NC0024970_Permit Modification_20020515

NPDES DOCUMENT SCANNING COVER SHEET
NC0024970
McAlpine Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
rermit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Meeting Notes
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
May 15, 2002
Miss document is printed on reuse paper - ignore aunty
content on the reizerse side

State of North Carolina
t9nartment of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
May 15, 2002
Mr. Douglas Bean
CMUD Administrative Division
5100 Brookshire Boulevard
Charlotte, North Carolina 28216
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification
Permit NC0024970
CMUD McAlpine Creek WWTP
Mecklenburg County
Dear Mr. Gullet:
On March 1, 2001, a final permit for the subject facility became effective. As per the settlement agreement
signed by CMUD, South Carolina Department of Health and Environmental Control and the North Carolina
Division of Water Quality on January 15, 2002, this permit must be modified to include a phosphorus limit. This
major modification request was submitted to the Division on January 15, 2002 and acknowledged on February 1,
2002 and contains the terms of the agreement applicable to the phosphorus limit at McAlpine Creek (as well as the
conditions relating to the three CMUD plants as a whole). The permit has been modified in accordance with the
settlement agreement. Any changes to the draft version are the result of discussions between all the interested parties
(CMUD, SC-DHEC, NC-DWQ, and EPA Region 4) and have been agreed to by all parties. These include changes
to the instream monitoring conditions and the methodology of calculating the phosphorus limit.
Please find enclosed the revised permit pages. The revised pages should be inserted into your permit. The
old pages may then be discarded. All other terms and conditions contained in the original permit remain unchanged
and in full effect. This permit modification is issued under the requirements of North Carolina General Statutes 143-
215.1 and the Memorandum of Agreement between North Carolina and the U. S. Environmental Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit modification 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 a written petition conforming to Chapter 150B of the North
Carolina General Statutes, 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.
If you have any questions concerning this permit modification, please contact Natalie Sierra at (919) 733-
5083, extension 551.
cc Mooresville Regional Office, Water Quality Section
NPDES Unit
Point Source Compliance and Enforcement
US EPA Region 4
Central Files
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
An Equal Opportunity Affirmative Action Employer
Sincerely,
Original Signed By
David A. Goodrich
Gregory). Thorpe, Ph.D.
Telephone [phone] FAX [phone]
VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.usiNPDES

• Permit NC0024970
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,
Charlotte -Mecklenburg Utility Department
is hereby authorized to discharge wastewater from a facility located at the
McAlpine Creek Wastewater Treatment Plant
On US Highway 521
South of Charlotte
Mecklenburg County
to receiving waters designated as McAlpine Creek in the Catawba 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 June 1, 2002.
This permit and authorization to discharge shall expire at midnight on February 28, 2006.
Signed this day May 15, 2002.
Original Signed By
David A. Goodrich
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission

