NCG510280_Regional Office Historical File Pre 2018 (2)

t^f North Carolina
Department of Environment,
Health and Natural Resources
Jame B. Hunt, Jr.; Governor
Jonathan B. Hewes, Secretary
A. Preston Howard, Jr., P.E..,_Director
Mr. Willo Smith
The Southland Corporation
1304 Lee Road
Orlando, Florida 32810
t
low
August 25, 1995 & NATURAL n1�';()'sn
SEA
Subject: General Permit NCG510000
Cert. of Coverage rah C 51 2 0
Former 7-Eleven Mare No. 11769
Mecklenburg County
Dear Mr. Smith:
In accordance with your application for an NPDES discharge permit received July 17, 1995 by the
Division, we are herewith forwarding the subject Certificate of Coverage under the State-NPD S general
permit for the construction and operation of a 0.0 144 MGD groundwater remediation system consisting of.
three dual extraction wells, a 10 gpm oil/water separator; a 3/4 hp centrifugal transfer pump; a packed -
tower air. stripper with a 449 scfm blower; two (2) 200 pound activated carbon units in series; 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 Little Sugar 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 a
subsequently amended.
f 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 H, E. . 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 111, Paragraph 2 of NPDES
Permit No. NCG5 10000, and 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) 63-16 9, shall be notified at least
forty-eight (4 hours in advance of operation of the installed facilities so that an in -place inspection can be
ode. Such notification to the regional supervisor shall be made during the normal office hours from :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 919-7-9 1
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% past -consumer paper

P it'Mumber NCG510280
Former 7-Eleven Stare No. 11769
August 2, 19
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 'Iplans 'and specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Bo
29535, Raleigh, NC 2762-(1535.
copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
The Operational Agreement between the Permittee and the Environmental Management
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 with
North Carolina General Statute 143-215.6A to 143- 15.EC.
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
y Federal or focal tither governmental permit that may be required.
If you have any questions or need additional information, please contact Greg Nizich, telephone
nu ber 1 /733-5083, extension 541.
Sincerely,
ri8irl i Signed
David A. odric.
A. Preston Howard, Jr., P.E.
cc:
Training and Certification Unit
Facilities Assessment Unit
r. Steve Graf, Universal EngineerinSciences (wdesi n package).
Central Files
NPI:ES Permits File

IN
rD NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEME
GENERAL PERMIT NO. NCG510000
!CERTIFICATE C;F E ENO. 51
TO DISCHARGE PETROLEUM CONTAMINATED I WA R AND SIN41LIAR WASTEWATERS
UNDER THE
NATI AI.1 P L TANT UI R E ELIMINATI I' TEM
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,
The Southland Corporation
is hereby authorized to construct and operate a groundwater treatment system consisting of an oil/water separator, air
stripper, ;and activated carbon filtration for petroleum contaminated groundwater with the discharge of treated
wastewater from a facility located at
Former 7-Eleven Store No, 11769
Mecklenburg County
to receiving waters designated as Little Sugar Creek in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and otherconditions set forth in Parts I, II, III
and IV of General Permit 3`r'o. NCG51(}000 as attached.
This certificate of coverage shall become effective August 25, 1995
This Certificate of Coverage shalt remain in effect for the duration of the General Permit:
Signed this day August 25, 1995
ri&11 Signed
David A. rig
A. Preston Howard, Jr,, P,E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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SOC PRIORITY PROJECT: No
To:
Permits and Engineering Unit
Water Quality Section
Attention: Greg Nick
Date: August 9, 1995
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Mecklenburg
NPDES'Permit No.: N(-"G 5 10 '2 8 0
MRCS No.: 95-114
PART
I - GENERAL INFORMATION
1.
Facility and Address: 7-Eleven Store No. 11769
GW Remediation
The Southland Corporation
1304 Lee Road
Orlando, Florida 32810
2.
Date of Investigation; August 4, 1995
3.
Report Prepared By: Michael L. Parker, Environ. Engr. II
4.
Person Contacted and Telephone Number: Willo Smith, (407)
295-0979.
5.
Directions to Site: The street address for the subject
facility is 1339 Sharon Road West, Charlotte, N.C,
6.
Discharge Point (s), List for all discharge Points: -
Latitude: 35* 07' 09tv
Longitude: 80* 52' 18"
Attach a USGS Map Extract and indicate treatment plant site
and discharge point on map.
USGS Quad No : G 15 SW
7.
Site size and expansion area consistent with application:
Yes.
8.
Topography (relationship to flood plain included):
Relatively flat, 0-2% slopes. The site is not located in a
flood plain.
9.
Location of Nearest Dwelling: Approx. 5-00+- feet from the
WWTP site.

Page Two
10. Receiving Stream or Affected Surface Waters: Little Sugar
Creek
a. Classification: C
b. River Basin and Subbasin Nc•w< Catawba 030834
c, Describe receiving stream features and pertinent
downstream uses: The proposed discharge will enter
CMUD's storm sewer collection system. There are no
known downstream users and/or water intakes below the
point where the storm sewer empties into the receiving
stream.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater: 0.00576 MGD (Design Capacity)
b. What is the current permitted capacity: N/A
C. Actual treatment capacity of current facility (current
design capacity); N/A
d. Date(s) and construction activities allowed by previous
ATCs issued in the previous two years: TO
e. Description of existing or substantially constructed
WWT facilities: There are no existing WET facilities.
f, Description of proposed WWT facilities: The applicant
proposes to construct an oil/water separator followed
by an air stripper and activated carbon absorption.
0 Possible toxic impacts to surface waters: GW
remediation effluents have been shown to exhibit toxic
characteristics. Consideration should be given to
incorporating toxicity testing/limits in the Permit.
h. Pretreatment Program (POTWs only): Not Needed.
2. Residual handling and utilization/disposal scheme:
Residuals generation is not expected.
3Treatment Plant Classification: Less than 5 points; no
rating (include rating sheet). Class 1
4. SIC MCC: 9999
Wastewater COCO: 66
5. MTU Codels): 56000
PART U! - OTHER PERTINENT INFORMATION
11 is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
No

Page Three
2. Special monitoring or limitations (including toxicity)
requests: None at this time;
3. Important SOCIJOC or Compliance Schedule dates: N/A
4. Alternat4,je Analysis Evaluation
a. Spray Irrigation: Insufficient area.
b. Connect to regional sewer, system. CMTJD is currently
not allowing the addition of treated. GW into their
sewer collection ;system.
C. Subsurface: Insufficient area.
PART I -- EVALUATION AND RECO14-MENDA °ION
The Southland Corporation(Sc) has applied for a Genera
Permit (GP) for the re:mediaticn of petroleum contaminated C? from
a former 7-Eleven store in 'southern Mecklenburg 'County. The
treated wastewater will travel through a section of 'MUD's
existing storm drainage system prior to ` entering Little Sugar
Creek. The site was formally occupied by a 7-Eleven store and is
now occupied by a Circle-K store as well as two (2) other retail
cutlets,
Pending a technical review and.:: approval by P E,: it is
recommended that a'CP be issued for this facility
Einature cf` _ ecrt rerer mate
Water Quality R i al per isor Date(

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State of North Carolina 1061
'Department of Environment,
Health and Natural Resources 4
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Hawes, Secretary C) E E "cD P't
A. Preston Howard, Jr., P.E., Director
' Al F"Al,
July 20, 1995
Mr. Willo Smith, Environmental Program Director
The Southland Corporation
Ottttt ,�fl1304 Lee Road �
Orlando. Florida 328 10 MOORESVILLE REGI ll t OFFICE
Subject: NPDES Permit Application
NPDES Permit ##NCC51020
Former 7-Eleven Store No. 1179
Mecklenburg County
Dear Mr. Smith:
This is to acknowledge receipt of the following documents that were received on 0 /17/95
• Notice of Intent for NCC5100000
• Engineering Proposal
Evaluation of non -discharge alternatives
e following item is necessary before final action on this lie it.
The processing fee for this permit and authorization to construct is $550. Only $450 was received with
the application, Please submit an additional $100 fee. Refer: to the permit number listed above when
submitting the check.
I am, by copy of this letter, requesting that the Mooresville Regional Office Supervisor prepare a staff
report and recommendations regarding this discharge. If you have any questions regarding this
application, please contact Mr. Greg Ni ich at 919-733-50 3, extension 541.
Sincerely,
David Goodrich, Supervisor
NPI ES Pert -its Croup
c:
U nive"an*gtneertng h cte ace , Inc,
Permit File
P.O. Box 29535, Raleigh, North Carolina 6 -9638 Telephone [phone] FAX [phone]
An Equal, Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
12 Now Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor A. Preston Toward, Jr., P.E.
William W. Cobey. Jr., secretary Acting Director
N_Dj10E_QF INTENT
C. Location. (Attach map delineating general t cataty tocanon)
(i)Street Address; 1339 Sharon Road West
(2)City; Charlotte
(3)State; North Carolina,
(4)County; Mecklenburg
I . Telephone Number, 407 )
. Facility Contact:
A. Name; Mr. Wi llb Smith
B. Title; Environmental Pro ram 1)i rector
C. Company Name; The Southland r i `n
D. Phone Number; 4©7) 95- 0979
. Application type (check appropriateselection):
A. New or Proposed; X
B. fisting, -If previously permitted, provide permit number
and issm date
C. Modification,
(Deso,cribe the nature of the modificatioO
4. Description of discharge
A. Please state the number of separate discharge points.
1 AN2,[ 1; 3,[ 1; 4,11;
Page I

