WQ0001240_Permit Application_19930720

r
` DIVISION OF ENVIRONMENTAL MANAGEMENT
GROUNDWATER SECTION
July 20, 1993.�"
5. JUL ' 2n.1993 .
MEMORANDUM ENV. MANAGEMENT-
TO • Carolyn McCaskill FAYETTEVILLE REG. OFFICE
THROUGH: Bob Cheek
FROM: Jack Floy
SUBJECT: Request for Permit Amendment
Town of Troy
Sludge Storage Proposal
Montgomery County
WQ0001240/GW9109
(Michael Allen: DEM ARG Review,Engineeir)
The Groundwater Section has reviewed'the subject permit
application to store sludge in a'portion of `the primary lagoon.
The lagoon is part of the wastewater treatment process and has
sufficient capacity to store-act'vated'.sludge. This scenario is
being proposed to allow the, town time"' o construct appropriate
sludge digestion facilities. The sludge will ultimately be
digested and land applied. Therefore the Groundwater Section
does not object -to this amendment request.
If there are any questions,''please let me know.
BC/JF:ja/93109.
cc:, s� frm ales
Central Files
Permit Files

DIVISION OF ENVIRONMENTAL MANAGEMENT
July- 13, 1993
M E M O R A N_D.0 M
TO: Jack."Floyd, Groundwater Section
Raleigh Central Office
.FROM: Kerr T. Stevens,. Regional Supervisor
Fayetteville Regional Office
SUBJECT: Permit Amendment
Lagoon Sludge Storage
WQ0001240 GW,93109'
Montgomery County.
The subject permit amendment application has been reviewed by
the FRO Groundwater Section. There are no additional comments.
The Fayetteville Regional Office Groundwater. Section
recommends approval of the amendment request. No. groundwater'
monitoring is -needed at the present time.
If you have any questions, `please contact Michael" Dauterman or
Jim Bales, L.G. at'[phone].
KTS/MTD/mtd

DIVISION OF ENVIRONMENTAL MANAGEMENT
GROUNDWATER SECTION
MEK)RANDUM kil ILI
s
�,�, ,dole- ? JJN 14 1993 }
TO: s�
DATE: /0 �,z e 1943
ENV. MANAGEMENT
FYETTEVILIE REQ oma
FROM: Jack Floyd
SUBJECT: Application for ✓ MMWAL/ADEMNENr -of Permit No.
NEW PERMIT - ..
Facility Name:
County: cyls::6 ow►cr�/
Type of -Project: Sldce �,�oe-cLce Ia�aS.n
Central Office -Contact: OEC1C_ F(C VA
Applicable 'Permit Numbers: WQ r)()r) I ZL( a GK .9 3 ) a 9
DEH AC
EPA'
The Groundwater Section has received'a.copy of the above referenced
permit application. A copy ofthe application package -is attached.
The Groundwater Section has received a,copy of the above referenced
,permit application, which has been sent to the regional office crater
quality ,supervisor. If a copy has not been sent to the regional
office please let me know.
Please review the application materials for ;caiipleteness.and submit
any request for additional information to the -central office contact on-,.
or before A copy of the formal request for
additional information will be forwarded to you.
If you do not require any additional information to complete your review,
please provide your f inal comments by t% /u .2
If you_have any questions, please let me know as soon as possible.