4.
Permit NC00249 7 0
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning on May 1, 2002 and lasting until February 27, 2006, 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
Averaje
Weekly
Averaje
Daily
Maximum
Measurement
Frequency
Sample Type
T
Sample Locations
„
Flow
64.0 MGD
Continuous
Recording
I or E •
CBOD, 5-day (202C)2
April 1- October 31
4.0 mg/L
6.0 mg/L
Daily
Composite
E, I
CBOD, 5-day (202C)2
November 1- March 31
8.0 mg/L
12.0 mg/L
Daily
Composite
E, I
Total Suspended Residue2
15.0 mg/L
22.5 mg/L
Daily
Composite
E, I
NH3 as N (April 1- October 31)
1.0 mg/L
Daily
Composite
E
NH3 as N (November 1-March 31)
1.9 mg/L
Daily
Composite
E
Dissolved 0xygen3
Daily
Grab
E, U, D
Fecal Conform
(geometric mean)
200 / 100 ml
400 / 100 ml
Daily
Grab
E
Total Residual Chlorine's
17 µg/L
Daily
Grab
E
Temperature (2C)
Daily
Grab
E, U, D
Total Nitrogen (NO2 + NO3 + TKN)
Monthly .
Composite
E
Total Phosphorus5
Monthly
Composite
E
Chronic Toxicity6
Quarterly
Composite
E
Conductivity
•
Daily
Grab
E, U, D
Chromium
51 µg/L
204 µg/L
Weekly
Composite
E
Lindane
0.01 µg/L
Weekly
Grab
E
Copper
2/Month
Composite
E, U, D
Cyanides
5 µg/L
15 µg/L
Weekly
Grab
E
Lead
26 µg/L
34 µg/L
Weekly
Composite
E
Silver
2/Month
Composite
E
Zinc .
2/Month
Composite
E, U, D
Mercury8
0.012 µg/L
Weekly
Composite
E
Molybdenum
2/Month
Composite
E
Footnotes:
1 Sample Locations: E - Effluent, I - Influent, U - Upstream, D- Downstream. For instream
monitoring requirements, see Parts A. (6.) A.(9.).
2The monthly average effluent CBOD5 and total suspended residue concentrations shall not exceed
15% of the respective influent value.
3 The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/L.
4 The daily average limit for total residual chlorine shall be 28 µg/L.
5See Part A. (3.). for additional nutrient monitoring information.
6 Whole effluent toxicity shall be measured by Chronic Toxicity (Ceriodaphnia) P/F at 90 %. Samples
shall be taken quarterly during the months of March, June, September and December. See Part A.
(5.).
7 The Division of Water Quality shall consider all cyanide concentrations reported below 10 ug/L to
be "zero" for permit -compliance purposes only.
8 The quantitation limit for mercury shall be 0.2 ug/1 (0.2 ppb). Levels reported at less than 0.2 ug/1
shall be considered zero for compliance purposes.
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 NC0024970
A. (2:) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on February 28, 2006 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
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location1
,
Flow
64.0 MGD
Continuous
Recording
I or E
CBOD, 5-day (209C)2
April 1- October 31
4.0 mg/L
6.0 mg/L
Daily
Composite
E, I
CBOD, 5-day (20°C)2
November 1- March 31
8.0 mg/L
12.0 mg/L
Daily
Composite
E, I
Total Suspended Residue2
15.0 mg/L
22.5 mg/L
Daily
Composite
E, I
NH3 as N (April 1- October 31)
1.0 mg/L
Daily
Composite
E
NH3 as N (November 1-March 31)
1.9 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
Total Residual Chlorines
17 µg/L
Daily
Grab
E
Temperature (9C)
Daily
Grab
E, U, D
Total Nitrogen (NO2 + NO3 + TKN)
Monthly
Composite
E
Total Phosphorus5
Monthly Average: 1,067.0 lbs.day
12-month Average: 534 lbs./day
Monthly
Composite
E
Chronic Toxicitys
Quarterly
Composite
E
Conductivity
Daily
Grab
E, U, D
Chromium
51 µg/L
204 µg/L
Weekly
Composite
E
Lindane
0.01 µg/L
Weekly
Grab
E
Copper
2/Month
Composite
E, U, D
Cyanides
5 µg/L
15 µg/L
Weekly
Grab
E
Lead
26 µg/L
34 µg/L
Weekly
Composite
E
Silver
2/Month
Composite
E
Zinc
-
2/Month
Composite
E, U, D
Mercury8
0.012 µg/L
Weekly
Composite
E
Molybdenum
2/Month
Composite
E
Footnotes:
1 Sample Locations:'E - Effluent, I - Influent, U - Upstream, D- Downstream. For instream monitoring
requirements, see Parts A. (6.)- A.(9.).
2The monthly average effluent CBODs and total suspended residue concentrations shall not exceed 15% of the
respective influent value.
3 The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/L.
4 The daily average limit for total residual chlorine shall be 28 µg/L.
5 The 12-month average limit will remain in effect until such time as the total combined discharge limit
stipulated in Part A. (3.) comes into effect (including the 12-month period of data collection to determine
compliance with the annual rolling average limit). Once the total combined discharge limit is effective, the 12-
month average limit is 826 lbs./day for all three CMUD plants (McAlpine, Irwin and Sugar Creek WWTPs)
combined. See Part A. (3.). for additional information on this limit. Part A. (4.) describes the methodology for
calculation of the monthly average and 12-month limits.
Whole effluent toxicity shall be measured by Chronic Toxicity (Ceriodaphnia) P/F at 90 %. Samples shall be
taken quarterly during the months of March, June. September and December. See Part A. (5.).
7 The Division of Water Quality shall consider all cyanide concentrations reported below 10 ug/L to be "zero" for
permit -compliance purposes only.
8 The quantitation limit for mercury shall be 0.2 ug/1 (0.2 ppb). Levels reported at less than 0.2 ug/1 shall be
considered zero for compliance purposes.
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 NC0024970
A. (3.) TOTAL PHOSPHORUS LIMIT
As stipulated by the 2002 Settlement Agreement between Charlotte -Mecklenburg Utilities
Department (CMUD), the South Carolina Department of Health and Environmental Control (SC
DHEC) and the North Carolina Division of Water Quality (NC-DWQ), CMUD's McAlpine Creek WWTP,
Sugar Creek WWTP and Irwin Creek WWTP must comply with a limit of 826.0 lbs/day. This limit is
defined as an effluent limit for total phosphorus from the total combined discharge from the three
referenced CMUD wastewater treatment plants (based on a 12-month rolling average). The
methodology for calculating the annual average is described in Part A. (4.).
The compliance dates for the limit are as follows. If CMUD conducts construction activities
associated with phosphorus removal at either the Sugar Creek WWTP or the Irwin Creek WWTP, the
annual average limit of 826.0 lbs/day (based on the collective discharge from all three plants) shall
become effective February 28, 2007. Said construction activities will also trigger an effluent limit for
total phosphorus for the McAlpine Creek WWTP of 534.0 lbs/day (based on a 12-month rolling
average) as of February 28, 2006 (as stipulated in Part. A. (2.) of NPDES Permit NC0024970). If
however, CMUD decides not to pursue construction activities, associated with phosphorus removal,
at either the Sugar Creek WWTP or the Irwin Creek WWI'P, the total phosphorus annual average limit
applicable to the loading from all three WWTPs, shall become effective on February 28, 2006.
A. (4.) TOTAL PHOSPHORUS MONITORING
The Permittee shall calculate a 12-month rolling average mass loading as the sum of monthly
loadings, according to the following equations:
(1) Monthly Average (lbs./day) = TP x Qw x 8.34
where:
TP = the arithmetic average of total phosphorus concentrations (mg/L) obtained via composite
samples (either daily, weekly, or monthly average values) collected during the month
Qw = the average daily waste flow (MGD) for the month
8.34= conversion factor, from (mg/L x MGD) to pounds
The 12-month rolling average mass loading is defined as the sum of the monthly average loadings for
the previous 12 months inclusive of the reporting month:
12
(2) 12-Month Mass Loading (lbs./day)= TPma =12 (inclusive of reporting month)
Where:
TPma is defined as the total phosphorus monthly average mass loading (calculated above).
The monthly average and 12-month average mass loadings shall be reported on the attached
worksheet and submitted with the discharge monitoring report for McAlpine Creek WWTP. The first
worksheet is due with the discharge monitoring report, 12 months from the effective date of the total
phosphorus limit (referenced in Special Condition A. (3)). In the interim period between the effective
date and the requirement to submit the attached worksheet, the total phosphorus monthly average -
mass loadings should be reported on the discharge monitoring report for the respective facility.
The Permittee shall report the total phosphorus concentration for each sample on the appropriate
discharge monitoring report for each facility. Reporting of and compliance with the phosphorus limit
shall be done on a monthly basis.

Permit NC0024970
A. (5.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT
'The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90%.
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 March, June, September, and December. 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 NC0024970
A. (6.) IRWIN CREEK MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the ,
Permittee shall monitored Irwin Creek as specified below:
STATION
ID
LOCATIONI
PARAMETER
MONITORING
REQUIREMENTS
Measurement
Frequency
Sample
Type
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Dissolved Oxygen
Variable'
Grab
IC1
Irwin Creek— Upstream of Irwin Creek WWTP
Temperature
Variable'
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Conductivity
Variable'
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Chromium
Monthly
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Copper
Monthly
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Zinc
Monthly
Grab
Footnotes:
1. Variable = Weekly (June 1- Sept 30) and monthly (Oct 1- May 31)
It is recommended that instream monitoring for stations IC1, SC1, SC2, SC3, SC4, SC5, LSC1, MC1 and MC2
be conducted during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP. Irwin Creek WWTP and Sugar Creek WWTP are
identical. Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge
Monitoring Reports.
A. (7.) MCALPINE CREEK MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
STATION
ID
LOCATION1
•
PARAMETER
Measurement
Sample
Frequency
Tyne
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Dissolved Oxygen
Variable'
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Temperature
Variable'
Grab
MCI
McAlpine Creek — Upstream of McAlpine Creek WWTP
Conductivity
Variable'
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Chromium
Monthly
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Copper
Monthly
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Zinc
Monthly
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Dissolved Oxygen
Variable'
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Temperature
Variable'
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Conductivity
Variable'
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Chromium
Monthly
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Copper
Monthly
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Zinc
Monthly
Grab
Footnotes:
1. Variable = Weekly (June 1- Sept 30) and monthly (Oct 1- May 31)
It is recommended that instream monitoring for stations IC1, SC1, SC2, SC3, SC4, SC5, LSC1, MC1 and MC2
be conducted during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP, Irwin Creek WWTP and Sugar Creek WWTP are
identical. Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge
Monitoring Reports.

