NCG510549_More Information (Received)_20180411

04/07/94 15:23 ''704 529 5298
NATIONAL ENVIRON
L 002. 008
State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Envirommtcnrai Management
P.O. Sox 29535
Raleigh, NC 27626-0535
RECEIVED
WArrti QUALITY SECTION MAY 2 4 i,-
POLLUTION CONTROL. BRANCH
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04:07.94 15:24 %2704 529 5298 NATIONAL ENVIRON
hKun Lcrl WI1i ,N L+UML1IT :nr.14IiWn iU
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0] 003r008
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Env mental went
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor A. Pre wn Howard,, Jr., P.E.
William W. Cobcy, Jr., Secretary Acting Director
January 8, 1993
Paul Washington
Spruce Pine Community Hospital
P.0.Box 9
Spruce Pine, NC 28777
Subject: General P'errnit NCGS 10000
Cert. of Coverage Nt' 510002
Grnaadwater Reinediation Project
Mitchell County
Dear Mr. Washing n:
In accordance with your application for an NPDES discharge permit received May 26,1992 by the
Division, we are herewith forwarding the subject Cen± cats of Coverage under the state-NPDES general
permit for the construction and operation of a groundwater remediation system consisting of a 0.0201
MOD oil/water separator, 0.036 MGD (maximum) air stripper, two sets of two-0;0144•MCiD activated
v n units (total combined maximum flow equalling 0.O2 8 MGD) and one set of final approved plans
and specifications. Authorization is hereby granted for the consuvetion and operation of this system with
discharge of treated wastewater into Beaver Creek in the ��Broad `v sin This Certificate of
Coverage is issued pursuant to the regwrements North Caro and me US Environmental Protection
Agency Memorandum of Agreement dated December 6, 1983 and as subsequently amended,
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
coverage under an individual permit, unless such demand is made, this decision shall be final and
binding: Please take notice this permit is not transferable. Part I1, E.4. addresses the requirements to be
followed in case of change of ownership or control of this discharge.
The Authorization to Construct is issued in accordant with Part III, Paragraph 2 of NPDES
Permit No. NCG5I0000, and shall be subject to revocation unless the wastewater 'treatment facilities are
constructed in acccatance with the conditions and limitations specified in permit No. NCG510000.
Regional Ofn.a;s
Asheville Fayesirriile Mooresville Raleigh Washmgtuu Wilmington Wiiristm-Salem
704f251-6208 91914564541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Ppi%tiox Prue/idea Peys
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-7n-7015
An ,Equal Opportunity Affirmative Action Employer
TCITAL P. L2

04/07/94 15:24
12704 529 5298
NATIONAL ENVIRON
State of North Carolina
Department of Environment, Health and Natural
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor
William W. Cobey, Ir., Secretary
December 11, 1992
Paul Washington
Spruce Pine Community Hospital
P. O. Box 9 >;� ti-." .r _ : f
Spruce Pine, NC 28777
N191�
'POLO 1U,ONiRUL
i•
a 004!008
017.711
12 I 11,;
BAN 41993` J:JJ
i
A. Preston Howard, Ir., P.E.
Acting Director
Subject: General Permit NCG5 10000
Cert. of Coverage NCG510002
Groundwater Remediation Project
Mitchell County
Dear Mr. Washington:
In accordance with your application for an NPDES discharge permit received May 26, 1992 by the
Division, we are herewith forwarding the subject Certificate of Coverage under the state-NPDES general
permit for the construction and operation of a groundwater remediation system consisting of a 0.0201
MGD oil/water separator, 0.036 MGD (maximum) air stripper,, two seas of two 0.0144 MOD activated
carbon units (total combined maximum flaw equalling 0.0288 MGD) and one set of final approved plans
and specifications. Authorization is hereby granted for the construction and operation of this system with
discharge of treated wastewater into Paw Creek in the Catawba River Basin. 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.
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
coverage under an individual permit. Unless such 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 to Construct is issued in accordance with Part III, Paragraph 2 of NPDES
Permit No. NCG510000, and shall be subject to revocation unless the wastewater treatment facilities are
constructed in accordance with the conditions and limitations specified in Permit No_ NCGS10000.
Asheville Fayetteville Mooresville
704(251.6208 919/486-1541 704/663-1699
Regional Offices
Raleigh Washington
919/571-4700 919/946-6481
Wilmington Winston-Salem
919/395-3900 919/896-7007
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

04/07/94 15:25 /S1704 529 5298 NATIONAL ENVIRON
CJ005,008
Permit Number NCG510000
Authorization to Construct
Spruce Pine Community Hospital
Page 2
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 Asheville Regional Office, telephone number. [phone], shall be nodded 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, 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 Perrnittee for the
life of the facility.
The Operational Agreement between the Permittee and the Environmental Managemenp
Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance with the
terms of the Operational Agreement shall subject the Permittee to all sanctions provided by G. S_ 143-
215.6 for violation of or failure to act in accordance with the terms and conditions of this Permit.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Environmental Management in accordance .°.
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 Environmental
Management 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 Susan Robson, telephone
number 919/733-5083.
Sincerely,
0 r1 %na H. Staay
nt
A. Prson Howard, Jr., P.E.
cc: Mitchell County Health Department
Asheville Regional Office, Water Quality
Training and Certification Unit
Facilities Assessment Unit
Sanjay A. Patwardhan, Consulting Engineer
Asheville Regional Office, Groundwater
Jack Floyd, Groundwater Section, Permits -Unit

04/07/94 15:26 $`704 529 5298 NATIONAL ENVIRON
006f0os
Permit Number NCG510t3(}0
Spruce PiLeSammunirylt,spital
December 11. 1992
agrneer',LCGrtificuiOil
I, , as a duly registered Professional Engineer in the Stare of North
Carolina, having been authorized to observe (periodically, weekly, full rime) the construction of the
project, for the
Project Name Location
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 the approved plans and specifications.
Signature Registration No.
Date

04/07/94 15:26
0704 529 5298 NATIONAL ENVIRON
( 007•'iuOS,
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DWISION OF ENVIRONMENTAL MANAGEMENT
s";ENERAL PERMIT NO. NCGS10000
CERTIFICATE OK CO'VERAG . NO. NC'G510002,
TO DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SINI LIAR WASTEWATERS
UNDER THE
INAIBUSAI, POLLUTANT DISCHARGE ELIMINATION ,SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.], other lawful standards and
regulations protnnlgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Po1lution Control Act, as amended,
Spruce Pine Community Hospital
is hereby authorized to construct and operate a groundwater treatment system consisting of.a primary filter, an
oil/water separator, an air stripping system and ',carbon f ltr'ara j for petroleum contaminated groundwater or similar
waste streams with the discharge of treated wa,tewater from a facility located at
Spruce Pine
Mitchell County
to receiving waters designated as Beaver Creek in the French Broad River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Pam I, 11. IIl
and IV of General Permit No. NCG00510000 as attached.
This Certificate of coverage shall become effective December 23,1992
This Certificate of Coverage shall remain in effect for the duration of the General Permit,
Signed this day December 23,1992
Original Signed i3y,
Coleen H. Sullins
A. Preston Howard, Jr., P.E., Acting Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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Spruce Pine, North Carolina
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North Carolina Department Of
Environment, Health, & Natural Resources
Spruce Pine Hospital
Spruce Pine, North Carolina
Recovery Well Schematic

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Spruce Pine, North Carolina
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NATIONAL ENVIRONMENTAL TECHNOLOGIES
9400-E Southern Pine Boulevard
Charlotte, NC 28273
704/529-5551
TRANSMITTAL
FAX [phone]
DATE 101 13
PROJECT NO. r(3oJI
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ENCLOSED:
_ Lists
_ Prints
_ Reproducibles
_ Specs
tt Reports
Diskettes
THESE ARE:
. Preliminary
_ No Exceptions
_ Exceptions Noted
_ Final
_ Revision
FOR:
Information
_ Reference
Review &+r,c.Llui
Bid
Contract
_ Construction
Construction Revision
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DOCUMENT OR NO. OF
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OCT 1 2 .
POLLUTION CONTROL BRAVO
BY:

October 06, 1993
Ms. Susan Robson
North Carolina Department of Environment,
Health and Natural Resources
Division of Environmental Management
Permits and Engineering
512 North Salisbury Street
Raleigh, North Carolina 27611-7687
RFCF IIFD
OCT 1 2 V.
POLLUTION CONTROLBRANCH
SUBJECT: NPDES Permit Application: General Permit NCG510000
Certificate of Coverage: NCG510002
Spruce Pine Community Hospital
Spruce Pine, Mitchell County, North Carolina
Project# 113031
Dear Ms. Robson:
National Environmental Technologies (NET) is providing environmental engineering and
consulting services to the North Carolina Department of Environment, Health and Natural
Resources (NCDEHNR) for a No. 2 fuel oil contamination project at the Spruce Pine
Community Hospital at Spruce Pine, North Carolina.
NET has proposed the installation of a ground water remediation system to extract and treat the
contaminated ground water at this site. The effluent from the treatment system is proposed to
be discharged into Beaver Creek in the French Broad River Basin.
On behalf of the client, NET had submitted an NPDES permit application on May 13, 1992
(permit application number NC0082333; new general permit number NCG510002). In a letter
dated December 11, 1992, the NCDEHNR indicated that the NPDES discharge permit had been
approved and authorization was granted for construction and operation of this system.
Recently, however, the following changes have been made in the conceptual design of the
treatment system:
a. Interceptor Trench: Instead of installing a mop skimmer, the trench is proposed to be
filled with pea gravel and collection points consisting of 6 inch perforated PVC pipes will
be installed vertically in the trench. Pumps will be installed at these collection points and
contaminated ground water will be pumped to the treatment system. This may lead to
a significant increase in the amount of groundwater requiring treatment.
b. Maximum Flow: Only four recovery wells were proposed in the original NPDES permit
and the treatment system was sized to treat a flow rate of 14 gpm. A total of 10
recovery wells are proposed at this time. With the increased flow from the additional

