NC0082949_Permit Issuance_20091102

NPDES DOCIMENT SCANNING COVER SHEET
NPDES Permit:
NC0082949
Denton WTP
Document
Type:
ermit Issuance \
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Compliance
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
November 2, 2009
'Miss document is printed on reuoae paper - ignore any
content on the reiirerise amide

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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 2, 2009
Mr. F. E. Isenhour! Jr., Town Manager
Town of Denton
P. O. Box 306 ',
Denton, NC 27239
Subject: Issuance of NPDES Permit NC0082949
Town of Denton WTP
Davidson County
Dear Mr. Isenhour:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we ae forwarding the attached NPDES discharge permit. This permit is issued pursuant
to the requirement of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between North Carolina and the U.S. Environmental Protection Agency dated May 9, 1994 (or as
subsequently amended).
The terms included in this final permit are considerably different from those found in draft permit sent to
.you on April 22, 2009. Since that time, this office has reevaluated its guidance for the permitting of
wastewater discharges from conventional water treatment plants. The results of that reevaluation are
included in the permit. While some parameters have been removed from the list of those to be
monitored and others have been added, the overall effect of these changes is believed to impose less of a
regulatory burden to the permittee. We would like to thank Ms. Tammie Melton of your staff for her
assistance and persistence during the permitting process.
The changes between this final permit and the original draft were described in an October 15, 2009 e-
mail from Bob Sledge of our staff to Ms. Melton. Changes in this final version include:
• The flow limit has been removed. The monitoring requirement for flow has been changed from
weekly, instantaneous measurement to continuous flow monitoring, based upon a more complete
understanding of the WTP's operations. However, the requirement for continuous flow monitoring
of the effluent will not become effective until March 1, 2011. This should allow the Town time for
planning, budgeting and installation of an adequate flow measurement device.
• Monitoring for Calcium and Magnesium have been eliminated from the permit. Monitoring for
ammonia nitrogen has been removed because the WTP does not use chloramines.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N.Salisbury Si. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service:1-877-623.6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
one
NthCarolina •
75aturallj/

Mr. F. E. Isenhour, Jr.
NC0082949 Permit Renewal
p. 2
• Monitoring for Turbidity has been reestablished as a term of the permit, but monitoring of the
effluent (as opposed to instream monitoring) is now to be performed.
• Monitoring for most constituent parameters has been reduced to quarterly.
• Quarterly monitoring for Total Nitrogen and Total Phosphorous have been added to the permit.
• Footnote 3 from the draft permit has been removed. There is no explicit provision within this permit
to have monitoring for particular parameters reduced or removed during the life of the permit based
upon submittal of data from the discharge. Such modification may be requested, but would be
deemed a major modification of the permit and subject to (currently) a $260.00 modification fee.
Otherwise, monitoring frequencies shall remain the same through the full term of the permit. At the
time of the next permit renewal, monitoring parameters, frequencies and limits could be changed
(added, reduced or eliminated) based upon results of sampling during this permit cycle.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless
such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Quality or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or
Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Bob Sledge at telephone number (919)
807-6398 or via e-mail at [e-mail].
Sincerely
e). ` Coleen H. Sullins
cc: Central Files
NPDES Unit
ec: Winston-Salem Regional Office/Surface Water Protection Section
Aquatic Toxicology Unit
Technical Assistance and Certification Unit

Permit NC0082949
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 provisions 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 Town of Denton
is hereby authorized to discharge wastewater from a facility located at
Denton Water Treatment Plant
3049 Bringle Ferry Road
Davidson County
to receiving waters designated as an unnamed tributary to Yadkin River in the Yadkin -Pee Dee 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 December 1, 2009.
This permit and authorization to discharge shall expire at midnight on January 31, 2014.
Signed this day November 2, 2009.
oleen H. Sullins, Director
ivision of Water Quality
By Authority of the Environmental Management Commission

Permit NC0082949
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 Town of Denton
is hereby authorized to:
1. Continue operation of holding and decant lagoons, and dechlorination to treat existing filter
backwash and basin wash water at the Denton Water Treatment Plant (conventional facility,
surface water intake).
This facility is located at 3049 Bringle Ferry Road, northwest of High Rock in Davidson
County, and
2. Discharge from said treatment works at the location specified on the attached map through
outfall 001 into an unnamed tributary to the Yadkin River, which is classified WS-IV - B - CA
water in the Yadkin -Pee Dee River Basin.

