NC0025534_Permit (Issuance)_20001230

NPDES DOCUMENT SCANNING COVER SHEET
AMIN
AMIN
NPDES Permit:
NC0025534
Hendersonville WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
December 30, 2000
This document is printed on reuse paper - ignore any
content on the reverse side

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
December 30, 2000
Mr. Ezra Allman, Director
City of Hendersonville Water and Sewer Utilities
P.O. Box 1760
Hendersonville, North Carolina 28793
Dear Mr. Allman:
AtWA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject:Issuance of NPDES Permit NC0025534
Hendersonville Wastewater Treatment Plant
Henderson County
Division of Water Quality (Division) personnel have reviewed and approved your application for renewal
of the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is
issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S. Environmental Protection Agency dated May 9, 1994 (or as
subsequently amended).
After a review of the draft permit, the following change has been made to your final permit:
• The months during which effluent toxicity monitoring should be conducted have been changed to
reflect your facility's current schedule. You will therefore be required to monitor for toxicity in
February, May, August and November.
• The monitoring requirements under sections A. (1.), A. (2.), A. (3.) have been changed such that
cyanide and pH are shall now be taken as grab samples.
• A footnote has been added to the Total Residual Chlorine (TRC) condition in sections A. (2.) and A.
(3.). specifying that the limit and monitoring requirements only apply if chlorination is used as a final
disinfectant. When construction on the expanded facility is complete, you may submit a modification
request to have the Total Residual Chlorine condition removed from the permit.
• The weekly average limit for cadmium has been removed from the effluent limits page since it exceeds
the daily maximum allowable effluent concentration. Your facility will now only be required to meet
the daily maximum limit.
• The supplement to the cover sheet has been changed to reflect your description of the process train in
the treatment plant.
• The map has been changed as per correspondence from Willis Engineers dated November 29, 2000.
As regards the use of instream waste concentration (IWC) to determine chronic toxicity limits and
reasonable potential, it was found that the new discharge point (that being used for the expanded discharge) affords
greater dilution than the existing discharge point. The dilution factor for these calculations is provided by the
7Q10 — the lowest seven-day stream flow for a given receiving stream over a period of 10 years. For the 3.2-MGD
discharge, a 7Q10 of 17.4-cfs resulting in an IWC of 22% was used. For the 4.8 and 6 MGD discharges, a 7Q10 of
34.9 cfs was used; this resulted in a 17.6% and 21.4% IWC, respectively.
As explained in the cover letter to the draft permit, lead and selenium were added due to a risk assessment
(reasonable potential analysis) that projected effluent levels of lead and selenium that would cause a violation of the
stream standard for lead and selenium. In performing a reasonable potential analysis, historical data from the
Discharge Monitoring Retorts (DMRs) is tabulated and a statistical analysis of the data performed. This analysis
projects the maximum of luent concentration of a given pollutant of concern based upon the historical record,
typically encompassing the past three years of DMRs. This maximum concentration is then compared against the
allowable effluent concentration (determined using the state standard and the IWC). If it exceeds the allowable
concentration, a permit limit is given, as was the case with lead and selenium in your facility's permit.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer VISIT us ON THE INTERNET @ http:Nh2o.enr.state.nc.us/NPDES

If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable
to you, you have the right to an ad)udicatory 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 Natalie Sierra at telephone number (919)
733-5083, extension 551.
Sincerely,
Original Signed By
David A, Goodrich
Kerr T. Stevens
cc: Central Files
Asheville Regional Office/Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
EPA Region IV, Roosevelt Childress
Aquatic Toxicology Unit

Permit NC0025534
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations
promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution
Control Act, as amended, the
City of Hendersonville
is hereby authorized to discharge wastewater from a facility located at the
Hendersonville WWTP
U.S. Highway 25
near Balfour
Henderson County
to receiving waters designated as Mud Creek in the French Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III and IV hereof.
This permit shall become effective February 1, 2001.
This permit and authorization to discharge shall expire at midnight on December 31, 2005.
Signed this day December 30, 2000.
Original Signed By
David A. Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0025534
SUPPLEMENT TO PERMIT COVER SHEET
City of Hendersonville is hereby authorized to:
1. Continue to operate an existing 3.2 MGD wastewater treatment system with the
following components:
• Coarse screens
• Fine screens
• Grit chamber
• Primary clarification
• Trickling filters
• Activated sludge basins
• Secondary clarification
• Chlorination
• Anaerobic sludge digestion
• Sludge dewatering
The facility is located at the Hendersonville Wastewater Treatment Plant, U.S.
Highway 25, near Balfour, Henderson County, and
2. Upon completion of construction (in accordance with the facility's Authorization
to Construct), operate the expanded treatment facility at flows of 4.8 MGD (Phase
I construction) and 6.0 MGD (Phase II construction), and
3. Discharge from said treatment works at the locations specified on the attached
map into Mud Creek, classified C waters in the French Broad River Basin.

jTh
.,r
4. ..��.
v'
3.2 MGD outfall
kd'al
Cat,
NC00025534 - City of Hendersonville
Latitude (32 MGD discharge): 35°20'59" Latitude (4.8 and 6 MGD discharge): 35°21'11"
Longitude (32 MGD discharge): 82°27'S0" Longitude (4.8 and 6 MGD discharge): 82°27'52'
Quad 11: F9SW/Hendersonville Sub -Basin: 04-03-02
Stream Class: C
Receiving Stream: Mud Creek
Permitted Flow: Phased as 3.2, 4.8 and 6.0 MGD
i, •
wage
SDOS
`b t
-41ountdihVi..e 44
i •( " ! r'Gi"
•
•
Facility
Location
City of Hendersonville
NC0025534
City of Hendersonville W WTP

Permit NC0025534
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning on the effective date of this permit and lasting until
expansion above 3.2 MGD, the Permittee is authorized to discharge from outfall 001.
Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly '
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location1
Flow
3.2 MGD
Continuous
Recording
I or E
BOD, 5-day (20°C)2
30.0 mg/L
45.0 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 0xygen3
Daily
Grab
E, U, D
Fecal Coliform (geometric mean)
200/100 ml
400/100 ml
Daily
Grab
E, U, D
Total Residual Chlorine
Daily
Grab
E
Temperature (°C)
Daily
Grab
E, U, D
Total Nitrogen
(NO2+NO3+TKN)
Quarterly
Composite
E
Total Phosphorus •
Quarterly
Composite
E
Chronic Toxicity's
Quarterly
Composite
E
pHs
. Daily
Grab
E
Cadmium
9 µg/L
Weekly
Composite
E
Cyanide
22 µg/L
22.5 µgIL
Weekly
Grab
E
Mercury
0.05 µg/L
Weekly
Composite
E
Copper
2/Month
Composite
E
Zinc
2/Month
Composite
E
Silver
2/Month
Composite
E
Selenium
20 µg/L
22.5 µgIL
Weekly
Composite
E
Lead
34 µgIL
113 µgIL
Weekly
Composite
E
Footnotes:
1. E: Effluent, I: Influent, U: Upstream in Mud Creek above outfall; D: Downstream at NCSR 1365.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected
three times per week during June, July, August and September and once per week during the
remaining months of the year.
2. The monthly average effluent BODS and Total Suspended Residue 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 5.0 mg/L.
4. Whole effluent toxicity will be monitored using the Pass/Fail Chronic Toxicity test with
Ceriodaphnia at 22%. See A.(4.).
5. 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

