NC0084093_Staff Report_19940419

NPDES DOCUMENT SCANNING COVER SHEET
NC0084093
Jordan Lake WTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File
- Historical
Engineering Alternatives (EAA)
Staff Report
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
April 19, 1994
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SOC PRIORITY PROJECT: Yes NoX
If Yes, SOC No.
To: Permits and Engineering Uni
Water Quality Section
Attention: (Susan A. Wilson)
Date April 19, 1994
NPDES STAFF REPORT AND RECOMMENDATION
County Chatham
Permit No. NC008409311
PART I - GENERAL INFORMATION
1. Facility and Address:
Jordan Lake Water Treatment Plant
Chatham County
PO Box 87
Pittsboro NC 27312
2. Date of Investigation: April 18, 1994
03-00-aS
3. Report Prepared by: Shane McCarthy
4. Persons Contacted and Telephone Number: Robert Russell
910-292-2271
5. Directions to Site: 64 west towards Pittsboro. Water
Treatment Plan will be on left just after the Wilsonville store
and just before Jordan Lake.
6. Discharge Point(s), List for all discharge points:
Latitude: 36° 44' 10" Longitude: 79° 01' 05"
Attach a USGS map extract and indicate treatment facility
site and discharge point on map.
U.S.G.S. Quad No. E22NE U.S.G.S. Quad Name Merry Oaks
7. Site size and expansion area consistent with application ?
XX Yes No If No, explain:
8. Topography (relationship to flood plain included):Sludge
Lagoon will be built in between two creeks. Soil from the ridge
that separates the creek will be used to form the back of the
lagoon.
9. Location of nearest dwelling: > 100 yards
10. Receiving stream or affected surface waters: New Hope
River, South of route 64(Jordan Lake).
?LOTTED

a. Classification: WS-III & B, NSW, CA
b. River Basin and Subbasin No.:03-06-05
c. Describe receiving stream features and pertinent
downstream uses:The discharge pipe will be located
in Jordan Lake, below the intake for the water treatment plant.
The current plans show that this pipe will be "subaqueous" and
should not interfere with any recreational activities.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: ???? This volume
should be investigated further. At a water treatment volume of 3 MGD
the consultant estimated discharging 150,000 qpd.
b. What is the current permitted capacity of the Waste
Water Treatment facility? NA
c. Actual treatment capacity of the current facility
(current design capacity)? The lagoon will be designed to
hold 20 years worth of sludge @ 1.5 MGD.
d. Date(s) and construction activities allowed by previous
Authorization to Construct issued in the previous two years:
NA
e. Please provide a description of existing or
substantially constructed wastewater treatment facilities:NA
f. Please provide a description of proposed wastewater
treatment facilities: A sludge storage lagoon that will hold
clarifier sludge and filter backwash water.
g•
Possible toxic impacts to surface waters: Possible
impacts from alum sludge, chlorine and aluminum.
h. Pretreatment Program (POTWs only):NA
in developmentapproved
should be required not needed
2. Residuals handling and utilization/disposal scheme:No
definitive method/contractor has been finalized at this time
since the holding capacity of the lagoon is estimated to be 20
years.
a. If residuals are being land applied, please specify DEM
permit no.
Residual Contractor
Telephone No.
b. Residuals stabilization: PSRP
PFRP Other
c. Landfill:
d. Other disposal/utilization scheme (Specify):

3. Treatment plant classification (attach completed rating
sheet):
4. SIC Code(s): 4941
Wastewater Code(s) of actual wastewater, not particular
facilities i.e.., non -contact cooling water discharge from a
metal plating company would be 14, not 56.
Primary 21 Secondary
Main Treatment Unit Code: 50
PART III -
1. Is this
Funds or are
OTHER PERTINENT INFORMATION
facility being constructed with Construction Grant
any public monies involved. (municipals only)?NA
2. Special monitoring or limitations (including toxicity)
requests:NONE
3. Important SOC, JOC or Compliance Schedule dates: (Please
indicate) NA
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:This method is a possibility
and
dland land
is
and
available. Costs associated with purchasing
constructing a spray system should be evaluated.
Connection to Regional Sewer System: NA
Date
Subsurface: NA
Other disposal options: Possibly recycle the water back
through the treatment system. Public water supply rules would
have to be examined as to the possibility of this occurring.
5. Other Special Items: NA

PART IV - EVALUATION AND RECOMMENDATIONS
The subject NPDES application has been reviewed and a site
visit performed. The facility will be constructed near Jordan
Lake with the discharge from the lagoon pumped to an area
downstream from the intake for the plant. An EA has been
completed and the Corps of Engineers has issued a nationwide
permit pursuant to Section 404 of the Clean Water Act, to impact
up to 10 acres.
The plans for the project show the discharge going to the
Lake below the intake. It is possible that a spray application
system could be designed and implemented in this case. There
appears to be enough land available for this option. Further
investigation into this option should be made and the associated
costsnnestimated . (S4 1cA- $v�s
5Ju.t .c> v` od , , ta, - d ga- L�• f)
Upon receiving notification that the proposed discharge will
be to Jordan Lake and at the present location, the RRO recommends
issuing the subject facility a NPDES Permit.
Sig ature of repor - -=- er
W al Supervisor
a er Quality R on
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