NC0083658_Permit Issuance_19960920

State of North C :rOl r:&
Department of Envi onment.
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Raymond Myers
AAF/McQuay. Inc.
P. 0. Box 2510
Staunton. Virginia 24401-1420
Dear Mr. Myers:
Qt
®FEE1 t1 Vi—Z
September 20, 1996
Subject: Issuance of NPDES Permit NCO083658
AAF/McQuay. Inc.
Former Heatcraft Facility
New Hanover County
In accordance with your application dated December 19, 1995. the Division is forwarding
the subject State-NPDES 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 Aget:cy dated December 6, 1953.
In a letter dated December 18, 1995. Ms. Jean Decker and Mr. Clancy O'Dowd requested
two (2) modifications to the existing permit. The first request was for an additional discharge
point, because another groundwater remediation system was being planned for the future. The
Division has agreed to include a second set of limits at the specified flow rate of 0.36 MGD.
However, please be aware that an Authorization to Construct permit must be obtained before
construction on the second system is allowed.
The second request was to reduce the chronic toxicity testing to semi-annually or
annually. The North Carolina Administrative Code 15A: 2B.0508 requires this test to be quarterly
for this type of discharge. In addition, the toxicity testing shall coincide with the chemical testing,
which is performed on a quarterly basis.
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, Post Office Drawer 27447, Raleigh, North Carolina 27611-
7447. Unless such demand is made, this decision shall be final and binding.
Please take notice that this permit is not transferable. Part II, E.4. addresses the
requirements to be followed in case of change in ownership or control of this discharge.
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

This permit. does not ofI't't't the legal requirement 1.0 Obtain Other permits which may be
required by the Division of Envirorlirental Management or permits required by the Division ofland Resources, Coastal Area iiManagement Act or any other Federal or Local governmental
permit that may be required. 11' VOLI have any questions concerning this permit, please contact
Susan Ronson at telephone ilurnber q 19/733-5083, ext. 551.
Sin •erely.
41k Preston Howa .� Jr.. P.E.
cc: Central Files U
Mr. Roosevelt Childress, EPA
Wifirnington Regional Office. Water Quality Section
Facility Assessment Unit
Permits and Engineering Unit

1' ernm No. NCO083658
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, 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,
AAF / McQuay, Inc.
is hereby authorized to discharge wastewater from a facility located at
the Manufacturing Facility
602 Sunnyvale Drive
Wilmington
New Hanover County
to receiving waters designated as an unnamed tributary to Barnards Creek in the Cape Fear 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 November 1, 1996.
This permit and authorization to discharge shall expire at midnight on June 30, 2001.
Signed this day September 20, 1996.
. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0083658
SUPPLEMENT TU PERMIT COVER SHEET
AAF/McQuay, Inc.
is he►-ebv authorized to:
1. Continue to operate a 0.288 MGD groundwater reme:diation system consisting of air stripper
units operating in series, two carbon filters, flow meter, automatic controls, telemetry
system, and outfall line (001) located at the manufacturing facility, 602 Sunnyvale Drive,
Wilmington, New Hanover County (See Part III of this Permit), and
2. After- receiving an Authorization to Const4ruct from the Division of Water Quality, construct
and operate another 0.36 MGD groundwater remediation system and outfall line (002), and
3. Discharge from said treatment works at the locations specified on the attached map into
an unnamed tributary to Barnards Creek which are classified Class C-Swamp waters in
the Cape Fear River Basin.

5
01
K.
t ,.-Dischar e Point
A It
Proposed
Discharge Point 002
RAOIOO
M To we
FLAT`'I S D «'
yLIGHT
LIGHT I 1
�\ LIGHT
7,0j
t N
ROAD CLASSIFICATION
PRIMARY AY LIGHT-D_ SCALE 1:24 000
HARD SURFACE IMPROV DE SURFACE 0 1 MILE
SHARD ECONDARY
DRFACE HIGHWAY O 7000 FEET
UNIMPROVED ROAD = _ -
1 0 1 KILOMETER
Latitude a4__ _1n,Longitude 77056' 05"
Map # K27NW Sub -basin 03-06-17 CONTOUR INTERVAL 5 FEET
Stream Class C-Sw
Discharge Class Industrial -GW Remed. QUAD LOCATION AAF/McQuay, Inc.
Receiving Stream UT to Barnards Creek NCO083658
Z:� 0 New Hanover County
Design Q _Permit expires 6/30/01 GW Remed.-Solvents

