HomeMy WebLinkAboutII.BC - VIMS and Wood Sealing - Hudson
HEDRA Memorandum
To: HEDRA Commissioners
From: John Hinzman, Community Development Director
Date: August 19, 2019
Item: Authorize Signature of Contract ‐ VIMS ‐ Clean Vapor
Authorize Release of Bid Specifications ‐ Hudson Wood Encapsulation
Action Requested:
Take the following actions related to transfer of the former Hudson Manufacturing Building to
Confluence Development:
1) Authorize Signature of a contract with Clean Vapor to install a Vapor Intrusion
Mitigation System (VIMS). The project was publicly bid in 2017. HEDRA awarded
the contract to Clean Vapor on August 10, 2017.
2) Authorize Release of Wood Encapsulation Bid Specifications. Bids would be due in
September. HEDRA would award the project by the end of September and work would
begin shortly after.
Environmental Obligations
As previously agreed, the City and HEDRA have committed to completing certain
environmental remediation of the site after the transfer of the property. Grant funds cover a
substantial portion of the project, however HEDRA funds would be used to fill gaps.
Vapor Intrusion Mitigation System (VIMS) - A system to actively vent soil vapor.
Floors of the building would be sealed and connected with pipes and blowers to vent off
soil vapor. Includes Supplemental VIMS Work for the removal of floor trusses and
additional rock to provide a level floor in crawl space areas.
Wood Sealing and Encapsulation - Environmentally contaminated wood floors and
trusses would be cleaned and sealed with a specialized paint or gypcrete.
Total Estimated Cost Available Grant
Funding
Net City Cost
VIMS *$813,714 $500,000 *$313,714
Wood Sealing $150,460 $78,000 $72,460
TOTAL Cost $964,174 $578,000 $386,174
* Represents a cost increase of $21,114 over 2017 estimate
Attachments:
VIMS Bid Amount and Plans
Wood Sealing and Encapsulation Bid Specs
BASEMENT BID
Addendum 1 Vapor Intrusion Mitigation System Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority REVISED QUOTE – 7-19-19 BID RESPONSE FORM
Former H.D. Hudson Manufacturing Facility 200 West 2nd Street Hastings, Minnesota
Item No. Item Unit Quantity Price
1 Mobilization/Demobilization LS 1 $ 26,500.00
2
Furnish and Install Vapor Intrusion Mitigation System for the Basement Slab Areas (Sections C, D, F and G) per the revised Plan dated December 18, 2017, Vapor Intrusion Mitigation Plan Design Report. Post-Installation System Performance and Post-Installation System Effectiveness Shall Meet All Minnesota Pollution Control Agency (MPCA) and Minnesota Department of Health (MDH) Vapor Intrusion Mitigation System Criteria.
LS
1
$ 179,034.00
CRAWLSPACE OPTION A BID
Bid $ 204,534.00
Item No. Item Unit Quantity Price
1 Mobilization/Demobilization LS 1 $ 38,160.00
2
Furnish and Install Vapor Intrusion Mitigation System for the Crawlspace Areas (Sections A, B and E) per
the revised Plan dated December 18, 2017, Vapor Intrusion Mitigation Plan Design. Post-Installation System Performance and Post-Installation System Effectiveness Shall Meet All MPCA and MDH Vapor Intrusion Mitigation System Criteria. All crushed stone, DGA and concrete to be supplied by others.
Trenching of stone for the installation of PVC pipe to be supplied by others.
LS
1
$ 182,320.00
CRAWLSPACE OPTION B BID
Bid $ 220,480.00
Item No. Item Unit Quantity Price
1 Mobilization/Demobilization LS 1
N/A
2
Furnish and Install Vapor Intrusion Mitigation System for
the Crawlspace Areas (Sections A, B and E). Design, Post-Installation System Performance &
Post-Installation System Effectiveness Shall Meet All MPCA & MDH Vapor Intrusion Mitigation System Criteria.
LS
1
N/A
Bid Not Bidding
Addendum 1 Vapor Intrusion Mitigation System Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority
Bidder Name Clean Vapor, Inc. Business Address 148 Route 94, PO Box 688
Signed by Blairstown, NJ 07825
Title CEO-Project Director Telephone No. 908-362-5616
Email THatton@CleanVapor.com Fax No. 908-362-5644
If you have questions, contact:
Owner Representative: John Hinzman (Hastings Economic Development and Redevelopment Authority) @ 651-480-2378 JHinzman@hastingsmn.gov
Engineer Representative: David Constant (Stantec) @ 651-255-3960 David.Constant@stantec.com
REFERENCES
Contractor shall provide a list of three (3) vapor intrusion mitigation system installations within the last three (3) years. At least two (2) projects must have a project cost greater than $200,000. Vapor Intrusion Mitigation System Project No.1 Project Name and Location Ponce City Market, Atlanta, Georgia Dates for Project 9/2013-11/2016 Scope of Work See Attachment Final Project Cost $ 389,000.00 Project Contact Jeff Margolin, Principal Contact Telephone Number 678-388-1641 Contact Email JMargolin@ramboll.com
Vapor Intrusion Mitigation System Project No.2
Project Name and Location Univar Site, Wendover Ave. Greensboro, NC Dates for Project 9/2016-Current Scope of Work See Attachment Final Project Cost $ 359,300.00 Project Contact See Attachment
Contact Telephone Number See Attachment Contact Email See Attachment
Vapor Intrusion Mitigation System Project No.3
Project Name and Location Former Energizer Facility, St. Albans, Vermont Dates for Project 12/2014-5/2015 Scope of Work See Attachment Final Project Cost $ 186,838.00 Project Contact Catherine Regan, Senior Engineer (On Short Term Leave) Contact Telephone Number 617-997-2208 Contact Email Catherine.Regan@erm.com Second Contact Nadine Weinberg, Partner Contact Email Nadine.Weinberg@erm.com
Vapor Intrusion Mitigation System Project No. 4
Project Name and Location Solvay Solexis, Thorofare, New Jersey Dates for Project 8/2011-10/2012 Scope of Work See Attachment Final Project Cost $ 377,260.00 Project Contact Mitch Gertz, HSE Compliance Manager Contact Telephone Number 856-853-8119 Contact Email Mitchell.Gertz@Solvay.com
148 Route 94, P.O. Box 688, Blairstown, NJ 07825 / Voice 908.362.5616 / Fax 908.362.5433
VAPOR INTRUSION MITIGATION PLAN DESIGN
for:
Former H.D. Hudson Manufacturing Facility 200 W. 2nd Street, Hastings, Minnesota
Prepared for:
Mr. David Constant, P.G.
Team Leader
Stantec 2335 Highway 36 West St. Paul, MN 55113
Prepared by:
Mr. Thomas Hatton
CEO - Project Director
NRPP #104705 Clean Vapor, LLC 148 Route 94 P.O Box 688 Blairstown, New Jersey 07825
September 2, 2016
Rev 1 March 20, 2017 Rev 2 December 18, 2017 Rev 3 August 12, 2019
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Table of Contents
Table of Contents .......................................................................................................................... 2
1.0 Introduction ........................................................................................................................ 3
2.0 Diagnostics .......................................................................................................................... 5
3.0 System Design and Installation ....................................................................................... 13
4.0 Special Tasks .................................................................................................................... 17
5.0 Vapor Guardian 5500 Dynamic Controls and Remote Management ......................... 19
6.0 General Installation Notes ............................................................................................... 21
7.0 System Materials .............................................................................................................. 22
8.0 Administrative and Final Report ................................................................................... 23
9.0 Pictures.............................................................................................................................. 25
Appendix A – Drawings
Appendix B – Equipment Cut Sheets
Appendix C– Liquid Boot Specifications
Front of Building of Concern
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1.0 Introduction
1.1 Background
Clean Vapor, LLC (Clean Vapor) was retained by the City of Hastings, Minnesota to conduct a
building investigation, diagnostic test, and prepare a vapor intrusion mitigation system (VIMS)
design for the Former H.D. Hudson Manufacturing Facility located at 200 West 2nd Street in
Hastings, Minnesota. The building is a three story masonry and wood structure that was
originally constructed in the late 1800’s and over the years has undergone multiple additions.
During that time, the building was used for the manufacturing of metal agricultural spraying
equipment. It is now scheduled to be redeveloped as retail and residential space. The buildings
sub structure can be essentially divided into four main basement sections and three separate
crawlspaces. Above the crawlspaces are damaged wood plank floors that are still in place from
when the building was used as a factory. This planking is scheduled to be removed so the
crawlspaces may be accessed for soil removal which is part of the environmental remediation.
The figure below outlines those building sections; the numbering system shown will be used
throughout the report.
Figure 1 Building Sections Identified
F
B
C
A
E
D
G
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The proposed VIMS has been designed to create a negative pressure field (relative to typical
building pressures at the time of diagnostic testing) under the slab of the building, so that sub
slab vapors in these areas will be unlikely to migrate upwards into the building. Clean Vapor’s
design consists of specifications and drawings that provide details for construction of a Sub Slab
Depressurization System (SSDS). If installed, operated and maintained per specifications, the
SSDS will be able to maintain negative sub slab pressures under reasonably anticipated
conditions and prevent soil borne vapors from entering into the building. The goal of the system
is to create a sub slab negative pressure field with a minimum vacuum field of -0.004 inches of
water column ("w.c.). The industry accepted standard of 0.004 "w.c. as proposed by Sundquist
and Wertz1, will be used as a target level of depressurization.
Because the final state of the HVAC system is currently unknown, the system has been designed
conservatively to take into account HVAC changes; however, if substantial changes are made to
the building or its HVAC system after the SSDS installation, pressure tests should be conducted
by experienced vapor intrusion mitigation professionals to ensure that negative pressures are still
being maintained below the slab under the new conditions. The diagnostic procedures and
mitigation remedies specified in this document comport with the Minnesota Pollution Control
Agency Vapor Intrusion Technical Document, August 2010.
