WQ0001346_Regional Office Historical File Pre 2018 (3)

�u�bGtvc� ��rrSt�ay
DIVISION OF WATER QUALITY
GROUNDWATER SECTION
August 22, 1997
MEMORANDUM
To: Kim Colson
Through: Bob Cheek f -�
From: David Goodrich ,
Subject: City of Monroe
Flow Equalization Basin Expansion from 4 MG to 6 MG
Union County
GW97147
(Steve Pellei: DEM SERG Review Engineer)
AUG 26 1997
I?E "F4:,"�
The Groundwater Section is in receipt of the application materials for authorization to
construct an expansion of the existing four million gallon equalization basin to a capacity of six
million gallons at the City's existing wastewater treatment facility (see Figures 1 and 2) . The
proposed expansion will involve excavating soil which is adjacent to the existing basin, grading
and preparing the basin area, and installing a geosynthetic clay liner (GCL) which will serve as
a hydraulic barrier between the groundwater environment and the contents of the equalization
basin. The primary function of the flow equalization basin at this wastewater treatment facility
is to receive the overflow from the filter backwash water. The secondary function of the basin
is to serve to equalize the flow of wastewater (influent) flow during heavy rainfall events.
According to the specifications of the construction contract, the geosynthetic clay liner must
be a composite containing powdered (sodium) bentonite and a geosynthetic backing and/or
facing, reinforced with stitch bonding or needle punching. The maximum allowable permeability
of the liner is 0.000000005 cm/sec (the regulations allow a permeability of up to 0.000001
cm/sec) . In accordance with the manufacturer's specifications and the design of the expansion,
the liner will be buried under 18 inches of (compacted) cover soil. It is the understanding of the
Groundwater Section that the new liner will be sealed to the liner which is already part of the
existing equalization basin.
There do not appear to be any concerns relative to property line setbacks or other buffer
distances at the site, and, given the extremely low permeability of the liner, there should not be
any problems regarding groundwater quality if the construction specifications are met.

There are three deep (over 100 feet) monitor wells near the existing basin which were
evidently installed many (possibly 20 or more) years ago on the initiative of the plant owners.
These wells were evidently not required by the State, and the Groundwater Section feels justified
in not recommending that they be monitored as a condition of this basin expansion. If the wells
are not being used, they should be abandoned in accordance with 15A NCAC 2C .0113.
The Groundwater Section has reviewed the subject permit application and recommends issuance
of the permit with the following conditions:
*1. The interior surfaces of the lagoon shall be completely lined with a 40-mil geosynthetic clay
liner. Following installation and inspection of the lagoon liner, and prior to waste disposal
operations, certification of the liner's compliance with approved construction specifications
and the liner's hydraulic integrity must be provided to the Division of Environmental
Management, Groundwater Section, by the project engineer.
2. Any groundwater quality monitoring, as deemed necessary by the Division, shall be provided.
3. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is for the
disposal system individually permitted after December 31, 1983 is established at either (1) 250
feet from the waste disposal area, or (2) 50 feet within the property boundary, whichever is
closest to the waste disposal area. An exceedance of Groundwater Quality Standards at or
beyond the Compliance Boundary is subject to immediate remediation action in addition to the
penalty provisions applicable under General Statute 143-215.6A(a)(1).
In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the
disposal systems midway between the Compliance Boundary and the perimeter of the waste
disposal area. Any exceedance of standards at the Review Boundary shall require remediation
action on the part of the permittee.
If there are any questions please let me know.
cc: Barbara Christian
Permit Files
--CITYOFMO--
* This language differs from that used in the shell document.
N

90 AV
TII 1� .. 1 -1 ` J;o 1 �C 1 , �,�' ��jl` i •( �i: iv
�-- _ - - �(�• _ 5 _
,.
a •• . � ` //`,J' � 1 , .:-.ram{ � =�^� � ,�(��l�ui
1�/.^ - � � 175j, (� -\l ���•J �j` '���r���,� •©�� i �/ �j`, �r�I
Y !� - (1l
crnxr e. ';, i, �'•oCl (1 i' � ��� � \ � V 1160
YTS � ' � • I, � 1 � � �1J � � f f ® � g I i �';
a� (•
;ice .�� _-�_ � ' �\.=_�,�.C,;i(/f��S'- n � �• •; ,
-onei I I � t, � T. • 1
v� 4 1%� i•• WT s
O1V'tVN;� r'I'c` + sip•,--� t�,
o y - _ ( _ • ice:
� � 191 •� ego �% � ., Q � � yc�/ '� � -_ \\ ' ` � �
570
J.
�_. _�7 / II \� 1 •U�f \•• W', or rove � yp� \
600
10113 - 37 557 \r a,.j (! �. °6q7 ( X6A3-..\
60
c _1 O -!
N i G(errs
,II
1,,. 'H' I,,, 4 \�
SCALE IN FEET (O FIGURE 1 „
0 2,000 4,000 '�� 6cp �' CITY OF MONROE
(� FLOW EQUALIZATION BASIN )�!
EXPANSION FROM 4 MG TO 6 MG
(�.( o •,� 590 \� I UNION COUNTY �(
"00 �, �t f GW9 71 4 7 �L
SITE LOCATION MAP
AA;
;