B. Please describe the amount of wastewater being discharged per each separate discharge point:
1 gallains per day (gpd) 2.-- (gpd) 3.— (gpd) 4*_ (gpd)
C. Check the duration and frequency of the discharge, per each separate discharge point:
1. Continuous:—)L
2- Intermittent(pleasedescribe)-
3. Seasonal (check month(s) the discharge occurs): January 1; February 11; March April
May [ ];June [ 1; July 11; August 11; Septen-6a I ];October( November 11; December I I.
4. How many days per week is there a discharge?(check the days the discharge occurs)
Monday 11, Tuesday 11, Wednesday K, Thursday 0,Friday 11, Saturday 19, Sunday
5. How much of the volume discharged is treated? (state in percent) -.LO—O%
D. Describe the type of wastewater being discharged per separate discharge point. Specify what is
being removed and products recovered. This includes a listing of any chemicals found in
detectable amounts with the maximurn observed concentration reported. The summary of
analytical results containing this maximum value should also be subn-dtted (i.e. the listing, not
the graphical scan). The most recent sample must be no older than one year previous to the date
of this application. The following volatile organic compounds should be included along with
any suspected fuel additive;
1. Benzene*;
2. Toluene*;
3. Ethylbenzene*;
4. Xylene*;
5. Lead;
6. Methyl tert-butylether (MTBE);
7. Dibromoethane (EDB);
8. 1,2-dichloroethane;
9. Isopropyl ether;
10. Naphthalene;
11. Phenol;
earn
E. Please check the
1.
01
2.
3.
4.
Activated
5.
6.
Separately, P1
etc.) each typ(
rnanufacturer`
each compoun
each unit, mal
described in d
calculations) t
Please includ(
stripper. S
7.
What are the
8.
Please state tf
9.
Please xplait
shutoff systet
10.
Is there an ao
I I ",ee
,od capable of detection levels to 1 ppo should VC U to et ese
Mi x A
ppropriate type of treatment being used to treat the groundwater;,
/Water SeparatorL —X
Air Stripper, --!—
Diffused AerationL_
:arbon Absorption;—X
Other(s
LMM,
ndix F ..' V -
Page 2

` NOTE: Construction of any wastewater treatment facilities require submission of three (3) sets of plans
and specifications along with their application. Design of treatment facilities must comply
with requirement 15A NCAC 2H .0138. If construction applies to the discharge, include the
three is of plans and specifications with the application.
5. What is the nature of the business applying for this permit.
The facility applying for this permit is currentl a convenience store.
. Name of receiving water or waters; Iassification:
(Attach a USGS topographical map with air dish gepoint(s) clearly rked) See Appendix
. Is the discharge directly to the receiving water?(Y,N) N
If notate specifically the discharge point. Mark clearly the pathway to the potential receiving
waters can the site map. (This includes tracing the pathway of the storm r to its discharge
point, if a stonn sewer is the only viable means of discharge.)
8. Please address possible non -discharge alternatives for the following options: See Append'JR H
A. Connection to a Regional Sewer Collection System,
B. Subsurface Disposal;
C. Spray Irrigation
. 1 certify that I am fa liar with the information contained in the application and that to the best of
y knowledge and belief such information is true, complete, and accurate.
Printed e of PersonS' Wil1 o Smith
Environmental Program .Director
Trde
Si 7
Si of Ap t
Date ApplicationAny person who knowingly makes any false statement, representation, or certification in any
application, record, report; plan or other document filed or required to be maintained under Article 21 or
regulations of the Environmental Management Commission implementing that Article, or who falsifies,
tampers with or knowingly renders inaccurate any recording or monitoring device or method required to
be operated or maintained under Article 21 or regulations of the Environmental Management
Co Fission implementing that Article, shall be guilty of a sdemeanor punishable by a fine not to
exceed $10,000, or by imprisonment not to exceed six months, or by both. (8 U.S.C. Section 1001 provides
a punishment by a fine of not more than $10,000 or imprisonment ent not more than 5 years, or both, for a
similar offense.)
Notice of Intent must be accompanied by a check or money carder for $400.00 made payable to the North
Carolina Department of Environment, Health, and Natural Resources. Mail three (3) copies of entire
package to:
Division of Environtnental Management
NPDES Permits Group
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Page 3

i
t
�w+r+�er+wYwWr�r�w�w�wruwwYwiwwre+e
UP
NXr RA
UNIVERSAL
ENGINEERING SCIENCE:
NationalPollutant Discharge
PERMITElimination System
1339 Sharon Road West
Charlotte, North Carolina
Prepared By:
Tniversal _. e�l e •
., Maggie :s •
Orlando, Florida 32811
•li423-0504
Consultants in: Geotechnical Engineering - Environmental Sciences - Construction Materials Testing
Offices in: Orlando - Gainesville - Fort Myers - Merritt Island - Daytona Beach - West Palm Beach

A.
Universal Engineering Sciences (UE) has decided to dispose the treated effluent into the
storm drain. The casts for this alternative will consist of $550 for permits for the first year
and $400 for any subsequent years. This option is most viable and cast -effective compared
to other options such as disposal to a sanitary sewer, subsurface disposal, or spray
irrigation.
1. Disposal to a sanitary sewer is not a feasible option since the City of Charlotte will not
allow this procedure.
2. Subsurface disposal would require the construction of an infiltration gallery of
approximately 30 by 20 feet in size. Construction of such a large infiltration gallery in the
upgradient area would cost approximately $15,000 to $20,000. Furthermore, the presence
of the low transmissive soils at this site will effect the rate of infiltration and increase the
potential of the gallery failure.
3. Spray irrigation is not a feasible option since the site is mostly paved and the surroundings
area is mostly commercially and residentially developed.

B.
TheJollowing is an engineering design proposal detailing the remediation project
[Required by 15A NCAC 2H .0105 (c)]
1. The proposed discharge will consist of treated groundwater effluent. The groundwater
the subject site is contaminated by petroleum products under EPA Methods 601 and 60
The groundwater contamination originated from gasoline storage and dispensing activiti
at the subject site. The contaminated groundwater will be treated through a combination
an oil/water separator, air -stripper, and activated carbon adsorption drums before discharg
to the storm sewer. The discharge rate to the storm sewer is expected to be approximate
5 gallons per minute (gpm) or 7,200 gallons per day (gpd). This treatment and dischar
rate Will be necessary to remediate the groundwater at the subject site in a proper and time
manner. 'I
I �- 1, FrOrWWW'"d
3. An oiVwater separator will be manifolded to the influent line to remove any as product
from the groundwater influent and prevent it from reaching the air -stripper. A Goulds (Model
XSH07: 3/4 hp) self priming centrifugal pump is chosen as the transfer pump to route the
groundwater influent from the oil/water separator to the air -stripper. The specifications of this
pump are presented in Appendix B-2.
IN Ii
4) Te
v-4 1 1 LQ VA q Q- Is 4#1 t--0 I A I It* IzJ 'It J M01YA
As shown In Appendix B-3, an air -stripper with a tower height of 23 feet, diameter of 1.17
f6ot� padking media thickness of 18 feet, air to water ratio of 300 to 1, and an air flow rate
of 401 cubic feet per minute (cfm), will reduce the expected influent concentrations to meet
the State's cleanup standards. As previously stated, the air -stripper used alone will reduce
all contaminant effluent concentrations BDL, except for MTBE effluent which will be reduced
to 17.6 ug/l. However, with the incorporation of an oil/water separator and carbon
adsorption drums, the MTBE effluent concentration should be reduced BDL.

1/2-horsepower direct drive blower (New York Blower Model 12NB), capable of producing
440 cubic feet of air into the tower at 1.5 inches of static pressure, was selected for the
groundwater treatment system. The design calculations and selected blower suing and
specifications are presented in Appendix B-4. Appendix B-5 shows the cross -sectional detail
of the air -stripper. A cleaning part shall be located in the tower sump to allow for cleaning
of the packing material on a periodic basis as needed.
An oil/water separator will be manifold to the influent line to remove any free product from
the groundwater influent and prevent it from reaching the air -stripper. A Goulds (Model
XSH07: /4 p) self priming centrifugal pump is chosen as the transfer pump to route the
groundwater influent from the oil/water separator to the air -stripper.
Two Carbtrol Model -1 (or equivalent) activated carbon adsorbtion drums will be installed
in series as a polishing unit to further treat the effluent from the airstripper before it is
discharged to the storm sewer. The specifications of these drums are presented in
Appendix B-. The carbon will be replaced as necessary if breakthrough of a drum occurs.
The Groundwater Treatment Process Diagram for the system is presented in Appendix B-7.
4. Please see Appendix B-8.
5. Please see Appendix B-9 and B-10.
. No special studies or modelling should be required to determine the impact of the
discharge.
7. The Southland Corporation has demonstrated in past situations that it has the financial
qualifications and has been in compliance with state laws, regulations, and rules for the
protection of the environment.
B-1.2

i
i
i
i
i
i
i
i

AIR -STRIPPER,
Former 7-Eleven Store No. 11769
a Sharon Road
•O
Charlotte,North Carolina
•M ydraulic Flow•,•
Air ow s
a
Air -to -Water Ratio
Tower Diameter
1 17 feet
s Media

0
� f.

