
® A signed and completed original and one copy of this Notice of Intent Application.
® A check or money order for the permit fee of$60.00[per G.S.§ 143-215 3(a)(lb)]made payable to NCDENR.
O Invoice showing that the septic tank has been pumped and serviced within the last 12 months(only when
existing service tank will be used).
Page 2 of 4 Revised 9/1/13

NCG550000 New Application
New or proposed facilities must also include:
® Letter from the county health department evaluating the proposed site for all types of ground absorption and
innovative non-discharge systems.Document the repair potential of the failed system.
® Evaluation of connection to a regional sewer system(approximate distance&cost to connect).
® Provide a 7Q10 flow estimate at the proposed wastewater discharge point from the US Geological Survey(919-
571-4000)
b) For an Authorization to Construct(ATC)only: (Note: There is no fee for an ATC)
® A letter requesting an ATC
® Three sets of plans and specifications (required by 15A NCAC 02H.0138) of proposed treatment system (see
Permit Application Checklist and Design Criteria for Single Family Discharge)
® Invoice showing that the septic tank has been pumped and serviced within the last 12 months (only when
existing septic tank will be used).
Additional Application Requirements:
a) If this application is being submitted by a consulting engineer(or engineering firm),include
documentation from the applicant showing that the engineer(or firm)submitting the application has
been designated an authorized Representative of the applicant,per 15A NCAC 02H.0138(b)(1).
b) If this application is being submitted by a consulting engineer(or engineering firm),final plans for the
treatment system must be signed and sealed by a North Carolina registered Professional Engineer and
stamped- "Final Design-Not released for construction;"per 15A NCAC 02H .0139.
c) If this application is being submitted by a consulting engineer(or engineering firm),fmal specifications
for all major treatment components must be signed and sealed by a North Carolina registered
Professional Engineer and shall include a narrative description of the treatment system to be
constructed;per 15A NCAC 02H.0139.
Page 3 of 4 Revised 9/1/13

NCG550000 New Application
CERTIFICATION
I certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete,and accurate.
Printed Name'a Person Signing: //A(, 1 PATE / "ht K pR TF
Title: OWnER .S
(Please review I5A NCAC 02H.0106(e)for authorized signing officials)I
Click here to enter a
date.
(Signature ofApplicant) (Date Signed)
North Carolina General Statute ti 143-215.613 provides that:
Any person who knowingly makes any false statement representation,or certification in any application,record,report,plan,or other
document filed or required to be maintained under this Article or a rule implementing this Article,or who knowingly makes a false
statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or
knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article
or rules of the Commission implementing this Article,shall be guilty of a Class 2 misdemeanor which may include a fine not to
exceed ten thousand dollars($10,000). 18 U.S.C. Section 1001 provides a punishment by a fine or imprisonment not more than 5
years,or both,fora similar offense.
ri
Application must be accompanied by a check or money order for$60.00 1per G.S. ti 143-215.3(a)(Ib)1
made payable to:
NCDENR
Mail this application and one copy of the entire package(with check) to:
li
II
NC DENR/DWR/Water Quality Permitting Section
1617 Mail Service Center
Raleigh,North Carolina 2769?-161 7
Attn: Charles Weaver.
i l
Note: The submission of this document does not guarantee the issuance of an NPDES permit
fi
1i
. � l
Page 4 of 4 Revised 9/1/13
1 '

Attachment B
Documentation From Durham County Environmental Health Department

•
DURHAM
COUNTY
Public Health
ENVIRONMENTAL HEALTH DIVISION
414 E. Main Street, Durham,NC 27701
Ph 919-560-7800 Fax [phone]
[e-mail]
NOTICE OF VIOLATION
ON-SITE WASTEWATER SYSTEM
July 20, 2018
Owner: Hal Pate Address: 106 Stallings Rd.
106 Stallings Rd. Durham, NC 27703
Durham, NC 27703
Occupant: Owner ►:4 Certified Mail
(return receipt)
First Class Mail
Dear Durham Polaris CIO - Hal Pate,
You are hereby notified that you are violating the Rules adopted by the North Carolina
Commission for Health Services, Article 11 of Chapter 130A of the General Statutes of North
Carolina; or Permit Conditions by owning or controlling a residence, place of business, or place
of public assembly which is not provided with an approved wastewater system. Your
wastewater system is riot in compliance.
An inspection of the wastewater system at above referenced property by the Durham County
Department of Public Health indicated the following violations:
Violation Law or Rule
1. Sewage is backing up into the facility. § 130A-335(a)
2. Sewage is backing up into the facility. 15A NCAC 18A .1961
414 East Main Street Durham,NC 27701Phone.[phone] Fax:[phone]
htrp.'//dconc.gov/

You are hereby ordered to bring your wastewater system into compliance by completing
the following:
X Contact the NC Division of Water Resources and make application for a NPDES permit by
calling 919-791-4200.
Or
X Contact Public Health and make application for Construction Authorization for Permanent
Pump and Haul by calling 919-560-7800.
Or
X You may choose to vacate the residence and properly abandon the plumbing.
If the wastewater violation is not brought into compliance by August 31,2018,
appropriate legal action will be taken.
Failure to comply with the laws, rules, and this notice will subject you to the following
legal remedies; Injunction Relief[G.S. 130A-18], Administrative Penalties [G.S. 130-
22(c)], Suspension or Revocation of Permits [G.S. 130-23], and Criminal Penalties [G.S.
130-25].
You may contact our office at: 414 East Main Street, Durham, NC 27701.
Phone: [phone]
Notice Issued July 20, 2018, Signed 1*---1�S i`"ll ¢r Agent
Justin M. Milstein, LSS, REHSI
Environmental Hearth Specialist Intern
Compliance date Signed Agent
414 East Main Street Durham,NC 27701iPhone:919-560-7800 Fax: [phone]
htip://dconc.goi

DURHAM
COUNTY
Public Health
100 Years of Service* 1913-2013
July 20, 2018
Re: Application for Construction Authorization Permit
Applicant: Hal Pate Owner: Hal Pate
106 Stallings Rd. 106 Stallings Rd.
Durham, NC 27703 Durham, NC 27703
Property site: Durham Polaris— 106 Stallings Rd.
Durham, NC 27703
Environmental Health Division file number: 249152
Dear Hal Pate,
On July 19, 2018 the Durham County Department of Public Health, Environmental Health
Division on evaluated the above referenced property at the site designated on the plat/site
plan that accompanied your Construction Authorization application. According to your
application the site is a single family dwelling with a design wastewater flow of 100 gallons
per day. The evaluation was done in accordance with the laws and rules governing
wastewater systems in North Carolina General Statute 130A-333 including related statutes
and Title 15A, Subchapter 18A, of the North Carolina Administrative Code, Rule .1900 and
related rules.
Based on the criteria set out in Title 15A, Subchapter 18A, of the North Carolina Administrative
Code, Rule .1940 through .1948, the evaluation indicated that the site is UNSUITABLE for a
sanitary system of sewage treatment and disposal. Therefore, we must deny your request for
an Construction Authorization Permit. A copy of the site evaluation is enclosed. The site is
unsuitable based on the following:
T Unsuitable soil topography and/or landscape position (Rule .1940)
1 Unsuitable soil characteristics (structure or clay mineralogy)(Rule .1941)
n Unsuitable soil wetness condition(Rule .1942)
0 Unsuitable soil depth (Rule .1943)
0 Presence of restrictive horizon (Rule .1944)
Insufficient space for septic system and repair area (Rule .1945)
Unsuitable for meeting required setbacks(Rule .1950)
These severe soil or site limitations could cause premature system failure, leading to the
discharge of untreated sewage on the ground surface, into surface waters, directly to ground
water or inside your structure.
The site evaluation included consideration of possible site modifications, as well as use of
modified, innovative, or alternative systems. However, the Health Department has determined
that none of the above options will overcome the severe conditions on this site. A possible
option might be a system designed to dispose of sewage to another area of suitable soil or off-
site to additional property.
For the reasons set out above, the property is currently classified UNSUITABLE, and no
Improvement permit shall be issued for this site in accordance with Rule.1948(c).
Environmental Health Division
Human Services Building 1414 East Main Street,Durham,North Carolina 27701
[phone] I Fax[phone] I dconc.gov/publichealth
Equal Employment/Affirmative Action Employer

Note that a site classified as UNSUITABLE may be classified as PROVISIONALLY SUITABLE if
written documentation is provided that meets the requirements of Rule.1948(d). A copy of this
rule is enclosed. You may hire a consultant to assist you if you wish to try to develop a plan
under which your site could be reclassified as PROVISIONALLY SUITABLE.
You have a right to an informal review of this decision. You may request an informal review by
the soil scientist or environmental health supervisor at the local health department. You may
also request an informal review by the North Carolina Department of Health and Human
Services regional soil scientist. A request for informal review must be made in writing to the
local health department.
You also have a right to a formal appeal of this decision. To pursue a formal appeal, you must
file a petition for a contested case hearing with the Office of Administrative Hearings, 6714 Mail
Service Center, Raleigh, NC 27699-6714. To get a copy of a petition form, you may write the
Office of Administrative Hearings or call the office at [phone] or download it from the
OAH web site at http://www.ncoah.com/forms.html . The petition for a contested case hearing
must be filed in accordance with the provision of North Carolina General Statutes 130A-24 and
1508-23 and all other applicable provisions of Chapter 1508. N.C. General Statute 130A-335
(g)provides that your hearing would be held in the county where your property is located.
Please note: If you wish to pursue a formal appeal, you must file the petition form with the Office
of Administrative Hearings WITHIN 30 DAYS OF THE DATE OF THIS LETTER. The date of
this letter is July 20, 2018. Meeting the 30 day deadline is critical to your formal appeal.
If you file a petition for a contested case hearing with the Office of Administrative Hearings, you
are required by law(N.C. General Statute 150B-23)to serve a copy of your petition on the
Office of General Counsel, N.C. Department of Health and Human Services, 2001 Mail Service
Center, Raleigh, N.C. 27699-2001.
Do not serve the petition on your local health department. Sending a copy of your petition to the
local health department will not satisfy the legal requirement in N.C. General Statute 1508-23
that you send a copy to the Office of General Counsel, N. C. Department of Health and Human
Services.
You may call or write the local health department if you need any additional information or
assistance.
Sincerely,
0- - (A;27.e.1-5- Lc,
Justin M. Milstein, LSS, REHSI
Environmental Health Specialist Intern
On-Site Water Protection
Environmental Health Division
Enclosures:Copy of site evaluation
Copy of Rule .1948

ISA NCAC I8A.1948 SITE CLASSIFICATION
(a)Sites classified as SUITABLE may be utilized for a ground absorption sewage treatment and disposal system
consistent with these Rules.A suitable classification generally indicates soil and site conditions favorable for the
operation of a ground absorption sewage treatment and disposal system or have slight limitations that are readily
overcome by proper design and installation.
(b)Sites classified as PROVISIONALLY SUITABLE may be utilized for a ground absorption sewage treatment and
disposal system consistent with these Rules but have moderate limitations. Sites classified Provisionally Suitable
require some modifications and careful planning,design,and installation in order for a ground absorption sewage
treatment and disposal system to function satisfactorily.
(c)Sites classified UNSUITABLE have severe limitations for the installation and use of a properly functioning ground
absorption sewage treatment and disposal system.An improvement permit shall not be issued for a site which is
classified as UNSUITABLE.However,where a site is UNSUITABLE,it may be reclassified PROVISIONALLY
SUITABLE if a special investigation indicates that a modified or alternative system can be installed in accordance with
Rules.1956 or.1957 of this Section.
(d)A site classified as UNSUITABLE may be used for a ground absorption sewage treatment and disposal system
specifically identified in Rules.1955,.1956,or.1957 of this Section or a system approved under Rule.1969 if written
documentation,including engineering,hydrogeologic,geologic or soil studies,indicates to the local health department
that the proposed system can be expected to function satisfactorily. Such sites shall be reclassified as
PROVISIONALLY SUITABLE if the local health department determines that the substantiating data indicate that:
(1)a ground absorption system can be installed so that the effluent will be non-pathogenic,non-infectious,
non-toxic,and non-hazardous;
(2)the effluent will not contaminate groundwater or surface water;and
(3)the effluent will not be exposed on the ground surface or be discharged to surface waters where it could
come in contact with people,animals,or vectors.
The State shall review the substantiating data if requested by the local health department.
History Note:Authority G.S I30A-335(e);
Eff.July 1, 1982;
Amended Ey":April 1, 1993, January 1, 1990.