Permit NC0025534
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning upon expansion above 3.2 MGD and lasting until
expansion above 4.8 MGD, the Permittee is authorized to discharge from outfall 001.
Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT ,,A —.. }' per ; '
CHARACTERISTICS
= ' •
LIMITS ."
'` - ^ MONITORING REQUIREMENTS
" . Monthly .
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Location1
Flow
4.8 MGD
Continuous
Recording
I or E
BOD, 5-day (20°C)2
(April 1— October 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I & E
BOD, 5-day (20°C)2
(November 1— March 31)
20.0 mg/L
30.0 mg/L
Daily
Composite
I & E
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
I & E
NH3 as N
(April 1— October 31)
2.0 mg/L
Daily
Composite
E
NH3 as N
(November 1— March 31)
4.0 mg/L
Daily
Composite
E
Dissolved Oxygen3
Daily
Grab
E, U, D
Fecal Coliform (geometric mean)
200/100 ml
400/100 ml
Daily
Grab
E, U, D
Total Residual Chlorine*
28 µg/L
Daily
Grab
E
Temperature (°C)
Daily
Grab
E, U, D
Total Nitrogen
(NO2+NO3+TKN)
Quarterly
Composite
E
Total Phosphorus
Quarterly
Composite
E
Chronic Toxicity5
Quarterly
Composite
E
pH6
Daily
Grab
E
Cadmium
11 µg/L
Weekly
Composite
E
Cyanide
22 µg/L
28 µg/L
Weekly
Grab
E
Mercury
0.07 µg/L
Weekly
Composite
E
Copper
2/Month
Composite
E
Zinc
2/Month
Composite
E
Silver
2/Month
Composite
E
Selenium
20 pig/
28 µg/L
Weekly
Composite
E
Lead
34 µgIL
142 µg/L
Weekly
Composite
E
Footnotes:
1. E: Effluent, I: Influent, U: Upstream in Mud Creek above outfall; D: Downstream at NCSR 1365.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected
three times per week during June, July, August and September and once per week during the
remaining months of the year.
2. The monthly average effluent BOD5 and Total Suspended Residue 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 5.0 mg/L.
4. The total residual chlorine limit and monitoring requirements are only applicable if facility uses
chlorination for disinfection.
5. Whole effluent toxicity will be monitored using the Pass/Fail Chronic Toxicity test with
Ceriodaphnia at 18%. See A.(5.).
6. 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

Permit NC0025534
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning upon expansion above 4.8 MGD 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 Y � �_} � ,-.:;-'1,' '
CHARACTERISTICS
.
. •
LIMITS , -.:.
;: MONITORING REQUIREMENTS '
_
'
- Monthly.
Average
-:< Weekly .
Average :.
•:=. Daily •
Maximum
Measurement,
Frequency '
: Sample,
, 'Type
Sample Location1
Flow
6.0 MGD
Continuous
Recording
I or E
BOD, 5-day (20°C)2
(April 1- October 31)
10.0 mg/L
15.0 mg/L
Daily
Composite
I & E
BOD, 5-day (20°C)2
(November 1- March 31)
20.0 mg/L
30.0 mg/L
Daily
Composite
I & E
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
I & E
NH3 as N
(April 1- October 31)
2.0 mg/L
Daily
Composite
E
NH3 as N
(November 1- March 31)
4.0 mg/L
Daily
Composite
E
Dissolved Oxygen3
Daily
Grab
E, U, D
Fecal Coliform (geometric mean)
200/100 ml
400/100 ml
Daily
Grab
E, U, D
Total Residual Chlorine4
28 µg/L
Daily
Grab
E
Temperature (°C)
Daily
Grab
E, U, D
Total Nitrogen
(NO2+NO3+TKN)
Quarterly
Composite
•
E
Total Phosphorus
Quarterly
Composite
E
Chronic Toxicity6
Quarterly
Composite
E
pH6
Daily
Grab
E
Cadmium
9.5 µg/L
Weekly
Composite
E
Cyanide
22 µglL
24 µg/L
Weekly
Grab
E
Mercury
0.06 µg/L
Weekly
Composite
E
Copper
2/Month
Composite
E
Zinc
2/Month
Composite
E
Silver
2/Month
Composite
E
Selenium
20 µg/L
24 µg/L
Weekly
Composite
E
Lead
34 µg/L
119 µg/L
Weekly
Composite
E
Footnotes:
1. E: Effluent, I: Influent, U: Upstream in Mud Creek above outfall; D: Downstream at NCSR 1365.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected
three times per week during June, July, August and September and once per week during the
remaining months of the year.
2. The monthly average effluent BOD5 and Total Suspended Residue 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 5.0 mg/L.
4. The total residual chlorine limit and monitoring requirements are only applicable if facility uses
chlorination for disinfection.
5. Whole effluent toxicity will be monitored using the Pass/Fail Chronic Toxicity test with
Ceriodaphnia at 21%. See A.(6.).
6. 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

Permit NC0025534
A. (4.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) - 3.2 MGD
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 22%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,
or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
February, May, August and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ
Form AT-3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no
later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and
all concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT)
test form indicating the facility name, permit number, pipe number, county, and the month/year of
the report with the notation of "No Flow" in the comment area of the form. The report shall be
submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate environmental
controls, shall constitute an invalid test and will require immediate follow-up testing to be completed
no later than the last day of the month following the month of the initial monitoring.

Permit NC0025534
A. (5.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) — UPON
EXPANSION ABOVE 3.2 MGD UNTIL EXPANSION ABOVE 4.8 MGD
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 18%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,
or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
February, Mary, August and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ
Form AT-3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no
later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and
all concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT)
test form indicating the facility name, permit number, pipe number, county, and the month/year of
the report with the notation of "No Flow" in the comment area of the form. The report shall be
submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate environmental
controls, shall constitute an invalid test and will require immediate follow-up testing to be completed
no later than the last day of the month following the month of the initial monitoring.

Permit NC0025534
A. (6.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) — UPON
EXPANSION ABOVE 4.8 MGD
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 2 1%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,
or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
February, May, August and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/ fail results and THP3B for the Chronic Value. Additionally, DWQ
Form AT-3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no
later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and
all concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT)
test form indicating the facility name, permit number, pipe number, county, and the month/year of
the report with the notation of "No Flow" in the comment area of the form. The report shall be
submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate environmental
controls, shall constitute an invalid test and will require immediate follow-up testing to be completed
no later than the last day of the month following the month of the initial monitoring.