Permit NC0O82949
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Permitted Plow: N/A
NC0082949

Permit NC0082949
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUENT
CHARACTERISTIC ..
' . LIMITS
. - MONITORING REQUIREMENTS
-;.
•:,Average
-Monthly
Daily
Maximum . ,
Measurement :.
.:. 1Feequency , .
Sample Type
•Sample Location
Flow
Weekly
Instantaneous'
Effluent
Flow
Continuous'
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mglL
2/Month
Grab
Effluent
Total Residual Chlorine2
17 pglL
2/Month
Grab
Effluent
pH3
2/Month
Grab
,
Effluent
Turbidity
2/Month
Grab
Effluent
Aluminum
Quarterly4
Grab
Effluent
Manganese
Quarterly4
Grab
Effluent
Fluoride
Quarterly4
Grab
Effluent
Total Zinc
Quarterly4
Grab
Effluent
Total Copper
Quarterly4
Grab
Effluent
Total Iron
Quarterly4
Grab
Effluent
Total Nitrogen
Quarterly4
Grab
Effluent
Total Phosphorous
Quarterly4
Grab
Effluent
Whole Effluent Toxicity5
'Quarterly
Grab
Effluent
Footnotes:
1. The requirement for continuous flow monitoring will become effective on March 1, 2011.
Until that date, flow monitoring shall be conducted on a weekly basis, using instantaneous
sampling methods.
2. The Division shall consider all effluent TRC values reported below 50 µg/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
µg/L.
3. The pH shall not be less than 6.0 standard units, nor greater than 9.0 standard units.
4. Monitoring should be performed in conjunction with toxicity testing.
5. See Condition A. (2.) for toxicity testing requirements. Toxicity sampling should coincide with
sampling for parameters covered by footnote 4.
All samples collected should be of a representative discharge.
There shall be no floating solids or foam in other than trace amounts.

Permit N00082949
A. (2.) CHRONIC TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions.
The effluent concentration defined as treatment two in the procedure document is 90 %. The testing
shall be performed as a Ceriodaphnia dubia 7day pass/fail test. 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 month in which it was performed, using the parameter
code TGP3B. Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 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.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. 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, then
monthly monitoring will begin immediately. Upon submission of a valid test, this monthly test
requirement will revert to quarterly in the months specified above.
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.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT
Forms submitted.
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.