DEPARTMENT OF HEALTH AND HUMAN SERVICES,i Sheet_1_01 i
PROPERTY ID h: 16 6 34
DIVISION OF PUBLIC HEALTH,ENVIRONMENTAL HEATH SECTION �,: I,6r44
ON-S1TE WATER PROTECTION BRANCH SOIL/SITE EVALUATION •
for ON-SITE WASTEWATER SYSTEM
(Complete all fields in fan)
OWNER: Ha 1 Pad. C/ttom.Prv, R(fR.,ti$ APPLICATION DATE
ADDRESS: 16175•}wtlzm15 �. kfvurty too 277°1 TDATE EVALUATED: IAll'
PROPOSED FACILITY: RuSI r t55 PROPOSED DESIGN FLOW(.1949): I QO 61"D PROPERTY SIZE: 3.b 4 ,
LOCATION OF SITE: }0(, 5 +1 i Mt5 S Ltd I .brG.,-.*t 0 C. '1770 PROPERTY RECORDED:
WATER SUPPLY: OPrivate 0 Public 4 Well 0 Spring 0 Other
3VALUATION METHOD: gAuger Boring ❑Pit ❑Cut TYPE OF WASTEWATER: N Sewage ❑Industrial Process ❑Mixed
p • •
R SOIL MORPHOLOGY OMR
°F . (1941) PROHLE FACTORS
r .1940
E LANDSCAPE HORIZON PROFILEPOSITION! DEPTH 1942 FFG
s SLOPE% ) .1941 1941 SOIL, 1943 .1956 1944
STRUCTURE/ CONSISTENCE/ WETNESS/ SOIL SAPRO RESTAA &LTAR
TEXTURE MINERALOGY COLOR DEPTH CLASS HOW
0 -' Z Ge. 51.. pie 55 ,s9 Sc'r
i2 M G uf✓�, �s,�p t UOS
55 ,
I
•
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DESCRIPTION INITIAL SYSTEM REPAIR SYSTEM OTHER FACTORS(.1946): �h5�i}L6
SITE CLASSIFICATION(.1948):
.vafable Space(.1945) P
EVALUATED BY: 3-, M;i -e. "t 1 11
Ystem Type(s)-- -- . OTHER(S)=PRESENT:
rte LTAR
MMENTS:
fated February 2014

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Attachment C
Letter Requesting Coverage Under the General Permit

Engineers and Soil Scientists
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex, North Carolina 27502
919-859-0669
www.agriwaste.com August 10, 2018
Mr. Charles Weaver
NPDES Permitting Program
Division of Water Quality
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
RE: Letter Requesting Coverage under the General Permit—Durham Polaris.
106 Stallings Road, Durham,NC 27703
Dear Mr. Weaver;
Please consider this letter as a request for coverage under the General Permit for a Multi-
Phase Filter System. The proposed discharge system is for an existing retail facility
(Durham Polaris) located in Durham County, North Carolina. The proposed discharge
system will replace the failed sub-surface system that served the facility. The site has
been deemed unsuitable for ground absorption sewage treatment systems by the Durham
County Environmental Health Department due to inadequate soil conditions and
unsuitable topography. The proposed system is to be sized for 360 gallons/day. The
residence is located at 106 Stallings Road, Durham,NC 27703.
Thank you for your assistance in this matter.
Sincerely;
Kevin D. Davidson, P.E.
V.P. of Engineering

Attachment D
Letter Requesting Authorization to Construct

Engineers and Soil Scientists
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex, North Carolina 27502
919-859-0669
www.agriwaste.com August 10, 2018
Mr. Charles Weaver
NPDES Permitting Program
Division of Water Quality
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
RE: Letter Requesting Authorization to Construct—Durham Polaris.
106 Stallings Road, Durham,NC 27703
Dear Mr. Weaver;
Please consider this letter as a request for an Authorization to Construct a Multi-Phase
Filter System. The proposed discharge system is for an existing retail facility (Durham
Polaris) located in Durham County,North Carolina. The proposed discharge system will
replace the failed sub-surface system that served the facility. The site has been deemed
unsuitable for ground absorption sewage treatment systems by the Durham County
Environmental Health Department due to inadequate soil conditions and unsuitable
topography. The proposed system is to be sized for 360 gallons/day. The residence is
located at 106 Stallings Road, Durham,NC 27703.
Thank you for your assistance in this matter.
Sincerely;
/Z ...---.--. •' """----
Kevin D. Davidson, P.E.
V.P. of Engineering

Attachment E
AWT Soil Evaluation Report

rI I SOIL se
Engineers and Soil Scientists v �QH � . 4. ��
Agri-Waste Technology, Inc. ,
501 N. Salem Street, Suite 203 t ;
Apex, North Carolina 27502 • .•,
919-859-0669
www.agriwaste.com %q1324ppF
August 7, 2018
Evaluation Summary
TO: Mr. Hal Pate
FROM: Chris McGee, LSS
SUBJECT: Site Evaluation for 106 Stallings Road,
Durham,NC (Durham County)
Agri-Waste Technology, Inc. (AWT) was contracted to perform a site/soils evaluation for the
purposes of on-site wastewater system suitability at the subject property in Durham, NC. The
evaluation was performed by Chris McGee of AWT on August 6, 2018. A retail facility
(Durham Polaris) with a failing subsurface wastewater system is located at 106 Stallings Road.
The current wastewater system has been deemed irreparable by the Durham County
Environmental Health Department.
The soils on the subject property are unsuitable for on-site wastewater systems due to
unsuitable topography/landscape position, inadequate space, disturbance, and wetness
conditions. Therefore, the property does not comply with the requirements of 15A NCAC 18A
Section .1900 — Sewage Treatment and Disposal Systems -or- 15A NCAC 02T Section .0600 —
SFR Wastewater Irrigation Systems. The site is a likely candidate for a surface water discharge
system.
Please contact us with any questions, concerns, or comments.

Attachment F
1. Correspondence from USGS
2. Stream Classification

Agriwaste Technology,Inc.Mail-Fwd:USGS response concerning...Re:... https://mail.google.com/mail/u/0/?ui=2&ik=bfada34193&view pt&gjul...
Scott Jones <[e-mail]>
tart oo31e
Fwd: USGS response concerning...Re: 7Q10 Flow Request-Reiss
1 message
Julie Peele <[e-mail]> Fri, Jun 14, 2013 at 11:47 AM
To: "Kevin D. Davidson"<[e-mail]>, [e-mail]
Original Message
Subject:USGS response concerning...Re: 7Q10 Flow Request-Reiss
Date:Fri, 14 Jun 2013 11:42:20-0400
From:Weaver, John <[e-mail]>
To:Julie Peele <[e-mail]>
CC:John Weaver<[e-mail]>
•
Ms. Peele,
In response to your inquiry about the 7Q10 low-flow discharge for an unnamed tributary to Little Lick Creek in
southeast Durham County, the following information is provided:
A check of the low-flow files here at the USGS North Carolina Water Science Center does not indicate a previous
low-flow determination for your point of interest. No USGS discharge records are likewise known to exist for your
point of interest.
In the absence of site-specific discharge records sufficient for a low-flow analysis, estimates of low-flow
characteristics at ungaged locations are determined by assessing a range in the low-flow yields (expressed as flow
per square mile drainage area, of cfsm)at nearby sites where estimates have been determined.
The most recent low-flow information published for streams in southeast Durham County is in a basinwide low-flow
report completed in 1998. It is USGS Water-Resources Investigations Report 98-4135, "Low-flow characteristics
and discharge profiles for selected streams in the Neuse River basin, North Carolina" (Weaver, 1998). An online
version of the report is available through http://pubs.er.usgs.gov/publication/wri984135. The report provides the
low-flow characteristics(based on data through 1996)for continuous-record gaging stations and partial-record sites
within the Neuse River basin. The report also provides low-flow discharge profiles (7Q10, 30Q2, winter 7Q10, and
7Q2)for the Neuse River and selected tributaries within the basin.
A drainage-area delineation completed using the USGS StreamStats application for North Carolina
(http://water.usgs.gov/osw/streamstats/north_carolina.html) indicates the drainage area is 0.13 sqmi.
There are seven nearby USGS continuous-record and partial-record sites in vicinity of the unnamed tributary for
which 7Q10 low-flow discharges were published in the above-referenced report. The 7Q10 low-flow yields for all
these seven sites are zero cfsm.
Please be aware that the area upstream and adjacent to your point of interest is underlain by the Triassic basin
geologic unit. From a hydrologic perspective, streams underlain by this geologic unit have very little to no potentials
for sustained base flows during extended-dry periods._At sites underlain_bythe Triassic basin where-the USGS has—
collected
----_-
sufficient records for low-flow analyses, the low-flow characteristics for sites having drainage areas that
would typically be expected to have sustained flows actually have some of the lowest low-flow estimates in the
state.
1 of 2 6/26/2013 10:17 AM

Agriwaste Technology,Inc.Mail-Fwd:USGS response concerning...Re:... https://mail.google.com/ma.il/u/0/?ui=2&ilc—bfada34193&view=pt&q jul...
Consideration of the above information results in a conclusion that the 7Q10 discharge for your point of interest is
zero flow.
Please understand the information provided in this message is based on a preliminary assessment and considered
provisional, subject to revision pending further data collection and/or analyses.
Hope this information is helpful.
Thank you.
Curtis Weaver
*************************************************************
J. Curtis Weaver, Hydrologist, PE
USGS North Carolina Water Science Center
3916 Sunset Ridge Road
Raleigh, NC 27607
Phone: [phone] // Fax: [phone]
E-mail [e-mail]
Internet address-- http://nc.water.usgs.gov/
*************************************************************
On Fri, Jun 7, 2013 at 2:37 PM, Julie Peele <[e-mail]>wrote:
Mr. Weaver,
Will you provide the 7Q10 flow for the location I have identified on the map (attached)?
Thank you for your time.
Julie
Julie Peele Davidson
Agri-Waste Technology, Inc.
5400 Etta Burke Ct. Suite 200
Raleigh NC 27606
0: 919.859.0669 x 2304
C: 919.971.2326
F: 919.233.1970
www.agriwaste.com
WE ARE ON FACEBOOK
2 of 2 6/26/2013 10:17 AM

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North Carolina Waterbodies Listed by County Records Found: 79
Note:Waterbodies are listed in more than one county if they cross county lines. Search Parameters:
County: Durham
Class:
SpDes.
Name•
Index#. %
Name of Stream Description Curr. Class Date Basin Stream Index#
Dh Cut '77777:71/4:77 ,71o
New Hope Creek From source to a point WS-V;NSW 08/11/09 Cape Fear 16-41-1-(0.5)
0.3 mile upstream of
Durham County SR 2220
New Hope Creek From a point 0.3 mile WS-IV;NSW 08/03/92 Cape Fear 16-41-1-(11.5)
upstream of Durham
County SR 2220 to a
point 0.8 mile
downstream of Durham
County SR 1107
New Hope Creek From a point 0.8 mile WS-IV;NSW,CA 08/03/92 Cape Fear 16-41-1-(14)
(including New downstream of Durham
Hope Creek Arm County SR 1107 to
of New Hope confluence with Morgan
River Arm of B. Creek Arm of New Hope
Everett Jordan River Arm of B.
Lake) Everett Jordan Lake
Mud Creek From source to New WS-V;NSW 08/11/09 Cape Fear 16-41-1-10
Hope Creek
Sandy Creek From source to New WS-V;NSW 08/11/09 Cape Fear 16-41-1-11
Hope Creek
Third Fork Creek From source to a point WS-V;NSW 08/11/09 Cape Fear 16-41-1-12-(1)
2.0 miles upstream of
N.C. Hwy. 54
Third Fork Creek From a point 2.0 miles WS-IV;NSW 08/03/92 Cape Fear 16-41-1-12-(2)
upstream of N.C. Hwy.
54 to New Hope Creek
Gum Creek From source to New WS-IV;NSW 08/03/92 Cape Fear 16-41-1-13
Hope Creek
Little Creek From source to a point WS-IV;NSW 08/03/92 Cape Fear 16-41-1-15-(0.5)
0.7 mile downstream of
Durham County SR 1110
Little Creek From a point 0.7 mile WS-IV;NSW,CA 08/03/92 Cape Fear 16-41-1-15-(3)
downstream of Durham
County SR 1110 to New
Hope Creek
Crooked Creek From source to a point WS-V;NSW 08/03/92 Cape Fear 16-41-1-16-(1)
0.7 mile upstream of
mouth
Northeast Creek From source to N.C. WS-V;NSW 08/11/09 Cape Fear 16-41-1-17-(0.3)
Hwy. 55
Page 1 of 6 2010-08-21 07:04:26