Central Caroling Vim gineerin59 PA
POST OFFICE BOX 1706
SANFORD, NORTH CAROLINA 27330
April 5, 1993
NC Department of Environmental Management
Water Quality Section -.Permits & Engineering
Attn: Carolyn McCaskill
PO Box 29535
Raleigh, NC 27626-0535
Re: Town of Troy
Request for Amendment to Land Application Permit IWQ0001240
Carolyn:
PHONE: [phone]
As discussed in our phone conversation, the Town of Troy is respectfully
requesting an amendment to its Land Application Permit #WQ0001240 dated February
10, 1992, to include utilizing the current Primary'Lagoon for temporary sludge
storage in order to facilitate the Land Application Program due to the following
Plant conditions:'
1. There is currently no sludge storage capability at the Plant and the
drying beds available for sludge wasting have approximately one third the
area required to properly operate an Activated Sludge Plant of this size.
Further aggravating this situation is the fact that during wet weather,
the drying beds are rendered essentially inoperable. When this occurs
there is no way to remove sludge from the treatment process.
2. The Town has been forced to seek alternative sludge storage capacity by
wasting sludge into the ten million gallon Primary Lagoon which was
previously used for primary treatment prior to construction of their
Activated Sludge Plant.
3. The Town was granted this operational variance by DEM on a case by case
basis when the Plant's ability to treat effluent to the permitted limits
was in jeopardy.
4. The Primary Lagoon has been in use since 1968. It was constructed in clay
soil with Denson's Creek, the discharge stream, on one side. To date, no
contamination has been recorded in the stream due to the sludge that is
currently stored in the Lagoon.
If the Land Application Permit is amended to include the following provisions the
Town of Troy will be able to properly operate their Treatment Facility and
effectively and economically manage their Sludge Disposal Program (See enclosed
map for point numbers)..
A. The Town -requests that it be allowed to waste sludge (from 1% to 5%
solids) into the Primary Lagoon (Point #2) at the rate of
approximately 20,000 gallons per week. With a solids percentage of,
very conservatively, 5%, this amounts to only 1,000 gallons of
solids per week or 52,000 gallons of solids per year into a
10,000,000 gallon Lagoon, effectively using .52% of the Lagoon's
storage capacity per year.

Troy - Sludge
4/5/93
(1) The Lagoon will act as a sedimentation basin with the solids
settling out on the discharge side of the Lagoon. The decant
from the Sludge Wasting Process will be circulated from the
Primary Lagoon to the Secondary Lagoon through a 24" overflow
pipe (Point #3) and returned through the Plant via the
Influent Pump Station (Point #5) as is done when sludge is
applied to the drying beds. This is, in turn, discharged as
treated effluent from the Plant. Since there are times due to
high inflow and infiltration when influent is diverted from
the Bar Screen to the Primary Lagoon (Point #1), concerns may
arise that the extra flow would wash the sludge into the
Secondary Lagoon, to the Influent Pump Station then into the
Plant.
(2) It is approximately 430 if from the Sludge Discharge (Point
#2) to the Secondary Lagoon Equalization Pipe (Point #3). It -
is then 280 if from the Equalization Pipe (Point #4) to the
Influent Pump Station (Point #5). This provides 710 if of
sedimentation prior to reentering the Plant. Should this
prove to be insufficient, the sludge can be discharged in the
upper end of the Primary Lagoon (Point #6) approximately 1200
if from the Equalization Pipe. This will provide more than
1/4 mile of sedimentation before reaching the Influent Pump
Station. It will also allow approximately 780 if of
sedimentation prior to reaching the High Water Discharge
(Point #1) at the Bar Screen. .
B. The Town proposes to use the Lagoon as temporary sludge storage for
2 year intervals then remove all sludge from the Lagoon for land
application. Only 1.04% of the basin's volume will have been
utilized in the 2 year period. If the storage interval proves to be
too long, a shorter interval will be used. Testing of -influent
drawn from the Secondary Lagoon at Point #5, will be done to
establish that no sludge is being returned to the Plant. Should.any
sludge be carried over into the Seconday Lagoon, it will be
cleaned.
C. At the end of the 2 year period, sludge will be tested per
"Requirements for Achieving Class "B" Pathogen Requirements" for
fecal coliforms. As a worst case scenario, should any samples fail
the test,'the sludge will be lime stabilized by raising the pH of
the sludge to 12 for 2 hours prior to land application.
(1) Under normal conditions, sludge that has been stored for 2
years in this manner has been treated by PSRP equivalent
process and should require no further treatment. --•
D. Sludge will not be wasted into the Lagoon for subsequent land
application for days prior to removal from the Lagoon. This "
days will be per 503 Standard Requirements at the time the
number of days is established.
E. Initial cleaning of the Lagoon will be performed and the sludge will
be land applied, as specified in the current Land Application �.
Permit, prior to implementation of this amended plan.

