HomeMy WebLinkAbout10036_South End Transit_sub-slab_vapor_sampling_plan-final_120418-OCR
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 18, 2012
Page 1 of 8
April 18, 2012
Mr. Tony Duque
NC Brownfields Program
1646 Mail Service Center, Room 3409-K
Raleigh NC 27699-1646
RE: Post Construction Sub-slab Vapor Sampling Work Plan
Proposed Transit-Oriented, Multi-Family Residential Project, Southline Apartments
140 Remount Road, Charlotte, North Carolina (the “Property”)
PSI Project Number: 0457116
Brownfields Project Number # 10036-06-60
Tony:
The proposed Multi-Family Residential Project located in the northeast quadrant of Remount
Road and Dunavant Street in Charlotte, North Carolina, is currently under construction. To
satisfy the requirements of vapor intrusion monitoring of the proposed structures, and based
on conversations with the Brownfields incident manager and JLB’s environmental attorney,
the following Post Construction Sub-slab Vapor Sampling Plan was developed.
Approved Vapor Mitigation System
In the fall of 2011, JLB Southline, LLC, the current property owner, elected to voluntarily
install passive vapor mitigation systems under all of the buildings on the Property.
The passive vapor mitigation system for each of the proposed structures consist of at least
one sub-slab vapor lateral with a chemical resistant vapor barrier under the building slabs.
There are nineteen (19) proposed structures; eighteen (18) proposed multi-family structures
and one (1) leasing office/club house. The following is a description of the vapor laterals and
the chemical resistant vapor barrier.
On November 10, 2011, the Brownfields Program of Department of Environment and Natural
Resources (DENR) approved the specifications attached as Appendix A for a Vapor
Mitigation System for the buildings on the property. A copy of the email from Will Service of
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 2 of 8
the North Carolina Brownfields Program approving the system design is attached. At the time
of the approval of the Vapor Mitigation System, the Brownfields Program asked for submittal
of work plan for sub slab vapor sample collection.
VI Guidelines and Required Sub Slab Vapor Sampling
As stated above, JLB Southline, LLC voluntarily agreed to install a passive vapor mitigation
system underneath each building on the Property. DENR has recently issued Draft Vapor
Intrusion Guidelines (March 2012) governing when vapor mitigation is required at Brownfields
Properties (the “VI Guidelines”). PSI has considered the step-wise process of the VI
Guidelines to determine which buildings at the Property are required by the Brownfields
Program to be screened for vapor intrusion and then proposed a Sub-Slab Vapor Sampling
Plan only for those buildings where such sampling is required by the VI Guidelines.
Groundwater Screening Levels
PSI has created Table 1 showing groundwater data collected on the Property, as well as
data collected from monitoring wells and sampling points located within 100 feet of any
building footprint on the adjacent property to the east of the railroad tracks. The dashed line
on Figure 2 shows the approximate 100 foot boundary used for consideration in this
analysis. Groundwater data exceeding the Residential Vapor Intrusion Screening Levels are
shown in bold and highlighted in yellow on Table 1. The groundwater samples which have
concentrations exceeding the Acceptable Groundwater Concentrations set fourth in the
January 2012 Residential Vapor Intrusion Screening Levels are indicated on Figure 2 in red.
Soil Analytical Results
From 2006 through February 2012, soil samples have been collected across the Property as
part of various environmental assessments from Phase II Environmental Site Assessments,
underground storage tank removals, and soil sampling a required by the approved
Brownfields Agreement. During these sampling events, soil has been collected and analyzed
for volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), RCRA
Metals, and total petroleum hydrocarbons (TPH). Historical soil sampling locations maps and
soil sample summary tables are provided in Appendix B.
The historical sampling results on the Property indicate that there are no VOCs, SVOCs,
petroleum constituents, and RCRA metals above the inactive hazardous site branch (IHSB)
preliminary residential health-based soil remediation goals ((SRGs) January 2012).
However, the soil samples collected in accordance with the Post-Construction Soil Sampling
Plan dated February 8, 2012 and documented in the Post Construction Sampling Report and
Soil Excavation Work Plan dated March 12, 2012, confirm that concentrations of VOCs and
SVOCs are below the laboratory method detection limits and/or the reported concentrations
are below the IHSB preliminary residential health-based SRGs except for one soil sample
(AREA-1-SS-3). The soil analytical results for soil sample AREA-1-SS-3 indicated that there
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 3 of 8
were no VOCs above laboratory method detection limits. The analytical results did show
SVOCs above the IHSB preliminary residential health-based SRGs. Based these analytical
results, additional soil samples (AREA-1-SS-1-NW-1, AREA-1-SW-1, AREA-1-SW-1A, and
AREA-1-SW-2) were collected within the area. These soil samples were used to delineate
the horizontal extent of the soil impact in the area. The impacted soil within this area is
scheduled to be removed in the next few weeks and disposed of off-site at an approved
disposal facility. Thus, it should not be considered in the analysis of vapor intrusion.
Required Sub-Slab Vapor Sampling
Based on historical groundwater sampling events, three (3) monitoring wells (MW-5, OA-GW-
1, and OA-GW-2) on the northern portion of the subject property and five (5) monitoring wells
(PS-GW-1, PS-GW-2, MW-4, WS-GW-6 and WS-GW-8) located on the northwest and
northeast adjoining properties have documented groundwater impact above the Residential
Vapor Intrusion Groundwater Screening Levels. Based on the VI Guidelines, PSI is proposing
to collect sub-slab vapor samples under the buildings which are within 100-feet of
groundwater impacts exceeding the Residential Vapor Intrusion Groundwater Screening
Levels.
Based on the above mentioned, criteria six (6) of the nineteen (19) proposed structures will
have sub-slab vapor samples collected in accordance with the VI Guidelines. The buildings
outlined in red on Figure 1 indicate the buildings from which sub-slab vapor samples will be
collected.
Sub Slab Sampling Procedures
PSI is proposing to collect a sub-slab vapor sample from each of the passive vapor mitigation
systems installed under the identified structures on Figure 1. One sub-slab vapor sample will
be collected from each building system seven to ten days after the installation of the
foundation slab for the structure is completed. The sub-slab samples will be collected from
the sampling tube installed along the vapor lateral. Each vapor sample will be collected in a
laboratory provided air canister (Summa®) equipped with a 3-hour sampling regulator. Each
sampling canister will be equipped with a vacuum gauge.
Each of the Summa® canisters will be attached to the sub-slab vapor sampling tubing via the
inlet of the sampling regulator. Once the Summa® canister is connected to the sampling
tubing the valve on the canister will be opened and the start time and initial vacuum will be
documented. After the three hours and/or the vacuum on the Summa® canister is below 10-
inches of mercury, the vacuum reading and completion time will be documented. The
canister valve will be closed and the sampling tube will be disconnected from the sampling
regulator. The canister will be labeled and placed into a shipping container and shipped to a
North Carolina certified laboratory for analysis. The process will be repeated for each sub-
slab vapor mitigation system sampled. It should be noted that the above vapor sampling
procedure does not call for the use of a helium tracer gas, which deviates from the NCDENR
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 4 of 8
vapor intrusion sub-surface vapor sampling protocol. This deviation is based on several
items:
The vapor sampling port is not a vertical sampling port installed through the building
slab. It is a horizontal sampling port that was installed during the installed of the sub-
slab vapor collection piping. With the influent of the sampling point located in the
center of the building (under the slab) and the effluent located on the perimeter of the
building.
In order to determine if the sample point has a short circuit to ambient air; a
containment system would have to be constructed around the perimeter of each
building scheduled for sampling. Since each of the buildings are approximately 60-feet
wide and approximately 100-feet in length this would not be practical or cost effective.
There for the helium portion of the NCDENR vapor sampling protocol has been omitted.
Each of the sub-slab vapor samples will be analyzed for volatile halocarbons by EPA Method
TO-15.
Once the sampling is completed and PSI receives the analytical data, the data will be
compared to the Residential Vapor Intrusion Soil Vapor Screening Levels and a report will be
generated summarizing the laboratory results and providing conclusions and
recommendations regarding the sub-slab sampling results to the Brownfields Program.
If you have any questions regarding this correspondence please feel free to contact me.
Respectfully submitted,
PROFESSIONAL SERVICE INDUSTRIES, INC.
