NCG510335_Regional Office Historical File Pre 2018 (3)

ATTA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Michael F. Easley, Governor William G. Ross, Jr., Secretary
Alan W. Klimek, P.E., Director
ANT-
June 5, 2006 MOOi�E . - ..;.i.`kit
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
JUN 1 9 2006
Pete Overton
Pacemaker Leasing
543 Cox Road, Suite C
Gastonia,NC 28054 WATER QUALITY SECTION
Subject: Notice of Violation
Failure to Submit Permit Renewal Application
Certificate of Coverage NCG510335
Gilliland's site
Gaston County
Dear Permittee:
NPDES General Permit NCG510000, under which the subject facility is covered, expires on
September 30, 2006. North Carolina Administrative Code (15A NCAC 2H.0105(e))requires that an
application for permit renewal be filed at least 180 days prior to expiration of the current permit. To satisfy
this requirement, your renewal package should have been sent to the Division postmarked no later than
April 3, 2006.
The Division has not received a renewal request for the subject CoC. This is a violation of your
permit at Part II. B. 10, which states"Any permittee that has not requested renewal at least 180 days prior
to expiration...will subject the permittee to enforcement procedures as provided in NCGS 143-215.6 and 33
USC 1251 et. seq.".
To prevent an assessment of civil penalties you must submit a completed permit application(see
enclosed forms) no later than June 19, 2006. If the system is inactive due to lack of trust fund payments,
but the remediation equipment is still on site, the CoC should be renewed.
If all remediation discharge from this facility has ceased and you wish to rescind this CoC [or if you
have any other questions], contact Charles Weaver of my staff. Mr. Weaver's telephone number, fax number
and e-mail address are listed at the bottom of this page.
5 +L SIGNED
=eJSAN A, \N1LS(?t
Alan W. Klimek, P.E.
cc: Central Files
NPDES File
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 919 733-5083,extension 511 (fax)919 733-0719
VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES e-mail:[e-mail]

PIN viKuNr% gNT, HEALTH,
NATURAL RESOUPcy's
State of North Carolina FP 30 1996
Department of Environment, h hCI I Yr E��E Hr"R
11Yr
', I. C,, ,,,i ER S 'EMTAL MANAGEMENT
Health and Natural Resources 1, / • uNAt OFFICE
Division of Water Quality c SEP _7 P„ i9_ 59 , ..
i r
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary12) 'N A. Preston Howard, Jr., P.E., Director C IVED
August 19, 1996 SEP 4 t?o a
Mr. Pete Overton FACILITIES ASSESSMENT UNIT
Pacemaker Leasing Co.
P.O. Box 2359
Gastonia, North Carolina 28053-2359
Sucject: NPDES Permit NCG510000
Cert. of Coverage No. NCG510335
Springwood Site
Gaston County
Dear Mr. Overton:
In accordance with your application for an NPDES discharge permit received February 21, 1996
by the Division, we are herewith forwarding the subject Certificate of Coverage under the state-NPDES
general permit for the Springwood Facility and one set of final approved plans and specifications.
Authorization is hereby granted for the construction and operation of a 100 GPM groundwater recovery
and treatment system consisting of an oil/water separator, free product storage tank, tray-type air stripper,
particulate filter and granular activated carbon units with final discharge of treated groundwater to an
unnamed tributary of the South Fork Catawba River. This Certificate of Coverage is issued pursuant to
the requirements of North Carolina and the US Environmental Protection Agency Memorandum of
Agreement dated December 6, 1983 and as subsequently amended.
Please not:that this Certificate of Coverage requires that all three major treatment components (the
oil/water separator, the air stripper and the carbon units) remain in operation throughout the life of this
facility.
If any parts, measurement frequencies or sampling requirements contained in this general permit
are unacceptable to you, you have the right to submit an individual permit application and letter requesting
co-ycragy cndc_ ar in i•'iaua ,.ennit. unit-Fs s'irl, demand is made, this decision shall be final and
binding. Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be
followed in case of change of ownership or control of this discharge. .
The Authorization t-) Construct is issued in accordance with Part III, Paragraph 2 of NPDES
Permit No. NCG510000, an-1 shall be subject to revocation unless the wastewater treatment facilities are .
constructed in accordance with the conditions and limitations specified in Permit No. NCG510000.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as 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(704) 663-1699 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.
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