The information in this report including text, photographs and diagrams shall be considered to be
the intellectual property of Clean Vapor, LLC and is intended to facilitate the vapor intrusion
mitigation of 200 West 2nd Street, Hastings, Minnesota. Any reproduction of the content of this
report in part or total for any other purpose is prohibited without the written consent of Clean
Vapor, LLC.
1.2 Building Sections
Building Section A and the north third of the Section D basement are the oldest and original
sections of the building. The basement section was constructed in 1913 and the crawlspace,
Section A was constructed in 1914. The crawlspace has exposed soil and is divided into three
spaces by brick support walls that run east to west the full length of the crawlspace. The brick
walls provide a carrying structurer for the floor jousts that run north to south. Sections B and C
were constructed in 1921. Section B is a crawlspace that also has exposed soil and is divided
into three spaces by brick support walls that run east to west the full length of the crawlspace.
There are also concrete machine pads that arise from the underlying soil to a top elevation that is
flush with the level of the weed floor. The Section C basement has a concrete floor that was
poured over uncompacted indigenous soils. The southwest corner of this basement section has a
slab area that is approximately two feet lower than the rest of the basement. This space has what
1Sundquist, Jon A. Ph.D., Wertz, William E. PhD, Boyd, John H., September 2007, AWMA Symposium, Providence, RI. Sub Slab Depressurization System Performance Evaluation
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appears to be remnants of a large chimney foundation and was nearly full of standing water at
the time of our visit. The southern two-thirds of Section D was constructed in 1921. The sub
slab material is also uncompacted indigenous soils with loose sandy clay and some small stones.
Section E is a rectangular crawlspace that runs north to south and appears to have been
constructed at the time of the 1921 addition. Section F was constructed in 1927. The sub slab
material consisted of moderately compacted native soils. Section G is an addition that was
constructed in 1946 and the sub slab material is sand and small stones. There is also a cut out in
the floor for a Toledo Scale.
2.0 Diagnostics
2.1 Diagnostic Procedures
In accordance with the accepted design proposal and plan for diagnostics dated October 16,
2015, a building investigation and diagnostic testing was performed on February 10-12, 2016.
A total of four (4) 2 5/8 inch diagnostic suction hole transects were drilled throughout the
building. A calibrated shop vacuum was used to apply vacuum to the sub slab material to
simulate vacuum fields. Smaller test holes were drilled through the slabs within the suction
holes’ radii of influence. The motor speed of the vacuum was varied to develop a performance
curve that would enable us to project the airflow characteristics of different blowers. Static
vacuum and airflow measurements were conducted at the suction holes. A micro-manometer
was used to measure pressure differentials at the remote test holes. A vane anemometer was
used to measure airflow that was yielded from the sub slab. The acquired data has been
interpolated to make reasonable assumptions to predict pressure field extension and airflow.
Prior to conducting vacuum field testing, base line pressure differential measurements were
recorded. The average base line pressure differential was approximately +0.006″ w.c. indicating
a significant negative pressure inside the building relative to the underlying soil. The outdoor
temperature during the time while diagnostic testing was conducted ranged between 7 to 12
degrees Fahrenheit and the indoor temperature was approximately 55 degrees indicating a
temperature differential of approximately 40 degrees F. The average pressure differential of
+0.006 that was measured at this building is approximately four times what is normally observed
when there is a 40 degree indoor to outdoor temperature differential. The winds were calm and
relatively nonexistent while the baseline pressure field data was being collected so wind was not
a contributing factor to the large pressure differentials.
Temperature differentials are the single largest driving factor that contributes to vapor intrusion.
Depending on the profile and geometry of the building, wind and barometric pressure
differentials are usually distant second or third place influencing factors. The angular structure of
this building where there are large additions that are perpendicular to the main structure and high
peaked roofs contribute to the building being easily influenced by wind induced pressure
differentials. These features combined with the climate zone temperature differentials that are
inherent to Minnesota where there can be 80 to 90 degrees or more temperature differentials
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from summer to winter make this building a good candidate for the integration of pressure
stabilizing dynamic controls. These controls will provide significant energy savings while
extending the life of the motors because they will only be operating at maximum speeds during
the coldest times of the year.
The results of diagnostic testing are shown in the Diagnostic Data Section of this report. Pictures
of the diagnostics being performed can also be seen in the Pictures section and relevant points
from diagnostics are shown on a drawing in the attached drawings.
2.2 Diagnostic Data
Test hole locations can be found in the attached drawings. All distances are in feet and vacuum
measurements in inches of water column.
2.2.1 Building Section G, Test Suction Point #1
Vacuum Applied (''wc): Baseline 10 5 2.5
Airflow (cfm): - 115 76 51
Test Hole # Distance (ft.) Pressure field extension table begins below this line
V-1 1 0.0088 -2.07 -1.20 -0.67
V-2 5 0.0102 -0.9520 -0.5480 -0.3210
T-1 10 0.0136 -0.5180 -0.3020 -0.2030
T-2 20 0.0151 -0.4100 -0.2340 -0.1548
T-3 30 0.0348 -0.3010 -0.0031 0.0116
T-4 40 0.0317 0.0119 0.0139 0.0138
T-5 50 0.0391 0.0332 0.0332 0.0382
T-6 10 0.0134 -0.8020 -0.4550 -0.2950
T-7 20 0.0096 -0.3440 -0.1956 -0.1278 T-8 25 0.0060 -0.1949 -0.1144 -0.0739
T-9 10 0.0105 -0.8670 -0.5010 -0.3020
T-10 20 0.0060 -0.2740 -0.1708 -0.0974
T-11 30 0.0040 -0.0764 -0.0466 -0.0255
T-12 40 0.0035 -0.0435 -0.0257 -0.0136
T-13 10 0.0099 -0.3730 -0.2200 -0.1202
T-14 20 0.0141 -0.1771 -0.1017 -0.0559
T-15 25 0.0134 -0.1228 -0.0668 -0.0324
T-16 50 0.0001 -0.0165 -0.0095 -0.0050
Average Baseline pressure differential 0.0135″ w.c.
This Space Intentionally Left Blank
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2.2.2 Building Section C, Test Suction Point #2
Vacuum Applied (''wc): Baseline 5.0 2.5
Airflow (cfm): - 128 90
Test Hole # Distance (ft.) Pressure field extension table begins below this line
V-3 1 0.0018 -0.53 -0.2980
V-4 5 0. 0020 -0.4720 -0.2640
T-17 10 0.0023 -0.4693 -0.2580
T-18 20 0.0024 -0.3780 -0.2046
T-19 25 0.0028 -0.3636 -0.1964
T-20 10 0.0043 -0.4660 -0.2560
T-21 20 0.0045 -0.4516 -0.2477
T-22 30 0.0021 -0.4370 -0.2409
T-23 8 0.0023 -0.4670 -0.2630
T-24 10 0.0017 -0.0045 -0.0025
T-25 20 0.0009 -0.0050 -0.0029
T-26 25 0.0011 -0.0053 -0.0029
T-27 10 0.0000 -0.4416 -0.1113
T-28 20 0.0025 -0.3650 -0.2096
T-29 30 0.0006 -0.0951 -0.0700
T-30 40 0.0033 -0.1174 -0.0654
T-31 36 0.0038 -0.2914 -0.1668
T-32 36 0.0046 -0.1886 -0.1071
T-33 36 0.0024 -0.3829 -0.2250
T-34 32 0.0023 -0.4199 -0.2477
Average Baseline pressure differential 0.0023″ w.c.
This Space Intentionally Left Blank
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2.2.3 Building Section D, Test Suction Point #3
Vacuum Applied (''wc): Baseline 24.8 10 5
Airflow (cfm): - 72 48 30
Test Hole # Distance (ft.) Pressure field extension table begins below this line
V-5 1 0.0027 -13.45 -5.9 -3.67
V-6 5 0.0001 -9.70 -4.29 -2.63
T-35 10 0.0003 -9.40 -4.19 -2.56
T-36 20 0.0003 -0.9470 -0.68 -0.1560
T-37 Not Used
T-38 10 0.0003 -0.3370 -0.1653 -0.1187
T-39 20 0.0033 -0.7728 -0.3360 -0.2190
T-40 30 0.0051 -0.0542 -0.0274 -0.0160
T-41 40 0.0072 0.0000 0.0000 0.0000
T-42 10 0.0001 -9.00 -4.60 -2.53
T-43 20 0.0012 -0.5003 -0.2861 -0.1754
T-44 27 0.0011 -0.3661 -0.2155 -0.1324
T-45 10 0.0006 -8.95 -4.45 -2.23
T-46 20 0.0014 -1.22 -0.6227 -0.3250
T-47 29 0.0007 -0.0700 -0.0531 -0.2800
Average Baseline pressure differential 0.0017″ w.c.
This Space Intentionally Left Blank
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2.2.4 Building Section F, Test Suction Point #4
Vacuum Applied (''wc): Baseline 19.7 10 5
Airflow (cfm): - 92 64 43
Test Hole # Distance (ft.) Pressure field extension table begins below this line
V-7 1 -0.0080 -4.06 -2.20 -1.23
V-8 5 -0.0090 -1.1900 -0.6690 -0.3600
T-48 10 0.0100 -0.5500 -0.3300 -0.1834
T-49 20 0.0110 -0.3860 -0.2330 -0.1334
T-50 30 0.0115 -0.3210 -0.1930 -0.1105
T-51 35 0.0120 -0.2970 -0.1768 -0.1000
T-52 10 0.0080 -0.6640 -0.4000 -0.2160
T-53 20 0.0070 -0.1922 -0.1148 -0.0617
T-54 29 0.0075 -0.1805 -0.1090 -0.0588
T-55 10 0.0082 -1.0500 -0.6380 -0.3410
T-56 20 0.0087 -0.5900 -0.3600 -0.1941
T-57 30 0.0075 -0.1395 -0.0815 -0.0425
T-58 40 0.0070 -0.1330 -0.0780 -0.0407
T-59 44 0.0063 -0.1068 -0.0650 -0.3170
T-60 10 0.0097 -0.6020 -0.3530 -0.1975
T-61 20 0.0095 -0.3620 -0.2200 -0.1191
T-62 30 0.0090 -0.2240 -0.1305 -0.0690
T-63 40 0.0080 -0.1578 -0.0911 -0.0461
T-64 50 0.0077 -0.0800 -0.0450 -0.0220
T-40 60 0.0072 -0.0200 -0.0104 -0.0020
T-41 70 0.0001 -0.0040 -0.0006 0.0000
Average Baseline pressure differential 0.0066″ w.c.