Name of Stream Description Curr. Class Date Basin Stream Index#
Rocky Creek From source to Durham WS-III;NSW 08/03/92 Neuse 27-3-7.5-(1)
County SR 1616
Rocky Creek From Durham County SR WS-III;NSW,CA 08/03/92 Neuse 27-3-7.5-(2)
1616 to Lake Michie,
Flat River
Brier Creek From source to C;NSW 05/01/88 Neuse 27-33-4
Crabtree Lake,
Crabtree Cr.
Little Brier From source to Brier C;NSW 05/01/88 Neuse 27-33-4-1
Creek Creek
Stirrup Iron From source to Brier C;NSW 05/01/88 Neuse 27-33-4-2
Creek Creek
Sycamore Creek From source to B;NSW 05/01/88 Neuse 27-33-9
(Big Lake) Crabtree Creek
Camp Creek From source to a point WS-II;HQW,NSW 08/03/92 Neuse 27-4-3-(1)
0.3 mile upstream of
mouth
Ellerbe Creek From source to a point C;NSW 08/01/98 Neuse 27-5-(0.3)
0.3 mile below the
I-85 Bridge
Ellerbe Creek From a point 0.3 mile WS-IV;NSW 08/01/98 Neuse 27-5-(0.7)
below the I-85 Bridge
to a point 0.2 mile
upstream of Durham
County SR 1636
Ellerbe Creek From a point 0.2 mile WS-IV;NSW,CA 08/01/98 Neuse 27-5-(2)
upstream of Durham
County SR 1636 to
Falls Lake, Neuse River
Goose Creek From source to Ellerbe WS-IV;NSW 08/03/92 Neuse 27-5-1
Creek
Panther Creek From source to a point WS-IV;NSW 08/01/98 Neuse 27-6-(1)
1.1 mile downstream of
Durham County SR 1818
Panther Creek From a point 1.1 mile WS-IV;NSW,CA 08/01/98 Neuse 27-6-(2)
downstream of Durham
County SR 1818 to
Falls Lake, Neuse River
Rocky Branch From source to a point WS-IV;NSW 08/01/98 Neuse 27-7-(1)
0.5 mile upstream of
Durham County SR 1802
Rocky Branch From a point 0.5 mile WS-IV;NSW,CA 08/01/98 Neuse 27-7-(2)
upstream of Durham
County SR 1802 to
Falls Lake, Neuse River
Little Lick Creek From source to a point WS-IV;NSW 08/01/98 Neuse 27-9-(0.5)
0.4 mile upstream of
Durham County SR 1811
Little Lick 'Froin a point-0:4 mile WS-IV;NSW;CA 08/01/98 Neuse 27=9-(2)!
Creek d(ihcludinq upstream of Durham SR
poittioT of 1811 to Falls Lake,_
Little Lick , Neuse Rivet
;Creek Arm ofj
Falls_Lake) _
Page 5 of 6 2010-08-21 07:04:26

Attachment G
1. Flow Path to "Blue Line"Water Feature

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Flow Path
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NG CC,©OpenStreet Map contributors,and the GIS User Community
2018

Attachment H
Engineering Alternatives Analysis

Engineers and Soil Scientists
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex, North Carolina 27502
919-859-0669
www.agriwaste.com
Engineering Alternatives Analysis
Durham Polaris
106 Stallings Road
Durham, NC 27703
Durham County
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0,0000,34437:11.
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Ativ tritbor CO 4'
4.,0100 E
Date: August 10, 2018
Design Engineer: Kevin D. Davidson,P.E.
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex,NC 27502
Office: 919-859-0669
Direct: 919-747-2306

Engineering Alternatives Analysis (EAA) Guidance Document
North Carolina Division of Water Resources
STEP 1. Determine if the proposed discharge will be allowed
Non-municipal applicants.
Due to staff constraints, the NPDES Unit cannot prepare speculative limits for non-municipal applicants.
Thus, it is your responsibility to make your own determination as to whether the proposed discharge might
be allowed by the Division, by evaluating the water quality factors listed above. It is highly recommended
that you discuss the proposed discharge with the applicable DWR Regional Office and/or NPDES Unit staff,
who may be able to provide input on the likelihood of a new/expanding discharge. As a first step,you must
obtain streamflow estimates for the proposed discharge location to ensure that the receiving stream is not
subject to zero flow restrictions. Low flow data (specifically, drainage area, the summer and winter 7Q10,
average flow and 30Q2 flow statistics) can be obtained for a nominal fee from the U.S. Geological Survey in
Raleigh at 919-571-4000. The low flow data must be submitted with the EAA, and will be used by the permit
writer to develop permit limits. You must also verify that the proposed action (i.e., construction of a
wastewater treatment plant and its appurtenances) is consistent with local zoning and/or subdivision
ordinances. You will need to request the local government(s) to complete a Local Government Review Form
(Attachment A),and include the signed and notarized form with your NPDES application package.
Response: The United States Geological Survey (USGS) was contacted to determine the 7Q10 flow estimate for the
downstream tributary of the proposed wastewater discharge point. The proposed discharge point is in a roadside
ditch along the southeastern property line that leads to a drainage easement running north through the
applicant's property. Discharge flows within the drainage easement and leads to an un-named tributary to Little
Lick Creek. The analysis from USGS indicates the 7Q10 discharge for the point in question is likely zero
(Attachment F of application package). Because this is an existing treatment system with zero flow, the
discharge will be considered on a case-by-case basis.
All applicants.
If you conclude that the proposed discharge will pass the "allowable discharge" criteria, then begin the EAA
preparation by summarizing the following general information about the proposed project:
• Provide a description of the proposed project. If the project will be constructed in phases, provide a
schedule for constructing each additional phase, and provide the projected flow per phase (see STEP
2).
Response: A wastewater discharge system is to be constructed for an existing retail facility(Durham Polaris) in Durham
County,North Carolina. The proposed system will replace a failed sub-surface system that previously served the
facility. The proposed discharge point is in a roadside located off the southeastern property line,which leads to
a drainage easement running north through the applicant's property. This flow leads to an un-named tributary
to Little Lick Creek. The proposed treatment system will utilize the following components:
- New Septic Tank with Effluent Filter
- AdvanTex AX-20 RT Pod
Recirculation Pump Chamber(Integrated into AdvanTex Pod System)
- UV Disinfection
Discharge Point with Rip-Rap
Construction of the proposed system will occur in a single phase with an anticipated completion time of
approximately 2 weeks after the start of construction activity.
EAA Guidance Document Revision:April 2014
Page 1 of 8

Applicant Information:
Name: Hal Pate
Mailing Address: 4729 Old Weaver Trail
Creedmoor,NC 27522
Phone Number: 919-730-1668
Contact Person: Hal Pate
Facility Information:
Name: Durham Polaris
Address: 106 Stallings Road
Durham,NC 27703
County: Durham
Phone Number: 919-730-1668
Contact Person: Hal Pate
EAA Preparer's Information:
Name: Kevin Davidson,P.E.
Mailing Address: Agri-Waste Technology,Inc.
501 N. Salem Street
Apex,NC 27502
Phone Number: 919-859-0669
Contact Person: Kevin Davidson,P.E.
STEP 2. Provide reasonable projections for population and flow
Residential Population Projections.
Facilities requesting an NPDES discharge permit for new or expanding domestic wastewater discharges
must document the population to be served within the service area over a 20-year planning period. The NC
State Demographics unit provides population data for each county and municipality and can be accessed
on the Internet at http://www.demog.state.nc.us. If 20-year population projections for specific areas are
not available, a linear extrapolation of population trends from the past decade should be used. Any
deviation from a linear projection method must be clearly justified. If population projections include future
annexations, include a proposed annexation schedule as well as any annexation requirements that must be
met.
Response: The wastewater treatment system was originally sized and permitted for a 3-bedroom single-family residence at
a flow of 360 gallons per day. The facility has since been converted to a commercial building containing 4
employees at a permitted flow of 100 gallons per day, with no modifications made to the original wastewater
treatment system. For the 20-year planning period, the proposed system will be designed for 4 employees with
the original flow of 360 gallons per day.
EAA Guidance Document Revision:April 2014
Page 2 of 8

STEP 3. Evaluate technologically feasible alternatives
Alternative A. Connection to an Existing Wastewater Treatment System.
You must evaluate the feasibility of connecting to an existing wastewater treatment system served by a
municipality or other entity holding a valid NPDES or Non-Discharge Permit. All connection options
should include an evaluation of a gravity line and/or force main with pump station(s).
1. Existing Sewerage System:
(a) Identify whether there are existing sewer lines within a five-mile radius, or consider a
greater radius if cost effective for the project size.
Response: Connection to a sewer collection system is not feasible for this facility. The applicant's property is located just
outside of the Durham city limits. The City of Durham maintains sanitary sewer mains to the southeast of the
facility, across Wake Forest Highway. To connect the applicant's facility to the existing sewerage system, the
applicant would be required to pay the cost of boring underneath Wake Forest Highway and potentially
underneath Patterson Road. Additional costs would include engineering fees, location of utilities, relocation of
utilities, removal and/or replacement of road and sidewalks, etc. A manhole is located across Stallings Road to
the northwest of the applicant's property,but the City of Durham's Public Works Department has indicated that
this forcemain cannot be tapped. The total cost of connecting the facility to Durham's existing sewerage system
is far higher than the cost of installing a discharge system.
(b) Provide a preliminary indication of flow acceptance from existing municipal or private
WWTPs under consideration for connection. If a municipal or private WWTP cannot accept
the wastewater, include a letter documenting such and consider this alternative
technologically infeasible.
Response: The City of Durham's sewerage system is available along Wake Forest Highway, but connection to the
collection system is not feasible due to cost.
(c) If an existing sewerage system will accept the wastewater, evaluate the
piping/pumps/resources necessary to connect to the existing wastewater treatment plant.
Attach a topographic map or a site drawing showing the physical route of this alternative.
Conduct a Present Value Cost Analysis per STEP 4.
Response: As stated above,the cost to bore underneath Wake Forest Highway or Patterson Road and connect to the city of
Durham's sewerage system renders this alternative infeasible.
2. Planned Sewerage System: Determine if a regional sewerage system within a five mile radius is
projected to be available within the next five years to receive waste from the project site. If
applicable, determine availability date and flow acceptance projection from appropriate
authority.
Response: A regional sewerage system is available within 300' of the applicant's property, located along Wake Forest
Highway. Given that the City of Durham will not extend their coverage area outside of city limits, it is
expected that the facility will not receive sewer service within the next five years.
Alternative B. Land Application.
Land application disposal alternatives include individual/community onsite subsurface systems, drip
irrigation,and spray irrigation.
1. Provide an estimate of the best case hydraulic loading rate based on County Soil Surveys or from
a soil evaluation performed by a soil scientist. Include calculations showing the hydraulic
loading rate and the total area of land needed for the land disposal system,including buffers.
Response: The Durham County Environmental Health Department indicated that the site is unsuitable for installation of a
ground absorption septic system in a letter dated July 20, 2018 (Attachment B of application package). The
EAA Guidance Document Revision:April 2014
Page 3 of 8