Ms. Susan Robson
October 6, 1993
Page 2
recovery wells and the interceptor trench, the flow to the treatment system may be as
high as 50 gpm.
The treatment equipment proposed in the original NPDES permit application are not
capable of handling such high flows, thus, a modified treatment system design is
required.
The ground water treatment system at Spruce Pine still consists of an oil/water separator, a
shallow tray aeration system, and an activated carbon unit. However, these units were
redesigned to handle a total flow rate of 50 gpm. Enclosed please find an engineering report
that details the recent revisions to the design of the treatment system and replaces the sections
2,3,4,5 of the original NPDES permit submitted to NCDEHNR on May 13, 1992. The detailed
treatment equipment specifications and treatment system layout are provided in the enclosed
report.
It may be noted that no treatment system is currently proposed at the retention basin located
north-west of the Spruce pine Community Hospital. However, there is a possibility that a mop
skimmer system will be installed at a later date at this location. A mop skimmer system would
skim only the oil from water surface and would discharge the oil into an oil holding tank located
near the retention basin. The oil would be hauled off the site for recycling. No water will be
pumped from the retention basin to the treatment system. Hence, no additional information is
provided at this time about the mop skimmer system at the retention basin.
Please review the enclosed information regarding the treatment system components and issue a
revision to "authorization for construction and operation of the treatment system" at the
referenced site.
If you have any additional questions or need any additional information, please contact me at
(704)-529-5551.
Very truly yours,
NATIONAL ENVIRONMENTAL TECHNOLOGIES, P.A.
Sanjay A. Patwardhan
Project Engineer
SAP/MAF/deb
•

ENGINEERING REPORT
REVISION OF TREATMENT SYSTEM DESIGN
z
NPDES PERMIT APPLICATION
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT,
HEALTH, AND NATURAL RESOURCES
Spruce Pine Community Hospital
Spruce Pine, North Carolina
Groundwater Incident # 3569
Prepared by:
National Environmental Technologies, P.A.

TABLE OF CONTENTS
Section Page No.
1. PROPOSED GROUNDWATER REMEDIATION SYSTEM 1
1.1 Interceptor Trench 1
1.2 Recovery Wells 1
1.3 Detention Basin Skimmer System 1
2. FLOW ORIGIN AND TYPE 3
3. WASTEWATER CHARACTERIZATION 4
4. TREATMENT OF CONTAMINATED GROUNDWATER 6
4.1 Oil/Water Separator 8
4.2 Air Stripping Unit 10
4.3 Activated Carbon Unit 12

LIST OF FIGURES
FIGURE 1. Treatment System Schematic
FIGURE 2. Hydraulic Profile and Mass Balance
FIGURE 3. Treatment System Layout
LIST OF TABLES
TABLE 1 Summary of Analytical Data and Estimate of Influent concentrations
TABLE 2 Systems Controls/Instrumentation
TABLE 3 Removal Efficiency and Effluent Concentrations from Air Stripper
LIST OF APPENDICES
APPENDIX A Analytical Results
APPENDIX B Calculation Sheet: Estimate of influent concentrations
APPENDIX C Specifications - Oil/water separator
APPENDIX D Specifications - Air Stripper
APPENDIX E Specifications - Activated Carbon Units

1.0 PROPOSED GROUNDWATER REMEDIATION SYSTEM
The proposed system will be designed to remove both No. 2 fuel oil and contaminated
groundwater at the Spruce Pine Community Hospital. Design of the remediation system is
comprised of several components including an interceptor trench and recovery wells. The
components of remediation system are described below.
1.1 Interceptor Trench
An interceptor trench will be constructed parallel to the U.S. Highway 19E. The
purpose of the interceptor trench is to prevent further migration of the free product
plume.
The trench will be designed to intercept the water table and collect both groundwater and
free product. The trench will be filled in with pea gravel and at certain interval,
collection points consisting of 6 inch diameter perforated PVC pipes will be installed
vertically. Submersible pumps will be installed in these collection points to pump both
the free product and ground water in the trench to the treatment system.
1.2 Recovery Wells
TV
A total of 10 recovery wells are proposed across the contaminated site to remove free
product and contaminated groundwater from the subsurface near the hospital. At present,
there are only two recovery wells in place. All the recovery wells will consist of six-
inch diameter PVC riser and well screen. Pumps will be installed in the recovery wells
so that both the free product and contaminated groundwater can be pumped out from the
recovery wells to the treatment system.
1.3 Detention Basin Skimmer System
The migration of free product at the site has been influenced heavily by the existing
underground utilities. A substantial amount of free product is migrating from the site,
along the underground utilities, and is accumulating in a detention basin approximately
950 feet northwest of the former underground storage tank area at the hospital. Water
collected in the storm water detention basin discharges directly to the North Toe River.
In an effort to recover free product before it reaches the North Toe River, a rope/mop
skimmer system will be installed at the detention basin. The skimmer system will collect
and remove only free product from the detention basin. The free product recovered from
the detention basin will be collected in an oil holding tank located near the basin. The
contents of the holding tank will be pumped out periodically by a licensed waste oil
d:\pwork\ 113031 \npdes. fin 1

recycling firm. It may be noted that no treatment system is currently proposed at the
retention basin and the proposed skimmer system will remove only free product from the
detention basin and will not discharge any additional water to the treatment system.
Hence, no additional information is provided at this time about the mop skimmer system
at the retention basin.
d:\pwork\113031\npdes.fin 2

2.0 FLOW ORIGIN AND TYPE
Each recovery well is expected to pump a maximum of 1 gallon per minute of contaminated
ground water. A total of 10 recovery wells will pump a total of approximately 14,400 gallons
of groundwater per day to the treatment system.
An interceptor trench is proposed along U.S. Highway 19E near the Spruce Pine Community
Hospital. The purpose of the interceptor trench is to prevent further migration of the free
product plume. The proposed location for the interceptor trench is at the toe of the
embankment, parallel to and on the east side of US highway 19E.
Additional contaminated groundwater will be pumped from the proposed interceptor trench. The
trench is proposed to be filled with pea gravel and collection points consisting of 6 inch
perforated PVC pipes will be installed vertically in the trench. Pumps will be installed at these
collection points and contaminated ground water will be pumped to the treatment system. The
interceptor trench is expected to generate at least 10 gpm flow (14,400 gallons per day) for the
treatment system based on actual production from a borehole drilled during the assessment
phase.
To account and allow for any future expansion of the treatment system, a maximum of 50
gallons per minute (72,000 gallons per day) flow rate is expected and is used as the basis of the
treatment system design.
d:\pwork\113031\npdes.fin 3

3.0 WASTEWATER CHARACTERIZATION
On October 7, 1991, groundwater samples were collected from monitoring wells and were
analyzed using EPA method 602. The highest concentration of benzene was reported in
monitoring well MW-9 (150 ppb). A water sample collected from MW-8 reported the highest
concentrations of toluene (170 ppb), ethylbenzene (76 ppb), and xylene (290 ppb). A
groundwater sample collected from MW-12 on May 14, 1992 was analyzed using EPA methods
601 and 602 and reported the highest concentrations of phenol (estimated at 380 ppb) and
naphthalene (470 ppb).
A groundwater sample was collected directly beneath the free product in a recovery well (RW-2)
on September 1, 1993 to estimate the highest concentrations of dissolved contaminants in the
groundwater. The water sample was analyzed by EPA methods 602 and 625. A copy of the
analytical data is enclosed in Appendix A. This analytical data was used to estimate the actual
influent concentrations to the treatment system. The assumptions and detailed calculations are
enclosed in Appendix B.
Table 1 summarizes the analytical data gathered to date and the estimated influent concentrations
to the treatment system.
d:\pwork\113031\npdes.fin 4

Estimated Influent
Concentration*"
a
ON
543 ppb
408 ppb
4
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883 ppb
2400 ppb
a
o
380 ppb
Data from Recovery
Well (RW-2)"
4600 ppb
3900 ppb
3400 ppb
13000 ppb
4600 ppb
24000 ppb
1700 ppb
< 400 ppb
Data from Monitoring Wells
a
oN
170 ppb
a
290 ppb
470 ppb
0
0
380 ppb"
Contaminant
Benzene
a)
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Ethyl benzene
PC''
Naphthalene
Bis(2-ethylhexyl) phthalate
0
a
a
Estimated concentration
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d: \pwork\ 113031 \npdes. fin

4.0 Treatment of Contaminated Groundwater
The treatment system will consist of an oil/water separator tank followed by an air stripping
unit. As a polishing step, effluent from the air stripper will be passed through two liquid phase
granular activated carbon canisters placed in series. The effluent from the treatment system will
be pumped to a storm sewer that drains directly to the North Toe River.
Figure 1 is a schematic of the proposed groundwater treatment system showing the
instrumentation and controls. Figure 2 shows a hydraulic profile and mass balance at various
stages of the treatment system. Figure 3 is a layout of the treatment system. Details of the
system instrumentation and controls are listed in Table 2. A detailed description of each of the
major components of the proposed treatment system is discussed in the following sections.
d:\pwork\ 11303 1\npdes.fin

REV.
DATE DESCRIPTION ON
APPROVED
1000 GAL.
OIL HOLDING
TANK
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AIR PRESSURE GAUGE
---- FUTURE INFLUENT LINES
IT INTERCEPTOR TRENCH
NATIONAL ENVIRONMENTAL TECHNOLOGIES, INC.
GROUND WATER FROM
RW-1 IT RW-2
1 1 1
0 0
SP-1
SP-11
OIL/WATER SEPARATOR
-04- SP-4
AIR STRIPPING
UNIT
SP-5
SP-7 SP-8
SP-12
SP-16
SP-2
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TO NPDES DISCHARGE LOCATION
DATE CLIENT/iRLE
10/4/93
DRAWN
KF
DESIGNED
SP
CHECKED
SP-10
SP-15
NC DEHNR
Spruce Pine Community Hospital
Treatment System Schematic
Figure 1
Charlotte, NC
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High Level =ON; Low Level =OFF
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event of blower failure or pressure buildup due
to fouling of the aeration plates. Prevents discharge
of untreated effluent in blower malfunctions.
High level float in the shallow tray aeration system's
sump deactivates recovery well pumps to prevent an
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d:\pwork\ 113031\npdes. fin