<y
1
Troy - Sludge
4/5/93
We appreciate your assistance in this matter and look forward to hearing from you
as soon as possible.
Sincerely,
Gray W lls, PF1
cc: Matt Bernhardt, Manager
Town of Troy
444 North Main Street
Troy, . NC 27371
Encl. (1) Map

to site storage. No other feature of the ,exl sting Permit will - be changed.
Please find enclosed a copy of the existing. application..permit.
No Construction is required. dam,
State of North Carolina
Department of Environment, -Health, and Natural Resources
Division of Environmental Management
Non' -Discharge Permit Application
(THIS FORM MAY BE PHOTOCOPIED FOR USE AS AN ORIGINAL)
LAND APPLICATION OF RESIDUAL SOLIDS
I. GENERAL INFORMATION:
1. Applicant (corporation, individual, or other): Town of Troy
2. Print Owners or Signing Official's Name and Title (the person who is legally
responsible for the facility and its compliance): Matt Bernhardt, Town Manager
3. Mailing Address: 444 North Main .Street
City:_ Troy, State: NC Zip: 27371
Telephone No.: ( 919 ) 572-3661
4. Application Date: 4/26/93 5. Fee Submitted: $ 400.00
6. Name, address, & county of facility where sludge originated: Should
be referenced on any plans/specs., analytical. results Land Owner Agreements, etc.:
Town of Troy;, Wastewater Treatment Pl ani
County Montgomery
7. County (s) where sludge will be land applied: Montgomery
8. Latitude: N/A ' ; Longitude' N/A of land application sites.
For multiple sites attach a listing of the sites and a latitude and longitude for each.
9. Owner and address of lands where sludge will be' land applied. For multiple sites attach
a listing:
N/A
FORM: LARS 4/91 Pagel of 25

x
LAND APPLICATION OF RESIDUAL SOLIDS
PAGE 2 (4/91)
II. PERMIT INFORMATION:
1. Permit No. (will be completed by DEM): N/Avi Q, 000 �C) +
2. Specify whether project is: new; renewal*; X modification.
*If renewal, complete only sections I, II, land owner agreement, & applicant
signature (on pg 24). Submit only pgs. 1, 2, 19, 20, 21, 22, and 24 (original and 3
copies of each). Engineer signature not required for renewal.
3. If this application is being submitted as a result of a renewal or modification to an
existing permit, list the existing permit number wonnni 24p and issue date5/25/Rg
4. Specify whether the applicant is X public, or private.
III. PERMIT FEE INFORMATION:
1. Number of Total Acres on which residual solids are proposed to be land applied under
the authority of this permit (include both land currently permitted and proposed lands):
N/A acres
2. The permit processing fee should be as specified in 15A NCAC 21-1.0205(c)(5).
IV. SITE INFORMATION:
1. A vicinity map must be attached. This -map must show the location of each site in
relation to at least two geographical references (numbered roads, named streams/rivers,
etc:).
2. For all new or modified sites, a detailed site location map must be attached. This map
must be drawn to scale with topographical contour intervals not exceeding ten feet or
25% of total site relief (whichever is more descriptive) and showing the property lines;
all existing wells, all surface waters and drainage ways and all dwellings within 500 feet
of the land application areas; and all buffers.
Note: At least the following buffers must be maintained. If residuals are sprayed on the
sites, larger buffers may be required:
a) 400 feet from any habitable residence for surface sludge application,
200 feet from any habitable residence for subsurface sludge injection
b) .100 feet between the disposal area and any public or private water supply
including wells.
2 of 25

65/e3/1993 15152 FROM C C E Sanford NC . TO 17005723663 P.02
E&I
LAND APPLICATION OF RESIDUAL SOLIDS
PAGE 24 (4/91)
Name and Complete Address of En ering Firm: Central Carolina Enui nee'rin g, PA
PO Box IQ6
City: _ Sanford States iJC Zip: 27330
Telephone No, 919-774-4356
Professional Engineer's Certification:
I, EL Gray Walls , attest that this application for Sl udge. 'Storage
Site Modification has been reviewed by me and is accurate
and complete to the best of my knowledge, I further attest that to the best of my knowledge the
proposed design. has .been prepared in accordance with the applicable regulations, Although certain
portions of this submittal package may have been developed by other professionals, inclusion of
these materials under my signature and seal signifies that I have reviewed this material and have
judged it to be consistent with the proposed'design.
North Carolina Professional Engineer's Registration No. 8467
Print Name of Engineer E: GraY Nall s
Seal and Signature (specify date):
�-� AppIicant's Certification.,
attest that this application. for S 1 _u dce . S to, r age
Site Modification,
has been'reviewed by me and is accurate and complete to the best of my knowledge. I understand
that if all required parts of this application are not completed and that if all required supporting
information and attachments are not included, this application package will be returned as
incomplete.
Signature Date
THE COMPLETED APPLICATION PACKAGE, INCLUDING ALJ, SUPPORTING
INFORMATION AND MATERIALS, SHOULD BE SENT TO THF, FOt LOil'ING ADDRESS:
NORTH CAROLINA DIVISION OF ENVTRONMENTAT, MANAGEMENT
WATER QUALITY SECTION
PERMITS AND ENGINEERING UNIT
POST OFFICE BOX 29533
512 NORTH SALISBURY STREET
RALEIGH, NORTH CAI7OLINA 27626-0535
TELEPHONE NUMBER: 919/733-5083
24 of 25

