NC0088200_Permit (Issuance)_20060509

NPDES DOCUMENT SCANNING: COVER SHEET
NC0088200
Thomasville WTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment
(67b)
Environmental Assessment (EA)
Permit
History
Document Date:
May 9, 2006
This document is printed on reuse paper - ighnore any
content on the reverse side

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r NCDENR
H
Ms. Kelly Craver, City Manager
City of Thomasville
P.O. Box 368
Thomasville, North Carolina 27361
Dear Ms. Craver:
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
May 9, 2006
Subject Issuance of NPDES Permit NC0088200
City of Thomasville WTP
Davidson County
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated May 9,1994 (or as subsequently amended).
This final permit includes no major changes from the draft permit sent to you on March 15, 2006.
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 Sergei Chernikov at telephone number
[phone], extension 594.
cc NPDES File'
Winston-Salem Regional Office / Surface Water Protection
Sincerely,
N. C. Division of Water Quality ! NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet: h2o.enr.state.nc.us
Phone: [phone]
fax: [phone]
DENR Customer Service Center: 1 800 623-7748

Permit No. NC0088200
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,
City of Thomasville
is hereby authorized to discharge wastewater from a facility located at
City of Thomasville
Water Treatment Plant
Old Lexington Road
Thomasville
Davidson County
to receiving waters designated as an unnamed tributary to the Rich Fork Creek 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 June 1, 2006.
This permit and authorization to discharge shall expire at midnight on April 30, 2009.
Signed this day May 9, 2006.
r- . '. ' s s ek, P.E., Director
Di ," ion of Water Quality
ty
By Authority of the Environmental Management Commission

Permit No. NC0031925
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.
City of Thomasville
is hereby authorized to:
1. Continue to discharge clarified supernatant from Alum Residual Lagoon System that belongs to the
water treatment facility located at City of Thomasville Water Treatment Plant, Old Lexington Road,
Thomasville, Davidson County (See Part III of this Permit), the System has following components:
• Pump station
• Residual receiving station
• 2.1-acre residual settling lagoon
• Decanting structure
• Rip -rap effluent discharge channel
• 4.3-acre supernatant lagoon
2. Discharge from said treatment works at the locations specified on the attached map into an unnamed
tributary to Rich Fork Creek which is classified C waters in the Yadkin Pee Dee River Basin.

Latitude:
Longitude:
USGS Quad #:
River Basin #:
Receiving Stream:
Stream Class:
35° 52' 22"
SO° 09' 0.01"
D I SSW
03-07-07
UT ro Rich fork Creek
Nt
City of Thomasville Water
Treatment Plant
Davidson County
NC0088200

Permit NC0088200
A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning upon the effective date of the permit and lasting until expiration,
the Permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall
be limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow2
0.2 MGD
2/Month
Instantaneous
E
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
E
Total Iron
Monthly
Grab
E
Total Aluminum
Monthly
Grab
E
pH3
2/Month
Grab
E
Total Residual Chlorine'
17 µg/L
2/Month
Grab
E
Settleable Solids
0.1 mL/L
0.2 mL/L
2/Month
Grab
E
Notes:
1 Sample locations: E — Effluent.
2 For instantaneous flow monitoring the duration of the discharge must be reported in addition
to the total flow.
3 The pH shall not be less than 6.0 standard units or greater than 9.0 standard units.
4 Facility is allowed 18 months from the effective date of the permit to comply with the total
residual chlorine limit. This time period is allowed in order for the facility to budget and
design/construct the dechlorination or alternative disinfection systems.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

NORTH CAROLINA
FORSYTH COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State, duly
commissioned, qualified, and authorized by law to administer oaths, personally
appeared D.H. Stanfield, who 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 Winston-Salem Journal on
the following dates:
March 18, 2006
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 1-597of the General Statutes of North Carolina.
This 20th day of March, 2006
D/A
(signature of pers aking affidavit)
Sworn to and subscribed before me, this 20th day of March, 2006
My Commission expires: September 28, 2010
OFFICIAL SEAL
Public, relina '(
NblicNer!. � i;a
Notary
OF FOilSY?ri tt
KIMALEY OHi` SON
My Commission Expires 1 -
lipUBUC NOTICUY
," sraTE OF NORTH CAROLINA ..•
.
EPMRONMENTAL MANAGEMENT COMMISSION./
NPDES UNIT
161T MAIL SERVICE CENTER
NC 27699.1617 iL3`
NOTIFICATIONN OF INTENT TO ISSUE
A NPDES WASTEWATER PERMIT
On the basis of thorough staff review and application of
NC Were! Statute 143.21 Public taw 92- 00 and other
lawful standards and regulations, the North Carolina En-
viron Maan�aggement Commission proposes to issue
a National Pollutant Discharge . Elimination System
(NPDES) wastewater discharge permit to the person(s
effect listed below effective. 45 dos from the publish dateo_
this notice.
Written comments regarding the pro self permit will be
accepted until 30 days after the,publlssh date of this no-
ice.'AII commentsreceived prjorto thattiate"are consid-
e�eti. n efir�at terminations inggthe proposed
Permits a Directo of the N D orWater uality
matt de to hold a piilgicAteeting for the proposed
permit should the Division receive.asfgnificant deg ree of
ub it me '"
; es of the draft pererut'��rrttd ersuppor-ting rma
onion le used to determine-' conditions present In me
draft permit are avallabie upon request and paymerltof
the costs : of reproduction. Mail comments and/or; re-
questsforinformation tothe NC Division of Qttatill
at the above address Of call the Point Source ranch•at
(919),.733-5083, extension 520: Please include,e•NPDES
permitpenumber (aytschhed) in any communica on. inter—
ested
_-2 N. Saallisburry Street,fo visit Raleliigvh. NC 27604-114 be-s
tween the hours of 8:00 a.m. and WO p.m«to review
forma ion on file. `
The of Thomasville (P.O.' Box- 368, Thomasvlll NC
27361). "moiled fora new NPDES permit NC00�00
for the ty of Thomasville WTP in D v dson.my This
permitted facility discharges filter backwa. and alum
sludge decant to the UT to Rich Fork Creek in the Yadkin
Pee -Dee . River Basin. Currently .total suspended solids
and total residual chlorine are water quality limited. This
discharge may affect future allocations in this portion of
the Yadkin Pee -Dee River Basin:
WSk_March 18, 2006

02/18/2006 23:49 3368895650
JENSEN ENVIRONMENTAL PAGE 01
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JENSEN ENVIRONMENTAL
PAGE 04
Figure 2 Alum Sludge Lagoon Site Plan