4.1 Oil/Water Separator
The contaminated ground water will be pumped from each of the recovery wells and in the
future, from the interceptor trench to the treatment system via 1 inch PVC pipes. Water will
flow through in -line filter units to remove particulates and will flow into an elevated oil/water
separator. The oil/water separator is manufactured by Hydro -Flo Technologies, Inc. (model
number DP-24/STL/#34/O). The manufacturer's specifications, drawings and information on
this unit are enclosed in Appendix C for your review.
Inside the oil/water separator, the water flow enters into an inlet chamber where it is evenly
dispersed through a non clog diffuser across the width and depth of the unit. The solids in the
water fall out of suspension before entering the separation chamber. The solids get collected
into a sludge collection chamber that has a minimum capacity of 56 gallons. The solids
collected in this sludge collection chamber can be removed periodically through a sludge
cleaning port provided at the bottom of this unit.
The separation chamber in the oil/water separator consists of oleophilic coalescing plates inclined
at an angle of 60 degrees. The solids in the water slide down these plates and get collected in
the sludge collection chamber. The oil droplets get coalesced along the incline of these plates
and rise to the top of the water surface. The oil is collected by a rotary pipe skimmer and
drained by gravity into a waste oil holding tank. Baffles are provided in the chamber to avoid
escape of oil to the effluent chamber.
The oil/water separator unit will be installed on a 30" tall stand so that the water outlet of the
oil/water separator is 6" higher than the top of the air stripping unit and the oil outlet of the
oil/water separator tank is 12" higher than the top of the 1000 gallon oil holding tank located
inside the building. Ground water will flow out of the oil/water separator tank into an air
stripping tower by gravity. The No. 2 fuel oil in the holding tank will be hauled away by a
licensed waste oil recycling firm.
d:\pwork\113031\npdes.fin 8

Design Specifications for Oil/Water Separator:
Manufacturer: Hydro -Flo Technologies, Inc.
Overall Dimensions: 66" Long x 30" wide x 45" high
Design Flow Rate: 34 gpm @ 20 microns to 77 gpm @ 30 microns
Oil Droplet Removal Rate: 10 mg/L of oil droplets > 20-30 microns
Coalescing Media Pack Size: 24" wide x 36" deep x 48" long
Minimum Coalescing Surface Area: 1632 sq. ft.
Maximum Cross Sectional Velocity: 0.75 to 1.72 ft/min
Minimum Separation Chamber Retention Time: 10 to 7.48 minutes
Sludge Chamber Capacity: 56 gallons
Device for Oil Removal: Rotary Pipe Skimmer
d:\pwork\113031\npdes.fin 9

4.2 Air Stripping Unit
Due to the high volatility of many of the soluble constituents in No. 2 fuel oil that remain in the
contaminated ground water, air stripping is expected to be an efficient and cost effective method
of treating the ground water. Air stripping transfers the pollutants removed from the
contaminated water to the air.
Among the contaminants expected to be present in the influent to the treatment system, benzene,
toluene, ethylbenzene, xylene are highly volatile (These compounds have a high Henry's Law
Constant) and hence can be easily removed from the water by air stripping. The Henry's law
constant for naphthalene, phenol, Bis(2-ethylhexyl)phthalate, and phenanthrene are comparatively
low and are not expected to be appreciably removed from water by air stripping.
The Shallow Tray aeration system is manufactured by North East Environmental Products Inc.
The shallow tray process uses forced draft, countercurrent air stripping through baffled aeration
trays to remove volatile organic compounds from water. Contaminated water gets sprayed from
the top into the inlet chamber through a coarse mist spray nozzle. The water flows over a flow
distribution weir and along the baffled aeration tray. An air blower located at the bottom of the
unit provides 600 cfm of air inside the aeration unit. Air travels upwards through 3/16"
diameter holes in the aeration tray, forms a froth of bubbles approximately 6" deep on the
aeration tray, generating a large mass transfer surface area where the contaminants are
volatilized. The air picks up the contaminants in the water and exits the aeration unit at the top.
The air is vented out to the atmosphere.
Water gets collected in the sump provided at the bottom of the unit. A discharge pump located
near the sump transfers the water to the activated carbon drum. The sump is equipped with a
high level float switch that would shut down the recovery well pumps in case the pump
malfunctions or there is an overflow of water coming into the aeration unit.
Information regarding the influent contaminant concentrations, flowrate, and the effluent
requirements was provided to North East Environmental Products, Inc. Based on this
information and the test database, North East Environmental Products Inc. recommended the use
of their model 2621. This model incorporates use of two aeration trays and has higher
contaminant removal efficiency as compared to the one tray unit. It may be noted that this two
tray aeration system can be easily upgraded to obtain even higher contaminant removal efficiency
if required in the future. The modular design of this unit allows for addition of trays which
would increase the percent removal of contaminants.
d:\pwork\113031\npdes.fin 10

Design Specifications for Aeration System:
Manufacturer: North East Environmental Products, Inc.
Model Number: 2621
Air Flow Rate: 600 cfm
Water Flow Rate: 1-90 gpm
Air/Water ratio: 89.8 cu.ft./cu.ft.
Number of Trays: 2
Overall Dimensions: 6'-2" long x 4' wide x 5'-9" tall
The manufacturer's estimate of removal efficiency and expected effluent concentrations are
summarized in Table 3. The detailed specifications and computer modeling results are enclosed
in Appendix D for your review.
Table 3: Removal Efficiency in Air Stripper
Contaminant
Influent
Concentration, ppb
Effluent
Concentration, ppb
% Removal
Benzene
595
6
99.00 %
Toluene
543
7
98.77 %
Ethyl Benzene
408
4
99.15 %
Xylene
1561
13
99.22 %
Naphthalene'
883
883
No Removal
Bis(2-ethylHexyl)
Phthalate*
2400
2400
No removal
Phenanthrene*
170
170
No removal
Phenol*
380
380
No removal
* No estimate of removal was provided by the manufacturer. It is assumed that these
contaminants will not be stripped by the unit.
d:\pwork\113031\npdes.fin 11

4.3 Activated Carbon Unit
The activated carbon unit will receive effluent of the air stripping unit. Among the contaminants
of concern, phenol, phenanthrene, Bis(2-ethylhexyl)phthalate and naphthalene are very difficult
to strip from water. Hence, the influent water to the carbon unit is expected to have high levels
of these contaminants and very low levels of benzene, toluene, ethyl benzene and xylene.
The carbon system will be provided by Continental Environmental Services. The 2001b carbon
drums can typically handle flow rates of up to 10 gpm. As the maximum flow rate to the
system is 50 gpm, flow from the shallow tray aerator unit will be divided into five streams
capable of handling 10 gpm each.
Each stream will pass through two granular activated carbon drums connected in series. The
first carbon drum will receive the water and will remove trace contaminants. Pressure gauges
will be installed before and after each carbon drum to detect any pressure buildup inside the
carbon drums. High pressure buildup inside the carbon drum(s) will indicate necessitate
replacement of the carbon drum(s). Breakthrough will occur in the first carbon drum when all
the adsorption sites on the activated carbon get filled by contaminants. A sampling port between
the two vessels will be used to monitor the breakthrough of contaminants in the first carbon
drum.
Once a breakthrough of contaminants in the first carbon drum is detected, the first carbon drum
will be replaced by a new carbon drum. The second carbon drum, originally used as a backup
unit will then function as the first carbon drum on treatment line. The new carbon drum will
function as a backup unit until breakthrough occurs in the first carbon drum. This rotation
method of replacement allows for the most efficient use of the granular activated carbon.
Enclosed please find the detailed specifications as provided by the manufacturer of the carbon
unit. Information regarding the flow rate and the concentrations of contaminants in the influent
to the carbon unit was provided to the manufacturer. The manufacturer's estimate of the carbon
usage rates and product information is enclosed in Appendix E.
d:\pwork\ 113031\npdes. fin 12

APPENDIX A
Analytical Results

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GeoChem, Incorporated
Environmental Laboratories'
NET, INC.
OCT _2.4.1991
October 22, 1991
Mr. Mike Fiori
National Environmental Technologies
9400-E Southern Pine Blvd.
Charlotte, NC 28273
Reference: NET #113003
Spruce Pine, NC
GCI# 9110-024
Dear Mr. Mike Fiori:
This is the analytical report for the above referenced
project. On October 7, 1991 we received six water samples for
analysis. The -analytical and quality control results are presented
in separate tables for your convenience. Brief summaries of
analytical methods employed are as follows.
BTEX (EPA method 602)
Samples are loaded into a specially designed purging chamber
at ambient temperature. Helium is bubbled through the sample.
This drives the organics onto a sorbent trap. Once purging has
been completed the sorbent column is rapidly heated. This
efficiently transfers the organics into the gas chromatograph which
separates the components of the sample. The purgeable organics are
then detected using flame ionization and photo ionization
detectors.
If there are any technical questions please feel free to call
me at 919-460-8093. Thank you for allowing GrocHEM to serve your
analytical needs.
President
261V] 1_`afe._ 1A/w_ne.wlee._ Qlvri C..ae._ 2fV1_ \I"r_.4 it Mr 775CA_

a
GeoChem, Incorporated
Environmental Laboratories
Geochem(NC #336/SC #99008)
Project#9110-024 1 Site Name NET#113003/Spruce Pine
LAB ID. 3430 3425 3426
DATE SAMPLED 10/3/91 10/3/91 10/3/91
FIELD ID. MW-5 MW-6 MW-7
METHOD
ANALYTE
BTEX
ua/1 nal
ua/1 nal uall Dal
Benzene BDL 0.5 1.5 0.5 BDL 0.5
Toluene BDL 28 BDL
Ethylbenzene BDL 29 BDL
Xylenes BDL 92 BDL
LAB ID. 3427 3428 3429
DATE SAMPLED 10/3/91 10/3/91 10/3/91
FIELD ID. MW-8 MW-9 MW-11
METHOD
ANALYTE ua/1 cal
BTEX
uc/1 nal
ua/1 nal
Benzene 35 0.5 150 0.5 71 0.5
Toluene 170 BDL BDL
Ethylbenzene 76 2.4 5.7
Xylenes 290 8.7 8.5
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pql = practical quantitation limit due to matrix effects.
bdl = below method detection limit.
bql = below ouantitation limit.
GM" /±_,_ 1l!__ na__J Ia,__],__ AMA _ ►1_is A A1rnA