20
BY THE
NEI
STORAGE TANK:
�EXISTING S. GE
LOADING STATION
LEGEND
BUILDING OR!
I
AERATION
AER47ION
AERATIM
AERAnpI
BASIN I
BASW 2
BASIN 3
01
4
BENCH
,_ Of AS
L
— ------- ----------- - -
PA"
E-4
ASPHALT
CONCRETE SD
FLOW EOUAUZAMON
CONTOUR
•
1
%
FLOW EOUALIZATION BASIN
'T, SPOT ELEVA,
111AIN U­ F,
14 FLOW METER STORM INLE1.
BULD _yAULT SOIL SORI.G
..................... ------
.......... ---------- TREE UI41
O
-------------- ----------
SECI Alt :r
- -- ----------- ------------------ --------
CLARIF -------­---
--- ----- ---- -
OL
ILDING - ----------
Z
................
------------ ---
Lqj
-RAS
- ----------­------------ -----
...............
EXCES EXCAVATED MATERIAL DISPOSAL
AREA MITABLE MATERIAL ONLY)
.............
ISO 300
4-
Scale io fee�Nt
BiR A& FIGURE 2
rc,!, � CITY OF MONROE
iTB "oc nw 't aS; °OS E TIAM AND SA R FLOW EQUALIZATION BASIN
R v
EXPANSION FROM 4 MG TO 6 MG
UNION COUNTY
GW97147
SITE DETAIL MAP

IREVAEW BY
FACILITY NAME
dil i`. �..J+(i.. .".ate.. d.d� J i �.r •'�
DIVISION Cr ENVIRONMENTAL MANACEMEN
RECORD OF WASTE DISPOSAL PERMIT APPLICATION REVIEW
DATE Z11 -7 FIELD INVESTIGATION? (YIN) �
COUNTY
l
LOCATION �,�� ' � -� ✓ / 7 5 � � =;-h-� �-�.�_ .-_
TYPE OF DISPOSAL SYSTEM (LAGOON, ETC.) d DESIGN CAP. (GPD)
DESCRIPTION OF FACILITY ~ `
SM OF UPOUNDMENT (FT. SO.) -- `&)OR SIZE OF APPLICATION AREA
WASTI` SOURCE: MUN. SLUDGE UN. W. WATER: PRIMARY SECONDARY TERTIARY
ND. SLUDGED. WELL WATER --OTHERS:
DISTANCE FROM WASTE SOURCE TO NEAREST: STREAM y FT., WELL J FT
FOR WELL: TYPE OF USE <-' Z� i ' z . DEPTH —PUMP RATE (EST.)
WHAT DESIGN CONDITIONS WILL REDUCEANCREASE CHANCE OF GW CONTAMINATION:
WHAT NATURAL SITE CONDITIONS WILL REDUCEIINCREASE CHANCE OF GW CONTAMINATION:
DEPTH TO: BEDROCK
FT., SEASONAL HIGH W.T. FT., ANNUAL W.T. FLUX FT.
SURFICIAL AQUIFER
BEDROCK/ARTESIAN AQUIFER
GEN. LffHOLOGY
HYD.COND. FTJDAY `MEASURED MEASURED
FTJDAY
ESTIMATED ESTIMATED
THICKNESS FT.
NO. OF MONITER WELLS: PROPOS_'C: UP DOWN ; EXISTING: UP DOWN
FROM WORKSHEE7: S7E NUMERICAL DESCRIPTION■
T 1 2 37 S 6 611 68
rw7E GRADE (NYDROGEOL) U STUATION GRADE -
PROPOSED SAMPLING SCHEDULE & PARAMETER(S):
}LAVE THERE BEEN ANY EXCEEDANCES OF THE GROUNDWATER STANDARDS? YES NO
HAS ANY ENFORCEMENT ACTION BEEN TAKEN? YES NO DATE OF ACTION:
BRIEF SUMMARY OF ENFORCEMENT ACTION TAKEN:
REMARKS/ RECOMMENDATIONS (Continua on reverss, I namsary):�`—
CW-dB Revised 04S4 HYD. REGIONAL SUPERVISOR
0.

r
DIVISION OF WATER QUALITY
August 20, 1997
MEMORANDUM
TO: Dave Goodrich
Through: Barbara ChristianA,c
FROM: Peggy Finley ��.MO
RE: City of Monroe
NC 0024333
Expansion of Flow Equalization Basin
A review of MRO Groundwater Section records revealed that groundwater monitoring
data for three on -site monitoring wells had been submitted from 1987 through 1992. They
are described as observation wells on the well construction records. I spoke with Mr. Kim
Hinson at the treatment plant about the wells and the data, since he had submitted the GW-
59s. He stated that he didn't know why the wells were there. He said that the permit did
not require groundwater monitoring but he submitted that data under his own initiative.
When there was no indication of a groundwater impact after five years, he decided to
discontinue sampling and reporting.
The construction plans for the basin expansion indicate that a geosynthetic liner will
be installed and tied in to the existing bentonite/clay liner. Given the project information
available, if the hydraulic conductivity of this geosynthetic liner meets the requirements of
15A 2H .0219(d), then groundwater impacts should not be a concern.
MAF
dgoodreh. mem