Permit NC0024970
A. (8.) SUGAR CREEK MONITORING REQUIREMENTS
, During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee shall monitored Sugar Creek as specified below:
STATION
ID
LOCATIONI
PARAMETER
Measurement
Sample
Frequency
Type
SC1 ^
Sugar Creek downstream of confluence with Irwin Creek at
Yorkmont Road
Dissolved Oxygen
Variable'
Grab
SC1
Sugar Creek downstream of confluence with Irwin Creek at
Temperature
Variable'
Grab
SC1
Sugar Creek downstream of confluence with Irwin Creek at
Conductivity
Variable'
Grab
SC2
Sugar Creek downstream of confluence with Irwin Creek at
Dissolved Oxygen
Variable'
Grab
SC2
Sugar Creek downstream of confluence with Irwin Creek at
Temperature
Variable'
Grab
SC2
Sugar Creek downstream of confluence with Irwin Creek at
Conductivity
Variable'
Grab
SC3
Sugar Creek downstream of confluence with Irwin Creek at
Dissolved Oxygen
Variable'
Grab
SC3
Sugar Creek downstream of confluence with Irwin Creek at
Temperature
Variable'
Grab
SC3
Sugar Creek downstream of confluence with Irwin Creek at
Conductivity
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Dissolved Oxygen
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Temperature
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Conductivity
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Chromium
Monthly
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Copper
Monthly
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Zinc
Monthly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Dissolved Oxygen
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
Temperature
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
Conductivity
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
pH
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Ammonia (NH3-N)
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
Nitrate/Nitrite (NOX)
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Total Kjeldahl
Nitrogen (TKN)
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Total Phosphorus
Weekly
.
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Orthophosphate
Weekly
Grab

Permit NC0024970
A. (8.) SUGAR CREEK MONITORING REQUIREMENTS (CONTINUED)
Footnotes:
1. Variable = Weekly (June 1- Sept 30) and monthly (Oct 1- May 31)
It is recommended that instream monitoring for stations IC 1, SC1, SC2, SC3, SC4, SC5, LSC1, MC 1 and MC2
be conducted during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWI?, Irwin Creek WWTP and Sugar Creek WW'IP are
identical. Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge
Monitoring Reports.
A. (9.) LITTLE SUGAR CREEK MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee shall monitored Little Sugar Creek as specified below:
STATION
ID
LOCATION1
PARAMETER
Measurement
Sample
Freauencv
Type
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Dissolved Oxygen
Variable'
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Temperature
Variable'
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Conductivity
Variable'
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Copper
Monthly
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Zinc
Monthly
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Dissolved Oxygen
Variable'
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Temperature
Variable'
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Conductivity
Variable'
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Chromium
Monthly •
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Copper
Monthly
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Route 521
Zinc
Monthly
Grab
Footnotes:
1. Variable = Weekly (June 1- Sept 30) and monthly (Oct 1- May 31)
It is recommended that instream monitoring for stations IC 1, SC1, SC2, SC3, SC4, SC5, LSC 1MC 1 and MC2 be conducted
during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP, Irwin Creek WWTP and Sugar Creek WWTP are identical.
Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge Monitoring Reports.
The revised instream monitoring program, no longer requires monitoring of station ISC2. The LSC2 designation continues to
refer to the sampling station on Little Sugar Creek downstream of the Sugar Creek WWTP at Archdale Road: however. this
station is inactive.

Re: CMUD final mod '
Subject: Re: CMUD final mod
Date: Tue, 07 May 2002 15:26:55 -0400
From: "Jeff deBessonet"<[e-mail]>
To: <[e-mail]>
The "Effective May 1st" part is the only thing I'll mention since we've slipped past
that date.
JEFF
»> Natalie Sierra <[e-mail]> 05/07/02 11:32AM »>
Ok everyone -
Here is the pre -final draft. Send any comments to me by the end of the day -
I want to get it processed tomorrow.
Thanks,
Natalie
1 of 1 5/9/02 10:27 AM

RE: CMUp final mod .
Subject: RE: CMUD final mod
Date: Tue, 30 Apr 2002 14:35:03 -0400
From: "Gullet, Barry" <[e-mail]>
To: "'Natalie Sierra" <[e-mail]>
CC: "Jarrell, Jackie" <[e-mail]>,
"Benne Hutson (E-mail)" <[e-mail]>,
Jeff deBessonet<[e-mail]>,
Dave Goodrich <[e-mail]>, Dee Stewart <[e-mail]>
Natalie,
We believe that this latest version is correct with one minor exception.
In the worksheet, the last row should be entitled "12-Month Mass Loading"
and not "Annual Average". This is the same terminology used in the permit
modification.
Thanks.
Original Message
From: Natalie Sierra [mailto:[e-mail]]
Sent: Monday, April 29, 2002 11:15 AM
To: Gullet, Barry
Cc: Jarrell, Jackie; Benne Hutson (E-mail); Jeff deBessonet; Dave
Goodrich; Dee Stewart
Subject: Re: CMUD final mod
All -
Attached are the proposed final mod. and the calculation worksheet. Send
all
comments to me by tomorrow morning. If you object to the wording of any
part of
the permit, please send me your suggestion as to how it should be worded.
Thanks,
Natalie
1 of 1 5/7/02 11:15 AM

Re: CMUP frnal mod •
Subject: Re: CMUD final mod
Date: Mon, 29 Apr 2002 14:07:39 -0400
From: "Jeff deBessonet" <[e-mail]>
To: <[e-mail]>
Natalie:
A.4 sez "The monthly average and 12 month average ... shall be reported
attached worksheet ..."
However, the worksheet doesn't need to be submitted on March 2006 ("The
worsheet is due with the discharge monitoring report, 12 months from the
date...")
Suggestion, just leave the 1,067 off the worksheet (and the reference to
worksheet) and make a spot on the DMR for it to be reflected starting in
for each month after (separate from the 12-month rolling average stuff.
fit because the worksheet actually applies to all three and is entitled
Phosphorus Worksheet for Irwin, Sugar and McAlpine..."
Jeff deBessonet
on the
first
effective
the
March 2006
This would
"Total
»> Natalie Sierra <[e-mail]> 04/29/02 11:14AM »>
All -
Attached are the proposed final mod. and the calculation worksheet. Send all
comments to me by tomorrow morning. If you object to the wording of any part
the permit, please send me your suggestion as to how it should be worded.
Thanks,
Natalie
of
1 of 1 4/29/02 3:30 PM