L �
GeoChcm, Incorporated
Environmental Laboratories
QUALITY CONTROL RESULTS
METHOD
602
Benzene
Toluene
Ethylbenzene
Xylenes
RECOVERY METHOD
DETECTION LIMIT
103 %
96 %
96 % 0
94 % 0
0.5 ppb
REVIEWED BY
AO
2500 Bate Wav Cantra Rivri_ _Suite_ 3o_ • Morrisville_ NC_ 27560

GeoChem, Incorporated
Environmental Laboratories-
Febuary 3, 1992
Ms. Jennifer Allender
National Environmental Technologies,
9400-E Southern Pine Blvd
f , ?'
Charlotte, NC 28273 �U�J
O �'
Reference: NET # 113007 j�9:
Spruce Pine, NC c—
GCI# 9201-078
Dear Ms. Jennifer Allender:
This is the analytical report for the above referenced
project. On January 17, 1992 we received two water samples for
analysis. The analytical and quality control results are presented
in separate tables for your convenience. Brief summaries of
analytical methods employed are as follows.
BTEX (EPA method 602)
Samples are loaded into a specially designed purging chamber
at ambient temperature. Helium is bubbled through the sample.
This drives the organics onto a sorbent trap. Once purging has
been completed the sorbent column is rapidly heated. This
efficiently transfers the organics into the gas chromatograph which
separates the components of the sample. The purgeable organics are
then detected using flame ionization and photo ionization
detectors.
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560

- - GeoChem, Incorporated
Environmental Laboratories-
Semivolatiles EPA 625
This method is used to determine the concentration of
semivolatile organic compounds in extracts prepared from waste
water and ground water. The components are separated via gas
chromatograph and detected using a mass spectrometer. This method
can be used to quantify most neutral, acidic, and basic organic
compounds that are soluble in methylene chloride.
If there are any technical questions please feel free to call
me at 919-460-8093. Thank you for allowing GRoOlatmx to serve your
analytical needs.
Sincerely/1
`PSean Gokel
President
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560

GeoChem, Incorporated
Environmental Laboratories.
Geochem (NC # 336/SC # 99008)
Project#9201-078 1
Site Name NET # 113007
LAB ID. 0368 0369
DATE SAMPLED 1/15/91 1/16/92
FIELD ID. MW-14 MW-13
METHOD
ANALYTE uafl cal ua/l pal
625 Base/Neutral
1,2,4-Trichlorobenzene BDL
Bis2Chloroethyl Ether BDL
1,3-Dichlorcbenzene BDL
1,4-Dichlorobenzene BDL
1,2-Dichlorobenzene BDL
Bis2ChloroisopropylEthr BDL
Hexachloroethane BDL
n-Nitrosodipropylamine BDL
Nitrobenzene BDL
Isophorone BDL
Bis2ChloroethoxyMethane BDL
Naphthalene BDL
Hexachlorcbutadiene BDL
Hexachlorcyclopentadien BDL
2-Chloronaphthalene BDL
Acenaphthylene BDL
Dimethylphthalate BDL
2,6-Dinitrotoluene BDL
Acenaphthene BDL
2,4-Dinitrotoluene BDL
Fluorene BDL
4ChlorophenylPhenylEthe BDL
Diethylphthalate BDL
n-Nitrosodiphenylamine BDL
4-BromophenylPhenylEthe BDL
Hexachlorobenzene BDL
10
Base Neutrals continued on the following page
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
10
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pql = practical quantitation limit due to matrix effects.,
bdl = below method detection limit.
bq1 = below quantitation limit.
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
T__ 1_—L__—__ w!wea w_r......wPa.,. . 4nw.w.•.w

GeoChem, Incorporated
Environmental Laboratories
Geochem (NC # 336/SC m 99008)
Project09201-078 2
Site Name NET 0 113007
LAB ID. 0368 0369
DATE SAMPLED 1/15/91 1/16/92
FIELD ID. MW-14 MW-13
METHOD
ANALYTE ua/1 nal ug/1 tal
625 B/N Continued
Anthracene BDL 10 BDL 10
Phenanthrene BDL BDL
Di-N-Butylphthalate BDL BDL
Fluoranthene BDL BDL
Pyrene BDL BDL
Benzidine BBL 50 BDL 50
Indeno(1,2,3-cd)Pyrene BDL 10 BDL 10
Butyl Benzyl Phthalate BDL 20 BDL 20
Chrysene BDL 10 BDL 10
Benzo(a)Anthracene BDL BDL
3,3'-Dichlorobenzidine BDL 20 BDL 20
Bis2EthylhexylPhthalate BDL 10 BDL 10
Di-N-octylphthalate BDL BDL
Benzo(b)Fluoranthene BDL BDL
Benzo(k)Fluoranthene BDL BDL
Benzo(a)Pyrene BDL BDL
Dibenz(a,h)Anthracene BDL BDL
Benzo(g,h,i)Perylene BDL BDL
625 Acid axtractables
2-Chlorophenol BDL 10 BDL 10
Phenol BDL BDL
2-Nitrophenol BDL BDL
2,4-Dimethylphenol BDL BDL
2,4-Dichlorophenol BDL BDL
4-Chloro-3-Methylphenol BDL 20 BDL 20
2,4,6-Trichlorophenol BDL 10 BDL 10
2,4-Dinitrophenol BDL BDL
4-Nitrophenol BDL 50 BDL
4,6-Dinitro-2Methylphen BDL BDL 50
Pentachlorophenol BDL BDL
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pql = practical quantitation limit due to matrix effects.
bdl = below method detection limit.
bql = below quantitation limit.
Ar
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
A_ ark AMAIN i v__ non 1ae. n1M

GeoChem, Incorporated
Environmental Laboratories•
Geochem (NC # 336/SC # 99008)
Proj ect#9 2 01-078 3
Site Name NET # 113007
LAB ID. 0368 0369
DATE SAMPLED 1/15/91 1/16/92
FIELD ID. MW-14 MW-13
NETH0D
ANALYTE
BTBX
uc/1 nal uc/1 nal
Benzene BDL 0.5 BDL 0.5
Toluene BDL BDL
Ethylbenzene BDL BDL
Xylenes BDL BDL
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pql = practical guantitation limit due to matrix effects.
bdl = below method detection limit.
bgl = below quantitation limit.
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Tel... irk. ......_ A4 CL ACII_C1 88 ._ CA_V, 84� ACILAIR7

GeoChem, Incorporated
Environmental Laboratories
QUALITY CONTROL RESULTS
METHOD RECOVERY METHOD
DETECTION LIMIT
602
Benzene
Toluene
Ethylbenzene
Xylenes
625
103
99 % 0
99 % 0
103 %
Base/Neutrals
1,4-Dichlorobenzene 55
n-Nitroso-di-n-propylamine 45
1,2,4-Trichlorobenzene 41
Acenaphthene 48
2,4-Dinitrotoluene 44
Pyrene 57
o\° o\° o\° o\° o\° o\°
Acid Extractables
Phenol 55 %
2-Chlorophenol 70 %
4-Chloro-3-methylphenol 74 %
4-Nitrophenol 87 %
Pentachlorophenol 102 %
0.5 ppb
10 ppb
10 ppb
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Tninnhe ri . 01 CLA `J'LIIAQ9 • PAY. Ci n.drt).0.1.67

I• I1
{
•
GeoChem, Incorporated
Environmental Laboratories.
Ms. Jennifer Allender
National Environmental Technologies
9400-E Southern Pine Blvd.
Charlotte, NC 28273
Reference: Spruce Pine, NC
NET # 113010
GCI# 9205-064
Dear Ms. Jennifer Allender:
June 2, 1992
•
-•--.k_
�JUN- 519:92
This is the analytical report for the above referenced
project. On May 15, 1992 we received nine water samples for
analysis. The analytical and quality control results are presented
in separate tables for your convenience. Brief summaries of
analytical methods employed are as follows.
BTEX (EPA method 602)
Samples are loaded into a specially designed purging chamber
at ambient temperature. Helium is bubbled through the sample.
This drives the organics onto a sorbent trap. Once purging has
been completed the sorbent column is rapidly heated. This
efficiently transfers the organics into the gas chromatograph which
separates the components of the sample. The purgeable organics are
then detected using flame ionization and photo ionization
detectors.
EPA method 601
Samples are loaded into a specially designed purging chamber
at ambient temperature. Helium is bubbled through the sample.
This drives the organics onto a sorbent trap. Once purging has
been completed the sorbent column is rapidly heated. This
efficiently transfers the organics into the gas chromatograph which
separates the components of the sample. The purgeable organics are
then detected using a halide specific detector.
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

GeoChem, Incorporated
En.vironmental Laboratories -
Metals
Metals testing entails several distinct tests. The samples
are digested in an acidic solution prior to analysis. There are
several different digestion(s) performed depending on which
metal(s) is (are) to be analyzed and the matrix of the sample(s).
Metals such as lead and arsenic are then analyzed using a graphite
furnace A.A. Many metals can be analyzed witha Flame A.A.
If there are any technical questions please feel free to call
me at 919-460-8093. Thank you for allowing GEoCasM•to serve your
analytical needs.
a
4‘7/// Gokel
President
Sincly, ,
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

GeoChem, Incorporated
En.vironmental Laboratories.
Geochem(NC #336/SC #99008)
Project#9205-064 1 Site Name Spruce Pine, NC
LAB ID. 2326 2327 2328
DATE SAMPLED 5/14/92 5/14/92 5/14/92
FIELD ID. MW-5 MW-6 MW-7
METHOD
ANALYTE ua/1 pql uq/1 pal ug/1 pal
BTEX
Benzene BDL 0.5 BDL 0.5 BDL 0.5
Toluene BDL 44 BDL
Ethylbenzene BDL 42 BDL
Xylenes BDL 150 BDL
MTBE BDL 1.0 BDL 1.0 BDL 1.0
LAB ID. 2329 2330 2331
DATE SAMPLED 5/14/92 5/14/92 5/14/92
FIELD ID. MW-8 MW-13 ' MW-14
METHOD
ANALYTE ua/1 ccl uq/1 nal ua/1 pal
BTSX
Benzene 46 0.5 BDL 0.5 BDL 0.5
Toluene 110 BDL BDL
Ethylbenzene 53 ' BDL BDL
Xylenes 220 BDL BDL
MTBE BDL 1.0 BDL 1.0 BDL 1.0
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pqZ = practical quantitation limit
bdl = below method detection limit.
bql = below quantitation limit.
due to matrix effects.
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