OFFICERS:
Fred H Niehoff. Jr
Mayor
Mary Jo Padgett
Mayor Pro-Tem
Chris A. Carter
City Manager
Tammie K. Drake
City Clerk
December 1, 2000
CITY OF HENDERSONVILLE
"The City of Four Seasons"
WATER AND SEWER DEPARTMENT
Ezra Allman, DirectolLb
-
Ms. Natalie Sierra
NCDENR - DWQ - NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Dear Ms. Sierra:
DEC - 7 2000
DENR WATER QUALITY
POINT SOURCE BRANCH
CITY COUNCIL:
J. CRITTENDEN HARLEY
LONDA MURRAY
MARY JO PADGETT
BARBARA VOLK
Subject: Comments to Draft NPDES Permit
Permit NC0025534
Hendersonville WWTP
Henderson County
The City of Hendersonville has received and reviewed the draft permit referenced above.
Any comments, questions or objections are as indicated below or as attached. The City's design
engineer's comments are attached. The City concurs with the comments received by our design
engineer and are attached as a separate document. The City of Hendersonville would respectfully
ask that those comments and/or objections submitted by our engineer be considered and
addressed as permittee comments and/or objections. Additional comments are as follow:
Monitoring requirements found on pages A. (1.)1 A. (2.), and A. (3) incorrectly show pH
and cyanide as composite samples. Grab samples should be specified.
Daily maximum limitations and monitoring requirements for Total Residual Chlorine
contained on pages A. (2) and A. (3) are not applicable and should be deleted. Those
conditions would only apply for facilities using chlorine for disinfection. Chlorine is not
used for disinfection in the 4.8 MGD or 6.0 MGD facilities.
3. Standard boilerplate language for the DWQ mailing_ address found on Part II Page 10 of
14 for reporting DMR should be corrected on all NPDES permits issued by the Division.
318 Fourth Avenue East
Hendersonville, NC 28792
e-mail: [e-mail]
P.O. Box 1760
Hendersonville, NC 28793
Phone: {828) 697-3063
Fax: [phone]
www.cityofhendersonville.org

The City of Hendersonville appreciates the opportunity to comment on this draft permit,
and should you desire clarification of any of the comments or concerns, please feel free to contact
me at 828-697-1063.
Sincerely, n
E a Allman/Director of Watet.&_Sewet i Jtilities
City of Hendersonville
cc: Mr. Chris Carter/City Manager
Mr. Charles A. Willis Jr., PE/Willis Engineers

WIIIISENGINEERS
November 29, 2000 1910.003 (34)
Mr. Ezra W. Allman
Director of Water and Sewer
City of Hendersonville
Post Office Box 1760
Hendersonville, North Carolina 28793
Subject: Draft NPDES Permit Number NC0025534
Dear Ezra:
As recently requested, I have reviewed the draft NPDES Permit forwarded to you
November 8 by the Division of Water Quality, NC Department of Environment and Natural
Resources (DENR), for the existing and expanded wastewater treatment plant. The
proposed permit is generally as we had anticipated. The treatment facilities under
construction, as well as the existing process units, are capable of meeting the effluent
requirements prescribed.
There are, however, some significant concerns which we feel should be addressed to the
City's satisfaction:
• DENR should provide definitive information explaining why lead and selenium
were added to the list of pollutants. Additionally, the calculations used in arriving
at the allowable limits for each should be provided, including allowable in -stream
concentrations and stream flow data.
For cadmium, the "weekly average allowable" unexplainably exceeds the "daily
maximum allowable". Here again, calculations giving permissible in -stream
concentrations and the appropriate stream flow data should be sought.
What stream flow values were used in arriving at the dilution values for Whole
Effluent Toxicity under the three levels of permitted discharge?
The Supplement to Cover Sheet has an erroneous entry for the existing 3.2 MGD
plant. The plant has "anaerobic digestion" rather than "aerobic digestion".
The points of discharge shown on the "Facility Location" map are incorrect. For
the existing 3.2 MGD capacity, the point of discharge is into Mud Creek above the
point of confluence with Clear Creek; not into Clear Creek as shown on the map.
For the new 4.8 / 6.0 MGD capacity, the point of discharge is downstream from SR
1508 into Mud Creek; not upstream as shown.
1520 South Boulevard
Charlotte, North Carolina 28203
704/377-9844 • FAX [phone]

WIIIISENGINEERS
Page 2
Mr. Ezra W. Allman
November 29, 2000
• The coordinates for those points of discharge are:
Existing — Latitude N35°20'59"
Longitude W82°27'50"
New — Latitude N35°21'11"
Longitude W82°27'52"
If we can be of assistance in further review or explanation, please. advise.
Yours very truly,
WILLIS ENGINEERS
Charles A. Willis, P.E., DEE
CAW/kcl