Re: [Fwd:1CMUD final mod]
Subject: Re: [Fwd: CMUD final mod]
Date: Mon, 29 Apr 2002 09:08:09 -0400
From: "Jeff deBessonet" <[e-mail]>
To: <[e-mail]>
Thanks.
Jeff deBessonet
»> Natalie Sierra <[e-mail]> 04/26/02 05:10PM »>
Jeff -
Please review Barry's comments below. I believe I've addressed the first two
already and I've decided to send out a second pre -final on Monday afternoon (or
as soon as I hear from you on item 3 of Barry's e-mail).
thanks,
Natalie
"Gullet, Barry" wrote:
> Natalie,
> We have the following comments on the McAlpine permit modification:
> * The worksheet (that I understand may have contained errors) was not
> included in the document you sent
> * In Section A.(5.) the formula for calculating the 12-month rolling average
> should include division of the summation of the monthly averages by 12
> * In Section A.(5.) in the description of calculation of the monthly average
> loading, we would like to have the flexibility to use daily values or weekly
> averages or monthly averages of concentrations and flow rates to calculate
> the monthly loading. This could allow us to more accurately determine mass
> loading in the event that there are anomalies such as a high flow/low
> phosphorus or low flow/high phosphorus day or week.
> * Jeff deBessonet from DHEC and I have exchanged voice mails about questions
> he has on the permit modification, but have not been able to communicate
> directly yet. Depending on what his questions are, we may have other
> comments.
> * In light of the fact that we have already had to contest this
> modification, I request that before you issue another final permit you make
> all of the corrections and give us another opportunity to review it.
> Thanks.
> Original Message
> From: Natalie Sierra(mailto:[e-mail]
> Sent: Monday, April 22, 2002 4:08 PM
> To: Dee Stewart; Jeff deBessonet; Dave Goodrich; Gullet, Barry
> Subject: CMUD final mod
> All-
> Would you please review the attached document? It is the proposed final
> version of the McAlpine mod in consideration of everyone's comments. It
> is my understanding from talking to Mike Myers that EPA agreed to the
> changes to the instream monitoring conditions that are included in this
> mod.
> Please send all comments to me by Wednesday.
> Thanks,
> Natalie
1 of 1 4/29/02 10:30 AM

RE: CMUD final mod •
•
Subject: RE: CMUD final mod
Date: Fri, 26 Apr 2002 12:58:22 -0400
From: "Gullet, Barry" <[e-mail]>
To: "'Natalie Sierra" <Natalie. Sierra @ ncmail.net>
CC: "Jarrell, Jackie" <[e-mail]>,
"Benne Hutson (E-mail)" <benne_hutson@sh im.com>
Natalie,
We have the following comments on the McAlpine permit modification:
* The worksheet (that I understand may have contained errors) was not
included in the document you sent
* In Section A.(5.) the formula for calculating the 12-month rolling average
should include division of the summation of the monthly averages by 12
* In Section A.(5.) in the description of calculation of the monthly average
loading, we would like to have the flexibility to use daily values or weekly
averages or monthly averages of concentrations and flow rates to calculate
the monthly loading. This could allow us to more accurately determine mass
loading in the event that there are anomalies such as a high flow/low
phosphorus or low flow/high phosphorus day or week.
* Jeff deBessonet from DHEC and I have exchanged voice mails about questions
he has on the permit modification, but have not been able to communicate
directly yet. Depending on what his questions are, we may have other
comments.
* In light of the fact that we have already had to contest this
modification, I request that before you issue another final permit you make
all of the corrections and give us another opportunity to review it.
Thanks.
Original Message
From: Natalie Sierra[mailto:Natalie.SierraCancmail.netJ
Sent: Monday, April 22, 2002 4:08 PM
To: Dee Stewart; Jeff deBessonet; Dave Goodrich; Gullet, Barry
Subject: CMUD final mod
All -
Would you please review the attached document? It is the proposed final
version of the McAlpine mod in consideration of everyone's comments. It
is my understanding from talking to Mike Myers that EPA agreed to the
changes to the instream monitoring conditions that are included in this
mod.
Please send all comments to me by Wednesday.
Thanks,
Natalie
1 of 1 4/29/02 10:30 AM

Re: CMUI} final mod '
Subject: Re: CMUD final mod
Date: Thu, 25 Apr 2002 09:04:02 -0400
From: "Jeff deBessonet"<[e-mail]>
To: <[e-mail]>
Response in all caps below:
»> Natalie Sierra <[e-mail]> 04/24/02 05:23PM »>
Jeff -
Do you have a suggestion for the language regarding the end date of the 534#/day
limit? To me, the footnote in part A.(2.) conveys what you're expressing, but if
it's unclear, by all means, send me your input so that I can make it better. THE
MAIN THING IS THAT YOU AGREE THAT THE EXPECTATION IS THAT THE 534 STAYS UNTIL THE 12
MONTHS OF ROLLING AVERAGE DATA IS COLLECTED AND REPORTED AS A COMPLIANCE VALUE. AS
TO BEING MORE CLEAR, I OFFER THE FOLLOWING REVISION TO THE A.2 FOOTNOTE: " THE
12-MONTH AVERAGE LIMIT ... IN PART A.(4.) COMES INTO EFFECT, INCLUDING THE 12 MONTH
PERIOD OF DATA COLLECTION TO DETERMINE COMPLIANCE WITH THE ANNUAL ROLLING AVERAGE
LIMIT"
Barry also pointed out that under A.(5.) part 2, the calculation needs to be
divided by 12. OK.
And yes, I've gone through now and corrected the numbering. OK.
The monthly average limit for phosphorus goes into effect Feb. 28, 2006. It
seems to me to be more useful to judge compliance in March, but again, if you feel
differently or feel this is something that should be presented to the group for
evaluation, let me know. I HAVE NO PROBLEM JUDGING COMPLIANCE WITH THE 1,067 VALUE
IN MARCH 2006.
Thanks for your comments,
Natalie
Jeff deBessonet wrote:
> Comments attached.
> Jeff deBessonet
> »> Natalie Sierra <[e-mail]> 04/22/02 04:07PM »>
> All-
> Would you please review the attached document? It is the proposed final
> version of the McAlpine mod in consideration of everyone's comments. It
> is my understanding from talking to Mike Myers that EPA agreed to the
> changes to the instream monitoring conditions that are included in this
> mod.
> Please send all comments to me by Wednesday.
> Thanks,
> Natalie
> Name: MC_A2RES.doc
> MC A2RES.doc Type: Microsoft Word Document (application/msword)
> Encoding: base64
Download Status: Not downloaded with message
1 of 1 4/25/02 10:23 AM