•
Permit No. NCG510000
Certificate of Coverage NCG510335
Pacemaker Leasing Co.
August 19, 1996
Page 2
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, the Certificate of Coverage, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
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 143-215.6A to 143-215.6C.
The issuance of this permit does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances 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 Federal or
Local other governmental permit that may be required.
If you have any questions or need additional information, please contact Mark McIntire at
telephone number(919) 733-5083, extension 553.
Sincerely,
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Mooresville Regional Office,Water Quality
Permits and Engineering Unit
Training and Certification Unit
Facility Assessment Unit

{
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QULATTY
GENERAL PERMIT NO. NCG510000
CERTIFICATE OF COVERAGE NO. NCG510335
TO DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SIMILAR WASTEWATERS
UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
n General Statute 1 A 214 r.lawful
�__ds
In compliance with the vrovision of North Carolina _ n�ral .3-�..,.:, � :e. ..,,,fu1 s.an,..a..��
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act,as amended,
Pacemaker Leasing Company
is hereby authorized to construct and operate a groundwater treatment system consisting of an oil/water separator,an
air stripping system and carbon filtration for petroleum contaminated groundwater or similar waste streams with the
discharge of treated wastewater from a facility located at
Pacemaker Leasing Company
1020 Hickory Grove
•
Springwood
Gaston County
to receiving waters designated as a an unnamed tributary of South Fork Catawba River.
in accordance with the effluent limitations,monitoring requirements,and other conditions set forth in Parts I,II,III
and IV of General Permit No.NCG510000 as attached.
This certificate of coverage shall become effective August 19, 1996
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day August 19, 1996
Original Signed By
David A. Goodrich
A. Preston Howard,Jr.,P.E.,Director
Division of Water Quality
By Authority of the Environmental Management Commission

•
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ROAD CLASSIFICATION SCALE 1 :24 000 .
PRIMARY HIGHWAY LIGHT-DUTY ROAD,HARD OR 0 1 MILE
HARD SURFACE IIMUIRIISIM IMPROVED SURFACE xea: y s s 3
. n. -.craxre +�•:;m— ves.e s—•=:.z..4,-,4,x¢ •
SECONDARY HIGHWAY 0 7000 FEET
HARD SURFACE — UNIMPROVED ROAD = — = 747., .-m w — aum>.vcasr:.•r-as; zzx�:,
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1 0 1 KILOMETER
Latitude 35°16'20" Longitude 81°03'41" =iiiiim
Map # F14SE Sub-basin 03-08-34 CONTOUR INTERVAL 10 FEET
Stream Class WS-IV
QUAD LOCATION Pacemaker Leasing Co.
Discharge Class 100% Industrial NCG510335
Receiving Stream UT South Fork Catawba Gaston County
Design Q 100 GRv1 Permit expires 7/31/97 Groundwater Remediation

Groundwater Management Associates, Inc.
101-E Woodwinds Industrial Court
Cary, North Carolina 27511
(919) 481- 2631 Facsimile 481-3219
N.C. DEPT. OF
April 26, 1996 ENVIRONMENT, HEALTH,
&NATURAL RESOURCES
Mr. Mark D. McIntire, E.I.T. APR 3 01996
Environmental Engineer
NCDEHNR/DEM/NPDES Group DIVISION OF ENV!RGidis io�i+L MANAGEMENT
Post Office Box 29535 MOORESVILLE REGIONAL OFFICE
Raleigh, North Carolina 27626-0535
Re: Request for Additional Information
Permit No. NCG510335
Springwood Site
Gaston County
Dear Mr. McIntire:
Specifications for the above-referenced groundwater treatment facility were
submitted to your office as part of an application for a general NPDES permit on
February 13, 1996. Enclosed is an addendum containing information regarding a tray
aeration system which has been selected in lieu of a packed tower air stripping system.
The information provided in the addendum is based on one manufacturer; however,
equivalent models from other manufacturers will be considered acceptable.
Please call if you require additional information.
Sincerely,
Groundwater Management Associates, Inc.
Mary T. Facciolo, E.I.T.
Environmental Engineer
Enclosure
cc: Pete Overton, Pacemaker
E:\16205\mm960426.doc