2.3 Interpretation of Diagnostics
Pressure fields were determined by evaluating the results of the pressure field testing. The
overall vacuum field extension testing provided data that could be used to develop a model
capable of projecting the negative pressure field that will prevent the upward migration of soil
gases into the occupied space.
Based on the tables in Section 2, radii of influence ranged from 20 to 50 feet throughout the
building sections. Overall, the vacuum field extensions were greater than 40 feet. There were
only a few areas where the vacuum field was truncated by sub slab obstructions. Suction point
locations were based on these observed radii of influence.
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Measurements of the indoor air pressure relative to the outdoor air indicated that under current
building conditions, the building is under a negative load. This indicates that unless active sub
slab vacuum is applied to overcome this building pressure, vapor intrusion will continue to
occur.
2.4 Blower Selection and Suction Point Locations
There will be five (5) mitigation blowers installed on the roof of the building. The locations of
the blowers are indicated on the attached drawings and a typical photo example can be seen in
the Pictures section. Blowers and suction points have been selected and specified based on the
volume of air yield and static pressure readings recorded from the diagnostics testing. The design
objective is to create a negative pressure field with a minimum performance of -0.004" w.c. at
the outer extent of the negative pressure field. When soil is removed from the suction point,
solution channels that were not detected during the diagnostic phase are sometimes discovered.
This can result in greater than expected airflow and decreased static vacuum. It cannot be
projected if or when this may occur but when it does, it is considered to be good because it can
allow the consultant the opportunity to specify a lower vacuum and horsepower blower which
results in the motor operating at greater efficiency and under less load.
After the suction points have been developed, they shall be individually tested using a vapor
blower or calibrated vacuum to simulate the vacuum to be applied by the permanent blower. This
should be done before the permanent blower is mounted to the stand for final activation. Static
vacuum, airflow and the pressure differential at a temporary floor port shall be measured. The
temporary floor port should be located at the projected outer extent of the negative pressure field.
Most of these ports will be mid-way between a suction point that is located on the next column
line up and over. A data set shall be attained at maximum motor speed. The motor speed should
then be reduced until the distant test port measures -0.008" w.c. The second set of static vacuum
and air flow measurements shall be recorded. The temporary ports shall be numbered on the
suction point drawing. This data shall be logged in table format and retained. Once the suction
point performance of all of the suction points within an individual system has been measured and
the extension of the negative pressure field verified, the data should be evaluated to confirm that
the blower that was specified matches the static vacuum and airflow yield potential of the total
system. When evaluating the potential soil gas yields from the crawlspace systems, pressure
differentials shall be measured from the embedded probes that are most distant from the sub
linear suction points. This procedure and the interpretation of the data should be done by a
person who is experienced and skilled in the art of evaluating suction point data and selecting
blowers for optimal performance and energy efficiency. If the system is yielding a greater or less
than anticipated volume of soil gas, the blower shall be changed to a blower in an appropriate
performance range. Once an individual system’s performance has been verified the
manufacturer shall be directed to ship the properly sized blower.
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The blowers for Systems 1 through 5 will be mounted on the flat section of the roof. The
systems’ common riser pipe will penetrate the third story roof and run to the roof mounted
blowers.
The roof mounted blowers will be located directly above, or as close as possible, to roof trusses
and support columns. The location and blower type is noted by a symbol in the System Drawing.
The blower exhaust will be a minimum of two feet above the roofline. The blower exhaust will
be a minimum of twenty feet from windows, doors, air intakes, passive relief vents or any other
openings in the building that cannot be easily repaired. The final location of each blower will be
field verified by the owner and the architect responsible for the project.
An examination of the soil matrix, sub slab permeability mapping data, and experience factors
are all considered when developing these projections. The following graphs show the blower
curves for the fan types to be installed at the site. When systems are dynamically controlled, the
blower curve will change based on applied power to the motor.
2.5 Cincinnati Fan PB-9
Cincinnati Fan Model PB-9 @3,450 RPM 0.75 Horse Power
Rating Point: 5.5″ w.c. @ 280 CFM
This Space Intentionally Left Blank
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2.6 Cincinnati Fan PB-10A
Cincinnati Fan Model PB-10A @3,450 RPM 0.75 Horse Power
Rating Point: 7.0″ w.c. @ 300 CFM
2.7 Cincinnati Fan PB-10A
Cincinnati Fan Model PB-10A @3,450 RPM 0.75 Horse Power
Rating Point: 6.0″ w.c. @ 320 CFM
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3.0 System Design and Installation
3.1 System Layout
Each of the seven targeted building sections will have independent systems. Basement Sections
A and E and Crawlspace Sections D and F each being serviced by a single blower. The table
below displays the targeted applied vacuum and projected soil airflow yields to meet minimum
pressure differential requirements.
Blower System # Section # Fan Model Applied Vacuum ("w.c.)
Projected Airflow (cfm)
# of Suction Points
1 G Cincinnati Fan Model PB-10A 7.0 300 4
2 B Cincinnati Fan Model PB-9 5.5 280 3 3 C Cincinnati Fan Model PB-10A 6.0 320 3
4 A, E Cincinnati Fan Model PB-9 5.5 280 4
5 D, F Cincinnati Fan Model PB-10A 7.0 300 5
3.2 Suction Holes
A total of twenty (20) suction points will be installed. Twelve (13) of the suction points will be
conventional sub slab suction points that draw soil gases from cavities below the slab and seven
(7) of the suction points will be sub liner suction points that draw soil gases from a collection
plenum that is below a sealed spray applied vapor barrier. See Drawing Sheet 3 for the
locations of suction points, mitigation piping and blower locations. To enhance the vacuum field
distribution and limit any disruption to building use, the suction points will be located near
permanent walls or existing support columns. The specific location of the suction holes shall be
agreed upon by Clean Vapor and the building owner’s representative prior to installation. When
drilling suction holes, the procedures listed in the General Installation section shall be followed
to minimize damaging any sub slab utilities.
Approximately 1.5 cubic feet of soil will be removed from each suction point. Clean Vapor is
not responsible for sub slab fill testing and disposal, it is estimated that, five (5) 55 gallon drums
will be required. For the best cost efficiency excavated sub slab soils should be disposed with the
soil that is removed from the crawlspaces.
3.3 System Piping
All horizontal pipe runs between the fans and the first suction hole will be installed with one inch
slope back to a suction hole for each ten feet of horizontal pipe run. All vertical pipe runs will be
installed plumb. All horizontal runs after the first suction hole may be run level. However, in no
case will the piping be installed so as to create a possible water trap in the piping. All piping and
fittings installed, unless otherwise noted or specified, shall be Schedule 40 PVC pipe.
The PVC pipe will be supported at least every six feet of horizontal run and at least every ten
feet of vertical run. All horizontal pipe runs will have a support with an appropriate device
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within two feet of each fitting and a maximum distance between supports of eight feet as per the
National Plumbing Code. Conduit channel with pipe clamps can also be used to support pipe
routed along the ceiling or walls. Pipe cannot be supported by other building piping or ducts.
Swivel ring or standard bolt-type clevis will be used to support pipe
There may be a need to balance airflow and equalize the distribution vacuum throughout the
systems. Inline gate valves shall be installed in each suction point riser pipe for all systems.
The slide ring clamp should be fixed in place with silicone caulk after the system has been
balanced.
3.4 Blower Installation and Start Up
There will be five (5) roof mounted blowers installed. The locations of the blowers are indicated
on the attached drawings and typical photo examples can be seen in the Pictures section.
Blowers were specified based on diagnostic vacuum distribution and airflow measurements as
discussed earlier. When soil is removed from the suction point, solution channels that were not
detected during the diagnostic phase are sometimes discovered. This can result in greater than
expected airflow and decreased static vacuum. After the suction points have been developed
they shall be individually tested using a vapor blower or calibrated vacuum to confirm the
vacuum to be applied by the permanent blower. This should be done before the permanent
blower is mounted to the stand for final activation. If an individual system is yielding a greater
or less than anticipated volume of soil gas, the blower shall be changed to a blower in an
appropriate performance range.
The roof mounted blowers will be located directly above, or as close as possible to; roof trusses,
support columns, or existing engineered curbs. The location and blower type is noted by a
symbol in the System Drawing. The blower exhaust will be a minimum of two feet above the
roofline. The blower exhaust will be a minimum of twenty feet from windows, doors, air intakes
and passive relief vents. The final location of each blower will be field verified by Clean Vapor
prior to installation.
3.5 Roof Penetrations
All roof penetrations must be coordinated with the owner’s representative prior to performing the
work. Clean Vapor will penetrate the roof and provide final roof sealing.