letter indicated that a repair permit cannot be issued due to unsuitable soil characteristics, unsuitable soil
topography,and insufficient space.
Per the soil evaluation by Chris McGee of Agri-Waste Technology,Inc.the site does not have adequate space or
suitable soil to accommodate a ground absorption or surface drip or surface spray wastewater system
(Attachment E of application package). The same results were found for the adjacent northwestern property
(Parcel ID: 166346),also owned by the applicant.
Regardless of the fact that a subsurface ground absorption can not be designed or permitted for this site, the
potential size of a subsurface system has been estimated. According to the county soil survey, the site is
classified as a White Store series soil. For a subsurface system in this soil, a drip system with pretreatment
would be required. These soils would have a long-term acceptance rate (LTAR) ranging from 0.05-0.2
gpd/sq.ft.,with a typical rate of 0.1 gpd/sq.ft. Subsurface systems also require the drainline to be installed with
the contour so that each drainline is at a constant elevation. This results in a"fanning" of the drainline and
requires additional space in order to install the required amount of drainline. The sizing calculation is
summarized in the table below:
Subsurface Dripfeld Design Alternative
Daily Flow u N al
609Pd .
6 LIAR 0.1 9pd/sgft
_ tc
Minimum Area Required (Nominal) 3,600 sgft =DailyFlow/LIAR i
Estimation for Topograpal_Variation _ 1,200 sgft
Estimated Area Required (Actual) 4,800 sqft
4
Approximate Area Available 50,928 sqft i
The current property's land available for the system is 50,928 sqft, due to setbacks and existing site
conditions. This area also considers maintaining a 50' well setback. A schematic of this area is shown in
Appendix A of the EAA. The land needed for a subsurface dripfield design is a minimum of 4,800 sq.ft., so
there may be sufficient space for this type of system at the facility. While there may be sufficient space for
this type of system,much of this area contains unsuitable soil and topography characteristics.
The potential size of a non-discharge surface application system has also been estimated. According to the
county soil survey, the site is classified as a White Store soil. For a surface system in this soil, the SFR
loading rate group is likely restricted to a maximum annual loading of 19.5 in/year. The sizing calculation
for a non-discharge surface system is summarized in the table below:
Non-Discharge Surface Design Alternative M' _
Daily Flow .-.._ __ 360 gpd ---1
_u.
ISurface Loading Rate 19.5 in/yeari _�
Minimum Area Required (Nominal) _ 10,810isgft _
Approximate Area Available _s 26,661gft i . — I
The current property's land available for a surface drip or spray system is 26,661 sqft, due to setbacks and
existing site conditions. A schematic of this area is shown in Appendix A. The land needed for a non-
discharge application system is estimated at 10,810 sq. ft., so there may be sufficient space at this facility.
The potential waving of property setbacks along adjacent parcels also owned by the applicant was taken into
account when considering the available application area for both surface systems. The area available for
these types of systems will be further limited by the sites unsuitable soil and topography.
EAA Guidance Document Revision:April 2014
Page 4 of 8

2. Assess the availability of land. If insufficient land is available onsite, assume that the necessary
land can be purchased and estimate the land purchase cost based on local real estate prices.
Alternatively,provide documentation to demonstrate that insufficient land is available for sale in
the project area (include letters from adjacent property owners indicating no interest in selling
property).
Response: Because insufficient land is available onsite (due to unsuitable soil characteristics), offsite land was
reviewed. The table below lists neighboring properties and the value of the land as listed by the Durham
County GIS website. The values listed in the table do not reflect the value of the single-family residences
or businesses. As shown,only two of the listed lots are vacant. One of these lots is currently owned by the
applicant and was investigated in AWT's soil evaluation. The soil types listed for these properties are
listed as White Store. These sites will be very restrictive for wastewater systems.
i�.�.— Adjoining Property Values � �..�,m.m«TyF
i
'Neighboring Property PIN# Area (ac) Vacant Price of Land ($)
0861-03-00-8945 (West across Stallings Rd) i 1.78 _ Y 55,627
0861-03-10-1621 (West across Stallings Rd) 0.90 N ) 490,594 -1
861-03-1000745 (West across Stallings Rd) 0.52 w N 1� 91,127 l
0861-03-11-0183_(Northwest) T N 0.78 y Y 1 39,000m I
10861-03-11-0480 (North) Q 0.55 I _N ' 31,020
0861-03-11-4370 (Northeast)_ 4:84- _ N _ 78,390 _ _
0861-03-10-6864 (East across Patterson Road) 0.56 1 N j 31,140
0861-03-10-6724 (East across Patterson Road) 0.55 N 30,940_
E,
0861-03-10-0745 (East across Patterson Road) 0.52 N ; 923,273
3. Provide a description of the wastewater treatment system and the non-discharge application
system. Include a site plan showing the proposed layout, the application area, any existing
structures,proposed structures,and other uses within the site.
Response: A typical subsurface drip system or a non-discharge surface spray or surface drip system with pretreatment
considers the following components:
-Septic Tank with Effluent Filter
-Recirculation Tank(Integrated in AX20-RT unit)
-AdvanTex Treatment Pod(AX20-RT unit)
-Pump Tank(potentially integrated in AX20-RT unit)
-UV Disinfection(Integrated in AX20-RT unit)
-Headworks Box
-Control Panel
-Disposal Field(drip or spray)
Note: The proposed discharge system does not consider the pump tank,headworks box or disposal field. Site
drawings of these alternative systems showing the available application area are included as Appendix A of
the EAA.
4. Explain the proposed reuse plan if reclaimed water will be used by a third party.
Response: There is no reuse plan being considered either on-site or by a third party. The existing commercial
plumbing infrastructure does not allow for reuse in the existing facility. Due to the small amount of
potentially generated reclaimed water,in my opinion it is not feasible to consider using reclaimed water on
the site or becoming a bulk distributor of reclaimed water. The table below summarizes the amount of
reclaimed water that could be beneficially used on site. As shown,there would be sufficient area to utilize
EAA Guidance Document Revision:April 2014
Page 5 of 8

the daily flow of reclaimed water. The overall cost of installing a reclaim water system (see STEP 4)
makes this alternative infeasible.
On-site Utilization of Reclaimed Water
Daily flow through system�x - - �1.. .. -_µ 360gpd _
Available Area to Irrigate 77,309#sgft 71
"veg.cover on property
Application Rate 0.5 in/week 1;Fescue Grass u�
Acceptable Volume to Irrigate _ 3221�ft3/week 4-
34421 d
__ _ � gP
-.-,_..,-..._,a .
1
5. Conduct a Present Value Cost Analysis per STEP 4. For the reclaimed water system include the
potential revenue generated by selling the water.
Response: A Present Value Cost Analysis is included as Appendix B of the EAA. An analysis was performed for a
sub-surface drip system, a non-discharge surface application system, and a reclaimed water system. A
summary of the analysis is included in STEP 4.
6. Provide all calculations, documentation and maps as necessary to support assumptions and
conclusions.
Response: Calculations performed to evaluate land application alternatives are shown above in Alternative B,Points 1
and 4.
7. Note:The design of land application systems must meet the treatment and design requirements
specified in 15A NCAC 2T .0500 or 15A NCAC 18A.1900.
Response: The treatment systems specified above in Step B would meet the treatment standards required by these
rules. However,because of the lack of available space with suitable soil and other restrictions listed above,
no land-based systems can be considered.
8. Note: Proposed discharges from groundwater remediation systems must evaluate the potential
for an infiltration gallery treatment alternative.
Response: N/A
Alternative C. Wastewater Reuse.
You must evaluate reusing all or a portion of the wastewater generated. Some municipalities are currently
reusing wastewater within the confines of their WWTP property for irrigation,toilet flushing,backwashing,
etc., while other municipalities have established progressive reuse programs for residential irrigation.
Reuse applications might include golf course irrigation, crop irrigation (e.g., hardwood or pine plantation,
grasses), athletic field irrigation, landscape uses, and commercial/industrial uses. Some of these reuse
applications will be evaluated under Alternative B, Land Application. The design of reclaimed water
systems must meet the treatment and design requirements specified in 15A NCAC 2U.
Response: All reuse applications for this project scale were evaluated under Alternative B,Point 4. Wastewater reuse
was determined to be infeasible for this project.
Alternative D. Direct Discharge to Surface Waters.
- -17—No=new=or=expanding=(additional)--discharge=of=oxygen=consuming-waste-will-be--allowed to
surface waters of North Carolina if both the summer 7Q10 and 30Q2 streamflows are estimated
to be zero, in accordance with 15A NCAC 2B.0206(d). Private applicants must contact the
USGS in Raleigh at 919-571-4000 and obtain (generally for a nominal fee), the receiving
EAA Guidance Document Revision:April 2014
Page 6 of 8

streamflow data (s7Q10, 30Q2, annual average streamfiow) at the proposed discharge location.
This information must be included in the EAA, and will be used to develop permit limits.
Response: Because this is an existing treatment facility with estimated zero flow at the discharge point and no
expansion in discharge proposed,the discharge will be considered on a case-by-case basis.
2. All direct discharge systems of oxygen-consuming wastes should be evaluated both with tertiary
filtration [BODS= 5 mg/1, NH3-N= 1 mg/1] and without, and assuming a weekly sampling
regime.
Response: Tertiary filtration is not required under the general permit, as the general permit requirements (monthly
average) are BOD5 = 30 mg/I and Total Suspended Solids = 30 mg/1. However, based on actual sample
results from similar treatment systems (other facilities using the same technology) in many cases, a BOD5
of 5 mg/1 and NH3-N of 1 mg/1 can be met. While weekly sampling of the treated effluent would confirm
the treatment results on a regular basis,the additional cost associated with the collection and testing of the
effluent would not be feasible for the homeowner.
3. Provide a description of the proposed wastewater treatment facilities, including a schematic
diagram of the major components and a site plan of the treatment facility with outfall line(s).
Response: Plans and schematic drawings can be found in Attachment J(of application package).
4. Provide documentation of the availability of required land and/or easement agreements.
Response: The proposed system will be located on land owned by the applicant. See Attachment J (of application
package)for the property and system component layout.
5. Conduct a Present Value Cost Analysis per STEP 4.
Response: A Present Value Cost Analysis for the discharge system is included in Appendix B. A summary of the
analysis is included in STEP 4.
6. Note: All direct discharge treatment systems must comply with Reliability Requirements
specified in 15A NCAC 2H.0124.
Response: The system serves a private facility that is served by a well and does not have elevated water storage tanks.
In the event of a power outage, water will not be available to the facility. There is storage available in the
system to hold some waste from the facility until power is restored to the system. If excessive amounts of
wastewater are generated,the wastewater will back up in the facility.
Alternative E. Combination of Alternatives.
You should evaluate the possibility of a combination of wastewater alternatives that would minimize or
eliminate a direct discharge alternative. For example, consider whether the facility can operate a land
application system during the dry season when streamflows are at their lowest and provide less dilution,
and operate an NPDES discharge system during the wet season when soils may not be as amenable to land
application and the receiving stream provides its greatest dilution.
Response: A non-discharge alternative is not feasible due to the space and soil constraints listed in Alternative B. The
presence or absence of a seasonal high water table will not relieve the other constraints.
EAA Guidance Document Revision:April 2014
Page 7 of 8

STEP 4. Evaluate economic feasibility of alternatives
PVCA Summary Table.
The EAA must include a Summary Cost Table, which summarizes present worth costs developed for all
technologically feasible wastewater alternatives. The summary should include a breakdown of capital costs
and recurring costs. In some situations, the Division may require the applicant to refine cost estimates for
some alternatives, or possibly collect actual soil data to better characterize the land application alternative.
Ultimately, the final determination on cost effectiveness is made by the Division with consideration of
monetary costs as well as potential environmental impacts.
Response: The following table presents the cost analysis for several types of wastewater systems. Given the
information presented above,the only technologically feasible alternative is the Discharge System. The
"Install Cost"includes the estimated cost to design and install the specific type of system. The"Present
Value of Costs"is based on a discount factor of 1.2%.
Cost Analysis for 360Facility
Y ._._ 9Pd
r
Present
Install 20 yr Total Cost Value
4L
Cost Annual Cos 20 years of Costs
yType �._ ($) o ($) _ 1 ($) ($)
ISub-Surface System _L$37,000 $24,534 L $61,5534 $58,482
NonDischa e System _$48,850 $21,444 $70,294 $67,631
Reclaimed System $52,150 $23,753L $75,903 $72,959
Discharge System L $24,250 $17,417 $41,667 $39,495
EAA Guidance Document Revision:April 2014
Page 8 of 8

Appendix A. Site Maps
For
System Alternatives Analysis
- Subsurface System Option
- Non-Discharge System Option
- Reclaimed Water Option