DIVISION OF WATER QUALITY
GROUNDWATER SECTION
J,// zS��Ss7
M E M O R A N D U M
TO: ea_A 3A -A C4A_13 1,#Al
Ile Regional Office -
L
FROM: TJA.-� ,��c�0A-I C,
SUBJECT: App. for Permit Renewal
Permit Amendment
New Permit
r- r r•. OF
i., :CLS
JUL 80 1997
gVIVON OF EAV!2VSM[HT?1 E':ANA!'33_F
14 1L1ftLE 11. AAL BFq
Repair Alteration of Exist. Disposal System [DEH]
Facility Name: C,-r�z to %"LUNRUQ
County:
v ti«„
Type of Project: FyLw C4)4"'Z-zo'telft 73ASi1*.A J�d�
APPLICABLE PERMIT NO.s: WQ GW
DEH
EPA (CONST. GRANTS)
A t0 C /VO "": h5SlS,', <cl
Lilco
The Groundwater Section has received ONLY ONE (1) copy of the
referenced permit application. A copy of the application should have
been sent to your Regional Water Quality Supervisor, so please use
that copy for your review - IF A COPY HAS NOT BEEN RECEIVED IN THE
REGIONAL OFFICE, PLEASE LET ME KNOW.
The Groundwater Section received two (2) copies of the referenced
permit application. One copy of the application documents we
received is attached.
The Groundwater Section has received a subsurface disposal project
from the Div. Env. Health's On -Site Wastewater Section. A copy of
the application has been forwarded to DEH's Regional Soil
Specialist, Please coordinate your review with
that Soil Specialist.
Please review the application materials for completeness. If you feel
additional information is necessary, please let me know no later than
U-.e,1/Z�1sq 7 A copy of any formal request for additional information
wig be forwarded.to you.
If you do not need any additional information., to complete your review,
please provide your final comments by ,q�,/9, 1997 • If you request and/or
receive additional information, your final comments are due no later than
14 days aftar you receive the additional information.
\TRANS.SHL (rev. 6/24/97)

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
February 7, 1997
Mr. Tom Frederick, P.E., Director of Water Resources
City of Monroe
Post Office Box 69
Monroe, North Carolina 28111-0069
Dear Mr. Frederick:
A4
[DEHNR
f1 NATURAL
FEB 10 1997
OIWIBiC.N Gf E1r'""" T'l "M'77.,IE14T
Subject: Permit No.-ACE024333
Authorization to Construct
City of Monroe
Wastewater Treatment Facility
Union County
A letter of request for an Authorization to Construct was received on December 17, 1996, by the
Division of Water Quality and final plans and specifications for the subject project have been reviewed and
found to be satisfactory. Authorization is hereby granted for the construction of new wastewater biosolids
handling equipment consisting of a three million gallon sludge storage tank with two 200 HP blowers, two
75 GPM centrifuge cake pumps, a 250 GPM sludge transfer pump and a 700 GPM truck loading sludge
pump.
This Authorization to Construct is issued in accordance with Part III paragraph C of NPDES
Permit No. NC0024333, issued November 14, 1994, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations specified in
Permit No. NC0024333.
The residuals generated from these treatment facilities must be disposed in accordance with G.S.
143-215.1 and in a manner approved by the North Carolina Division of Water Quality.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective actions, including those that may be required by
this Division, such as the construction of additional or replacement wastewater treatment or disposal
facilities.
The Mooresville Regional Office, telephone number [phone] shall be notified at least forty-
eight (48) hours in advance of operation of the installed facilities so that an in -place inspection can be
made.. Such notification to the regional supervisor shall be made during the normal office hours from 8:00
a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been installed in
accordance with the NPDES Permit, this Authorization to Construct, and the approved plans and
specifications. Mail the Certification to the Water Quality Permits and Engineering Unit, P.O. Box 29535,
Raleigh, NC 27626-0535.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
Upon classification of the facility by the Certification Commission, the Permittee shall employ a
certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment
facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the
classification assigned to the wastewater treatment facilities by the Certification Commission. The
Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with
the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class II, III, and IV facility at least daily, excluding weekends and holidays, and
must properly manage and document daily operation and maintenance of the facility and must comply with
all other conditions of Title 15A, Chapter 8A, .0202. Once the facility is classified, the Permittee must
submit a letter to the Certification Commission, which designates the operator in responsible charge,
within thirty days after the wastewater treatment facilities are 50% complete.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Water Quality in accordance with North Carolina
General Statute 143-215.6(a) to 143-215.6(c).
The issuance of this Authorization to Construct does not preclude the Permittee from complying
with any and all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information, please contact Rick Moore telephone number [phone]
extension 527.
Sincerely,
Preston ard, Jr., P.E.
cc: Union County Health Department
Mooresville Regional Office, Water Quality Section
ater Section
Bob Cheek, Groundwater Section, Central Office
Training and Certification Unit (no revised rating)
Facilities Assessment Unit

Permit No. ACE024333
Authorization to Construct
February 7, 1997
ENGINEER'S CERTIFICATION
I, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project,
Project Name
Location
for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of this permit, the approved plans and specifications, and other supporting materials.
Signature
Date
Registration No.