/ V L'
ORTH CAROLINA
HENDERSON COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County
and State, duly commissioned, qualified, and authorized
by law to administer oaths, personally appeared
l2 : �� //i tifa
, who
being first duly sworn, deposes and says: that he is
• STATE OF •
` NORTH _CAROLINA
of Hendersonville Newspaper Cot ration, engaged in the
publication of a newspaper know as The Times -News,
published, issued, and entered as second �����; m it in the
City of Hendersonville, in said County and'SY'a'te;dhit Torn
authorized 10 make this affidavit and sworn statement;
that the notice of other legal advertisement, a true copy of
which is attached hereto, was published in 'The Times ---
News on the following dates:
and that the said newspaper in which such notice, paper,
document, or legal advertisement was published was, at
the time of each and every publication, a newspaper meet-
ing all of the requirements and qualifications of Section 1-
597 of the General Statutes of North Carolina and was a
qualified newspaper within the meaning of Section 1-597 of
the General Statutes of North Carolina.
This / day of A-) tPi he ( 20 C'G
(SIGNED)
tl -3� `�_�c r C? LA —
Sworn to and' ubscribed before me, this
day �f /CC/_Ye: / YI 13-E
My commission expires:
Better Business Forms [phone]
/s
, 20 °C)
Notary P4blic
Tao-03
ENVIROiNMENT4
MANAGEMENT
COMMISSION/NPDES
UNIT
1617 MAIL SERVICE
CENTER
RALEIGH, NC
27699-1617
NOTIFICATION OF IN-
TENT TO ISSUE A
NPDES WASTEWATER
PERIM'
On the Casts of thorough
staff review and applica-
tion of NIC General Stat-
ute 143-21, Public law
92-500 and other lawful
standards and regula-
tions, the North Carolina
Environmental Manage-
ment Commission pro-
poses to issue a National
Pollutant Discharge Elim-
ination System (NPDES)
wastewatter discharge
permit to the person(s)
listed on The attached pa-
ges effective 45 days
from the publish date of
this notice.
Written comments
regard-
ing the proposed permit
will be accepted until 30
days after the publish
date of this notice. All
comments received prior
to that date are consid-
ered in the final determi-
nations regarding the
proposed permit. The Di-
rector of the NC Division
of Water Quality may de-
cide to (hold a public
meeting for the proposed
permit shrould the Divi-
sion receive a significant
degree of ;public interest.
Copies of Ithe draft permit
and other supporting in-
formation on file used to:
determine condtions.o
present in, the draft per:
mit are available upon
request and payment of
the costs of reproduction'^'
Mail comments and/or,;.
requests Tor information -I,.
to the NC Division of Wa'.
ter Quality at the above,'',
address or call Ms: 1;r
Christie Jackson at (9191-
733-5083, extension
538. Please include the ;F
NPDES permit number,
(attached) in any corm; !IA
m unicatiorn. Interested':
persons nnay also visit
the Division of Water..
Quality at 512 N. Salts-
hiiry -RtrPAt Ratak*, Nr. -•�
NC0069370. Emeritus,;,.
Corporation (OBA Pine'
Park Retirement Inn);'
2601 Hwy 64 EAST,.
Hendersonville, NO
28792 has applied for a ,,;
permit renewal for a fa,.;
cility located in Hender-..';,i
son County discharging -1
treated wastewater into
Clear Creek in the
French Broad River Ba--`""
sin. Currently fecal coli-
form and total residual
chlorine are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving stream.
NPDES Permit Number
NC0025534. City of Hen-
dersonville WWTP, P.O.
Box 1670, Henderson-
ville, NC 28793 has ap-
plied for a permit renewal
for a facility located in
Henderson County dis-
charging treated waste-
water into Mud Creek in
the French Broad River
Basin. Currently fecal
coliform, cadmium, cya-
nide, mercury, selenium,
lead are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving stream.
NPDES Permit Number
NC0037176. Bon Worth,
Inc., PO Box 2890, Hen-
dersonville, NC 28793
has applied for a permit
renewal for a facility lo-
cated in Henderson
County discharging treat-
ed wastewater into Al-
iens Branch in the
French Broad River Ba-
sin. Currently fecal coli-
form are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving stream.
NPDES Permit Number
NC0066681. Henderson
County Schools - West
Henderson High School,
414 4TH Avenue West,
Hendersonville, NC
28739 has applied for a
permit renewal for a fa-
cility located in Hender-
son County discharging
treated wastewater into
an Unnamed Tributary to
Mill Pond Creek in the
French Broad River Ba-
sin. Currently fecal coli-
form are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving stream.
NC0067288. Blue Moun-
tain Utilities, Inc -Hunt-
er's Glen Subdivision,
P.O. Box 18029r, Ashe-
ville, NC 28814 has ap-
plied for a permit renewal
for a facility located in
Henderson County dis-
charging treated waste-
water into Shaw Creek in
the French Broad River
Basin. Currently - fecal
coliform are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving stream:.
NPDES Permit Number
NC0069949. }Kenmure
Properties, Ltd - Site A,
10 Kenmure Driive, Flat
Rock, NC 28731 has ap-
plied for a permitt renewal
for a facility located in
Henderson County dis-
charging treated waste-
water into an Unnamed
Tributary to King Creek
in the French Bread Riv-
er Basin. Currently fecal '
coliform are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving streams.
NPDES Permit Number
NC0024431. Kanuga
Conferences Inc., PO
Drawer 250, Henderson-
ville, NC 28739 has ap-
plied for a permiit renewal
for a facility located in
Henderson County dis-
charging treated waste-
water into Litttle Mud
Creek in the French
Broad River Basin. Cur-
rently ammonia & fecal
coliform are watter quality
limited. This cdischarge
may affect future alloca-
tions in this porttion of the
receiving strearm.
NPDES Permitt Number
NC0068799. tOreystone
Subdivision - David Os -
teen, P.O. BOX 2059-
Hendersonville,; NC
28793 has applied for a
permit renewal for a fa-
cility located in Hender-
son County disschargina)
treated wastewater into
Clear Creek in the
French Broad -River Ba-
sin. Currently ,no param-
eters are watter quality/
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving strearm.
NC0056928. Kenmure
Properties, Ltd - 41. 10
Kenmure Drive, Flat
Rock, NC 28731 has ap-
plied for a permit renewal
for a facility located in
Henderson County dis-
charging treated waste-
water into King Creek in
the French Broad River
Basin. Currently fecal
coliform are water quality
limited. This discharge
may affect future alloca-
tions in this portion of the
receiving stream.
(02535473) 11/15

MEMORAND
TO:
THROUGH:
FROM:
SUBJECT:
DIVISION OF WATER QUALITY
November 21, 2000
UM
Dave Goodrich
Matt Matthews v.
Kristie Robeson 1�
Draft Permit Correction
Hendersonville WWTP
NPDES Permit No. NC0025534
Henderson County
NOV 2 8 2000
Our office has received the draft permit for the subject facility. Upon review of
this draft, our office noted that Special Conditions A(4), (5), and (6) con.Iained different
toxicity testing months than the months contained in the facility's current permit. The
facility's quarterly toxicity months currently are February, May, August, and November.
The Special Condition pages in this draft have them conducting toxicity testing during
January, April, July, and October. Our office recommends correcting the Special
Condition pages to require toxicity testing to be conducted during February, May,
August, and November. Our offices believes that changing the toxicity testing schedule
could create reporting problems for this facility.
We appreciate your assistance to undertake the necessary steps to correct the
existing draft permit and incorporate the recommendation cited above. Please feel free to
contact me at 733-2136 if you have any questions.
cc: Natalie Sierra
ESB Facility Files