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Sledge, Bob ,,ei.t-G ,:mod ..., I . /,.,,,/ ,,,/,0- I-W.,
From: Sledge, Bob r h,e;,,le,h, f,:: oz/o
Sent: Thursday, October 15, 2009 7:45 AM J �J
To:'[e-mail]' JJJh���
Subject: Denton WTP NPDES Permit Renewal
Attachments: Draft Conventional WTP Monitoring.pdf; DRAFT Alternate limits page.pdf
Hi Ms. Melton,
I'm sorry it's taken so long to bring about more movement on the issuance of this permit. There has been a good deal of
reevaluation of our current permitting strategy for WTPs over the past few months. Those who have conducted the
review will soon issue a modified strategy to our staff for development of new permits. Because of the incomplete
status of some of the permit renewals I'm handling, I've been authorized to offer the terms of the modified strategy to
those permittees. While there may be parts of this strategy that some people will remain dissatisfied with, I believe that
overall, it is an irnprovement from what we were using in the past.
Please be advised that for the combined sake of consistency and management of the workload in this office, I can offer
you essentially the terms you saw in the draft permit, or those noted within this draft version of a modified permitting
strategy for conventional water treatment plant discharges. Changes within the new strategy include:
The new strategy contains no flow limit. However, flow -based monitoring requirements and limits will be determined
through reexamination of flow data already provided.
Monitoring for most constituent parameters will be quarterly.
Monitoring requirements for Calcium and Magnesium have been eliminated.•
Turbidity is reestablished as a monitored parameter (as it is in the current permit). E -17- n f ; -
There is no explicit provision under this strategy to have monitoring for particular parameters reduced or removed
during the life of the permit based upon submittal of data from the discharge. Such modification may be requested, but
would be deemed a major modification of the permit and subject to a $260.00 modification fee. Otherwise, monitoring
frequencies shall remain the same through the full term of the permit. At the time of the next permit renewal,
monitoring parameters, frequencies and limits could be changed (added, reduced or eliminated) based upon results of
sampling during this permit cycle.
A copy of a proposed monitoring and limits page for the permit is attached. Please note for your particular permit that
effluent monitoring for Total Nitrogen and Total Phosphorous have been added. These parameters were not included
in the draft permit based upon review of submitted data. Our subsequent conversations and additional information you
have provided regarding flow would require monitoring for these parameters to be included in either version you would
choose. Monitoring for ammonia nitrogen has been removed because your WTP does not use chloramines.
Under either version, the flow limit will be removed. However, the requirement for continuous flow monitoring will
remain. To allow you time to budget, plan, and install an adequate flow meter, this requirement will not take effect
until March 1, 2011.
It would appear to me that the new strategy option would be the better deal for most WTPs. If you would like to talk
about it, please give me a call or reply to this e-mail. I will be in the office until 11:30am this morning and until 2:30pm
tomorrow (Friday).
Thank you for your patience.
1

A7A
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
MEMORANDUM
To:
From:
April 22, 2009
Lee Spencer
NC DENR / DEH / Regional Engineer
Winston-Salem Regional Office
Bob Sledge
NPDES Unit
Uh
RECEIVED
N.C. Dect. o° ENR
Dee Freeman
Secretary
APR 2 1 2009
Winston-Salem
Regional Office
RECEIVED
JUL 2 3 2009
DENR - WATER QUALITY
POINT SOURCE BRANCH
Please indicate below your agency's position or viewpoint on the draft permit and return this form by
June 1, 2009. If you have any questions on the draft permit, please contact me at [phone] or via
e-mail at [e-mail].
Subject: Review of Draft NPDES Permit NC0082949
Town of Denton WTP
Davidson County
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained properly.
the stated effluent limits are met prior to discharge, and the discharge does not contravene the
designated water quality standards.
7tConcurs with issuance of the above permit, provided the following conditions are met:
St 1 `r7-04 cam/ z- 41 / iEitio
Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed
/gi
Date: 7 2 t7 c
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
NorthCarohna
Naturally

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Environmental Health
Beverly Eaves Perdue Terry L. Pierce Dee Freeman
Governor Director Secretary
July 21, 2009
Memorandum
To: Bob Sledge, Environmental Engineer
NPDES Unit
From: Lee G. Spencer, Regional Engineer
Winston-Salem Regional Office
Public Water Supply Section, DEH, DENR
Re: NPDES Permit Numbers: NC0082949, NC0084212, NC00844252
Denton WTP, Davie County -Sparks Road WTP, Davidson Water, Inc. WTP
First of all, I want toJapologize for the late response on these NPDES draft permits. Even though we have
discussed my concerns via phone conversation, I should have provided you a written response before now.
Tom Belnick and I also discussed my concerns via a phone conversation on June 19, 2009.
As you know, my primary concerns are the proposed monitoring changes for these Water Treatment Plant
(WTP) discharges. If there are true environmental concerns associated with these longstanding discharges, then
certainly the concerns should be addressed. However, especially in view of current economic difficulties for
most local governments, added monitoring requirements, without sound justification, seems inappropriate.
Many of the added constituents proposed for monitoring should not be a significant presence in the WTP
discharges. These appear to include: calcium, magnesium, fluoride, copper, zinc, and ammonia nitrogen.
Corrosion inhibitors, fluoridation, and chloramination are all introduced after filtration at a WTP. Therefore, it
is very unlikely that associated contaminants would ever be in backwash water, or settled water sludge.
Additionally, I wouldlike to see Whole Effluent Toxicity monitoring quickly removed from the monitoring
requirements, if no problems are observed.
It seems strange to me that monitoring requirements for Settleable Solids and Turbidity have been removed
from these permits. These should be the main constituents in conventional WTP discharges, and permittees
need to be aware to keep these contaminants to a minimum in their discharges.
Thanks for allowing me the opportunity to comment on these draft permits.
Public Water Supply Section — Jessica G. Miles, Chief
Winston-Salem Regional Office
585 Waughtown Street, Winston-Salem, North Carolina 27107-2241
Phone: [phone] FAX: [phone] Internet: ncdrinkingwater.state.nc.us
An Equal opportunity 1 Affirmative Action Employer
No Carolina
atura!!y