•
DHEC
PROMOTE PROTECT
2600 Bull Street
Columbia, SC 29201-1708
COMMISSIONER:
C. Earl Hunter
BOARD:
Bradford W. Wyche
Chairman
Mark B. Kent
Vice Chairman
Howard L. Brilliant, MD
Secretary
Carl L. Brazell
Louisiana W. Wright
L. Michael Blackmon
Larry R. Chewning, Jr., DMD
PROSPER
April 24, 2002
Ms. Natalie Sierra
NC DENR
P.O. Box 29535
Raleigh, NC 27626-0535
UL, APR 3 0 2002
DENR - WATER QUALITY
POINT SOURCE BRANCH
RE: Comments: Draft McAlpine Permit (Incorporating settlement language)
NC0024970, 4/22/02 version
Dear Ms. Sierra:
1. The 12 month average limit of 534 #/day needs to remain as an enforceable
requirement beyond the time when the 826 #/day goes into "effect", since once the
826 #/day goes in effect, compliance won't be judged for 12 months [note: A.(5.)
language says "The first worksheet is due with the discharge monitoring report , 12
months from the effective date of the total phosphorus limit...]. A revision is needed
to keep the 534 #/day until the compliance of 826 #/day can be judged, correct?
Otherwise, there will be a 12 month gap between the 534 #/day and the 826 #/day.
We interpret the agreement to be that the 534 #/day stays in effect until the "total
phosphorus limit" become effective. In this, we judge the word effective to mean a
date when compliance will be judged via an individual discharge monitoring report
(DMR), i.e., one month there is a compliance limit of 534 #/day (individual to
McAlpine) and the next month, the compliance limit switches to 826 #/day
(combined).
2. Under A.(5.), part (2) where the 12-month mass loading is calculated, shouldn't the
sum of the monthly values be divided by 12?
3. Clarity needed for monthly limit of 1,067 #/day: That limit goes into effect on
February 28, 2006 per the agreement. When is the first time it will show up on the
DMR to be critiqued [my reading of the permit only speaks of the lag of 12 months,
but that would only apply to the annual rolling average]? Would it be the submission
of the February 2006 DMR (since for one day, the limit had to be met)? Would it
show up on the March 2006 DMR? The narrative talks about a 12-month lag time,
but that only applies to the 534 #/day and 826 #/day rolling average values. Also,
the 1,067 #/day never goes away, correct?
4. Under A.(4.), the last sentence of the first paragraph references Part A.(6.).
Should that be A.(5.)?
Please respond.
Sinely,
Jefffey P. deBessonet, P.E.
Director, Water Facilities Permitting Division
cc: Mike Montebello
Sam Finklea
SOUTH CAROLINA DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL

Permit NC0024970
A. (4.) TOTAL PHOSPHORUS LIMIT
As stipulated by the 2002 Settlement Agreement between Charlotte -Mecklenburg Utilities
Department (CMUD), the South Carolina Department of Health and Environmental Control (SC
DHEC) and the North Carolina Division of Water Quality (NC-DWQ), CMUD's McAlpine Creek WWTP,
Sugar Creek WWTP and Irwin Creek WWTP must comply with a limit of 826.0 lbs/day. This limit is
defined as an effluent limit for total phosphorus from the total combined discharge from the three
referenced CMUD wastewater treatment plants (based on a 12-month rolling average). The
methodology for calculating the annual average is described in Part A. W.).
The compliance dates for the limit are as follows. If CMUD conducts construction activities
associated with phosphorus removal at either the Sugar Creek WWTP or the Irwin Creek WWTP, the
annual average limit of 826.0 lbs/day (based on the collective discharge from all three plants) shall
become effective February 28, 2007. Said construction activities will also trigger an effluent limit for
total phosphorus for the McAlpine Creek WWTP of 534.0 lbs/day (based on a 12-month rolling
average) as of February 28, 2006 (as stipulated in Part. A. (2.) of NPDES Permit NC0024970). If
however, CMUD decides not to pursue construction activities, associated with phosphorus removal,
at either the Sugar Creek WWTP or the Irwin Creek WWTP, the total phosphorus annual average limit
applicable to the loading from all three WWTPs, shall become effective on February 28, 2006.
A. (.) TOTAL PHOSPHORUS MONITORING
The Permittee shall calculate a 12-month rolling average mass loading as the sum of monthly
loadings, according to the following equations:
(1) Monthly Average (lbs./day) = TP x Qw x 8.34
where:
TP = the arithmetic average of total phosphorus concentrations (mg/L) obtained via composite
samples collected during the month
Qw = the average daily waste flow (MGD) for the month
8.34= conversion factor, from (mg/L x MGD) to pounds
The 12-month rolling average mass loading is defined as the sum of the monthly average loadings for
the previous 12 months inclusive of the reporting month:
12
(2) 12-Month Mass Loading (lbs./day)= TPma (inclusive of reporting month)
Where:
TPma is defined as the total phosphorus monthly average mass loading (calculated above).
The monthly average and 12-month average mass loadings shall be reported on the attached
worksheet and submitted with the discharge monitoring report for McAlpine Creek WWTP. The first
worksheet is due with the discharge monitoring report, 12 months from the effective date of the total
phosphorus limit (referenced in Special Condition A. (5) In the interim period between the effective
date and the requirement to submit the attached worksheet, the total phosphorus monthly average
mass loadings should be reported on the discharge monitoring report for the respective facility.
The Permittee shall report the total phosphorus concentration for each sample on the appropriate
discharge monitoring report for each facility. Reporting of and compliance with the phosphorus limit
shall be done on a monthly basis.

Permit NC0024970
A. $) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, quarterlq 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 March, June, September, and December. 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 NC0024970
A. .) IRWIN CREEK MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee shall monitored Irwin Creek as specified below:
STATION
ID
LOCATION1
PARAMETER
MONITORING
REQUIREMENTS
Measurement
Frequency
Sample
Type
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Dissolved Oxygen
Variable'
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Temperature
Variable'
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Conductivity
Variable'
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Chromium
Monthly
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP
Copper
Monthly
Grab
IC1
Irwin Creek — Upstream of Irwin Creek WWTP 1
Zinc
Monthly
Grab
Footnotes:
1. Variable = Weekly (June 1 - Sept 30) and monthly (Oct 1 - May 31)
It is recommended that instream monitoring for stations IC1, SC 1, SC2, SC3, SC4, SC5, LSC 1, MC1 and MC2
be conducted during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP, Irwin Creek WWTP and Sugar Creek WWTP are
identical. Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge
Monitoring Reports.
A. (.) MCALPINE CREEK MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee shall monitored McAlpine Creek as specified below:
STATION
ID
LOCATION1
PARAMETER
Measurement
Sample
Frequency
Type
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Dissolved Oxygen
Variable'
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Temperature
Variable'
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Conductivity
Variable'
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Chromium
Monthly
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Copper
Monthly
Grab
MC1
McAlpine Creek — Upstream of McAlpine Creek WWTP
Zinc
Monthly
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Dissolved Oxygen
Variable'
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Temperature
Variable'
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Conductivity
Variable'
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Chromium
Monthly
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Copper
Monthly
Grab
MC2
McAlpine Creek downstream of confluence with McMullen
Creek at SC2964
Zinc
Monthly
Grab
Footnotes:
1. Variable = Weekly (June 1 - Sept 30) and monthly (Oct 1 - May 31)
It is recommended that instream monitoring for stations IC1, SC 1, SC2, SC3, SC4, SC5, LSC1, MC1 and MC2
be conducted during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP. Irwin Creek WWTP and Sugar Creek WWTP are
identical. Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge
Monitoring Reports.

