NCG550056_Staff Report_19931119

cc: Permits and Engineering
Technical Support Branch 'APR 0 1�n�
County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: Yes No X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Mack Wiggins
Date: April 2 , 1993
NPDES STAFF REPORT AND RECOMMENDATION
County Forsyth
Permit No. Ne0030937
NCi-53ooS�
PART I - GENERAL INFORMATION
1. Facility and Address: Richard and Tammy Sexton O 3_o - 0`C
1040 Whirl Win Drive
Winston-Salem, NC 27101 Lo - IL-
2 . Date of Investigation: March 30, 1993
3 . Report Prepared by: Cynthia L. Myers
4 . Persons Contacted and Telephone Number: Tammy Sexton,
919/7730410
5. Directions to Site: Take I-40 east. Exit Linville Road.
Cross the bridge and turn right onto W. Mountain Street.
Turn left onto Walkertown-Guthrie Road. Turn left onto
Char-Win Drive. Turn right onto Whirl-Win Drive. The
Sexton residence is the next to the last home on the left.
6. Discharge Points(s) , List for all discharge points:
Latitude: 36° 08' 08" Longitude: 80° 09'28"
U. S.G. S. Quad No. C-18NW U. S.G.S. Quad Name Walkertown
7 . Site size and expansion area consistent with application?
X Yes No If No, explain:
8. Topography (relationship to flood plain included) : The
residence is located in a local alluvial position near the
sstream which has a high groundwater level. Surface water
drainage in this part of the development will gravitate in
this area.

•
9 . Location of nearest dwelling: The nearest dwelling is
located on either sided at approximately 100 feet.
10. Receiving stream or affected surface waters: Lowery Mill
Creek
a. Classification WS III
b. River Basin and Subbasin No. : Yadkin-Pee Dee (030704)
c. Describe receiving stream features and pertinent
downstream uses: The area can best be described as
rural residential. There are discharges from several
single family dwellings within the area. Lowery Mill
Creek flows through Char-Win Acres and then to Salem
Lake.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 450 GPD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the Waste
Water Treatment facility? 450 GPD
c. Actual treatment capacity of the current facility
(current design capacity) ? 450 GPD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years.
e. Please provide a description of existing or
substantially constructed wastewater treatment
facilities; Existing 900 gallon septic tank, followed
by a 391 square foot subsurface sandfilter; followed by
a disinfection system with 30 minute detention.
f. Please provide a description of proposed wastewater
treatment facilities.
g. Possible toxic impacts to surface waters:
h. Pretreatment Program (POTWs only) :
in development approved
should be required not needed
2 . Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit No.
NPDES Permit Staff Report
Version 10/92
Page 2

d. Other disposal/utilization scheme (Specify) :
Sludge is pumped from the system by a licensed septic
tank contractor and taken to the nearest WWTP for
disposal.
3 . Treatment plant classification (attach completed rating
sheet) .
4 . SIC Code(s) : 4952
Primary 04 Secondary
Main Treatment Unit Code: 4 4 X 0 7
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals only) ?
No
2 . Special monitoring or limitations (including toxicity)
requests:
3 . Important SOC, JOC or Compliance Schedule dates: (Please
indicate)
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4 . Alternative Analysis Evaluation: Has the facility evaluated
all of the non-discharge options available. Please provide
regional perspective for each option evaluated.
Spray Irrigation:
Connection to Regional Sewer System:
Subsurface:
Other disposal options:
5. Other Special Items:
NPDES Permit Staff Report
Version 10/92
Page 3

•
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
The system was operating well at the time of the
inspection. No odor was detectable and no solids were in the
creek. WSRO recommends the permit be reissued.
►.
Signature of report pre arer
a t er Quality gional Supervisor
Dat4
NPDES Permit Staff Report
Version 10/92
Page 4

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A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final NPDES No. NC0030937
During the period beginning on the effective date of the Permit and lasting until expiration, the
Permittee is authorized to discharge from outfall(s) serial number(s) 001. Such discharges shall be
limited and monitored by the Permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Lbs/day Other Units (Specify) Measurement Sample *Smile
Monthly Avg. Weekly Avg. Monthly Avg. Weekly Avg. Frequency Type Location
Flow 450 GPD
BOD, 5Day, 20°C 30. 0 mg/1 45. 0 mg/1
Total Suspended Residue 30. 0 mg/1 45.0 mg/1
NH3 as N
Fecal Coliform (geometric mean) 1000. 0/100 ml 2000.0/100 ml
The chlorinator shall be inspected weekly to ensure there is an ample supply of chlorine tablets for
continuous disinfection of the effluent.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.