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NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number INC00 Yoe)
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise, please print or type.
1. Contact Information:
Owner Name City of Thomasville
Facility Name City of Thomasville Water Treatment Plant
Mailing Address P.O. Box 368
City Thomasville
State / Zip Code NC 27361-0368
Telephone Number [phone]
Fax Number [phone]
e-mail Address [e-mail]
2. Location of facility producing discharge:
Check here if same as above D
Street Address or State Road
City
State / Zip Code
County
200 Old Lexington Rd.
Thomasville
NC 27361-0368
Davidson
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name City of Thomasville
Mailing Address PO Box 368
City Thomasville
State / Zip Code NC 27361-0368
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Dn..o 1 ..FA
r_urry mmc

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Federal ❑ State ❑ Private ❑ Public Egi
5. Type of treatment plant:
• Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
❑ Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge)
❑ Membrane Technology (RO, nanof ltration)
Check here if the treatment process also uses a water softener ❑
6. Description of source water(s) (Le. groundwater, surface water)
Surface water
7. Describe the treatment processes) for the raw water:
Potassium Permanganate added at wet well.
8. Describe the wastewater and the treatment processes) for wastewater generated by the
facility:
The wastewater is the alum sludge generated during the flocculation process and settled
out in the sedimentation basins and backwashed from the filters.
9. Number of separate discharge points: 1
Outfall Identification number(s) 001
10. Frequency of discharge:
Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
11. Plant design potable flowrate 6.0 MGD
Backwash or reject flow 0.157 MOD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Unamed tributary to Rich Fork Creek to Abbots Creek to Yadkin River
v�� of A C_u1TP AVVnc

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
13. Please list all water treatment additives, including cleaning chemicals, that have the
potential to be discharged.
Alum
Potassium permanganate, Caustic
Sodium Hexamataphosphate
Sodium Fluroide
MIOX • Sodium Hypochorite
14. Is this facility located on Indian country? (check one)
Yes ❑ No El
15. Additional Information:
• Provide a schematic of flow through the facility, include flow volumes at all points in
the treatment process, and point of addition of chemicals.
> Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
> New applicants must contact the NCDENR Customer Service Center.
Was the Customer Service Center contacted? ® Yes 0 No
> Analyses of source water collected
• Engineering Alternative Analysis
• Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Kelly Craver
errty Manager
Prin name of Person Signing Title
i- 11- Ora
igna of pplicant Date
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
pogo 1 of A r-U T T' Al i114

.4
NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor
punishable by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18
U.S.C. Section 1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than
5 years, or both, for a similar offense.)
Anna A of A
e_1urrP nZ/nC

ALTERNATIVE ENGINEERING ANALYSIS
WATER TREATMENT PLANT
ALUM SLUDGE LAGOON NPDES
PERMIT APPLICATION
CITY OF THOMASVILLE,
NORTH CAOLINA
January 19, 2006
Prepared by:
Jensen Environmental Consultants, PA
PO Box 2245
Jamestown, NC 27282-2245
Phone: [phone] Fax: [phone]

City of Thomasville January 19, 2006
Introduction
The City of Thomasville operates a six million gallon per day water treatment plant
located at 200 Old Lexington Road in Thomasville, North Carolina. Thomasville
shares their raw water source, Lake Tom-a-Lex, with the City of Lexington. Lake
Tom-a-Lex is a man made reservoir on Abbots Creek a tributary to the Yadkin River.
The water treatment plant operates using a standard flocculation — sedimentation —
filtration process. Mum sludge is collected from the settling basins and from
backwash water. Originally the sludge was collected in a holding basin where it
settles and the decant water pumped to the head of the plant. The sludge was
trucked to an alum sludge lagoon which was permitted in 1985. Figure 1 shows a
schematic of the water treatment plant.
Prior to the 1992 water treatment plant upgrade and renovation, it was common
practice to decant the water from the sludge and recycle it to the head of the water
treatment plant. Renovations performed in 1992 included a continuous sludge
removal system installed in the settling basins which caused a continuous flow of
sludge from the water treatment plant. Due to State requirements, the operators
stopped recycling backwash and sludge supernatant to the head of the plant. This
increased the amount of wastewater generated at the plant and as part of the
improvements; a force main was constructed to the alum sludge lagoons because
trucking became impractical.
Background
The City has been treating about 4 million gallons of water per day for the past 15 to
20 years. Thomasville's service area is limited by the City of High Point to the north
and east and Davidson Water to the south and west. Recent annexations did not
increase the user base since these customers were already being served with water
from these two suppliers. Water usage has dropped recently with the closing of
several textile mills and furniture factories. Unless a major water using industry
comes to town, Thomasville's water production will not increase greatly for the
foreseeable future and no plant expansion is planned for the next 20 years.
Table 1 shows the current alum sludge produced at the plant. The average daily
production is approximately 104,850 gallons per day. The volume of the existing
alum sludge lagoon is 3.2 million gallons and covers approximately 2.7 acres. A
second proposed lagoon, to be constructed when the first lagoon is filled with
sludge, encompasses approximately 5.5 acres and will hold about 12.1 million
gallons. Figure 2 shows a site plan of these lagoons.
1

Figure 1. Water Treatment Plant Schematic
LAFE rreNf-A-Li
RAM WARR R PLIAPPii STATION
ALUM SLUDGE LAGOON
10'
6'
PIPS
S
STGIRAlE
TANK
a d 7!� fu;
_Ls
v 9 T 1wa7ER
5ARIS
RAPID
I D N
ELOCGULAT:ON BASIN
5F1J, M ES TAT ION 6551I•!
�14 T£ RS
SLY
Lk5',C
EARMAT£R
RESERVOIR NO,
C. lACf4 rr�F
SOR,LE nw+
if IGn
sTR.-,GE
P L'Hr<S
WATER TREATMENT
PLANT IMPROVEMENTS
THOMASVILLE. NC.

d
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f r rA
Figure 2. Alum Sludge Lagoon ' Plan
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I+ f { - \c{\\�� of l$..-7 1/f /i, �,t 1 ♦ `` �^ � f 4 �� -'` .�-i = `•+ YE. !
`ma. l e. 1 *.\S ` °°-�rl'/ ,Ifi. \� f xr F __ __ FE
r �'.:--- 7�R7: ,.- -- /
.� = ~�� ."Y �. 1 i _d/ PJ',r,,,.. ..F" ,,_.---�,"r J r I ®eNw tir aw. �y _s t
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-1 41, \ '.
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C. E. LEONARD
tilLard SU- 4.6
•
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tiKREI..W-.. f
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2