NORTH CAROLINA DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY DEVELOPMENT
DIVISION OF ENVIRONMENTAL MANAGEMENT - GROUNDWATER SECTION
P.O. BOX 27687 - RALEIGH,N.C. 27611, PHONE [phone]
WELL CONSTRUCTION RECORD
FOR OFFICE USE ONLY
Quad. No. Serial No.
Lat. Long. Pc
Minor Basin
Basin Code
Header Ent. GW-1 Ent.
DRILLING CONTRACTOR lassi ter Well 1 ComT nit_ Tnc,
STATE WELL CONSTRUCTION
DRILLER REGISTRATION NUMBER 454 PERMIT NUMBER:
1. WELL LOCATION: (Show sketch of the location below)
Nearest Town: Monroe County: Union
Monroe S_waae Treatment Plant
(Road, Community, or Subdivision and Lot No.)
2. OWNER City of Monroe
ADDRESS Monroe,
(Street or Route No.)
North Carolina
City or Town State Zip Code
3. DATE DRILLED 12_16-85 USE OF WELL observation
4. TOTAL DEPTH 120 r CUTTINGS COLLECTED JRYes ❑ No
5. DOES WELL REPLACE EXISTING WELL? ❑ Yes x❑ No
6. STATIC WATER LEVEL: RS 1 FT. ❑ above TOP OF CASING,
41 Lc below
TOP OF CASING IS FT. ABOVE LAND SURFACE.
7. YIELD (gpm): 1 9t PP METHOD OF TEST Pumping
8. WATER ZONES (depth): 651 to 1201 Minor Infiltration
No specific zones
9. CHLORINATION: Type HTH Amount 50 PPM
10. CASING:
Wall Thickness If additional space is needed use back of form.
Depth Diameter or Weight/Ft. Material LOCATION SKETCH
- To Ft. Grouted 211 casing from (Show direction and distance from at least two State Roads,
-To Ft. 551 to surface or other map reference points)
- To Ft.
DRILLING LOG
Formation Description
Yellow Clay -Slate mixed
Slate (Yellow)
Slate and speckled granite
Granite
From
From
From
11. GROUT
Depth Material
From O To5LFt. Ctament
From To Ft.
12. SCREEN:
Depth
From
To
0-20
201 to
301
30' to
801
801 to
1201
Method
tremi a pipe
Depth Diameter Slot Size Material
From 113 To 116 Ft. 2" in2S=abin. stainless steel
From To Ft. in. in.
From To Ft. in, in.
13. GRAVEL PACK:
Depth Size
FromSottom I11lqD 65r Ft. pea gravel
From To Ft.
14. REMARKS:
Material
RECEIVED
D1 OF Envmo"MEWAL MAf d�
-t eta 21 1986
MoltESVILLE
ItEGIONAL OfF0
I DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH 15 NCAC 2C, WELL CONSTRUCTION
STANDARDS, AND THAT A COPY OF THIS RECORD HAS BEEN TROVIDED
`TO THE WELL OWNER.
SIGNATURE OF CONTRACTOR OR AGENT DATE
GW-1 Revised 11/84 Submit original to Division of Environmental Management and copy to well owner.

