NCG550431_staff report_19930902

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CC: Permits and Engineering
Technical Support Branch
County Health Dept.
Central Files"'°'°°a '"° ��3;.•
WSRO
SOC PRIORITY PROJECT: No x
To: Permits and Engineering Unit
Water Quality Section
Attention: Mack Wiggins
Date: September 2, 1993
NPDES STAFF REPORT AND RECOMMENDATIOI O 3 _ O -1_ O 4
County Forsyth
Permit No.
PART I - GENERAL INFORMATION ' " cGa) 0'31
1. Facility and Address: Mr. Barry Knight Residence
1731 Cone Road
Winston-Salem, NC 27127
2. Date of Investigation: August 31, 1993
3. Report Prepared by: Mike Mickey
Environmental Specialist II
4. Persons Contacted and Telephone Number:
Mr. Barry Knight, ph [phone]
5. Directions to Site: Take Highway 150 south of Winston-
Salem. Exit onto Clemmonsville Road and proceed right to
Old Salisbury Road. Turn left and Cone Road is 1.4 miles on
the right. The residence is at the end of the road on the
right.
6. Discharge Points(s), List for all discharge points:
Latitude: 360 01' 1311 Longitude: 800 16' 3611
U.S.G.S. Quad No. C-17-SE U.S.G.S. Quad Name Winston-Salem
West
7. Site size and expansion area consistent with application ?
X Yes No If No, explain:
8. Topography (relationship to flood plain included): The
house and system are located adjacent to the stream. The
chlorinator tubes are 25 feet from the creek.
9. Location of nearest dwelling: Other dwellings are located to
the east of Cone Road
ice,

10. Receiving stream or affected surface waters: U.T. to South
Fork Muddy Creek
a. Classification C
b. River Basin and Subbasin No.: YAD-04
C. Describe receiving stream features and pertinent
downstream uses: The system discharges into the
headwaters of the U.T. behind the house. A large pond
is located 3/4 mile downstream. The stream flows into
a cow pasture just'50 feet below the system.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 450 MGD (Ultimate
Design Capacity)
b. Current permitted capacity of the WWTP? 450 gpd.
2.
M
W
C. Actual treatment capacity of the current facility
(current design capacity)? The sandfilter is only 90
sq. ft., but is preceded by a ground absorption system.
d. Date(s) and construction activities allowed by previous
A/C's issued in the previous two years. NA
e. Please provide a description of existing wastewater
treatment facilities; The existing facility consists
of the following: a 900 gallon septic tank, an 80 foot
long nitrification line, 90 sq. ft. subsurface
sandfilter, tablet chlorinator w/contact tank and
discharge pipe.
f. Please provide a description of proposed wastewater
treatment facilities. NA
g. Possible toxic impacts to surface waters: NA
h. Pretreatment Program (POTWs only): NA
Residuals handling and utilization/disposal scheme:
a. Other disposal/utilization scheme (Specify): Septage
pumper for disposal in the nearest POTW.
Treatment plant classification (See attached rating sheet).
NA for SFR.
SIC Code(s): 4952 Primary 04
Main Treatment Unit Code: 4 4 0 X 7
NPDES Permit Staff Report
Version 10/92
Page 2

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PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved? No
2. Special monitoring or limitations (including toxicity)? NA.
3. Important SOC, JOC or Compliance Schedule dates: NA.
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated. NA for
existing SER.
5. Other Special Items:
IV - EVALUATION AND RECOMMENDATIONS
An inspection of the system on September 1, 1993, did not
reveal any problems. The end of the effluent pipe could not be
located _ec`dWo excessive plant growth. Observations of the U.T.
revealed clear water with no solids present.
WSRO recommends reissuance.
Signature of report pre` rer
lol, Water Quality Regional Supervisor
9, - 3 - i,3
Date
NPDES Permit Staff Report
Version 10/92
Page 3

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NCO068829
During the period beginning on the effective date of the permit and 1<<sting 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
Flow
BOD, 5 day, 200C
Total Suspended Residue
NH3 as N
Dissolved Oxygen"
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Discharge
Limitations
Units
(specify)
Monthlyv
Weekly Avg,
450 GPD
15.0 mg/I
22.5 mg/I
30.0 mg/1
45.0 mg/I
4.0 mg/I
6.0 mg/1
200.0 /100 ml 400.0 /100 ml
Monitoring Re ulrements
MeasurementSample 'Sam . Its
Frequency Type Location
** 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.

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--RiEDBURG 2.3 Mi. 17'30" 164
Mr. Barry S. Knight Residence •4.
399
NPDES Permit No. NCO068829
Discharges into a U.T. to South
Fork Muddy Creek, Class
Located at 1731 Cone Road south
of Winston-Salem, N.C.
Forsyth County C-17-SE 39k
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Discharge Point �r t(� G.
565 0 INTERIOR -GEOLOGICAL SURVEY, RESTON, VIRGINIA-1987670wm-L
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