20042059 Ver 2_More Info Received_20091119

Dewberry Suite Rex woods Drive 9919.881.9939
19.881.9923 fax
Raleigh, NC 27607 www.dewberry.com
November 18, 2009
Ms. Cyndi Karoly
401 Oversight/Express Permitting Unit Supervisor
NC Division of Water Quality #&@@flWq
401/Wetlands Unit 1650 Mail Service Center Raleigh, North Carolina 27699-1650 Nov,? ° ?009
Reference: City of Raleigh
WTL4Sr 11A>FRQUAl.11y
Dunn Road Sanitary Sewer Extension ?R4I ' BRQM
DWQ Project #04-2059 V2
Dewberry Project No. 50020200
Dear Ms. Karoly:
In response to your comments dated November 9, 2009 we have provided the following responses:
1. Please provide a qualitative indirect and cumulative impact analysis for the new service areas of
the project. Please see DWQ's policy for guidance on our website at:
httl2://h2o.enr.state.nc.us/ncwetlands/documents/InterimintemalPolicyCumulativelmpact doc
Response: Please see the attached narrative titled "Qualitative Analysis of Indirect and
Cumulative Impacts. "
2. Please show the project on the Wake County bound and published Soils Surveys maps. This
should be done by drawing a line on where the proposed sewer line will be.
Response: Please find five (5) copies of the Wake County bound and published Soil Surveys
maps with the proposed sewer line shown in red.
3. Please indicate where in the easement the proposed sewer line will be located.
Response: Please find attached five (5) copies of the project plans. The plans will provide a better look at
the sewer line's location in regards to the easement. For most of the project, the sanitary sewer line will
remain centered in the easement.
4. A 40-foot construction corridor seems somewhat excessive. Please indicate why a 40-foot construction
corridor is required.
Response: Per the City of Raleigh Public Utilities Handbook, for sanitary sewer mains 18" & 24 " in
diameter a 40 feet wide permanent easement and an additional 20 feet wide temporary construction
easement are required. Due to the pipe size and bury depth, large amount of soil will be removed and
placed within the easement when excavating to place the pipe. In order to have enough room to
temporarily store the soil and have proper equipment access, this easement width is required. Where it
was possible, the easement width was reduced to avoid impacts to the buffer.
Dewberry & Davis, Inc.

Ms. Cyndi Karoly
November 18, 2009
Page 2
Please call with any questions regarding this project.
Sincerely,
Dewberry & Davis, Inc.
tin Story, E.I., LEED AP
vil Designer
Enclosures
P:\50020200\Adm\Permits\PCN Permit Application\2009.11.18 - 3rd Submittal\2009.11.19 401-DWQ Resubmittal(2).doc
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
November 9, 2009
r??t Project# 04-2059, Ver. 2
l,? ? Wake County
City of Raleigh - Public Utilities Department
219 Fayetteville Street Mall
Raleigh, NC 27602:?r,
Subject Property: City of Raleigh: Dunn Road Sewer Extension
Ut to Neuse River [030402, 27-(20.7), WSIV, NSW]
RLQUEST FOR MORE INFORMATION
Dear Sir or Madam:
On October 30, 2009, the Division of Water Quality (DWQ) received your application dated September 23,
2009, to fill or otherwise impact 0.39 acres of 404/wetlands (temporary impact), 88 linear feet of perennial
stream (temporary impact), 120 linear feet of intermittent stream (temporary impact), and 91,523 square
feet of Zone 1 Neuse River protected riparian buffers, and 94,835 square feet of Zone 2 Neuse River
protected riparian buffers to construct the proposed sewer line project at the site. The DWQ has determined
that your application was incomplete and/or provided inaccurate information as discussed below. The
DWQ will require additional information in order to process your application to impact protected wetlands
and/or streams on the subject property. Therefore, unless we receive five copies of the additional
information requested below, we will have to move toward denial of your application as required by 15A
NCAC 21-1.0506 and will place this project on hold as incomplete until we receive this additional
information. Please provide the following information so that we may continue to review your project.
