NCG550254_Staff Report_19930902

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County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: No x f;
I 03-01 -04
To: Permits and Engineering Unit
Water Quality Section
UCC ,,rD1-1a5 — Attention: Mack Wiggins
Date: September 2, 1993
NPDES STAFF REPORT AND RECOMMENDATION
County Forsyth
Permit No. NC0057983 v.Q,n3
PART I - GENERAL INFORMATION FeNc `
1. Facility and Address: Mr. Robert S. Conklin \`�
(formerly D.R. Crim Residence) v. ,
6070 Woodcove Drive ‘7
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Winston-Salem, NC 27104 ��
2 . Date of Investigation: September 1, 1993 \44a)&L<-�`�
3 . Report Prepared by: Mike Mickey \4:*-�
Environmental Specialist II
4 . Persons Contacted and Telephone Number:
Kelly Conklin, (919) 766-1736 (H) & (919) 884-6009 (W)
5. Directions to Site: Take Highway 421 west out of Winston-
Salem. Take the Lewisville-Clemmons exit and then turn
right on Styers Ferry Road. Woodcove Road is 1. 0 miles on
the left. The house is at the end of the road on the left.
6. Discharge Points (s) , List for all discharge points:
Latitude: 36° 05' 20" Longitude: 80° 22 ' 56"
U.S.G.S. Quad No. C-17-SW U.S.G.S. Quad Name Clemmons
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 small stream.
9 . Location of nearest dwelling: Other dwellings are located to
the east along Woodcove Road.

10. Receiving stream or affected surface waters • �i%w: a-o
�Re rno:l —Creek`s .
a. Classification: C
b. River Basin and Subbasin No. : ' 04
c. Describe receiving stream features and pertinent
downstream uses: The zero flow stream flows into a cow
pasture just below the residence.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: 360 GPD (Ultimate
Design Capacity)
b. Current permitted capacity of the WWTP? 450 GPD.
c. Actual treatment capacity of the current facility
(current design capacity) ? 270 sq. ft. sandfilter x
1. 15 gpd/ft2 = 310 gpd.
d. Date (s) and construction activities allowed by previous
A/C's issued in the previous two years. A/C issued
3/7/84 for new contact tank and chlorinator. The rest
of the system was installed in 1974 by the Health Dept.
e. Please provide a description of existing wastewater
treatment facilities; The existing facility consists
of the following: a 900 gallon septic tank, a
nitrification trench (64 ft x 3 ft) , a 270 sq. ft.
subsurface sandfilter, tablet chlorinator, contact tank
and effluent 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
2 . Residuals handling and utilization/disposal scheme:
a. Other disposal/utilization scheme (Specify) : Septage
pumper for disposal in the nearest POTW.
3 . Treatment plant classification (See attached rating sheet) .
NA for SFR.
4. SIC Code (s) : 4952 Primary 04
Main Treatment Unit Code: 4 4 0 X 7
NPDES Permit Staff Report
Version 10/92
Page 2

PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved? NA
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 SIFR System.
5 . Other Special Items:
IV - EVALUATION AND RECOMMENDATIONS
Observations of the effluent pipe outlet on September 1,
1993 , revealed that it was dry with no recent flow. Apparently
the wastewater is being absorbed into the ground through the
nitrification lines preceding the sandfilter. It is relevant to
note that the chlorinator tubes could not be located as they were
'probably covered with ivy.
WSRO recommends reissuance.
Signature of report prepay
-//521.414L
(o;LWater Quality Regional Supervisor
q - 3 - 93
Date
NPDES Permit Staff Report
Version 10/92
Page 3

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A. (). EFFLUENTtLIMITATIONS AND MONITORING REQUIREMENTS Final NPDES No. NC0057983
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 numbei(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 *Sample
Monthly Avg. Weekly Avg. Mouth4.v Avg Weekly Avg. Fregnen y Type Location
Flow • 50 GPD
BOD, 5Day, 20 Degrees C 30.0 mg/1 45. 0 mg/1
Total Suspended Residue 30.0 mg/1 45. 0 mg/1
NH3 as N
Dissolved Oxygen (minimum) 6>0 mg/1 6.0 mg/1
Fecal Coliform (geometric mean) 1000.0/100 ml 2000. 0/100 ml
Total Residual Chlorine
Temperature
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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