State of North Carolina
Department of Natural Resources and Community Development
Division of Environmental Management
512 North Salisbury Street - Raleigh, North Carolina27611
James G. Martin, Governor
William W. Cobey, Jr., Secretary
May 25, 1989
Mr. Matt Bernhardt, Town Manager
Town of Troy
444 North Main Street
Troy', NC 2737
R. Paul Wilms
Director
Subject:_ Permit No. WQ0001240
Town of Troy - .
Land Application of Sludge
Montgomery County
Dear Mr. Bernhardt:
In accordance with your application received February 16, 1989, we are forwar
herewith Permit No. WQ0001240, dated May 25, 1989, to the Town of Troy for operatio? of the
subject land application of sludge program. _
This permit shall be effective from the date of issuance until April 30,1994,. and shall
be subject to the conditions and limitations as specified therein._ /
If any parts, requirements, or limitations contained in this permit are unacceptable to
you, you have the right to request an adjudicatory hearing' upon written request within 30 days
following receipt of this permit. This request must be in the form of a written petition, conforming
to Chapter 150B of North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall
be final and binding.
additional
733-5083.
One- set of approved plans and specifications is being forwarded to you. If you need _
information concerning this matter; please contact Ms. Rosanne Barona at 919/
Sincerely, `
. Paul Wilms
o
cc: Montgomery County Health Department
Fayetteville Regional Office
The Wooten'Company
Groundwater Section
Pollution Prevention Pays
P.O. Box 27687. Raleigh, North Carolina27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY DEVELOPMENT
RALEIGH
For the discharge of Sewage, Industrial Wastes, or -Other Wastes
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended,. and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Town of Troy
Montgomery County
FOR THE
operation of a sludge land application program to land apply sludge from the Town of Troy
Wastewater Treatment Plant at agronomic rates to the sites specified in Condition No. 34, with
application based on agronomic cooperative three (3) year site rotation, pursuant to the application
received February 16 ,1989 and in conformity with the project plan, specifications, and other
supporting- data subsequently filed and approved by the Department of Natural Resources and
Community Development and considered a part of this permit.
_ This permit shall be effective from the date of issuance until April 30, 1994, and shall be
subject to the following specified conditions and limitations:
1. This permit shall become voidable unless the land application activities. are undertaken in
accordance with the approved documents.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. This permit is not transferable.
4. This permit shall become voidable in the event of failure of the soil to adequately absorb the
wastes and maybe rescinded unless the facilities are installed, maintained, and operated in a
manner which will protect the assigned water quality standards of the surface waters and
ground waters.
5. The Permittee must pay the annual administering and compliance fee within thirty.(30) days
after being billed by the Division. Failure to timely.pay the -fee in accordance with 15 NCAC
2H .0205(c)(4) may cause the Division to initiate action to revoke the permit.

6. In the event that the -facilities fail to perform satisfactorily; including the creation,of nuisance
conditions, the Permittee shall take such immediate corrective action as may be required by
this Division, including the construction of additional or replacement -wastewater treatment or
disposal facilities.
7. A suitable vegetative cover shall be maintained
8. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its
extension. Upon receipt of the` request, the Commission will review the adequacy of the
facilities described therein, and'if warranted,"will extend the Permit for such period of time
and under such conditions and limitations as it may deem appropriate..
9. The cadmium level cannot exceed 0.45 #/ acre / application or 5.0 #/ acre.over the life of the
site.
10.. All fields will be flagged prior to. land application to assure compliance with buffer zones.
11. This sludge application permit is based on an agricultural agronomic cooperative three (3)
year site rotation.
12. The phosphorus constituent cannot exceed-100 #/ acre/ year. .
-13. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to
surface or groundwaters resulting from the operation of,thisfacility.
14. The facilities shall be effectively maintained and operated as a non -discharge system -to
prevent the discharge of any wastewater -resulting from; the operation of this facility.
15. No type of sludge other than that from the Town of Troy Wastewater Treatment Plant shall
be placed on the land application disposal site.
16. Adequate provisions shall be taken to prevent wind -erosion and surface runoff from
conveying pollutants -from the sludge application area onto the adjacent property or into the
surface waters.
17. Sludge shall not be applied in inclement weather or until ,24 hours following a rainfall ,event
of 1/2-inch or greater in 24 hours. Emergency sludge disposal measures shall be -approved
by the Division of Environmental Management.
18. The site shall be adequately limed to a soil pH of 6.5 prior to sludge application.
19. No=crops for direct human consumption shall be raised on these sites for a period of 18
months following. sludge application.
20. Maximum slope for sludge. application shall be 10% for surface application arid" 18% for
subsurface applications-.
21. This perm- it shall become voidable unless -the agreements between the Town_of Troy and the
landowners -listed in Condition No. 34 is in full forice.a'nd effect.