ADDENDUM 1
SPECIFICATIONS FOR GROUNDWATER TREATMENT FACILITY
General NPDES Permit Application for
Pacemaker Leasing Company/Gilliland's Place
Springwood,North Carolina, Gaston County
Groundwater Incident#10040
• kor4,•• 1%,
• ;• . .
505L' I 1:4
• •..1q'C/NEV
�• yri j. ' 1%%%%%
Design Criteria %%%%ton%%%%% %%%%�
A. Wastewater Origin
1. Source: Groundwater contaminated
with petroleum products
2. Overall design flow: 100 gpm
3. Operating range: Phase I 30 to 50 gpm
Phase II 50 to 100 gpm
4. Normal expected initial operation: 30 gpm
B. Proposed Method of Treatment
1. Recovery Well System
2. Oil/water Separator
3. Air Stripping of Volatile Chemicals from Water
4. Particulate Filter
5. Carbon Adsorption Effluent Polishing

C. Recovery Well System
1. Pumping rates
Maximum Projected Projected
Pumping Rate Pumping Rate Pumping Rate
Well (gpm) Phase I (gpm) Phase II (gpm)
MW16 (existing) 4 2 1 - 4
MW19R 14 5 - 10 5 - 14
(proposed)
MW20 (existing) 1 1 1
MW21R 50 15 - 20 15 - 50
(proposed)
MW22R 20 6 - 12 6 - 20
(proposed)
OWl (existing) 10 1 - 5 1 - 10
Total 100 30 - 50 30 - 100
2. Note: pumping rates to be optimized after start-up of Phase I.
3. Recovery well construction details
Well Casing Size Screen Interval
MW16 (existing) Sch. 40 PVC 6" 20-56' open hole
MW19R(proposed) Sch. 40 PVC 6" 24-50' screen
MW20 (existing) Sch. 40 PVC 2" 30-50' open hole
MW21R(proposed) Sch. 40 PVC 6" 25-60' open hole
MW22R(proposed) Sch. 40 PVC 6" 30-60' open hole
OWl (existing) Steel 3" 21-78' open hole
4. Well equipment
a. Water recovery: Grundfos Redi-Flo2 (or
equivalent) model MP 1,
200Hz(1 gpm @ 65') at
MW20, model MP1,
400Hz(5 gpm @ 185') at
OW1 Grundfos Redi-Flo4
(or equivalent) model 5E5

(5 gpm @ 130'), at
MW16, model 16E7 (5
gpm @ 145') at MW19R
and MW22R, model 25E6
(20 gpm @ 130') at
MW21R
b. Controls: water level sensors in
each well
5. Recovery lines
a. Conduit-underground: Sch. 40 PVC
b. water lines: flexible hose
6. Safety: System high level
switches will shut off
groundwater pumps if
overflow is imminent.
7. Product/water separator: 50 gpm coalescing type
with skimmer that drains to
a product storage tank.
Unit shall be constructed
of fiberglass and plastic
parts. An additional unit
may be required in Phase
II.
8. Product storage tank: 55 gallon drum equipped
with system high level
switches to shut off
groundwater pumps if
overflow is imminent.
D. Air Stripping System (Phase I only)
1. Design water flow: 30 - 50 gpm
2. Design air flow: 1800 cfm •
3. Air/water ratio: 260:1 -450:1