Bryan M. Lucas Cate Landry, PE
Senior Project Manager Department Manager
Paul Wachsmuth, PE (GA)
Principal Consultant
Enclosures
Cc: Mr. Scott Schlosser (via email only, w/encls)
Carol Jones Van Buren, Esq. (via email only, w/encls)
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 5 of 8
TABLE
Table 1: Groundwater Analytical Data Summary (Detected Parameters)
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
8260B -
VOCs
Boring Location Sample ID
Date
Collected
(m/dd/yy)
Sample
Depth
(ft BGS)
2205 Dunavant Street MW-4 1/3/2008 5.7 6.2 ND ND ND 0.64 ND ND 26 ND ND
2205 Dunavant Street PS-GW-1 10/23/2006 1.1 7.4 ND 1 1.8 3.2 ND 1.2 84 5.9 ND
2205 Dunavant Street PS-GW-3 10/23/2006 0.76 J 5.4 ND ND ND 0.82 J ND 1.6 110 17 ND
2235 Hawkins Street MW-5 1/3/2008 0.5 1.7 ND ND ND ND 0.55 2.1 160 ND 1.2
2383 Dunavant Street OA-GW-1 10/20/2006 1.1 ND ND ND ND 0.87 J ND ND ND ND ND
2383 Dunavant Street OA-GW-2 10/20/2006 0.76 J 1.4 0.91 J ND ND ND ND ND 44 10 ND
2321 Dunavant Street MW-3 7/26/2011 ND ND ND ND ND ND ND ND ND ND ND
2321 Dunavant Street MW-3 1/3/2008 ND ND ND ND ND ND ND ND ND ND ND
2300 South Boulevard WS-GW-8 10/23/2006 ND 3.5 ND ND ND ND Nd ND 3 ND ND
2300 South Boulevard WS-GW-6 10/26/2006 ND 31 ND ND ND ND ND ND 3.9 ND ND
7.3 NE 65 20 NE 3,900 3,900 12 1.1 37 44
NOTES
1. Data obtained from Environemntal Assessment Reports provided by Former Property Owner
8. NE = Not established
3. NCDENR = North Carolina Department of Environment and Natural Resources BOLD
6. ND = Not Detected at Method Detection Limits
Southline Multi-Family Residential
140 Remount Road
Charlotte, Mecklenburg County, North Carolina
PSI Project No. 0457116
Analytical Method
4. IHSB = Inactive Hazardous Site Branch
5. VOCs = volatile organic compounds
2. Results reported in µg/L = micrograms per liter
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NCDENR - IHSB Vapor Intrusion Screening Levels Residential - Acceptable
Groundwater Concentrations (February 2012)
Contaminant of Concern
Page 1 of 1
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 6 of 8
FIGURES
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 7 of 8
APPENDIX - A
1
Bryan Lucas
From:Service, Will <will.service@ncdenr.gov>
Sent:Thursday, November 10, 2011 1:42 PM
To:Carol Van Buren; Duque, Tony
Cc:Scott Schlosser; Lucas, Bryan
Subject:RE: Soil Vapor Sampling Method - Southline Site
Carol,
I have reviewed the additional information you sent today; the proposal for sub‐slab vapor sampling to verify the
performance of the sub‐slab venting system, and the design specification for the horizontal spacing of the vapor
collection piping. With this additional information, the “Vapor Mitigation System” proposal for the buildings in question
is approved as written.
The methods for sub‐slab vapor sample collection look reasonable, but we will ask for a sampling work plan submittal
prior to the time sampling is done.
Please contact me if you have any questions. Thanks!
Will
From: Carol Van Buren [mailto:cvanburen@vanburenlaw.com]
Sent: Thursday, November 10, 2011 12:19 PM
To: Service, Will; Duque, Tony
Cc: Scott Schlosser; Bryan M. Lucas
Subject: Fwd: Soil Vapor Sampling Method - Southline Site
See the email from Bryan below regarding the soil vapor sampling. Bryan will be sending you an email
momentarily regarding the justification for a single horizontal pipe under each building. JLB would greatly
appreciate an email from Will stating that the soil vapor specs will be approved with these changes.
Carol
Carol Jones Van Buren, Esq.
Van Buren Law, PLLC
5925 Carnegie Blvd., Suite 530
Charlotte, NC 28209
Email: cvanburen@vanburenlaw.com
Phone: 704/366‐4608
Cell: 704/408‐7368
Fax: 704/625‐3620
Website: www.vanburenlaw.com
PRIVILEGE AND CONFIDENTIALITY NOTICE: This communication (including any attachment) is being sent by or on behalf of a lawyer
or law firm and may contain confidential or legally privileged information. The sender does not intend to waive any privilege,
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including the attorney‐client privilege, that may attach to this communication. If you are not the intended recipient, you are not
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Begin forwarded message:
From: "Lucas, Bryan" <bryan.lucas@psiusa.com>
Date: November 10, 2011 12:10:45 PM EST
To: <cvanburen@vanburenlaw.com>
Subject: Soil Vapor Sampling Method - Southline Site
Will;
It was nice talking with you this morning about the vapor mitigation system for the Southline development project in
Charlotte. As we discussed in the conference call, I am providing you with the proposed methodology for collecting soil
vapor samples from underneath the proposed building slabs.
A sampling tube will be installed along one of the proposed vapor laterals under each building slab. These sample tubes
will be constructed of ¼‐inch inside diameter by 5/16‐inch outside diameter Teflon tubing. The tubing will be installed
along the outside of the proposed vapor lateral so the one end of the tubing is approximately at the center point of the
lateral and the other end will be accessible for sample collection were the vapor laterals connect to the vertical vent
piping.
Seven (7) to ten (10) days following the installation of the building slab, one soil gas sample will be collected from
underneath each building slab utilizing the sub‐slab sample tube (as described below). Each soil gas sample will be
collected using a 6‐liter summa canister with a three hour orifice. The summa canisters will be connected to the effluent
of the sample tubing. This sample method will generate a three‐hour composite soil gas sample from underneath each
building slab. Each of the air samples will be analyzed for volatile organic compounds (VOCs).
If the subslab soil gas sample for a particular building does not show VOCs above screening levels, no further action will
be required for that building. If the subslab soil gas sample detected VOCs above screening levels, PSI will evaluate with
the input of NCDENR if any additional sampling is required or if any of the passive mitigation systems have to be
converted to active systems at that time.
Also, PSI will be sending in a second email its justification for using a single horizontal pipe under each building.
Bryan M. Lucas, CES, CEM
Senior Project Manager/Principal Consultant
Environmental Services
Professional Service Industries, Inc. (PSI)
5021 West WT Harris Boulevard
Charlotte, North Carolina 28269
704.598.2234 x102 (Office)
704.598.2236 (Fax)
3
704.222.0660 (Mobile)
bryan.lucas@psiusa.com
PSI - www.psiusa.com - 125 Offices Nationwide
Environmental Consulting * Geotechnical Engineering
Construction Materials Testing & Engineering * Industrial Hygiene
NDE * Facilities & Roof Consulting * Specialty Engineering & Testing
This e-mail and any attachments are for the sole use of the intended recipient(s) and may contain confidential and/or privileged material. If you have received this e-mail in
error, please contact the sender and delete the material from any computer. You are hereby notified that any unauthorized disclosure, copying, distribution, or use of this
transmitted information is strictly prohibited.
XXXXX-1
SECTION XXXX
VAPOR MITIGATION SYSTEM
PART 1 - GENERAL
1.1 DESCRIPTION
A. This section contains requirements for the installation of a vapor
mitigation system.
B. The purpose of the vapor mitigation system is to prevent potential
intrusion of petroleum and chlorinated vapors from impacted soil and
groundwater into the buildings.
1.2 DEFINITIONS
A. CAULKS AND SEALANTS - those materials which will significantly reduce
the flow of gases through small openings in the building shell.
B. CONDITIONED SPACE - all spaces which are provided with heated and/or
cooled air or which are maintained at temperatures over 50 deg. F during
the heating season, including adjacent connected spaces separated by an
un-insulated component (e.g. basements, utility rooms, garages,
corridors).
C. CONTRACTOR - a building trades professional licensed by the state.
D. DEPRESSURIZATION - a condition that exists when the measured air
pressure is lower than the reference air pressure.
E. ELASTOMERIC - that property of macromolecular material of returning
rapidly to approximately the initial dimensions and shape, after
substantial deformation by a weak stress and release of stress.
F. Mil - 1mil=1/1000 of a meter
G. MITIGATION - The act of making less severe, reducing or relieving.
H. OUTSIDE AIR - air taken from the outdoors and, therefore, not previously
circulated through the system.
I. SOIL DEPRESSURIZATION SYSTEM - a system designed to withdraw air below
the slab through means of a vent pipe and fan arrangement or venting
turbine.
J. SOIL GAS - gas which is always present underground, in the small spaces
between particles of the soil or in crevices in rock. Major natural
constituents of soil gas include nitrogen, water vapor, carbon dioxide,
and (near the surface) oxygen. Contaminants which may be present in the
soil gas include volatile petroleum constituents such as benzene toluene
ethylbenzene and xylenes (BTEX) and chlorinated solvents such as 1,2-
dichloroethene.
K. VAPOR BARRIER – High density polyethylene (HDPE) flexible sheet
material; or other system of materials placed between the soil and the
XXXXX-2
building for the purpose of reducing the flow of soil gas into the
building.
L. VENTILATION - the process of supplying or removing air, by natural or
mechanical means, to or from any space. Such air may or may not have
been conditioned.
1.3 SCOPE OF WORK
A. Subgrade soil shall be excavated to a minimum depth of 4-inches below
the bottom of the ground floor slab and any shallow foundation
components and 12-inch along the vapor laterals. It should be noted that
if impacted soil is encountered during excavation activities of the
vapor mitigation piping, footers, grade beams, and installation of
utilities a qualified hazardous materials specialty contractor will be
required to handle the impacted soil as described in the site soil
management plan.
B. Install a minimum 4-inch thick granular blanket beneath the entire
building slab. The granular blanket may be constructed of coarse sand,
pea gravel, or other self-compacting material having an in-place
hydraulic conductivity of greater than 1 x 10-3 cm/sec.
C. The base of the excavation shall be sloped in accordance with the
grading plan to prevent ponding of water in the subgrade. Therefore, the
thickness of the gravel blanket will vary between 4-inches and 18+
inches.