22' .In any future transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied or incorporated at this site
23. This facility must provide the Fayetteville Regional Office -with an annual summary of the
management procedures for the sludge site(s). This annual report must be submitted by
December 31st of each -year beginning with 1989. This annual summary. must include the.
following information:
a. Current sludge analysis.
b. Soil analysis along with recommendations from a soil scientist for sites utilized.
C. Total dry weight of sludge applied'per acre,. location (site), and cover crop utilized.
d. Verifications that proper liming was 'conducted.
e. Estimated crop yield during sludge application(s).
24. Animals should not be grazed on sludge applied land within a 30-day period following the
sludge application. 'Application sites that are to be used for, grazing shall have fencing that
will be used to prevent access during the 307day periods after each application.Lactating dairy
cattle shall not be grazed on sludge applied land within an 18-month period following the
sludge application.
25. Surface applied sludge will be plowed or disced in immediately after application on lands
- with no cover crop established.
26. Surface application of liquid sludge shall not be used on sites that are prone to flooding
conditions. (Below the 100-year flood level.)
27. Public access to the land application sites shall be controlled during. active site use and for the
12-month period following the land application event:
28. Any additional groundwater quality monitoring as deemed necessary by the Department, shall
be provided.
29. A set of approved plans and specifications, for the subject project must be retained by .the
applicant for the life of the project.
30. No, land application of waste activities shall be undertaken when the seasonal high water table
is Iess than three feet below land surface.
31. Prior to application, the sludge will be sampled and analyzed for routine nutrient analysis.
Representative sludge samples will be collected from the aerobic digester, delivered to a
qualified laboratory familiar with sludge analysis, and analyzed for TKN, NH4-N, NO3-N,
P, K, and % solids. This information will then be used to calculate the specific application
rate for the field and crop.
32.- Adequate facilities shall be provided to prevent surface.runoff carrying any disposed or
stored material into any surface water.
' L

34.
The following buffers shall be maintained:
a. 400 feet from residences :for surface application
b. 200 feet from residences for injection method
C. 100 feet from "SA" and "SB" classified waters and public surface water supplies for
both methods
d. 50 feet from; "WS" classified waters- and other.streams, lakes, rivers and surface water
drainage ways'forinjection method
e. .100 feet from 'WS"' classified waters and other streams, _lakes, rivers and surface .
water drainage ways -for surface application method'
f. 100 feet from property lines for both methods
g. 50 feet from public right-of-ways for -both methods
h. 10 feet from upslope interceptor drains and surface water diversion for both methods
i. 25 feet from downslope interceptor drains, surface water diversions,- and groundwater
drainage systems for both methods.
The following is .a list of sites permitted to receive sludge. Sites not found are hereby not
authorized to receive sludge.
Site No. Owner/Lessee Net Acreae Total Acreage ro
'i Tommy Lemons . 60 73 fescue
2 Doyle Atkins 15 75. fescue
3 Bill Lynthacum 18 30 fescue
4 Charlie Lemonds 14 20 fescue
5 Lonnie Lemonds 16 27 , fescue
6 Albert Russell, 52 105 corn, -wheat
7 Oscar Sanders 2d - fescue
200 390
Permit issued this the 25th day of May ;1989
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
R. Paul Wilms, Director
Division of Environmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0001240
�3

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EXHIBIT 28
LOCATION AND TOPOGRAPHIC 1`IdAP