Winston-Salem Journal
Advertising Affidavit
NCDENR/DWQ/SURFACE WATER PROTECTION
ATTN: JOVONAH D. WEEDEN
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
Date
Category
Description
04/24/2009
Legal Notices
PUBLIC NOTICE North Carolina Environmeri
Winston-Salem Journal
P.O Box 3159
Winston-Salem, NC 27102
RCEIVE
Ili
APR 2 8 2009
waER fluffCH FNR •
U��E B�Cost
��to soTotal
417.83
Account Number
3425332
Date
2 x 61 L
4, 2009
PUBLIC NOTICE
North Carolina Environmental
Management Commission/HPDES Unit
1617 Mali Service Center
Raleigh NC 2769%3617
Notice of Intent to Issue a
NPDES Wastewater Permit
The North Carolina Environmental Management
Commission proposes to issue a NPDES wastewater
discharge permit to the person(s) listed below.
Written comments regarding the proposed permit
will be accepted until 30 days after the publish date
of this notice. The Director of the NC Division of
Water Quality (DWQ) may hold a public hearing
should there be a significant degree of public inter-
est. Please mall comments and/or Information re-
quests to DWQ at the above address. Interested
persons may visit the DWQ at 512 N. Salisbury
Street, Raleigh, NC to review information on file.
Additional Information on NPDES permits and thls
notice may be found on our webslte: www.ncwater-
quality.org, or by calling [phone]-
Alcatel-Lucent USA requested renewal of permit
NC0080853 for Salem Business Park [gw remedla-
tion] In Forsyth County. This facility discharges
remediated groundwater to Salem Creek In the
Yadkin -Pee Dee River Basin. Currently total sus-
pended solids and tetrachloroethene are water
quality limited.
The Davie County Water System requested renewal
of permit NC0024872 for Cooleemee WWTP In Davie
County; this permitted discharge Is treated munlci-
pal wastewater to South Yadkin River, Yadkin River
Basin.
The City of Lexington requested renewal of permit
NC0055786 for Lexington Regional WWTP in David-
son County; this permitted discharge Is treated mu-
nicipal wastewater to Abbotts Creek, Yadkin River
Basin.
The City of Thomasville requested renewal of per-
mit NC0024112 for Hamby Creek WWTP In Davidson
County; al w) permitted
mu-
nicipal wastewater toHamby eek, Yadkin River
Basin.
The Town of Denton requested renewal of NPDES
permit NC0082949 for the Denton Water Treatment
Plant in Davidson County; this permitted discharge
Is treated filter backwash wastewater to an un-
named tributary to the Yadkin River in the Yadkln-
Pee Dee River Basin.
WSJ: AprlI24, 2009
Media General Operations, Inc.
Publisher of the
Winston-Salem Journal
Forsyth County
Before the undersigned, a Notary Public of Forsyth County, North Carolina, duly
commissioned, qualified, and authorized by law to administer oaths, personally appeared
D.H. Stanfield, who by being duly sworn deposes and says: that he is Controller of the
Winston-Salem Journal, engaged in the publishing of a newspaper known as Winston-Salem
Journal, published, issued and entered as second class mail in the City of Winston-Salem, in
said County and State: that he is authorized to make this affidavit and sworn statement: that
the notice or other legal advertisement, a true copy of which is attached hereto, was
published in the Winston-Salem Journal on the following dates:
04/24/2009
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
the requirements and qualifications of Section 1-597 of the General Statutes of North
Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General
Statutes of North Carolina.
This 24th day of April, 2009
(signature of person mak davit)
Sworn to and subscribed before me, this 24th day of April, 2009
My Commission expires
2 t!O
(
(
ary RJbl:
KIMALEY JOHNSON
NOTARY PUBLIC
FORSYTH COUNTY
STATE OF NORTH CAR INA
MY COMMISSION EXPIRE
r
THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU

, 11
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7.--r
JUL 2 4 2008
i I
DENR YiATER DUALITY I L..
TOWN OF DENTON--------PC2:J.:71r7CE.
July 22, 2008
North Carolina Department of
Environment and Natural Resources
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re: Renewal NPDES Permit NC0082949
Denton WTP
Davidson County
Sirs;
Please find the Town of Denton's NPDES Permit Application.
Should there be additional questions please contact this office at your convenience.
Sincerely,
F.E. Isenhour, Jr.
Town Manager
201 W. Salisbury Street
P.O. Box 306
Denton, N.C. 27239
Phone: [phone]
Fax: [phone]

7). Describe the treatment process for the raw water:
We take in water from thc Yadkin River, below thc 'fucker "Town Dam. (The water
quality is forever changing) It is pumped from the raw water pump station to the water
treatment plant through the raw water transmission line. The raw water line first comes
through the fence surrounding the plant and at this point we add carbon if it is needed,
(approx. 3-4 months out of a ycar) from here, it goes to thc chemical fccd room where the
addition of Pre caustic (25%), Alum (26.5%), & KMNO4 are added, before it passes
through the inline flash mixer. From the chemical feed room it goes to the fllockulators
where most of the mixing & contact time occurs, from there the water goes into the
settling basins; this is whcre most of the solids fall out. From thc basins, the water goes to
the filters, and is hit with chlorine on top of the filters (due to the formation of THM's &
HAA5's),' the water then passes through the filters and this takes out the liner partials that
didn't settle out in the basins. The water comes out of the individual filters to the
combined filter effluent pipe; it is at this point the post chemicals arc added, including
chlorine, post caustic (25%), fluoride, & phosphate. From the injection point of the post
chemicals, the water then goes to the clear well, from there to the wet well under the
pumps, that pump the water to Town. This process is constantly monitored.
8). Describe the wastewater & treatment process for wastewater
generated by the facility:
The generated wastes from the plant include;
Filter washes ---they are dependant on the solids loading and % run of designed capacity
of the filtrs, a). Washes occur approx. every 96 hrs or less (avg. of 65 hrs), b). Also
dependent on loss of head (6.5'). c). Or turbidity of in excess of 0.250 NTU's. (These are
the SOP guidelines for our plant) See backwash flow chart.
Rewash ---Upon start up of the plant the rewash water is sent to lagoons.
Basin washing ---routine washing of the basins for solids removal & maintenance of the
equipment that is under water, occurs every 3months. (Calculated on working depth of
basins, findings arc @ 19.1875' x 18.6' x 14' x 7.48 = 37,373 gals per basin x 2 = 74,746
gals or (0.0747 MGD) every 3 months or (0.2990 MGD) yearly.
Drains ---we have drains that empty into the waste line going to the lagoon, this is
primarily just wash down water, and sample sink water.
a). 2 in the chemical feed room.
b). 1 sink in the lab.
I have provided a schematic showing all of the related items. (Next Sheet)
Before filter washes we add de-clor tabs to the manhole. (Shown on schematic)
The amounts of de-clor tabs added vary on amount of water treated, (winter & summer
demand) and of course the amount of chlorine being added to the treatment process its
self. We do not have to add them for basin washing, because there is no chlorine present
at this stage of the process.