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Reclaimed Water
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\�/� N Ern CREATED DN;
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RELEASED BY. RELEASED ON.
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�dALED FOR 11"X 17" aR�T Reclaimed Water Option SE-3

Appendix B. Present Value Cost Analysis
For
System Alternatives Analysis
- Subsurface System Option
- Non-Discharge System Option
- Reclaimed Water Option
- Surface Discharge Option

Engineering Alternatives Analysis
PVCA Calculation
Cost Analysis for 360gpd Facility
Present
Install 20 yr Total Cost Value
Cost Annual Cost 20 years of Costs
System Type ($) ($) ($) ($)
Sub-Surface System $37,000 $24,534 $61,534 $58,482
Non-Discharge System $48,850 $21,444 $70,294 $67,631
Reclaimed System $52,150 $23,753 $75,903 $72,959
Discharge System $24,250 $17,417 $41,667 $39,495
Sub-Surface System
Co $37,000 Estimated Cost to Design and Install System
r 1.200%
PV = co + E C ,
r=t (1 + r)`
PV 1$58,482 (Present Value of Costs
Cost Summary Table
Year Annual Fee Operations Fee Sample Cost Pumping Cost UV Replacement Cost C, Total Ct PV
Increase 5%every 3 Increase 3%yearly Increase$50 every 5 Increase 3%yearly Annual Incurred Annual Total Discounted Present Value of
years years Costs($) Discounted Cost Costs($) Costs($)
($)
1 60 500 258 0 125 943 932 932 37,932
2 . 60 500 266 0 129 954 932 1,864 38,864
3 60 500 274 0 133 966 932 2,796 39,796
4 60 525 282 0 137 1,004 957 3,753 40,753
5 60 525 290 300 141 1,316 1,240 4,993 41,993
6 60 525 299 0 145 1,029 958 5,951 42,951
7 60 551 308 0 149 1,069 983 6,934 43,934
8 60 551 317 0 154 1,082 984 7,917 44,917
9 60 551 327 0 158 1,096 985 8,902 45,902
10 60 579 337 350 163 1,489 1,321 10,223 47,223
11 60 579 347 0 168 1,154 1,012 11,235 48,235
12 60 579 357 0 173 1,169 1,013 12,248 49,248
13 60 608 368 0 178 1,214 1,039 13,288 50,288 ,
14 60 608 379 0 184 1,230 1,041 14,329 51,329
15 60 608 390 400 189 1,647 1,377 15,706 52,706
16 60 638 402 0 195 1,295 1,070 16,776 53,776
17 60 638 414 0 201 1,313 1,072 17,848 54,848
18 60 638 426 0 207 1,331 1,074 18,921 55,921
19 60 670 439 0 213 1,382 1,102 20,023 57,023 ,
20 60 670 452 450 219 1,852 1,459 . 21,482 58,482
24,534

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Cost Summary Table
Year Annual Fee Operations Fee Sample Cost Pumping Cost UV Replacement Cost Ct Total Ct PV
Increase 5%every 3 Increase 3%yearly Increase$50 every 5 Increase 3%yearly Annual Incurred Annual Total Discounted Present Value
years years Costs($) Discounted Cost Costs($) of Costs($)
(5)
1 60 350 122 0 125 657 649 649 24,899
2 60 350 126 0 129 664 649 1,298 25,548
3 60 350 129 0 133 672 648 1,946 26,196
4 60 368 133 0 137 697 665 2,611 26,861
5 60 368 137 300 141 1,006 947 3,559 27,809
6 60 368 141 0 145 714 665 4,223 28,473
7 60 386 146 0 149 741 681 4,905 29,155
8 60 386 150 0 154 750 681 5,586 29,836
9 60 386 155 0 158 759 682 6,268 30,518
10 60 405 159 350 163 1,137 1,010 7,277 31,527
11 60 405 164 0 168 797 699 7,976 32,226
12 60 405 169 0 173 807 699 8,676 32,926
13 60 425 174 0 178 838 717 9,393 33,643
14 60 425 179 0 184 848 718 10,111 34,361
15 60 425 185 400 189 1,259 1,053 11,163 35,413
16 60 447 190 0 195 892 737 11,900 36,150
17 60 447 196 0 201 903 737 12,637 36,887
18 60 447 202 0 207 915 738 13,375 37,625
19 60 469 208 0 213 950 757 14,132 38,382
20 60 469 214 450 219 1,412 1,112 15,245 39,495
17,417

Attachment I
Local Government Review Forms

Engineers and Soil Scientists
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex, North Carolina 27502
919-859-0669 RECEIVED/DENR/DWR August 8, 2018
www.agriwaste.com
Mr. Thomas J. Bonfield AUG 2 0 2018
City Manager Water Resources
101 City Hall Plaza Permitting Section
Durham, North Carolina, 27701
RE: Local Government Review Form
Application for Discharge System—Durham Polaris
106 Stallings Road, Durham, NC 27703
Dear Mr. Bonfield,
Enclosed please find a Local Government Review Form required for a Certificate of
Coverage application supporting a proposed wastewater treatment system (system). The
proposed system will be permitted under the NCG550000 General Discharge Permit for
Single Family Residences and other 100% Domestic Waste Discharges. The proposed
system will serve an existing retail facility (Durham Polaris) located in Durham County,
North Carolina. The proposed system will replace a failed sub-surface system that
currently serves the residence.
The site has been deemed unsuitable for ground absorption sewage treatment systems by
the Durham County Environmental Health Department. It is my opinion that a
wastewater treatment system covered by the General Discharge Permit is the only
technologically and economically feasible option for this residence.
Will you please complete (sign and notarize)the enclosed form for inclusion in the
application for the proposed system. This residence is located in Durham County and is
located outside the Durham City limits. Please note that this form is only meant to
determine zoning/jurisdiction information for the city, and does not indicate your
approval of the proposed system.
I appreciate your time and efforts in completing this form. If you have any questions or
comments,please feel free to contact me at 919-367-6310.
Best Regards,
Kevin Davidson, P.E.
V.P. of Engineering

Durham Polaris
106 Stallings Road
Durham, NC 27703
Attachment A. Local Government Review Form
General Statute Overview: North Carolina General Statute 143-215.1 (c)(6) allows input from local governments in the
issuance of NPDES Permits for non-municipal domestic wastewater treatment facilities. Specifically, the Environmental
Management Commission(EMC)may not act on an application for a new non-municipal domestic wastewater discharge facility
until it has received a written statement from each city and county government having jurisdiction over any part of the lands on
which the proposed facility and its appurtenances are to be located. The written statement shall document whether the city or
county has a zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is
consistent with the ordinance. The EMC shall not approve a permit application for any facility which a city or county has
determined to be inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to
have statewide significance and is in the best interest of the State.
Instructions to the Applicant: Prior to submitting an application for a NPDES Permit for a proposed facility,the applicant
shall request that both the nearby city and county government complete this form. The applicant must:
• Submit a copy of the permit application(with a written request for this form to be completed)to the clerk of the city and
the county by certified mail,return receipt requested.
• If either(or both) local government(s) fail(s) to mail the completed form,as evidenced by the postmark on the certified
mail card(s),within 15 days after receiving and signing for the certified mail,the applicant may submit the application to
the NPDES Unit.
• As evidence to the Commission that the local governments) failed to respond within 15 days,the applicant shall submit
a copy of the certified mail card along with a notarizedletter stating that the local government(s)failed to respond within
the 15-day period.
Instructions to the Local Government: The nearby city and/or county government which may have or has jurisdiction over
any part of the land on which the proposed facility or its appurtenances are to be located is required to complete and return this
form to the applicant within 15 days of receipt. The form must be signed and notarized.
Name of local government Durham County
(City/County)
Does the city/county have jurisdiction over any part of the land on which the proposed facility and its appurtenances are to be
located? Yes[ ] No[ ] If no,please sign this form,have it notarized,and return it to the applicant.
Does the city/county have in effect a zoning or subdivision ordinance? Yes[ ] No[ ]
If there is a zoning or subdivision ordinance in effect,is the plan for the proposed facility consistent with the ordinance? Yes [ ]
No[ ]
Date Signature
(City Manager/County Manager)
State of ,County of
On this day of , ,personally appeared before me,the said
name to me known and known to me to be the person described in
and who executed the foregoing document and he(or she)acknowledged that he(or she)executed the same and being duly sworn
by me,made oath that the statements in the foregoing document are true.
My Commission expires .(Signature of Notary Public)
Notary Public(Official Seal)
EAA Guidance Document Revision:April 2014
Page 9 of 8

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• Print your nal*and address on the revenue X At ri t. D r~ridttt
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Attachment J
Plans and Specifications for the Proposed Discharge System

wT
z-i-\\
Engineers and Soil Scientists FINAL DESIGN
Agri-Waste Technology, Inc. NOT RELEASED FOR
501 N. Salem Street, Suite 203 CONSTRUCTION
Apex, North Carolina 27502
919-859-0669
www.agriwaste.com
106 Stallings Road
Durham, NC 27703
Durham County
Plans and Specifications for Discharge System
�% titult 1p,,�s c<���
s�
il SEAL
024582 `cl
moe,,Ic
�a 1�
Date: August 10, 2017
Design Engineer: Kevin D. Davidson, P.E.
Agri-Waste Technology, Inc.
501 N. Salem Street, Suite 203
Apex,NC 27502
Office: 919-859-0669
Direct: 919-747-2306
Cell: 919-623-3538
Email: kdavidson(&,,agriwaste.com

,i/ N/4/71
Engineers and Soil Scientists
Agri-Waste Technology, Inc. FINAL DESIGN
501 N. Salem Street, Suite 203 NOT RELEASED FOR
Apex, North Carolina 27502 CONSTRUCTION
919-859-0669
www.agriwaste.com
106 Stallings Road
Durham, NC 27703
Durham County
Plans and Specifications for Discharge System
• Narrative Description of Discharge System
• Design Spreadsheets
• Drawings of Proposed System
• Tank Specification Sheets
• Access Riser Adapters, Risers, Lids
• Effluent Filter Specification
• Specification for AdvanTex AX-20 RT Pod
• Pump Vault Specification(Integrated into AdvanTex Pod System)
• Specification for Re-circulation Tank Pump (Integrated into AdvanTex Pod System)
• Specification for Control Panel and Float Controls (AdvanTex Pod System)
• Specification for UV System

Narrative Description
of
Discharge Treatment System
The Discharge System that has been designed considers the following components:
- Septic Tank
- AdvanTex AX20-RT Treatment Pod
- UV Disinfection
- Discharge Outlet
- Control Panel
Due to the advanced technology in this system, a Certified Operator should be contracted to
maintain this system.
Septic Tank
A new 1,250-gallon septic tank will be installed for this system. An Orenco 8"Biotube effluent filter
will be installed in the outlet end of the septic tank. 24"access risers will be installed on both the inlet
and outlet ends of the septic tank. To facilitate the installation of the access risers,a mounting base
will have riser adapters cast into the tank top during construction. All wastewater from the facility,
including greywater,will be routed into the septic tank. Waste that exits the septic tank will flow via
gravity into the AdvanTex AX20-RT Treatment Pod.
AdvanTex AX20-RT Treatment Pod
The treatment component of the system is an AdvanTex AX20-RT treatment pod. The pod is an
integrated unit that combines recirculation, treatment, and discharge modules into a single, sealed
unit. Liquid from the septic tank will flow via gravity to the inlet of the treatment pod and into the
recirculation tank portion of the AX-RT unit. Liquid from the recirculation tank will be periodically
applied across the filter fabric. Wastewater will be sprayed over the textile sheets. The wastewater
percolates down through the textile sheets and is distributed between the recirculation chamber and
discharge chamber by means of the tank baffle. The treated wastewater then exits the AX-RT unit via
gravity to the discharge outlet after passing through the UV disinfection system within the AX-RT
unit.
The recirculation pump is controlled by a system of 3 floats that operate the recirculation pump in a
Timed Dose arrangement. Float 1 (lowest elevation) is a redundant off float. Float 2 is a Peak
Enable Float and Float 3 acts as a High Water Alarm. Under normal operation, the redundant off
float will be engaged thereby activating the timer in the control panel. At the pre-set interval, the
pump will engage and distribute effluent over the textile fabric("on"cycle). Following this period,
the pump will turn off and rest for a designated time("off'cycle)". During periods of high water in
the recirculation portion of the tank, the Peak Enable float will engage and reduce the pre-set"off"
time and thereby send increased flow across the fabric. If the water level in the recirculation tank then
fails to decrease, the High Water Alarm will activate.
1