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0025534
Facility Information
Applicant/Facility Name:
City of Hendersonville WWTP
Applicant Address:
PO Box 1760; Hendersonville, North Carolina 28739
Facility Address:
US Highway 25 near Balfour, North Carolina
Permitted Flow
Currently 3.2 MGD; Facility has received ATC for expansion to 6.0
MGD
Type of Waste:
95 % Domestic
5% Industrial
Facility/Permit Status:
Class 1V/Active; Renewal
County:
-Henderson County
Miscellaneous
Receiving Stream:
Mud Creek
Regional Oice:
Asheville
Stream Classification:
C
State Grid / USGS Quad:
F9SW/Henderson
303(d) Listed?
Yes
Permit Writer:
Natalie Sierra
Subbasin:
04-03-02
Date:
260ctober00
Drainage Area (mi2):
52.7 (for current
outfall), 98 (for
new outfall)
i "
'` '`'
82° 27' 47" W
3 �{ _
Summer 7Q10 (cf s)
17 (for current
outfall), 34.9 (for
new outfall)
_..,. "'e'
.: �`n.�`r
,4
Lat. 35° 21 02" N Long.
W inter 7Q 10 (cf s):
25 (for current
outfall), 46.8 (for
new outfall)
30Q2 (cfs)
41 (for current
outfall), 69.5 (for
new outfall)
Average Flow (cts):
IWC (% o):
22.2 (for 3.2
MGD), 17.6 (for
4.8 MGD), 21.1
(for 6.0 MGD)
BACKGROUND
The Hendersonville WWTP serves the City of Hendersonville and the Town of Lauryl
Park as well as three significant industrial users (SIUs). The facility is currently permitted at 3.2
MGD, but received an Authorization to Construct to expand up to 6.0 MGD. Construction for
the new expansion began in November 1999, but is still in the first phase. The current discharge
point is on Mud Creek, just above the confluence of Clear and Mud Creeks. The new outfall will
be several hundred yards downstream of the current outfall location, which is, in turn,
downstream of the confluence of Clear and Mud Creeks. This location in the stream corresponds
to a higher drainage area and a higher 7Q10. The phased expansions to 4.8 and 6.0 MGD will
both discharge to the new outfall, and the IWC for these is lower than the IWC for the 3.2 MGD
discharge due to dilution.
During this first phase of construction, Hendersonville WWTP is operating under an SOC
that grants separate interim flow and modifications to the effluent limits given by the NPDES
permit.
It is expected that the facility expansion will be complete around December 2001. The
facility states in its renewal application that it will be in compliance with the new effluent limits
by February 2002.
Instream Monitoring and Verification of Existing Conditions and DMR Data Review.
Discharge Monitoring Reports (DMRs) from January 1998 to September 2000 were
reviewed for evaluation of this facility. During this time period, the average flow was 2.7 MGD.
Fact Sheet
NPDES NC0024970 Renewal
Page 1

The facility passed all but its most recent whole effluent toxicity test. The average total residual
chlorine value was 619 ug/L; Hendersonville currently has no permit limit for total residual
chlorine.
Instream DO values are generally above 7 mg/L. Instream fecal coliform counts are often
below 400/100 mL BUT there are periods during which these counts go up between 1000-
1 0,000/1 00mL.
Reasonable potential analysis (RPA) was performed for all the metals monitored in the
NPDES permit. In addition, Hendersonville has a full Long Term Monitoring Plan (LTMP) with
the Pretreatment unit; the metals monitored under this plan are also reported on the facility's
DMRs. The results appear below.
Results of Reasonable Potential Analysis (RPA):
A reasonable potential analysis (RPA) was performed for all monitored parameters. The
results for all the parameters at the three flows are summarized in the table below.
Table 1: Results of Reasonable Potential Analysis (RPA) for City of Hendersonville
WWTP. RPA was performed for the three phases of plant expansion. A check next to the
parameter indicates that reasonable potential exists.
Parameter
Qw = 3.2 MGD
Qw = 4.8MGD
Qw = 6.0 MGD
Arsenic
Cadmium
4
q
J
Chromium
Lead
4
4
q
Copper
4
4
Nickel
Silver
q
4
q
Zinc
4
... f
q
Cyanide
q
4
4
Mercury
4
.� f
-4
Molybdenum
q
4
- f
Selenium
4
.
q
Aluminum
4
4
j
The NPDES permit currently limits:
• Cadmium
• Cyanide
• Mercury
These will continue to be limited in the new permit, with limits in accordance with the
instream waste concentration (IWC) for each phase of expansion. Lead and selenium will
all be added as limited parameters for all phases of expansion. Copper, silver, and zinc
are all action level pollutants. Unless the facility begins to experience toxicity problems
that can be linked to these metals, the parameters will remain as monitored parameters.
The monitoring frequency will be changed to twice monthly, since this is considered a
Class IV facility. Since no standard exists for molybdenum, Hendersonville will merely
be required to monitor for this pollutant twice monthly.
Correspondence: The inspection reports reveal a well -run facility with few problems. The
reports from Pretreatment inspectors also rate the facility as being in compliance There have
been, however, two NOVs issued since the SOC came into effect. One was for non -adherence to
the construction schedule stipulated by the SOC, the other for exceedence of flow..
Fact Sheet
NPDES NC0024970 Renewal
Page 2

PERMITTING STRATEGY AND SUMMARY OF PROPOSED CHANGES
The permit renewal will be, as it was previously, a phased permit for 3.2, 4.8 and 6.0
MGD. Limits for metals and oxygen consuming wastes will be allocated according to the IWC.
Metals will be monitored twice monthly for monitored parameters (copper, zinc, and silver) and
weekly for limited parameters (cadmium, cyanide, mercury, lead, and selenium). It is proposed
that the chromium monitoring requirement be removed from the permit, though the facility will
continue to monitor chromium through the LTMP.
All other limits and monitoring requirements will be as they were in the previous permit.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice:
Permit Scheduled to Issue:
November 8, 2000
January 2, 2001
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please contact
Natalie Sierra atj917) 733-5083
NAME:
REGIONAL OFFICE COMMENTS
DATE: 17- Z l) - 06
NAME: DATE:
Fact Sheet
NPDES NC0024970 Renewal
Page 3

Facility: hendersonville
NPDES#: nc0025534
Receiving Stream: mud creek
Comment(s):
gage number not available
Low Flow Record Station Number:
Hydrologic Area Number:
Drainage Area Low Flow Record Station:
Qave Low Flow Record Station:
s7Q10 Low Flow Record Station:
w7Q10 Low Flow Record Station:
30Q2 Low Flow Record Station:
Drainage Area New Site:
MAR New Site:
Qave per Report Equation:
s7Q10 per Report Equation:
w7Q10 per Report Equation:
30Q2 per Report Equation:
03.4470.0000
HA10
110
198.00 cfs
40.00 cfs
53.00 cfs
79.00 cfs
must be c 400 sq. miles
98.00 sq. miles
1.9
186 cfs
30.41 cfs
44.53 cfs
64.05 cfs
Continue
Drainage Area Ratio: 0.89 : 1
[ new DA / Da at gage Continue
Weighted Ratio: 0.85 :1
Over -ride Inappropriate Site (y ):
Drainage Area New Site:
MAR New Site:
Weighted Qave per Report Equation:
Weighted s7Q10 per Report Equation:
Weighted w7Q10 per Report Equation:
Weighted 30Q2 per Report Equation:
ll
98.00 miles squared
1.9
186 cfs
34.88 cfs
46.83 cfs
69.46 cfs