3.6 Sealing
3.6.1 Cracks and Joints
Any visible expansion joints or slab cracks in the areas being mitigated that have a 1/16 inch or
greater opening will be sealed. Cracks will be cleaned with a walk behind rotary wheel device
with a vacuum attachment to capture dust or debris. Cracks that are from concrete faults and
identified expansion joints will be channel key cut prior to sealing using a crack saw fitted with a
dust collecting device. Cracks will be sealed with a gun-grade urethane caulk sealant. Any
www.cleanvapor.com 15
openings into the slab, such as those that may occur around conduit pipe penetrations through the
slab, will be cleaned and sealed with gun-grade urethane caulk. Expansion joints that are greater
than ¼ inch in width or greater than 3/8 inch below the floor surface may require the installation
of backer rod and self-leveling urethane sealant. There are several large floor fissures in Building
Section G as well as an abundance of perimeter floor wall joints and expansion joints that require
sealing. 4th
3.7 Area G Floor Scale
There is also a large Teledo Scale embedded into the floor in Section G. The base of the vault
that houses the scale was not available for inspection at the time of our visit. As part of the fit
out, this scale should be removed and the vault inspected for cracks and any that are observed
sealed. It is also recommended if the scale is not going to be kept for it’s historical value then the
scale shall be removed and the space backfilled with crushed stone and a new slab poured flush
with the level of the existing floor. In Sections D and F almost all of the expansion joints will
require preparation and sealing.
3.8 Blower Wiring
A dedicated breaker should be used for the mitigation blowers. This will prevent the blowers
from being shut off when a circuit is powered down for an unrelated function. Based on the
blower amperage requirements, an electrician will determine the load for each circuit. The panel
location and breaker number will be referenced in the final report and on the system labels. The
electric will be pulled from the nearest available panel or other panel as identified by the building
owner. Accommodating the power requirements of the specified blowers shall be integrated into
the overall building rehabilitation plan.
The electrical contractor will be responsible for providing conduit, wiring and electrical power to
the blowers. When wiring outdoor blowers, the electrical contractor will use outdoor rated
flexible conduit from each switch box to the blower. Wiring from the switch box to the blower
will be approved individual 12 gauge wire. Outdoor rated switch boxes will be attached to the
blower housing.
3.9 Variable Frequency Drives
The radial blowers to be installed will be equipped with Variable Frequency Drives (VFD). The
installation of a VFD allows us to tune the radial blower’s performance to apply the most
effective and efficient vacuum to the suction points in the system. The VFDs also allow for an
incremental and even distribution of voltage during start up or in the event of a power outage.
The VFD will be integrated into the dynamic control and management system and, through a
control logic system, will actively manage the speed of the blowers to ensure that the specified
vacuum fields are maintained. The management system also for provides for onsite and offsite
blower control.
www.cleanvapor.com 16
3.10 Vacuum Indicators
Magnehelics will be installed to indicate the static vacuum generated by each system. To the
extent practicable, the range of the Magnehelics will be selected so that the indicator needle is
close to or just to the right of center on the dial face. The Magnehelics shall be enclosed in a
protective enclosure. The low pressure Magnehelic ports will be connected with 1/4” O.D. rigid
polyethylene tubing to the interior air stream of one riser pipe of each blower system. The
polyethylene tubing should arc to a higher elevation than where it exits the riser pipe before it is
connected with the Magnehelic. This will prevent condensation from running into the
Magnehelic or creating a water trap in the tube. Exposed sections of tubing below drop ceilings
and longer than four inches will be enclosed in rigid conduit. It is recommended that the
Magnehelic panel be located in Section G near where the piping turns up to travel through the
above floors. The exact location of the Magnehelics is at the discretion of Clean Vapor, with
input from the owner’s representative, and should be noted in the final system As Built drawings.
3.11 Fire Stopping
PVC pipes that penetrate fire-rated walls or ceilings shall be protected using intumescent fire
collars and fire-rated caulk. Hilti is the recommended manufacturer of fire stopping products.
3.12 Sampling Ports
Test ports for manually measuring vacuum and airflow shall be installed in each of the riser
pipes at the 60 inch elevation. Ports should be on the right side of the pipe when viewed straight
on when possible. They shall be drilled, taped and plugged using a 3/8-16 x ¾ stainless steel
socket cap screw with a neoprene washer. Soil gas samples may also be collected from these
ports. Permanent sub slab test ports will be installed at various locations throughout the building
for the purpose of measuring sub slab vacuum. The location of these ports will be discussed
prior to installation and shall be shown on the As Built drawings. Two (2) to six (6) ports will be
installed per system; the port can be accessed via a flush mounted 3/4 inch cap head bolt.
3.13 System Labeling
A label will be installed at the disconnect switch next to the fan that says “Active Soil
Depressurization System, Do Not Alter.” The electrical circuit at the panel that is used to control
the fan will be labeled as “Active Soil Depressurization System”. At least every 20 feet of
exposed contaminant vent pipe length will have a label that reads “Active Soil Depressurization
System” attached to the pipe. All labels shall be readable from three feet away.
www.cleanvapor.com 17
4.0 Special Tasks
4.1.1 Sealing and Depressurizing the Crawlspaces
Building Sections A, B and E are constructed over crawlspaces that will require sealing and
depressurization. A crushed stone, perforated pipe and spray applied vapor barrier venting
system has been designed for the relief of these contaminants. As part of the remedial effort, soil
from these areas has been removed using vactor trucks. The space between the crawlspace soil
and the vapor barrier is scheduled to be filled with # 57 stone that will provide permeable
bedding for the collection system and other utility piping associated with the fit out. The stone
gravel bed shall be AASHTO #57 the American Association of State Highway and
Transportation Officials grading system for stone that requires 87 percent of the stone to pass
through a 3/4" sieve, 25-60 percent must pass through ½" sieve and 0-10 percent must pass
through a No. 4 sieve.
The crawlspaces are longitudinally segmented by brick foundation walls into areas that are
approximately 20 feet wide. Twenty feet long 3 x 12 floor joists that are twelve inches on center,
span the distance between the brick wall joist support. In some areas, there are concrete machine
pads that are set in the ground with tops that are flush with the level of the existing floor. It is
planned for the wood joists to be removed by the renovation contractor. All exposed crawlspace
soils shall be covered with Mirafi 500X geotextile fabric before installing the crushed stone
layer.
A contiguous bed of #57 stone shall be installed to within twelve inches of finished floor
elevation. Four-inch perforated PVC pipe shall be embedded in the top twelve inches of the
stone layer to facilitate a conveyance plenum that will run the full length of each crawlspace
section. The top of lateral perforated PVC pipe shall be two to four inches below the vapor
barrier. Maintaining a contiguous pipe and stone bed that forms a collection plenum the entire
length of each crawlspace segment is critical to the function of the system. Individual gate valves
shall be installed in the basement at the point where the collection pipes exit the crawlspace.
Once in the basement, each of the crawlspace riser pipes shall be joined to a common
conveyance pipe that is connected to a roof mounted blower. Sub grade plumbing discharge
pipes will also be installed in the stone.
4.1.2 Water Relief
Simultaneous to the installation of the crushed stone, a perforated 3-inch Schedule 40 water
relief and drainage pipe shall be installed against the down slope wall of each crawlspace section.
The pipe shall rest in a bed of crushed stone above the filter fabric or on top of a one-foot wide
piece of Geovent®. The purpose of the Geovent® is to create a space between the drainage pipe
and the ground where fine soil particles can accumulate without blocking the inflow of water
www.cleanvapor.com 18
into the pipe. In Crawlspace Section B, the dedicated drainage pipes will need to penetrate the
base of two of the longitudinal walls and terminate in the open basement space C. A ball valve
will be located in the basement where the pipe exits the common wall. In Crawlspace Sections A
and E, the individual drainage outflow pipes will exit the common wall of each crawlspace
section into the basement. Each individual pipe will be equipped with a manual ball valve. Down
gradient of the ball valves from each of the four crawlspace water relief valves, the drainage
pipes can be joined to a common water drainage pipe. Since it is not possible to determine if
water will accumulate within the vapor collection system, the water relief component has been
designed with manual valves to drain off accumulated water. In the future, if it is determined that
water accumulation is an inherent occurrence, sensors and electronically actuated valves can be
integrated for automated water relief. Closed sump basins or other mechanisms for discharging
water can be also be integrated if excess groundwater becomes a problem. It is likely that the
water vapor will be carried though the venting system and the moisture exhausted above the
roofline though the blower(s).
Prior to the installation of the Liquid Boot® vapor barrier layer, pressure probe ends shall be
installed in the upper layer of the crushed stone for crawlspaces A, B and E. The probe details
and locations are indicated on the detail drawings. Probe ends on the up gradient side of the
crawlspace slope shall be located at least three feet in from the exterior wall and probe ends on
the down slope end of the crawlspace shall be a minimum of six feet from the exterior
crawlspace wall. All conduit and tubing shall slope up to the sensor box. In Crawlspace Sections
A and B, the tubing and conduit will need to penetrate the longitudinal separation walls. At no
time should sensor tubing or conduit be installed in a manner that would allow for the collection
of water between the sensor and the probe end.
4.1.3 Vapor Collection Plenum
The vapor collection plenum shall consist of #57 stone. A centrally located four inch perforated
PVC pipe shall be embedded in the stone the entire length of the segmented section of crawl
space. The pipe shall have 5/8" holes located at the 4, 6, and 8 o’clock positions with the 6
o’clock set of holes facing down. This will prevent condensation form accumulating in the pipe.
If pipe with the specified hole pattern cannot be locally sourced than 5/8" holes shall be drilled at
the 6 o’clock position at four feet on center. PVC collection pipe that is embed in stone shall be
Schedule 40 PVC ASTM D 2665 pipe. Once the conveyance pipe, stone and pressure differential
probes have been installed, the Liquid Boot vapor barrier process may be installed.