4. Method: Low-profile tray-aeration system
(such as ShallowTray Model 31221)
5. Removal efficiency based on 1/2 of average concentrations of
samples from existing wells MW16,MW19-MW22, and OW1:
Influent @ 30 gpm Effluent @ 50 gpm Effluent
Chemical conc (ppb) %Removed conc (ppb) %Removed conc (ppb)
benzene 1126 99.99 <1.0 99.99 <1.0
toluene 2715 99.99 <1.0 99.98 1.0
ethyl benzene 303 99.99 <1.0 99.99 <1.0
xylenes 2261 99.99 <1.0 99.99 1.0
MTBE 149.4 98.77 2.0 95.89 7.0
naphthalene 6.4 98.82 <1.0 95.46 1.0
EDB 1.3 98.15 <1.0 96.09 <1.0
DCA 2.3 99.95 <1.0 99.66 <1.0
10. Air blower: Explosion-proof
11. Safety: Blower failure shut-off
switch. System
overflow safety is the
batch tank high-high
level shut off
12. Batch tank:
a. Pump off-low water level: 4" from bottom
b. Pump on-high water level: 6" from top
c. High-high level shut-off: 2" from top
d. Iron sequestrant feed pump Milton Roy chemical
metering pump model
LE-151 S (or
equivalent).
Sequestrant shall be
Jaeger JP7 (or
equivalent).
13. Pump: March magnetic drive
(or equiv.), seal-less,
explosion proof motor,
Kynar/Viton internals;

TE-7.5K-MD 50 gpm @
70' w.c.
14. Phase II equipment Duplicate items 1 - 11
and 13.
E. Carbon Adsorption Effluent Polishing(Phase I only)
1. Design flow: 25 gpm through each
canister at a pressure
drop of 0.7 feet
2. Maximum operating conditions:
a. Pressure: 50 psi max recommended
operating pressure
b. Maximum influent concentration
(BTEX plus MTBE): 11 ppb
3. Effluent concentrations: Set by permit
(benzene 71.4 ppb,
toluene 11 ppb)
4. Batch tank 280 gallons
a. Pump off-low water level: 4" from bottom
b. Pump on-high water level: 6" from top
c. High-high level shut-off: 2" from top
5. Controls integrated with air stripper
6. NPDES discharge (Phase I):
a. Maximum Flow: 50 gpm
b. Liquid detention time: 25 minutes
c. Number of canisters: Two Carbtrol HP-1000
adsorbers or equivalent
(@ 1000 lbs of carbon
each)placed in parallel
d. Pump: March magnetic drive
(or equiv.), seal-less,
explosion proof motor,
Kynar/Viton internals;
TE-8K-MD 50 gpm @
83' w.c.

e. Particulate filter Five Strainrite model OF
1-180 pressure vessels or
equivalent(2" connection,
28" basket, 150 psi 200
gpm max)placed in
parallel with filter sock
Strainrite SP100PL3OS or
equivalent(4 ft2 surface
area, polypropylene, 100
micron).
7. Phase II equipment: Duplicate items 1 - 3,
5, and 6 or replace
item 6 (carbon canister)
with a larger model
(Carbtrol HP-1700)
F. General System Requirements
1. Flow monitoring: Flow meter, 2" Sensus
SR water meter or
equivalent; 0.5 psi
pressure loss @ 30 gpm,
1.5 psi pressure loss @ 50
gpm and 5 psi pressure
loss @ 100 gpm
2. Safety: A fire extinguisher will
be mounted near the
treatment system

•
Sha11owTrav
low profile air strippers
System Performance Estimate
Client and Proposal Information: Model Chosen: 31200
Pacemaker-Gilliland's Place Water Flow Rate: 30.0 pm/
Air Flow Rate: 1800 cfm
Water Temp: 55.0 F
Air Temp: 55.0 F
t / A/W Ratio: 448.8
Safety Factor: None
Untreated Model 31211 Model 31221 Model 31231
Contaminant Influent Effluent Effluent Effluent
Effluent Target Water Water Water
Air(lbs/hr) Air(lbs/hr) Air(lbs/hr)
removal % removal % removal
Benzene 1126 ppb 5 ppb <1 ppb <1 ppb
-- 0.016822 0.016897 0.016897
99.5660% 99.9981% 100.0000%
Toluene 2715 ppb 16 ppb <1 ppb <1 ppb
-- 0.040503 0.04074-2 0.040743
99.4277% 99.9967% 100.0000%
Ethyl Benzene 303 ppb 2 ppb <1 ppb <1 ppb
-- 0.004517 0.004547 0.004547
99.6558% 99.9988% 100.0000%
o-Xylene 2261 ppb 10 ppb <1 ppb <1 ppb
-- 0.033780 0.033929 0.033930
99.5951% 99.9984% 100.0000%
MTBE 149 ppb 17 ppb 2 ppb <1 ppb
-- 0.001987 0.002212 0.002239
88.9206% 98.7725% 99.8640%
Naphthalene 6 ppb 1 ppb <1 ppb <1 ppb
-- 0.000081 0.000095 0.000096
89.1254% 98.8174% 99.8714%
Ethylene Dibromide 1 ppb <1 ppb <1 ppb <1 ppb
-- 0.000017 0.000019 0.000019
86.4052% 98.1518% 99.7487%
1,2-Dichloroethane 2 ppb <1 ppb <1 ppb <1 ppb
This report has been generated by Shallow . soft e & 0.2:Thi •fill::.° designed to assist a skilled operator
•in predicting the performance of a ShallowT •.i II tr
ing sys . " east Env . -'.I'Products, Inc. is not responsible
for incidental or consequential damages resulting from the improper operation of either the software or the air stripping equipment.
Report generated:4/27/1996
Copyright 1995 North East Environmental Products, Inc. * 17 Technology Drive, West Lebanon, NH 03784
Voice: 603-298-7061 FAX: [phone] *All Rights Reserved.