A
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Along with the addition of the de-clor tabs @ filter washes, the waste goes to the settling
lagoons, and after the solids settle out we decant the supernate (clear water) from atop of
the alum sludge lagoons to the unnamed tributary as stated in the permit.
11). Backwash or reject flow in MGD
Backwash flow is dependent on demand, and varies from winter to summer.
Based on data from the last 1 % years.
Approx backwash flow per day is... 0.00172 MGD
2007
January
;.
1 February
March
April
May
June
iJuIy
!August
September
October
November
:December!
2008
January
February
;March
April
May
'June
Backwash water used for avg. on discharge permitt
Monthly avg. in MGD
0.0354
0.0495
0.0319
0.0462
0.0705
0.1185
0.0909
0.0746
0.0581
0.0389
0.0415
0.0552
0.0403
0.0351
0.0324
0.0309
0.0423
0.0372
!Total: j
0.9294
0.9294 Avg MG/ Month _ 1
months = .0516 monthly avg.= Avg days in Month 30 =
0.00172 Avg. daily MGD
12). Name of receiving stream(s) & Map
(Next sheet)

15). Additional Information:
*** Provide a schematic of Mow through the facility, include flow volumes at all points in the
treatment process, and point of addition of chemicals.
A schematic has been provided in answer to question 8), which has all information requested.
Flow volumes have been answered previously, as well as the location of & points of addition of
chemicals. (See attached sheets)
***Solids Handling Plan
Our solids handling Plan includes:
'l'he solids that go to thc lagoons during filter backwash, basin cleaning, rewash of filters, arc
allowed to settle and the supernate is then discharged into the unnamed tributary to the Yadkin
River. When the receiving lagoon has become full of solids it is taken out of service and cleaned
by means of a long ann back hoe. The solids materials are then put into the earthen bermed area
adjacent to lagoons, in addition all surface runoff from sludge and rainfall is contained within the
bermed area and drains into the two alum sludge lagoons. Once the sludge dries, a TCLP is
performed by a certified lab to verify the quality of the sludge. Once reviewed by Davidson
County Land fill management, it is then hauled by contract to the Davidson County Landfill.
And thc process is repeated as needed for the continual removal of solids to comply with our
discharge permit.

FACT SHEET FOR EXPEDITED PERMIT RENEWALS
Basic Information to determine potential for expedited permit renewal
Reviewer/Date
%e qiq- 5- O dJ
Permit Number
N d od c'a 7'/7
Facility Name
To Gat% o/- ,D EMV LI
Basin Name/Sub-basin number
0 3- 0 7 -O 9
_
Receiving Stream
Vi ' Y D k 10
Stream Classification in Permit
W S -1 V •- a -- C 4
Does permit need NH3 limits?
,-&0
Does permit need TRC limits?
Does permit have toxicity testing?
"'YU ae
Does permit have Special Conditions?
zyk,('
Does permit have instream monitoring?
Yt•U
Is the stream impaired (on 303(d) list)?
Any obvious compliance concerns?
"'Y\--L7
Any permit mods since last permit?
Existing expiration date
! -3/ - 0 GI
New expiration date
/ -3 1 - / 1-1
New permit effective date
Miscellaneous Comments
•
"r1,14.0 kiT/
- La.tA)_*fiakktt4
si24\x-0 tz) D
YES ✓ This is a SIMPLE EXPEDITED permit renewal (administrative
renewal with no changes, or only minor changes such as TRC, NH3,
name/ownership changes). Include conventional WTPs in this group.
YES_ This is a MORE COMPLEX EXPEDITED permit renewal (includes
Special Conditions (such as EAA, Wastewater Management Plan), 303(d)
listed, toxicity testing,instream monitoring,compliance concerns,
Phased
limits). Basin Coordinator to make case -by -case decision.
YES_ This permit CANNOT BE EXPEDITED for one of the following reason
s:
• Major Facility (municipal/industrial)
• Minor Municipals with pretreatment program
• Minor Industrials subject to Fed Effluent Guidelines (lb/day limits for BOD, TSS,
etc)
• Limits based on reasonable potential analysis (metals, GW remediation organics)
• Permitted flow > 0.5 MGD (requires full Fact Sheet)
• Permits determined by Basin Coordinator to be outside expedited process
TB Version 8/18/2006 (NPDES Server/Current Versions/Expedited Fact Sheet)