4.1.4 Vapor Barrier (LIQUID BOOT®)
A continuous CETCO Liquid Boot® 60 mil vapor barrier shall be installed between the
AASHTO #57 stone gravel bed and the top coating of three inches of Dense Graded Aggregate
(DGA). The vapor barrier shall be installed by a CETCO licensed applicator. The Liquid Boot®
shall be smoke tested and certified following the installation.
www.cleanvapor.com 19
Liquid Boot is a laminate vapor barrier system consisting of a base layer fabric (T-60) to cover
the 5 inch AASHTO #57 stone base. 60 dry mils of Liquid Boot is then spray applied to the T-
60 fabric layer. A protective layer of G-1000 fabric is then applied directly to the Liquid Boot
layer once cured.
Once the application of the Liquid Boot has been completed , a smoke test shall be conducted by
the Liquid Boot licensed applicator to demonstrate the gas tight properties of the Liquid Boot
application. The Quality Assurance smoke test can be accomplished by blowing the indicator
smoke below the liner through the pipe system that is installed to vent sub liner gases. After a
successful smoke test, the top coating of DGA can then be applied over the G-1000 fabric.
100% of the DGA must be able to pass through a ¾ inch sieve. Once the DGA has been applied,
the top layer of concrete can then be installed. The DGA layer is expected to be approximately 8
inches thick.
The Liquid Boot® vapor barrier shall not be punctured under any circumstances for any reason.
The concrete batch plant shall be contacted in advance to ensure that the concrete delivered is of
sufficient slump to ensure that there is not excess water to be drained off. The structural, onsite
consulting engineer or construction manager shall coordinate this task with the concrete
contractor. Concrete buggies or other heavy equipment cannot cross the vapor mitigation system
without bridging. Laser screeds and concrete pump equipment are permitted providing the
concrete contractor coordinates the placement of equipment with the vapor mitigation contractor.
5.0 Vapor Guardian 5500 Dynamic Controls and Remote Management
Clean Vapor is a certified installer of the Vapor Dynamics, LLC Vapor Guardian 5500™ monitoring and controls panel. This panel offers the owner and consultant the ability to remotely monitor the performance the vapor intrusion mitigation system including sub slab pressure differentials, static system vacuum, and power consumption. This feature will ensure that sub
slab vacuum levels are not breached thus creating a potential sub slab vapor pathway.
The Vapor Guardian 5500™ will electronically notify the consultant in the event of a system
parameter fault. Electronic notifications can be triggered based on sub slab or system static
vacuum set points. The system integrates the use of a 4G Verizon modem for control and data
monitoring. If sufficient signal strength is not achieved at the location of the transmitter, a roof
mounted antenna, which is approximately 12 inches tall, may need to be installed. The exact
location of the monitoring hardware is at the discretion of installation contractor and the owner
and shall be noted in the final system As-Built drawings. The following metrics will be
monitored for each system; power consumption, applied vacuum, vacuum at the outer extent of
the sub slab and sub liner the pressure fields.
The Vapor Guardian 5500TM, in addition to remotely monitoring the system, will also
dynamically control the blower systems. Dynamic controls enable the vapor intrusion mitigation
www.cleanvapor.com 20
system to maintain a constant predetermined sub slab pressure differential that is individually set
for each blower system as part of the electronic management and monitoring system. The system
monitors the sub slab vacuum levels and self corrects for pressure induced changes that may
occur from HVAC operation, exhaust appliances, wind loading and temperature induced indoor
pressure differentials. Section 2.1 discussed the unusual high temperature induced sub slab to
indoor pressure differentials that exist at this building. The convection associated with indoor to
outdoor temperature differentials are the main force that drives vapor intrusion. These conditions
make it a prime candidate for the integration of dynamic controls. Wind induced pressure
differentials at this building will be amplified because of the angularity of the building and high
sloped roofs. This will be more problematic during the winter months when outside air is dense
and temperature differentials are the greatest. The same principles of moving air over a longer
distance that creates the vacuum to induce lift in airplane wings apply to this building. The low
pressures that are induced as air travels over the high pitched roofs will create a series of low
pressure pockets that will vary in intensity with a change in wind speed and direction. Gusts and
the resultant turbulence will create the most sever low pressures. These low pressures are
transferred into the building though the leakage associated with the roof, windows and exhaust
appliance ports. The sub slab and sub liner differential pressure sensors are continually
monitored by a programmable logic controller (PLC) which controls the variable frequency drive
(VFD) to adjust the blower speed to maintain the predetermined sub slab or sub liner vacuum set
point. It is anticipated that a dampening function will need to be applied to the drive algorithm so
blowers do not servo in response to varying wind speeds. The performance data from each
blower is stored for analysis and reporting (if required). All performance metrics are monitored
hourly and an email is sent if a system’s metrics are operating outside of a predetermined range.
This system operates 24/7 and provides the finest energy saving and liability reduction that
technology offers.
www.cleanvapor.com 21
Motor Control
Zone VacuumSensor
Dynamic Control Unit
Pressure Differential Probe Outer extension of vacuum field (permanent test port)
Patented TechnologyVapor Dynamics, LLC
Cloud Based Management with Offsite Control
Local Monitoring and AlarmsGate Valve
Vapor Guardian Control Logic and Monitoring Diagram
6.0 General Installation Notes
All mitigation system components will be installed to facilitate servicing, maintenance and repair
or replacement of other equipment components in or outside the building. Where mounting
heights are not detailed or dimensions not given, system materials and equipment are to be
installed to provide the maximum headroom or side clearance as is possible. The owner’s
representative will be contacted in cases where a conflict exists. All systems, materials and
equipment will be installed level, plumb, parallel or perpendicular to other building systems and
components unless otherwise specified.
Every reasonable precaution shall be made to avoid any damage to existing utilities located
anywhere in the building or those located in or below the slab floor. Detailed blueprints
indicating utility piping in or under the slab are not available. Undocumented sub slab utilities
may alter the scope of work. A metal detecting relay box or another similar instrument should be
used in conjunction with any slab drilling that does not involve wet coring.
All penetrations through the foundation walls and the roof shall be sealed. There will be no
placement of piping or conduit that would inhibit intended use of any areas. No foreign
materials shall be left or drawn into the vapor system piping or fan which might at a later period
interfere with or in any way impair the vapor system performance. The entire system will have
UL or equivalent ratings for both individual components and the entire system as applicable.
www.cleanvapor.com 22
7.0 System Materials
I. Vapor Vent Piping
a. PVC Schedule 40 pipe and fittings ASTM D-2665
i. Hollow Core PVC is not permissible
b. PVC cement clear primer will comply with ASTM F-656
c. PVC cement adhesive will comply with ASTM D-2564
d. 3 and 4 inch Inline PVC slide valves (Valterra Bladex)
II. Piping Supports and Hardware
a. 3", 4" Hanging Pipe Supports
b. Adjustable swivel ring or standard bolt type clevis hangers
c. Adjustable band hangers
d. 3/8" threaded rod
e. 1/2" threaded rod
f. Conduit clamps
g. Assorted bolts, nuts & washers
h. 1 5/8" C- Profile Galvanized Unistrut
i. 13/16" C- Profile Galvanized Unistrut
III. Vapor Barrier
Mirafi 500X Geotextile Fabric
CETCO Liquid Boot
IV. Collection Plenum
V. 4" PVC Pipe ASTM D-2665
VI. Blowers
a. Cincinnati Fan PB-9 (2)
b. Cincinnati Fan PB-10A (3)
VII. Frequency Inverter
a. Mitsubishi FR 800 (5)
VIII. Blower Support Frames
a. 1 5/8" C- Profile Galvanized Unistrut
b. Dura Block Composite roofing blocks DB 10
IX. Visual Pressure Indicator and Protective Enclosure
a. Magnehelics, Dwyer Instruments Inc. Model 2008 (5)
X. Sealing Materials
a. Gun Grade Urethane Caulk (Vulkem 116)
b. Flowable Urethane Caulk (Vulkem 45SSL)
XI. Fire Collars
a. 3″ and 4″ Fire Collars (Hilti)
XII. Remote Monitoring
a. Vapor Guardian 5500 (Vapor Dynamics)
b. 4G Modem
www.cleanvapor.com 23
c. Dwyer Magnesense Differential Pressure Transmitters 4-20 mili amp
d. Dwyer Magnesense Vacuum Sensors Series 668-4 0"- 25" w.c. (5)
e. Dwyer Magnesense MS 121 (5)
Note: Hilti is the suggested manufacturer of fastening products and fire collars
8.0 Administrative and Final Report
8.1 Permits
It is the responsibility of the mitigation contractor to secure any municipal permits. The owner
will need to provide building access for the municipal building inspectors or any other
jurisdictional authority to inspect the relevant components of the SSDS.
8.2 Warranties
The mitigation contractor shall warranty all system components, workmanship, and a sub slab
vacuum level of -0.004" w.c. for a period of one year from the date of system commissioning.
Sub slab vacuum extension values are based on the conditions at the date of the diagnostic
measurements. The client will not incur any cost for warranty work performed during this period.
Fluctuating water tables, sink holes, and other unforeseen sub slab anomalous conditions that
may affect sub slab soil gas channeling after commissioning values have been achieved may be
considered outside of the warranty. Repairing system damage caused by others is not included in
the warranty. Clean Vapor’s warranty does not apply to systems installed by others.
8.3 Final Project Report
The pressure field extension beneath the sub slab created by each SSDS shall be measured with a
digital micro-manometer capable of reading down to 0.0001 inches water column. The slide
valves in the riser pipes shall be adjusted to facilitate maximum vacuum distribution. Static
vacuum measurements for each system will be recorded. All vacuum measurements will be
measured in inches of water column. The exhaust airflow from each blower system shall be
measured, calculated and reported in CFM. Data will be assembled in a pressure field
measurement table.
The final report summarizing remedial activities shall include a summary of remedial activities,
As Built drawings, blower and system performance tables, photo documentation, equipment
warranties and material submittals.