Permit NC0024970
A. ( .) SUGAR CREEK MONITORING REQUIREMENTS
Durrng the period beginning on the effective date of the permit and lasting until expiration, the
Permittee shall monitored Sugar Creek as specified below:
STATION
ID
l_OCATIONI
PARAMETER
Measurement
Sample
Frequency .
Tyne...°'
SC1
Sugar Creek downstream of confluence with Irwin Creek at
Yorkmont Road
Dissolved Oxygen
Variable'
Grab
SC1
Sugar Creek downstream of confluence with Irwin Creek at
Yorkmont Road
Temperature
Variable'
Grab
SC1
Sugar Creek downstream of confluence with Irwin Creek at
Yorkmont Road
Conductivity
Variable'
Grab
SC2
Sugar Creek downstream of confluence with Irwin Creek at
Arrowhead Road
Dissolved Oxygen
Variable'
Grab
SC2
Sugar Creek downstream of confluence with Irwin Creek at
Arrowhead Road
Temperature
Variable'
Grab
SC2
Sugar Creek downstream of confluence with Irwin Creek at
Arrowhead Road
Conductivity
Variable'
Grab
SC3
Sugar Creek downstream of confluence with Irwin Creek at
Nations Ford Road
Dissolved Oxygen
Variable'
Grab
SC3
Sugar Creek downstream of confluence with Irwin Creek at
Nations Ford Road
Temperature
Variable'
Grab
SC3
Sugar Creek downstream of confluence with Irwin Creek at
Nations Ford Road
Conductivity
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Dissolved Oxygen
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Temperature
Variable'
Grab
SC4
-Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Conductivity
Variable'
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Chromium
Monthly
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Copper
Monthly
Grab
SC4
Sugar Creek downstream of confluence with Irwin Creek at
Route 51
Zinc
Monthly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Dissolved Oxygen
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Temperature
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Conductivity
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
pH
Variable'
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Ammonia (NH3-N)
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Nitrate/Nitrite (NOX)
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Total Kjeldahl
Nitrogen (TKN)
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Total Phosphorus
Weekly
Grab
SC5
Sugar Creek downstream of confluence with McAlpine Creek
at Route 160
Orthophosphate
Weekly
Grab

Permit NC0024970
A. (G.) SUGAR CREEK MONITORING REQUIREMENTS (CONTINUED)
Footnotes:
1. Variable = Weekly (June 1- Sept 30) and monthly (Oct 1- May 31)
It is recommended that instream monitoring for stations IC 1, SC1, SC2, SC3, SC4, SC5, LSC1, MC 1 and MC2
be conducted during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP, Irwin Creek WWTP and Sugar Creek WWTP are
identical. Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge
Monitoring Reports.
A. (10.) LITTLE SUGAR CREEK MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee shall monitored Little Sugar Creek as specified below:
STATION
ID
LOCATION1
PARAMETER
Measurement
Sample
Frequency
Tye
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Dissolved Oxygen
Variable'
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Temperature
Variable'
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Conductivity
Variable'
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Copper
Monthly
Grab
LSC1
Little Sugar Creek upstream of Sugar Creek WWTP
Zinc
Monthly
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Route 521
Dissolved Oxygen
Variable'
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Route 521
Temperature
Variable'
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Route 521
Conductivity
Variable'
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Route 521
Chromium
Monthly
Grab
LSC3
Little Sugar Creek downstream of Sugar Creek WWTP at
Route 521
Copper
Monthly
Grab
LSC3
Little Sugar Creek downstream of. Sugar Creek WWTP at
Route 521
Zinc
Monthly '
Grab
Footnotes:
1. Variable = Weekly (June 1 - Sept 30) and monthly (Oct 1 - May 31)
It is recommended that instream monitoring for stations IC 1, SC1, SC2, SC3, SC4, SC5, LSC 1 MC 1 and MC2 be conducted
during the same day or on consecutive days.
Instream monitoring requirements for McAlpine Creek WWTP, Irwin Creek WWTP and Sugar Creek WWTP are identical.
Please submit all instream monitoring results along with the McAlpine Creek WWTP Discharge Monitoring Reports.
The revised instream monitoring program, no longer requires monitoring of station LSC2. The LSC2 designation continues to
refer to the sampling station on Little Sugar Creek downstream of the Sugar Creek WWTP at Archdale Road; however, this
station is inactive.