•
GeoChem, Incorporated
En.vironm.ental Laboratories
Geochem(NC #336/SC #99008)
Project#9205-064 2 Site Name Spruce Pine, NC
LAB ID. 2332 2333
DATE SAMPLED 5/14/92 5/14/92
FIELD ID. MW-9 NW_11
METHOD
ANALYTE ual1 na l uc.1 nal
BTEX
Benzene 40 0.5 9.3 0.5
Toluene BDL BDL
Ethylbenzene 0.75 0.79
Xylenes 1.2 1.9
MTBE
BDL 1.0 BDL 1.0
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pq1 = practical quantitation limit due to matrix effects.
bd2 = below method detection limit.
bql = below quantitation limit.
AV
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

GeoChem, Incorporated
En.vironmental Laboratories
Geochem(NC #336/SC #99008)
Project#9205-064 3 Site Name Spruce Pine, NC
LAB ID. 2334
DATE SAMPLED 5/14/92
FIELD ID. MW-12
METHOD
ANALYTE uq/1 pql
EPA 602
Benzene 14 2.5
Toluene 33
Ethylbenzene 56
Xylenes 190
HTBE BQL 5.0
EDB BQL
IPE BQL
LAB ID. 2334
DATE SAMPLED 5/14/92
FIELD ID. MW-12
METHOD
ANALYTE uq/1 pql
Phenol 380J 1000
Naphthalene 470 50
ma/1 pql
Total Lead 0.098 0.04
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pql = practical quantitation limit due to matrix effects.
bdl = below method detection limit.
bql = below quantitation limit.
J = Estimated Concentration
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

GeoChem, Incorporated
Environmental Laboratories.
Geochem(NC #336/SC #99008)
Project#9205-064 4 Site Name Spruce Pine
LAB ID. 2334
DATE SAMPLED 5/14/92
FIELD ID. MW-12
METHOD
ANALYTE
ug/1 pql
IPA 601
Dichlorodifluoromethane BQL 2.5
Chloromethane BQL
Vinyl chloride BQL
Bromomethane BQL
Chloroethane BQL
Methylene chloride BQL
Trichlorofluoromethane BQL
trans-1,2Dichloroethene BQL
1,1-Dichloroethane BQL
Chloroform BQL
1,1,1-Trichloroethane BQL
Carbon tetrachloride BQL
1,2-Dichloroethane BQL
Trichloroethene BQL
1,1-Dichloroethene BQL
1,2-Dichloropropane BQL
Bromodichloromethane BQL
transl,3Dichloropropene BQL
cis-1,3-Dichloropropene BQL
1,1,2-Trichloroethane BQL
Tetrachloroethene BQL
Dibromochloromethane BQL
Chlorobenzene BQL
Bromoform BQL
1,1,2,2TetrachloroethaneBQL
1,3-Dichlorobenzene BQL
1,2-Dichlorobenzene BQL
1,4-Dichlorobenzene BQL
soil water
parts per million = mg/kg mg/1
parts per billion = ug/kg ug/1
pql = practical quantization limit due to matrix effects.,
bdl = below method detection limit.
bql = below quantization limit.
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

GeoChem, Incorporated
Environmental Laboratories
QUALITY CONTROL RESULTS
METHOD RECOVERY METHOD
DETECTION LIMIT
602
Benzene 113 %
Toluene 111 %
Ethylbenzene 110 %
Xylenes 114 %
MTBE 108 %
EDB 131 %
IPE 110 %
601
Trichloroethene 101 %
Tetrachloroethene 100 %
Chlorobenzene 94 %
Phenol 61 %
Naphthalene 67 %
Total Lead 109 %
0.5 ppb
1.0 ppb
0.5 ppb
10 ppb
1.0 ppb
0.04 ppm
REVIEWED BY
2500 Gate Way Centre Blvd., Suite 300 • Morrisville, NC 27560
Telephone: [phone] • FAX: [phone]

CERTIFICATE OF ANALYSIS
Service Location
HERITAGE LABORATORIES, INC.
4132 POMPANO ST.
CHARLOTTE, NC 28216
[phone]
Recei ved
02-SEP-93
Project
Lab ID
B122398
Compl ete
23-SEP-93
PO Number
113028
Printed
27-SEP-93
Sampl ed
01-SEP-93 14:20
Report To
MIKE FIORI
NATIONAL ENVIRONMENTAL TECHNOLOGIES
9400-E SOUTHERN PINE BLVD.
CHARLOTTE, NC 28273
Bill To
ACCOUNTS PAYABLE
NATIONAL ENVIRONMENTAL TECHNOLOGIES
9400-E SOUTHERN PINE BLVD
CHARLOTTE, NC 28273
Sample Description
PROJECT: SPRUCE PINE
SAMPLE ID: RW-2
SAMPLE DESCRIPTION: DEVELOPED GW: RW-2
HARDNESS EDTA TITRIMETRTC EPA 130.2
Analyst: .WILLIAMSJ,Analysis:0ate: 09 SEP-93
Parameter
HARDNESS
26
Result
Det. Limit
1
Units
mq/L
FAAOR :ICP ACID DIGESTION OEAQUEOUS SAMPLES: SW84.6-3005A
Ana cyst:M-KRASKA Analysts'Date :09 SEP-93 :;: ?
Test P130:.4 0
Parameter
INITIAL WEIGHT OR VOLUME
50
Result
Det. Limit
mL
Units
Ana.Tyst L;: SURRATT ;Analysis Dater 10 SEP-93 Instrumen:t . FAA.•
Prep: FAR: OR ICP':ACID:DI.G:ESTION':OF AQUEOUS SAMPLES SW8.46.30Q5A P130.4.0
Parameter
IRON
Result
EST 0.20
Note: Matrix interference due to multilayer sample.
Det. Limit
0.10
Units
mg/ L
MANGANESF_:FAA SW846-7460
Analyst. L;.. <SURRATT` Analysis .:Date:. 13 SEP ;93 Instrument:. FAA
Prep_ FAA::QR ICP;;ACID DIGESTIOK;:OF AQUEOUS SAMPLES :SW846-3005A P130 ::4..0
Parameter
MANGANESE
Result
EST 1.6
Test .Mfl9..]
Det. Limit
0.02
Units
mq/ L
Noet: Matrix interference due to multilayer sample.
PURGEABLE :AROMATICS. BY GC%PID ELCQ• ;(BTEX) •EPA 602 ::..
Analyst R -WINTERS':: Analysis:Date :OZ SEP-93 : Instrument:::. GC/PIDELCD
Parameter
BENZENE
ETHYL :BENZENE::
TOLUENE
M/P±XYLENE
0-XYLENE
Result
4600
:3400.
................
3900
4200
Test . 0458.
..10
Det. Limit
1000
I00:0::
•
1000
1000
Units
u9/L.
ug/L
uq/ L
Page 1 (continued on
next page)

HERITAGE LABORATORIES, INC.
Lab Sample ID: 8122398
Note: Sample diluted 1:1000.
SEMI VOLATILE'EXTRACTION ;(NEUTRAL%BASE/ACID
Analyst M;.PIWOWAR analysis Date:
Parameter
INITIAL WEIGHT OR VOLUME
Result
Test: P243 1.0
Det. Limit
990
FINAL::VOLUME
Note: Upon concentration, 2 phases formed. The extract could not be concentrated
below 4.0 m1s. Both phases were mixed and analyzed.
SEMI -VOLATILE PRIORITY POLLUTANTS.{BASE%NEUTRAL ACID)EPA 625'
Analyst. MPIWOWAR Analysis:Date;`22 SEP=93 Instrument .;GC%MS SVOR4'
Prep SEMI -.VOLATILE EXTRACTION tNEUTRAt/BASE/ACIQ FRACTIONS) EPA:625 P243.I 0'
Parameter
:2,.4.,6-TRI.CHLOROPHENOL
LQR0::3 :METHYLPH.ENOL
2-CHLOROPHENOL
2,4-DIMETHYLPHENOL
2 NITRO:RHENOL..;:.:.:::::.:
4-NITROPHENOL
2;:4:-DINITROPHENOL`:'::::::::'::.
4,6-DINITRO-2-METHYLPHENOL
PENTACHLOROPHENOL
PHENOL
ACENAPHTHENE:Y
BENZIDINE
RI CHLOROBENZENE.:.
HEXACHLOROBENZENE
HEXACHLOROE N .::::::::
BIS (2-CHLOROETHYL) ETHER
- CHLORONAPHTHALEN E: .
1,2-DICHLOROBENZENE
:.:13.-DICHLOROBENZENE:.;:.:.:::::
1, 4-D ICHLOROBENZENE .......................
: 3,3' .. DLCHLOROB:ENZIDINE:::
2,4-DINITROTOLUENE
FLUORANTHENE
4:=£HLOROPHENYLPHENY:LETH
4-BROMOPHENYLPHENYLETHER
:. B1S`(2`=..CHLORO.ISO:PROPYt) ETHER`.
BIS(2-CHLOROETHOXY)METHANE
: HEXACHLOROBUTAOI:ENE`
HEXACHLOROCYCLOPENTADIENE
:: ISO.PHORONE::::
NAPHTHALENE ..
NITROBENZENE:':
N-NITROSO-DIMETHYLAMINE
.N-:NITR0SO D;IPROPYLAMINE':::.::;
N.-N.ITROSO-DIPHENYLAMINE
::BIS (_2::. ETHYLHEXY:L}:PHTHALATE
"BENZYLBUTYLPHTHALATE
D:I==.N=:BUTY L P.HTHA LAT E<;;<:;::::::.:
DI-N-OCTYLPHTHALATE
DI E:THYLPHTHALAATE
Result
BDL......................
:BDL....
BDL
BDL
`::BDL
BDL
BDL..............
BDL
BDC
BDL
..........................................
BDL
BDL
BDL
.BDL
BDL
:::BDL::::::
BDL
BDL
BDL';:;:.:::::::;;:
.....................
BDL
BDL.
BDL
::BDL:....
BDL
BDL
* 4600
BDL;
BDL
=BDL
BDL
BDL
BDL
DL....::.::.::.:: :.
mL
mL
- Test .::0501 3 0
Det. Limit
400
400
400
2000
200o..
2000
2000::.
400
:::::400..
800
400
400..
400:.
400
400.:
400
400
400
400
400
400
OCY
4000
:.400.:
400
400:
400
400
400
400:;
Units
Units
ug/L
ug/L
::.ug/L:::
...ug/L
ugL
ug/L
ug/L
ug/L
ug/L
Aga
ug/L
JWL
ug/L
:.ug/L:
ug/L
:ug/L
ug/ L
ug/L
. 1g/ .
ug/ L
ug/L
::ug/L
ug/L
::ug/L
ug/L
ug/L:
ug/L
ug/C
..u.9/L
"u9/L
ug/L
ug/L
Page 2 (continued on next page)