The As Built drawing will be a modification of the original design print and include: all blowers
and suction points, the specific locations of all blowers, including manufacturer, model and
amperage draw, and the locations of piping and connected suction points. The electrical panel
www.cleanvapor.com 24
location and breaker number will also be noted for each blower. The location of all low pressure
gauges will also be on the drawing. The title block will include the final system installation date.
Photo documentation will include at least one picture of the blowers installed, the low pressure
panel, system labels, suction points, relevant sealing, fire stopping, roof penetrations, post-
mitigation vacuum testing and pictures thought to be important by the owner or Stantec.
Warranties and Submittals will include: all blower warranties, performance and wiring
information, and Material “cut sheets”.
The Operations and Maintenance Section will include a table of items to be checked quarterly
along with login information to the Vapor Dynamics terminal. The table will include each
blower numbered in accordance with the As Built drawing, suction points and system static
vacuum. A copy of the final report will be maintained by Clean Vapor, Stantec and the owner.
8.4 Submittals
The mitigation contractor shall provide copies of submittals to Stantec:
I. Pre Work Submittals
a. Copy of N.E.H.A. Radon Proficiency Radon Mitigation Certification
b. Equipment Manufacturer Cut Sheets
II. Post Work Submittals
a. As Built drawings to include all applicable mechanical component locations
b. Final project report
c. OM&M instructions and recommendations
d. Access to Vapor Dynamics remote login terminal
www.cleanvapor.com 39
Appendix A – Drawings
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ACTIVE SOIL DEPRESSURIZATION SYSTEM
FORMER HD HUDSON MANUFACTURING FACILITY
HASTINGS, MN 55033
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362- 5616 Fax. 908 362-5433
1
ACTIVE SOIL DEPRESSURIZATION SYSTEM
FORMER HD HUDSON MANUFACTURING FACILITY
HASTINGS, MN 55033
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362- 5616 Fax. 908 362-5433
2
ACTIVE SOIL DEPRESSURIZATION SYSTEM
FORMER HD HUDSON MANUFACTURING FACILITY
HASTINGS, MN 55033
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362- 5616 Fax. 908 362-5433
3
ACTIVE SOIL DEPRESSURIZATION SYSTEM
FORMER HD HUDSON MANUFACTURING FACILITY
HASTINGS, MN 55033
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362- 5616 Fax. 908 362-5433
4
ACTIVE SOIL DEPRESSURIZATION SYSTEM
FORMER HD HUDSON MANUFACTURING FACILITY
HASTINGS, MN 55033
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362- 5616 Fax. 908 362-5433
5
ACTIVE SOIL DEPRESSURIZATION SYSTEM
FORMER HD HUDSON MANUFACTURING FACILITY
HASTINGS, MN 55033
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362- 5616 Fax. 908 362-5433
6
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ACTIVE SOIL DEPPRESSURIZATION SYSTEM
FORMER HD HUDSON MANFUCATURING FACILITY
1100 FRANK E RODGERS BLVD. SOUTH
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362-5616 Fax. 908 362-5433
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ACTIVE SOIL DEPPRESSURIZATION SYSTEM
FORMER HD HUDSON MANFUCATURING FACILITY
1100 FRANK E RODGERS BLVD. SOUTH
CLEAN VAPOR LLC
P.O. BOX 688, BLAIRSTOWN, NJ 07825
Ph. 908 362-5616 Fax. 908 362-5433
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
BID RESPONSE FORM
Former H.D. Hudson Manufacturing Facility 200 West 2nd Street Hastings, Minnesota Item No.
Item Unit Estimated Quantity
Unit Price
Price
1 Mobilization/Demobilization. LS 1
2 Clean the basement ceiling and joists (Overview Figure Areas C, D and F) and the first-floor ceiling and joists (Overview Figure Areas A, B, C, D, E, F and H).
LS 1
3 Clean the first-floor floor joists (Overview Figure Areas A, B, E and H) with Sika Corporation Sikagard 62 in Oxford Grey. LS 1
4 Remove the hardened tar-like substance from the first-floor concrete flooring (Overview Figure Area G). LS I
5 Seal the basement ceiling and joists (Overview Figure Areas C, D and F) with Sika Corporation Sikagard 62 in Oxford Grey. LS 1
6 Seal the first-floor ceiling and joists (Overview Figure Areas A, B, C, D, E, F and H) with Sika Corporation Sikagard 62 in Oxford Grey. LS 1
7 Seal the first-floor floor joists (Overview Figure Areas A, B, E and H) with Sika Corporation Sikagard 62 in Oxford Grey. LS 1
8 Apply touch up sealant to area impacted by construction work. LS 1
9
Load, haul and dispose of solids/particulates/contaminated materials (e.g. protective clothing, broom, brushes, etc.) as a special waste at a MPCA-approved waste disposal facility.
LB 50
10
Load, haul and dispose of solids/particulates contaminated materials (e.g. protective clothing, broom, brushes, etc.) as a hazardous waste at a MPCA-approved waste disposal facility.
LB 50
11 Load, haul and dispose of liquids as a special waste at a MPCA-approved waste disposal facility. GAL 100
12 Load, haul and dispose of liquids as a hazardous waste at a MPCA-approved waste disposal facility. GAL 100
Total Bid
Bidder Name Business Address
Signed by
Title Telephone No.
Email Fax No.
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
If you have questions, contact:
Responsible Party Representative: John Hinzman (Hastings Economic Development and Redevelopment Authority) @ 651-480-2378
JHinzman@hastingsmn.gov
Engineer Representative: Dave Constant (Stantec) @ 612-712-2031 David.Constant@stantec.com
REFERENCES
Contractor shall provide a list of three (3) significant special projects consisting of the encapsulating wooden ceilings and joints with sealants in the last three (3) years. At least two (2) projects must have a project cost greater than $50,000.
Project No.1
Project Name and Location
Dates for Project Scope of Work
Final Project Cost Project Contact
Contact Telephone Number Contact Email
Project No.2
Project Name and Location
Dates for Project Scope of Work Final Project Cost Project Contact
Contact Telephone Number Contact Email
Project No.3
Project Name and Location Dates for Project Scope of Work Final Project Cost Project Contact Contact Telephone Number Contact Email
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
MANDATORY PRE-BID MEETING
A mandatory pre-bid meeting will be held at the former H.D. Hudson Manufacturing Facility, 200 West 2nd Street, Hastings, Minnesota on September 17, 2019 at 11:00 am to review existing site conditions and access. All questions must be submitted in writing. Verbal statements may not be relied upon and will not be binding or legally effective.
PRE-BID QUESTIONS Bidders are encouraged to submit bid questions via email to David Constant (David.Constant@stantec.com) and Hiedi Waller (Hiedi.Waller@stantec.com) by 4:00 pm on September 19, 2019. Engineer will respond to questions in writing by 4:00 pm on September 20, 2019. The response will be available on the City’s website at www.hastingsmn.gov.
PROJECT TIMELINE
Bids are due by 4:00 pm on September 25, 2019. Bids shall be submitted by email to John Hinzman (JHinzman@hastingsmn.gov). Work shall be awarded by September 26, 2019. Work shall be substantial complete by November 8, 2019 and completed by December 31, 2019.
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
SPECIFICATIONS 1. GENERAL REQUIREMENTS
1.1 Owner: The Owner is Confluence Development LLC.
1.2 Responsible Party: The Responsible Party is the Hastings Economic Development and
Redevelopment Authority.
1.3 Engineer: The Engineer is Stantec Consulting Services Inc.
1.4 City: The City is Hastings, Minnesota.
1.5 Work includes cleaning and sealing the basement ceiling and joists and the first-floor ceiling, joists and floor joists with Sika Corporation Sikagard 62 in Oxford Grey.
1.6 Responsible Party reserves the right to not award all Bid Items.
1.7 Substantial Completion Date: Work shall be substantially completed by November 8, 2019. Work shall be substantially complete when identified surfaces have been cleaned and sealed and sealant surface samples have been submitted to an analytical laboratory.
1.8 Work shall be complete by December 31, 2019.
1.9 Access: All construction access for personnel, equipment and materials shall be through 2nd
Street West, Lock and Dam Road or the access road to the parking area under the Highway 61 Bridge.
1.10 Hours: Work hours are restricted to 7:00 am – 7:00 pm, Monday through Friday.
1.11 Conformance: Unless identified otherwise, all work shall conform to the Minnesota Department of Transportation “Standard Specifications for Construction,” 2018 Edition (MnDOT Spec.) and
the “Materials Lab Supplemental Specifications for Construction” 2018 Edition (MnDOT Mat.).
1.12 Building Services: The building is heated and limited electricity is available.
1.13 Permits: Contractor will be responsible for obtaining and administering all applicable federal,
state and local permits required for cleaning and encapsulating the basement ceiling and joists and the first-floor ceiling and joists. All costs associated with such permits shall be included in the Mobilization/Demobilization Bid Item.
1.14 Retainage: Fifteen percent of the Total Bid Cost shall be retained by the Responsible Party until Contractor has completed any required re-sealant application as outlined in Section 5 below.
1.15 Traffic: Contractor shall provide, erect, maintain and later remove any traffic control measures (i.e. barricades, traffic control devices) necessary to facilitate cleaning and encapsulating the basement ceiling and joists and the first-floor ceiling and joists. All costs associated with traffic control measures shall be included in the Mobilization/Demobilization Bid Item.
1.16 Mobilization/Demobilization: Contractor shall include costs to mobilize/demobilize appropriate equipment and personnel to complete the requested Work.
1.17 Security: The Owner and/or the Responsible Party shall secure the building as necessary to exclude unauthorized access.
1.18 Health and Safety: Contractor shall follow all applicable federal, state and local regulations.
Contractor shall develop a Site Safety and Health Plan (SSHP). Cost for the SSHP shall be included in the Mobilization/Demobilization Bid Item. Contractor is responsible for site safety at all times. Contractor employees shall have completed an Occupational Safety and Health
Administration 40-hour HAZWOPER training course and the 8-hour annual refresher training, as needed. All PPE to be containerized and properly disposed.
