NC0024911_technical correction_20061012

OF WATER Michael F. Easley,Governor
State of North Carolina
0 QG William G. Ross,Jr.,Secretary
c Department of Environment and Natural Resources
� Y
Alan W. Klimek,P.E.,Director
Division of Water Quality
October 12,2006
Mr.Tom Hartye
MSD of Buncombe County
2028 Riverside Drive
Asheville,North Carolina 28804
Subject:NPDES Permit Correction
Permit#NCO024911
French Broad River WRF
Buncombe County
Dear Mr. Hartye:
The following errors were brought to the Division's attention after the issuance of your final
NPDES permit. Please make note of the changes. The enclosed pages supercede the corresponding pages
in your final permit. Please discard the old pages.
➢ 40 CFR Part 133.103 requires that the French Broad River WRF be subject to an 85%removal
requirement for BOD and TSS. This requirement was discussed amongst John Kivenimi of
MSD,Marshall Hyatt from EPA,Region IV,and Toya Fields with DWQ in March 2006. The
requirement,however,was mistakenly omitted from the final version of the permit.
➢ For the sake of clarity,all metals have been expressed as"total".
If any parts,measurement frequencies or sampling requirements contained in this permit are
unacceptable to you,you have the right to an adjudicatory hearing upon written request within thirty
(30)days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes,and filed with the Office of
Administrative Hearings(6714 Mail Service Center,Raleigh,North Carolina 27699-6714). Unless such
demand is made,this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect the
legal requirements to obtain other permits which may be required by the Division of Water Quality or
permits required by the Division of Land Resources,the Coastal Area Management Act or any other
Federal or Local governmental permit that may be required.
If you have any questions concerning this permit,please contact Toya Fields at telephone
number(919)733-5083,extension 551.
Sincerely,
A an W.Klimek,P.E.
cc: Central Files
Asheville Regional Office/Surface Water Protection
NPDES Unit
PERCS Unit
Aquatic Toxicology
Marshall Hyatt,EPA Region IV
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 Telephone[phone] FAX[phone] NO
orehCarolina
512 N.Salisbury Street,Raleigh,North Carolina 27604 On the Internet at http://h2o.enr.state.nc.us/ gturq��tf
An Equal Opportunity/Affirmative Action Employer

Permit NCO024911
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Weekly Daily Measurement Sample Sample
Average. Averse Maximum Frequency T e Location
Flow 40 MGD Continuous Recording I or E
CBOD,5-day(201C)2 25.0 mg/L 40.0 mg/L Daily Composite I&E
Total Suspended Solids2 30.0 mg/L 45.0 mg/L Daily Composite I&E
NH3 as N Daily Composite E
Dissolved Oxygen3 Daily Grab E,U&D
Fecal Coliform 200/100 ml 400/100 ml Daily Grab E,U&D
(geometric mean)
Total Residual Chlorines 28 pg/L Daily Grab E
Temperature(°C) Daily Grab E,U&D
Total Nitrogen Quarterly Composite E
(NO2+NO3+TKN)
Total Phosphorus Quarterly Composite E
Conductivity Daily Grab E,U&D
Cyanide4 22 pg/L Weekly Grab E
Total Copper 2/Month Composite E
Total Zinc 2/Month Composite E
Total Silver 2/Month Composite E
pH Between 6.0 and 9.0 s.u. Daily Grab E
Chronic Toxicity6 Quarterly Composite E
Annual Pollutant Scan Annual Grab E
Footnotes:
I. I=Influent,E=Effluent,U=Upstream at dam discharge to fish ladder adjacent to intake flume to the
hydroelectric plant (Location is approximately 2700 feet upstream of the hydroelectric plant). D=Downstream
at Ledges Park. Upstream and downstream samples shall be grab samples. Stream samples shall be collected
three times per week during June,July,August and September then once per week in the remaining months of
the year.
2. The monthly average effluent CBOD5 and Total Suspended Solids concentrations shall not exceed 15%of the
respective influent value (85%removal).
3. The daily average dissolved oxygen effluent concentration shall not be less than S.Omg/L.
4. See special condition A(3).
5. TRC limit takes effect May 1,2008. Limit and monitoring requirement only apply if chlorine is used for
disinfection.
6. Whole effluent toxicity will be monitored using the Pass/Fail Chronic Toxicity test with Ceriodaphnia at 12%.
Samples shall be taken in February,May,August&November;see A. (2.).
7. See special condition A(7).
There shall be no discharge of floating solids or visible foam in other than trace amounts