Additional Information Requested:
1. Please provide a qualitative indirect and cumulative impact analysis for the new service areas of
the project. Please see DWQ's policy for guidance on our website at:
http•//h2o enr state nc.us/ncwetlands/documents/InterimintemalPolicyCumulativeImpact.doc
2. Please show the project on the Wake County bound and published Soil Survey maps. This should
be done by drawing a line where the proposed sewer line will be.
3. Please indicate where the in the easement the proposed sewer line will be located.
4. A 40-foot construction corridor seems somewhat excessive. Please indicate why a 40-foot
construction corridor is required.
Please submit this information within 30 calendar days of the date of this letter. If we do not receive this
requested information within 30 calendar days of the date of this letter, your project will be withdrawn and
you will need to reapply with a new application and a new fee.
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Location: 2321 Crabtree Blvd., Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet: http:l/h2o.enr.state.nc.us/ncwetiands/
NorthCarolina
Natura!!tf
An Equal Opportunity 1 Affirmative Action Employer
City of Raleigh
Page 2 of 2
November 9, 2009
This letter only addresses the application review and does not authorize any impacts to wetlands, waters or
protected buffers. Please be aware that any impacts requested within your application are not authorized (at
this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian McMillan at 919-733-1786 if you have
any questions regarding or would like to set up a meeting to discuss this matter.
Sinc y,
yndi Karoly, Supervisor
1 Oversight/Express Review Permitting Unit
CBK/ym
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Mary T. Brice, Dewberry & Davis, Inc., 2301 Rexwoods Drive, Suite 200, Raleigh, NC 27607-
3366
Filename: 042059Ver2CORaleighDunnRoadSewerExt(W ake)On_Hold
Qualitative Analysis of Indirect and Cumulative Impac G R @ 0 %A9
City of Raleigh: Dunn Road Sewer Extension
DWQ Project #04-2059, Ver. 2 N? I 0 ?009
Purpose of the Proiect
DENR. WATER QUALITY
WETLANDS AND STM WATER SWCH
The purpose of the Dunn Road Sewer Extension project is installation and replacement of sanitary sewer
lines in order to provide reliable sanitary sewer service to customers in the vicinity of the project and to
provide operational flexibility at the City of Raleigh's E.M. Johnson Water Treatment Plant.
The existing sanitary sewer in the project area is undersized, should the service area be built out in
accordance with current zoning. Inadequate sanitary sewer capacity can result in sanitary sewer
overflows onto land and drainageways and sanitary sewer backups onto private property. The Dunn Road
Sewer Extension project will provide reliable sanitary sewer service to customers and will protect against
sanitary sewer overflows.
Currently, wastewater from various processes at the E.M. Johnson Water Treatment Plant is discharged to
nearby waterways in accordance with NPDES Permit #N00082376 (attached). The Dunn Road Sewer
Extension project has been designed to accommodate discharge of wastewater from the water treatment
plant, if necessary, and will provide the operational flexibility at the plant necessary to comply with the
NPDES permit, in particular, Special Conditions A.(7.) and A.(8.).
Growth is not expected to be induced by the project. The project includes replacement of sanitary sewer
where it currently exists, and an extension of sanitary sewer to the water treatment plant facilities. The
project does not include extension of sanitary sewer onto undeveloped private properties; however, the
project is designed to accommodate growth that may occur based on current zoning.
It is not known if waters in the project area contain threatened or endangered aquatic species. Waters in
the project area are not impaired (303(d) listed), Class SA, or Trout waters.
Indirect Impacts of the Proiect
New development is expected in the service area in accordance with current zoning. The project is not
expected to cause an increase in the density or type of development in excess of current zoning.
• New development may result in conversion of agricultural and forested land to residential,
commercial, and industrial uses.
• New development may result in soil erosion and increased stormwater runoff.
• New development may result in a need for other services such as schools, public safety, public
health, solid waste collection, and other utilities.
• New development may result in increased automobile and/or industrial emissions.