D. Install vapor recovery piping within the granular blanket. The vapor
recovery piping shall be constructed of 4-inch diameter Schedule 40 PVC
flush threaded well screen. The well screen will be machine slotted with
at least a 0.040 inch slot size, and covered with a geotextile sock.
Vapor recovery piping shall be installed horizontally beneath the
building slab at intervals of no less than one (1) vapor lateral (along
the centerline) per building slab (SEE FIGURE 1). However, in buildings
requiring a split foundation a vapor lateral will be installed along the
centerline of each building slab (SEE FIGURE 2).
E. The vapor recovery piping shall be connected to a common riser, which
shall be run inside each building within a utility corridor. The vapor
recovery riser shall terminate in a vent, which shall extend a minimum
of 2-feet above the top of the building and shall be capped with a
turbine. The vent stack should be installed to meet all of the following
requirements:
(1) be ten feet or more from any window, door, or other opening (e.g.,
operable skylight, or air intake) into conditioned spaces of the
structure,
XXXXX-3
(2) be ten feet or more from any opening into an adjacent building.
The total required distance (ten feet) from the point of discharge to
openings in the structure shall be measured either directly between the
two points or be the sum of measurements made around intervening
obstacles. If the point of discharge is at or below any window, door, or
other opening into conditioned spaces of the structure the total
required distance (ten feet) shall be measured horizontally between the
two points.
F. The passive vapor recovery system should be installed to allow easy
conversion to an active recovery system, if this ever should become
necessary. Conversion of the system to active would require the
installation of a vacuum blower or fan on the vent stack.
G. A vapor barrier, consisting of minimum 10 mil, reinforced HDPE plastic
sheeting shall be installed immediately above the granular blanket and
below the concrete slab. The vapor barrier should extend beneath the
entire building slab.
H. All utility penetrations through the vapor barrier shall be sealed to
the extent possible. Overlapping joints in the vapor barrier shall be
sealed with a butyl rubber, or equivalent sealant.
PART 2 - PRODUCTS
2.1 PERMEABLE BACKFILL MATERIAL
A. Permeable backfill shall consist of self-compacting import soil having a
compacted permeability of no less than 1 x 10-3 cm/sec. Acceptable
materials are:
1. Pea gravel.
2. 57 stone.
2.2 VAPOR BARRIER
A. Vapor barrier membrane material shall consist of minimum 10 mil,
reinforced high density polyethylene (HDPE) sheeting.
B. Acceptable materials are Florprufe™ 120 Vapor Barrier, manufactured by
Grace Construction Products or engineer-approved equivalent.
C. Vapor barrier materials must provide excellent environmental stress
crack resistance, impact strength and high tensile strength including
additives to retard polymer oxidation and UV degradation.
2.3 VAPOR PIPING
A. Horizontal (i.e., slotted) vapor piping shall consist of 4-inch
diameter, Schedule 40 flush-threaded PVC, factory-slotted well screen
(0.040 inch slot size).
B. Horizontal vapor piping shall be wrapped in geotextile fabric (sock).
XXXXX-4
C. Vertical (i.e., non-slotted) vapor piping shall be 4-inch diameter,
Schedule 40 PVC piping or piping approved by local building and/or fire
codes.
D. A 6-inch Schedule 80 PVC will be installed in the building footing to
allow the Vapor Lateral with the sample tubing to pass through the
building footing (See Figure 3).
2.4 SOIL VAPOR SAMPLING TUBE
A. Prior to wrapping the vapor laterals in the geotextile fabric a ¼-inch
inside diameter by 3/8-inch outside diameter Teflon sample tube is to be
installed along each of the vapor laterals.
B. One end of the Teflon tubing will be attached at the midpoint of the
lateral. The sampling tubing will be installed parallel to vapor lateral
and will be terminated approximately 1-foot above the finished grade at
the vapor lateral riser.
C. The Teflon tubing will be fastened to the vapor lateral using nylon
cable ties. The cable ties will be spaced approximately every 18-inches
along the vapor lateral (See Figure 3).
D. Once the sample tubing is installed and secured to the vapor lateral the
vapor lateral will be wrapped in the geotextile fabric (sock).
2.5 CAULKS, SEALANTS and TAPES
A. All caulks and sealants shall be resistant to petroleum and chlorinated
solvent vapors.
B. Acceptable caulks and sealants shall conform with ASTM C920-87 "Standard
Specifications for Elastomeric Joint Sealants" and ASTM C962-86
"Standard Guide for Use of Elastomeric Joint Sealants".
C. All sealant materials and methods of application shall be compatible
with the location, function and material of the surface or surfaces
being sealed.
D. Caulks and sealants shall be applied in accordance with manufacturer’s
directions.
E. Tapes used as a sealant shall be resistant to petroleum and chlorinated
solvent vapors and shall have a permeability of less than 10-6 cm/sec.
PART 3 - EXECUTION
3.1 EXCAVATION
A. Contractor shall excavate soils beneath each building slab to a minimum
depth of 4-inches below the bottom of the slab, and a minimum of 12-
inches in the trenches of the vapor laterals (See Figure 1 & 2)
3.2 INSTALLATION OF PERMEABLE BACKFILL
A. Permeable backfill material shall be installed beneath each building
slab to a minimum depth of 4-inches below the bottom of the slab, and a
XXXXX-5
minimum of 12-inches in the trenches of the vapor laterals (See Figure 1
& 2).
B. The vapor barrier and vapor recovery piping shall be installed within
the backfill material as directed in Sections 3.3 and 3.4.
C. The backfill shall be placed in a controlled manner to avoid crushing of
the vapor recovery piping.
3.3 INSTALLATION OF VAPOR PIPING
A. The vent piping shall be installed within the permeable backfill at
approximately the center of the permeable layer (see Figure 1 and 2).
B. Temporarily cap the ends of the piping during installation to prevent
backfill material from entering the vapor recovery piping.
C. Slotted vent piping shall be installed horizontally throughout the foot-
print of the building area as shown on provided drawings. However, in
the event that grade beams or underground obstructions will present a
barrier to the lateral flow of air between horizontal piping sections,
spacing shall be decreased to allow at least 1 pipe per column line.
D. The lateral vapor piping shall have a minimum slope of 1/8 inch per foot
in order to drain any condensation back to soil beneath the soil gas
retarder. The system shall be designed and installed so that no portion
will allow the excess accumulation of condensation.
E. Vent pipes shall be terminated in locations that will minimize human
exposure to the exhaust air. Locations shall be above the eave of the
roof. To prevent exposure to vented soil vapor, the point of discharge
from vents shall meet all of the following requirements:
1. be ten feet or more from any window, door, or other opening (e.g.,
operable skylight, or air intake) into conditioned spaces of the
structure,
2. Be ten feet or more from any window, door, or other opening (e.g.,
operable skylight, or air intake) into conditioned spaces of the
structure, and (3) be ten feet or more from any opening into an
adjacent building. The total required distance (ten feet) from the
point of discharge to openings in the structure shall be measured
either directly between the two points or be the sum of measurements
made around intervening obstacles. If the point of discharge is at or
below any window, door, or other opening into conditioned spaces of
the structure the total required distance (ten feet) shall be
measured horizontally between the two points.
F. All exposed components of the soil depressurization system shall be
labeled "Soil Gas System" to prevent accidental damage or misuse. Labels
XXXXX-6
shall be on a yellow band, two inches wide and spaced three feet apart
on all components.
G. All vent piping shall be located in compliance with existing and
applicable codes, with regards to clearances from mechanical equipment
and flues and notching of structural members. No vent shall penetrate a
fire wall or party wall.
H. Vent pipes shall be fastened to the structure of the building with
hangers, strapping, or other supports that will adequately secure the
vent material. Plumbing pipes, ducts, or mechanical equipment shall not
be used to support or secure a vent pipe.
I. Supports for vent pipes shall be installed at least every 6 feet on
horizontal runs. Vertical runs shall be secured either above or below
the points of penetration through floors, ceilings, and roofs, or at
least every 8 feet on runs that do not penetrate floors, ceilings, or
roofs or as local/state or federal codes require.
J. Vent pipes shall be installed in a configuration that ensures that any
rain water or condensation within the pipes drains downward into the
ground beneath the slab or soil-gas barrier.
K. The vent pipe shall be capped at the terminus with a minimum 4-inch
diameter, galvanized venting turbine, which is capable of operating in
low-wind conditions. The ventilator shall be a Model PT4A-4”
ventilator, manufactured by WSM Company, or equivalent.
L. Vent pipes shall not block access to any areas requiring maintenance or
inspection. Vents shall not be installed in front of or interfere with
any light, opening, door, window or equipment access area required by
code.
M. Cleaning solvents and adhesives used to join plastic pipes and fittings
shall be as recommended by manufacturer’s for use with the type of pipe
material used in the mitigation system.
3.4 INSTALLATION OF VAPOR BARRIER
A. The vapor barrier shall be installed to form a continuous sheet across
the entire building footprint.
B. All seams of the vapor barrier membrane shall be lapped at least 12
inches or as required by the manufacturer. Seams shall be sealed with
an approved sealant.
C. Where pipes, columns or other objects penetrate the vapor barrier, it
shall be cut and sealed to the pipe, column or penetration.
D. Punctures or tears in the vapor barrier membrane shall be repaired with
the same or compatible material.