To prevent groundwater from affecting the pod, the pod will be installed on a bed of gravel. Anti-
flotation measures or a concrete ring installed around the mid-flange will be installed to provide extra
ballast to prevent the flotation of the pod during high water table conditions.
UV Disinfection
Disinfection for the system will be accomplished using a UV system. The UV light should operate for
approximately one year prior to needing to be replaced. If the UV light burns out or loses sufficient
intensity(below a set threshold) an alarm will activate and disable the system pump. An alarm light
on the control panel will also illuminate. When the alarm is activated,the homeowner should reduce
water use(laundry, dishes, washing)until the system is operating properly.
Discharge Outlet
The system discharges into a roadside ditch located off of the southeastern property line. Riprap will
be placed at the discharge location to provide aeration of the water as it is discharged and also as
erosion protection. Vegetation and debris should be kept clear of the discharge location. A grate will
be installed on the discharge pipe to prevent animals and rodents from entering the discharge pipe.
Control Panel
One control panel will be installed with this wastewater system. This panel will control operation of
the re-circulation pump and UV system. If desired,this panel can be connected to a land-based phone
line that will notify the operator of system operation.
2

Discharge Wastewater Treatment System Design Calculations
Date: 8-Aug-18
PROJECT: Durham Polaris WWTS
Location: 106 Stallings Road
Durham,NC 27703
County: Durham County
SEPTIC TANK SIZING
Daily Flow Estimate
Flow/Unit
#of Units 'Units (gpd/unit) Flow/Day(gpd)
3 BR 120 360
TOTAL DAILY FLOW(Q)= 360 gpd
`Retail Facility to be sized at flow of former 3-bdr residence.Actual daily flow estimated at 100gpd
Septic Tank Volume/Size(based on denitrification process)
For Single Family Residences with 5 bedrooms or less,
#Bedrooms I Min.Volume(gal)
2 1000
3 1250
4 1500
5 1750
Apprmdmate Return Flow from Pod 540 gpd
60%of Daily Flow 216 gpd
Total(apprx 1 day retention) 756 gal
TANK SIZE PROVIDED= 1,250 gal.
RECIRCULATION TANK&POD SIZING
For Single Family Residences with 5 bedrooms or less,
#Bedrooms I Daily Design Flow I AX Units
4 or less <480 gpd AX-20-RT
5 600 gpd AX-25-RT
Daily flow = 360 gpd
AX Unit Required= AX-20-RT
Timer Settings
Required Doses/Day 96
Recirculation Ratio 3 :1
Design Flow(Q) 360 gpd
Flow to Pods 1,080 gpd
Flow to ST 540 gpd
Pump Flow 1,620 gpd
Dose Volume to Pod 11.3 gallons
#of Pumps 1
Pod Flowrate 12 gpm
Return Flowrate 6 gpm
Pump Flowrate 18.00 gpm
#of Cycles/day 96
Cycle Volume 16.9 gallons
Cycle Run time 0.94 min
Cycle Off Time 14.06 min

Septic Tank Buoyancy Calculation
Project: Durham Polaris WWTS Date: 8-Aug-18
Location: 106 Stallings Road
Durham, NC 27703
County: Durham County
Tank Size(nominal)= 1,250 gallons
Properties/Assumptions:
Min. liquid level to be maintained in tank at all times after initial installation.
Assume groundwater table is equal to or higher than top of tank.
(Buoyancy is the same as long as water table is higher than top of tank.)
Effluent Density= 62.4 Ib/ft^3(Specific Weight of Water)
Concrete Density= 142.56 Ib/ft^3
Soil Cover Over Tank= 1.00 ft. (minimum)
Soil Bulk Density= 1.25 (typical value)
Tank Dimensions(from supplier):
Exterior Interior
Length= 10.46 ft. 9.96 ft.
Width = 5.46 ft. 4.96 ft.
Total Tank Depth = 5.13 ft.
Permanent Liquid Depth in Tank= 0 in.
0.00 ft.
Area of Riser Openings= 6.28 ft^2
Tank Weight(est.)= 11,000 lb. (based on manufacturer)
Buoyancy Force Calculation:
Buoyancy Force=Specific Weight of Water x Displaced Volume
Buoyancy Force= 18,256 lb.
Weight Calculation:
Tank Weight= 11,000 lb
Water Weight in Tank= 0 lb
Soil Weight Over Tank= 3,963 lb
Soil Tension Force= 4,037 lb
Total Weight= 19,000 lb
Note: Total weight must be greater than buoyancy force
so that tank will not float during high water table conditions.

AdvanTex AX20-RT Pod Buoyancy Calculation
Project: Durham Polaris WWTS
Location: 106 Stallings Road
Durham, NC 27703
County: Durham County
Properties/Assumptions:
RT Model = AX20 Gravity
All calculations are performed assuming completely submerged conditions, with no
liquid in the unit.
Effluent Density = 62.4 Ib/ft^3(Specific Weight of Water)
Net Beam Density = 67.55 Ib/ft^3
Net Soil Density = 67.6 Ib/ft^3
Unit Weight= 883 lb (based on manufacturer)
Supplemental Ballast Evaluation (Anti-Buoyancy Beam):
Top of beam to tank bottom = 6.00 in
Tank exposure length = 2.00 in
Burial depth to beam = 5.33 ft
Width of beam = 0.69 ft
8.25 in
Buoyancy Force Calculation:
Buoyancy Force= 12,475 lb (based on manufacturer)
Weight Calculation:
Tank Weight= 883 lb
Soil Weight on Beam = 11,826 lb
Weight of Beam = 129.2 lb
Total Weight= 12,838 lb
Note: Total weight must be greater than buoyancy force
so that tank will not float during high water table conditions.

Discharge Wastewater Treatment System-Elevation Calculations
PROJECT:Durham Polaris WWTS
Location: 106 Stallings Road
Durham,NC 27703
County: Durham County
Elevation Determination Sheet
Site Elevation Readings
Approximate Elevations Elevation
Dranline Invert at House 368.50 ft AdvanTex RT Unit Discharge Point
GS at Septic Tank 369.80 ft Pipe Length from ST outlet 3.50 ft Pipe Slope to Discharge Point 1.00%
GS at RT Unit 369.62 ft Slope of Line 1.07% Pipe Length 160.00 ft
Elevation at Discharge Invert 364.90 ft Ground Surface at RT Unit 369.62 ft Elevation at Discharge invert 364.90 ft
Elevation at Inlet Invert 367.64 ft
Distance to Inlet invert from top 25.8 in Float Settings Elev.(ft) Height
Septic Tank Top of Unit 369.79 ft from Tank
Ground Surface at Septic Tank 369.80 ft Cover over Inlet Invert 1.98 ft Recirculation Floor(in)
Cover over Septic Tank 12.00 in 23.79 in Low Water/Redundant Off 366.12 28
1.00 ft Extension Height 0.00 in Pump Override Timer 367.20 41
Elevation at top of Septic Tank 368.80 ft Height of Unit 72.00 in High Water Alarm 367.33 42.5
Distance to Inlet Invert from Top 0.96 ft 6.00 ft
Elevation at Inlet Invert of ST 367.84 ft Bottom Elevation 363.79 ft
Drainline Length From House 23.00 ft Outlet Distance from Bottom 32.50 in
Slope of Line 2.86% Outlet Elevation 366.50 ft
Distance to Outlet Invert from Top 1.13 ft Height of Unit Exposed 2.00 in
Elevation at Outlet Invert of ST 367.68 ft

Dbr - cm Do cr s S rfcce Disc - crce AWT
"-� A9r.Waare Tepnndogy.thp
501 N.Sa0m Saeet,Sage 307
Apex.North Cerdine 37503
919-959-0999
ww.e9rrxeete.com
Project Location: 106 Stallings Road
DurhOmPoe
Surface Discharge
Durham, NC 27703 Wastewater Treatment System
Durham County, NC °""H"°
4729 Ck heater 0,5
Cne5rop4.NC 27522
PIN# 0861 -03- 10-2987 -,,. , (019
'T1UR
Napnrd4i'7'763:,co_
i08 SE1t.� Ov ""SCam PIN/09919e7
Project Owner: Hal & Gail Pate `
4729 Old Weaver Trail PROFESSIONAL ENGINEER SFAS
Creedmoor, NC 27522p
(919) 730-1668 This document was
originally signed and
sealed by Kevin D.
Project Consultants: Kevin Davidson, P.E. %s Davidson,NC PE
VICINITY MAP #024582 on August 10.
2018. This medium
kdavidson©agriwaste.com shall not be considered
a signed and sealed
Chris VcGee, L.S.S. document.
cmcgee©agriwaste.corn
Agri—Waste Technology, Inc. „wt ,
501 N. Salem Street, Ste 203ROT FOR
C 0011
W. 99.0 DOI O SCRPTOl
Apex, NC 27502 Sheet Index
(919) 859-0669
(919) 233-1970 Fax Sheet 1 : Cover Sheet
Sheet 2: Property Layout
System Overview: 360 gpd Commercial Facility Sheet 3: Component Layout
Design Standard — Discharge Sheet 4: System Detail # 1
AdvanTex AX-20 RT Pod Sheet 5: System Detail #2 sHEETT111E
with Single Bulb UV Disinfection Cover Sheet
DRAWN ES CREATED Olt
K.Chaamm 8/10/2018
REVISED BY: REVISED ON:
RELEASED ES RELEASED Olt
SHEET WE
WW-1

6�,sti AWl
�Q
a °jry \Q S 46'22'51"E 204.72' ereln«r..naeenxi.In.ti
0.0-Waste Technology.Inc.
Q 9a,N.Salem Street Surae 203
F; S 46.25'03"E 150.06' roe�Na9 S 8 27502
169.68. Ie�. WB,&959-0e89
S 46'21'15"E yv°tom www.agnwsete.com
Q v a Stogy Durham Polaris
�'% t 1 t1 Ref---:_f,67-1.....,:,-0,-„----......
PB `Drp,'--.- Surface Dlacterge
\ t. 1 --....82,..-3--?2.e 1 4, Wastewater Treatment System
Pi M 1t \ 1A _ —_I4 — " t�.
t 1 v -----+ t 0.ream.
o N t 11 t_ C:LSI
– 20'32"E 180.63' I C__ za �'` lT Role am Polo
\ ` 4729 Oa Wever Troll
n t t1 A, 11 Boundary Removed _I— –p4.Q G°Fp\�G��S��• .j`•. a NC
6 Z 1 1 A, Qy — J — _ — 1 (9191 r,�-leea
142.41' Q'o s°ryP Coo' a'`• ``.....1
'I...., •• ``.
�4� Q S 4620'32"E I �1p A-
�f \ 1 I 1 '5. 0� ci? do ---1_ \ Dean Coot.9C
p, a,`� F' •�, 11✓It t I \I \h'4 44 ,,^i\c5" 1 :` C . PW ace lo-29er
& \0 1 ca.% .1 I I kl e�vd2ryy S dy ��b+ I .
c'ctb
adp
`0 4iQ ''''C.', Vit.,.Vit.,. 111 I1 4c7‘1.*(`
o(` I �¢Qg jl \\ 9 PROFESSIONAL ENGINEER SEAL
Q° 1 oa \ q1 Q 6 / 1 O-
cp,N44o A.
�\a11 C t�CA / g metal fencing 1
°1yyh"\1h 1`p1n1• eaCA `�c` / ealetr 1
�0oh 110301011 ��r,�r\c I • o',ziP 1 O This document was
ILa 1 g1 i �. �a 4 AQo�eo 1 p originally signed and
�C`�\rl,� �� 11�t°'111 q "o I �Qo'6eo o` It sealed
Davidson,NC PE
1` Go 8,.. � �� 1111 d1. o .`� i�,I I 1 #024582 on August 10,
"t �0 \, \,:.-, : 11`t1�1 G,o a-1
11[1,''',66.Ze.,,s, E I ® I 2018. This medium
ID
O01 11 E) 80 j oI m C I If
O shall not be considered
o
`,1 A'\ilx
t....;,‘. •1 J 3 1 "' ¢ 1 06 a signed and sealed
'il ) I i ! 0 1 :II I o, Z, \ co,
document.
s 11 11• 11 9 0 1 O 1co,,O�ZaryO• 1 G
N 1 1 ° .n 1 &,°4:e :�I \\ +`y\�}� 1 0
,,iii
1 1 t Z 1 O \\\ 1 , 0 to RELEASED FOR ONSTRUCOON
1 1 1 __ _
\���e I t '11
><—__t __ 1�� a' M. ISSUED NT =NM
le° : 1 1 ! 1 metol f-ncin• I -- _S Y.;: -- „,1
• 6�4. '"}try ,�v 1 1 1 I I — ! M
ii
ii
�Q at*.
1 I 1 O
In
C4 i Qoe I LO
�QC3 5 oQ
\ •
•Q I Cl oQ 47'82'08 15241' SHEET 1111E
C2 AIL Property Layout
Stallings R[o�adF,
Curve Retliu9 Lanpth Chord Chord Bear, r�UbI1C `/YY `\tt DRAWN AY. CREATED ON
Ci 971.00• 82.3T 82.35' N 44'36'19'W 60' P K Chaim. 8/10/2018
C2 971.00' 184.08' 183.80' N 38144'38'W0 50' 100' REVISED BY: REVBED ON:
C3 971.00' 15.87 15.87' N 30'50'42"el 1 .
C4 ' 971.00' 118.88' 118.31' N 2652'10'W RELEASED 8f: RELEASED 09
DRAW NUMBER
SCALED FOR 11"X17" SHEET Property Layout WW-2