1.19 Laboratory Analytical Reports: Available upon request. Summary information is below.
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
1.19.1 1st Floor Ceiling Sample Results: No PCBs were detected in samples collected from the 1st Floor ceiling. Select PAHs (chrysene and/or phenanthrene) were detected at
concentrations up to 39,000 micrograms per kilogram (ug/kg) in areas that were visibly stained. Total lead was detected at concentrations ranging from 23 to 340 parts per million (ppm).
1.19.2 Basement Ceiling Sample Results: Total PCBs were detected (7,400 ug/kg and 7,500 ug/kg). Select PAHs (chrysene, fluoranthene, and/or phenanthrene) were detected at concentrations up to13,000 ug/kg in areas which were visibly stained. Total lead was
detected at concentrations ranging from 24 to 46 ppm.
1.19.3 A summary table of analytical results and figures showing sampling locations are in Attachment A.
1.19.4 The MPCA-approved work plans for the encapsulation are available upon request.
1.20 Protection and Preparation: Take all necessary precautions to adequately protect personnel and property in the areas of Work. Confine dust and debris to immediate areas of work being
performed.
1.21 Scheduling: Notify Owner and City of proposed work schedule, both weekly and daily.
Coordinate operations involving extreme noise and vibration with Owner and City a minimum of 24 hours prior to such operations.
1.22 Vapor Intrusion Mitigation System (VIMS) installation may be occurring (by Others) during the
schedule of this Work. Contractor shall coordinate schedules with the VIMS contractor to minimize conflicts.
1.23 Documentation: Contractor shall provide Engineer and Responsible Party with all permits, receipts, disposal documentation and/or manifests obtained.
1.24 Bonds: Separate Performance and Payment Bonds shall be submitted utilizing EJCDC Form C- 610 and C615 or a similar bond form if approved by Responsible Party. Bid Bonds are not required.
1.25 Insurance
1.25.1 Contractor shall supply statutory worker’s compensation coverage. 1.25.2 Employer’s liability shall be $1,000,000 per employee. 1.25.3 Contractor shall maintain General Liability
i. General Aggregate $1,000,000 ii. Products - Completed Operations Aggregate $1,000,000 iii. Personal and Advertising Injury $1,000,000 iv. Each Occurrence (Bodily Injury and Property Damage) $1,000,000
v. Excess or Umbrella Liability: 1. General Aggregate $1,000,000
2. Each Occurrence $1,000,000
vi. Property Damage liability insurance will provide Explosion, Collapse, and Underground coverages where applicable.
1.25.4 Umbrella excess liability shall be a combined single limit which shall provide excess
liability insurance over Commercial General Liability, Comprehensive Automobile Liability, and Employers Liability.
1.25.5 Automobile Liability: Combined Single Limit - Bodily injury and property damage. All
owned, non-owned, and hired vehicles. $1,000,000
1.25.6 The Contractual Liability coverage shall provide coverage for not less than
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
$1,000,000 for bodily injury for each person and each accident.
1.25.7 The Contractual Liability coverage shall provide coverage for not less than $1,000,000 for property damage for each accident and annual aggregate.
1.25.8 Responsible Party shall be included as additional insured. This coverage shall be primary and noncontributory.
2. CLEANING
2.1 Contractor shall provide labor, materials, equipment and services to clean the basement ceiling (Overview Figure Areas C, D and F) and joists (Overview Figure Areas A, B, E and H) and the first-floor ceiling (Overview Figure Areas A, B, C, D, E, F and H), joists (Overview Figure Areas A, B, C, D, E, F and H) and floor joists (Overview Figure Areas A, B, E and H) to remove loose particles prior to sealing.
2.2 After cleaning, the surfaces of the basement ceiling and joists and the first-floor ceiling, joists and floor joists shall be ready for the application of the Sika Corporation Sikagard 62 in Oxford Grey.
2.3 Cleaning method or methods shall be chosen by Contractor.
2.4 Cleaning shall be paid for on a Lump Sum basis under Bid Items 2 and 3. If multiple methods are proposed, Bidder shall include the costs of all methods in Bid Items 2 and 3.
2.5 Contractor shall provide, erect, maintain and later remove any dust control measures as necessary to avoid the spreading of contaminated dust throughout the building during the cleaning process.
2.6 Particles/solids generated during the cleaning process shall be placed into labeled 55-gallon
drums for later analysis and disposal.
2.7 Liquids generated during the cleaning process shall be placed into labeled 55-gallon drums for later analysis and disposal.
2.8 Other potentially contaminated materials (e.g. protective clothing, broom, brushes, etc.) generated during the cleaning process shall be placed into labeled 55-gallon drums for later analysis and disposal.
2.9 Engineer shall collect samples of the particulates and the liquids for laboratory analyses of polynuclear aromatic hydrocarbons (PAHs; EPA Method 8270D), polychlorinated biphenyls (PCBs; EPA Method 8082A), and lead (EPA Method 6010C) to determine disposal method.
2.10 Contractor shall be responsible for paying the disposal fees for the disposal of the particulates, liquid and other potentially contaminated materials (e.g. protective clothing, broom, brushes, etc.).
3. REMOVAL OF THE EXISTING HARDENED TAR-LIKE SUBSTANCE
3.1 Contractor shall provide labor, materials, equipment and services to remove the existing hardened tar-like substance from the concrete flooring from the first-floor concrete floor in
Overview Figure Area G.
3.2 Contractor shall remove the existing hardened tar-like substance from the concrete flooring from the first-floor concrete floor in Overview Figure Area G.
3.3 Particles/solids generated during the removal of the tar-like substance shall be placed into labeled 55-gallon drum(s) for later analysis and disposal.
3.4 Liquids generated during the removal of the tar-like substance shall be placed into labeled 55-gallon drums for later analysis and disposal.
3.5 Other potentially contaminated materials generated during the removal of the tar-like substance
(e.g. protective clothing, broom, brushes, etc.) shall be placed into labeled 55-gallon drums for later analysis and disposal.
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
3.6 Engineer shall collect samples of the particulates and liquids for laboratory analyses of PAHs (EPA Method 8270D), PCBs (EPA Method 8082A), and lead (EPA Method 6010C) to determine
disposal method.
3.7 Contractor shall be responsible for paying the disposal fees for the disposal of the particulates, liquid and other potentially contaminated materials.
4. SEAL SURFACES
4.1 Contractor shall provide labor, materials, equipment and services to seal the basement ceiling (Overview Figure Areas C, D and F) and joists (Overview Figure Areas A, B, E and H) and the
first-floor ceiling (Overview Figure Areas A, B, C, D, E, F and H), joists (Overview Figure Areas A, B, C, D, E, F and H) and floor joists (Overview Figure Areas A, B, E and H) surfaces.
4.2 Contractor shall protect and dry the sealant coatings; protecting traffic and property upon and in the vicinity of the sealant application; and protect all portions of the building not identified as part of this Work from disfigurement by sealant application.
4.3 Approved sealant is Sika Corporations Sikagard 62 in Oxford Grey.
4.4 Sealant shall be applied per manufacturer’s recommendations. Sealant shall be applied at a sufficient thickness to form a cohesive barrier over the basement ceiling and basement joists and the first-floor ceiling, joists and first-floor floor joists surfaces.
4.5 All visible sides of the basement ceiling, basement joists, first-floor ceiling, joists and first-floor
floor joists surfaces shall be sealed.
4.6 Contractor shall apply sealant in a neat and skillful manner. Apply the coating smoothly and uniformly so no excess sealant collects at any point. Provide a finished surface free of streaks, pitting, wrinkling, or other irregularities.
4.7 If applying sealant with spray equipment, Contractor shall immediately brush it smooth, if
necessary, to provide uniform coverage and to eliminate wrinkling, blistering, and air holes.
4.8 Sealant shall be free of coarse particles, skins, or other foreign materials detrimental to the application or appearance of the material.
4.9 If recommended by the manufacturer, a second coat shall be applied of the sealant. Costs for a second coat (including labor, materials, equipment and services) shall be included in Bid Items 5, 6 and 7.
4.10 If needed, Contractor shall apply supplemental sealant to areas impacted by work of Others.
4.11 Contractor shall assume that no more than 3% of the total area sealed shall require
supplemental sealing to areas impacted by construction work.
4.12 Contractor shall assume that all supplemental sealing will be applied during one mobilization.
4.13 All supplemental sealing shall be applied by December 31, 2019.
4.14 All costs for supplemental sealing including labor, materials, equipment, services and mobilization shall be included in Bid Item 8.
5. SEALANT SURFACE SAMPLING
5.1 One month following sealant application, Engineer shall take wipe samples on the sealed surfaces and submit the samples for laboratory analysis of PCBs, lead, and PAHs.
5.2 Areas receiving supplemental sealant shall not be sampled.
5.3 Lead analytical results shall be compared to the U.S. Department of Housing and Urban
Development clearance lead concentration of 40 micrograms per square foot (40 ug/ft2)
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
“Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing, Office of Healthy Homes and Lead Hazard Control,” Second Edition, July 2012.
5.4 PCBs analytical results shall be compared to the MPCA guidance of 10 micrograms per 100 square centimeters (10 ug/100 cm2) total PCBs per “Responding to PCB Leaks and Spills, Guidance for responding to PCB leaks and spills in Minnesota,” March 2012, w-hw4-48g.
5.5 The PAHs analytical results shall be evaluated for the presence/absence of PAHs.
5.6 Surfaces with lead analytical results greater than 40 ug/ft2; PCBs analytical results greater than 10 ug/100 cm2; and/or analytical results with PAHs present shall be re-sealed at no additional cost to
the Responsible Party.
6 DISPOSAL
6.1 Engineer shall evaluate the laboratory analytical results and determine if the liquids and the
solids/settled particulates are normal waste, special waste and/or hazardous waste.