XXXXX-7
E. Seal vapor barrier membrane to foundation walls or grade beams at
building perimeter using approved sealant.
F. Avoid extended traffic over vapor barrier to prevent punctures or tears
in the vapor barrier membrane. Any punctures or tears will be repaired
as specified by the manufacturer’s guidelines.
3.5 SEALING OF SLAB PENETRATIONS
A. Small cracks and joints with widths less than 1/16 inch (0.0625") shall
be repaired by the application of an elastomeric material capable of
withstanding at least 25 percent extension and extending at least 4
inches beyond the length and width of the crack.
B. Large cracks and joints with widths larger than 1/16 inch (0.0625")
shall be enlarged to a recess with minimum dimensions of ¼ inch by ¼
inch (0.25" x 0.25") and sealed with an approved caulk or sealant
applied over a sealant backer in accordance with the manufacturer's
recommendations.
C. For utility penetrations, work spaces and large slab openings, such as
at a bath tub drain or a toilet flange, an acceptable method for sealing
the exposed soil shall include fully covering the exposed soil with a
solvent based plastic roof cement or other approved to a minimum depth
of 1 inch. Where voids between masonry foundation walls and the slab
edge are accessible, and are sealed in order to reduce vapor entry, non-
shrinking cementitious material may be used.
D. Any sump located in a conditioned portion of a building, or in an
enclosed space directly attached to a conditioned portion of a building,
shall be covered by a lid. An air tight seal shall be formed between the
sump and lid and at any wire or pipe penetrations.
- - - E N D - - -
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Description
FlorprufeTM 120 is a high performance
vapor barrier with Grace’s
Advanced Bond TechnologyTM that
forms a unique seal to the
underside of concrete floor slabs.
Comprising a highly durable
polyolefin sheet and a specially
developed, non-tacky adhesive
coating, Florprufe 120 seals to
liquid concrete to provide
integrally bonded vapor protection.
Florprufe exceeds ASTM E1745
Class A rating.
Advantages
•Forms a powerful integral seal to
the underside of concrete slabs
•Protects valuable floor finishes
such as wood, tiles, carpet and
resilient flooring from damage
by vapor transmission
•Direct contact with the slab
complies with the latest industry
recommendations
•Remains sealed to the slab even
in cases of ground settlement
•Ultra low vapor permeability
•Durable, chemical resistant
polyolefin sheet
•Lightweight, easy to apply, kick
out rolls
•Simple lap forming with
mechanical fixings or tape
Use
Florprufe 120 is engineered for
use below slabs on grade with
moisture-impermeable or
moisture-sensitive floor finishes
that require the highest level of
vapor protection.
Florprufe complies with the latest
recommendations of ACI
Committees 302 and 360, i.e. for
slabs with vapor sensitive
coverings, the location of the vapor
barrier should always be in direct
contact with the slab1.
The membrane is loose laid onto
the prepared sub-base, forming
overlaps that can be either
mechanically secured or taped.
The unique bond of Florprufe to
concrete provides continuity of vapor
protection at laps. Alternatively, if
a taped system is preferred,
self-adhered Preprufe®Tape can be
used to overband the laps.
Slab reinforcement and concrete
can be placed immediately. Once
the concrete is poured, an integral
bond develops between the
concrete and membrane.
FlorprufeTM 120
Integrally bonded vapor protection for slabs on grade
V apor Barrier Membranes
www.graceconstruction.com
PRODUCT DATA UPDATES TECH LETTERS DETAILS MSDS CONTACTS FAQS
1 ACI 302.1R-96 Addendum
Building wall
Exterior grade at
or below level of
subgrade – slope
away from structure
Footing
Moisture sensitive flooring
Concrete slab
Florprufe
5 in. x 8 in.
open drain rock
Compacted subgrade
Typical Assembly
Expansion board (optional)
Preprufe Tape
Bituthene Liquid
Membrane
Physical Properties: Exceeds ASTM E1745 Class A rating
Property Typical Value Test Method
Color White
Thickness (nominal) 0.5 mm (0.021 in.)ASTM D3767 – Method A
Water Vapor Permeance 0.03 perms ASTM E96 – Method B1
Tensile Strength 68 lbs/in.ASTM E1541
Elongation 300%ASTM D412
Puncture Resistance 3300 gms ASTM D17091
Peel Adhesion to Concrete >4 lbs/in.ASTM D903
1. Test methods that comprise ASTM E1745 standard for vapor retarders
Supply
Florprufe 120
Supplied in rolls 1.2 m x 35 m (4 ft x 115 ft)
Roll area 42 m
2 (460 ft2)
Roll weight 37 kg (81 lbs) approx.
Ancillary Products
Preprufe Tape is packaged in cartons containing 4 rolls that are 100 mm x 15 m (4 in. x 49 ft).
Bituthene Liquid Membrane is supplied in 5.7 L (1.5 gal) pails.
W. R. Grace & Co.-Conn.62 Whittemore Avenue Cambridge, MA 02140
Florprufe is a trademark and Preprufe is a registered trademark of W. R. Grace & Co.-Conn.
We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate and is offered for the users’ consideration, investigationand verification, but we do not warrant the results to be obtained. Please read all statements, recommendations or suggestions in conjunction with our conditions of sale,which apply to all goods supplied by us. No statement, recommendation or suggestion is intended for any use which would infringe any patent or copyright. W. R. Grace & Co.-Conn., 62 Whittemore Avenue, Cambridge, MA 02140. In Canada, Grace Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.
These products may be covered by patents or patents pending. Copyright 2003. W. R. Grace & Co.-Conn. PF-001B Printed in USA 4/03 FA/GPS/2M
Visit our web site at www.graceconstruction.com printed on recycled paper
For Technical Assistance call toll free at 866-333-3SBM (3726).
Installation
Health & Safety
Refer to relevant Material Safety
Data Sheet. Complete rolls should
be handled by 2 persons.
Florprufe 120 can be applied at
temperatures of -4ºC (25ºF) or
above. Membrane installation is
unaffected by wet weather.
Installation and detailing of
Florprufe 120 are generally in
accordance with ASTM E1643-98.
Prepare substrate in accordance
with ACI 302.1R Section 4.1.
Install Florprufe 120 over the
leveled and compacted base. Place
the membrane with the smooth
side down and the plastic liner side
up facing towards the concrete
slab. Remove and discard plastic
liner. End laps should be staggered
to avoid a build up of layers.
Succeeding sheets should be
accurately positioned to overlap
the previous sheet 50 mm (2 in.)
along the marked lap line.
Laps
1. Mechanical fastening method –
To prevent the membrane from
moving and gaps opening, the laps
should be fastened together at 1.0 m
(39 in.) maximum centers. Fix
through the center of the lap area
using 12 mm (0.5 in.) long washer-
head, self-tapping, galvanized
screws (or similar) and allowing
the head of the screw to bed into
the adhesive compound to self-
seal. It is not necessary to fix the
membrane to the substrate, only
to itself. Ensure the membrane
lays flat and no openings occur.
(See Figure 1.) Additional
fastening may be required at
corners, details, etc. Continuity is
achieved once the slab is poured
and the bond to concrete develops.
OR
2. Taped lap method –
For additional security use Grace
Preprufe Tape to secure and seal
the overlaps. Overband the lap
with the 100 mm (4 in.) wide
Preprufe Tape, using the lap line
for alignment. Remove plastic
release liner to ensure bond to
concrete.
Penetrations
Mix and apply Bituthene Liquid
Membrane detailing compound to
seal around penetrations such as
drainage pipes, etc. (See Figure 2
and refer to the Bituthene Liquid
Membrane data sheet, BIT-230.)
Concrete Placement
Place concrete within 30 days. Inspect
membrane and repair any damage
with patches of Preprufe Tape. Ensure
all liner is removed from membrane
and tape before concreting.
Preprufe Tape
Bituthene Liquid
Membrane Florprufe
Figure 2
Figure 1
JLB Partners, LLC
Sub-Slab Vapor Sampling Work Plan,-Charlotte NC
PSI Project No: 0457116
April 13, 2012
Page 8 of 8
APPENDIX - B
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Professional Service Industries, Inc. ● 5021 West W.T. Harris Boulevard, Charlotte, NC 28269 ● Phone 704/598-2234 ● Fax 704/598-2236
JLB Realty LLC. – Southline Development Page 2 of 3
Charlotte, North Carolina
PSI Project Number: 511-326
and groundwater samples were collected and analyzed for volatile organic compounds (VOCs),
semi-volatile organic compounds (SVOCs), and Resource Conservation and Recovery Act
(RCRA) 8 Metals on various parcels of the subject property. The analytical results of the soil
samples collected on the subject site indicated that two areas on the site had concentrations of
total chromium above the Inactive Hazardous Site Branch (IHSB) Soil Remediation Goals (SRGs).
Soil sample OA-SB-2 collected at 2‘ below ground surface had 28 ppm of total chromium; soil
sample RR-SB-3 collected at 2’-4’ below ground surface had 47 ppm of total chromium. At the
time of the sampling event, the SRG for chromium was 27 ppm. Recently, IHSB has created an
SRG for the individual species of chromium. The soil samples where total chromium impact was
present were not laboratory analyzed for the individual species of chromium.