A.,
Sell Scientist.
: - \ • • -• - - - _ _ - RBriW.W Technology.Inc
• 501 N.Sebm Street.Sucre 203
Apex NeM Carol..21502
919.85..9
..hrw egm'eeb.aom
Existing Building Durham Polaris
• Surface Discharge
Wastewater Treatment System
COO DL •CO csird,h
Hal k Call Pato
4725 ON war TAN
\ (919)770• Z1533
(515)730-IaIs 88
Inlarnefem
ce wee
Qw 700 Existing Septic Tank 0 717703
Se/� �� (Approx.Location) ria mn-05-10-2597
arc // To Be Abandoned
—
�— 10' Building Setback PROFESSIONAL ENGINEER SEAL
1
V UV is EDL This document was
((//��,,�� ry /`1/�ZQ�pTli originally signed and
1,-,, qST h' L Ifll sealed by Kevin D.
d� O -�CP \ NOTES: Davidson,NC PE
-Adjust tanks to meet site constraints.
EF se #024582 on August 10,
r-� -Confirm that 1%(min.)slope may be maintained from RT Unit outlet to 2018. This medium
I discharge outlet.If unable to maintain 1%slope to discharge outlet,
�.�— —•— — — — — — —'—'f—' shall not be considered
convert RT Unit to pump discharge model and convert effluent
ERL ERL discharge line to 1.0"SCH40 PVC. a signed and sealed
\ -Ball valve on effluent return line may be inside RT Unit or ST inlet riser. document.
0 5' ID'
-Properly abandon existing septic tank.
QCompo 0ntLayout _ FNA.
CESCII
NOT RELEASED FOR CONSTRUCTOR
n7, MO am =risk
Line Legend
4111,Fir
/ Line Name Size Type
Q ,haj1DL Drain Line 4.0" •
SCH 40 PVC
[� �7D,\Car EDL Effluent Discharge Line 4.0" SCH 40 PVC
�/� ERL Effluent Return Line 1.0" SCH 40 PVC
AA Nrwitallon
• a e w Rtpr9el
COMPONENT LEGEND SHEET TIRE
Ea -,,•e-S,i Component Layout
ST Septic Tank CP Control Panel
ad al RT Recirculation Tank UV UV Disinfection
Pum „ o...s.... A AdvanTex Pod P Pump
/' Ex
me Dan Sane CO Cleanout EF Effluent Filter DRAWN e7; CREATED ON
�/ It.Chapman 8/10/2018
0 0' IT Inlet Tee BV Ball Valve REVISED Efn REVISED aN
c) v
RELEASED ay: RELEASED ON
0 Discharge Location_
SCALED FOR 11"X17" SHEET
Component Layout DRAWING
OW
W_3

en
Cy�Cycle a Tinier SAM,a sre,e 1. Boundary information booed on Survey
Cycle Pun bm• completed by Joseph W. K°pherr,Professional Allirr
cra Oen.,. 14.30 mlnLand Surveyor.Survey recorded in Durham Engineers and Soli Scientists
naK rerun sone alc xrr•.xyPeeeer. a�r7.r Nelwn.a, 201my Register of Deeds(Book 194. Page yaA9N.Sere Street.Technology.
2m
41.1 raT la NIT a MODEL:TS 1250 STB _ •v. T..,. )
Ammo LEXINGTON.NC nese NON TRAFFIC n"•�l Apex,r+«459-N ensoz
a OP
2 Septic Tank to have approved Orenco Effluent steas9-Daae
emcee Dau TFL-xes 1250 Gallon Septic Tank ii I I�,1 1 1 1 11/11 /1/T' 4... PPPumpp. _ Filter model FTPS-0848-36 NC. vAN•vmpilwalthAPO"
3' ,ggN lip
4....,'TTA mon WePpAllen, "e Durham Polaris
III i v erg o PAX 036,7.-Ott6 ` ( a..t_ 3. Treatment system to be 100'from any well,
is 10'tram residence or building foundation. Surface Discharge
L1PKIn-use GICGe/1R'Ap®A[E mar ow act 60'from all Property Lines.Verification Wastewater Treatment System
L1°"rs - w.r of these setbacks to be performed by
-11 SP III �- 1 4•DiT.u TAW xuwr-u Y �'II N contractor,
` _- i��..j CUTLET.anti o,Or TANK m OMER Or aan-s• �'� o Aee �+ru.,..
l_ TOTTEN re.ye m CORD or omcTar f�I,I,I,I,I,I,I,I,I t +c'r =\ ,.d rorT/ a'- 4. Contractor shall backer around an access Do1e' natioNt
GoA Pate
Tv VIEW Nusxtaoas [[Win m VIM RATIO,m 1 ' J, a 1 TA a l L I
areae such that storm Water is shed away 4729 Old*eory Troll
ARE TO VIDES,aVE16aM SRS V DICT 1.OUTLET,'PIPS Crept mIaese�• from potential entry points. Cleedwar,NC 27922
TYPE m DICT a anuEr-ra-TCpCS at SR.0E[TS UM c-Sm. I- 7p. -I "e (919)730-1ete
CONCRETE Pa-I“.TWE VOW-ILSOD Lel
IM'mcaEm PER sun ass A2r20800pl.Reale.Took-Tap View R.11 5. Invert Navct na of all components o property
verified infold by contractor to ensure IDS Sta..
000.E Mrs proper operation. Stai Reid
a.,,re,m,.,>,,,,, NC mw
w.•haw lel 6. NI system piping to be SCH40 PVC except Caine.NC
1 I »::` ,.� STATE0µa _ 9VY�iLJ;!I Where noted RNI OBe1-o7-10-2m7
mn.e.M adr-250 e
as STS-310 - - ------- - .b t r Lw.rw.r _i i; 7. All gravity elbows to be long radius or
C
F-_a,-�,_,.,, r long sweeping type elbows.
a�^ PROFESSIONAL ENGINEER SEAL
t • I --Q- II I.. i__IIIi �l r� B. Actual installation and placement 01
1 VENT a e. 6 p _ treatment system to be overseen by
FLOW
moa
-'r T,:mucx ..,a.. t naW 9. Use Class'B'erosion control stone for
_ i ' HsWI
I structural base for outlet stabilization This document was
71....:L...........1 i •�.., 4.r �� :. cps ia:e=.ostructure. Use#5 or 157 stone for originally signed and
i
hsediment control. sealed by Kevin D.
1'-+-- F' I i I 10. Discharge line must be covered to o Davidson,NC PE
emx.r ;...,,,r minimum depth of 18". Discharge pipe outlet #024582 on August 10,
AX20800 p1.Rocco Tank-Side Viewoven,c,-,a. to have grate' 2018. This medium
Not to scale Not to scale DischargeCoember-CudVcw n. Fow from Be receiving ditch beak into the shall not be considered
-- -- - - system shall be prevented. a signed and sealed
0Septic Tank(or equivalent 1,250 gallon septic tank) AX20-RT UV AdvanTex Treatment System-FOR ILLUSTRATION ONLY Engineer Inspection required during system document.
- -.•�.--._,4 Q... n...._.�.. 12. installation and at final completion.
13. Contractor to seed and/or mulch
disturbed areas to coincide with existing
Install Safety Net londscape. Area shall not be left with
uncovered soil.
In Each Access Riser
14. Upon system completion.Contractor to supply
Engineer with documentation of
Meme Safety Net Pelee err Meer ee Installation and a signed letter indicating Mk SON
system was installed per approved design NOT RELEASED FOR CGNSTRUC 014
or noting any deviation from approved Ks dW OW CESCRF,pN
Wee a
design.
Clean,Tamped Backfill ��M,.e I M
aaa SNsly 15. Contractor to Metall phone or Internet line to
4"SCH 40 PVC Nu NK 11 M IPM VCOM control panel.
Lass B Rip Rae w/Grate
A. Ute= A r �. A. Throw.Ey, seer V IA,'I I7`'I 16- AdvanTex-RT Unit to be placed on gravel bed
-`�:�." .er. .r.'�� -` Wan s" I�IIII�'�I'1'I�I��II�III and backfilled with gravel.
• -. upA-.•' 17. Mount Control Panel a minimum of 24"
,W `ee. •' •e-, above grade.Power to panel to be installed
- - .=-=A-(=��(= Web.Nmu,R by licensed electrician per cods.
1::AIIKCI 1���a�e1� 18. Leak test required an septic tank and pod.
--, Contractor to property abandon costing septic
titer Fabric - #57 Gravel tank.Contractor shall provide documentaon
AIWA, 1 from Durham County.
lean,Tamped Backfill ndisturbed Earth `1I/' lli 'IIIIIIIIIi/ 19. Water spigot to be located on exterior of SHEET TIRE
/ / ` .W A,f facility within 50'of tanker.
� 20. Pour concrete collar around flange of System Detail #1
ii,411/4 rIIIIIIIII treatment unit or install anti-buoyancy beams
per manufacturer's recommendations.
.� ra 21. All safer,ofrom the facility,including
a.".. greywater,is to be conveyed to the septic DRAWN 98 CREATED OR
tank. K,Chapmm 8/10/2018
Eye can
lag ca,,,P 22. Separate circuits for each pump and Rim BY: REVISED ON:
14.sow new) alarm/control panel are required(1-120V,20
Not to scale Not to scale Not to scale
amp; 1-120V, 15 amp). Separate conduits RELEASED Eli RELEASED ORI
required for phone or Internet line.
23. Recirculation Timer Settings: ORA#1NC NUMBER
Dlscharte Riprap Detail Safety Net(Install in Septic Tank Risers) Ant-Buoyancy Inatalation TIME ON/OFF:0.83/14.38 minutes WW-4/I
Q... _ Q... . Q... _ h w 4
12 gam to Pod/6 qpm to Septic Tank.