HERITAGE LABORATORIES, INC.
Lab Sample ID: B122398
Parameter
DIMETHYLPHTHALATE
' :BENZ (A.):ANTHRACENE
BENZO(A)PYRENE
;'BENZ0.(B).FLUORANTHENE
BENZO(K)FLUORANTHENE
CHR YSENE:::
ACENAPHTHYLENE
AN:THRACENE . :.....
BENZO(G,H,I)PERYLENE
FLUORENE':;::; :.;; :...
PHENANTHRENE
D I B E NZ: (A:Ht) ANTH RAC E N E
INDEN0(1,2,3—CD)PYRENE
.>.PYRENE.;:s `:;:::::;
ALDRIN
....:...........................................................
DI:E LDRI N.>:
...................................
CHLORDANE
4,4'—DDE
ALPHA—ENDOSULFAN
BETA:-ENDOSULFAN
ENDOSULFAN SULFATE
ENDRIN ALDEHYDE
HEPTACHLOR
HEPTACHLOR EPDXIDE
.::...................................................::::.:::.:
BETA—BHC
DELTA—BHCa::-:=::
GAMMA-BHC (LINDANE
SURROGATE RECOVERY
2-FLUOROPHENOL
......................
NITROBENZENE—D5
UOROBI:PHEN:Y.L
2,4,6—TRIBROMOPHENOL
TERPHENYED::::::;
Note: Dilution 1:10
* - Dilution 1:100
** - Surrogates diluted out.
Result
BDL
BOL..:..
BDL
-BDL-
BDL
BDL
BDL
:.BDL
BDL
1700
;IBDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL
BDL .._.........
BDL
ABDC:
BDL
..............
BDL
................
Det. Limit
400
. ., 400
400
.400
400
400`
400
400
400
400
400
................
**
.....................
:4-00
400
400
2000
:400::::
400
400
400
400
400s:_
400
-:400::.
400
400
= 40.0::::.
400
Units
ug/L
,ug/L
i.ug/L
ug/L
`.ug/L
ug/L
ug/L
ug/L
.ug/L
u9/L
:ug/L
ug/L
;::ug/L
u9/L
ug/L
ug/L
ug/L
u9/L
ug/L
ug/L
ug/L
ug/L
Rec
::.:
Rec
% Rec"
Rec
*
**
BDL
EST
See Note for Parameter
See Note for Parameter
Below Detection Limit
Estimated Value
Sample Comments
Sample was received in improper container.
Sample chain of custody number 19241.
This Certificate shall not be reproduced. except in full,
Page 3 (continued on next page)

HERITAGE LABORATORIES, INC. Lab Sample ID: 6122398
Sample Connects
I without the written approval of the lab.
Quality Assurance Officer: b .. ITY) ,_)c ,7)..t %
Page 4 (last page)

APPENDIX B
Calculation Sheet: Estimate of Influent Concentrations

•
V vjeer 113 v$ l
-Crf2-UCC- pf,JE
c_aAc- =sm° `t/z8
C hec( b 47/Z48,h1JM
T -€�
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A-sskl,rAr 11er�1 s:
41l-I-
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V1 1=n N
000
in 0 0
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TS
Tern
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d T v\ cAr L7 6 4-1 ow CAI o&e/i -f t
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kt
e t). i 1.2- 10 YQ co vT S Pam. PAn
C» iY i IOL Ai ( p,-A 4-ow•Q-�-i-
. 5Ve- • ( T R-r-1 L = to y rr`",
p A(- 10 r -two-A ftrt cs2)v
we,U S, s�"' �,,,„ c 4 &v c or�c Il cm eM
tr",/ oJ) 4ih 6 it S & l e
C�k\ell vArNdu -F�e ��ci- '�� v.1
gram e k G cA ?pia
To\vex-e- 3 ck 0.1 1'pt.
I l 8Q-Aze-�e. 3 i w r pb
(le X71 - ggw PPS
o - xylive, k to,
NctNnoje lne. 1-16 v ()pi.
.
`-,1\(,\,,f.(e)sekit.z.(2 (\v\c- 4-jrcHsivv.,j4cA
(k Ce,4K-b*4
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TE•
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CP-tC-1-OM CAA
E+hW1 Be4ze4te
M119 x y (ene
o- xyij€4t °e,
haff kg levte
P
!So ppb
3,1 w ppb I'-°
3,4( cU ppb .3$
13 , coo ppb 210
i1,6vil ppb Jiro fpb
38R;) ppb 380 (pb
E-4-tvtt seze
XY�ev`e
PkekiLit
,\ AAAa
5�
5.9 'iv
v1
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515 ppb
511 3 fpb
yea nob
lS erb
iczg
-ye.0 le7'b
l! �Q
Ma`k 71i/ga
515 'pi,
SI3�ybv
1100T ppV
150 ppb'
83 ppb
3So ppb"
Ib1, 6- \t\s.4 0"`7! Rtyi\
I,713a
2,LfCN
io %is .r) x2K7i) a4e,
21,

APPENDIX C
Specifications: Oil/Water Separator

v
DYNA-PAK
OIL/WATER SEPARATORS
For the Removal of Both Dispersed Oils & Settleable Solids
MASTERING THE ART OF OIL/WATER SEPARATION

HYDRO-FLO'S
Dyna-Pak oil/water
separators provide
maximum efficiency and
higher capacities in a
compact, cost effective
package.
BASIC CONCEPTS
The basic concept used by most
manufacturers. of gravity type oil water
separators is that materials of different
specific gravities will rise and settle at
predictable rates. By using the basic
formulas, as outlined in Stokes Law, we
can predict the retention time necessary to
separate oil of any specific gravity and
droplet size, from any given waste stream at
the desired flow rate. The problem is that a
separator based solely on retention time
cannot effectively separate oil particles
smaller than 150 microns, and if they could
they would be prohibitively large.
By placing certain materials in the waste
stream, the efficiencies of oil/watersepara-
tion can be greatly improved due mainly to
WITH DYNA-PAK
COALESCING
MEDIA
WITHOUT DYNA-PAK
COALESCL TG MEDIA
impingement on their surfaces. As fine oil
droplets impinge upon the plate surfaces
they coalesce, or merge, with previous drop-
lets to produce much larger droplets. There
they continue to grow in size until they are
large enough to break free and rapidly rise
to the surface where they are skimmed or
decanted. This coalescing action allows
removal of smaller droplets than is possible
with a standard gravity separator.
The effectiveness of any coalescing media
is governed by several critical variables,
shape, density, available surface area,
velocity and direction
of flow, material of
construction, and solids
handling capabilities. AtHydro-
F10 we use a proprietary Dyna-Pak
cross corrugated coalescing media.
The Dyna-Pak media was designed with
consideration of all these factors. The
specific shape and spacing of the Dyna-Pak
plates provides greater coalescing
performance than any other media available,
while also assuring maximum protection
from blinding. The Dyna-Pak media is
molded of ahighly oleophilic (oil attracting)
material which greatly enhances our oil -
water separation capabilities.
OPERATION
INFLUENT DIFFUSION
CHAMBER:
Flow enters the inlet chamber where it is
evenly dispersed through a non -clog dif-
fuser across the width and depth of the
Dyna-Pak. Large solids fall out of suspen-
sion here before entering the separation
chamber.
SEPARATION CHAMBER:
The separation chamber is filled with the
Dyna-Pak coalescing media. The pack cre-
ates a uniform cross -sectional resistance
which further helps disperse the flow
throughout the separation chamber. The
sinuosidial flow of wastewater through the
pack serves to promote intimate contact
between the oil droplets and the plate sur-
faces. The coalesced oil has the least re- _
stricted path to exit the waste stream, and
slides to the top of the pack on the surfaces
of the
plates. Solids
entering the pack
encounter a 60 degree
angle of inclination which
is optimum for solids settling.
The solids slide down the plates
gathering both mass and velocity as they
near the bottom of the pack and drop into
the sludge collection chamber.
SLUDGE COLLECTION
CHAMBER:
The sludge collection chamber is located
directly beneath the Dyna-Pak and pro-
vides ample volume for the settled sludge.
The sides of the chamber are sloped at 45
degrees to insure easy and complete re-
moval of the sludge.
OIL REMOVAL:
The separated oil accumulates at the sur-
face of the separation chamber where it
displaces the water, as the oil layer in-
creases, oil automatically spills over an
adjustable oil skimming weir into an inte-
gral oil reservoir where it can either flow by
gravity or be pumped automatically to
remote storage tanks.
EFFLUENT CHAMBER:
The clean water leaving theDyna-Pakflows
under the oil reservoir and up over the ad-
justable effluent weir, which maintains the( )
liquid level throughout the separator. As
the clean water passes over the effluent
weir it enters the effluent or clean water
chamber where it can either flow by gravity
or be pumped automatically..

