NCG550486_Authorization to Construct_19920824 (2)

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State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street•Raleigh,North Carolina 27611
James G.Martin,Governor A.Preston Howard,Jr.,P.E.
William W.Cobey,Jr.,Secretary Acting Director
August 24, 1992
Mr.Roy Riddle
3041 Wagonwheel Court
Belmont,North Carolina 28012
Subject: Permit No. NE998.
Authorization to Construct
Roy Riddle Residence
Wastewater Treatment Facility
Gaston County
Dear Mr.Riddle:
A letter of request for an Authorization to Construct was received July 2, 1992, by the Division
and final plans and specifications for the subject project have been reviewed and found to be satisfactory.
Authorization is hereby granted for the construction of 450 GPD single family residence wastewater
treatment and discharge system consisting of an existing washer pit, and existing septic tank,a new 1,000
gallon septic tank, a sand filter distribution box and 323 square foot surface sand filter (lined) with
removable cover (approx. 1.39 GPD per sq. ft. loading rate), a tablet chlorinator, a four chamber (in
series) covered chlorine contact chamber, a 15 foot by 2.5 foot rip rap post aeration trough for discharge
point, and all associated piping(4 inch gravity line between facilities),valves,controls,and appurtenances
with discharge of treated wastewater into an unnamed tributary to South Fork Catawba River, classified
Class WS-III waters.
This Authorization to Construct is issued in accordance with Part III paragraph B of NPDES
Permit No. NCO074888 issued February, 16, 1989, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No. NC0074888.
The sludge generated from these treatment facilities must be disposed of in accordance with G.S.
143-215.1 and in a manner approved by the North Carolina Division of Environmental Management.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action,including those as may be required by this
Division, such as the construction of additional or replacement wastewater treatment or disposal facilities.
Regional Offices
Asheville Fayetteville Mooresville . Raleigh Washington Wilmington Winston-Salem
704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollution Prevention Pays
P.O.Box 29535,Raleigh,North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

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The Mooresville Regional Office,phone no. 704/663-1699 shall be notified at least forty-eight
(48) hours in advance of operation of the installed facilities so that an in-place inspection can be made.
Such notification to the regional supervisor shall be made during the normal office hours from 8:00 a.m.
until 5:00 p.m. on Monday through Friday,excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been installed in
accordance with the NPDES Permit, this Authorization to Construct and the approved plans and
specifications. Mail the Certification to the Permits and Engineering Unit,P.O. Box 29535,Raleigh, NC
27626-0535.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
The sand media of the surface sand filter must comply with the Division's sand specifications. The
engineer's certification will be evidence that this certification has been met.
A leakage test shall be performed on the septic tank to insure that any exfiltration occurs at a rate
which does not exceed twenty (20) gallons per twenty-four (24) hour per 1,000 gallons of tank capacity.
The engineer's certification will serve as proof of compliance with this condition.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Environmental Management in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from complying
with any and all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information,please contact Mr. John Seymour telephone number 919/733-
5083.
Sincerely,
I 1
A. Presigh Howard, Jr., P.E.
cc: Gaston County Health Department
Mooresville Regional Office,Water Quality
Training and Certification Unit(Single Family Residence,no rating)

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To: Permits and Engineering Unit
Water Quality Section
Date: July 20, 1992
AUTHORIZATION TO CONSTRUCT '
County: Gaston R E
Permit No. : AC0074888 JUL 2 1 1992
MRO No. : 92-131
PART I - GENERAL INFORMATION ``` °€ "" � SUPPORT BH
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1. Facility and Address: Roy Riddle Residence
3041 Wagonwheel Court
Belmont, North Carolina 28012
2 . Date of Investigation(if conducted): N/A
3 . Report Prepared by: W. Allen Hardy, Environmental Engineer I
4 . Persons Contacted and Telephone Number: N/A
5. Verified Discharge Point(s) , List for all discharge points:
Latitude: 350 12 ' 26"
Longitude: 810 02 ' 00"
Attach a USGS map extract and indicate treatment facility
site and discharge point on map. Ensure discharge point(s)
correspond to NPDES permitted discharge points.
USGS Quad No. : G 14 NE USGS Quad Name: Belmont, N.C.-S.C.
6 . Size (land available for expansion and upgrading) : There is
adequate land available for the proposed sand filter.
Expansion or upgrading appeared to be limited.
7 . Topography (relationship to flood plain included) : The
topography was mostly flat with slopes less than 5%.
8. Location of nearest dwelling: The nearest dwelling is
approximately 50 feet from the proposed sand filter.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of existing treatment facility: The existing treatment
facility is a subsurface nitrification system with a septic
tank and ,four (4) drain lines.
2 . Type of proposed treatment facility: The proposed treatment
facility is a surface sand filter with chlorination and post
aeration.

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3. Sludge handling and disposal scheme: An approved method of
sludge disposal should be submitted prior to approval of the
A to C.
4. Treatment plant classification (attach completed rating
sheet) : Class I
5. SIC Code(s) : 9999
Wastewater Code(s) :
Primary: 04
Secondary:
Main Treatment Unit Code: 44007
PARTS III - EVALUATION-AND. RECOMMENDATIONS
The permittee, Roy Riddle, has submitted a request for
Authorization to Construct a surface sand filter at the Riddle
Residence. The present system is a subsurface nitrification
treatment facility that has failed, been repaired and since failed
again.
A review of the plans and specifications did not reveal any
structural or geographic problems associated with the sand filter.
However, there is no design information to support the size of the
sand filter (hydraulic loading) and chlorinator (detention time) .
This information should be submitted and approved prior to approval
of the A to C.
It is recommended that the A to C be issued pending the review
and approval of the plans and specs by the Permits and Engineering
Unit as well as an approved means of sludge disposal .
?tee 2
Signature of Report eparer
Water Quality Regi al Supervisor
2 2—
Date