5131
NPDES/Non-Discharge Permitting Unit Pretreatment Information Request Form
NPDES OR NONDISCHARGE PERMITTING UNIT COMPLETES THIS PART:
Date of Request 10/19/00
Facility
City of Hendersonville WWTP
Permit #
NC0025534
Region
Asheville
Requestor
Natalie Sierra
Pretreatment A_D Towns- Keyes McGee (ext. 580)
Contact E-L Towns- Vacant Position
M-R Towns- Dana Folley (ext. 523)
S-Z Towns- Steve Amigone (ext 592)
cropA(..va,c,.
1.12q400
(PRETREATMENT UNIT COMPLETES THIS PART:
Status of Pretreatment Program (circle all that apply)
1) the facility has no SIU's and does have a Division approved Pretreatment Program that isINACTIVE
2 the facili has no SIU's and does not have a Division_ Pretreatment Program
_a�pro-ved
3) the facility ha Pretreatment Proms
2a is Full Program with LTMPJ or 2b) is Modified Program with STMP
4) the facility MUST develop a Pretreatment Program - Full Modified
5) additional conditions regarding Pretreatment attached or listed below
Flow Permitted Actual
% Industrial 0,3Y
STMP time frame:
recentmost
next cycle
% Domestic awl 5~t o
L
T
M
P
Pollutant
Check List
POC due to
NPDESMon-
Discharge
Permit Limit
Required
by EPA*
Required by
503 Sludge**
POC due to SIU***
Site specific POC (Provide Explanation)*"*
STMP
Frequency at
effluent
LTMP
Frequency at
effluent
V
BOD
V
4
Q
M
✓TSS
v
4
Q
M
VNH3
V
4
QM
v/
Arsenic
✓
4
Q
M
I
:Cadmium
q
/
4
Q
M
4
Chromium
4
v
4
0
M
4
Copper
.4
v
4
Q
M
✓
Cyanide
✓
4
Q
M
4
Lead, -
4
v
4
Q
M
v
Mercury
✓
4
Q
M
V
Molybdemum
•
4
Q
M
4
Nickel :-
4
V
4
Q
M
v
Silver
v
4
Q
v
Selenium
4
Q
M
4Zinc
:_
I/
V
4
Q
M
✓
lii'l ikwktKk,w.
e/
4
Q
M
4
Q
M
4
Q
M
4
Q
M
4
Q
M
4
Q
M
*Always in the LTMP
"Only in the LTMP if the POTW land applies sludge
'** Only in LTMP while the Sill is connected to the POTW
**** Only in LIMP when the pollutant is a specific concern to the POTW (ie-Chloride to a POTW who accepts Textile waste)
Q= Quarterly
M=Monthly
Comments: pinto fkateA.LO erIN. vIA es
NPDES_PIRFform.000804
Revised: August 4, 2000

REASONABLE POTENTIAL ANALYSIS
Prepared by: Natalie Sierra, 10/18/00
Facility Name =
NPDES # =
Qw (MGD) =
Qw (cfs) =
7Q 10s (cfs) =
/WC (%) =
City of Hendersonville WWTP
NC0025534
3.2
4.95104
17.4
22.18
Parameter
Chronic CCC w/s7Q10 dil.
FINAL RESULTS, ug/I
Acute CMC w/no dil.
FINAL RESULTS, ug/I
Frequency of Detection
#Samples # Detects
Arsenic
Max. Pred Cw
Allowable Cw
Cadmium
Max. Pred Cw
Allowable Cw
Chromium
Max. Pred Cw
Allowable Cw
Lead
Max. Pred Cw
Allowable Cw
Copper (A.L.)
Max. Pred Cw
Allowable Cw
Nickel
Max. Pred Cw
Allowable Cw
Silver (A.L.)
Max. Pred Cw
Allowable Cw
Zinc (A.L.)
Max. Pred Cw
Allowable Cw
Cyanide
Max. Pred Cw
Allowable Cw
Mercury
Max. Pred Cw
Allowable Cw
Molybdenum
Max. Pred Cw
Allowable Cw
Selenium
Max. Pred Cw
Allowable Cw
Aluminum
Max. Pred Cw
Allowable Cw
10.4
225.4 360
15
22.0
225.4 1022
34
909.9
31.6 7.3
153.3
396.7 261
3203.4
0.3
1836.0
225.4
400.0
NA
1.2
67
22
NA
NA
20
NA
10 0
151 3
23 0
10 1
44 31
10 2
28 12
47 44
148 121
151 4
10 6
10 1
43 35
Modified Data: Use 0.5 Detection Limit for non -detects

REASONABLE POTENTIAL ANALYSIS
Prepared by: Natalie Sierra, 10/18/00
Facility Name =
NPDES # =
Qw (MGD) =
Qw (cfs) =
7Q10s (cfs)=
!WC (%) =
City of Hendersonville V MITP
NC0025534
4.8
7.42656
34.88
17.58
Parameter
Chronic CCC w/s7Q10 dil.
FINAL RESULTS, ug/I
Acute CMC w/no dil.
FINAL RESULTS, ugfl
Frequency of Detection
#Samples # Detects
Arsenic
Max. Pred Cw
Allowable Cw
Cadmium
Max. Pred Cw
Allowable Cw
Chromium
Max. Pred Cw
Allowable Cw
Lead
Max. Pred Cw
Allowable Cw
Copper (A.L.)
Max. Pred Cw
Allowable Cw
Nickel
Max. Pred Cw
Allowable Cw
Silver (A.L.)
Max. Pred Cw
Allowable Cw
Zinc (A.L.)
Max. Pred Cw
Allowable Cw
Cyanide
Max. Pred Cw
Allowable Cw
Mercury
Max. Pred Cw
Allowable Cw
Molybdenum
Max. Pred Cw
Allowable Cw
Selenium
Max. Pred Cw
Allowable Cw
Aluminum
Max. Pred Cw
Allowable Cw
10.4
284.4
22.0
284.4
360
1022
34
909.9
39.8 7.3
153.3
500.6 261
3203.4
0.3
1836.0
284.4
1.2
67
22
NA
400.0
NA NA
20
NA
10 0
151 3
23 0
10 1
44 31
10 2
28 12
47 44
148 121
151 4
10 6
10 1
43 35
Modified Data: Use 0.5 Detection Limit for non -detects

REASONABLE POTENTIAL ANALYSIS
Prepared by: Natalie Sierra, 10/18100
Facility Name =
NPDES # =
Qw (MGD) =
Qw (cfs) =
7Q10s (cfs)=
!WC (%) =
City of Hendersonville VW TP
NC0025534
6
9.2832
34.9
21.04
Parameter
Chronic CCC w/s7Q10 dil.
FINAL RESULTS, ug/I
Acute CMC w/no dil.
FINAL RESULTS, ug/I
Frequency of Detection
#Samples # Detects
Arsenic
Max. Pred Cw
Allowable Cw
Cadmium
Max. Pred Cw
Allowable Cw
Chromium
Max. Pred Cw
Allowable Cw
Lead
Max. Pred Cw
Allowable Cw
Copper (A.L.)
Max. Pred Cw
Allowable Cw
Nickel
Max. Pred Cw
Allowable Cw
Silver (A.L.)
Max. Pred Cw
Allowable Cw
Zinc (A.L.)
Max. Pred Cw
Allowable Cw
Cyanide
Max. Pred Cw
Allowable Cw
Mercury
Max. Pred Cw
Allowable Cw
Molybdenum
Max. Pred Cw
Allowable Cw
Selenium
Max. Pred Cw
Allowable Cw
Aluminum
Max. Pred Cw
Allowable Cw
10.4
237.6
22.0
237.6
360
15
1022
34
909.9
33.3 7.3
153.3
418.2 261
3203.4
0.3
1836.0
237.6
1.2
67
22
NA
400.0
NA NA
20
NA
10 0
151 3
23 0
10 1
44 31
10 2
28 12
47 44
148 121
151 4
10 6
10 1
43 35
Modified Data: Use 0.5 Detection Limit for non -detects