City of Thomasville
January 19, 2006
Table 1
Settling Basins
90 gpm
90 min
6 basin
48,600 gpd
Backwash
3000 gpm
8 min
1.5 filters/day
36,000 gpd
900 gpm
3 min
1.5 filters/day
4,050 gpd
Rewash
720 gpm
15 min
1.5 filters/day
16,200 gpd
Total
104,850 gpd
The alum sludge lagoon is permitted as a non -discharge facility (Permit No.
WQ0000425) but was never operated nor designed as one. A telescoping valve on the
outlet side of the lagoon discharges settled water that drains to an unnamed
tributary of Rich Fork Creek. Rich Fork Creek empties into Abbots Creek
downstream from Lake Tom-a-Lex.
Based on the average sludge production of 104,850 gallons per day and a storage
volume of only 3.2 million gallons, the alum sludge lagoon will fill up in a little over
30 days. This does not account for any rain that falls into the lagoon. Even with the
second lagoon constructed, the total volume of storage only provides for 116 days of
storage. Investigations into the design and permitting of this facility were
inconclusive on how the lagoon was to be operated as a non -discharge facility with
such a small volume of storage. It is unsure why a non -discharge permit was issued
for this facility.
The operation of the alum sludge lagoons discharged clarified supernatant. The
City was informed that since they had a "non -discharge" permit, they should not be
discharging the supernatant. The City informed the State and asked for assistance
with correcting this situation. After discussion with the State, we are requesting that
an NPDES discharge permit be issued for this facility.
Population Projections
The City of Thomasville's water customer base is fully developed. They are
completely surrounded by the City of High Point and Davidson Water service areas.
Unless these water service providers give up some of their customer base to
Thomasville, the City's customer base will not grow very much in the future. The
City water plant operates at 67% capacity and expects their current water treatment
plant to able to handle any growth for the next 20 years or more. As shown below
the direct discharge option is the most cost effective and most practical solution for
this situation.
Flow Projections
Since the growth of the customer base is limited by the surrounding water systems,
the City of Thomasville does not expect to increase the treatment capacity of their
water treatment plant for the next 20 years or more. They currently treat
2

City of Thomasville January 19, 2006
approximately 4.0 million gallons per day and have a capacity of 6 million gallons
per day. By applying a straight line ratio, the treatment plant would produce up to
157,275 gallons of alum sludge per day when treating at full capacity. A land
application system will need to be designed for the plants ultimate capacity.
Alternatives
Connect to Existing WWTP
History of problems at WWTP
The City of Thomasville's wastewater treatment plant is under an SOC and has
problems with sludge handling and meeting its limits. They are currently trying to
reduce the planned upgrade costs by $10 million dollars. They cannot handle the
additional sludge from the water plant now or for the near future. This alternative is
not feasible due to the wastewater plants limitations and problems.
Land Application
The application rate for applying the wastewater to land was developed from data
presented in the Hydraulic Handbook, published by Fairbanks Morse Pump
Corporation, Twelfth Edition, Tables 31, 32 and 33, pages 96-97. In Table 31, the
amount of water to be applied for pastures is 2 to 3 inches or an average of 2.5
inches per application. Table 31 also gives the time between applications as 14 to 21
days or an average of 17.5 days. Information provided by the Davidson County
Agriculture Extension Agent gives the price of land at approximately $5,000 per acre
and an operating cost of $166 per year to grow an acre of hay.
Based on the hydraulic loading rate of 2.5 inches per application for pastures (hay)
and 17.5 days between applications, the amount of land required would be
approximately 40 acres to dispose of 157,275 gallons per day alum sludge. Adding an
additional 25% for buffers and access road, the City would need to obtain 50 acres for
disposal At $5,000 per acre the cost of land would be $250,000 and at $166 per acre
per year for 40 acres, the City would incur an annual operating cost of $6,640 to raise
and harvest the crop.
Additionally the City would have to construct a pumping station and force main to
pump the wastewater to the pasture. The estimated cost for a pumping station is
$75,000 and at $10 per foot, a 2 mile force main would cost $105,600. Operation and
maintenance costs are estimated to cost $15 per hour for 8 hours per week or $6,240
per year.
The present value of a land application system with a discount rate of 5.785% would
be:
Capital costs = $250,000 + $75,000 = $325,000
Annual Costs = $6,640 + $6,240 = $12,880
PV = Capital Costs + Annul Costs ((1+r)n—1)/(r(1+r)°)) (r=0.05785, n=20 yrs)
3

City of Thomasville January 19, 2006
$325,000 + $150,346
= $475,346
This present value assumes that there is available land within 2 miles of the existing
sludge holding lagoon.
Reuse
There are no potential users of reused water in the area of the alum sludge lagoon.
All water would have to be pumped approximately 5 miles to the nearest industrial
area that could possible use the amount of water generated a day. The City is
procuring customers to provide reused water from the City's wastewater treatment
plant. Finding additional customers will be difficult. The long term use of reused
water is not a
Direct Discharge to Surface Waters
Projected Permit Limits
The proposed discharge is the settled water from the alum sludge generated at the
City's water treatment plant. Based on discussions with the Water Quality Engineers
at the Winston-Salem Regional Office, the City has examined their proposed
discharge for the following chemical and physical properties:
Table 2
Potential Effluent Limits
Effluent
Parameter
Aluminum
Iron
Turbidity
Settleable Matter
Total Suspended Solids
Total Residual Chlorine
Monthly
Average
N/A
N/A
N/A
0.1 mg/1
30.0 mg/1
N/A
Daily
Maximum
N/A
N/A
N/A
0.2 mg/1
45.0 mg/1
28.0 }ig/1
4

City of Thomasville
January 19, 2006
Laboratory Results of Analysis of Permit Parameters
Table 3
Laboratory Results
Date
Aluminum
(µg/l)
Iron
(mg/1)
Turbidity
(NTU)
Settleable
Solids
(m1/1)
Temp.
(°C)
pH
(SU)
Residual
Chlorine
(mg/1)
Total
Suspended
Solids
(mg/1)
12/14/05
469
234
6.3
<0.1
4.5
7.1
BDL*
5.60
12/19&22/05
895
391
7.3
<0.1
6.4
7.3
0.04(BDL)
5.40
12/28&30/05
1196
448
7.6
<0.1
9.5
7.0
.09
3.80
1/04&06/06
749
257
5.6
<0.1
6.1
7.2
0.04(BDL)
6.00
BDL — Below Detection Limits
Attached is a copy of the latest results for the City's alum sludge TCLP testing. All
results since 1990 are available if required. The City also has available 15 years of
quarterly test results of the three monitoring wells if these need to be reviewed.
Thomasville has always met their permit requirements.
Improvements Needed to Existing System
No additional improvements are needed at the existing lagoon. The system was
constructed to be able to discharge the settled water. This alternative is a zero cost
option.
Combination of Alternatives
No other alternatives other than direct discharge are feasible or practical. The City
has been set up to discharge their settled water from the lagoon and has operated
this way for over 15 years. No combinations of alternatives are feasible or practical at
this tune either.
Summary
The City of Thomasville has an existing alum sludge lagoon to treat and store the
alum sludge generated by the City's water treatment plant. The lagoon was initially
permitted as a non -discharge facility but operators were instructed to operate the
facility by decanting the settled water from the lagoon to the surface. This has been
the way the facility was operated for over 15 years. State inspections did not detect
this situation and when the City was informed that they might be in violation of their
permit they contacted the State Winston-Salem Regional Office to notify them and
request assistance to correct the situation and come into compliance. The quickest
and most cost effective disposal technique is a surface discharge system. The only
other feasible system is a land application system but is present value cost is
calculated at $475,346. The City of Thomasville respectfully requests the processing
of this application for an NPDES permit and will be glad to provide you with any
additional information you need.
5