AIR -STRIPPER DESIGN SUMMARY
Former7-Eleven Store No. 11789
1339 Sharon Road West
Charlotte, North Caroline
Designed Hydraulic Flaw Rate 16 gpm
Air Flow Rate
401 cfm
Air -to -Water Rath
300:1
Tower Diameter
1.17 feet
Tower Height
23 feet
Packed Column Height
18 feet
Packing Media
2-inch Diameter
Jaeger Tri-packs

'N
e,a
1a
7O 01 IIN('V It 1

—. ...a#.®...,... w, m.. .vv: aw r##tea a. �.rwwtaV✓#f TY#t## #GAi#
Performance curve. In this system example, a Size 146 will deliver 875 CFM and 2.I-SP with approximately.67 BHP.
3 SIZES, , 1C, 12
.10 BHP'
2
U.)
Cr
05 BN /a
Q, y
CC1 .0 '� BXP
4 2 P6
0 100 200 300 400 500 600 700 800
C'FM
4 SIZES 106,116,1 ,1 ,14
.20i8HP 30 .4
10 HP
LU 10 6HP
7 r
2 ' .10 MP 15 r2 ,j �
i
ticCL
"
CJ 1 Sj,
:}? 8
100 200 300 400 500 600 700 800 900 1000 1100 1200 i300 1400
CFM
DIRECT-DRIVECIS` L1750 RPM
777
Inlet Outlet X-sP "sP XISP r P IW P "SP 3"SP
P dia. area
C1Ci 4Q. ft. 41r 844f 04< t4iP GY Otl iliP 4ik+ 844 CfM OK
OW CF# 41t RNE OV SHP
5 103 43 2360 06 197 1910- 05 149 1440 04 86 940 03
6 126 342 2710 10 2350 09 247 1 08 192 1520 07
6126 <62 3190 15 362 2870 14 321 2$50 13 216 2190 11 111 1360 08
6 203 $93 2870 20 $21 2510 18 456 22$0 16 391 1930 14 249 1230 10
1 158 672 42$0 33 631 31 590 3130 30 543 3470 '28 49 2840 23,' : 313 1980 17
J 255 845 3310 34 177 3050 32 109 2780 30 638 25M 27 490 1880 22 247 970 14
8 255 l013 3910 Al 944 3100 44 $76 3440 41 903 3150 39 652 2560 33 474 1860 26
13619 ;j 8 293 1175 4010 69 1114 3800 66 1051 3590 63 984 336a 60 849 M 54 712 2430 47 335 1140 28
146 18 1 8 293 1321 4510 90 1263 4310 81 l2W 4130 84 1152 3930 81 1029 3510 75 9W 3070 68 640 2180 $4
Performance shorn is for Compact GI Fans with inlet and outlet ducts.
PAGE 6

TOP OF MIST ELIMINATOR
TOP OF PACKING
PACKECt
3° SECTION i MAGNAHELIC GAUGE
PORT
(T .)
TOP OF PACKING
INFLUENT SUPPORT PLATE
SAMPLING
PORT NIGH WATER [TAMPER
FLOAT SWITCH
SUMP
EFFLUENT SLOWER
DISCHARGE
AIR'STRIPPER DESIGN SPECIFICATIONS: NOT TO C,AL
DESIGN FLOW RATE: 10 GPM
AIR —TO -WATER RATIO: 300
AIR FLOW RATE; 401 CFM
TOWER DIAMETER. 1.17 FEET �
TOWER HEIGHT. 23 FEET I
PACKING; HEIGHT: 18 FEET 1a
PACKING MATERIAL: 2 INCH JAEGGER TRIPACKS
REMEDIAL ACTION PLAN
7—ELEVEN STORE #11 `69
1339 RHARON ROAD WEST
fn CHARLOTTE O CAROLINA
I 93 I'll
ca AIR STRIPPER CROSS—SECTION
UNRSAL
ENCINEER1140 SCIENCES DRAWN BY: EX.. DATE: T— — CNE KEO BY'
DATE.
SCALE- AS SHOWN PROJECT NO: 1 0 1- 32 --01 REPO NO: " 4 PACE NO-' APPX.--

00
BLOWER
9
A
S'
c
A
D
TO STORM DRAIN
1" INFLUENT PVC LINE
1." INFLUENT PVC LINE
MAIN POWER JUNCTION
SYSTEM CONTROL BOX
1/2" ELECTRICAL CONE?to
cv
i
b
R >
:
0
rt
s
•
t
�n
(A
o
04
r'
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)N WELL-2/MW-2)
WELL (R W- /M W-- )
VION WELL (RW- 1)
AIR/WATER SEPARATOR
EXTRACTION SYSTEM)
'NCB

p . ;
s,.

i
CAR
DEALER417
�
' GLEANERS
CIRCLE--K
RETAIL
+ItIT
IDE L.
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040
EQUIPMENT r
STORE ISLANt}
a
CONVICNCC
STORE;
i
Q 100
.. AL `.
Now oft
REMEDIAL AC 11ON PLAN
FORMER 7—ELEVEN STORE #I=11769
1339 SHARON ROAD WEST
CHARLOTTF, NORTH C; ROL,I A
UNIVERSAL AREA MAP
ENGINEERING SCIENCES DRAWN By- R.K.S. DATE. 3/23/95 CHECKEb BY:iw
DATE;
SCALE: AS SHOWN PRQJEcl No: 1 0 1- 29-01 REPORT NQ. 47824 PAGE NA. APP B-8

TAX
SERVICE EQUIPMENT COMPOUND
°)
LEANER (15,00
0 W-
CIRCLE-K
C I'p �� RETAIL
1.5" DIA, MAIN TRUNK
`t INFLUENT LINE AND +` DIA.
zlp�
q MAIN TRUNK VACUUM LINE
ASPHALT /
W- 1
MW-3 0 TANK A 2" DIA. EFFLUENT LINE
PIT
VMW-6 A
Ch' MW,2 STORM DRAIN
MW_ (SEE DETAIL C)
MW- 4 vmW`--
MW^-5 ' DIA. INFLUENT LINE
L' a Y DIA. VACUUM LINE
` RW-1 MW-1 D
4A IQ
r
_r
C
LEGEND
r r I
FORME
13
CHAP
UNIVERSAL Pi
ENGINEERING SCIENCES DRAW By.�X.SDATE: 3
SCALE: SO PROJECT
MONITORING WELL
D
VERTICAL DEFINITION MONITORING WELL
i
DUAL EXTRACTION WELL
A'
LINE OF CROSS—SECTION

12"
18'"-24"
4" SCHEDULE 40 PVC VACUUM PIPE
1.5" SCHEDULE 40 PVC
INFLUENT PIPE ECD
NOT T
12"
18"-24"
BASE COURSE
" SCHEDULE 40 PVC
EFFLUENT PIPE
NATIVE SOIL BACKFILL
COMPACTED TO MIN. 5%
MODIFIED PROCTOR, MAX,
DENSITY ASTM D-1 5
3,/4" ELECTRICAL CONDUITS
A -°A'
kLE
ASPHALT PAVEMENT
BASE COURSE
NATIVE SOIL BACKFILL
COMPACTEDTO MIN. 5
MODIFIED PROCTOR MAX.
0 DENSITY (ASTM D-1557)
3" SCHEDULE 40 PVC VACUUM PIPE 2 3,/4" ELECTRICAL CONDUITS
1.0" SCHEDULE 40 PVC 18"
GROUNDWATER INFLUENT LINE E nON — ,
NOT TO SCALE
GROUND SURFACE
7EFFLUENT
a
AIL 'C'`
NOT TO SCALE / ?
WL
ENGINEERING SCIENCES
FORIV
13
CNA
#11 69
'SST
:)^I fKf A
Y: R.K.S.

C.
Parameter Maximum Cone.
Observed
(ugA)
1. Benzene 39
;. Toluene 1.2
3. Ethylbenzene 4.2
. Xylee 22
. MTBE 9100
7.1,2 DCE 24
6. IPE 971
Notes: ug/l = micrograms per liter
copy of the laboratory analytical results are presented in Appendix C- . Groundwater
samples were analyzed by EPA Methods 504, 601, 602 and isopropyl -ether (IPE) with
detection levels to 0,5 micrograms per liter (ugn) or parts per billion (ppb)
C - 1.1

a
t MR
t
c,vgc+"+rL LABORATORIET E LABORATORY ANALYSIS
Universal Engineering Scienc March 23, 1995
12249 Nations Ford ° Road PACE Project Number: 650201 11
Pineville, NC 2814
9
i
Attn: Mr. Syed Hasnain
Clieni Reference: 117 9/UE :#15081-3 9-01/Sharon Rd.test
PACE Sample Number: 92 02839
Date Collected: 02/01/9
Date Received: Z/01 /9
���(qZM1
8 i t— 1..:
i , ii a.
Parameter _ Units MDL METHOD DATE ANAIYZEO
r
ORGANIC ANALYSIS t
s
INDIVIDUAL PARAMETERS
1,2-Dibromoethane (EDB) ug/L 0.05 NO 504 02/06/95
PURCEABLE KALOCARBONS AND R MATIGS 601 02
Chloromethane t u9/L 1.0 NO 2/0/9
6ro omethane ug/L 1.0 NO 02/09/95
Dichlorodifluoromethane ug/L 1.0 NO 02/09/95
Chloroethene (Vinyl chloride_ ug/L 1.0 NO 02/09195
Chloroethane g/L 1.0 NO 02/09/95
Dichloromethane ug/L 1.0 NO 02/09195
Tri chl orofl uoromethane ug/L 1.0 NO 02/09/95
1,1-Dichloroeteneu/L 1.0 NO 0/09/9
1,1Oichoroethane uL 1.0 NO 02/09/95
trans-1,-Dichloroethene ug/L 1.0 NO OZ/e9/95
Chloroform uL 0.5 NO 02/09/95
1,2-Dichoroethane` ug/L 1.0 NO 02/09/95
i
1,1 1 -Tri chloroethane ug/L 1.0 NO 02/09/95
Carbon tetrachloride ug/L 1.0 NO 02/09/9
Bromodichlor°methane ug/L 0.5 NO 0209/95
1,2-Dichloropropane ugL 1.0 NO 02/09/95
trans-1,-Dichloro ro e e u9 L 1.0 NO 02/09/95
1,1 -Tr chloroethene ug L 1.0 NO 02/09/95
Diomochloromethane x u9L 0.5 N D0/9
1,12-Trchloroethane ug/L 1.0 NO 02/09/95
cis 1,3-Dichloropropene ug/L 1.0 NO 02/09/95
-Chloro thoxyethano ug/L 1.0 NO 02/09/95
Bromofortn ug/L 0.5 NO 02/09/95
1,1 ,--Tetrachloroethane ug L 1.0 ND 02/09/95
Tetrachloroethene _ ug L 1.0 NO 02/09195
Methyl-t-butyl ether ug/L 1.0 11 02/09/9