SOIL SAMPLING ACTIVITIES
In order to speciate the chromium present at the site, on September 7, 2011, PSI collected two
(2) soil samples on the subject property in the areas where chromium was formerly detected
above the IHSB SRGs. The soil samples were collected at approximately the same locations
and depths of the original soil samples analyzed. The soil samples were analyzed for total
chromium by Environmental Protection Agency (EPA) Method 6010 and hexavalent chromium
(chromium VI) by EPA Method 7196, The concentration of chromium III is them determined by
subtracting the concentration of hexavalent chromium from total chromium. The approximate
locations of the soil samples are depicted on Figure 1.
Quality Assurance/Quality Control Measures
All field decontamination procedures were performed in general accordance with the NCDENR
standard operating procedures (SOPs) for field activities. The hand auger equipment was
decontaminated using a solution of Alconox with alternate rinses of deionized water and
isopropyl alcohol. Single-use disposable gloves were used for each sampling point to prevent
cross-contamination between sampling locations.
Laboratory analytical procedures were performed by National Environmental Laboratory
Accreditation Conference (NELAC)-certified Con-Test Analytical Laboratory. Con-Test is
located in East Longmeadow, Massachusetts.
SOIL SAMPLING RESULTS
The laboratory analytical results for Soil Sample SB-1-SS-1 2’-4’ indicated the presence of total
chromium at a concentration of 30 milligrams per kilogram (mg/kg). This concentration does
not exceed its IHSB Residential SRG of 24,000 mg/kg. Hexavalent chromium was not detected
above its laboratory method detection limit (LMDL) of 1.3 mg/kg; however, the detection limit
exceeds the ISHB SRG of 0.29 mg/kg.
The laboratory analytical results for the Soil Sample SB-2-SS-1 1.5’-2.5’ indicated the presence
of total chromium at a concentration of 140 mg/kg. Hexavalent chromium was not detected
above its LMDL of 1.3 mg/kg; however, the detection limit exceeds the ISHB SRG of 0.29
mg/kg.
A copy of the laboratory analytical results is included as Attachment A.
JLB Realty LLC. – Southline Development Page 3 of 3
Charlotte, North Carolina
PSI Project Number: 511-326
CONCLUSIONS
Based on the results of the soil analysis, chromium III was not present at concentrations
exceeding its respective IHSB SRG.. Hexavalent chromium was not present in amounts
exceeding the method detection limit (1.3 mg/kg) achievable by the lab.
Elevated detection limits were provided by the lab due to color interference as described in a
letter prepared by Con-Test Analytical Laboratory and provided as an attachment to this letter.
Hexavalent chromium analysis (EPA Method 7196) is a color-based analysis. Per conversation
with Mr. Damboragian of Con-Test, lower detection limits for hexavalent chromium are not
achievable for the suspect soil at the subject site.
PSI appreciates the opportunity to be of service to you on this project. If you have any
questions, or require additional information, please feel free to contact us at (704) 598-2234.
Sincerely,
PROFESSIONAL SERVICE INDUSTRIES, INC.
FIGURE
North
Project Name: Not to scale, locations are approximate
Proposed Southline Multi-Family Development
Remount Road and Dunavant Street
Charlotte, Mecklenburg County, North Carolina
Project No.: Date:
0511326 September 22, 2011
Figure 1
Chromium Soil Sample Locations Map
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O
C
A
T
I
O
N
Ch
e
r
o
k
e
e
S
o
u
t
h
l
i
n
e
\
T
a
b
l
e
s
P
h
a
s
e
I
I
A
d
d
e
n
d
u
m
2
0
0
6
-
2
0
0
8
.
x
l
s
\
P
r
e
v
i
o
u
s
R
e
p
o
r
t
s
TA
B
L
E
2
MO
N
I
T
O
R
W
E
L
L
C
O
N
S
T
R
U
C
T
I
O
N
CH
E
R
O
K
E
E
S
O
U
T
H
L
I
N
E
T
R
A
N
S
I
T
-
O
R
I
E
N
T
E
D
D
E
V
E
L
O
P
M
E
N
T
SO
U
T
H
B
O
U
L
E
V
A
R
D
A
R
E
A
CH
A
R
L
O
T
T
E
,
M
E
C
K
L
E
N
B
U
R
G
C
O
U
N
T
Y
,
N
O
R
T
H
C
A
R
O
L
I
N
A
Page 1 of 2
Pr
o
p
e
r
t
y
Lo
c
a
t
i
o
n
/
Mo
n
i
t
o
r
W
e
l
l
I
D
Da
t
e
In
s
t
a
l
l
e
d
Da
t
e
W
a
t
e
r
Le
v
e
l
Me
a
s
u
r
e
d
We
l
l
C
a
s
i
n
g
De
p
t
h
(f
e
e
t
B
G
S
)
Sc
r
e
e
n
e
d
In
t
e
r
v
a
l
(f
e
e
t
B
G
S
)
Bo
t
t
o
m
o
f
W
e
l
l
(f
e
e
t
B
G
S
)
Gr
o
u
n
d
S
u
r
f
a
c
e
El
e
v
a
t
i
o
n
(f
e
e
t
)
To
p
-
o
f
-
C
a
s
i
n
g
Ele
v
a
t
i
o
n
(f
e
e
t
)
De
p
t
h
t
o
W
a
t
e
r
(f
e
e
t
B
G
S
)
De
p
t
h
t
o
W
a
t
e
r
(f
e
e
t
B
T
O
C
)
Gr
o
u
n
d
W
a
t
e
r
El
e
v
a
t
i
o
n
(fe
e
t
)
Fr
e
e
P
r
o
d
u
c
t
Th
i
c
k
n
e
s
s
(f
e
e
t
)
C
o
m
m
e
n
t
s
14
0
R
e
m
o
u
n
t
R
o
a
d
(
B
e
l
l
P
r
o
p
e
r
t
y
)
MW
-
1
1
2
/
2
8
/
0
7
1
/
3
/
0
8
15
15
-
3
0
30
74
2
.
8
3
7
4
2
.
1
6
2
0
.
2
8
1
9
.
6
1
7
2
2
.
5
5
N
o
n
e
2
"
P
V
C
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
flush-mount
RR
-
G
W
-
2
1
0
/
1
6
/
0
6
1
0
/
1
8
/
0
6
9
9-
2
4
24
--
--
17
.
1
8
1
8
.
7
3
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
RR
-
G
W
-
4
1
0
/
1
6
/
0
6
1
0
/
1
8
/
0
6
1
4
14
-
2
4
24
--
--
16
.
2
0
1
7
.
9
0
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
RR
-
G
W
-
5
1
0
/
1
6
/
0
6
1
0
/
1
8
/
0
6
1
4
14
-
2
4
24
--
--
18
.
6
7
1
8
.
9
2
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
24
1
5
/
2
4
1
8
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
P
e
g
r
a
m
P
r
o
p
e
r
t
i
e
s
)
PP
-
G
W
-
1
1
0
/
1
6
/
0
6
1
0
/
1
9
/
0
6
9
.
0
9-
2
4
24
.
0
--
--
15
.
8
7
1
6
.
0
7
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
PP
-
G
W
-
3
1
0
/
1
6
/
0
6
1
0
/
1
9
/
0
6
1
6
.
0
16
-
2
6
26
.
0
--
--
13
.
4
3
1
4
.
8
3
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
24
0
1
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
Q
u
a
l
i
t
y
M
a
r
b
l
e
&
G
r
a
n
i
t
e
)
QT
M
-
G
W
-
2
10
/
2
0
/
0
6
1
1
.
6
1
1
.
6
-
2
6
.
6
2
6
.
6
--
--
6.
7
6
6.
7
6
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
23
2
1
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
S
o
u
t
h
e
r
n
C
o
m
f
o
r
t
H
V
A
C
)
MW
-
3
1
2
/
2
8
/
0
7
1
/
3
/
0
8
10
10
-
2
5
25
73
3
.
1
7
7
3
2
.
5
6
1
1
.
4
2
1
0
.
8
1
7
2
1
.
7
5
N
o
n
e
2
"
P
V
C
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
flush-mount
23
0
3
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
O
r
n
a
m
e
n
t
a
l
A
w
n
i
n
g
s
)
OA
-
G
W
-
1
1
0
/
1
6
/
0
6
1
0
/
2
0
/
0
6
9
.
0
0
11
-
2
1
21
--
--
4.
8
0
5.
1
0
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
OA
-
G
W
-
2
1
0
/
1
6
/
0
6
1
0
/
2
0
/
0
6
3
.
6
5
8-
1
8
18
.
0
--
--
3.
8
5
4.
7
0
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
22
3
5
H
a
w
k
i
n
s
S
t
r
e
e
t
(
M
u
r
r
a
y
S
u
p
p
l
y
)
MW
-
5
1
2
/
2
8
/
0
7
1
/
3
/
0
8
8
8-
2
3
23
72
7
.
9
7
7
2
7
.
4
2
7
.
5
8
7.
0
3
7
2
0
.
3
9
N
o
n
e
2
"
P
V
C
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
flush-mount
22
0
5
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
P
r
e
s
s
l
e
y
S
e
r
v
i
c
e
s
)
MW
-
4
1
2
/
2
8
/
0
7
1
/
3
/
0
8
15
15
-
3
0
30
73
2
.
5
8
7
3
1
.
7
7
1
7
.
5
8
1
6
.
7
7
7
1
5
.
0
0
N
o
n
e
2
"
P
V
C
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
flush-mount
PS
-
G
W
-
1
1
0
/
1
8
/
0
6
1
0
/
2
3
/
0
6
1
4
.