BOY MANESS
MAYOR
'TOWN. OF TROY JIMMY PRESLAR
MAYOR PRO-TEM
COMMISSIONERS -
INCORPORATED 1852 H.V. M HURLEY Y HHURLEY
E.C. NOORE
JEFF MORRIS
NC Department of Environmental Management. H. MATTHIAS BERNHARDT
p g TOWN MANAGER
Water Quality Section — Permits and Engineering CATHY M. MANESS
Attention: Carolyn McCaskill TOWN CLERK
P.O. Box 29535
Raleigh, NC 27626=0535 „..............
RE: Addenda to AncOd el t '.ft;r` La>Zci' Op. ;,tp.�,..,
Permit 24.� �' y`,�:':..• �'': �r''=�`^-�.,,
Town of fii;
Dear Carqn: t�A , ' ;�•• •.,��,r
3�. u O the ,2 yearA .?�od : zequeste t�=�n 'I�aTe l ..xX
datt,:.i3 rci; ,9; �`3992 ,s�=ti. �'ov�i' prop�3'ei; :sd=rt$re•..h �'s .u' r 22
mont ,#- of lci�ntr''` �3i`tiwill be ,�ermitte'd'�; p`�'Iand,,app the
:..'�
o st�c elu gel,. in ad�rancE%:�pfi:t: 22 mori`ea`dlne : ,the
f� st.br`sete, the",Ir storei;, for 18 fan In
s r ,y rea #1, 'the f�'�o 4" vX11 be, h t�da ,S i e
qq
r 'o age. A..r : At 2� r o.ilth , .. the* •��>7� lr e will -. , ,vac o;
"edge -tor q' Area #1}wxv�i�q gQ'w., the been dos'`ec� t e,
r'fou ,4the rior�'`;•1 !'3udte will b eosited
�;45 ugege Area #2� o ;?;'+n k'� "'*pnthe. Afg the fi s
; r moVA_ c +:q e, the a t S' a ge areas . 18 �'ment
' n rvals ets u ours' 2�+ -, - `@ 'pattern an rt 1i
:E P' ►''`.c Prior to a ti remb'v
.j� o ths... s'•nactivty..�, , Y ,
Y .l.e.. rL ti`�.�` `fit.•,"
tit ►•.tit; r
he T wn will hire, -ntractor to me p t
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si • 22 months fr t; 9 Pg
sludge bein um din
+,art a lack. o The sludge :1� �+ d t� out of-. the _; oon b
.. :nrg� or d testeci%F' S�cation. $hl te.,�s'u
' Qtiiee.t: 503 Re`gu '.i�,;}'';�`,F,a'� Colifor,� aitf 1�
tracttor .1 lime stab ` � z �; iih ;; s lge' per 503 i" el es p 5
� t�
n`rda '4' ; aint� n +t •�8 r� Alta fi y of t la �on i� i• bm
cl�'�`,e i g ai-e:tt ey''t�oon 'wi`:et atiCamplsh;d'�ing suctitmps
only- o d a i ne"L ril-;-.. be permitted k,inj Tip �N a�goon
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PHONE: [phone] TROY, NORTH CAROLINA 27371-2799

rantr�l C.arolin��T ngineering, PA
.NC Department
Water Quality
Attn: Caroly
PO Box 29535
POST OFFICE BOX 1706. -
SANFORD, NORTH'CAROLINA 27330
June 2,.1993
n
of Environmental Management
Section.- Permits & Engineering
McCaskill
Raleigh, NC 27626-0535
Re: Town of Troy
Land Application.Permit Modification '
PHONE: [phone]
Carolyn: :J
Please find enclosed three (3) copies -.of the 'plant .layout drawing .showing
soundings across the lagoon -as well as documenting the•creek water level and_
creek•bed elevations.
As can be seen from the drawings; the lowest point in the lagoon is 93.3 and the
stream bed is 85.7 at the point shown: The -lagoon bottom is 7.6 feet higher than
the stream bed. The edge of water in the lagoon is approximately 75 feet from
the edge of the -stream for most of the lagoon length. With the stream bed being
7.6 feet lower than the creek, we can only believe that had the insitu clay
bottom failed, the 'stream would certainly be -the recipient of any leakage. There
was no evidence of water running through the -lagoon bank into'the creek. The
downstream sample point is located approximately midway of the lagoon as shown
on the drawing. Please find data from the sample point•enclosed along with a
summary sheet. These bi-monthly tests', while showing fecal problems in three'
periods, give no indication that contamination leaking from the lagoon to the
creek is present. -For four months spaced randomly throughout the year, counts
were 65 or below..For five months the count was below the 200 mark and .for only
three months was there a problem. This plant has never had the ability to waste
sludge when required., hence toxicity problems and other operational problems we
believe are the result. We feel that. wasting sludge into the lagoon as required
will cure creek contamination problems by -finally allowing -'the plant .to waste
.solids when necessary and thus eliminates the sludge build-up in the plant.
The bottom was probed at numerous points and it appears that most of the sludge
has remained in the existing storage, area. There appears to be a definite
tapering -off of sludge to about 30 feet beyond the current storage area. Then
past that,'there maybe two to three inchesof soft material consistently over
the entire lagoon -bottom before hitting hard material. As can be seen from the
soundings, the bottom appears to have remained remarkably. -consistent.:` The Town
intends to waste sludge into the lagoon at two -sludge storge_areas as.shown'on
the drawings. For the first storage cycle,- the sludge will be stored for 18
months in Sludge Storage Area 11, then storage will be shifted to Sludge Storage
Area #2. ,At 22 months, the -sludge will be removed -from Sludge Storage -Area #1.
No sludge will have been deposited. there for four months prior to removal.
Sludge will be deposited in Sludge Storage Area #2 for the next 14 months. After
the first removal cycle, the -alternation of storage areas at-18 month intervals
sets up our 22 month storage pattern and provides 4 months of inactivity in the