NORTH CAROLINA DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY DEVELOPMENT IFOR OFFICE USE ONLY
DIVISION OF ENVIRONMENTAL MANAGEMENT - GROUNDWATER SECTION
-- _—
P.O. BOX 27e87 - RALEIGH,N.C. 27611. PHONE [phone]
Quad. No. __---__ __— Serial No.
Lat. —___ — Long. — Pc
Minor Basin
WELL CONSTRUCTION RECORD
Basin Code -__—___ _ _._-._. ._.-
-_— -- _
Header Ent.____— _ _ GW-1 Ent.
i
WELL #2
DRILLING CONTRACTOR - Lassiter Wei _C�ngan}t,__ Inc.
STATE WELL CONSTRUCTION
DRILLER REGISTRATION NUMBER 454 - - --- --
PERMIT NUMBER:
WELL 1­0(t t,TION (dhow �,1'.etch of the location below)
Nearrrst Town .----MOAYOQ.�--- -.-. _--
County• 1jninn -. - -----------..
_ Monroe. Sewage-..Tre,&-,men-t&ant--
Depth DRILI_11'.46 LOG
--nun,ty, or '. ,ndivistor and Lot No)
From TO FUrmetlOn Descriptin.
Ci., x of Monroe
Monroe,
0-20' ray clad and-grave.l _
_
Street or Route No.
North Carolina
20 to 50' yellow slate
----- - ------ - -
�;ity or town State zip Code
50' to 80' slate and_granite_ _ -
12-16-85 observation well 80' to 105' slate and granite
j DA `- ',i, : Li-D ____—__ _ USE OF WELL
-
4. TOTAL DEPTH -120t - _-- CUTTINGS COLLECTED [ Yes ❑ No
—..— - -
D:.h:S WELL. REPLACE EXISTING WELL? ❑ Yes No
— — - --
6. 5rATIC WATER LEVEL., 35 FT. p_above TOP OF CASING,
---- -- ---- - -
4 ['� below
TOP OF CASING IS FT. ABOVE LAND SURFACE.
—
LG iypmi 3I4__QP —METHOD OF TEST pumping
-- ------_---__
8. WATf R ZONES (depth) 65' to 105' minor infiltration
— ---- - ---- -
No specific zones
- - - ------ - -- -
9. CHLORINATION Type NTH Amount _
1o. CASING:
It additional space is needed use back of tr;rm
Wall Thickness
Depth Diameter or Weight/Ft. Material
-
LOCATION SKETCH
Grouted 2" casing from
From To -_ Ft.
(Show direction and distance from at least two State Roads,
40' to surface
or other map reference points)
From .— To --Ft--
From . _._— Tj Ft.
1. GROU I
Depth Material Method
t rOM -0-- -- To4g—Ft. - m n tr mp_,p pipQ
From To Ft
_ SCREEN
Depth Diameter Slot Size Material
i rUm �.$�- To lol -- Ft.1 200 in. 25 mtsh—Stainless steel
I. r jm — I o_.__ Ft. -- in. --- -- in —
From . __. ro___.— Ft..___ -__ in. in.
' 3 GRAVEL PACK
Depth Size Material
From BQttQM Tup tQ-401 pP-a--grave1 ------
From- -T°-
14. REMARKS _--------_-____-- — __--
I DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH 15 NCAC 2C, WELL CONSTRUCTION
STANDARDS, AND THAT A COPY Of THIS RECORD HAS BEEN PROVIDED, TO THE WELL OWNER. .
SIGNATURE OF CONTRACTOR OR AGENT -— DATE
LGAI-I Revised 11/94 Jut ,r ii on lin„ of F-ivircnrr rtai rVanagement jnd copy to well owner

M
NORTH CAROLINA DEPARTMENT OF NATURAL RESOURCES AND COMMUNITY DEVELOPMENT
DIVISION OF ENVIRONMENTAL MANAGEMENT - GROUNDWATER SECTION
P.O. BOX 27687 - RALEIGH,N.C. 27611, PHONE [phone]
WELL CONSTRUCTION RECORD
Well #3
DRILLING CONTRACTOR Lassiter Well Co. Inc.
FOR OFFICE USE ONLY
Quad. No. Serial No.
Lat. Long. Pc
Minor Basin
Basin Code
Header Ent. GW-1 Ent.
STATE WELL CONSTRUCTION
DRILLER REGISTRATION NUMBER A 54
PERMIT NUMBER:
1. WELL LOCATION: (Show sketch of the location below)
Nearest Town: Monroe
County: Union
Monroe Sewage Treatment Plant
Depth DRILLING LOG
(Road, Community, or Subdivision and Lot No.)
From To Formation Description
2. OWNER Civt of Monroe
ADDRESS Monroe
0 to 20' Red Clay and gravel
(Street or Route No.)
20' to 30' Yellow Clay and Gravel
N.C.
City or Town State Zip Code
30' to 60' Slate and Granite
3. DATE DRILLED 12-17-86 USE OF WELL observation
60, to RS Slate and Granite
4. TOTAL DEPTH 85 CUTTINGS COLLECTED © Yes ❑ No
5. DOES WELL REPLACE EXISTING WELL? ❑ Yes Q No
6. STATIC WATER LEVEL: 35 FT.
above TOP OF CASING,
��
elow
TOP OF CASING IS FT. ABOVE LAND SURFACE.
7. YIELD (gpm): 2 qts pm METHOD OF TEST dumping
8. WATER ZONES (depth)35I to AS' minor 'nfi 1 tration
No specific zones
9. CHLORINATION: Type HM Amount 50 ppm
10. CASING: Wall Thickness
If additional space is needed use back of form.
Depth Diameter or Weight/Ft. Material
LOCATION SKETCH
From To Ft. GDIIuted 2" CaSing from
(Show direction and distance from at least two State Roads,
35' to surface
From To Ft.
or other map reference points)
From To Ft.
11. GROUT:
Depth Material Method
From O— To 35 Ft. Cement tremlp i 1pe
From To Ft.
12. SCREEN:
Depth Diameter Slot Size Material
From 78 To-B-1— Ft. 2" in. 25meshl. Stainless steel
From To Ft. in. in.
From To Ft. in. in.
13. GRAVEL PACK:
Depth Size
FroBottom upro o 35'Ft pea gravel
From To Ft. ,
14. REMARKS:
Material
I DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH 15 NCAC 2C, WELL CONSTRUCTION
STANDARDS, AND THAT A COPY OF THIS RECORD HAS BEEN PROVIDED TO THE WELL OWNER.
GW-1 Revised 11/84
SIGNATURE OF CONTRACTOR OR AGENT DATE
Submit original to Division of Environmental Manacement and coov to well owner.

