NC0086665_Permits and Engineering Unit_20031001

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OCT - 1 2003
cc: Permits and Engineering
Technical Support Branch
County Health Dept.
Central Files
WSRO
SOC PRIORITY PROJECT: Yes NoX
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Mark McIntire
Date: April 26, 1999
NPDES STAFF REPORT AND RECOMMENDATION
County Rockingham
Permit No. NC0086665
PART I - GENERAL INFORMATION
1. Facility and Address: Rockingham County LC Combustion Turbine Facility (Dynegy)
Applicant Address: 1000 Louisiana, Suite 5800
Houston Texas 77002-5050
Facility Location: 240 Ernest Drive
Reidsville N.C. 27320
2. Date of Investigation: 99/04/19 (via telephone to Starla Lacy)
3. Report Prepared by: David Russell, WSRO
4. Persons Contacted and Telephone Number: Starla Lacy(713) 767-8961
5. Directions to Site: From Hwy 220 in Rockingham County travel Hwy 65 NE
approximately 8 'A miles. Site is on the left on Ernest Drive.
6. Discharge Points(s), List for all discharge points:
001: Latitude: 36° 19' 42" Longitude: 79°49'45"
002: Latitude: 36° 19'41" Longitude: 79° 49'46"
U.S.G.S. Quad No. B19SE U.S.G.S. Quad Name Bethany
7. Site size and expansion area consistent with application? X Yes No If No, explain:
'U 1►

8. Topography (relationship to flood plain included): Well above the flood plain.
9. Location of nearest dwelling: None within 1000 feet.
10. Receiving stream or affected surface waters: UT to Jacob's Creek
a. Classification C
b. River Basin and Subbasin No.: Roanoke
c. Describe receiving stream features and pertinent downstream uses: Rural area;
woodland; fish and wildlife propagation.
Part H - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permitted: MGD (Ultimate Design Capacity)
20,640 gpd average; 163,200 gpd maximum (combination of cooling water and
stormwater)
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)?
163,200 gpd max.
d. Date(s) and construction activities allowed by previous Authorizations 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.
Contact stormwater- oil/water separator, polishing filter; 002 non-contact cooling
water- discharged untreated to the U.T. (two discharge points)
g. Possible toxic impacts to surface waters: None known
h. Pretreatment Program (POTWs only):
in development_ approved
should be required _ not needed
2. Residuals handling and utilization/disposal scheme: NA
a. If residuals are being land applied, please specify DWQ Permit No.
NPDES Permit Staff Report
Version 10/92'
Page 2

Residuals 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). Class I
4. SIC Code(s):
Primary L4 Secondary 73
Main Treatment Unit Code: 5 3 6 = 0
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved. (municipals only)? NA
2. Special monitoring or limitations (including toxicity) requests: NA
3. Important SOC, JOC or Compliance Schedule dates: (Please indicate)NA
Pate
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. This is a
non-BOD laden wastewater. The flow will be stormwater and cooling water. Surface
•
Spray Irrigation:
Connection to Regional Sewer System: None available.
NPDES Permit Staff Report
Version 10/92
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Subsurface:
Other disposal options:
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
This proposed facility would generate electricity during peak load demands. Turbines
fueled by natural gas or fuel oil would be used. Cooling water(non-contact) would be generated
by the turbines, as well as stormwater from the area. Contaminated stormwater (001) would go
through an oil/grease separator and filter before being discharged into an UT to Jacob's Creek.
Cooling water and noncontaminated stormwater p002)wouldMlow into the UT to Jacob's Creek.
These are non D.O. demanding wastewater. There would be two discharge points, 001 and 002.
There are some points of concern that were not addressed in the application package.
They are as follows: (1) Temperature - what will be the effluent temperature? What, if any,
change in receiving stream temperature would occur? (2) Wetlands - would 401/404 permits be
required? (3) Cost estimates -.no cost estimate was given for the discharge alternative to
compare with the non-discharge alternatives.
These items need to be addressed before WSRO recommends issuance of the permit.
Acatj Q // d 5/D—
Signature of report preparer
n .
Water Quhlity Regional Supervisor
— 2 -? - 9
Date
NPDES Permit Staff Report
Version 10/92
Page 4

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