City of Thomasville January 19, 2006
Appendix
A. Site Map
B. Laboratory Analysis of Lagoon Effluent
C. Laboratory Analysis of Alum Sludge

City of Thomasville
January 19, 2006
Appendix A
b

4vE
•
Copyright O 2000 DeLorate. TopoTools Advanced Print Kit ICE. Scale: 1 : 24,000 Zoom Level: 13-0 Datum: NAD27

City of Thomasville
January 19, 2006
ro)
(")
Appendix B

•Erdorro ovoguA'lo linwpaTmOd
.O. BOX 7085, 114 OAKMONT DRIVE
GREENVILLE, N.C. 27835-7085
CITY OF THOMASVILLE(WELLS & SLUDGE)
MR. BILLY KING
P.O. BOX 368
THOMASVILLE ,NC 27360
PARAMETERS
Aluminum, ug/I
Iron, ug/I
Turbidity, NTU
Settleable Matter, mill
Alum Analysis Method
Lagoon Date Analyst Code
469 12/19/05 LFJ EPA200.7
234 12/20/05 ADD EPA236.1
6.3 12/15/05 JKD SM2130B
<0.1 12/15/05 JKD SM2540S
PHONE [phone]
FAX [phone]
Drinking Water ID: 17715
Wastewater ID: 10
ID#: 322 B
PO #F36349
DATE COLLECTED: 12/14/05
DATE REPORTED : 12/27/05
REVIEWED BY: !�
Laboratory Analyses — Environmental Consultants

(0111
City of Thomasville
Hamby Creek WWTP Laboratory
Analytical Results Report
Sample Submitted by: Misty Conder
Collection Location: Thomasville Water Plant — Alum Lagoon
Collection Date: 12/14/05
Collection Time: 14:20, 14:22 PM grab
Date Received: 12/14/05
Received By:
MC
Results
Units
Analyst
Test Procedure
Analysis Date/ Time
Temperature
1
12/14/05
14:22
4.5
°C
MC
pH
12/14/05
14:22
7.1
SU
MC
Conductivity
uhoms
Dissolved Oxygen
mom'
Residual Chlorine
1
12/14/05
14:20
BDL
mg/L
MC
Fecal Coliforms
_
CFU/100
ml
Total Susp. Solids
1
12/20/05
14:55
_
5.60
mg/L
MC
BOD
Phosphorus
•
Ammonia
Results Reviewed By:
A 6,01,
Laboratory Supervisor
Report Date: 12-30 - 0 5
NC Division of Water Quality Laboratory
Certification Program Certificate #92

IEEMIEToa]ag Flo DEc ©u(Dwaa4
.'.0. BOX 7085, 114 OAKMONT DRIVE
GREENVILLE, N.C. 27835-7085
CITY OF THOMASVILLE(WELLS & SLUDGE)
MR. BILLY KING
P.O. BOX 368
THOMASVILLE ,NC 27360
PARAMETERS
Aluminum, ugh
Iron, ug/1
Turbidity, NTU
Settleable Matter, ml/I
^.
Alum Analysis Method
Lagoon Date Analyst Code
895 12/22/05 LFJ EPA200.7
391 12/28/05 ADD EPA236.1
7.3 12/20/05 JKD SM2130B
<0.1 12/20/05 JKD SM2540S
PHONE [phone]
FAX [phone]
Drinking Water ID; 37715
Wastewater ID: 10
ID#: 322 B
PO#: F36398
DATE COLLECTED: 12/19/05
DATE REPORTED : 12/30/05
REVIEWED BY:,Z...._________—
Laboratory Analyses — Environmental Consultants

City of Thomasville
Hamby Creek WWTP Laboratory
Analytical Results Report
Sample Submitted by: Misty Conder
Collection Location: Thomasville Water Plant — Alum Lagoon
Collection Date: 12/22/05
Collection Time: 13:25. 13:28 PM grab
Date Received: 12/22/05
Received By:
MC
Test Procedure
Analysis Date/ Time
Temperature
1
12/22/05
13:25
pH
Conductivity
Dissolved Oxygen
Residual Chlorine
1
Fecal Coliforms
Total Susp. Solids
1
BOD
Phosphorus
Ammonia
Results Reviewed By:
1) . 4,-,c1,
Laboratory Supervisor
Results
6.4
7.3
(0.04)
BMDL
5.40
Units
°C
SU
uhoms
mg/L
mg/L
CFU/100
ml
mg/L
Analyst
MC
MC
MC
MC
Report Date: /1 3 0 -OS"-
NC Divbion of Water Quality Laboratory
Certification Program Cert ficate #92

EEL&C)REM Flo DMW?(DKAO
.0. BOX 7085, 114 OAKMONT DRIVE
GREENVILLE, N.C. 27835-7085
CITY OF THOMASVILLE(WELLS & SLUDGE)
MR. BILLY KING
P.O. BOX 368
THOMASVILLE ,NC 27360
PARAMETERS
Aluminum, ug/I
Iron, ug/I
Turbidity, NTU
Settleable Matter, ml/I
Alum Analysis Method
Lagoon Date Analyst Code
1196 12/30/05 LFJ EPA200.7
448 01/02/06 ADD EPA236.1
7.6 12/29/05 JKD SM2130B
<0.1 12/29/05 JKD SM2540S
PHONE [phone]
FAX [phone]
Drinking Water ID: 37715
Wastewater ID: 10
ID#: 322 B
DATE COLLECTED: 12/28/05
DATE REPORTED : 01/03/06
REVIEWED BY: `
Laboratory Analyses — Environmental Consultants

City of Thomasville
Hamby Creek WWTP Laboratory
Analytical Results Report
Sample Submitted by: N isty Conder
Collection Location: Thomasville Water Plant — Alum Lagoon
Collection Date: 12/30/05
Collection Time: 14:52, 14:54, 14:57 PM grab
Date Received: 12/30/05
Received By:
MC
Test Procedure
Analysis Dote/ Time
Temperature
1
1
Conductivity
Dissolved Oxygen
Residual Chlorine
1
12/30/05
14:57
Fecal Colifonns
Total Susp. Solids
1
BOD
Phosphorus
Ammonia
Results Reviewed By:
6-066-%
• Laboratory Supervisor
Results
9.5
7.0
0.09
3.80
Units
°C
SU
uhoms
mg/L
mg/L
CFU/100
ml
mg/L
Analyst
MC
MC
MC
MC
Report Date:
NC Division of Water Quality Laboratory
Certification Program Certificate #92