• New development may result in increased noise levels from automobiles and/or industries.
Existing regulatory programs are in place which can address impacts from future development in the
watershed. In particular:
• Development in the watershed will continue to be restricted by the WS-IV classification of the
receiving stream.
New development could result in a loss of wetlands, but would require a permit from the
NCDENR and/or USAGE. The presence of wetlands in the service area has not been quantified.

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Qualitative Analysis of Indirect and Cumulative Impacts
City of Raleigh: Dunn Road Sewer Extension
DWQ Project #04-2059, Ver. 2
Page 2
By providing the capacity necessary to prevent sanitary sewer overflows the potential indirect and
cumulative impacts of the project are consistent with the area's water quality goals:
• Elimination of sanitary sewer overflows will improve water quality in the receiving stream.
• Elimination of sanitary sewer overflows will reduce regulatory actions against the public utility.
By providing the operational flexibility of discharging wastewater flows from the water treatment plant
into the sanitary sewer (in lieu of discharging into an unnamed tributary to the Neuse River and an
unnamed tributary to Honeycutt Creek) the potential indirect and cumulative impacts of the project are
consistent with the area's water quality goals:
• Reductions in the discharge of wastewater to the receiving streams will improve water quality in
the receiving streams.
Reductions in the discharge of wastewater to the receiving streams will assist the public utility in
compliance with NPDES Permit # N00082376.
Reductions in the discharge of wastewater to the receiving streams will improve the quality of life
for residents in the vicinity of the receiving streams.
Permit N00082376
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 Raleigh
is hereby authorized to discharge wastewater from a facility located at the
E.M. Johnson Water Treatment Plant (WTP)
10301 Falls of Neuse Road
Raleigh
Wake County
to receiving waters designated as an unnamed tributary to the Neuse River (outfall 001) and
an unnamed tributary to Honeycutt Creek - arm of Falls Lake (Outfall 002 and Outfall 003) in
the Neuse River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III, and IV hereof.
The permit shall become effective.
This permit and the authorization to discharge shall expire at midnight on February 28, 2013.
Signed this day.

Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit N00082376
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no
longer effective. Therefore, the exclusive authority to operate and discharge from this facility
arises under the permit conditions, requirements, terms, and provisions included herein.
The City of Raleigh is hereby authorized to:
1. Continue to discharge treated filter backwash water and associated wastewater from
residuals processing, which includes the following components:
? Two backwash clarifiers
? Filtrate pump station
? Flow splitter box
? Three sludge thickeners
? Parshall flume
? Polymer and caustic feed systems
? Thickened sludge pump station
(with diversion to blending tanks or sludge disposal facility)
? Four sludge blending tanks
(residuals pumped to sludge disposal facility or filter presses)
? Three belt filter presses (drainage to sanitary sewer pump station)
truck hauling and concrete pad for residuals
belt filter press washwater pumps
belt conveyors
? Twelve sand drying beds (drainage to sanitary sewer pump station)/ containment pad
? Refer to Permit No. WQ0008431 for components specific to the sludge disposal facility.
Decanted wastewater from the sludge disposal facility is directed to the sanitary sewer pump
station.
? Dechlorination and automatic pH control system
? Refer to Permit No. WQ0022036 for the bulk reclaimed water distribution program (and
associated approvals and components).
This facility is located at the E.M. Johnson Water Treatment Plant at 10301 Falls of Neuse Road
in Wake County.
2. Discharge from Outfall 001 at the location specified on the attached map into an unnamed
tributary of the Neuse River, classified as WS-IV-NSW waters in the Neuse River Basin. 001
- Discharge from overflow from the east raw water reservoir and possible discharge of
treated water/wastewater (located across Falls of the Neuse Road from the water treatment
plant).