Permit NC0024970
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning on May 1, 2002 and lasting until February 27, 2006, 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
64.0 MGD
Continuous
Recording
I or E
CBOD, 5-day (20°C)2
April 1- October 31
4.0 mg/L
6.0 mg/L
Daily
Composite
E, I
CBOD, 5-day (209C)2
November 1 — March 31
8.0 mg/L
12.0 mg/L
Daily
Composite
E, I
Total Suspended Residue2
15.0 mg/L
22.5 mg/L
Daily
Composite
E, I
NH3 as N (April 1 — October 31)
1.0 mg/L
Daily
Composite
E
NH3 as N (November 1—March 31)
1.9 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
Total Residual Chlorine4
17 µg/L
Daily
Grab
E
Temperature (°C)
Daily
Grab
E, U, D
Total Nitrogen (NO2 + NO3 + TKN)
Monthly
Composite
E
Total Phosphorus5
Monthly
Composite
E
Chronic Toxicity&
Quarterly
Composite
E
Conductivity
Daily
Grab
E, U, D
Chromium
51 µg/L
204 µg/L
Weekly
Composite
E
Lindane
0.01 µg/L
Weekly
Grab
E
Copper
2/Month
Composite
E, U, D
Cyanides
5 µg/L
15 µg/L
Weekly
Grab
E
Lead
26 µg/L
34 µg/L
Weekly
Composite
E
Silver
2/Month
Composite
E
Zinc
2/Month
Composite
E, U, D
Mercury&
0.012 µg/L
Weekly
Composite
E
Molybdenum
2/Month
Composite
E
Footnotes:
1 Sample Locations: E - Effluent, 1 - Influent, U - Upstream, D- Downstream. For instream
monitoring requirements, see Parts A. (- :). C.-, — / (]
2 The monthly average effluent CBOD5 and total suspended residue concentrations shall not exceed
15% of the respective influent value.
3 The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/L.
4 The daily average limit for total residual chlorine shall be 28 µg/L.
5 See Part A. 0)13 for additional nutrient monitoring information.
6 Whole effluent toxicity shall be measured by Chronic Toxicity (Ceriodaphnia) P/F at 90 %. Samples
shall be taken quarterly during the months of March, June, September and December. See Part A.
' The Division of Water Quality shall consider all cyanide concentrations reported below 10 ug/L to
be "zero" for permit -compliance purposes only.
8 The quantitation limit for mercury shall be 0.2 ug/1 (0.2 ppb). Levels reported at less than 0.2 ug/1
shall be considered zero for compliance purposes.
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 NC0024970
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — FINAL
During the period beginning on February 28, 2006 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
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Location1
Flow
64.0 MGD
Continuous
Recording
I or E
CBOD, 5-day (202C)2
April 1- October 31
4.0 mg/L
6.0 mg/L
Daily
Composite
E, I
CBOD, 5-day (20°C)2
November 1 — March 31
8.0 mg/L
12.0 mg/L
Daily
Composite
E, I
Total Suspended Residue2
15.0 mg/L
22.5 mg/L
Daily
Composite
E, I
NH3 as N (April 1 — October 31)
1.0 mg/L
Daily
Composite
E
NH3 as N (November 1—March 31)
1,9 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
Total Residual Chlorine',
17 µg/L
Daily
Grab
E
Temperature (°C)
Daily
Grab
E, U, D
Total Nitrogen (NO2 + NO3 + TKN)
Monthly
Composite
E
Total Phosphorus5
Monthly Average: 1,067.0 lbs./day
12-month Average: 534 lbs./day
Monthly
Composite
E
Chronic Toxicity6
Quarterly
Composite
E
Conductivity
Daily
Grab
E, U, D
Chromium
51 µg/L
204 µg/L
Weekly
Composite
E
Lindane
0.01 µg/L
Weekly
Grab
E
Copper
2/Month
Composite
E, U, D
Cyanide?
5 µg/L
15 µg/L
Weekly
Grab
E
Lead
26 µg/L
34 µg/L
Weekly
Composite
E
Silver
2/Month
Composite
E
Zinc
2/Month
Composite
E, U, D
Mercury5
0.012 µg/L
Weekly
Composite
E
Molybdenum
2/Month
Composite
E
Footnotes:
1 Sample Locations: E - Effluent, I - Influent, U - Upstream, D- Downstream. For instream monitoring
requirements, see Parts A. ('1 (!j1 — / U
2 The monthly average effluent 030.5 and total suspended residue concentrations shall not exceed 15% of the
respective influent value.
3 The daily average dissolved oxygen effluent concentrations shall not be less than 6.0 mg/L.
4 The daily average limit for total residual chlorine shall be 28 pg/L.
s The 12-month average limit will remain in effect until such time as the total combined discharge limit
stipulated in Part A. ( 'pcomes into effect. Once the total combined discharge limit is effective, the 12-month
average limit i 826 lbs./day for all three CMUD plants (McAlpine, Irwin and Sugar Creek WWTPs) combined.
See Part A. 0. for additional information on this limit. Part A. VA) describes the methodology for calculation
of the monthly average and 12-month limits. 'r
6 Whole effluent toxicity shall be measured by Chronic Toxicity (Ceriodaphnia) P/F at 90 %. Samples shall be
taken quarterly during the months of March, June, September and December. See Part A. (74.5
7 The Division of Water Quality shall consider all cyanide concentrations reported below 10 ug/L to be "zero" for
permit -compliance purposes only.
8 The quantitation limit for mercury shall be 0.2 ug/1 (0.2 ppb). Levels reported at less than 0.2 ug/1 shall be
considered zero for compliance purposes.
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.

(ci»
CHARLOTTE
March 20, 2002
David A. Goodrich, Supervisor
NPDES Group
Permits and Engineering Unit
Division of Water Quality
North Carolina Department of Environment
and Natural Resources
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re: NPDES Permit Modification
Permit NC0024970
CMUD McAlpine Creek WWTP
Mecklenburg County
Client -Matter No. 4010660.000632
Dear Dave:
We have reviewed the draft modification for the McAlpine and believe there are a
few changes that need to be made to make it consistent with the Settlement Agreement
between DHEC, DENR and the City, These changes are as follows:
1. The expiration date on the cover of the permit should be February 28,
2006, not February 8, 2006.
2. We believe the formula for calculating the 12-month rolling average in
Part A.(6.) is incorrect. The applicable standards are mass -based on both a monthly and
annual basis. It would appear that the definitions for "monthly average discharge" and
"average annual discharge" could be used to determine the per day discharges as required
by the permit. These definitions are found in Part II.A.5.a. and d. In the alternative, the
formulas included in the draft permits could be used provided that the monthly and
annual loadings are divided by, respectively, the number of days in the month or rolling
twelve-month period being measured. The worksheet for reporting phosphorous
discharges would also have to be modified to reflect these corrections.
With regard to the stream sampling, as discussed in the letter I sent yesterday to
Mike Myers with our comments on the draft Sugar Creek and Irwin Creek permits, we
renew our request that the stream sampling requirements for Sugar and Irwin be the same
as McAlpine's. Since the stream sampling results are to be included in the McAlpine,
any differences in each plant's requirements will make that report confusing and much
less useful as a summary report.
CHARLOTTE-MECKLENBURG UTILITIES
Wastewater Treatment Administration
5301 Closeburn Road
Charlotte, NC 28210
PH: 704/556-9397

i
In addition, can you please confirm whether or not a public notice of the proposed
permit modification has been published and when the public comment period is to expire.
Also, please confirm that a copy of the proposed modification has been sent to DHEC as
an affected state. I see by the cover letter that a copy was sent to EPA.
Finally can you please verify to whom the Notice of Intent was sent and, if sent
by certified mail or some other method that produces a signed receipt, who you have
proof received it.
If at all possible, we would like to process these changes to the modification
before next Thursday, March 28, 2002. If that cannot be done, we will have to go
through the perfunctory filing of a petition for contested case in order to protect our rights
to assure that the changes will be made. With all we have been through in reaching this
settlement, I would hate to have to go through the motions of filing a petition. However,
if the changes cannot be made before next Thursday, we will have not choice but to file.
CMUD and I await your prompt response. Please feel free to contact Barry Gullet
directly if that will expedite resolution of these issues.
Sincerely,
queline A. Jarrell, P.
vironmental Management Division Manager
cc: Douglas Bean (via electronic mail)
Barry Gullet (via electronic mail)
Jill Hickey (via facsimile)
Samuel Finklea (via electronic mail)
H. Michael Boyd (via electronic mail)
Natalie Sierra (via facsimile)
Benne C. Hutson (via electronic mail)