A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NC008 365S
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge fro►n
outfall(s) serial number 001. Such discharges shall be limited and monitored by the pern-iittee as specified below:
Effluent Characteristics
Flow
Trichlorethene
EPA Method 624
EPA Method 625
Chronic Toxicity`
TSS
1,1 Dichloroethene
* Sample locations: E - Effluent
Discharge Limitations
M
it rin Requirements
Measurement
�m_plg_
*Samog
Monthly. Avg. Daily Maximum
_Frequency
Type
Location
0.288 MGD
Continuous
Recording
I or E
81.0 pg/l
Quarterly
Grab
E
Quarterly
Grab
E
Quarterly
Grab
E
Quarterly
Grab
E
30.0 mg/I
Quarterly
Grab
E
3.2 p g/I
Quarterly
Grab
E
**Chronic Toxicity (Ceriodaphnia) P/F at 90%; August, November, February, and May; See Part I11, Condition E. Whale Effluent -1-cmc ity
testing shall coincide with all chemical testing.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

1 A. (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No.
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 002. Such discharges shall be limited and monitored by the permill.ee as specified below:
Effluent Characteristics
Flow
Trichlorethene
EPA Method 624
EPA Method 625
Chronic Toxicity"
TSS
1,1 Dichloroethene
* Sample locations: E - Effluent
Discharge Limitations
Monitoring
Requirements
Measurement
Sample
*Sample
Monthly. Avg Daily Maximum
Frequency
Type
Location
0.36 MGD
Continuous
Recording
I or E
81.0 µg/I
Quarterly
Grab
E
Quarterly
Grab
E
Quarterly
Grab
E
Quarterly
Grab
E
30.0 mg/I
Quarterly
Grab
E
3.2 µg/I
Quarterly
Grab
E
**Chronic Toxicity (Ceriodaphnia) P/F at 90%; August, November, February, and May; See Part 111, Condition E. whole Effluent Toxicity
testing shall coincide with all chemical testing.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

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EVALUATION ANALYSIS REPORT PAGEzGM aa.
—:- �— Py
PERMIT--NC0083658 PIPE--001 REPORT PERIOD: 9411-9510 LOC --- E
FACILITY--AAF/MCQUAYr INC. DESIGN FLOW-- .2880 CLASS--
LOCATION--WILMINGTON REGION/COUNTY--08 NEW HANOVER
50050 TGP3B 00400 78391
MONTH Q/MGD CERI7DPF PH TRICLETE
LIMIT F .2880 NOL 9.0 6.0
94/11 .1060 2 LESSTHAN
94/12 .1060 2
95/01 .0940 1
95/02 .1040 1 LESSTHAN
95/03 .1160
95/04 .1030
95/05 .1180 2 LESSTHAN
95/06 .1240 1
95/08 .0660
95/09 .0390 1 .0000
95/10
AVERAGE .0976 1 .0000
MAXIMUM .1240 2
MINIMUM .0390 1
UNIT MGD PASS/FAI SU UG/L

-- ----- 12/29/95
QcmFr IANCE EVALUATION ANALYSIS REPORT PAGE 1
PERMIT--NC0083658
PIPE--001 REPORT PERIOD: 9311-9410 LOC --- E
FACILITY--AAF/MCQUAY, INC.
DESIGN FLOW-- .2880 CLASS--
LOCATION--WILMINGTON
REGION/COUNTY--08 NEW HANOVER
50050
TGP3B
00400
78391
MONTH
Q/MGD
CERI7DPF
PH
TRICLETE
LIMIT F
.2880
NOL
9.0 6.0
94/08
.0620
2
LESSTHAN
94/09
.0940
3
.5000
94/10
.0760
1
8.5-8.5
AVERAGE
.0773
2
.5000
MAXIMUM
.0940
3
8.500
.5000
MINIMUM
.0620
1
8.500
.5000
UNIT
MGD
PASS/FAI
SU
UG/L