3. Discharge from Outfalls 002 and 003 at the locations specified on the attached map into an
unnamed tributary to Honeycutt Creek (arm of Falls Lake), classified as WS-IV-NSW waters
in the Neuse River Basin. 002 - Discharge of wastewater associated with the treatment of
water for drinking purposes (main wastewater discharge), and leakage from the plant
clearwells. 003 - Discharge of stormwater and overflow from the west raw water reservoir
from the culvert directly upstream of Outfall 002
Permit N00082376
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge wastewater associated with the water treatment plant from
Outfa11001 (outfall located across Falls of the Neuse). 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 Typel Sample
Location
Flow Weekly Estimate Effluent
Total Suspended Solids 30.0 m /L 45.0 m /L Weekly Grab Effluent
Total Residual Chlorine 17 ?tg/l- 2 Weekly Grab Effluent
NH3-N (mgA) Monitor & Report Monthly Grab Effluent
TKN (mgA) Monitor & Report Monthly Grab Effluent
N02-N + N03-N (mgA) Monitor & Report Monthly Grab Effluent
TN (mgA) 3 Monitor & Report Monthly Grab Effluent
Total Monthly Flow (MG) Monitor & Report Monthly Calculated Effluent

TN Load 4 Monitor & Report
(Annual Mass Loading) 5 Monthly
Annually Calculated
Calculated Effluent
Effluent
Total Phosphorus 2.0 mg/L (Quarterly Average) 6 Monthly Grab Effluent
Total Copper Weekly Grab Effluent
Total Iron Weekly Grab Effluent
Total Manganese 7 200 ug/L Weekly Grab Effluent
Total Aluminum Quarterly Grab Effluent
Total Barium Quarterly Grab Effluent
Total Calcium Quarterly Grab Effluent
Total Lead Quarterly Grab Effluent
Total Magnesium Quarterly Grab Effluent
Total Nickel Quarterly Grab Effluent
Total Zinc Quarterly Grab Effluent
Chronic Toxicity 8 Quarterly Grab Effluent
Fecal Coliform Weekly Grab Effluent
PH 9 Weekly Grab Effluent
Permit N00082376
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Continued)
NOTES:
1. Due to the remote location of Outfall 001 and the infrequency of discharge, the City may
conduct grab samples for all parameters at Outfall 001.
2. The Division shall consider all effluent TRC values reported below 50 ug/l to be in
compliance with the permit. However, the Permittee shall continue to record and submit all
values reported by a North Carolina certified laboratory (including field certified), even if
these values fall below 50 ug/1.
3. TN means Total Nitrogen. For a given wastewater sample, TN is the sum of Total Kjeldahl
Nitrogen and Nitrate-Nitrite Nitrogen: TN = TKN + N02-N + N03-N.
4. TN Load is the mass load of TN discharged by the Permittee in a period of time. See Special
Condition A.(4.), Calculation of TN Loads.
5. Annual TN load must be reported. Annual TN load is not limited for this permit cycle. See
Special Condition A.(4.), Calculation of TN Loads.
6. The quarterly average for total phosphorus shall be the average of composite samples
collected monthly during each calendar quarter (January - March, April - June, July -
September, October - December).
7. The limit for manganese goes into effect 36 months after the effective date of the permit.
Monitoring shall continue from the effective date of the permit. See Special Condition A.(8).
8. Chronic Toxicity (Ceriodaphnia dubia) Monitoring at 90%: February, May, August, and
November [see Special Condition A.(5). Quarterly metals monitor shall coincide with
quarterly toxicity monitoring.
9. The pH shall not be less than 6.0 nor greater than 9.0 standard units.
All samples collected should be representative of the discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no discharge of waste or chemicals that do not directly result from the
responsible treatment of raw water.