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
REGION 4
ATLANTA FEDERAL CENTER
61 FORSYTH STREET
ATLANTA, GEORGIA 30303-8960
MAR 12 0 2002
Mr. Dave Goodrich, Supervisor
NPDES Unit
Division of Water Quality
North Carolina Department of Environment and
Natural Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
SUBJ: NPDES Permit for CMUD McAlpine Creek WWTP
Permit No. NC0024970
Dear Mr. Goodrich:
In accordance with the EPA/NCDENR MOA, we have completed our review of the draft
permit modification referenced above. We have no comment concerning the draft permit. We
request that we be afforded an additional review opportunity only if significant changes are made
to the permit prior to issuance, or if significant comments to the permit are received. Otherwise,
please send us one copy of the final permit when issued. If you have a .y questions, please call
Ms. Dee Stewart at [phone].
Sincerely,
J. Scott Gordon, Chief
Permits, Grants and Technical Assistance Branch
Water Management Division
Internet Address (URL) • http://www.epa.gov
Recycled/Recyclable • Printed with Vegetable OH Based Inks on Recycled Paper (Minimum 30% Postconsumer)

McAlpinetMedification Question
Subject: McAlpine Modification Question
Date: Thu, 14 Mar 2002 13:48:54 -0500
From: [e-mail]
To: [e-mail]
Natalie,
I am looking at the modification for McAlpine incorporating the
requirements of the recent settlement agreement. I have a question on
Item A.(2) footnote 5. What 12 month average limit will remain in
effect until such time as the total combined discharge limit stipulated
in part A.5 comes into effect? I am not sure I understand what this
means with respect to the agreement. The A.5 language is clear, but the
footnote to me is confusing.
Thanks for helping me out. I am looking at your responses back to me on
the outstanding permits and will get in touch with you on Monday of next
week to finalize.
Thanks,
Dee
1 of 1
3/14/02 4:44 PM

Re: NC0(24970-McAlpine (revised)
Subject: Re: NC0024970-McAlpine (revised)
Date: Thu, 14 Mar 2002 16:32:37 -0500
From: "Jeff deBessonet"<[e-mail]>
To: <[e-mail]>
I SEE THE REFERENCE TO 1,067, WANT TO CONFIRM IT IS NOT A ROLLING AVERAGE TYPE LIMIT
(JUST MONTHLY AVERAGE)
WHY DOES THE PERMIT EXPIRE 2/8/06 INSTEAD OF 2/28/06??
JEFF
Thanks. Please check these issues and get back with me.
1. The 534 #/day kicks in 2/28/06 if construction is needed a Sugar/Irwin, however,
it needs to go away whenever the 826 #/day becomes effective. In theory, this would
be no later than 2/28/07 (unless an extension were granted).
2. The 1,067 #/day (monthly average, not based on a rolling average) feature is
missing, which should kick in 2/28/06 regardless of construction.
JEFF
»> Natalie Sierra <[e-mail]> 03/06/02 03:19PM »>
Jeff -
Dave asked me to send you the McAlpine mod. This is what the facility
received (and is available for public comment). Let me know if you have
any questions.
-Natalie
1 of 1 3/14/02 4:44 PM

Re: NC004470-McAlpine
}
Subject: Re: NC0024970-McAlpine
Date: Wed, 13 Mar 2002 08:28:42 -0500
From: "Jeff deBessonet"<[e-mail]>
To: <[e-mail]>
Thanks. Please check these issues and get back with me.
1. The 534 #/day kicks in 2/28/06 if construction is needed a Sugar/Irwin, however,
it needs to go away whenever the 826 #/day becomes effective. In theory, this would
be no later than 2/28/07 (unless an extension were granted).
2. The 1,067 #/day (monthly average, not based on a rolling average) feature is
missing, which should kick in 2/28/06 regardless of construction.
JEFF
»> Natalie Sierra <[e-mail]> 03/06/02 03:19PM »>
Jeff -
Dave asked me to send you the McAlpine mod. This is what the facility
received (and is available for public comment). Let me know if you have
any questions.
-Natalie
1 of 1 3/14/02 4:44 PM

M,71denbur
S
Charlotte, N.C.
AFFIDAVIT OF PUBLICATIO
NORTH CAROLINA
MECKLENBURG COUNTY
Before the undersigned, a Notary Public of Mecklenburg County,
North Carolina, duly commissioned, qualified, and authorized by
law to administer oaths, personally appeared
Shelby J. Cummings of
THE Mecklenburg TIMES, a newspaper published, issued, and
entered as second-class mail in the City of Charlotte, in said County
and State; that he/she is authorized to make this affidavit and sworn
statement; that the notice or other legal advertisement of
NOTICE OF INTENT
To Modify NPDES 1)ischirge
Permit NC0014970
a true copy of which is attached hereto, was published in THEMeek-
lenburg TIMES on the following dates:
Feb. 26, 2002
and that the said newspaper in which such notice, paper, document,
or legal advertisement was published was, at the time of each and
every such publication, a newspaper meeting 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 See-
tion 1-597 of the General Statutes of North Carolina.
This 26th day of
(Signed)
Swom to and subscribed }yEfore dfe, this
6th da -of Feb. 2002
Feb. 2002
t(k( ftYrre
Notary Public
My Commission Expires: 7 / 7' 2004
NOTICE OF INTENT.
To Modify NPDES Discharge Permit NC0024970
SUBJECT: The Division of Water Quality plans to establish a
schedule of compliance on a new total phosphorus limit in the exis-
tent NPDES Permit for the Charlotte Mecklenburg Utilities Department
(CMUD) - McAlpine Creek Wastewater Treatment Plant (NC0024970)
PURPOSE: The facility listed above discharges into McAlpine
Creek in the Catawba River basin. A compliance schedule lasting
until February 28, 2006 has been granted in order to meet a newly
imposed total phosphorus limit.
. INFORMATION: A copy of the existing NPDES permit and a map
showing the location of the discharge is available by writing or
calling:
Ms. Natalie Sierra
NC DENR-DWQ-NPDES Unit
• 1617 Mail Service Center
• Raleigh, North Carolina 27699-1617
Telephone number: [phone], extension 551
The existing permit is on file at the Division of Water Quality,
Archdale Building, 512 North Salisbury Street (Roont925), Raleigh,
North Carolina. It may be Inspected during normal office hours.
Copies of the information on file are :available upon request and
payment of the costs of copying.
99376 Feb 26