DIVISION OF
ENVIRONMENTAL
North Carolina Department of Natural MANAGEMENT
Resources &Community Development Robert F Helms
Director
James B. Hunt, Jr., Governor James A. Summers, Secretary Telephone [phone]
R, a April 9, 1984
RESOUL ',` D
COMMUNITY I_.. LOP�5L`:'
Mr. J . E. Hinkel ApR 111984
(-
City Manager
City of Monroe
P . 0. Box 69
Monroe, North Carolina 28110
SUBJECT: City of Monroe
Wastewater Treatment Plant
Equalization Basin
EPA Project No. C370564-01
Dear Mr. Hinkel:
This is in response to Mr. Wilson Crook's request during a phone con-
versation on March 28, 1984, concerning DEM groundwater requirements for the
subject equalization basin liner material and permeability and monitoring
wells.
As stated in our letter, December 16, 1983, groundwater monitoring wells
are required to be installed. The exact number and location must be approved
by the NCDEM Mooresville Regional Office. Also, a variance to the N. C. Well
Construction Standards must be obtained for monitor wells by written request
to the NCDEM Mooresville Regional Office since the well standards require
permanent observation wells to be constructed in accordance with requirements
for water supply wells.
Classifications and standards applicable to the underground waters of
North Carolina became effective December 30, 1983. (N.C. Administrative
Code Chapter 15, Subchapter 2L). These groundwater requirements do not
stipulate maximum or minimum liner permeability coefficients, nor is any
particular type of liner material identified or recommended. Therefore, we
cannot make recommendations on the liner design. _�lso, the liner thickness
of 12 inches and permeability of 10 ft./day (10 cm/sec) noted in our
December 16, 1983 letter is not a requirement since this letter is superseded
by the December 30, 1983 rule noted above.
We are in the process of evaluating the groundwater quality of an existing
lagoon system which was constructed with a twelve (12) inch thick natural clay
liner; and upon completion of this study, if you desire, we will advise of the
results. Please understand that State/EPA comments, review, and approval of
the lagoon/liner plans and specifications does not relieve the Grantee and
Engineer of the responsibility for the design and performance of the proposed-.
facilities.
P. O. Box 27687 Raleigh, N. C. 27611-7687
An Equal Opportunity Affirmative Action Employer

JPFMr. J. E. Hinkle
Page Two
�April 9, 1984
Previous lagoon designs which have been submitted to us have proposed
twelve-�12) inch thick natural clay liners to provide a permeability of
1 X 10 cm/sec. These liner designs have been approved by the State for
funding and construction; and therefore, would be approved for this project
if proposed.
In sunvary, it is the Grantee's responsibility to construct and operate
a facility in such a manner that the assigned groundwater standards will not
be contravened.
If there are questions, please call me or Larry Horton, the project
review engineer, at 919/733-6900.
Sincerely,
rr;
W. S. Hoffman, Supervisor
Engineering Management Unit
LH:tm
cc: Mr. Wilson Crook
Mr. Warren Henry
Mr. Walter Taft
Mr. Perry Nelson
Mr. Bobby Blowe
GPF

oNA0
0
Mayor
Fred C. Long
Council Members
James S. Barnett
P. E. Bazemore
;mas L. Gordon
Lynn A. Keziah
H. Duke Parker
I. B. Shive
(:ity Manager
J. E. Hinke!
December 22, 1983
mr. Warren Henry
inkbeiner, Pettis, & Strout, Ltd.
4405 Talmadge Road
Toledo, Ohio 43623
Re: Flow Equalization Basin
Project No. C370564-01
Dear ...arren:
inclosed is a cop} of letter received from 14. S. Hoffz-." :
concerning the above project. Please note requirements
1 thru 6, especially 5. We have submitted request for
NPDES revision required in number 6 to Mr. Robert Helms.
You should contact Mr. Dick Peace at the :iooresvillc-
Regional Office DEM and resolve the monitoring well
requirements as soon as possible. This item is extremely
critical to our schedule and budget.
Sincerely,
P. Wilson Crook
Director of Utilities
PWC/ j m
Enclosure
cc: J. E. Hinkel
Dick Peace s/.N'PDES revision request
'�fj -'� _ 4
P. O. Box 69 - 300 W. Crowell St. Monroe, N. C. 28110 704:'289-8557

