NC0079821_Staff Report_19930120

cc:
Permits and Engineering
/Technical Support Branch
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: (Susan Robson)
Date: January 20, 1993
NPDES STAFF REPORT AND RECOMMENDATION
County Forsyth
Permit No. NCO079821
03 -0'1 - 04
S R l,t �Ieee u—
PART I - GENERAL INFORMATION
1. Facility and Address: R. A. Thomas Water Filtration Plant
1201 Martin Luther King, Jr. Drive
Winston-Salem, NC
2. Date of Investigation: January 15, 1993
3. Report Prepared by: Lee G. Spencer
4. Persons Contacted and Telephone Number:
Ron Hargrove & Ed Davis
727-8418 784-7597
5. Directions to Site: From WSRO, take US 52 South to Stadium
Dr. exit. Turn left at light and go to MLKJr Dr. Turn
right onto MLKJr Dr. and proceed to Water Filtration Plant
on your left just beyond intersection with Reynolds Park Rd.
6. Discharge Points(s), List for all discharge points:
Latitude: 36004'15" Longitude: 80°13'00"
U.S.G.S. Quad No. C18-SW U.S.G.S. Quad Name W-S East
7. Site size and expansion area consistent with application 7
X Yes No If No, explain:
8. Topography (relationship to flood plain included): Gently
rolling terrain. Lagoons not subject to flooding.
9. Location of nearest dwelling: `2000' ;t vq 3- "I

10. Receiving stream or affected surface waters: Salem Creek
a. Classification: C
b. River Basin and Subbasin No.: 03-07-04
C. Describe receiving stream features and pertinent
downstream uses: Stream flows through very urban areas
on its way toward Yadkin River.
Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: N/A (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Waste
Water Treatment facility? No flow limit
C. Actual treatment capacity of the current facility
(current design capacity)? N/A (Water Trmt. Plant
capacity is 27 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: Filter backwash water and clarifier
underdrains are pumped to either of two 1.8 MG lagoons
which are in parallel. Influent enters on one side of
each lagoon and exits on the other side via surface
skimmers. Effluent is then pumped to drainage canal
which flows into Salem Creek.
f. Please provide a description of proposed wastewater
treatment facilities. N/A
g. Possible toxic impacts to surface waters: Only
possibility would be chlorine residual impact, which
should be minimal.
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
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Residuals Contractor
Telephone No.
b. Residuals stabilization: PSRP PFRP
Other
co Landfill:
d. Other disposal/utilization scheme (Specify): Each
lagoon is drained and cleaned approximately one time
per year. Heavy equipment is used to remove "alum
type" sludge off the bottom and it is spread onto a
large, level field which is immediately adjacent to the
lagoons.
3. Treatment plant classification (attach completed rating
sheet): Class I
4. SIC Code(s): 4941
Primary 21 Secondary
Main Treatment Unit Code: 3 0 0 _ 3
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)
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: Impractical
Connection to Regional Sewer System: Impractical
Subsurface: N/A
NPDES Permit Staff Report
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Other disposal options:
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
This office has no objection to the issuance of this permit.
The facility appears well operated and maintained.
t
ignature of report preparer
,.1- J
Water Quality Region'l Supervisor
NPDES Permit Staff Report
Version 10/92
/-Z-a- "F3
Date
Date
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