Permit N00082376
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge wastewater associated with the water treatment plant from
Outfalls 002 (main wastewater outfa14. 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
Location
Flow 8.8 MGD Continuous Recording Effluent
Total Suspended Solids 30.0 m /L 45.0 m /L Weekly Composite Effluent
Total Residual Chlorine Weekly Grab Effluent
NH3-N (mgA) Monitor & Report Monthly Composite Effluent
TKN (mgA) Monitor & Report Monthly Composite Effluent
N02-N + N03-N (mgA) Monitor & Report Monthly Composite Effluent
TN (mgA) 2 Monitor & Report Monthly Composite Effluent
Total Monthly Flow (MG) Monitor & Report Monthly Calculated Effluent

TN Load 3 Monitor & Report
(Annual Mass Loading) 4 Monthly
Annually Calculated
Calculated Effluent
Effluent
Total Phosphorus 2.0 mg/L (Quarterly Average) 5 Monthly Composite Effluent
Total Copper Weekly Composite Effluent
Total Iron Weekly Composite Effluent
Total Manganese 6 200 ug/L Weekly Composite Effluent
Total Aluminum Quarter) Composite Effluent
Total Barium Quarter) Composite Effluent
Total Calcium Quarter) Composite Effluent
Total Lead Quarter) Composite Effluent
Total Magnesium Quarter) Composite Effluent
Total Nickel Quarter) Composite Effluent
Total Zinc Quarter) Composite Effluent
Chronic Toxicity 7 Quarterly Composite Effluent
Fecal Coliform Weekly Grab Effluent
PH 8 Weekly Grab Effluent
Permit N00082376
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Continued)
NOTES:
1. The Division shall consider all effluent TRC values reported below 50 ug/l to be in
compliance with the permit. However, the Permittee shall continue to record and submit all
values reported by a North Carolina certified laboratory (including field certified), even if
these values fall below 50 ug/1.
2. TN means Total Nitrogen. For a given wastewater sample, TN is the sum of Total Kjeldahl
Nitrogen and Nitrate-Nitrite Nitrogen: TN = TKN + N02-N + N03-N.
3. TN Load is the mass load of TN discharged by the Permittee in a period of time. See Special
Condition A.(4.), Calculation of TN Loads.
4. Annual TN load must be reported. Annual TN load is not limited for this permit cycle. See
Special Condition A.(4.), Calculation of TN Loads.
5. The quarterly average for total phosphorus shall be the average of composite samples
collected monthly during each calendar quarter (January - March, April - June, July -
September, October - December).
6. The limit for manganese goes into effect 36 months after the effective date of the permit.
Monitoring shall continue from the effective date of the permit. See Special Condition A.(8).
7. Chronic Toxicity (Ceriodaphnia dubia) Monitoring at 90%: February, May, August, and
November [see Special Condition A.(5). Quarterly metals monitor shall coincide with
quarterly toxicity monitoring.
8. The pH shall not be less than 6.0 nor greater than 9.0 standard units.
All samples collected should be representative of the discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no discharge of waste or chemicals that do not directly result from the
responsible treatment of raw water.
Permit N00082376
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge wastewater associated with overflow from the west raw
water terminal reservoir from Outfa11003 (drainage from the culvert above Outfall 002). Such
discharges shall be limited and monitored by the Permittee as specified below only for water
associated with overflow of the west raw water terminal reservoir. Stormwater discharged
through Outfall 003 will continue to be permitted and regulated by NPDES Stormwater
Discharge Permit NCS000245
Effluent Characteristics Limits Monitoring Requirements

Monthly
Average Weekly
Average Daily
Maximum Measurement
Frequency Sample Type Sample
Location
Flow Weekly Estimate Effluent
Total Suspended Solids Monthly Grab Effluent
Total Residual Chlorine Monthly Grab Effluent
NH3-N (mgll) Monthly Grab Effluent
TN (mg/l) Monthly Grab Effluent
Total Phosphorus 2.0 mg / L (Quarterly Average) 1 Monthly Grab Effluent
Total Copper Monthly Composite Effluent
Total Iron Monthly Composite Effluent
Total Man anese 2 200 ug/ L Monthly Composite Effluent
Total Aluminum Quarterly Composite Effluent
Total Barium Quarterly Composite Effluent
Total Calcium Quarterly Composite Effluent
Total Lead Quarterly Composite Effluent
Total Magnesium Quarterly Composite Effluent
Total Nickel Quarterly Composite Effluent
Total Zinc Quarterly Composite Effluent
PH 3 Monthly Grab Effluent
NOTES:
1. The quarterly average for total phosphorus shall be the average of composite samples
collected monthly during each calendar quarter (January - March, April - June, July -
September, October - December).