i
REPORT OF LABORATORY ANALYSIS
e
Mr. Syed Hasnain March 23, 1995
Page 2 PACE Project Number. 650201511
Client Reference:'#11769/UC 1581-329-01/Sharon Rd. West
PACE Sample Number: 92 0322396
Date Collected: 02/01/95
Date Received: 0/01/9
Client Sample 10: Mw-
Paramiter Units MDL METHOD DATE ANALYZED
x
ORGANIC ANALYSIS _ I
PURGEABLE HALOCARBONS AND A HATI'CS 601 602
Isopropyl ether o /L 1.0 1.3 02/09/95
Benzene g/L 1.0 2.1 02/09/gS
Toluene og/t 1.0 1.2 02/09/95
Chl'orobenzene ug/L 1.0 ND 02109/95
Cthylbcnzene og/L 1.0 4.2 02/09/95
ylienes o9/L 1.0 22 0/09/95
1,3 Dich'lorobenzene ug/L 1.0 ND 02/0 /g
1,4-Dichlorobenzene og/L 1.0 NO 0 /09/9
I,2-Dichlorobenzene ug/L 1.0 ND 02/09195
z
Y
r

r
r
OF LABORATORY ANALYSIS
REPORT
ECtzitt 0NM1SSt{TAC t 1.2011A3ORIE S
z
Mr. Syed Hasnain i March 23, 1995
Page 3 PACE Project Number. 6S0201S11
Client Reference. #11759/OES 15081-329-01/Sharon Rd. West`'
fi $ample Number: � 92 0328400
Date Collected. 02/01/95
Date Received: 02/01/9S
Client Sample ID: M-2
Parameter units MDL METHOD DATE ANALYZED
;t
ORGANIC ANALYSIS
INDIVIDUAL PARAMETERS
1,-Dioromoethane EDS t ug/L 0.05 ND SO4 02/06/95
PRSEABLE HALOCARBONS AND AR,. TICS 601/602
C ioromethane.' ug/L 10NO 02/13/95
Bromosethane `• ug/L 10 NO 02/13/95
Dichlorodifluoror ethane ug/L 1.0' NO 02/13/95
Chloroethene (Vinyl chloride: ug/L 10 NO 02/13/95
Chloroethane x u9L 10 ND 0/13/95 r
Diehloromethane L 10 ND 02/13/9S
Trichlorofluoromethane ug/L 10 ND 02/13/95
1,1-Dichloroethene a /L 10' ND 02/13/96
1, 1-Di chl oroethane ug/L 10 ND 02/13/95
trans-1,2-D%hloroethne ug/L 10 NO 02/13/95
Chloroform ug/L 5.0 NO 02113/95
I, -D hl oroe a e' _ ug/L 10 AID 02/13/95
Y
1,11-Trichloroethn ug/L 10 ND 0213/9
Carbon tetrachloride u/L 10 ND 0213/9
Bro odichlc ethane u9/L 5.o ND 02113/95
1,2-Dichloropropane ug/L 10 ND 02/13195
trans- It 3-Di chl oropropene W u /L 10 NO 0 3/9
1,1,2-Tr chloroethene ug/L 10 NO 02/13/95
Dibromochloromethane ug/L 5.0 NO 02/13/9
1,1-Trichloroethane ug/L 10 NO 02/13/95
cis-1, -ili chl ropropen ug/L 10 ND 02/13/95
-Chloroethoxyethane ug/L 10 NO 02/13/9
Bromofo ug/L 5.0 NO 02/13/95
1,1,2,2-Tetrachloroethane ug/L 10 NO 02/13/95
Ttrachloroethene ug/L 10` ND 021395
Methyl-t-butyl ether ug/L 10 1100 02/13/95
Isopropyl ether ug/L 10 ND 02/13/95
Benzene ug/L 10 NO 0/1/
Toluene. uq/L 10 NO 02/13/95

tlG
REPORT OF LABORATORY ANALYSIS
Mr, Syed Hasnain
march 23, 1995
Page 4
PACE Project Number: 65020I.II
Client Reference. "-11769/UES
15081 29-OI/Sharon
Rd. West
PACE Sample Number:
92 0328400
Date Collected.
02/01/95
Date Received.
;
02/01/9
Client Sample ID:
�
MW-2
Parameter
f Units
MDL
METHOD
DATE ANALYZED
ORGANIC ANALYSIS
c
PURG ABLE HALDCAR80;NS AND AR
MAlICS
601/602
Chlcr benzene
a /L
10
ND
02/13/95
Ethyl enz ne
ug/L
10
ND
02/13/95
Xylenes
ug L
10
NO
02/13/95
1,3-Dich ore en e
F 9/L
10
NO
02/13,/9
1,4;-Dichlorobenzene
ug/L
10
NO
02/13/9S
I,Z-Dichlorubenzene
ug/L
10
NO
02/13/95
F
y
F
F
F
y
p

i
i
tA0NMFNTAt. LAOORATORMS
REPORT OF LABORATORY ANALYSIS
Mr. Syed Hasnain March 23. 1995
Page 5 PACE Project Number: 650201`51
Client Reference: #11769/UES 150 1- 2 -01/Sharon Rd. West
PACE mple Number. 92 0328418
Date Collected: 02/0/95
Date Received: ` 02/01/95
Client Sample 10: MW-3'
Parameter units MOL METHOD DATE ANALYZED
ORGANIC ANALYSIS
I,2-•Oibromoethane EOB
x
u/L
0.05
NO
504 02/06/95
PURGEABLE HALOCARBONS AND
ARMATICS
601/602
Chloromethane
ug/L
1.0
NO
02/09/95
Bromomethane
ug L
1*0
NO
02/09195
Oichlorodifluoromethane
ug/L
1.0
NO
02/09/95
Chloroethene (Vinyl chloride,'::
g/L
1.0
NO
02/0919S
Chloroethane
ug/L
1.0
NO
02/09/95 "
Oihloromethane
3
ug/L
1.0
NO
020/95
Trichlorofluoromethane
a /L
1.0
NO
02/09/95
1,1- Di chl cruethene
ug/L
1.0
NO
02/09/9
I,I Oichloroethane
ug/L
1.0
NO
02/09195
trams-1,2--Oichloroethene
ug/L
1.0
NO
02/09/95
Chloroform
ug/L
0.6
NO
02/09/95
1,2-Dichloroethane
ug/L
1.0
NO
02/09/95
1,1,1-Trichloroethane
ug/L
1.0
NO
02/09/95'
Carbon tetrachloride
'.
uq/L
1.0
NO
02/09/95
Bromodichlormethane
ug/L
0.5
NO
02/09/95
1,-Oichloropropane
ug/L
1.0
NO
02/09/95
trans-1,3-Dichlorop+ropene
ug/L
1.0'
NO
02/09/95
1,1,2-Trichloroethene
ug/L
1.0
NO
02/09/95
Oibromochloromethane
ug/L
0.5
NO
02/09/95
1,1,2-Tri+chloroethane
x
ug/L
1.0
NO
02/09/95
cis-1,3-Oichloroprop ne
ug/L
1*0
NO
02/09195
2-Ch oroe ho eth ne
ug/L
1.0
NO
02/09/95
Bront oform
ug/L
0.5
NO
02/09/95
1,1,2,2-Tet.rachloro tha
ug/L
1.0
NO
02109/9
Tetrachloroethene
u /L
1.0
NO
02/09/95
Methyl-t-butyl ether
A
u9/L
1.0
NO
02/09/95
Isopropyl ether
ug/L
1.0
NO
02/09/95
Benzene
r
ug/L
1.0
NO
0/09/5
Toluene
ug/L
1.0
NO
02/09/95,

plc
Ir. Syd Masnain
"age 6
umber:
d:
ID:
SI
76"n
1,-gichorobenzene
1,Z-Dichloroben ene
I
'T OF LABORATORY ANALYSIS
March 2, 1995
RACE Project Number. 650241 1I
Rd. i test
92 0328418
02/01/95
02/01/95
MW-3
MILL METHOD DATE ANALYZE
I
Ir. Syd Masnain
"age 6
umber:
d:
ID:
SI
76"n
1,-gichorobenzene
1,Z-Dichloroben ene
I
'T OF LABORATORY ANALYSIS
March 2, 1995
RACE Project Number. 650241 1I
Rd. i test
92 0328418
02/01/95
02/01/95
MW-3
MILL METHOD DATE ANALYZE
I
4
MA IDS
01/602
u
1.0
NO
02/09/95
ug/L
1.0
NO
02/09/9
ug/L
1.0
NO
02/09/95
a
ug/L
1.0
NO
02/09/95
ug/L
1.0
NO
02/09/95
ug/L
1.0
NO
02/09/95
z