MIXTURE
OF OIL, 216
WATER
& SOLIDS
SMALL
DROPLETS
I`
a
c:a
LARGE
DROPLETS
OUT
VENT
1
pu.
- -
ti;
SOLIDS
OIL
* Shown with
optional oil
reservior
MAJOR SECTION
MATERIALS OF
CONSTRUCTION:
Standard materials of construction include,
but are not limited to, carbon steel, stainless
steel, PVC, neoprene, schedule 40 pipe,
150#ANSI flanges, and grade 5 stainless
steel fasteners, all water tight weld joints
are double welded and tested either hydro-
statically, magnafluxed, dye -penetrant or
other NDE methods in accordance with
current military specifications.
COATINGS:
Above grade carbon steel tanks have an
exterior surface that is prepared to a SSPC-
SP6, commercial blast, and given one (1)
coat of self priming epoxy paint (6DMT).
All steet tanks have an interior surface that
is prepared to a SSPC-SP10, near white
metal blast, and given two (2) coats of coal
tar epoxy (16 DMT). As a standard on all
buried equipment, Hydro -Flo will supply
dielectric insulators and anodes to insure
state-of-the-art corrosion protection for
years of trouble free operation.
AVAILABLE OPTIONS:
❑ Flow control packages
❑ Influent pump package
"...Overall effluent oil
content has been
reported
q CLEAN to be up to 60% lower
WATER for parallel plate
systems, with a higher
proportion
of small oil droplets
recovered"
❑ Sludge pump out package
❑ Recovered oil pump out package
❑ Effluent oil content monitor
❑ Heater package for freeze protection
❑ Hazardous environment upgrades
available
❑ All stainless steel construction
❑ Elevated temperature protection (For
applications over 140 Degrees F.)
❑ Special coating systems for severe
interior/exterior environments
❑ Sludge auger package
❑ Oil drag skimmer package
❑ Chemical pre and post treatment for
complex emulsions.
FEATURES:
❑ Sizes from 2 GPM to 3000 GPM
❑ SIudge collection chamber -keep media
maintenance free
❑ Compact design -takes up less space than
competitive units
❑ Best possible oil removal without
chemical treatment
❑ Fast and easy installation
❑ Fast delivery
❑ High quality -we can compare every
aspect of our equipment against any of
the competition
Design & Operation of
Oil -Water Separators
API Publication 421, Feb. 1990
Note: Any reference to
the API is not meant as an
endorsement by the
American Petroleum Institute.
❑ Removes both dispersed oil (down to 10
PPM@ 20 microns) and settleable solids
❑ Custom designs for specialized
applications -no matter what your
requirements are, Hydro -Flo is your best
choice for oily waste solutions
APPLICATIONS:
❑ Automotive Maintenance Facilities
❑ Airports
❑ Bus terminals
❑ Bulk plants
❑ Chemical plants
❑ Cosmetic industry
❑ Electro chemical plants
❑ Fabricated metal plants
❑ Glass factories
❑ Grinding and honing operations
❑ Lens grinding and polishing
❑ Military bases
❑ Oil fields & Refineries
❑ Petroleum plants
❑ Pulp and paper mills
❑ Railroad yards
❑ Rolling mil quench oil
❑ Steam cleaning facilities
❑ Textile mills
❑ Tramp oil separation
❑ Truck maintenance terminals
❑ Utility companies
❑ Wire drawing operation
❑ Wash racks

Mastering the Art of Oil/Water separation
.d
DP-24/STL/#1 15/O design info
Designed flow rate = 15 GPM 2 20 microns to 34 GPM 2 30 microns
Specific Gravity of the wastewaters aqueous phase = 1.0
Specific gravity of the oil phase = 5 20 to 30 microns
Oil droplet removal rate = 10 mg/1 of oil dreiplet.a
Media pack size to be 24"W x 36"D }: 40"L
Minimum projected aurFace arr,a = 360 square' feet
Minimum coalescing surface area = 72:) square -Feat
Maximum cross sectional velocity = .33 to .76 feet/min
Minimum Separation chamber retention time = 29 to 10 ruin
Minimum sludge chamber capacity = 56 gallons
device for oil removal = Integral oil reservoir with adjustable oil
skimming weir
DP.-24/STL/#21/0 design info
Designed flow rate = 21 GPM 20 microns to 47 GPM a 30 microns
Specific gravity of the wastewaters aqueous phase = 1.0
Specific gravity of the oil phase = .6b
Oil droplet removal rate = 10 mg/1 of oil droplets > 20 to 30 microns
Media pack size to be 24"W x 36"D x 40"L
Minimum projected surface area = 504 square feet
Minimum coalescing surface area = 100G square feet
Maximum cross sectional velocity = .47 to 1.05 feet/min
Minimum separation chamber retention time = 15 to 7.4G ruin
Minimum sludge chamber capacity = 56 gallons
device for oil removal = Integral oil reservoir with adjustable oil
skimming weir
DP-24/STL/#34/0 design info
Designed flow rate = 34 GPM a 20 microns to 77 GPM a 30 microns
Specific gravity of the wastewaters aqueous phase = 1.0
Specific gravity of the oil phase = . f35
Oil droplet removal rate = 10 mg/1 of oil droplets > 20 to 30 micro s
Media pack size to be 24"W x 36"D x 4£3"L
Minimum projected surface area = 816 square feet
Minimum coalescing surface area =163 J s32 square feet
feet/min
n
Maximum cross sectional velocity=e e'
Minimum separation chamber retention time = 10 to 7.40 min
Minimum sludge chamber capacity = 56 gallons
device for oil removal = Integral oil reservoir with adjustable oil
skimming weir
"DP" SERIES CQALESCING TYPE
Cross Corrugated Plate Oil/Water Separators
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Page #f1
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APPENDIX D
Specifications: Air Stripper

Turbulent frothing
maximizes volatilization
and scours the aeration tray.
Contaminated
water inlet.
Treated water falls
into holding tank.
Air is vented to the
atmosphere or to vapor
phase treatment of choice.
Water travels around
the full length of the
baffled tray, becoming
progressively cleaner.
This illustration is representative of the ShallowTray' Model 2611.
'/16" holes resist
fouling.
Fan blows air up
through hundreds of
holes into the water.
Protected under U.S. Patent No. 5,045,215. Other U.S. and International Patents Pending.
Photo on front cover top view of 2300 Series aeration tray in action.
Photo on back coven cross section of a ShallowTray in action (full scale).
ShallowTrav is a trademark of North East Environmental Products, Inc.
1992 North East Environmental Products, Inc.
Our policy is one of continual improvement and we reserve the
right to alter any detail of our products at any time without notice.
Printed on recycled paper
#3 September

Low Profile
he discreet size of a ShallowTray' air stripper does
not advertise a contamination site. It is easily
accessed for maintenance and can be installed inside
a building. The system is also ideal as a trailer -
mounted, portable stripper for pump tests, pilot
studies, short-term cleanup, or emergency response.
There is no tower.
Treatment
The ShallowTray process
uses forced draft,
countercurrent air stripping
through baffled aeration
trays to remove volatile
organic compounds
from water.
Contaminated water is
sprayed into the inlet
chamber through a coarse
mist spray nozzle. The
ater flows over a flow
distribution weir and along
the baffled aeration tray.
Air, blown up through
3/16" diameter holes in the
aeration tray, forms a froth
of bubbles generating a
large mass transfer surface
area where the contaminants are volatilized. The
necessary contact or residence time to reach
required volatilization is achieved through model
size, addition of trays, and flow rate selection.
Resistant to Fouling
ShallowTray systems are resistant to fouling
problems. Treatment trays have large 3/6" diameter
aeration holes. In addition, the turbulent action of
the froth scours the surfaces of the tray reducing
build-up of oxidized iron.
If, under extreme conditions, oxidized iron
accumulates or hardness begins to scale up, trays can
The air forms a froth of bubbles approximately
6 inches deep on the aeration tray, generating a
Large mass transfer surface area where the
contaminants are volatilized.
Air is blown up through hundreds of 3/16" diameter
holes in the aeration tray.
be easily cleaned through ports using a washing
wand and pressure washer. Trays can also be easily
removed for a thorough inspection and cleaning.
Full Range Turndown
Not only are ShallowTray systems forgiving of
"surprise" inorganics in the water, they also allow
operation anywhere within the rated flow range. In
fact, as the flow rate is
reduced, performance
increases. Also, as demands
change (stricter effluent
contaminant levels) so can
the ShallowTray system. Its
modular design allows for
the addition of trays which
increase the percent removal
of contaminants.
No Disposal
ShallowTray systems have
no packing or diffusers to
contend with and no costs
associated with GAC
breakthrough, fouling or
disposal and replacement.
System Size
To determine the system
size required for your site, first identify the flow
rate. This guides you to the ShallowTray Series
needed. As an example, with a flow rate of 30gpm,
select the 2600 Series, which is rated for flows from
1 to 50gpm.
Next, identify the contaminants present and the
removal requirement. Generally, this determines the
number of trays required. However, the graphs in
this brochure should be used as a guideline only.
For a proposal, send us or your representative the
specifications. Request for Quotation'sheets are
available.
4

flaw #
Models ratetrays
dtlr lengttr height 'dim
Ibs
min. approx.
2611
1-50gpm
1
4'
6'2"
5'3"
600
935
2621
1-50gpm
2
4
6'2"
6'3"
600
1050
2631
1-50gpm
3
4'
6'2"
7'3"
600
1165
2641
1-50gpm
4
4'
6'2"
8'3"
600
1280
t(tow prcri e air strippers
L
2600 AERATION TRAY
TOP VIEW
Percent Remova
Percent Removal vs. Flow Rate
'.MTBE
30-
100
99.9-r
99.8-
99
Four Trays
TCE
---------
Benzene -
4
aa —
93-
90
MTBE
60-
a
Three Trays
100—•
99.6-•
99.3-
n
93-
so
60-
30-
a
TCE
Benzene
MTBE
Two Trays
100—.
99.9^
99.3-
99
98-
93-
90
60-
30-
0
•st
••••••
•••
%ow%
•••••••
Benzene
..,.....M..,11,••••••••••••••••••••••••••••••••...•••••••••••••••••••••••••••••
MTBE
one Tray
'a A. o 40100
Percent of Rated GPM
GPM.° to 2.11 30
The graphs represent approximate removal efficiencies. Use the
ShallowTrayTm modeling program to calculate expected performance.