Mayor
Fred C. Long
Cou icil Members
Jaynes S. Barnett
P. E. Bazemore
Thornas L. Gordon
Lynn A. Keziah
H. Duke Parker
I. B. Shive
City Manager
J. E. Hinkel
December 19, 1983
Mr. Robert F. Helms
N. C. Dept. of Natural Resources
and Community Development
Division of Environmental Management
P. 0. Box 27687
11"aleigh, N. C. 27611
Re: Flow Equalization Basin
Project No. C370564-01
Dear Mr. I-ieims:
In accorda-acu wiLii the authorization granted by Vr,
on May 17, 1983, we are now finalizing detailed pla:hs`<
for the above project. tle art.! also completing detaile,:
construction of certain additional modifications to ::e
water plant to improve treatment efficiency and reduce'
operating costs.
jr.
1az... . or
)reseat waste-
a�ect r1.:al
We therefore, request that the `'PDES Permit be amended to reflect the
improvements and modifications as set fortis in the following discussion.
The improvements to tihe existing wastewater plant, slave an average daily
treatment capacity of 7.0 '!,,D, including the following major components.
Flow Equalization Facilities
Equalization Basin
An earthen equalization basin havin,.;:I capacit 4. `li be const-
ructed adjacent to the existing screening; facilities ,,
_ tr.e plant to
receive and store wastewater diverted to Lnt basin for subsequent treat-
ment. There will be no byl-ass or overflow from the equalization basin
as the top of dike, elevation 519.00, is the same L-le,ton as the floor
Of the existing screening building. ius, when ti:� .:� �r level in the
basin reaches elevation 5-16.5, all flow pumped i..", L,1ant .,;ili flow
by gravity to the existing aeration basins for tr�.� :c_:t. To protect the
groundwater quality, the interior of the basin will be Lined with a mixtur
Of in situ soils and bentonite clay. The liner will be protected from
drying by a 6 inch layer of soil and an additional depth of stone placed
on the 3:1 sloped portion of basin interior exposed to water. The inside
dimensions of the equalization basin will be as follows:
Inside top - 202 ft. wide x 422 ft. long
Inside bottom - 136 ft. avg. width x 350 ft. long
Average working depth - 8.80 ft.
P. O. Box 69 - 300 W. Crowell St. Monroe, N. C. 28110 704, 289-8557

?: C 1: R
December 19, 1983
Page 2
Flow Diversion Chamber ,
A flow control weir chamber and control gate will be installed or, the
aeration tank influent piping downstream of the existing; static screening
facilities. The diversion chamber will automatically throttle flow to
aeration basins to a maximum of 10.4 MGD using a 33 inch x 43 inch motorized
slide gate and all excess flow will be diverted to the equalization basin
via a 24 inch influent pipe. The maximum flow to the treatment plant is
based on the maximum hydraulic capacity of the existing, tertiary filters
with three of the four filter cells available for service.
Return Pumping Station
A new pumping station will be ilistallod to return the stored volume of
wasta;oaLer from the equalization basin into the aeration basin influent
pipii,g for subsequent treatment. lile principal equip-ment will consist
of two 15 HP constant speed pumps, each having a capacity of 1,600 gpm,
and a 12 inch rate of flow controller installer; in either a submersible
or wet well -dry well type pumping station.
Instrumentation
The existing plant computer will be used to control the throttling gate in
the flow diversion chamber, monitor water level in the equalization basin
and to control the 12 inch throttling valve in the return pumping station.
Treatment Plant Improvements
Additional Screening Facilities
Two new screens, a 12 foot by 32 Ioot building addition, related structural
work, p i p ino and conveyor mod if icat ioas will be constructed to utilize t;ie
:ull -pumping capacity of the influent pumping station anc reduce the potential
for Jypasslllg raw sewage :When flows from the C-Liy e:':�t'%:�1 li :'iGD. :�ltiiough,
the existing plant influent pumping station has a T�i::1.IilI;:l pumping capacity of
13.0 `':GD, only three pumps can be operated together to avoid hydraulic over-
loading of the existing, static reens. The new statictscreens will each add
1.17 %,,GD of hydraulic capacity the existing; screening facilities.
mixing and Flow Splitter Box
A new'23 foot by 19 foot mixing and splitter box wrill be constructed at the
front of the aeration basins to provide uniform mi::ing and loadings to existing
aeration basins it through 0'3. As raw sewage flows to the plant vary, balancing
of the plant influent and recirculated sludge ::low into the aeration basins is
not possible with the present aeration basin influent piping arrangement. There-
fore, a mixing and splitter box will be installed where plant influent, equaliz-
ation basin return flow and recirculated sludge from the intermediate clarifiers
will be mixed by baffles. A balanced flow to each aeration basin will then be
achieved using weirs in a splitter box. 14ew 24 inch piping from the mixing and
splitter box to each aeration basin will also he installed as the existing 18
inch piping is undersized to convey the combined plant influent, recirculated
sludge and equalized return flow.

N CDN R
December 19, 1983
Page 3
Waste Backwash Water Piping
Waste backwash water from the tertiary filters will be rerouted into tho
equalization basin by extension of existing 24 inch piping approximately
200 feet. This will eliminate the use of the existing plant influent pur.:lhs
to lift waste washwater a total of 88 feet using 100 tip variable speed drives:
rather, the equalization basin effluent pui;hpint; station, using pulaps Having
15 hp constant speed drives will be used for recy clinb waste washwater floe:.
At present, waste was;.•::ater is pumped to a holding tank, drained back to the
plant influent pumpii. station and repu;i;ped to the static screens. The p_aser.t
method of recvcling waste backwash crater causes shock hydraulic loads to the
secondary process of the plant, results in potential bypassing of raw sewage
when flows reach 11 to 12 INGD, and wa:.tcs approximately $4,300 per yo.ar of
electrical energy.
Conversion of Existing Waste Washwater holding Tank
As waste washwater will be recycled thro
holding tank will be available for use a
was originally constructed as an aerobic
piping to and from the holding tank will
to the existing tank will be required.
the equalization basin, the existing
additional digester. As this structure
digester, modification of the existing
be minor. No structural modifications
If you should have any questions in regard to the above inior.mation, please feel
free to call.
Sincerely,
`City ?tanager
nclosures:
cc: Walter Taft, Jr.
Finkbeiner, Pettis & Strout, Lt-c'.
Wilson Crook