I ;1AJ aji"'J A W]
REPORT OF LABORATORY ANALYSIS
. S, ed Ha nain March 23, 1995
Page 7 PACE Project Number. 650201511
Client Reference. 11769/UES 15081-329-01/Sharon Rd. West
}
PACE Sample Number: 1 92 03Z8 Z6
Date Col Iected: s 02/01/9
Date Received: 02/01/95'
Client Sample ID: MW-4
Parameter ! units MOL METHOD DATE ANALYZED
.. 0
ORGANIC ANALYSIS
INDIVIDUAL PARAMETERS
1,2-Dibrornoethane (EDS) ug/L 0.05 ND 504 02/06/9
P RGE B E 14ALOCARRONS AND AR MATICS 601/602
Chloromethane g L 1.0 ND 02/09/95
Bromomethane u9/L 1.0 NO 02/09/9 .
Dichlorodifluoro thane ug/L 1.0 ND 02/09/95
Chloroethene (Vinyl chloride r g L 1.0 NO 02/09/95
Chloroethane uL 1..0 ND 02/09/95-
Dichloromethane ug/L 1.0 NO 02/09/95
a
Trichlorof1uoromethane ug/L 1.0 ND 02/09/95
I,I-Dichloroethene ug/L 1.0 ND 02/09/95
1,1-Dichlorothane ug/L 1.0 ND 02/09/95
trans-I,2-Diloroethene ug/L 10 ND /095
Chloroform ug/L 0.5 NO 02/09/95
1,2-Dichloroethane ug/L 10 1.2 02/09/95
1,1,1-Trch"looehne _ ug/L 1.0 ND 0/09/5
Carbon tetrachloride ug/L 1.0 NO 02/09/95
Bro odichlormethane ug 0.5 NO 02/09/95
1,2 Dichloropropane ug/L 1.0 NO 02/09/
trans-1,3-Dichloroprope e u /L 1.0 NO '09/95
1,1 2-Trichloroethene ug/L 1.0 ND 02/09/95
1,1,;2-TrichIoroethane ug/L 1.0 NO 02/09/95
cis-1,3-Diichl€�roprogene ug/L 1.0 NO 02/09/95
-Chloroethoxyethane ugL 1.0 ND 009/9
8rorcoform ug/L 0.5 NO 02/09/95
1,1,2,2-Tetrachlor ethane u /L 1.0 NO 02/09/9
Tetrachloroethene ug/L 1.0 NO 02/09/95
Methyl-t-butyl ether ug/L 200 9100 02/09/9.
Isopropyl ether ug/L 1.0 46 02/og/95
Benzene u/L 1*0 ND 02/09/9S
Toluene ug/L 1.0ND 02/09/95,

9NVIAONUIENTAL
RATORISS REPORT OF LABORATORY ANALYSIS
Mr. Syed Hasnaln March 23, 1995
Page 8 PACE 'Project Number. 650201511
Client Reference: #11769/CUES #15081-329-01/Sharon Rd. hest
PACE Sample Number: : 92 0328426
Date Collected: 02/01/95
Date Received: 02/E11/95
Client' Sample ID: MW-
Parameter Units MOL METHOD ' DATE ANALYZED
ORGANIC ANALYSTS
i
PURGEABLE HALOCAR6DNS AND AR MAT1CS 6 /602
Chlnrnbenzene g/L 1.0 ND 02/09/95
Ethylbehzene ug/L 1.0 ND 02/09/95
ylen u/L 1.0 ND 02/0995
,3-Dichlorobenzene ug/L 1.0 ND 02109/95
1,-Dichlorobenzene a /L 1.0 ND 02/09/95
,-Dichlurobenzene ug/L 1.0 ND 0`2/09/95
fi
x
s
t

--REPORT OF LABORATORY ANALYSIS
. Syd Hasnain March 2, 1995
'age 9 PACEProject Number: 650201511
Client Reference. #11 69/UES 15081- 9-01/Sharon Rd. West
PACE ample Numb r : 92 0328434
Date Collected: 02/01/95
Date Received: 0/01/9
V ient Sample ID Mw 5
P ramiiter Units MDL METHOD DATE ANALYZED
ORGANIC ANALYSIS
INDIVIDUAL PARAMETERS
1,2-Dibromoethane; (EDR) a /L 0.05 NO 504 02/06/95
r
PU GEAOLE HALUCAR ONS AND AR M'ATICS 60 /602
Chlorom thane ug/L 1`.0 NO 02/10/95
Rromomethane' ug/L 1.0 NO 02/10/95
Dichlorod i fl uoro Methane ug/L 1.0 NO 02110195
Chloroethene (Vinyl chloride ug/L 1.0 ND 02/1/95
Ch oroethane; ug/L 1.0 NO 2/10/9-5
Dichloromethane ug/L 1.0 ND 02/10/95
Tr chlo ofluoromethane ug/L 1.0 NO 02110/95
1, Dichloroethene a /L 1.0 NO 02/10/95
1,1-DichIoroethane r ug/L 1.0 NO 02/10/95
trans-1,2-Dichloroethehe ug/L 1.0 NO 02/10/95
Chloroform ugL 0.5 NO 02/10/95
1,2Deloroethane ug/L 1.0 NO 02/10/95
1,1,1-Trrichloroethane ug/L 1.0 ND 02/10/95
Carbon tetrachloride ug/L 1.0 NO 02/10/95
6romodichlo ethane uL 0.5 NO 02/10/95
1,-Dichloropropane ug/L 1.0 NO 02/10/95
trans l,3-Dichloropropene ug/L 1.0 NO 02/10/95
1,1,2-Trio leroet e e g L 1.0 NO 02/10/95
Dibromochlorcmeth ne u L 0.5 NO 02/10/95
1,1,2-Trichlo�roethane ug/L 1.0 NO 02/10/95
cis-1,.3-Dich1oroprope ne 02/10/95
ug/L 1.0 NO
-Chloroethoyethane ug/L 1.0 NO 02/10/95
Sro oform ug/L 0.5 ND 02/10/96
1,1,2-ercloroeth u/L 1.0 NO 020/9
Tetrachloroethene ug/L 1.0 ND - 02/10/9
Methyl-t;butyl ether ug/L 200 20 0/10/9
Isopropyl ether ug/L 1.0 12 02/10/95
Benzene ug/L 1.0 ND 02110/95
Toluene ug/L 1.0 NO, 02/10/95

r
film.
Z04IPONUENTAL LASOPATORIES REPORT OF LABORATORY
e
r. Syed Hasnain March 23 1995
Page 10 PACE Project Numbers 65C?20151
Client Reference: #117 9/UES #15001-329-01/Sharon Rd, West
PACE Sample Number: 92 0328434
Date Collected:
a2/01/95
Date Received: 02/01/95
Client' $amp) e IG
Mkt-
Parameter Units NOL METHOD DATE ANALYZED
ORGANIC ANALYSIS
PURGEASLE HAL.00ARBONS AND AR MATICS 601/ 02
Chlerabenaene ug/L 1.0 NO 02/10/95
C b l ben ene s ug/L 1.0 Ott?' 02/10/ S
uL
Xylenes NO 02/10/95
1,3-Oihlnrebenene r /L 1.0 ND
1,!4-Oichlorobenaene u L 1.0 NO 2/ 0/95 /
1,'2Oichlorvbnee
g/L .t� NO d 10 S
2/ /9S
e
t
e

Fu�REPORT OF LABORATORY ANALYSIS
Mr. Syed Masnain' x March 23, 1995
-Page 1 :' PACE Pr6 ect Number: 6S0201SI1
Client Reference. #11769/LIES;#15081-329-01/Sharon Rd. west
PACE Sample Number: 92 0328442
Date Collected: r 02/01/95'
Oahe Received:02/trl/9
Client Sample IO.`e MN-7
Parameter Units MDL METHOD BATE ANALYZED
ORGANIC ANALYSIS
INDIVIDUAL PARAMETERS
1,-Oibromoethan EO81 ug,/L O:OS NO 504 02/06/95
PURGEABLE HALOCAR80NS AND AR MATIC 601 602
Chlofomethane ug/L 1.0 NO 02/13/95
5romomethane
u`L 1.0 NO 02/13/95
Dichlorodifluororethane ugL 1.0 NO 02/13/95
Chloroethene '(Vinyl chloride' ug/L 1.0 NO 02/13/95
Chloroethane u/L 1.0 NO 0/13/95
Oichloromethane w ug/L 1.0 NO 02/13/95
Tri hlorofl uoromethane ug/L 1.0 NO 02/13/95
1,1-Oichloroethene 0 13/9
ug/L 1. NO
1,1-Oichloroethane ug/L 1.0 NO 02/13/9
trans-1#2-Dichloroethene ug/L 1.0 NO 02/13/9
Chloroform u /L 0.5 NO 02/13/95
1,2-Oichloroethane ug/L 1.0 NO 02/13/95
,1,1-Trichlorothne ug/L 1,0 NO OZ/13/95
Carbon tetrachloride ug/L 1.0 NO 02/13/95
Bro odichla ethane ug/L 0.5 NO 02/I3/95
1, -Oi hleropropane _ u9 1.0 NO 02/13/95
trans-1, -Di chl oro rop ne ug C 1.0 NO 02/13/95
1.1,2-Trichloroethene ug/L 1.0 NO 02/13/ 5
Oibromochloromethane u9L 0.5 NO 02/13/95;
1,1,2-Trichlor eiha re ug/L 1.0 ND 02/13/95'
cis-1,3--Oloroprene ug/L 1.0 NO 02/13/95'
-Chloroethox than ug/L 1.0NO 02/13/95
romd orm ug/L 0.5 NO 02/I3/95
1,1,,2-Tetracrloroethane ug/t 1.0; O 021/95;
Tetrachloroethene ug/L 1.0 NO 0/13/95
Methyl-t--butyl ether ug/L 1.0: NO 02/13/95
Isopropyl ether ug/L 1.0 NO 02/13/95
Benzene ug/L 1.0 NO
02/13195'
Toluene uc3/L 1.0 NO 02/13/95