Sha11owTrav
low profile air strippers
System Performance Estimate
Client and Proposal Information: Thkdol Chosen: 31200 /
Pacemaker- Gilliland's Place Water Flow Rate: 50.0 gpm
Air Flow Rate: 1800 cfm
Water Temp: 55.0 F
Air Temp: 55.0 F
NW Ratio: 269.3
/ Safety Factor: None
Untreated Model 31211 Model 31221 Model 31231
Contaminant Influent Effluent Effluent Effluent
Effluent Target Water Water Water
Air(lbs/hr) Air(lbs/hr) Air(lbs/hr)
% removal % removal % removal
Benzene 1126 ppb 13 ppb <1 ppb <1 ppb
-- 0.027837 0.028159 0.028162
98.8483% 99.9867% 99.9998%
Toluene 2715 ppb 40 ppb 1 ppb <1 ppb
-- 0.066904 0.067880 0.067905
98.5547% 99.9791% 99.9997%
Ethyl Benzene 303 ppb 3 ppb <1 ppb <1 ppb
-- 0.007503 0.007578 0.007578
99.0479% 99.9909% 99.9999%
o-Xylene 2261 ppb 25 ppb 1 ppb <1 ppb
-- 0.055925 0.056525 0.056550
98.9119% 99.9882% 99.9999%
MTBE 149 ppb 31 ppb 7 ppb 2 ppb
-- 0.002961 0.003562 0.003687
79.7357% 95.8936% 99.1679%
Naphthalene 6 ppb 2 ppb 1 ppb <1 ppb
-- 0.000110 0.000135 0.000159
78.7042% 95.4649% 99.0342%
Ethylene Dibromide 1 ppb 1 ppb <1 ppb <1 ppb
-- 0.000008 0.000031 0.000032
80.2173% 96.0865% 99.2258%
1,2-Dichloroethane 2 ppb <1 ppb <1 ppb <1 ppb
This report has been generated by Shallow■ . t r softwa 0 .Thiii�•VIM designed to assist a skilled operator
in predicting the performance of a ShallowT��" i Oing-sys .2'ast EnvF�•� I roducts, Inc. is not responsible
for incidental or consequential damages resulting from the improper operation of either the software or the air stripping equipment.
Report generated:4/27/1996
Copyright 1995 North East Environmental Products, Inc. * 17 Technology Drive, West Lebanon, NH 03784
Voice: 603-298-7061 FAX: [phone] *All Rights Reserved.

