NCG550078_Staff Report_19930218

1
1
+ cc: Permits and Engineering
Technical Support Branch
County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: Yes No X
If Yes, SOC No.
P 1
°' � To: Permits and Engineering Unit
- o Water Quality Section
Attention: (Mack Wiggins)
�Q®� + Date: February 16, 1993
G NPDES STAFF REPORT AND RECOMMENDATION
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County Forsyth
;t, Permit No. NC0039403
PART I - GENERAL INFORMATION
1 . Facility and Address : Stephen L. Estep Residence
5940 El Camino Drive
Pfafftown, NC 27040
2 . Date of Investigation: February 9, 1993
3 . Report Prepared by: Lee G. Spencer
4 . Persons Contacted and Telephone Number: No one home
5 . Directions to Site: From intersection of Old Yadkinville
Hwy. and Kecoughtan Drive proceed northwest on Kecoughtan
Drive to El Camino Drive on the right. The residence is on
the right next to small stream.
6 . Discharge Points(s) , List for all discharge points :
Latitude: 36°09 ' 05" Longitude: 80°23 ' 05"
U. S .G.S. Quad No. C-17NW U.S .G.S . Quad Name Vienna
7 . Site size and expansion area consistent with application ?
x Yes No If No, explain:
8 . Topography (relationship to flood plain included) : Site
slopes toward creek at -3% . Is not flood prone.
9 . Location of nearest dwelling: -300 '
10 . Receiving stream or affected surface waters : UT of Bill
Branch
a . Classification: C
b. River Basin and Subbasin No. : 03-07-04
c. Describe receiving stream features and per ' n

downstream uses : Stream flows through rural residential
area.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
i. a. Volume of Wastewater to be permitted: 0 . 0005 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the Waste
Water Treatment facility? 0 . 0005 MGD
c. Actual treatment capacity of the current facility
(current design capacity) ? 0 . 0005 MGD
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 : It is said previously to be: a 900 gal .
septic tank; a 270 sq. ft. subsurface sand filter;
chlorination; and chlorine contact chamber.
f. Please provide a description of proposed wastewater
treatment facilities : None
g. Possible toxic impacts to surface waters : None
h. Pretreatment Program (POTWs only) :
2 . Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit No.
Residuals Contractor
Telephone No.
b. Residuals stabilization: PSRP PFRP
Other
c. Landfill :
d. Other disposal/utilization scheme (Specify) : When
necessary, sludge will be pumped from the septic tank
by a licensed pumping contractor and taken to the
nearest WWTP for disposal .
3 . Treatment plant classification (attach completed rating
NPDES Permit Staff Report
Version 10/92
Page 2

sheet) : Not applicable - SFR
4 . SIC Code(s) : 4952
Primary 04 Secondary
Main Treatment Unit Code: 4 4 0 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) ?
2 . Special monitoring or limitations (including toxicity)
requests : None
3. Important SOC, JOC or Compliance Schedule dates : (Please
indicate) : None
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: Not enough area or buffer.
Connection to Regional Sewer System: Not available.
Subsurface: Inadequate soil types .
Other disposal options :
5 . Other Special Items :
PART IV - EVALUATION AND RECOMMENDATIONS
This office does not object to the reissuance of this
Permit.
� u
Signature of report preparer Date
Water Quality Regions Supervisor Date
NPDES Permit Staff Report
Version 10/92
Page 3

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ROAD CLASSIFICATION
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Secondary highway,all weather, Light-duty road, all weathe
5000 7000 FEET hard surface improved surface
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I KILOMETER Unimproved road, fair or dry
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_ __ _-
A. ( ). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0039403
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 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Units (speclfyl Measurement Sample 'Samle
Monthly Avg. Weekly Avg. Freavency Tvpe Location
Flow 500 C-PD
BOD, 5 day, 20°C 30.0 mg/I 45.0 mg/I
Total Suspended Residue 30.0 mg/I 45.0 mg/I
NH3 as N
Dissolved Oxygen**
Fecal Coliform (geometric mean) 200.0 /100 ml 400.0 /100 ml
Total Residual Chlorine
Temperature
** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
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.