ANA/T
Engineers and Soil Scientists
Control food 24'�-I A9n-Weare Technologycc
abaa ground(drt) 'I 501 N.Salem Street,Sued 203
- 4X;T' e..T Apex.NorM Caroline 27502
MOUNT PANEL DIRECTLY 914659 000g
4a6'yew pad TO POSTS OR TO www.egrwaete.am
2P aarmted Fiberglure Safety IM trap Solely Net SIP 4 Bury 30 min In .1 ALUMINUM PLATE
III Oh Blaine..50(4) OukY dcomM Pict Disconnects
vent natural 1. CONTROL (grind off protruding sawn) Durham Polaris
Seel Bolts(4) MeritedRear UV Anil
Om W UNI PANEL Surface Discharge
8'above g005CSpke too Sbpe W o ay SINGLE O OOO Wastewater Treatment System
ulnae �� Cori In flea IM� ' ham una
Boll Vohs Rear adapter ----------
7_-„
CONDUR Y
� PAWN IlL. io 1
Baum .�..' ���' �� �I 'V'p�w ugi�`aeP��:'��:� Il7� � :N �_ (ro spicae)
I ',WEN E ua h J I�. I . • I- T� war Mambos:
.... - :..: ll CONDUIT Hol a gal Pate
unddt.b.a 1 +-l• �r.Imel -+ Pum Lk
Each ,f J ., -- IL-,T- SUPPORT 2'min. 7729 ad darer Tmn
��\\\�\\\\\\■ I ' --i torr Ill-Tr i 2X4 TREATED-SECURE [phone]
li
Flo.AMa RISER OR ,NC 27572
III .t.= I Intl�IWITH 4-3'DECK SCREWS Ileo IdemwBen:nom_\\\\\\i \\/\\\al I-II � •^•1i TT' CORRUGATED PIPE, t ILII l lllal�,'ek, pMy�\\\\\\\\ 0\\\5111-yyy-1:• i, 4/� IIIY1 Mpll PER POST IBE Saiq Pond
i Prhen NC 27703
\\\\\� �l_TI-III 1 Durban cam3-NG
\ice GRAVEL Ria n Cm*-10-2987
a - ,_� III
j\\\\\\\� i\\ 111 :�:•: � - to g� Ua COVER CONDUR I III
\\\\\\-1x Home \%\\\S ��-1 : _ h°'9°
O\ a I- MINIMUM 18- I,�o'.e,',IL
Hobo a dldurbl0 ��
\� i Emuent \\\\�\\\\ y, ••••••• TO RT UNIT TO POWER SOURCE PROFESSIONAL ENGINEER SEAL
Mar WM
its Baffled Se•CK Tank RP 0e49-3e-NC \\� goutnp ... ALL
I Rede INSTALL TO E 3/4"min)
Pore'J •__ Pim Vault CONDUITS AS
NEEDED 3'BURIAL DEPTH This document was
■ - /5 or/57.• = RedrWofen MINIMUM originally signed and
I= _ �- - 1- - T' "u'" sealed by Kevin D.
I1 I�1I-11- 1 -' -1 h I_I 1=1 1-1 1-
Undisturbed Earth Undisturbed Earth PeNm Vohs Davidson,NC PE
#024582 on August 10,
Not to scale Not to scale 2018. This medium
shall not be considered
Q. Q.
System Detail-FOR ILLUSTRATION ONLY Control Pinel Support(or equivalent) a signed and sealed
. ",...'_ document.
Elevation Determination Sheet
Site Elevation Readings
EEO
Approximate Elevations Elevation NOT RELEASED FOR COIISinlcTUN
Dranline Invert at House 368.50 ft AdvanTex RT Unit Discharge Point c. =ED MR =PRO
GS at Septic Tank 369.80 ft Pipe Length from ST outlet 3.50 ft Pipe Slope to Discharge Point 1.00%
GS at RT Unit 369.62 ft Slope of Line 1.07% Pipe Length 160.00 ft
Elevation at Discharge Invert 364.90 ft Ground Surface at RT Unit 369.62 it Elevation at Discharge invert 364.90 ft
Elevation at Inlet Invert 367.64 It
Distance to Inlet invert from top 25.8 in Float Settings Elev.(ft) Height
Septic Tank Top of Unit 369.79 ft from Tank
Ground Surface at Septic Tank 369.80 ft Cover Geer Inlet Invert 1.98 ft Recirculation Floor(in)
Cover Deer Septic Tank 12.00 in 23.79 in Low Water/Redundant Off 366.12 28
1.00 ft Extension Height 0.00 in Pump Ovemde Timer 367.20 41 s"EET TRU
Elevation at top of Septic Tank 368.80 ft Height of Unit 72.00 in High Water Alarm 367.33 42.5 System Detail #2
Distance to Inlet Invert from Top 0.96 ft 6.00 ft
Elevation at Inlet Invert of ST 367.84 ft Bottom Elevation 363.79 ft
Drainline Length From House 23.00 ft Outlet Distance from Bottom 32.50 in DRAWN rte CREATED at
Slope of Line 2.86% Outlet Elevation 366.50 ft K.Chapman 8/10/2018
REVISISED Ott
Distance to Outlet Invert from Top 1.13 ft Height of Unit Exposed 2.00 ins Eft P
EV
Elevation at Outlet Invert of ST 367.68 ft RELEASED Br: RELEL\TD ON:
DRAWING NUMBER
0Elevettan Determination WW-5

**NOTE-USE 24' 125 1/2' — SHOAF PRECAST SEPTIC INC.CAST-IN-PLACE MODEL: TS 1250 STB
ORENC❑ RISER — 119 1/2 4130 WEST US HWY 64
ADAPTER NON TRAFFIC
LEXINGTON, NC 27295
PHONE [phone] 1250 Gallon Septic Tank
1 • J • .:. N. 3 FAX [phone]
3•_.. 6'— ,.'f
WWW.SHOAFPRECAST.COM
'4 / SHOAF-1,250 SEPTIC TANK
59 /2' •
Orenco 24' Orenco 24' STB-389
Poser Base * Riser Base N 113
Lid - Lld \\ LIQUID CAPACITY-1,252 GALLONS/10" AIRSPACE
65 /z• TANK HEIGHT-61 '
—za' 4 4' INLET &• : OUTLET BOOTS BOTTOM OF TANK TO CENTER OF INLET-52'
TOP VIEW
••• . \
e. f. BOTTOM OF TANK TO CENTER OF OUTLET-50'
xNETOP VIEW MEASUREMENTS LENGTH TO WIDTH RATIO-2 TO 1
ARE TO WIDEST DIMENSIONS SIZE OF INLET & OUTLET-4' PIPE
TYPE OF INLET & OUTLET-POLYLOCK OR EQUAL (MEETS ASTM C-923)
CONCRETE PSI-40001 TANK WEIGHT- 11,000 LBS.
REINFORCEMENT PER STATE CODE
SCALE - N.T.S.
Cast in Place Orenco Riser Adapters
• .•. •I• . . BMs 4,
**NOTE 1' BUTYL RUBBER STATE
MASTIC SEALANT APPROVAL #
125 1/2' CONTINUOUS IN JOINT
65 1/2' SHOAF-1250
SIDESTB-389
INLET 1191/2 — 0 TLET 59 1/2'
78 3/4' 38 3/4' - ■*NOTE-TEE NOT .�•_� ,
SUPPLIED i
10' AISPACE /�// WATER LEVEL j i J' O
Ali
VENT) \2' VENT
• • 0� SLOT
61 /2' 54 }/2' ` ' Q3•
57'TO BOTTOM FLOW 44 /2' 4:'TO BOTTOM \::) 000 OOO
OF 4' INLET). THROUGH • OF 4' OUTLET \ m4' FLOW
THROUGH
•. SIDE VIEW � 6• ' END VIEW r Ai
— 75' 35' — 56' -
116' - — 62'
— 122'

e renco Technical Data Sheet
SYSTEMS
PRTA ABS Tank Adapters
Applications General
PRTA tank adapters are used to provide a structural,watertight method Orenco's PRTA tank adapters are molded plastic products and there-
of installing a 24-or 30-inch(600-or 750-mm)access riser over a tank fore have excellent part-quality and consistency.PRTA tank adapters
opening. can be cast into a tank or fastened to the top of the tank with a bolt-
down kit.The bolt-down kit consists of either six or twelve(depending
on model)stainless steel concrete anchors and a roll of butyl tape.
• A ►
The 0.D.of the vertical flange matches the I.D.of Orenco's ribbed
risers,which provides a suitable joint to seal with MA320,ADH100,
SS115,or SS140 adhesive.
Cast in Place Tank Adapters
'On for each end of each tank.
Standard Models 2 x PRTA24
PRTA24,PRTA30
PRTA24BDKIT(6 anchors),PRTA30BDKIT(12 anchors)
Top view
Product Code Diagram
PRTA
I Riser diameter
0 24 = 24"riser(Perma-Loc,Ultra-Rib,KOR FLO)
30 = 30"riser(Perma-Loc,Ultra-Rib)
ABS riser tank adapter
B ►
Materials of Construction
Tank adapter ABS
D Side view
Concrete anchors
Sealant Stainless steel anchor bolts
Butyl tape
Specifications
Dimensions* PRTA24 PRTA30
A-Outside dia.,in.(mm) 23.38(594) 29.25(743)
B-Flange dia.,in.(mm) 26.75(679) 34.25(870)
C-Horizontal flange width,in.(mm) 2.00(51) 2.50(64)
D-Vertical flange height,in.(mm) 3.50(89) 3.25(83)
`The tank adapter has a nominal 0.25 inch(6 mm)thickness.
Orenco Systems®Inc.,814 Airway Ave.,Sutherlin,OR 97479 USA•800-348-9843•541-459-4449•www.orenco.com NTD-RLA-PRTA-1
Rev.2.0,O 03/17
Page 1 of 1

Orenco® " Technical Data Sheet
SYS T E m S r`
Access Risers — Ultra-RibTM
Applications General
Orenco's Access Risers provide access to septic tank openings and Orenco Ultra-Rib"Access Risers are constructedof ribbed PVC pipe
can be cast into the tops of concrete tanks,bonded in place,or bolted and are available in 12-, 18-,21-,and 24-in.diameters.They can be
down using a riser tank adaptor.They can also be used as valve ordered in 3-in.(76.2-mm) increments in lengths up to 13 ft(3,96 m)
enclosures. for 12-and 18-in.diameter risers,and up to 14 ft
(4.27 m)for 21-and 24-in.diameter risers.Orenco Ultra-Rib riser
pipe is also available in truckload quantities.A complete line of Orenco
pipe-cutting tools makes it easy to fabricate risers in your shop or in
the field
Standard Models
RR12XX,RU18XX,RR21XX,RR24XX
'V
Product Code Diagram
_ R + +
I Discharge grommet option,in(mm):
Blank = no dischargegrommet
10 = 1(25)
12 = 114(32)
15 = 114(38)
.,< 20 = 2(50)
Splice box grommet or splice box options(choose one):
Blank = no grommet or splice box
Risers:2 x RR24 XX S = grommet installed,1-in.(25-mm),fits SB1-SB4
-Adjust riser height to allow for minimum 6"above ground. L = grommet instalOreno.-in.(32-mm),al splice
585-SB6
9 SX = hole drilled for Orenco®external splice box,
-All risers to be sealed to tank adapter with specified or
S1 = grommet and S81 internal splice box installed
adhesive. S2 = grommet and SB2 internal splice box installed
-All risers to be singlepiece and cut at site usingcircular S4 = grommet and SB3 internal splice box installed
9 S4 = grommet and S84 internal splice box installed
L5 = grommet and SB5 internal splice box installed
saw with guide. L6 = grommet and SB6 internal splice box installed
or
XS = grommet and simplex explosion-prod splice box installed,
XD = grommet and duplex explosion-proof splice box installed,
XT = grommet and triplex explosion-proof splice box installed,
I Riser height in inches(3-in.increments standard)
Riser diameter:
12= 12-in.(300-mm)'
18= 18-in.(450-mm)'
21 = 21-in.(525-mm)
24= 24-in.(600-mm)
Riser type code:
R = 12-in.(300-mm),21-in.(525-mm),and 24-in.(600-mm)diameters
Materials of Construction u = 18-in.(450-mm)diameter
PU= bulk Uttra-RibTM pipe,all diameters
Ultra-RibTM PVC Pipe: PVC Riser,Uttra-Rib'
Not intended for use over pump vaults
tRequires minimum 18-in.(457-mm)riser height
Specifications I For Class!Division I environments
Model RR12XX RU18XX RR21XX RR24XX
I.D.,in.(mm) 11.74(298) 17.65(448) 20.50(521) 23.50(597)
Wall Thickness-excluding ribs,in.(mm) 0.10(3) 0.19(5) 0.25(6) 0.25(6)
0.D.-including ribs,in.(mm) 13.13(334) 19.44(494) 22.63(575) 25.63(651)
Weight,lbs per ft(kg per m) 5(7.4) 11 (16.4) 15(22.3) 19(28.3)
Orenco Systems®Inc.,814 Airway Ave.,Sutherlin,OR 97479 USA•800-348-9843•541-459-4449•www.orenco.com NTD-RLA-RR-2
Rev.3.0,®03/17
Page 1 of 1