2. The limit for manganese goes into effect 36 months after the effective date of the permit.
Monitoring shall continue from the effective date of the permit. See Special Condition A.(8).
3. The pH shall not be less than 6.0 nor greater than 9.0 standard units.
All samples collected should be representative of the discharge.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no discharge of waste or chemicals that do not directly result from the
responsible treatment of raw water.
Permit N00082376
A.(4.) CALCULATION OF TOTAL NITROGEN LOADS
a. The Permittee shall calculate monthly and annual TN Loads as follows:
L Monthly TN Load (lb/mo) = TN x TMF x 8.34
where:
TN = the average Total Nitrogen concentration (mg/L) of the composite samples
collected during the month
TMF = the Total Monthly Flow of wastewater discharged during the month (MG/mo)
8.34 = conversion factor, from (mg/L x MG) to pounds
ii. Annual TN Load (lb/yr) = Sum of the 12 Monthly TN Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen results (mg/L and lb/mo) in the
discharge monitoring report for that month and shall report each year's annual results
(lb/yr) in the December report for that year.
A.(5.) CHRONIC TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct chronic toxicity tests using test procedures outlined in the "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure", Revised February 1998 or
subsequent versions.
The effluent concentration defined as the Instream Waste Concentration (IWC) shall be 90%.
The chronic value 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
described by the document referenced above.
The permit holder shall perform at a minimum, guarterlu monitoring using these procedures to
establish compliance with the permit condition. 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.
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 THP3B. Additionally, DWQ Form AT-3 (original) is to be sent to the
following address:
Attention: Environmental Sciences Section
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section
no later than 30 days after the end of the reporting period for which the report is made.
Permit N00082376
A.(5.) CHRONIC TOXICITY MONITORING (QUARTERLY) - Continued
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 Section 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.
A.(6.) ADDITIONAL STIPULATIONS REGARDING DISCHARGE MONITORING
REPORT (DMR) FORMS
1. The City must submit a DMR form for Outfall 001 and Outfall 002, whether a discharge
occurs or does not occur. If there is no discharge from Outfall 001 or from Outfall 002
during a month, the monthly report must be submitted with the notation "No Flow".
2. For Outfall 003, the City should state whether a discharge has occurred from the
overflow of the raw water reservoir (this may be submitted as a notation on the DMR or
as an appendix to the DMR).
A.(7.) ADDITIONAL STIPULATIONS REGARDING DISCHARGE TIMING
In order to minimize effects of future nutrient discharges on algal blooms, The City shall make
all reasonable efforts so that any future discharges occur during the months of December,
January, February, or March. If Public Water Supply requires discharge any other time of the
year, the facility must comply with the requirements of PWS.
Permit NC0082376
A.(8) Manganese Limit Compliance Schedule
The limit for Total manganese will not become effective for a period of 36 months after the
permit effective date. The facility shall monitor and report manganese concentrations during
this time at the intervals shown on EFFLUENT LIMITATIONS AND MONITORING
REQUIREMENTS A. (1), A. (2) and A. (3) during discharge only. The 36 month compliance
schedule is intended to allow the City time to evaluate alternative discharge options or
technology, obtain funding, design, procure and install facilities.
The following compliance schedule has been agreed upon based on negotiations between the
City Public Utilities Department and the Division of Water Quality. The City shall report to the
NPDES Program every six months regarding the status of the project. Activities may run
concurrently:
Activity
Alternatives Evaluation:
Capital Funding Request:
Start Date Completion Time
Permit Effective Date 12 months
Within 6 months of 6 months
Permit Effective Date (Concurrent with
Alternatives
Evaluation)
Engineering Design:
Public Water Supply/ DWQ Permitting:
Construction:
Completion of Testing 9 months
Completion of Design 3 months
Issuance of PWS Permit 12 months
Total Compliance Schedule: 36 months
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