OFFICERS: CITY OF HENDERSONVILLE
Fred H. Niehoff, Jr.
Mayor "The City of Four Seasons"
T. Lee Osbome Jr.
Mayor Pro-Tem WATER AND SEWER DEPARTMENT
Chris A. Carter
City Manager Ezra Allman, Director
Tammie K. Drake
City Clerk
March 15, 2000
Mr. Charles H. Weaver, Jr.
NC DENR/Water Quality/NPDES Unit
1617 Mail Service Center
Raleigh, N.0 27699-1617
Subject: Renewal of NPDES Permit NC0025534
RENDERS-QNVILLE_WWTP
HENDERSON County
Dear Mr. Weaver:
CITY COUNCIL:
BARBARA VOLK
T. LEE OSBORNE, JR.
MARY JO PADGETT
LONDA MURRAY
d
MAR 1 7 2000
DENR - WATER QUALITY
POINT SOURCE BRANCH
Attached herein is an application for the purpose of renewal of the NPDES permit
referenced above in accordance with 15A NCAC 2H.0105(e). The subject permit expires on
September 30,2000.
One major change, assumed to have occurred during~the time frame since issuance of the
last permit for the existing facility, is that the City is operating this facility under a Special Order
of Consent (SOC WQ9.5-23). The SOC stipulates construction of new expanded facilities on an
adjacent site and contains separate interim flow and pollutant limitation modifications to the
existing NPDES permit.
The existing permit contains limits pages for a 3.2 MGD and 6.0 MGD facility discharge.
The new expanded facility, the construction of which commenced late November 1999, will b6 at
a design and permitted flow of 4.8 MGD. It is the City's desire to renew the limits pages for each
of the 3.2 MGD, 4.8 MGD, and 6.0 MGD monthly average flows. An important notation is that
only the 3.2 MGD limits page is applicable to the existing discharge point on Mud Creek. The
new expanded facility (4.8 MGD) on the adjacent site will have a new relocated outfall on Mud
Creek and the existing outfall on Mud Creek will be abandoned at the end of construction. This
relocated outfall will be a few hundred yards downstream from the existing location, however, it
is also downstream of the confluence of Clear Creek and Mud Creek resulting in different 7Q10
factors to be necessarily incorporated in the permit pages for the 4.8 MGD and 6.0 MGD
discharges.
318 Fourth Avenue East
Hendersonville, NC 28792
e-mail: [e-mail]
P.O. Box 1760
Hendersonville, NC 28793
Phone: [phone]
Fax: [phone]
www.cityofhendersonville.org

Hendersonville WWTP
NPDES NC0025534
The City's sludge management plan includes a current permit for distribution of Class A
residuals (WQQ011381) issued August 9, 1995 and expiring on July 31, 2000. Since August
1998 there has been no permitted distribution activity conducted as per this permit. Commencing
in August 1998 until the present time, all residual disposal has been in an approved municipal solid
waste RCRA landfill in South Carolina (Palmetto Landfill and Recycling Center/permit nbr.
422401-1101). The landfill is located at 251 New Hope Road, Wellford, South Carolina 29385
(tel. [phone]) in accordance with South Carolina Solid Waste Regulations R.61-107.258.
NCDENR and EPA have been notified of this change in residual management. This disposal
option will continue indefinitely however, it will be the City's desire to renew its Class A
distribution permit upon expiration to maintain that disposal option.
Separate documentation is attached to this application for the present operating status;
potential facility changes; flow schematic; and location maps in reference to Section I, item 6
(Facility Description) application requirements.
Should you have any questions, or require additional information, please do not hesitate to
contact me at 828-697-3063.
Yours very truly,
a W. Allman, Director
ater.and Sewer Utilities
City of Hendersonville .

Hendersonville WWTP
NPDES NC00.25534
SECTION I
Item 6
Present Operating Status:
The existing wastewater treatment plant, located south of Balfour Road adjacent to Mud
Creek, was built in several stages. The initial facilities were installed in the early 1960's
with the influent pumping station located on Berkeley Road about 3,000 feet upstream
from the treatment units. These facilities consisted of a traditional primary clarifier,
trickling filter, and secondary clarifier with a separate anaerobic digester and sand sludge
drying beds (14) with combined area of 30,800 sq. ft.
Several additions have been made to the plant to increase its nominal design capacity to
3.2 MGD. Plant capacity expansion has been achieved through the installation of an
oxidation ditch,. an additional secondary clarifier, and a sludge belt press intended to
reduce reliance on the sludge drying beds.
The influent pumping station has four pumps, with individual pump capacities ranging
from 700 gpm to 2,800 gpm. The combined capacity of these pumps operated in parallel
approaches 5.4 MGD. A coarse bar screen prevents major damage to the pumping_units.
At the treatment plant site wastewater flow passes through an influent magnetic flow -
meter thence to six parallel static screens and dual aerated grit chambers. Downstream
from the screening and grit removal devices, flow discharges to a 65-foot diameter
primary clarifier with 8.5 feet SWD and thence to a 120-foot diameter trickling filter.
Effluent from the trickling filter flows to a three -cell oxidation ditch with 1.5 MG volume
and 11 hour detention time and thence to two parallel secondary clarifiers, one each 65
feet in diameter with 8.5 feet SWD and 90 feet in diameter with 8.0 feet SWD. Recycle
sludge underflow from the clarifiers is returned to the oxidation ditch to sustain the
activated sludge process. Recycle pumps (2) are rated at 600 gpm. Overflow from the
secondary clarifiers flows to a chlorine contact basin with 70,000 gallons volume and 31
minute detention followed by effluent flow measurement by 90 degree V-notch weir
primary measuring device and thence to Mud Creek.
The sludge from the primary clarifier is pumped to a 50-foot diameter, 8,000 cubic foot
anaerobic digester. The secondary sludge, wasted from the activated sludge process in
parallel with the recycle flow from the secondary clarifiers, is pumped directly to the one -
meter belt press (60 gpm) for dewatering by use of two (2) waste sludge pumps rated at
75 gpm.