Mr, Syed Hasnain
Page 1
_
March ,; 1995
PACE Pr43ect Number 65020151
Client Reference. #11769/UES '#15001-329-01/Sharon
Rd. West
'ACE S*amplo Number:
92 0328442
late tol l ected :
)ate Received:02/01/9a
t? 1 /95
.l ie t Sample Its:
MW 7
"aram ter
r Units
MOL
METHOD
DATE ANALYZED
i GANIC ANALYSIS
r
URGEABLC MAL0CAR60NS AND
►I c�rcrbenen
Ail MATICS
6t�1/602
thylbenzene
ug/L
1.0
NO
02/13/95
ylenes
L
1.0
NO
02/13/95
02/13/95
,3-0ichloroben.zene
-i chI CI!"Abenzene
ug/L
t!g/L
1. U
1.0
NO
NO
02/13/95
0 chl rob n ene
q/L
1.0
NO ,
02113/95
02/13/95
i
3
S

r�
x
REPORT OF LABORATORY ANALYSIS
. Syed Hasnain March 23 1995
Page 13
PACE Project Number: 6502015
Client Reference: 11 69/UES 15081- -01/Sharon Rd. West
PACE Sample Number: 92 A2450
Date Collected.
Date Received: 0/01/9502/O1/9S
Client Sample 1D: MW8
Parameter x Units MDL METHOD DATE ANALYZE
ORGANIC ANALYSIS=
INDIVIDUAL PARAMETERS
1',2-Dibromoethane EDS) ug/L 0.05 NO 504 02106195
PURCEABLE H LOCA SONS AND AR #ATICS
Chlororethane 601/602
Bromom thane 9/L 1.0 NO 02/10/95
Dichlorodifluoromethane ug/L 1.0 NO 02/10/95
Chloroethene (Vinyl chloride + u/L 1.0 NO i2/10/95
Chloroetharte _ ug/L 2.0 NO 02/10/95
Dichloromethane + /L 1.0 NO 02/10/95 .
u/L 1.0 ND2/lti/95
Trichlorofluoromethane ug/L 1.0 NO /10/95
1,1 Dichloroethene ug L 1.0 NO 02/10/95
I,'I Dichloroethanc ug/L 1�0 NO 02/10/45
trans-l2-Dlehlorb+hene ug/L 1.0 ND 42/10/95
Chloroform � 1,2-Dichloroethane ug/L 0.5 NO 02/I0/95
u/L 1.0 24 02/10/95
1,1,1 Trichloroethane ug h. 1.0 ND 02/I0/9 Carbon tetrachloride ug/L 1.0 NO 02/10/ 5
Bro odichlc ethane ug/L 0.5 NO OZ/10/ 5
1.2-Dichloropropane u9/L 1.0 NO 02/10/95
trans--1,3-Dichloropropene _ u9/ L 1.0 NO
I,,2-Triehlorothene x 02/10/9,5
u9/L 10 NO 02/10/9
Dibromochlorometha e u /L 0.5 NO 02/10/95
1,1,2-Trichloroethane
cis-1,3-- is lcro ro ene ug L 1.0 NO 02/10/9
-Chloroethoxyethane u9/L 1.0 NO 02/10195
ug/L 1.0 ND 02/10/95
Bromofor t ug/L 0.5 NO 02/10/4
1,1$212-Tetrachlorbethane
ug L 1.0 NO 02 10/9
Tetrachloroethene
Methyl-t-butyl ether u1.4 02/10/95
Isopropyl ether u9/L /L 20 420 02/10/95
Benzene ug/L 1.0 390 02/10/9
Toluene ug/L 1. NO
02/10/95
y 02/10/95.

March 23, 199
PAGE Project Number: 6502015`
. West
PACE SAmle Number:
Date Collected:
92 0328450
Date Received:
0 /01/95
?lent sample I •
/01/ S
Parameter
M$ -B
Chits
MDL
METHOD
DATE ANALYZED
ORGANIC ANALYSIS
PURGEABLE HALAGARSON5 AND AR �A IGS
hlcr benzene
Ethyl benzene
g/L
601/60
NE#
0/10/99
Xylenes
9/L
/L
I.D
1.6
02/10/
1,3- i lenz ne
1,,4-Qi hlorbben ene
9/L
1.0
1.0
1.4
NO
' l 0/95
1*-Dichloroben ne
ug/L
1.0
NO
02/10/95
02110195
tag/L
1.4
NO
02/10/9
k
3
E
3
Y:ItaAt �iiP{''!Y �1swa} e✓ ♦ ... e.. $. type i

mLAQORATO faSr REPORT OF LABORATORY ANALYSIS
-------------------
r. Syed Hasnan March 2, 1995
Page 15 PACE Project Number: 650201.'
Client Reference: 11769/UES 15081- 29-Ol/Sharon Rd. West
PACE Simple Number: 92 0328469
Date Collected. 0/01/95
Date Received: 02/01/95
Cl ien * sample D:
Parameter MW-10
Units' iOL METHOD DATE ANALYZE
DRCANIC ANALYSIS
INDIVIDUAL PARAMETERS
1>2-Oi'bromoethane (EDE)
r gL 0,05 NO 504 02/06/95
PURGEABLE HALOCARBONS'AND RR kATIC 501/502
hlororethane Ug
/L 1.0 NO
Bromomethane cog/L 1.0 N11 02/10/95
Oichlorodifluorometha e 02/10/95
Chloroethene (Vinyl chloride ug/L ,0 1.0 NO
02/10/95
Chloroethan ug/L l.O NO 02/10/95
Oichloromethane g/L 1.0 NO 02/10/95
02/10/95
Trichlorofluoromethane ug/L 1.0 NO ;
1,I-Dichloroethene uJ i 1.0 NO 02/10/95
1,1-Di hloroethane ug/L 1.0 NO 02/10/95
trans-1,2�-Oichloroethene 42/10/9S
Chloroform ug/L 1.5 NO 02/10/95
1,2�-Oichloroethane 02/10/95
u /L 1.0 NO
02/10/95
1,1,I-Trichlbroethane ug/L 1.0 NO
Carbon tetrachloride 02/10/95
6romodichlo 'ethane ug/L 1'0 NO 02/10/955
1,2-Oichloropropane ' /L O S NO 02/10/95
trans- 1,3-Dichloropropene /L 1.0 PLO 02/10/95
1 I,2-T ichlnroet#iene ug/L 1 0 NO 02/10195
ug/L 10 NO 0/10/95
Oibromochloromethane ug/L 0.5 NO
1,112-T ichloroethane O /10/ 5
cis-1,3-Oichl ro ro ene u9 L 1.0 NO 02/10/95
2�-Chloroethoxyeth ane u / 1.0 NO 02/10/95
Rromofo 9/ 1.0 NO 02/10/95
ug/L 0.5 NO
1,1,2,2-Tetrachloro tha ug/L I.0 NO 02/10/95
0/10/9
Tetchloroethene ug/L 1.0 NO
Meth l-t-butyl ether 02/10/95
Isopropyl etherug/L 1.0 NO 02/10/95
Benzene
ug/I- 1.0 NO 02/10/95
Toluene ug/L 1.0 NO 02/10/95
ug/L 1.0 NO 02/I0/9.

a
gORMENTAL LASOOtAJORIISREPORT OF LABORATORY ANALYSIS
Mr. Syed Hasnain
Page 16 March 23, 1995
PACE Project Number: 6502it15
Client Reference: n11769/l1CS 15061-32 -a1/Sharon Rd. West
PACE 5aamp7e Number* 92 0328469
Date Collected: 5
O1/9 Date Received: 002/1/95
Client' Sample D:
Param ter MW-10
Units MDL METHOD OATS ANALYZE
ORGANIC ANALYSIS
P RG `ABLE HALOCARSONS AND AR MATICS
Cblorobenzene g/L N 601/60
hylbenzene 02110195
xylene uL 1eC R0 02/10/95
1► -Di chl orbbenzene u /L 2.0 ND 02/10/95
1 4-Dichlorobenzene ug/L 1.0 NO 02/10/95
1,2-Dichlorobenzene 02/10/95
ug/L 1.0 NO
02/10/95
These data have been rreviewe :and are approved for release.
" F
Margaret S. }larding
Manager, Organic Chemistry
R
E

e
n
ENVIRONIAeNTAL
LA80RA1r0R,Lr$ REPORT OF LABOA CRY ANALYSIS
Mr. Syed Hasnain DATA Page 22 QUALITY CONTROL March 23, 1995
PACT` Project Number, 6502011
Client Reference: 11769/UES 15081.329-ol/Share Rd, West
PUACCARLE NALOCARRONS AND; AR �AT1CS
Batch: 92 33738
Samples: 92 0328400, 92 0328 j4, 92 0328442, 92 0328450, 92 0328469
METHOD BLANK
Parameter Method
Units ri is OL Blank
roorethane u9/L 1.0 NtOi
Dichlorodifluoromethane
Chloroethene (Vinyl chloride ug/L 1.0 NO
Chloroethane u/L 1':0 NO
Oichlo omethane ug/L 1.0 ND
Trichlorofluoromethan ug/L 1.0 NO
1,1-Oichloroethene u/L 10 N�
1,1-Oichloroothane
trans,2-lichloroethene urn/L 10 NO
ug/
Chloroform L 1.0 NO
12-Oihlorothane u9L 0.5 NO
u/L 1.0 NO
1,;1,1-Trichloroethane
Carbon tetrachloride NO
Bromodichlormethane ug ug/L 1.. NO
1,2Oichlo propane ug/L 1.0 NO
trans 1,3-Dich)oropropene u9/L 1,0 NO
1,1,-Trichloroethene
* u9/L 1.0 NO
Oibromochloromethane R ug/- 0.5 NO
1,1, 2�-Tri ch l oroet tune
cis-1,3-Oichloro ro ene a /L 1.0 NO
2-Chlorou9/L 1. NOlethoyetane u
Bromoform g/L ].b NDug/C 0.5 NO
1,1',2,2-Tetrachloroethane ug/L 1,0 N
Tetrachlroeen u9/L 1.0 NO
Methylt-butyl ether
Isopropyl ether u/L 1.0 NO
Benzene ug/L 1,0 NO
Toluene u9/L 1,0 N
Chlcrobenzeneuq/L 1,0 NO
ug/L 1.0 NO
Ethylbenzene
ylene ug/L 1.0 ND
ug/L 1.0 ND