Jdll•iJ. LUVU .vvnm �,. ........_..
EWthiaOZOOKAit Flo [luivoQpareAsd
• :: •0 7085, '114•c7AK NT DRIVE
.OREENVILLE; N.C.27835-7085...
CITY OF THOMASVILLE(WELLS & SLUDGE)
MR. BILLY KING
P.O. BOX 368
THOMASVILLE ,NC 27360
Atum Analysts Method
PAI Al4 tTERS a;odtl'' l ` l H bale Analyst Code
Aluminum, ug/1
Iron, ugh
Turbldltil NTU
Settleable Matter, m1/1
a
•
749 � 0>>/09/06' ' L1J EPA200.7
257 01/10/06 ADD EPA236.1
5.6 01/05/06 JKD SM213013
<0.1 01/05/06 JED SM2540S
t^V" ' : A tin-r.fluur'Derv,r,....
.} �'. ')' -4 Ai» yr f +'.M���tn' i 1 i+r.:. ....,•PLC
,
PHONE. (252) ,75'6-6208. ,
' ', FAX (252) '755-0633
Drinking Wattr ID. 37715
Wastewater IDt 10
ID#: 322 B
PO#: F36564
DATE COLLECTED: 01/04/06
DATE REPORTED s 01/12/06
REVIEWED 1Y:
Laboratory Analyses -- Environmental Consultants
ii 1 C

Sample Submitted by:
Collection Location:
City of Thomasville
Hamby Creek WWTP Laboratory
Analytical Results Report
Misty Conder
Thomasville Water Plant — Alum Lagoon
Collection Date: 1/6/06
Collection Time: 11:05, 11:08, 11:11 AM grab
Date Received: 1/6/06
Received By:
MC
Test Procedure
Analysis Date/ Time
Temperature
1/6/06
11:05
pH
1/6/06
11:05
Conductivity
Dissolved Oxygen
Residual Chlorine
Fecal Coliforms
1/6/06
11:08
Total Susp. Solids
1/6/06
17:00
BOD
Phosphorus
Ammonia
Results
6.1 •
7.2
BDL (0.04)
6.00
Units
°C
SU
uhoms
mg/L
mg/L
CFU/100
ml
mg/L
Analyst
MC
MC
MC
MC
Results Reviewed By:
Laboratory Supervisor
Report Date:
NC Division of Water Quality Laboratory
Certification Program Certificate #92

City of Thomasville
January 19, 2006
(0.)
(0k)
Appendix C

PARADIGM ANALYTICAL LABORATORIES, INC.
rdit
Client Sample ID: Sludge Sample
Client Project ID: 322A-City of Thomasville
Lab Sample ID: G239-501-2A
Lab Project ID: G239-501
Compound
Benzene
2-Butanone (MEK)
—Carbon tetrachloride
..Chlorobenzene
...Chloroform
—1 ,4-Dichlorobenzene
1,1-Dichloroethane
,•.1 ,2-Dichloroethane
Tetrachloroethene
Trichloroethene
«Vinyl chloride
4-Bromofluorobenzene
1 ,2-Dichloroethane•d4
Toluene-d8
Comments:
Flags:
BQL = Below Quantitation Limits.
Result
MG/L
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
Resuits for Volatiles
by GCMS 8260E TCLP.
Quantitation
Limit MG/L
0.0100
0.250
0.0100
0.0100
0.0100
0.0100
0.0100
0.0100
0.0100
0.0100
0.0100
Spike
Added
0.01
0.01
0.01
Page 1 of 1
Spike
Result
0.00935
0.00917
0.00978
Analyzed By:
Date Collected:
Date Received:
Matrix:
EKR
11/10/2004 10:10
11/12/2004
Leachate
Dilution Date
Factor Analyzed
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
10 11/20/2004
Percent
Recovered
94
92
98
Reviewed By:\A",
2 of 8
N.C. Certification #481 S.C. Certification #99029

PARADIGM ANALYTICAL LABORATORIES, INC.
Results for Semivolatiles
by GCMS 8270-TCLP
Client Sample ID: Sludge Sample
Client Project ID: 322A-City of Thomasville
Lab Sample ID: G239-501-3C
Lab Project ID: G239-501
Compound
—1,4-Dichiorobenzene
2,4-Dinitrotoluene
--Hexachlorobenzene
-- Hexachiorobutadiene
— Hexachloroethane
2-Methy!phenol
3- & 4-Methyiphenol
'Nitrobenzene
—Pentachiorophenol
—Pyridine
—2,4,5-Trichlorophenol
2,4,6-Trichlorophenol
2-Fluorobiphenyl
2-Fluorophenol
Nitrobenzene-d5
Phenol-d6
2,4,6-Tribromophenoi
4-Terphenyi-d14
Comments:
Flags:
BQL = Below Quantitatlon Limits.
Result
mg/L
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
Quantitation
Limit mg/L
0.010
0.010
0.010
0.010
0.010
0.010
0.010
0.010
0.050
0.010
0.010
0.010
Spike
Added
10
10
10
10
5
10
Page 1 of 1
Spike
Result
9.2
9.2
9.6
9.1
4.7
9.2
Analyzed By:
Date Collected:
Date Received:
Date Extracted:
Matrix:
MRC
11/10/2004 10:10
11/12/2004
11/18/2004
Leachate
Dilution Date
Factor Analyzed
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
1 11/22/2004
Percent
Recovered
92
92
96
91
93
92
Reviewed By: ‘
3 of 8
N.C. Certification #481 S.C. Certification #99029

PARADIGM ANALYTICAL LABORATORIES, INC.
Results for Pesticides
by EPA 8081
Client Sample ID: Sludge Sample
Client Project ID: 322A-City of Thomasville
Lab Sample ID: G239-501-3F
Lab Project ID: G239-501
Compound
gamma-BHC (Lindane)
--Heptachlor
Heptachlor epoxide
Endrin
Methoxychlor
—Toxaphene
Chlordane
Surrogate Spike Recoveries
TCMX
Comments:
BQL = Below Quantitation Limit
Analyzed By: CLP
Date Collected: 11-10 200410:10
Date Received: 11-12 200410:06
Date Extracted
Matrix: Leachate
Result Quantitation
mg/L Limit mg/L
BQL 0.040
BQL 0.004
BQL 0.004
BQL 0.002
BQL 0.100
BQL 0.050
BQL 0.003
Spike
Added
Dilution Date
Factor Analyzed
1 11-23-2004
1 11-23-2004
1 11-23-2004
1 11-23-2004
1 11-23-2004
1 11-23-2004
1 11-23-2004
Spike Percent
Result Recovered
100 82.8 82.8
Reviewed By:
il‘ 4,,)
4 of 8
N.C. Certification #481 S.C. Certification #99029