7
1
4
.
7
-
2
9
.
7
2
9
.
7
0
--
--
16
.
2
7
1
6
.
9
2
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
PS
-
G
W
-
3
1
0
/
1
8
/
0
6
1
0
/
2
3
/
0
6
1
0
.
8
1
0
.
8
-
2
5
.
8
2
5
.
8
--
--
17
.
7
4
1
8
.
1
9
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
23
0
0
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
W
e
l
d
e
r
s
S
u
p
p
l
y
)
WS
-
G
W
-
1
1
0
/
1
7
/
0
6
1
0
/
1
9
/
0
6
1
9
19
-
3
4
34
--
--
26
.
6
7
2
7
.
3
7
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
WS
-
G
W
-
2
1
0
/
1
7
/
0
6
1
0
/
1
8
/
0
6
2
0
20
-
4
0
40
--
--
28
.
8
6
2
9
.
1
6
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
WS
-
G
W
-
4
1
0
/
1
7
/
0
6
1
0
/
1
9
/
0
6
1
4
14
-
2
4
24
--
--
20
.
5
1
2
2
.
0
1
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
WS
-
G
W
-
5
1
0
/
1
9
/
0
6
1
0
/
2
3
/
0
6
1
6
.
5
1
6
.
5
-
2
6
.
5
2
6
.
5
2
--
--
17
.
8
5
1
9
.
2
5
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
WS
-
G
W
-
6
1
0
/
1
7
/
0
6
1
0
/
2
3
/
0
6
1
9
.
8
1
9
.
8
-
2
9
.
8
2
9
.
8
5
--
--
20
.
1
4
2
0
.
3
9
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
Ch
e
r
o
k
e
e
S
o
u
t
h
l
i
n
e
\
T
a
b
l
e
s
P
h
a
s
e
I
I
A
d
d
e
n
d
u
m
2
0
0
6
-
2
0
0
8
.
x
l
s
\
W
e
l
l
C
o
n
s
t
TA
B
L
E
2
MO
N
I
T
O
R
W
E
L
L
C
O
N
S
T
R
U
C
T
I
O
N
CH
E
R
O
K
E
E
S
O
U
T
H
L
I
N
E
T
R
A
N
S
I
T
-
O
R
I
E
N
T
E
D
D
E
V
E
L
O
P
M
E
N
T
SO
U
T
H
B
O
U
L
E
V
A
R
D
A
R
E
A
CH
A
R
L
O
T
T
E
,
M
E
C
K
L
E
N
B
U
R
G
C
O
U
N
T
Y
,
N
O
R
T
H
C
A
R
O
L
I
N
A
Page 2 of 2
Pr
o
p
e
r
t
y
Lo
c
a
t
i
o
n
/
Mo
n
i
t
o
r
W
e
l
l
I
D
Da
t
e
In
s
t
a
l
l
e
d
Da
t
e
W
a
t
e
r
Le
v
e
l
Me
a
s
u
r
e
d
We
l
l
C
a
s
i
n
g
De
p
t
h
(f
e
e
t
B
G
S
)
Sc
r
e
e
n
e
d
In
t
e
r
v
a
l
(f
e
e
t
B
G
S
)
Bo
t
t
o
m
o
f
W
e
l
l
(f
e
e
t
B
G
S
)
Gr
o
u
n
d
S
u
r
f
a
c
e
El
e
v
a
t
i
o
n
(f
e
e
t
)
To
p
-
o
f
-
C
a
s
i
n
g
Ele
v
a
t
i
o
n
(f
e
e
t
)
De
p
t
h
t
o
W
a
t
e
r
(f
e
e
t
B
G
S
)
De
p
t
h
t
o
W
a
t
e
r
(f
e
e
t
B
T
O
C
)
Gr
o
u
n
d
W
a
t
e
r
El
e
v
a
t
i
o
n
(fe
e
t
)
Fr
e
e
P
r
o
d
u
c
t
Th
i
c
k
n
e
s
s
(f
e
e
t
)
C
o
m
m
e
n
t
s
23
0
0
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
W
e
l
d
e
r
s
S
u
p
p
l
y
)
c
o
n
t
i
n
u
e
d
WS
-
G
W
-
8
1
0
/
1
9
/
0
6
1
0
/
2
3
/
0
6
1
6
.
6
1
6
.
6
-
2
6
.
6
2
6
.
6
0
--
--
18
.
5
3
1
9
.
7
8
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
WS
-
G
W
-
9
1
0
/
1
7
/
0
6
1
0
/
2
3
/
0
6
1
5
.
4
1
5
.
4
-
2
5
.
4
2
5
.
4
4
--
--
19
.
1
3
2
1
.
0
3
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
23
1
6
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
F
o
r
m
e
r
G
e
o
r
g
i
a
C
a
r
o
l
i
n
a
P
r
o
d
u
c
t
s
C
o
m
p
a
n
y
,
I
n
c
.
)
RJ
-
G
W
-
1
1
0
/
1
8
/
0
6
1
0
/
2
3
/
0
6
1
9
.
4
1
9
.
4
-
3
4
.
4
3
4
.
4
--
--
24
.
8
5
2
5
.
3
0
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
RJ
-
G
W
-
2
1
0
/
1
9
/
0
6
1
0
/
2
3
/
0
6
1
4
.
5
1
4
.
5
-
2
9
.
5
2
9
.
5
--
--
20
.
4
5
2
0
.
5
5
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
RJ
-
G
W
-
3
1
0
/
1
9
/
0
6
1
0
/
2
3
/
0
6
1
0
.
9
1
0
.
9
-
2
5
.
9
2
5
.
9
--
--
25
.
8
2
2
6
.
3
2
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
MW
-
1
U
n
k
n
o
w
n
1
0
/
1
8
/
0
6
U
n
k
n
o
w
n
U
n
k
n
o
w
n
2
7
.
5
--
--
24
.
4
24
.
6
4
--
No
n
e
2
"
P
V
C
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
(2
3
1
6
W
e
l
l
)
Abandoned on Sept. 28, 2007
24
0
0
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
F
o
r
m
e
r
M
c
D
o
n
a
l
d
'
s
R
e
s
t
a
u
r
a
n
t
)
MW
-
2
1
2
/
2
8
/
0
7
1
/
3
/
0
8
15
15
-
3
0
30
~
7
4
9
.
0
7
5
1
.
2
4
2
7
.
0
4
2
9
.
2
8
7
2
1
.
9
6
N
o
n
e
2
"
P
V
C
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
above-grade well, ~ 2.2 ft stickup
MD
-
G
W
-
1
1
0
/
1
9
/
0
6
1
0
/
2
0
/
0
6
1
9
.
6
1
9
.
6
-
3
4
.
6
3
4
.
6
--
--
22
.
2
6
2
2
.
7
1
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
MD
-
G
W
-
2
1
0
/
1
9
/
0
6
1
0
/
2
0
/
0
6
1
8
.
4
1
8
.
4
-
3
3
.
4
3
3
.
4
--
--
20
.
8
9
2
1
.
4
9
--
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
MD
-
G
W
-
3
1
0
/
1
9
/
0
6
1
0
/
2
0
/
0
6
1
0
.
2
1
0
.
2
-
2
0
.
2
2
0
.
2
--
--
DR
Y
DR
Y
DR
Y
No
n
e
1
"
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
Abandoned on Nov. 12, 2006
25
0
8
/
2
5
2
2
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
F
o
r
m
e
r
D
r
y
C
l
e
a
n
e
r
a
n
d
G
a
s
S
t
a
t
i
o
n
P
r
o
p
e
r
t
i
e
s
)
MW
-
1
3/
1
6
/
0
5
4
/
5
/
0
5
1
3
.
0
1
3
.
0
-
2
3
.
0
2
3
.
0
--
--
--
15
.
2
2
--
No
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
11
/
3
0
/
0
5
--
--
--
16
.
3
1
--
flush-mount
MW
-
2
3/
1
6
/
0
5
4
/
5
/
0
5
1
2
.
0
1
2
.
0
-
2
2
.
0
2
2
.
0
--
--
--
13
.
9
1
--
No
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
11
/
3
0
/
0
5
--
--
--
13
.
9
9
--
flush-mount
MW
-
3
3
/
1
6
/
0
5
4
/
5
/
0
5
1
4
.
0
1
4
.
0
-
2
4
.
0
2
4
.
0
7
3
7
.
5
6
7
3
7
.
3
7
1
5
.
6
4
1
5
.
4
5
7
2
1
.
9
2
N
o
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
11
/
3
0
/
0
5
17
.
3
9
1
7
.
2
0
7
2
0
.
1
7
flush-mount
1/
3
/
0
8
18
.
6
1
1
8
.
4
2
7
1
8
.
9
5
MW
-
4
1
1
/
2
9
/
0
5
1
1
/
3
0
/
0
5
1
5
.
0
1
5
.
0
-
2
5
.
0
2
5
.
0
--
--
--
15
.
6
1
--
No
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
flush-mount
MW
-
5
1
1
/
2
9
/
0
5
1
1
/
3
0
/
0
5
1
3
.
0
1
3
.
0
-
2
3
.
0
2
3
.
0
7
3
6
.
7
4
7
3
6
.
1
1
1
7
.
5
0
1
6
.
8
7
7
1
9
.