SOC PRIORITY PROJECT: YES
If Yes, SOC No.
To: Permits and Engineerin nit
Water Qualitx_ Sectios�
Attention:
Susan Robson
{R view Engineer
Date: July 24, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: New Hanover
Permit No. NCO083658
PART I - GENERAL INFORMATION
1. Facility and Address: Heatcraft Facility
Lennox International, Inc.
Post Office Box 799900
Dallas, Texas 75379
2. Date of Investigation: July 24, 1996
3. Report Prepared by: Edward Beck
4. Person Contacted: Gerald Sommers [phone]
NO X
5. Directions to Site: The facility is located south of
Wilmington on Sunnyvale Drive approximately 0.5 mile west of
the junction with Carolina Beach Road.
6. Discharge Point(s), List for all discharge points:
Latitude: 340 10' 33" Longitude: 770 56' 05"
Attach a USGS map extract and indicate treatment facility site
and discharge point on map.
U.S.G.S. Quad No: U.S.G.S. Quad Name: Wilmington
7. Site size and expansion area consistent with application ?
X Yes No If No, explain:
8. Topography: Elevation appx. 25 to 30 feet msl. Probably not
within the flood plain.
9. Location of nearest dwelling: 600 feet
10. Receiving stream or affected surface waters:

PART II -
1. a.
b.
c.
Unnamed tributary to Barnards Creek
a. Classification: Class C Swampwater
b. River Basin and Subbasin No.: 03-06-17
C. Describe receiving stream features and pertinent
downstream uses: Tributary to the Cape Fear River.
Becomes tidal approximately 0.4 mile downstream of
the proposed point of discharge.
DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
Volume of Wastewater to be permitted: 0.288 MGD (Ultimate
Design Capacity).
What is the current permitted flow limit? 0.288 MGD
Actual treatment capacity of the current facility
(current design capacity)? 0.5 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: ATC was issued April 29, 1994
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The system
consists of three tanks with installed air stripping
units operated in series, two carbon filters, flow meter,
automatic controls and telemetry system.
f. Please provide a description of proposed wastewater
treatment facilities: No construction proposed
g. Possible toxic impacts to surface waters: Dissolved
constituents of solvents
h. Pretreatment Program (POTWs only): not needed
2. Residuals handling and utilization/disposal scheme: NA
3. Treatment plant classification: No Rating
4. SIC Code (s) : 3498 (Previous activity)
Wastewater Code(s) Primary: 66
Main Treatment Unit Code: 56
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved? NA
2. Special monitoring or limitations requests: See recommendations
3. Important SOC, JOC or Compliance Schedule dates: NA

4. Alternative Analysis Evaluation:
Spray Irrigation: Not sufficient space
Connection to Regional Sewer System: The City of Wilmington
has denied a request to connect to the sewer.
Subsurface: There is limited space and the consultant is
concerned that onsite disposal would spread the contaminant
plume.
PART IV - EVALUATION AND RECOMMENDATIONS
The company used solvents including TCE, TCA and Carbon
tetrachloride to degrease refrigeration coils which were
manufactured at the facility. Several spills occurred in the
past and contaminated soil was removed as an initial cleanup
activity. The factory is no longer in operation. Organic
constituents have been identified in the limestone aquifer as
well as the shallow aquifer. The existing remediation system
pumps and treats contaminated groundwater from two recovery
wells at an average rate of approximately 50 GPM. The rate
may increase as the constituent concentration decreases.
The system appears to function very well producing a very
clear effluent. The sediment filters which were initially
installed were found to not be needed and were removed.
Additional controls telemetry units have been installed to
improve operation and alert the operator of problems.
Automatic sensors shut the system down in case of failure and
call until someone responds. The system appears to be highly
efficient and well operated.
It is recommended that a permit be drafted and placed at
notice containing the same limits and monitoring requirements
as in the existing permit. If there are no significant
adverse comments, it is recommended that the permit be
reissued for a period of five years consistent with the
basinwide permitting strategy.
Signature of report preparer
C�
Water Quality Regional Supervisor
EB: NC83658.076
cc: Wilmington Regional Files
Central Files
c2 5' t/,
Date