Hendersonville WNTP
NPDES NC0025534
Potential Facility Changes:
Expansion plans and specifications have been approved by NCDENR for the 4.8 MGD
facility. Construction on the new expanded facility has commenced with final construction to be
completed around December 2001 and compliance with final effluent limits around the end of
February 2002.
Schematicof wastewater flaw: Seezttaclinient
Location map: See attachment

$ •
NC DENR / DWQ -/ NPDES PERMIT APPLICATION STANDARD FORM A
Municipal Facilities with permitted flows >1 MGD or with:pretreatment programs
SECTION Ill. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a separate Section Ill for each Significant Industrial User.
1. Significant Industrial User (SIU)
An SIU has (or could have) significant impact on the POTW receiving the wastewater or upon the quality of effluent from the receiving POTW.
Specifically, an SIU:
• has a flow of 50,000 gallons or more per average workday;
• has a flow greater than 5 percent of the total flow carried by the municipal system m receiving the waste, or
• has a toxic material in its discharge.
It may be necessary to alter these administrative criteria in certain cases, such as an instance where two or more contributing industries in
combination can produce an undesirable effect on either the municipal facility or the quality of its effluent.
Name of SIU Kimberly—Clark Corp.
Street address
32 Smythe Street
City HENDERSONVILLE County Henderson
State North Carolina Zip Code 28792
Telephone Number
Fax Number
e-mail address
( 828) 697-4028
( 828 ). 697-412.6—
[e-mail]
[e-mail]
2. Primary Product or Raw Material
Specify, either the principal product or the principal raw material and the maximum quantity.per day produced or. consumed.
Quantities are to be reported in the unitsof measurement for each SIC. ca_ tegory at the facility. - SIC categories should use the units of
measurement normally used by that industry.
SIC
2297
SIC
2679
Product
. Raw Material
Quantity .
' Units
Non —woven Roll Goods
_ _ . •
224 metric
inns/tay
mvs/1 mp
Bleached Cotton Linters
•
8.67 metric
tonsfday
mtons
3. Flow
Indicate the volume of water discharged into the POTW and whether this discharge is intermittentor continuous
0.0706MGD
❑ Intermittent .® Continuous
.4of4

NC DENR / DWQ ./ NPDES PERMIT APPLICATION - STANDARD FORM A
Municipal Facilities with permitted flows >1 MGD or with:pretreatment programs
SECTION 111. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a separate Section III for each Significant Industrial User.
1. Significant Industrial User (SIU)
An SIU has (or could have) significant impact on the POTW receiving the wastewater or upon the quality of effluent from the receiving POTW.
Specifically, an SIU:
• has a flow of 50,000 gallons or more per average workday;
• has a flow greater than 5 percent of the total flow carried by the municipal system m receiving the waste, or
• has a toxic material in its discharge.
It may be necessary to alter these administrative criteria in certain cases, such as an instance where two or more contributing industries in
combination can produce an undesirable effect on either the municipal facility or the quality of its effluent.
Name of SIU COATS AMERICA (formally Barbour Threads)
Street address Hwy . 64 West
City HENDERSONVILLE
County
Henderson
State North Carolina Zip Code 28739
Telephone Number ( 828) 6 9 3 -4 2 2 2
Fax Number ( 828) .692-7156
e-mail address
bruce.duncan@coat,s.com
2. Primary Product or Raw Material
Specify either the principal product or the principal raw material and the maximum quantity -per day produced or consumed.
Quantities are to be reported in the units of measurement for each SIC category at the facility.. SIC categories should use the units of
measurement normally used by that industry.
SIC
8284
SIC
2821
Product
Raw Material
Quantity _
Units
Industrial synthetic
sewing threads
_ -
40,000
lbs/wee}
Substituted nylon polymer
1,200
lbs/wee}
3. Flow
Indicate the volume of water discharged into the POTW and whether this discharge is intermittent -or continuous
0.0228 MGD
El Intermittent .® Continuous
4:of 4

5c t-4.4kc
q�s
0.064 r.,4.0
Foow• t.teR 2.i?z w%es- D
ri-s....,,,J,,
lra sT 4,44G O.
-->... --"1
p•
jr-touurt e . a o q
SiwJte, PIS r.(.o
Pr1Try
TRicKtiZ)ct
A& 4 voto c
D►.testGR
emm
HENDERSONVILLE WWTP?
NC0025534
ScAreewJ‘wy s
Ixs Qo S4L
C tAStw.t•� sS
A d Pr•et.$S
\
s
sk 2*.as
'to
0'64 Per o.3
Goa -hoer
on.40.4sair
QFG1ve..lt' Z. 8Z i fr'D
!ro hA•�.eC Crc�%
4 wwS
1
L efa.c‘okte
10 D1Sir1�4d-1v
dt. ZSO To"'s! iR
141

N
■
■
FREN HBROAD
RIVER Qa
-0
CC
4.8mgd & 6.0mgd
NEW WWTP & OUTFALL
EXISTING WWTP &
3.2mgd
(leek iv t.l�ur' �74IU=AO
35 Z I Z 3
a&
Lfl 0:
Featherstone Creek
HENDERSONVILLE WWTP
N00025534
CLEAR CREEK
0 T-O-T Station
o3L1 3� S L a L-/
/1 Vet-= S ..l , l�

• 0
OFFICERS
Fred H. Niehoff, Jr.
Mayor
T. Lee Osborne
Mayor Pro-Tem
Chris A. Carter
City Manager
Tammie K. Drake
,City Clerk December 8, 1999
CITY OF HENDERSONVILLE
"The City of Four Seasons"
WATER AND SEWER DEPARTMENT
Ezra Allman, Director
Marsha Lieber
Division of Water Quality
Water Quality Section — Point Source Branch
1617 Mail Service Center
Raleigh, N. C. 27699— 1617
Subject: SOC WQ 95-23 Ad 11
NPDES Permit Number NC0025534
Requested Time Schedule Amendment
Dear Ms. Lieber
We request amendment to the time schedule contained in Section 2 (b) G that currently
reads "Begin construction of plant improvements by July 1,-1999".
The requested revsedcschedule is:
•
1. Begin construction of plant improvements November 29, 1999.
2. Complete final construction: and place expanded facilities on line: November
27, 2001.
. Comply with final effluent, lim ts: February.•
•
COMMISSIONERS
T. Lee Osborne, Jr.
Mary Jo Padgett
Barbara Volk
J. Crit Harley
Construction bids for the proposed ptoject,were receive99. =On November
10, 1999, the Construction'Grants and Loans Section authorizer the ;City to Award
contracts. Following aPreconstruction'Conference on November 17,'Notices to Proceed
were issued to correspond -to the time limits set -firth above
Please advise if you have any questions.
Yours very truly.
Ezra W. Allman, Director
Water and Sewer Utilities
CITY OF HENDERSONVILLE
CC: Mr. Roy Davis, Asheville Regional Office, DWQ
Mr. Chris A. Carter, City Manager
Mr. Charles A. Willis, Willis Engineers
•
318 Fourth Avenue East
Hendersonville, NC 28792
P.O. Box 1760 Phone: [phone]
Hendersonville, NC 28793 Fax: [phone]