PARADIGM ANALYTICAL LABORATORIES, INC.
Results for TCLP Herbicides
by EPA 8151
Client Sample ID: Sludge Sample
Client Project ID: 322A-City of Thomasville
Lab Sample ID: g239-501.31
Lab Project ID: G239-501
Compound
t-2,4-D
2,4,5-TP(Silvex)
f
Analyzed By:
Date Collected:
Date Received:
Matrix:
Result Quantitation
mg/L Limit mg/L
BQL 1.00
BQL 0.100
CLP
11/10/2004 10:10
11/12/2004
Leachate
Dilution Date
Factor Analyzed
1 12/01/2004
1 12/01/2004
Reviewed By:
N.C. Certification #481 S.C. Certification #99029
5 of 8

PARADIGM ANALYTICAL LABORATORIES, INC.
Client Sample ID:
Client Project ID:
Lab Sample ID:
Lab Project ID:
Batch ID:
Metals
TCLP
Arsenic
— Barium
—Cadmium
Chromium
— Lead
•- Mercury
— Selenium
— Silver
Results for Metals
Sludge Sample
322A-City of Thomasville
G239-501-3
G239-501
2024 2042
Result RL
BQL 0.200
BQL 5.00
SQL 0.100
0.126 0.100
BQL 0.100
BQL 0.000500
BQL 0.200
BQL 0.100
Comments
BQL = Below Quantitation Limits
OF = Dilution Factor
J = Between MDL and RL
Analyzed By:
Date Collected:
Date Received:
Matrix:
PSW
11/10/2004 10:10
11/12/04
Leachate
DF Units Method Date
Analyzed
1 MG/L 6010B 11/26/04
1 MG/L 6010B 11/26/04
1 MG/L 60108 11/26/04
1 MG/L 6010B 11/26/04
1 MG/L 6010B 11/26/04
1 MG/L 7470 11/24/04
1 MG/L 6010B 11/26/04
1 MG/L 6010E 11/26/04
Reviewed By:
8 of 8
N.C. Certification #481 S.C. Certification #99029

CSC.' C7;/
CITY OF THOMASVILLE
P.O. Box 368
Thomasville, North Carolina 73 -Q368
T. 14753422? ., ,� ,,. ._Wr:
Office of City Manager
30
Mr. Steve Tedder
Water Quality Supervisor
DENR
Division of Water Quality
585 Waughtown St.
Winston-Salem, NC 27107
\ I INCORPORATED 1857
RECEIVED
N.C. De::!. of ENR
NOV 2 3 2005
W n t:n•SJIe,^;
Regicnal Office
RE: Notice of Violation - Thomasville Water Treatment Plant Waste Sludge Lagoon
Dear Mr. Tedder:
This letter is in response to the Notice of Violation Dated November 1, 2005
concerning the discharge from our water treatment plant waste sludge lagoon. We are
requesting that the Notice of Violation be rescinded due to the following special factors
involved.
1.
2.
3.
4.
The specifications for the construction of the facilities discuss its
operation. This document describes the operation and states that the
solids will be settled and the liquid layer of clear water and storm water
will be discharged from the disposal areas by means of telescoping valves.
The lagoon has been operated in the same manner since its
installation and inspections by the State did not indicate that it was not
being operated correctly. We believe that the discharge of the clear
supernatant was permitted based on our understanding of CDM's design
and operation of the system.
When our present engineer informed us that discharges were not
allowed with a non -discharge permit, we immediately informed the State
and requested help to resolve the situation.
The lagoon was being monitored by water treatment plant
operators and they were not familiar with non -discharge permits. Their
experience with other facilities was that they discharged their
supernatants to a stream.
The lagoon was designed by CDM and has been operated by the City of Thomasville
since 1985. The State issued a Permit No. 12378 based on CDM's design. Since no one
currently on staff was present when the sludge lagoon was put into operation; we have
presumed that the lagoon has been operated similarly from its installation. We know that it
has been operated in its current manner for the past 15 years. Based on our discussion with

the design engineer, they understood that the clear supernatant water would be discharged
away from the site. We have attached a copy of CDM's correspondence and specifications
which states this understanding. The design engineer has stated that they had at least two
meetings with the State and discussed the design and operation of these facilities, and it was
everyone understanding that the supernatant was clean enough that it could be discharged
from the lagoon. It was our understanding that at the time the permit was written, the
discharge of the "waste" meant the alum sludge solids and not the supernatant.
The plans indicate 2 phases for this project. The first phase includes a 2.1 acre
lagoon and phase 2 proposed a 4.3 acre lagoon. The second phase lagoon has not been
constructed. The City was waiting for the first lagoon to fill with alum sludge. When the
current water treatment plant superintendent was hired, the decant valve was decanting
water at the time and he assumed that that was how the system worked.
The lagoon has been inspected by the State and no problems were found with their
operation. Since no problems were mentioned about the operation and all of the
monitoring tests have been incompliance with permit requirements, the water treatment
plant operators thought that they were operating the lagoon correctly. Our operators are
familiar Lexington's water treatment plant and that it discharges its waste sludge supernatant
to a creek. They didn't know that they should be operating their lagoon differently.
Our new permit required two new gauge boards be installed at the lagoons and be
certified by a professional engineer. After our engineer looked at the lagoon site to
determine the placement of the gauge boards, he informed us that the discharge to a creek
was not permitted with a non -discharge permit. We immediately had him contact the
Winston-Salem Regional Office and inform you of the situation and to request your
assistance in resolving the issue.
When Mr. Steve Mauney inspected the lagoons, he told us that we needed to close
the decant valve and to start pursuing other options to dispose of our supernatant. We
closed the valve and started investigating obtaining a discharge permit for our facility. We
also requested help in what alternatives we had until another permit could be obtained since
it was evident that the lagoon would be full and over spilling its banks in a few weeks. Ms.
Sherri Knight and Mr. Steve Mauney returned to the site and informed us that we would
probably not get a discharge permit and to look for other alternatives.
The treatment plant staff was able to locate the old valves that originally directed the
backwash water to the City's wastewater treatment plant. They now use the old sludge
holding basin to decant the supernatant and pump it to the wastewater treatment plant. The
wastewater treatment plant superintendent was afraid that that they could adequately handle
the solids and did not want to receive the alum sludge. Therefore, the water treatment plant
sludge is still being pumped to the waste sludge lagoon. This will delay the filling of the
sludge lagoons but we predict that the lagoon will be filled within six months or less.
In summary, we believe that the original intent of the permit was to allow the
discharge of supernatant from the lagoon. We have been operating the lagoons in this
manner from the beginning, and the State inspections have never indicated a problem with
this. When it was brought to our attention that a discharge is not allowed under a non-

discharge permit, it was immediately reported to the State and has been temporarily
corrected. We therefore request that the Notice of Violation be rescinded and that we
proceed with alternative to resolve the operation of our lagoons and the requirements of the
state. Out water treatment staff prides itself on their record of operation and wants to work
this out to everyone's satisfaction.
We are concerned that the lagoon will fill up shortly and even if we construct the
second lagoon and predict that it will fill up within a year or less. Therefore, the time frame
for correcting this is short and request your assistance in providing a long term solution to
this situation. We look forward to hearing from you and working with you to resolve this
problem.
Yo rs truly,
lly C . ver
Assistant City ' anager
City of Thomasville