removal area prior to each removal cycle. Since only 18 months of sludge will be
stored in a storage area prior to removal, all indications are that the sludge
will never leave it's storage area. Sludge will be removed from the lagoon every
18 months even though the sludge age in the lagoon will be 22 months.
The contractor retained by.the Town to implement the'land application program
Will use'a floating dredge that "sucks out" the sludge as it moves across the
sludge storage area. The use of suction will.cause no breech in the lagoon
bottom.- Draglines-will not be allowed in the lagoon.
Should you have further questions or need- clarification on any information `
provided, please advise.
Sincerely-,
6 4
Gray lls, PE
GW/lw
Encls.

TOWN OF TROY WASTEWATER TREATMENT PLANT
SUMMARY OF DOWNSTREAN FECAL COLIFORM MONTHLY AVERAGES
TIME PERIOD FROM HAY 1992 TO APRIL 1993
MONTH MAY JUNE JULY LUG SEPT OCT NOV DEC JLN FED MAR LPR -
RESULTS;• 140 609 63 165. 27 177 65 168 399 34 _ 780 189
Z
,
it

TOWN OF TROY WASTEWATER TREATMENT PLANT
SUMMARY OF DOWNSTREAM FECAL COLIFORM MONTHLY AVERAGES
TIME PERIOD FROM MAY 1992 TO APRIL 1993
MONTH MAY JUNE JULY LUG SEPT OCT NOV DEC 'JLN FED MAR APR
RESULTS 140 609 63 - 165 27 177 65 - 168 399 34 780' 189

TOWN OF TROY WASTEWATER TREATMENT PLANT
SUMHARY OF DOWNSTREAM FECAL COLIFORM MONTHLY AVERAGES
TIME PERIOD FROM MAY 1992 TO APRIL 1993
MONTH MAY JUNE JULY LUG SEPT OCT NOV DEC Jig FED, MAR- APR
RESULTS 140 609 63 165 27 177 65 168 399 34 780 189
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Central Carolina Engineiing t'A
POST OFFICE BOX 1706
SANFORD, NORTH CAROLINA.27330
March 29, 1993
PHONE: [phone]
,..,�. ,....,.._.,...... �_yF.`.
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NC Department of Environmental Management
-
Water Quality Section Permits & Engineering
Attn: Paul Rawls 'MAC 6U 6",
225 Green Street, Suite 714
Fayetteville, NC 28301 ENV. MANAGEMENT
FAYETTEVILLE aQ OfKa
Re: Town of Troy.
Request for Amendment to Land Application Permit #WQ0001240
Paul:
As discussed in our phone conversation, the Town of Troy is' respectfully
requesting an amendment to its Land Application Permit #WQOOO1240 dated February
10, 1992, to include utilizing the current Primary Lagoon for temporary sludge
storage in order to facilitate the Land Application Program due to the following y
Plant conditions:
1. There is currently no sludge storage capability at the Plant and the
drying beds available for sludge wasting have approximately one third the
area required to properly operate an Activated Sludge Plant of this size.
Further aggravating this situation is the fact that during wet weather,
the drying beds 'are rendered essentially inoperable. When this occurs
there is no way to remove sludge from the treatment process..
L.
2. The Town has been forced to seek alternative sludge,storage capacity by _
wasting sludge into the ten million gallon. Primary Lagoon 'which, was
previously used for primary treatment prior to construction, of their,
Activated ,Sludge Plant.
.3. The Town was granted this operational variance by DEM on a case by, case
basis when -the Plant's ability to treat effluent to -the permitted_ limits
was in jeopardy.._
4. The basin has been in use since`1968:N It is constructed in'clay soil with -
the
discharge stream on one side. ; .To date, no contamination has been
recorded,in the stream due.to the sludge that is currently stored in the
Lagoon.
If the Land Application Permit is amended to include the following provisions the
Town of Troy will be able to properly operate -their Treatment Facility and
effectively and economically manage their Sludge Disposal Program (See enclosed '
map for point numbers).
,t
A. The Town requests that -it be allowed to.waste sludge (from 1% to 5%
solids) into the Primary Lagoon (Point #2) at the rate of
approximately 20,000.,gallons per week. With a solids percentage of,
very conservatively, 5%,.this'; amounts -�-o:.only 1,000 gallons of
solids per week or 521000 gallons of solids ;per year into a
10,000,000 gallon Lagoon,' effectively using.A52%`of the _-Lagoon's.
storage capacity per. year.
i-