I
0
DIVISION OF ENVIRONMENTAL MANAGEMENT
M E M O R A N D U M
TO: Dale Crisp
THRU: Arthur Mouberry
FROM: Bob Cheek fa C
GROUNDWATER SECTION
November.7, 1983
N C. DEPT. Or 1'ATURAL
RESOURCES AND
COMMUNITY DR HLOPMENT
NOV 9_ RECD
DIVISION OF ENVIRO1VLRTRL ;I IL{,-LN
MOORESVILLE RELUJA UME
RE: Groundwater Evaluation of Town of Monroe Wastewater Treatment
Facilities
The Central Office Groundwater Staff is in agreement with the pro-
ject proposal and Regional Office evaluation with but two points regard-
ing construction of the basin liner, as follows:
1. that the soil-bentonite mixture should have a minimum thickness
of 12 inches, and
2. that the mixture be compacted to achieve a permeability of 10-4
ft/day.
Both requirements relate to the type and size of on -site material to
be mixed with the bentonite and the presence of vertical fracture sets
which are invariably associated with this rock type.
Additionally, we concur with the number, placement (site plan map)
and construction (see fig. in information packet) of monitor well sug-
gested by Dick Peace.
BC/gm
cc: Dick Peace
Groundwater Files

4L
G
DIVISION OF ENVIRONMENTAL MANAGEMENT
October 28, 1983
MEMORANDUM TO: Bob Cheek
FROM: Dick Peace
SUBJECT: Monitoring Wells
Town of Monroe
Wastewater Treatment Plant
Enclosed are drawings and specs for the flow equalization basin and the
sludge storage (spoils area) lagoon from Monroe Wastewater Treatment Plant.
Hamilton told me that the liner would be to a permeability of 10-7 cm/sec.
Since this treatment works is located on a slope that lies entirely adjacent
to Richardson Creek, I do not think that there is much danger of ground
water pollution, if any, for a very long distance. May pollute the creek though!
The underlying geology is bedded argillite that has a very thin soil
coverage. The wells will have to be drilled since they will be almost totally
in weathered rock.
Suggest to review the maps, you place the two on a light table and match
up my "match points". Much of the area in which they are constructing has
either been, is, or plans to be, used for basins, lagoons, ponds or drying
beds.
If you have questions, call me. I lost a week's time in doing my part
so I'm sure the engineer firm, Bill Hoffman (Grants Section - 733-6900) and
Monroe will appreciate you making up the time!
Enclosure
RRP:se
GjC : N uu, �) . 77,Wu ©•r .�or� eoE ,�i2a � �

AiLlft
North Carolina Department of Natural
Resources &Community Development
James B. Hunt, Jr., Governor Joseph W. Grimsley, Secretary
DIVISION OF ENVIRONMENTAL MANAGEMENT
October 28, 1983
Mr. Raymond D. Hamilton, P.E.
Director of Engineering
Finkbeiner, Pettis & Stout, Limited
2301 West Meadowview Road
Greensboro, North Carolina 27467
Dear Mr. Hamilton:
I have finished my field work and sent my recommendations to the Raleigh
Central Groundwater Section for their review.
Sorry, I took an extra week on this work but in my Groundwater Section,
I have one of the two employees out on sick leave.
Sincerely,
Ric and R. Peace, Jr.
Regional Supervisor
cc: Bob Cheek - Groundwater Section, Raleigh
,oresville Regional Office P. O. Box 950, 919 North Main Street, Mooresville, N. C. 28115 0950 Telephone [phone]

Finkbeiner, Pettis & Strout, Limited
Consulting Engineers
2301 W. Meadowview Road
Greensboro, North Carolina 27407
919-292-2271
October 14, 1983
Mr. Richard Peace, Regional Supervisor
Division of Environmental Management
P.O. Box 950
Mooresville, NC 28115
RE: Equalization Basin
Monroe, North Carolina
Dear Mr. Peace:
Enclosed is a set of drawings and the proposed liner specification
for the subject project as we discussed last Wednesday.
Larry Whorton, of the State Construction Grants program, has asked
me to contact you with regards to what, if any, groundwater monitoring
must be done in conjuction with operation of the proposed facility. As
I understand it, the Raleigh office will not begin review of our design
documents until they have received a letter from your office with your
recommendations.
We would appreciate your comments as soon as possible. Please give
me a call if you have any questions.
Sincerely,
C.
Raymond D. Hamilton, P.E.
Director of Engineering, Greensboro
RDH/plb
Enclosures
cc: Wilson Crook
FP&S-file
+iH Tnlorin nit4 Nr