3120
0 Series
I
4 Model Pictured: 31221
I,_ - i Options chosen for system pictured:
C 'NEMA 4 control panel with alarm
r . interlocks,motor starter,relays,
i• 100 db alarm horn
Main disconnect switch
` < Low air pressure alarm switch
I ( - kit • . 'High water level alarm switch
s
, ' + ti Water pressure gauges
t _ 2iLine sampling ports
•zr...�
4ti-
• +4
.. '1
'fir;.". "'ti.Q''i`':. , <'V
-• /--.
•
tza,, i. 7e 4
0
ic�E 31241:tonfiguration*
e e • • •
1 1
8 8 e e
1 I ECONTROL PANEL
I / 1 PRESSURE GE la
• • •I 02 m.
0. 0� tf a `swcw PREswRE • •
airI .
•
ie e i ---e-
55 in
�G�ER
o�l9'G 43i.
EU .RGEP MP A i_L 0
--d%1 PlAil Ibi 0
a.-.�c wif? r-..a.. --.3R,,Anve.,
J C L ® SEAM 7in.
15(Bn 1 RO in 1
t
FRONT VIEW RIGHT SIDE VIEW
*Use these drawings as a guideline only.Systems are built to your project's specifications.

The graphs represent approximate Percent Removal vs. Flow Rate
removal efficiencies at 50°F.Use the
ShallowTray®ModelerTM software to j ICE
I calculate expected performance.
99.9- I -{, _______
•
Benzene
99.6- : i
♦
99.3- ♦
flow # min. approx. 99 ♦♦
Models rate trays width length height cfm lbs. ♦'•, MTBE
♦
31211 6-270gpm 1 5'10" 12'6" 6'0" 1800 2565
93-
\31221 6-270gpm 2 5'10" 12'6" 7'0" 1800 2910 90
31231 6-270gpm 3 5'10" 12'6" 8'0" 1800 3255
Four Trays I I
31241 6-270gpm 4 5'10" 12'6" 9'0" 1800 3600 0
TCE
___
99.6- •♦ -`\ '
•
♦ \\
99.3- '♦
Benzene
99 ♦•
•
96-. I '♦
MTBE
93-
60-
-sha
SIia,11ow'1'ka,v 30-
Three Trays
►.__ °
low profile air strippers 100- _-! _ TCE_ 99.9-
99.6- \
O
99.3- \ 1 \\
`` Benzene II
IIY 99 1\-
31200 AERATION TRAY �•♦
96- • . --
40 WATER INLET C
CHAMBER w♦ 93- ♦
u MTBE
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SdState of Nortthof Carolina
nm
Departmenent, �tiq
Health and Natural Resources C1V 4 71Fict,
s Fa
Division of Environmental Management
James B. Hunt, Jr., Governor AMMiNiMms
Jonathan B. Howes, Secretary H ri
A. Preston Howard, Jr., P.E., Director
ENVIRC:'. .,,,
March 5, 1996 & NATL..RA_ 11S
Mr. Pete Overton hop 0 1996
Pacemaker Leasing Co.
P.O. Box 2359 DIVISION OF ENVIROlII�ERTAI ra;ANAGEMEIIT
Gastonia, North Carolina 28053-2359
IADORESVILLE RE&iORAL DACE
Subject: Receipt of NPDES Permit Application
Permit No. NCG510335
Springwood Site
Gaston County
Dear Mr. Overton:
The Division acknowledges receipt of your NPDES permit application for coverage under general
permit number 510000 and a$550 check (#70522) received February 21, 1996.
After a preliminary review of the proposed treatment system, several questions have surfaced. Our
primary concern is the ability of the system to meet effluent limits set forth in the general permit. The
general permit for groundwater remediation systems has an effluent limit for toluene of 11 141. Evidence
that this limit will be met must be provided before a Certificate of Coverage can be issued for this facility.
Furthermore, the general permit will expire July 31, 1997. When the permit is renewed it will
include provisions for discharges into water supply waters. The permit limits for these discharges will
likely be much more stringent than for the current general permit. This fact should be considered in
designing the said treatment system.
Final plans sealed by a North Carolina professional engineer must be submitted to the Division
before an Authorization to Construct can be issued for this facility. A decision must be made on the proper
type of air stripping to be used. Once this decision is made, plans specifying this decision must be
submitted to the Division.
I am, by copy of this letter, requesting that the Mooresville Regional Office Supervisor prepare a
staff report and recommendations regarding this discharge. This application has been assigned to me for
review. If you have any questions regarding this application, I can be contacted at [phone],
extension 553.
Sinc re ,
Mark D. McIntire, E.I. .
Environmental Engineer
NPDES Group
cc:
Permits &Engineering Unit/Mar cIntire
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]/FAX [phone]
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