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CITY OF THOMASVILLE
NORTH CAROLINA
TECHNICAL SPECIFICATION
ALUM SLUDGE DISPOSAL FACILITY
April 1985
CAMP DRESSER & McKEE
ENVIRONMENTAL ENGINEERS
RALEIGH, NORTH CAROLINA

6092-2
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FORWARD TO REVIEW AND PERMITTING AGENCIES
The City of Thomasville intends to construct a facility for the long-term
disposal of alum sludge generated by the City's water treatment plant. The
City believes the facility specified herein and shown on the Drawings will
provide a method of disposing of the alum sludge in an environmentally
safe, economical, and reliable manner. This method of alum sludge disposal
was recommended to the City by Camp Dresser & McKee as a result of
investigating numerous alternatives in an engineering study of the City's
water treatment plant which was completed in July 1984.
The alum sludge disposal facility will be constructed by the City of
Thomasville. Accordingly, those specification sections addressing bidding
and contract requirements have been omitted from this document.
Two meetings were held in Raleigh at the office of Mr. Gil Vinzani,
Supervisor of the State Engineering Review Group, Division of Environmental
Management, for the purpose of discussing project requirements prior to
beginning design. The second meeting was held on December 18, 1984 and was
attended by Mr. Vinzani, Mr. Arthur Muberry of the Division of
Environmental Management, and Mr. John Roberts of Camp Dresser & McKee.
Following are two letters and an attachment which were hand delivered to
Mr. Vinzani by Mr. Roberts.
Based on the results of the filtrate water quality from the alum sludge
sand drying beds at the water plant, results of the EPA toxicity on
leachate from a sample of water plant sludge, and general discussions
concerning the proposed project site and construction and operation of the
alum sludge disposal facility, Mr. Vinzani and Mr. Muberry recommended that
the City of Thomasville prepare design plans and specifications for the
proposed facility and submit them to the North Carolina Department of
Natural Resources and Community Development.
1

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CD.;
environmental engineers, sciunli t$.
planers, a management consuilants
December 18, 1984
Mr. Gil Vinzani, Supervisor
State Engineering Review Group
Division of Environmental Management
P.O. Box 27687
Raleigh, North Carolina 27611
CAMP DRESSER & McKEE
3725 National Drive. SuiRO 220
P. O. Sox 31565
Raleigh, North Ca etina 27622
019 787•5020
City of Thomasville, N.C.
Disposal of Water Plant Sludge
Dear Mr. Vinzani;
Thank you for meeting with Roger Bryant and me on November 13 to discuss
the City of Thomasville`s proposed method of diposing water plant sludge.
Enclosed is a letter from Roger Bryant to me which summarizes testing of
the filtrate water quality from the sand drying beds at the water plant.
Also included are the results of the EPA toxicity on leachate from a
sample of water plant sludge. We are also delivering samples of the
water plant sludge which consist of varying degrees of percent solids.
The sludge sample in the jar was taken from the bottom ofrom the sand
f the
sludge
holding tank. The sample in the plastic bag was removed
drying beds. The solid block of sludge is a result of allowing the
sludge to dry over a long period of time. We feel the dry block of
sludge is representative of the nearlyimpermeable layer which will be
formed if the sludge is spread in a thin layer in the Ci ty s proposed
disposal area and allowed to dry. We left a piece of the dried sludge in
a cup of water for several days and it does not appear to have a tendency
to dissolve or absorb water to any great degree.
The City is currently spreading alum sludge in a controlled manner on a
very small parcel of the proposed water plant sludge disposal area.
These pilot test procedures are being documented so we may better design
and operate the disposal facility in an environmentally safe manner.
The City of Thomasville is very anxious to learn what additional steps
.may be required in order to permit their proposed water plant sludge
disposal facility. The option they have purchased on the parcel of land
intended for sludge disposal will expire in the not too distant future.

sown' vrm MM 1 1 MOO
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Mr. Gil Vinzani
December 18, 1984
Page Two
CAMP DRESSER & McKL:
Accordingly, your prompt review and evaluation of the information sub-
mitted will be greatly appreciated. We are ready to meet with you at'
your convenience to discuss what additional procedures might be required
in order to allow permitting of the disposal facility.
Please contact me if you have any questions.
Sincerely yours,
CAMP DRESSER & M KE
hn L. Roberts, P.E.
sociate
JLR/jmp
Enclosures
cc: Mr. Roger G. Bryant
Utilities Director
City of Thomasville

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af roTtlommeiTubt
Thomasville, North Carolina 27:360
WM& CT' 3, 1 9 4
Mr. John Roberts P. E.
Camp Dresser and McKee
3725 National nrivw, Suite 270
P, O. atx: .315S5
Raleigh, North Carolina 2762.2
Re: Pei...wits of Testing:, Water Plant Sludge
Delir Mr. Roberts:
We havtie completod the Lasting of the filtrate water from the sand
drying beds at the water plant. The results are as' follows:
Piwametor
Cd
Al
Cr
CLI
Pb
Ni
Zn
Fe
CA
Mn
MG
Na
D. Oxygen
T.S.S.
Hardness
Chlorine Residual
Turbidity
Conductivity
NH3-N
Total Solids
ConcentrRtion 611o/1)
< 0.1
< 0.1
0.1
< 0,1
< 0.3
< 0.1
<
0.1
11.S
1.5
6,6
10.4
0.0
1.5 (ntu)
175 (mhos)
None
214
Also included are the results crF the leachate EPA/Toxicity which wti.
had done Oh sample oi the alum sludge, Please forward the
oppropriate results to the gentlemen in Raleigh and let me know
may dti.sire.
iHrther trest 1-J114.,
SinCrely,
/1
• • , ....
.r\ f.:--e,( /7-.ritte..„
Rotjer Brvanf....•
UtiliLic,pia Dira.ctor