reTSTO(el 1
. yed Hasnain QUALITY CONTROL DATA
g 1 March 23, 1995
PACE Project Number: 650201!
lent Reference: #11769/U6S 15081-32 --41/Sharon Rd. West
�r-[ABLE 14ALOCARRONS AND AR TICS
Sat h: 92 33722
1ples: 92 0328396, 92 0328 18, 92 0328426
UO BLANK.
ameter Method
d
m ethane Units MOL Blank
u L
enzene
9/
ug/L
I.V
1.0
Nib
NO,
r methane
ug/L
1.0
NO
lil chloride
ug/L
1.0
Ni?
}
ug/L
1.0
NO
u /L
1,0
NO
M et ane 1.ug/L
1.0
NO
erne
ugL
1.0
ND
aneug/L
ucatene
ug/L
1.0
1'0
NO
NO
ne
ug/L
ug/L
0,5
1.0
NO
NO
=ttrar►e
pride
ug/L
1.0
NO
ug L
1.0
NO
lane
ug L
0.5
NO
pane
ug/L
1.0
NO
iroprnpene
theme
ug/ .
1.0
NO
ug/L
1.0
NO
hane
thane
ug/L
0.5
N
u
g/
u9/L
I.0
1.0
NU
ND
ug/L
0.5
NO
ug/L
1.0
NO
ug/L
1.0
ND
ug/L
1.0
N
u9/L
1.0
ND
ug/L
1.0
NO
ug/L
1.0
NO
u9/L
1.0
NO
ug/L
1.0
NU
ug/L
1.0
ND

NdMMMANWAM
0 VIRONUENTAL LAAORAYMPIrc REPORT OF LABORATORY ANALYSIS
Pa Eyed R snai ge 18 QUALITY CONTROL DATA March 23, 1995
PACE Project Number. 6502015
client Reference. 1 769/UCS 15081-329-OI/Sharon Rd. west
r
1.2-Dibromoethane QB) rt
Batch. 92 33552
Samples: 92 0328396, 92 0326 00, 92 0328418, 92 0328426, 92 0328434
92 03 8442, 92 0328 50, 92 0328469
METHOD BLANK: a
Parameter Method
60$ Units- MDL Blank
e
9/ :5
SPIKE AND SPIKE DUPLICATE.
Spike
Parameter Spike 0upl
Units MIL 920326768 S ike Recv `Recv RPp
-0i raanethe CC1B} C.. e:85
z
Ug
LABORATORY CONTROL SAMPLE.
Parameter Reference
imaehane E06 Units H0 Value Recv
� u9L 0. c? 5
a

f— VAJ %
* t • 4;
t
t
w e r
8
R
4
$AlilPLEVOSC iIPTION 7IM9 "MATRIX PACEN*
t
N Accli igo BY l AFFILIATION At t
Ift
Ica oats
,k
' .Ys
t
9 ' n
C„AYP <-a.. wit, V:`"4 ` s ='"'
h 7
SIEE REVIE

D.
Parameter Maximum Conc. Average Influent Conc. Effluent
Observed (25° Safety Factor) Conc.
(ug) (ug (ug )
1. Benzene 39 7.5 BDL
2. Toluene 1.2 0.8 BDL
3. Ethylbenzene 4.2 1.7 BDL
4. Xylene 22 6.1 BDL
6. MTBE 9100 4913.9 17.5
7.1,2 DCB 24 4.5 BDL
88 IPE 970 210 NC
Notes: BDL = Below Detection Umits
Not Calculated
ugA = micrograms per liter
The computer program "Airstrip" was used to calculate the effluent calculations after
treatment. The design calculations are presented in Appendix D-2 of the attached CAP. The
effluent concentration of isopropyl ether (IPE) was not able to be determined from the airstrip
program. However, based on the solubility of IPE in water and stripping potential of this
contaminant, we expect the effluent concentration of RE to be below detection limits. These
calculated effluent concentrations are based only on treatment of the groundwater by the air -
stripper. The removal rate of the contaminants will be further increased when an oil/water
separator and carbon adsorption units are added to the treatment system. The removal rate
of MTBE is 99. °tom when the groundwater is treated only with the air -stripper; however, this
rate is expected to be 100` with the addition of an oil/water separator and carbon drums.

N A L Y S I S
OF S T R I P P
I G
T 0 W E R
)ROJECT s Former '7-Eleven ;
Store No. 11769
DATE : - /8/1 95
WCINRER ]arid Preston
PACE : 1/
PF YS I L CONSTANTS
►esign temperature
70.0
degrees
F.
ensity of water
62.3
lb/ft-3
ensity of air
0.0749
lb/ft*3
iscoity of eater
: 6.57E-04
lb/ft .-s
`iscosity of air
: 1.19E-05
lb/ft.
urface tension of water
73
dyne/cm
,tmospheric pressure
1.00
atm
me
Benzene'
olecular weight
78.1 g/mol
ailing paint
176 degrees F-
olal volume at boiling point
0.0960 L/mol
en ''s Constant
0.23000
emperature Constant
1849 deg K
olecular diffusivity in air
1:0 E-04 ft�2/s
olecular diffusivity in water
9.88E-09 fth2/
PACKING
PROPERTIES
me
Jaeger Tripacks
asking Material
Plastic
urinal Size
2.00 inch.
pecific Area
47.9 ft-2/ft-3
ritical surface tension
33 dyne/cm
ack.ng depth
18.0 ft
it friction factor
15
AIRSTRIP Ver. 1. (C) 1988

w
A N A L Y S T S OF S T R I P
» Former -Eleven iStore No. 1.1.769
» David Preston
LOADING RATE
C' a f k!�* " • '* •
DATE » 6/8/1.995
PAGE » 2/2
s- 1. lb/ft-2.
-A m/ft"2
" H2O/ft
im
w. s
r
t
exit concentration 7..50E 0 u3/L
e t concentration » 1..20E-03 ug/L
ion removed » 100.0 %_
of contaminant removed` .42E-04 lb/ft-2.day
ntration in airstream 7.08E- 4`m / t-3
xpressed per unit of stripping tower crass -sectional area
xpres ed per unit of tower length

N A L Y S I S
OF S T R'I PiP I N G
T 0 W E
>ROJECT
DATE : 6/27/1995
WGINEER ; David Preston
PANE : 1/2;
PHY'S I L CONSTANTS
)asign temperature
70.0 degrees
F.
)ensi y of water
62.3 lb/ft-3
)enslty of air
0.0749 lb;/ft 3
liscosity of water
. 57E- 04 lb/ft .
lisco ity of air
: 1.19E-05 lb/ft,s
Nurfaee tension of water
73 dyne/cm
,tmospheric pressure
1.00 atm
CONTAMINANT PROPERTIES
fame
Ethylbenene
lolecular weight
106`.2 g/mol
toiling point
277 degrees
F.
lolal volume at boiling point 0.1404 L/molr
cenry's Constant
0.27000
'emperature Constant
1904 deg K
folecular diffusivity in
air 8.16E-05 ft 2/s
lole:cular diffusivity in
water 7.87E-09 ft-2/
PACKING PROPERTIES
'arne
Jaeger Tripacks
acking Material
Plastic
cminal Size
2.00 inch
ecific Area,
47.9 ft" /ft-3
ritical surface tension
33 dyne/cm
acking depth
18.0 ft
it friction factor
15
AIRSTRIP Ver. 1. (C) 1988

NA L"Y' S I S OF S TR'I P P I NG T 0 W E R +****
17%rrW 6 2
3INEER David Preston PAGE 2/2'
LOADING RATES
�er mass'! loadingrate 1.29E+00 lb/ft ^ 2 .
r mass loading rate 4.66E-01 b/ft"2.
,-.er volumetric loading rate 9.30E+00 m/ft''2
r volumetric loading rate .79E+03 m/ftA2
r pressure gradient 0.174 It Ht/ft
Lumetric' air/water ratio 300.0
ripping factor 85.4
SS TRANSFER PARAMETERS
gel of packing area wetted 41.9
asking area 20.0 ""/ftA3
rate constant in water' 4.74E-04 t/s
rote constant in air 4.38E-02 t/s`
transfer rate constant 4.57E-04 t/s
mass transfer coefficient 9.15E-03 1/s
7.9477
.28 ft
CONTAMINANT REMOVAL
concentration 1.70E+00'ug/L
Luent concentration 6.52E-04 ug/L
,.tion removed 100.0
of contaminant removed 1,90E-04 b/ft"2.day
:entration in airstream 1.60E-04 mg/tt"`
Expressed per unit of stripping tower cross -sectional area
Expressed per unit of tower length