Troy - Sludge
3/29/93
(1) The Lagoon will act as a sedimentation basin with the.'solids
settling out.on the discharge side of the Lagoon. The decant
from the Sludge Wasting Process will be circulated from the
Primary Lagoon to the Secondary Lagoon through a 24" overflow
pipe (Point #3) and returned through the plant via the
Influent Pump Station (Point #5) as is done when sludge is
applied to the drying beds. This is, in turn, discharged as
treated effluent from the Plant. Since there are times due to
high inflow,and infiltration when influent is diverted from
the Bar Screen to the Primary Lagoon (Point #1), concerns may
arise that the extra flow would wash the sludge into the
Secondary Lagoon, to the Influent Pump Station then into the
Plant.
(2) -It. is approximately 436 if from the Sludge Discharge (Point.
#2) to the Secondary Lagoon Equalization Pipe (Point #3). It
is then-280 if from the Equalization Pipe (Point #4).to the
Influent Pump Station (Point-#5). This provides 110 lf,of
sedimentation- prior to reentering the Plant. Should this
prove,to be insufficient, the sludge can be discharged in the
upper end of the Primary Lagoon (Point #6) approximately 1200
if from the -Equalization Pipe. This will provide more than
1/4.mile of sedimentation. It,.will also allow approximately
780 if of sedimentation prior, to reaching the High Water
Discharge .(Point #1) at the Bar Screen.
B. The Town proposes to use the Lagoon.as.temporary sludge storage for
5 year. intervals then remove all sludge from the Lagoon for land
application. Only 2.6* of the basin's volume will, have been
utilized in the 5 year period. If the storage, interval proves to be
too long, a shorter interval will be used. Testing of influent
drawn •from the Secondary Lagoon at Point 451. will be done to
establish that no sludge is. being returned to the Plant. Should any
sludge be' carried over, into the "Seconday Lagoon, it will be
cleaned.
C. At. the end of the 5 year .period, sludge will be" tested per
"Requirements for Achieving Class "B" Pathogen Requirements,'' for
fecal coliforms. As a worst case scenario, should any samples fail
the test, the sludge,will:be lime stabilized by-rai.sing the -pH of
the sludge to 12 for 2 hours prior to land application.
(1) Under normal conditions, sludge that has been stored for 5
years in .this manner has been treated by PSRP equivalent
process and should require no further treatment.
D. Sludge..will not be wasted into the Lagoon for subsequent land
application for days prior to removal from the -Lagoon. This
days will be per 503 Standard_'Requirements at the time the
number of days is established.
E. Initial cleaning -of the Lagoon will be performed and the sludge will
be land applied, as specified in the current Land Application
Permit,, prior to implementation of this•amended plan.
2

Troy - Sludge
..3/29/93
We appreciate your assistance in this matter and look forward to hearing from you
-as soon as possible.
Sincerely, y
GrayZlls, P
cc: MattBernhardti Manager.
Town of Troy
444 North Main Street
Troy, NC 2737.1
Encl. (1) Map