Leachate%EPA Toxicity on Water Plant Sample
tab Sample 044734
Arsenic (ppm)
Barium (ppm)
Cadmium (ppm)
Chromium (ppm)
Lead (ppm)
Mercury (ppm)
Selenium (ppm)
Silver (ppm)
Lindane (ppm)
Endrin (ppm)
Methoxychlor (ppm)
Toxaphene (ppm)
2,4-D (ppm).
Silvex (ppm)
.0016
.142
<.00025
<.0025
<.0025
.00016
.0026
<.0025
<.0001
<.0001
<.0001
<.0005
<.0005
<.0005
Alum Sfaccje
gggE7,%13 •
JUL 27 1902
cm' 1F T014 SVILLE

6092-2
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DIVISION
TABLE OF CONTENTS
ALUM SLUDGE DISPOSAL FACILITY
FOR
CITY OF THOMASVILLE, NORTH CAROLINA
0 - BIDDING AND CONTRACT REQUIREMENTS
DIVISION 1 -
01010
01015
01030
DIVISION 2
02115
02210
02221
02222
02260
02276
02486
02600
DIVISION 3
GENERAL REQUIREMENTS
Summary of Work
Control of Work
Special Project Procedures
- SITEWORK
(NOT USED)
Clearing, Grubbing,, and Stripping
Site Grading
Excavation, Sackf i l l, and Fill
ABC Stone and #67 Stone
Finish Grading
Erosion and Sedimentation Control
Loaming, Seeding, and Mulching
Piping Work
- CONCRETE
03300 Concrete
DIVISION 4 - MASONRY (NOT USED)
DIVISION 5 METALS (NOT USED)
DIVISION 6 - WOOD AND PLASTICS
06100 Rough Carpentry
DIVISION 7 - THERMAL AND MOISTURE PROTECTION (NOT USED)
DIVISION 8 - DOORS AND WINDOWS (NOT USED)
DIVISION 9 - FINISHES (NOT USED)
DIVISION 10 - SPECIALTIES (NOT USED)
DIVISION 11 - EQUIPMENT (NOT USED)
DIVISION 12 - FURNISHINGS (NOT USED)
DIVISION 13 - SPECIAL CONSTRUCTION (NOT USED)
TC-1

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6092-2
UllUllaaiu 1—uoo r.uuniuit r—ona
TABLE 'OF CONTENTS
(Continued)
DIVISION 14 - CONVEYING SYSTEMS (NOT USED)
DIVISION 15 - MECHANICAL
15100 Valves and Appurtenances
DIVISION 16 - ELECTRICAL (NOT USED)
APPENDIX
Standard Details

WI I VI I V V I V I VVV I• V 1 V/ V l r I V V V
6092-2
SECTION 01010
SUMMARY OF WORK
PART 1: GENERAL
1.01 LOCATION OF WORK
All of the work of this Project is located in rights -of -way or
easements within Davidson County, North Carolina, and on property
which will be owned by the City of Thomasville.
1.02 WORK TO BE DONE
A. The City shall furnish all labor, materials, equipment, tools,
services, and incidentals to complete all work required by these
Specifications and as shown on the Drawings which is described as
follows:
The water treatment plant alum sludge disposal facility will be
completed in two phases utilizing the same methods of construction,
materials, and equipment. Earthwork on the project site will be
required to form two disposal areas. The disposal areas will have
flat bottoms with Phase 1 having an approximate area of 2.05 acres
and Phase 2 having an approximate area of 4.2 acres. Each disposal
area has a depth of 10 feet. All disturbed areas of the site,
except the flat disposal area bottoms, will be seeded and mulched to
prevent erosion.
Access roadways to the site will be constructed including pull -off
areas adjacent to State Road 2022. A tanker truck will use the
pull -off areas to discharge the liquid alum sludge into the
receiving stations. The receiving stations consist of sloped
concrete pads encasing 6-inch diameter pipe. The pipe will allow
gravity flow of the liquid alum sludge from the tanker truck into
the disposal area.
The solid portion of the liquid alum sludge will settle in the
disposal area forming a distinct boundary layer between the solid
alum floc portion of the sludge and the upper layer of clear water.
The upper water portion layer of the liquid alum sludge along with
stormwater will be discharged from the disposal areas by means of
telescoping valves. The telescoping valves will always be locked in
their highest position unless lowered by a City staff person to
decant water. Water shall only be discharged from the disposal
areas slowly on calm days when the upper layer of water is free of
alum floc particulate.
The telescoping valves will be located at the end of 20 foot long
piers constructed from the top of the disposal area embankment to
the valve location.
01010-1

6092-2
B. The City shall perform the work complete, in place, and ready for
continuous service,. and shall include repairs, replacements, and
restoration required as a result of damages caused during this
construction.
C. Furnish and install all materials, equipment, and labor which is
reasonably and properly inferable and necessary for the proper
completion of the work, whether specifically indicated in the
Contract Documents or not.
1.03 ABBREVIATIONS AND REFERENCES
A. Whenever reference is made to the furnishing of materials or testing
thereof to conform to the standards of any technical society,
organization or body, it shall be construed to mean the latest
standard, code, specification, or tentative specification adopted
and published at the date of the start of construction even though
reference has been made to an earlier standard. The following list
of specifications is hereby made a part of the Project the same as
if herein repeated in full. In the event of any conflict between
any of these specifications, standards, codes, or tentative
specifications, and the Specifications, the more stringent shall
govern. In the event that one of the following conflict with
another, the decision as to which shall govern will be decided by
the Engineer, whose judgement will be final.
B. Reference to a technical society, organization, or body may be made
in the Specifications by abbreviations, in accordance with the
following list:
AASHTO - The American Association of State Highway and Trans-
portation Officials
ACI - American Concrete Institute
AGA - American Gas Association
AISC - American Institute of Steel Construction
AISI - American Iron and Steel Institute
ANSI - American National Standards Institute
API - American Petroleum Institute
ASCE - American Society of Civil Engineers
ASME - American Society of Mechanical Engineers
ASTM - American Society of Testing Materials
AWS - American Welding Society
AWWA - American Water Works Association
CIPRA - Cast Iron Pipe Research Association
DIPRA - Ductile Iron Pipe Research Association
FED. SPEC. - Federal Specifications
IEEE - Institute of Electrical and Electronic Engineers
NCOOT - North Carolina Department of Transportation
NCPI - National Clay Pipe Institute
NEC - National Electric Code
NEMA - National Electrical Manufacturers Association
NFPA - National Fire Protection Association
OSHA - Occupation Safety and Health Act
SAE - .Society of Automotive Engineers
01010-2

YYY 1 • Y I lit Y I r 1 YYY
6092-2
SBC - Standard Building Code Congress International, Inc.
SSPC - Steel Structures Painting Council
U.L., Inc. - Underwriter's Laboratories, Inc.
C. When no reference is made to a code, standard, or specification, the
standard specifications of the ASTM, the ANSI, the ASME, the IEEE,
or the ASME shall govern.
PART 2: PRODUCTS (NOT USED)
PART 3: EXECUTION (NOT USED)
END OF SECTION
01010-3