A N A L Y; S I< S
OF S T R I P 'P
I N G
T G W E R
DJECT
DATE : 6/27/1995
'GINEER : David Preston
PANE ; 1/2
PHYSICAL CONSTANTS
sign temperature
7.0
degrees
F.
nsity of water
62.3
lb/ft"3
nsity of air
0.0749
lb/ft"3
scosity of water
6.57E-
lb/ft.s
scos%ty of air
1 a 19E-05
lb/ft . s
rface tension of water
73
dyne/cm
mospheric pressure
1.00
atm
U!
me
Toluene
lecular weight
92.2 g/mol
fling point
232 degrees F.
lal volume at boiling point
0.1182 L/mol
ary`s Constant.
0.1900
mperture Constant
3517 deg K
lecular diffusivity in air
9.011E- ?5 ft"2/s
lecular diffusivity in water
.72E-09 ft"2/
PACKING
PROPERTIES
ne
Jaeger Tripackks
:king Material
Plastic
ninal Size
2.00 inch
wcific Area
47.9 ft`"2/ft"
Local surface tension
33 dyne/cm
.king depth
18.0 ft
friction factor
15
AIRSTRIP Ver. 1.2 (C)-1988

k +A N A L Y S I:S OF S T
R I PPi N G 'I'C.} W ER +��k
)JECT
DATE . 6/27/1995
31INEER aDavid Preston
PACE : 2/2
LOADING
RATES
wer mass loading rate
1,29E+00 lb/ft-2.
mass loading rate
4.66E-01 lb/ft-2.s
aer volumetric loading rate
9.30E+00 m/ftA2
volumetric loading rate
.79E+0m/ft"`2 *'
" pressure gradient
0.174 " H20/ft #�
.umetric air/water ratio
300.0
.ipping ;:Factor
63.
SS TRANSFER PARAMETERS
.-centage of packing area wetted
41.9 %-
:ted packing; area
20.0 ft-2/ft-3
Lnsfer rate constant in water
4.99E-04 ft/s
Lnsfer rate constant in air
4.68E-02 ft/s;
:rail transfer rate constant
4.75E-04 t/s
wrall mass transfer coefficient
9.52E-03 1/s
8.2672
2.1773 ft
CONTAMINANT REMOVAL
le nt concentration
8.00E-01 ug/L
luent concentration
« 1:E-04 g/L
ction removed
100.0
s of contaminant removed
8.93E--05 l.b ft- » air
centration in airstream
7.55E-05;mg/ft"3
Expressed per unit of stripping tower crass -sectional area
Expressed per unit of tower length

* *A N A L Y S I S
OF S T R I PP I N G
TQWER *** **
PROJECT
DATE : 6/27/1995
ENGINEER < David Preston
PAGE : 1/2
PHYSICAL CONSTANTS
Design temperature
700 degrees
F.
Density of water
62.3 lb/ftA3
Density of air
0.0749 lb/ ftA 3
Viscosity of water
; 6.57E-0 lb/f .s
Viscosity of air
: 1.1.9E-05 l /ft.s
Surface tension of water
73 dyne/cm
Atmospheric pressure
1.00 atm
CONTAMINANT ROP RTIE
Fame
p-Klene
Molecular weight
106.2 g/mol
Soiling paint
280 degrees
F.
olal`volume at boiling point 0.1404 /mol
Henry's Constant
t 0.29000
Temperature Constant
104 deg
Molecular diffusivity in
air 8.15E-05 ft'`2/s
Molecular diffusivity in
water 7.87E-09 ft"2/s
PACKING PROPERTIES
flame
Jaeger Tripacks
Packing Material
Plastic
"'Tominal Size
2.00 inch
> ecific Area
47. ft 2/ft"3
%-ritical surface tension
33 dyne/cm,
Packing depth
18.0 ft
kir friction factor
1
AIRSTRIP Ver. 1.2- (C) 1988

*** A N A L Y S I S OF S T
R. I P P I N G T 0 W E R% ***
TET
DATE :' 6/27/195
WEER David Preston
PAGE : 2/2
LOADING
RATES
ar mass loading rate
1..29E+00`lb/ fth2. *`
mass loading rate
4.66E-01 lb/ft-2.s *'
ar volumetric loading rate
9.30E+00 m/ft"2 *`
volumetric leading rate
2.79E+03 m/ft"`2l
pressure gradient
0.174 " H20/f't ##
imetric air/water ratio
300.0
ipping factor
91.
SS TRANSFER PARAMETERS
--entage of packing area wetted
41.9
Wed packing area m
2.0 ft-2/ft`'3
asfer rate constant in water
4.74E-04 ft/s
asfer rate constant in air
4.35E-02 ft/s
call transfer rate constant
4.58E-04 t/s!
call mass transfer coefficient
9.18E-3 1/s
7.76
2.51 ft
CONTAMINANT REMOVAL
Luent concentration
2.20E+01 u/L
Luet concentration
8.22E-03 u/L
:tion removed
100.0
5 of contaminant removed
2.46E-0 lb/ft- . ay
�entra ion'in airstream
2.08E-0 mg/;ft'`3
Expressed per 'unit of stripping tower crass -sectional area
Expressed per unit'of tower length

* A N A L Y S I S OF S
T R I P P I N G
T 0 W E****
T : Former 7-Eleven Store No.
11769
DATE : /8/195
R : David Preston
PAGE :1/2
PHYSICAL CONSTANTS
n temperature `
70.0 degrees
F.
y of water
62.3 lb/ft"3
ty of air'
0.0749 lb/ft"3
city of water
6.57E-04 lb/ft.
sity of air
1.19E-05 lb/ft.s
se tension of water
73 dyne/cm
pheric pressure
1.00 at
CONTAMINANT PROPERTIES
MTE
.filar weight
88.1 g/mol
fig point
28 degrees
F.
volume at boiling point
0.0980 L/mol
`s Constant
0.02300
Cature Constant
1904 deg K
filar diffusivity in air
9.66E-0 ft"2/n
filar diffusivity in water
9.76E-09 ft`2/s
PACKING
PROPERTIES
Jaeger Tripacks
ig Material
Plastic
kl Size
2.00cinch
,ic Area
47.9 ft-2/ft"3
.al surface tension
33 dyne/cm
Lg depth
°ictian iOactor
18.0 ft
15
AIRSTRIP Ver. 1.2 (C) 1988

N A L Y S I S OF S T
R I P; P I N G T O W E R ** **
Former 7-Eleven Store No. 11769 DATE . 6/8/19 5
David Preston
PAGE # 2/2
LOADING
RATES
ass loading; rate
..30E+00 lb/ftA2 . s
s loading rate
4.69E-01 lb/ft"`2.
alumetri.c leading rate
E+0 m/ ."`
,metric loading rate
2.81E+03 m/ft'"2
sure gradient
0.177 " N20/ft
ric air/water ratio
300.0
ag factor
7.3
MASS TRANSFER PARAMETERS
ige of packing area wetted
41.9
packing area.
20.1 ft-2/ft"3
F rate constant in water
5.30E-04 ft/s
gate constant in air
4.92E-02 ft/s
transfer rate constant
3.87E-04 ft/s
mass transfer coefficient
7.36E-03 1/a
t
.537
2.8330 ft
CONTAMINANT REMOVAL
concentration
4.91 mL
concentration
1.76E+01 ug/
k removed
99.6
contaminant. removed
5.50E-01 lb f -2. ay
-at+ion in airstream
4.62E-01: mg/ f tA3
-essed per unit of stripping tower crass -sectional area
"es'sed per unit of towerlength

A N A L Y S I S OF S
T R I P P I NG
T 0 W E R
SECT . Former 7-Eleven Store No.
11769
LATE . 6/8/1995
INFER . David Preston
PAGE . 1/
PHYSICAL CONSTANTS
ign temperature
70.0 degrees
F.
sity of water
62.3 l /ft-3
sity of, air;
0.0749 l /ft-3
..osity of water ;
6.57E-0 : lb/ft .
:osity of air ::
1.19E-05 lb/ft . s
Face tension of water
73 dyne/cm
)spheric pressure
1.00 atm
CONTAMINANT PROPERTIES
1,2-Dichloroethane
ocular weight
99.0 /meal
Ling point
183 degrees
F.
it volume at boiling point
0.0936 L/mol
='`s Constant
0.05900
>erature Constant
1820 deg K
.cular diffusivity in air
9.96E-05 ftA2/
ocular diffusivity in water
1.00E-08 fth2/s
PACKING
PROPERTIES
Jaeger Tr packs
:ing Material
Plastic
.nal Sate
2.00 inch
f c Area
7.9 ftA2/ft"
dcal surface tension
33 dyne/cm,
.ng depth
18.0 ft
friction factor
1
AIRSTRIP "der. 1.2 (C) 1988

* A N A L Y S I S OF
S T R I P P I N G T O W E R
"T :' Former 7-Eleven 'Stare
No. 11769
DATE : 6/8/1995
ER : David Preston
PANE : 2/2
LOADING RATES'
mass loading rate
..30E+00
lb " .
ass loading rate
4.69E-01
lb/ff"2.d
volumetric leading rate
9 35E+00
m/ftA2
Aumetric loading rate
2.81E+03
m/ t"2'
Wessure gradient
0.177 ti
H20/ft
>tric air/water ratio
300.0
?ing factor
18.6
SS TRANSFER PARAMETERS
Cage of packing area wetted
41.9
packing area
20.1
ft-2/ft"3
:er rate constant in water
5.37E-0
ft/
.er rate constant in air
.02E 0
ft/
_l transfer rate constant
4.58E-04
ft/
_l mass transfer coefficient
<19E-03 1/:
7.9375
2.2677 f
CONTAMINANT REMOVAL
concentration 4.50E+00 ug/L
concentration 2.33E-03 ug/L
removed 9.9
;ontam nant removed`- 5.05E- 04 b f t- . dale
Lt .on in airstream 4.24E- 04 mg/ f t-3
�ssed per unit of stripping tower cross -sectional area
;sled per unit of tower length