2
4
N
o
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
1/
3
/
0
8
19
.
1
6
1
8
.
5
3
7
1
7
.
5
8
flush-mount
MW
-
6
1
1
/
2
8
/
0
5
1
1
/
3
0
/
0
5
1
3
.
0
1
3
.
0
-
2
3
.
0
2
3
.
0
--
--
--
15
.
8
2
--
No
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
flush-mount
DW
-
1
1
1
/
3
0
/
0
5
1
1
/
3
0
/
0
5
4
0
.
0
4
0
.
0
-
4
5
.
0
4
5
.
0
--
--
--
14
.
6
9
--
No
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
flush-mount
MW
-
1
A
1
0
/
2
1
/
0
4
4
/
5
/
0
5
1
5
.
0
1
5
.
0
-
2
5
.
0
2
5
.
0
--
--
--
14
.
9
8
--
No
n
e
E
x
i
s
t
i
n
g
w
e
l
l
i
n
s
t
a
l
l
e
d
b
y
N
C
D
E
N
R
D
S
C
A
12
/
1
/
0
5
--
--
--
15
.
7
5
--
flush-mount
SB
-
G
W
-
1
1
0
/
1
6
/
0
6
1
0
/
1
8
/
0
6
2
0
20
'
-
3
0
'
30
.
0
--
--
16
.
6
3
1
8
.
7
1
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
.
Abandoned on Nov. 12, 2006
SB
-
G
W
-
2
1
0
/
1
6
/
0
6
1
0
/
1
8
/
0
6
1
7
17
'
-
2
7
'
27
.
0
--
--
21
.
7
8
2
0
.
5
5
--
No
n
e
1
-
i
n
c
h
P
V
C
t
e
m
p
o
r
a
r
y
m
o
n
i
t
o
r
w
e
l
l
.
Abandoned on Nov. 12, 2006
Ele
v
a
t
i
o
n
s
r
e
f
e
r
e
n
c
e
d
t
o
m
e
a
n
s
e
a
l
e
v
e
l
.
C
o
n
s
t
r
u
c
t
i
o
n
d
a
t
a
r
e
g
a
r
d
i
n
g
p
e
r
m
a
n
e
n
t
m
o
n
i
t
o
r
w
e
l
l
s
a
t
2
5
0
8
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
f
o
r
m
e
r
d
r
y
c
l
e
a
n
e
r
s
)
o
b
t
a
i
n
e
d
f
r
o
m
S
h
i
e
l
d
E
n
g
i
n
e
e
r
i
n
g
r
e
p
o
r
t
d
a
t
e
d
J
a
n
.
3
1
,
2
0
0
6
.
Ch
e
r
o
k
e
e
S
o
u
t
h
l
i
n
e
\
T
a
b
l
e
s
P
h
a
s
e
I
I
A
d
d
e
n
d
u
m
2
0
0
6
-
2
0
0
8
.
x
l
s
\
W
e
l
l
C
o
n
s
t
TA
B
L
E
3
SU
M
M
A
R
Y
O
F
S
O
I
L
S
A
M
P
L
I
N
G
R
E
S
U
L
T
S
CH
E
R
O
K
E
E
S
O
U
T
H
L
I
N
E
T
R
A
N
S
I
T
-
O
R
I
E
N
T
E
D
D
E
V
E
L
O
P
M
E
N
T
SO
U
T
H
B
O
U
L
E
V
A
R
D
A
R
E
A
CH
A
R
L
O
T
T
E
,
M
E
C
K
L
E
N
B
U
R
G
C
O
U
N
T
Y
,
N
O
R
T
H
C
A
R
O
L
I
N
A
Page 1 of 4
Pr
o
p
e
r
t
y
Lo
c
a
t
i
o
n
/
Sa
m
p
l
e
I
D
D
a
t
e
14
0
R
e
m
o
u
n
t
R
o
a
d
(
B
e
l
l
P
r
o
p
e
r
t
y
)
RR
-
S
B
-
1
1
0
/
1
6
/
0
6
0
.
2
5
-
2
.
0
3
1
.
3
37
0
ND
-
-
-
-
0
.
0
2
4
N
D
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RR
-
S
B
-
2
1
0
/
1
6
/
0
6
2
-
4
<
1
N
D
N
D
-
-
-
-
N
D
N
D
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RR
-
S
B
-
3
1
0
/
1
6
/
0
6
2
-
4
-
-
-
-
-
-
N
D
N
D
N
D
N
D
0
.
5
1
J
3
0
1
.
8
47 18
0
.
0
8
9
J
0
.
0
4
8
MW
-
1
1
/
3
/
0
8
1
4
-
1
6
-
-
-
-
-
-
N
D
N
D
N
D
N
D
-
-
-
-
-
-
-
-
-
-
-
-
-
-
24
1
5
/
2
4
1
8
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
P
e
g
r
a
m
P
r
o
p
e
r
t
i
e
s
)
PP
-
S
B
-
1
10
/
1
6
/
0
6
4-
6
<
0
.
1
-
-
-
-
0
.
0
5
6
N
D
N
D
N
D
-
-
-
-
-
-
-
-
-
-
-
-
--
PP
-
S
B
-
2
1
0
/
1
6
/
0
6
1
8
-
2
0
<
0
.
1
--
-
-
ND
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
PP
-
S
B
-
3
1
0
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1
8
/
0
6
2
-
4
<
0
.
1
--
-
-
0.
0
6
9
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
24
0
1
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
Q
u
a
l
i
t
y
M
a
r
b
l
e
&
G
r
a
n
i
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e
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QT
M
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B
-
1
1
0
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1
8
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0
6
2
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4
<
1
--
-
-
0.
0
2
5
N
D
N
D
N
D
--
-
-
-
-
-
-
------
QT
M
-
S
B
-
2
1
0
/
1
8
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0
6
2
-
4
<
1
--
-
-
ND
N
D
N
D
N
D
--
-
-
-
-
-
-
------
23
0
3
D
u
n
a
v
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n
t
S
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t
(
F
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A
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6
1
3
3
1
.
3
--
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N
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N
D
N
D
N
D
0.
5
7
J
9
8
0
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3
6
J
3
.
5
2
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6
N
D
0
.
0
0
3
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J
OA
-
S
B
-
2
1
0
/
1
6
0
6
2
<
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--
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-
N
D
N
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N
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3.
5
3
1
0
0
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9
7
28 6.5
0
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3
3
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0
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23
2
1
D
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n
a
v
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t
(
F
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r
S
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t
h
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n
C
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m
f
o
r
t
H
V
A
C
)
No
s
o
i
l
s
a
m
p
l
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s
c
o
l
l
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c
t
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d
t
o
d
a
t
e
--
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
22
3
5
H
a
w
k
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r
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t
(
F
o
r
m
e
r
M
u
r
r
a
y
S
u
p
p
l
y
)
No
s
o
i
l
s
a
m
p
l
e
s
c
o
l
l
e
c
t
e
d
t
o
d
a
t
e
--
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
22
0
5
D
u
n
a
v
a
n
t
S
t
r
e
e
t
(
F
o
r
m
e
r
P
r
e
s
s
l
e
y
S
e
r
v
i
c
e
s
)
PS
-
S
B
-
1
1
0
/
1
8
/
0
6
2
-
4
<
1
--
-
-
ND
N
D
0
.
0
2
4
N
D
--
-
-
-
-
-
-
-
-
-
-
--
PS
-
S
B
-
2
1
0
/
1
8
/
0
6
1
2
-
1
4
1
.
7
--
-
-
ND
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
PS
-
S
B
-
3
1
0
/
1
8
/
0
6
1
4
-
1
6
1
.
9
--
-
-
ND
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
23
0
0
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
F
o
r
m
e
r
W
e
l
d
e
r
s
S
u
p
p
l
y
)
WS
-
S
B
-
3
1
0
/
1
7
/
0
6
6
-
8
<
1
16
ND
--
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
--
WS
-
S
B
-
4
1
0
/
1
7
/
0
6
6
-
8
<
1
N
D
N
D
--
-
-
-
-
-
-
-
-
--
--
-
-
-
-
-
-
--
WS
-
S
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-
6
1
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1
7
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0
6
8
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1
0
2
.
0
-
-
-
-
0
.
0
6
5
0
.
0
4
5
0
.
0
0
5
3
J
N
D
--
--
--
-
-
-
-
-
-
--
WS
-
S
B
-
7
1
0
/
1
7
/
0
6
8
-
1
0
<
1
N
D
N
D
--
-
-
-
-
-
-
-
-
--
--
-
-
-
-
-
-
--
WS
-
S
B
-
9
1
0
/
1
7
/
0
6
2
-
4
<
1
0
-
-
-
-
0
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1
9
N
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2
.
1
1
1
0
0
.
4
0
J
36 26
0
.