SEP-29-93 WED 07:28 P,01
September 29, 1993
Sanjay Patwardhan
National Environmental Tech.
9400 E. Southern Pine Blvd. RE: Proposal #1092711-2
Charlotte, NC 28206 Site I.D. Spruce Pine
Dear Sanjay,
As we discussed, the following is the revised proposal for a two -tray Model 2621 ShallowTraye
low profile air stripper.
understand that the treatment flo rate is 50 gpm and the water temperature is 65°F.
ShallowTray systems are more tol rant of inorganics than other types of aeration equipment,
however, high concentrations can ause operational difficulties if proper precautions are not taken.
To assist in your remediation planning we offer, free of charge, a water analysis to test for the
presence of iron, hardness, and manganese. Please contact us if this is of interest to you.
Expected performance of the Model 2621 ShallowTray air stripper operating at 50 gpm (normal
operating range is 1-90 gpm) and 65°F follows:
Contaminant
Benzene
Toluene
Ethyl Benzene
p-Xylene
Naphthalene
Untreated After 1st After 2nd
ppb Tray ppb Tray ppb
595 60 6
543 61 7
408 38 4
1,561 139 13
883 883 883
The price for the ShallowTray t►odel 2621, and optional components, Is listed below:
Basic System Model 2621
Sump tank & 1 tray, 304L stainle s steel
1 Additional tray(s), 304L stainle s steel
Blower, 2 tray, 3 hp, 600 cfm @ l Owc, 3 phase, 230V, EXP
Inlet screen and damper, 304L stainless steel demister, air pressure gauge, spray nozzle, sight
tube, gaskets, stainless steel latches, Schedule 80 PVC piping, tray cleanout parts, steel frame.
Basic System Price $1 4 ,1 5 7
The power requirements as s cifled are 230V, 3 phase, 4 wire and ground. If site
requirements differ, please co r tact our office.
North East Environmental Products 1711echnoloav Drive West Lebanon NH 03784 [phone] Fax [phone] zs

SEP-29-93 WED 07:28
P. 02
Options
Oil / Water separator
Oil / Water separator options (a
'Feed pump
Discharge pump
Additional blower
Blower start/stop panel
NEMA 3R main disconnect switch
Standard NEMA 3R control panel
light, UL Listed (for remote mount)
Standard NEMA 3R control pane
motor starter, panel light, UL Listed
NEMA 3R, 4, .4X, PurgePanelm
alarm light, purged panel compon:
Control panel IS components
Intermittent operation
Strobe alarm light
Alarm horn
Low air pressure alarm switch
High water level alarm switch
Discharge pump level switch
Water pressure gauges
Digital water flow indicator & to
Air flow meter
Temperature gauges
Line sampling ports
Air blower silencer
Washer wand
Auto dialer
Other
0 $ 0
arm & hi -level switches, frame) 0 $ 0
0 $ o
0 $ 0
0 $ 0
0 $ 0
0 $ 0
with alarm interlocks, motor starter, panel 0 $ 0'
with pump level controls, alarm interlocks, 0 $ 0
(for remote mount)
with alarm interlocks, motor starter(s), 0 $ 0
nts
1 $ 0
0 $ 0
0 $ 0
0 $ 0
1 $171
1 $ 7 0
1 $ 7 0
0 $ 0
alizer 0 $ 0
0 $ 0
0 $ 0
0 $ 0
0 $ 0
0 $ 0
0 $ 0
0 $ 0
Options Cost
$ 31 1
Price With Options
$14,468
See attached drawing for dimensions.
All systems are shipped pre -assembled and factory tested. Normal shipment is
approximately 4 weeks from receipt of order. Purchase terms are 30% with the order, 70% net 30
days from delivery. Prices are vapid for 90 days only. I look forward to working with- you on this
project. Once again, thank you foli your interest in our products.
Sj erely,
•
File: Nat'l Env. Tech.
Christine Greene
Customer Service

SEP-29-93 WED 07:28
P. 03
Shal
low profile air strippers
System Performance Esti ate
Client & Proposal Information:
Sanjay Patwardhan
National Env. Tech.
Contaminant
Benzene
Ethyl Benzene
Naphthalene
p-Xylene
Toluene
Untreated M
Influent
595 ppb
408 ppb
883 ppb
1561 ppb
543 ppb
del 2611
ffluent
Water
Air(lbs/hr)
% removal
60 ppb
10.013381
89.9817%
38 ppb
0.009254
90.8030%
Mode! 2621
Effluent
Water
Air(Ibs/hr)
removal
6 ppb
0.014731
98.99631''9
4 ppb
0.010104
99.1542%
883 ppb 883 ppb
<.000001 <.000001
0.0000% 0.0000%
139 ppb
0.035568
91.1467%
61 ppb
0.012055
88.9055%
13 ppb
0.038717
99.2162%
7 ppb
0.013406
98.7691 %
Model chosen:
Water Flow Rate:
Air Flow Rate:
Water Temp:
Air temp:
A/W Ratio:
Safety Factor
Model 2631
Effluent
Water
Air(ibs/hr)
removal
1 ppb
0.014857
99.8995%
1 ppb
0.010179
99.9222%
883 ppb
<.000001
0.0000%
2 ppb
0.038992
99.9306%
1 ppb
0.013556
99.8634%
2600
50.0 gpm
600 cfm
65.0 F
65.0 F
89.8 cu. ft/ cu. ft
None
Model 2641
Effluent
Water
Air(lbs/hr)
% removal
<1 ppb
0.014880
99.989A%
<1 ppb
0.010204
99.9928%
883 ppb
<.000001
0.0000%
<1 ppb
0.039040
99.9939%
<1 ppb
0.013579
99.9848%
This report has been generated by ShallowTray Modeler software version 1.4,0. This software is designed to assist a skilled oprtor
in predicting the performance of a ShallowTray air stripping system. The software will accurately predict the system performance
when both the equipment and the software are operated according to the written documentation and standard operation.
North East Environmental Products, Inc, cannot be responsible for Incidental or consequential damages resulting from the improper
operation of either the softwxnb ur the air stripping ipmenr. Report generated: 9/2d/93
O Copyright 1992 North East Environment Products, Inc. - 17 Technology Drive, West Lebanon, NH 03784
Voice: 603-298-7061 FAX: [phone] - II Rights Reserved.

S 29-93 WED 07:29
P.04
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Appendix E
Specifications: Activated Carbon Unit

OCT 05 ' 93 11: 05 C. E. S. U. 443 899 6534
TO: 704 529 5298 P02
Continental Environmental Services
Your Partner for a Clan Environment
National Environmental
Sanjay Patwardhan
FLOW RATE 50
CONTAMINANT
CARBON USE RATES
MID -ATLANTIC OFFICE
TEL: [phone]
FAX: [phone]
CONCENTRATION(PPB) CARBON USF.(LBS/DAY)
BENZENE 6 8.572115E-02
TOLUENE 7 .0437535
ETHYL BENZENE 4 1.920154E-02
XYLENE 13 4.785659E-02
NAPTI1ALENE 883 1.766141
PHENANTHRENE 170 .3026948
PHENOL 380 10.85801
BIS 2 ETHYLHEXYL PHTHALATE 2400 .1274438
TOTAL CONTAMINANT(P p B)
TOTAL CONTAMINANT(LBS/DAY)
PERCENT LOADING BY WEIGHT
LBS OF CARBON/1000 GALLONS
3863
2.317986
17.49314
.1840392
TOTAL CARBON USE(LBS/DAY) 13.25082
THE RESULTS GIVEN ARE BASED UPON HENRY'S LAW OF LINEAR ADSORPTION ISOTHERMS AND
CONTINENTAL APPLICATION LABS' DATA AND ASSUME REASONABLE FLOW RATES AND CONTACT
TIMES. NON REPORTED DATA SUCH AS VERY HIGH OR LOW INLET CONCENTRATIONS, PH, OR
COMPETING ORGANIC MAY DRASTICALLY AFFECT ACTUAL OPERATING CONDITIONS.

SPECIFICATIONS
6/01 /91
Model: 200RC1 L, 20 GPM Drum Adsorption system, disposable
cartridge prefiltratlon, liquid phase drum In single stage
Particle Filters: Two - Filter Housings
Filtration Media: 30-micron pleated polypropylene cartridge
Carbon Filters: Two - CDL200 Steel Drums, DOT 17-C
Activated Carbon: 8 x 30 mesh iodine number 950
7.1 cubic feet (200 Ibs) per vessel
Contact Time: 5.3 minutes c 20 GPM
Hydraulic Loading Rate: 3.1 GPM/Sq. Ft. G 20 GPM
Maximum Pressure: 10 PSI
Installation Area: 5' x 7'

- .. e.�•.......
otomao
COtT1r1Et4r4L EI'IVIROI'IMENI'64L SEnvlcEs
Premium - grade GAC is Drums & Systems for
Especially Suited for
Pesticides & Petroleum Carbon Adsorption
HydroCarbons
Pesticides, petroleum products, and
solvents require a higher grade of
carbon for effective adsorption of
VOC molecules. CES liquid phase
GAC is graded with a minimum
iodine number of 950.
The iodine number represents the
number of pores in the carbon
granule that are available for
adsorption. The greater the iodine
number, the greater the carbon's
capacity for adsorption.
Using carbon with more capacity
improves the effectiveness and
economics for the remediation and
control of pesticides and petroleum
hydrocarbons.
-M
Photo above, shows CES' 7,000- and 500-pound jumbo
drums behind CES' 200-pound drum and 50-pound mini
drum. Drawing, left, is of CES' High Pressure steel tank.
Applications & Recommended System Types
MODEL NUMBERS
GENERAL
APPLICATIONS
Filtration of water during
sampling & well purging
U
c
U U
a
Pump 'testing
•
•
DewaterinR
• •
•
Tank Cleaning
• •
Pump & Treat
'Polishing effluent
of Diffused Aerator
. •
Polishing liquid effluent
of Alr Stripper
•
• •
Removal of vapor.
•
DESCRIPTION _
of Model Numbers
1 2.1 4
1= 1rt.olyp.
MD mini drum
DR= 200-I1, drum
I IP- 1ligh Pressure tank
ID= Jumbo drum
1= ►refihratlon type
t7, Nn prrfillralinn
1- Rackwashing
Assembly
C= Disrosible Cartridges
3. • of carbon bank•
4- Vapor or liquid phase
SPECIFICATIONS FOR VESSEL SIZE
ANr1 TYPF nN RANK

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