1
2
J
0
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0
3
WS
-
H
A
-
1
0
1
0
/
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7
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6
0
-
2
<
1
-
-
-
-
N
D
N
D
N
D
N
D
-
-
-
-
-
-
-
-
-
-
-
-
-
-
VO
L
A
T
I
L
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R
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A
N
I
C
C
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M
P
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N
D
S
b
y
E
P
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8
2
6
0
B
(
m
g
/
k
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)
METALS
M
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t
h
o
d
s
6
0
1
0
B
/
7
4
7
1
(
m
g
/
k
g
)
Chromium (total)LeadSilverMercury
TP
H
M
e
t
h
o
d
8
0
1
5
B
(m
g
/
k
g
)
Gasoline Range
Organics (GRO)
Diesel Range
Organics (DRO)
Field Screening
Volatile organic compounds -
ppm (PID)
De
p
t
h
(f
e
e
t
B
G
S
)
Barium
Cadmium
Arsenic
Acetone
cis-1-2-Dichloroethene
Trichlorofluoromethane
All Other compounds
Ch
e
r
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k
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S
o
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t
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l
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e
\
T
a
b
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s
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B
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3
SU
M
M
A
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Y
O
F
S
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R
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CH
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CH
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C
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Y
,
N
O
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C
A
R
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I
N
A
Page 2 of 4
Pr
o
p
e
r
t
y
Lo
c
a
t
i
o
n
/
Sa
m
p
l
e
I
D
D
a
t
e
VO
L
A
T
I
L
E
O
R
G
A
N
I
C
C
O
M
P
O
U
N
D
S
b
y
E
P
A
8
2
6
0
B
(
m
g
/
k
g
)
METALS
M
e
t
h
o
d
s
6
0
1
0
B
/
7
4
7
1
(
m
g
/
k
g
)
Chromium (total)LeadSilverMercury
TP
H
M
e
t
h
o
d
8
0
1
5
B
(m
g
/
k
g
)
Gasoline Range
Organics (GRO)
Diesel Range
Organics (DRO)
Field Screening
Volatile organic compounds -
ppm (PID)
De
p
t
h
(f
e
e
t
B
G
S
)
Barium
Cadmium
Arsenic
Acetone
cis-1-2-Dichloroethene
Trichlorofluoromethane
All Other compounds
23
1
6
S
o
u
t
h
B
o
u
l
e
v
a
r
d
(
F
o
r
m
e
r
G
e
o
r
g
i
a
C
a
r
o
l
i
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a
P
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p
a
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y
,
I
n
c
.
)
RJ
-
S
B
-
1
1
0
/
2
3
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0
6
8
-
1
0
<
1
N
D
N
D
--
--
-
-
--
-
-
-
-
-
-
-
-
-
-
-
-
--
RJ
-
S
B
-
2
1
0
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1
9
/
0
6
2
-
4
<
1
-
-
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-
N
D
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
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-
S
B
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3
1
0
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1
9
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1
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-
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0
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0
5
6
ND
N
D
ND
--
--
--
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--
Ge
r
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g
i
a
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r
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6
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--
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1
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--
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r
o
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1
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24
0
0
S
o
u
t
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B
o
u
l
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v
a
r
d
(
F
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r
m
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r
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o
n
a
l
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s
R
e
s
t
a
u
r
a
n
t
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MD
-
S
B
-
1
1
0
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1
9
/
0
6
2
-
4
<
1
--
-
-
ND
N
D
N
D
N
D
--
-
-
-
-
-
-
-
-
-
-
--
MD
-
S
B
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2
1
0
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1
9
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0
6
2
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4
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1
--
-
-
0.
1
2
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
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-
S
B
-
3
1
0
/
1
9
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0
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2
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4
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1
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-
0.
0
6
2
N
D
N
D
N
D
--
--
--
-
-
-
-
-
-
--
25
0
8
/
2
5
2
2
S
o
u
t
h
B
o
u
l
e
v
a
r
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(
F
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m
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r
y
C
l
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a
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a
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G
a
s
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t
a
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p
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)
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0
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0
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2
N
D
N
D
N
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--
--
--
-
-
-
-
-
-
--
NC
D
E
N
R
U
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T
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e
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t
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t
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8
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7
8
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8
4
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2
7
2
7
0
N
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N
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NC
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m
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4
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4
44
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2
4
,
0
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6 270 78
4
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6
EP
A
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g
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9
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3
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1
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5
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1
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1
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6
Na
t
u
r
a
l
l
y
O
c
c
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r
r
i
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g
M
e
t
a
l
s
C
o
n
c
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n
t
r
a
t
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o
n
4 -
M
e
a
n
--
-
-
-
-
-
-
-
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-
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4
.
8
2
9
0
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3
3
1
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0
8
1
Na
t
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c
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g
M
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s
C
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n
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n
t
r
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4 -
R
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e
--
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0
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1
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4
Tr
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Page 3 of 4
Pr
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Sa
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6
V
a
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s
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D
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t
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n
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m
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t
mg
/
k
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=
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a
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s
p
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l
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a
m
1 -
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D
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m
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a
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t
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c
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t
r
a
t
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o
n
BG
S
=
B
e
l
o
w
g
r
o
u
n
d
s
u
r
f
a
c
e
2 -
N
C
D
E
N
R
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n
a
c
t
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v
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H
a
z
a
r
d
o
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B
r
a
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c
h
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e
m
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d
i
a
t
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o
n
G
o
a
l
(
R
G
)
ND
-
N
o
t
D
e
t
e
c
t
e
d
a
t
M
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t
h
o
d
D
e
t
e
c
t
i
o
n
L
i
m
i
t
3 -
E
P
A
R
e
g
i
o
n
9
P
r
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l
i
m
i
n
a
r
y
R
e
m
e
d
i
a
t
i
o
n
G
o
a
l
NE
=
N
o
t
e
s
t
a
b
l
i
s
h
e
d
Re
s
u
l
t
s
s
h
o
w
n
i
n
b
o
l
d
e
x
c
e
e
d
R
G
l
e
v
e
l
s
o
r
S
o
i
l
-
G
r
o
u
n
d
w
a
t
e
r
C
l
e
a
n
u
p
L
e
v
e
l
,
w
h
e
r
e
a
p
p
l
i
c
a
b
l
e
-
-
=
N
o
t
A
n
a
l
y
z
e
d
All Other Compounds
Indeno(1,2,3,-od)pyrene
De
p
t
h
(f
e
e
t
B
G
S
)
Fluorene
Chrysene
Benzo(k)fluoranthene
Anthracene
Benzo(g,h,l)perylene
Benzo(b)fluoranthene
Benzo(a)pyrene
Benzo(a)anthracene
Acenaphthene
VPH/EPH MADEP Methods (mg/kg)Extractable Petroleum Hydrocarbons (All Ranges)Pyrene
Naphthalene
SE
M
I
-
V
O
L
A
T
I
L
E
O
R
G
A
N
I
C
C
O
M
P
O
U
N
D
S
/
P
O
L
Y
C
Y
C
L
I
C
A
R
O
M
A
T
I
C
H
Y
D
R
O
C
A
R
B
O
N
S
Me
t
h
o
d
8
2
7
0
(
m
g
/
k
g
)
Volatile Petroleum Hydrocarbons (All Ranges)Phenanthrene
Fluoranthene
2-Methylnaphthalene
Dibenzo(a,h)anthracene
Ch
e
r
o
k
e
e
S
o
u
t
h
l
i
n
e
\
T
a
b
l
e
s
P
h
a
s
e
I
I
A
d
d
e
n
d
u
m
2
0
0
6
-
2
0
0
8
.
x
l
s
\
S
o
i
l
s
-
S
V
O
C
s
TABLE 3
SUMMARY OF SOIL SAMPLING RESULTS - UST CLOSURES
CHEROKEE SOUTHLINE TRANSIT-ORIENTED DEVELOPMENT
SOUTH BOULEVARD AREA
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA Page 4 of 4
Property
Location /
Sample ID Date
140 Remount Road (Bell Property)
Heating Oil UST Closure
Bell S-1 9/26/07 13.0 <0.1 ND 12 --
Bell S-2 9/26/07 13.0 <0.1 ND 2.2 J --
Bell S-3 9/26/07 13.0 <0.1 ND 2.8 J --
2300 South Boulevard (Former Welders Supply)
Gasoline UST Closure
Welders GT-1 10/2/07 12.0 <1 ND ----
Welders GT-2 10/2/07 12.0 <1 ND ----
Welders GD 10/2/07 2.5 <1 ND ----
Fuel/Heating Oil UST Closure
Welders HO-1 10/2/07 12.0 <1 ND 6.8 J --
Welders HO-2 10/2/07 12.0 <1 ND 8.1 --
2316 South Boulevard (Former Georgia Carolina Products Company, Inc.)
Fuel/Heating Oil UST Closure
Gerogia-Car-1 9/28/07 12.0 <1 ND 4.6 J --
Gerogia-Car-2 9/28/07 12.0 <1 ND 5.1 J --
Gerogia-Car-3 9/28/07 12.0 <1 ND 3.1 J --
2508/2522 South Boulevard (Former Dry Cleaner and Gas Station Properties)
Hydraulic Lift Closure
2522-S-1 9/26/07 8-9 <1 ----ND
2522-S-2 9/26/07 8-9 <1 ----ND
2522-S-3 9/26/07 8.0 <1 ----ND
2522-S-4 9/26/07 11-12 <1 ----67
NCDENR UST Section Action Level 10 10 250
Only detected compounds are shown in table -- = Not Analyzed
mg/kg = Milligrams per kilogram TPH = Total Petroleum Hydrocarbons
BGS = Below ground surface J - Estimated value between Reporting Limit and
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TOTAL PETROLEUM HYDROCARBONS
METHODS 8015/91071 (mg/kg)
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Cherokee Southline\Tables Phase II Addendum 2006-2008.xls\Soil-UST Closure TPH