6.2 Analytical results show that the liquids and/or the solids/particulates are normal waste.
6.2.1 If both the liquids and the solids/particulates are normal waste, the other potentially contaminated materials (e.g. protective clothing, brushes, etc.) shall be treated as normal waste.
6.2.2 Contractor shall load, haul and dispose of the liquids, the solids/particulates, protective clothing, brushes, etc. as normal waste.
6.2.3 Contractor shall dispose of the liquids, the solids/particulates, protective clothing, brushes,
etc. at no additional cost to the Responsible Party.
6.3 Analytical results show that the liquids and/or the solids/particulates are special waste.
6.3.1 If both the liquids and the solids/particulates are special waste, the other potentially
contaminated materials (e.g. protective clothing, brushes, etc.) shall be treated as special waste. 6.3.2 If either the liquids or the solids/particulates is special waste and the other is normal waste,
the other potentially contaminated materials (e.g. protective clothing, brushes, etc.) shall be treated as special waste. 6.3.3 Contractor shall be responsible for completing the required disposal application (including
waste profile sheets if needed) as well as the Dakota County permit disposal approval form (if needed). Cost to complete the disposal application and/or Dakota County form shall be included in Bid Item 9 and/or Bid Item 11.
6.3.4 A copy of the landfill approval at a MPCA-approved waste disposal facility shall be submitted to the Responsible Party and Engineer prior to disposal.
6.3.5 Contractor shall load, haul and dispose of the liquids and/or the solids/particulates.
6.3.6 Cost to load, haul and dispose of the liquids and/or the solids/particulates as special waste shall be included in Bid Item 9 and/or Bid Item 11.
6.3.7 Cost to load, haul and dispose of protective clothing, brushes, etc. as special waste shall be included in Bid Item 9.
6.3.8 Contractor shall pay disposal costs
6.4 Analytical results show that the liquids and/or the solids/particulates are hazardous waste.
6.4.1 If both the liquids and the solids/particulates are hazardous waste, the other potentially contaminated materials (e.g. protective clothing, brushes, etc.) shall be treated as special
waste.
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Encapsulation Project Former H.D. Hudson Manufacturing Facility Hastings Economic Development and Redevelopment Authority Hastings, MN
6.4.2 If either the liquids or the solids/particulates is hazardous waste and the other is normal waste, the other potentially contaminated materials (e.g. protective clothing, brushes, etc.)
shall be treated as hazardous waste.
6.4.3 If either the liquids or the solids/particulates is hazardous waste and the other is special waste, the other potentially contaminated materials (e.g. protective clothing, brushes, etc.)
shall be treated as hazardous waste.
6.4.4 Contractor shall be responsible for completing the required disposal application (including waste profile sheets if needed) as well as the Dakota County permit disposal approval form
(if needed). Cost to complete the disposal application and/or Dakota County form shall be included in Bid Item 10 and/or Bid Item 12.
6.4.5 A copy of the landfill approval at a MPCA-approved waste disposal facility shall be submitted
to the Responsible Party and Engineer prior to disposal.
6.5 Contractor shall load, haul and dispose of the liquids, the solids/particulates and the protective clothing, brushes, etc.
6.6 Cost to load, haul and dispose of the liquids and/or the solids/particulates/protective clothing, brushes, etc. as special waste shall be included in Bid Item 9 and/or Bid Item 11
6.7 Cost to load, haul and dispose of the liquids and/or the solids/particulates/protective clothing, brushes, etc. as hazardous waste shall be included in Bid Item 10 and/or Bid Item 12.
6.8 Contractor shall pay all disposal costs.
7 PAYMENT
7.1 Fifteen percent of the Total Bid Cost shall be retained by the Responsible Party until Contractor has completed any required re-sealant application as outlined in Section 5.
7.2 For all items not bid on a lump sum (LS) basis, quantities shown on the Bid Response Form are estimates only.
7.3 For items bid on a pound (LB) or gallon (GAL) basis, payment shall be based on actual quantities disposed of as documented through waste disposal manifests or other reliable and verifiable means.
7.4 As the Contractor shall be selecting the method(s) to clean the basement ceiling and joists
(Overview Figure Areas C, D and F), the first-floor ceiling and joists (Overview Figure Areas A, B, C, D, E, F and H) and the first-floor floor joists (Overview Figure Areas A, B, E and H), the Responsible Party reserves the right to renegotiate the disposal costs should the actual
quantities generated be more than or equal to double the estimated quantities.
END
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FIGURES
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Overview Figure
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G
M
A
N
A
G
E
M
E
N
T
A
N
D
A
B
A
T
E
M
E
N
T
W
O
R
K
P
L
A
N
HA
S
T
I
N
G
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T
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N
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D
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N
T
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HA
S
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N
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S
,
M
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N
N
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S
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A
193704121
6/30/2016
SHEET NUMBER
DATENO
SURVEY
APPROVED
DESIGNED
DRAWN
PROJ. NO.
REVISION
CHECKED
0 30 60
N
EPA GRANT BOUNDARIES
DAKOTA COUNTY PARCELS (2013)
EXISTING MINOR CONTOURS
EXISTING MAJOR CONTOURS
FI
R
S
T
F
L
O
O
R
S
A
M
P
L
E
S
EJM
EJM
RJB
HAW
FIGURE 2
LEGEND
AREA B
AREA C
EXTERIOR BUILDING WALLS
SAMPLE LOCATION AND DESIGNATION
APPROXIMATE LOCATION OF FIRST FLOOR
FLOORING TO BE REMOVED AND DISPOSED
OFFSITE (ABOVE CRAWL SPACES)
FLOOR SURFACE-1
APPROXIMATE INTERIOR BUILDING WALLS
NOTES:
1. EXISTING FLOOR IS WOOD FLOOR ON
WOOD JOISTS UNLESS DEPICTED OTHERWISE.
2. FLOOR LAYOUT HAS BEEN UPDATED BASED
ON ACTUAL FIELD MEASUREMENTS
APPROXIMATE EXISTING
CONCRETE FLOOR STRUCTURE
APPROXIMATE EXISTING STEEL
PLATES OVER FLOOR
APPROXIMATE EXISTING
PLYWOOD OVER FLOOR
APPROXIMATE EXISTING TILE OVER FLOOR
FORMER H.D. HUDSON
MANUFACTURING FACILITY
AREA A
APPROXIMATE FLOOR STAIN
APPROXIMATE EXISTING CARPET
OFFICE CARPET AND OFFICE PADDING
COMPOSITE SAMPLE APPROXIMATE LOCATIONS
ENLARGEMENT OF APPROXIMATE
EXISTING CARPET AREA C
0 10 20
COMPOSITE SAMPLE AREAS AND DESIGNATIONFS1 COMPOSITE
DR
A
F
T
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>
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C C C C C C C C C C
OH
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OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP
MISSISSIPPI RIVER
2ND ST W
LO
C
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L
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FLOOR SURFACE-8
FS8 SUBSURFACE
FLOOR SURFACE-7
FS7 SUBSURFACE
FLOOR SURFACE-6
FS6 SUBSURFACE
FLOOR SURFACE-5
FS5 SUBSURFACE
DATE OF ISSUANCE
FL
O
O
R
I
N
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M
A
N
A
G
E
M
E
N
T
A
N
D
A
B
A
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,
M
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S
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A
193704121
6/30/2016
SHEET NUMBER
DATENO
SURVEY
APPROVED
DESIGNED
DRAWN
PROJ. NO.
REVISION
CHECKED
0 30 60
N
EPA GRANT BOUNDARIES
DAKOTA COUNTY PARCELS (2013)
EXISTING MINOR CONTOURS
EXISTING MAJOR CONTOURS
SE
C
O
N
D
F
L
O
O
R
S
A
M
P
L
E
S
EJM
EJM
RJB
HAW
FIGURE 3
LEGEND
AREA B
AREA C
EXTERIOR BUILDING WALLS
COMPOSITE SAMPLE AREAS AND
DESIGNATIONFS5
APPROXIMATE LOCATION OF
INTERIOR BUILDING WALLS
APPROXIMATE LOCATION OF EXISTING
CONCRETE FLOOR STRUCTURE
APPROXIMATE LOCATION OF
EXISTING STEEL PLATES OVER FLOOR
NOTES:
1. EXISTING FLOOR SHOULD BE CONSIDERED WOOD
FLOOR ON WOOD JOISTS UNLESS DEPICTED OTHERWISE.
2. FLOOR LAYOUT HAS BEEN UPDATED BASED ON
ACTUAL FIELD MEASUREMENTS.
FORMER H.D. HUDSON
MANUFACTURING FACILITY
AREA A
DR
A
F
T
TA
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m
p
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6
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5
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1
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6
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b
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04
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6
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8
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1
4
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6
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1
2
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4
01
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1
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6
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04
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0
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04
/
0
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1
6
#4
-
R
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P
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04
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0
8
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6
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f
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C
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1
6
Of
f
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d
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g
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06
/
0
2
/
1
6
FL
O
O
R
S
U
R
F
A
C
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-
9
01
/
1
4
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Benzo(b)fluoranthene Benzo(g,h,i)perylene Benzo(k)fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Indeno(1,2,3-cd)pyrene 2-Methylnaphthalene Phenanthrene Pyrene Aroclor 1016, 1221, 1232, 1242, 1248, 1254, 1260, 1262, 1268
NE
5
1
0
0
N
E
1
5
5
0
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2
1
5
5
1
0
0
1
2
0
.
2
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
NE
1
0
0
2
,
0
0
0
N
E
2
0
1
0
0
1
0
0
4
2
0
1
0
0
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
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-
-
-
-
-
-
-
-
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All ND
-
-
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All ND
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All ND
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All ND
-
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1
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=
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Pa
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DRAFT
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>
>>>>>>
>
>
>>>>>>
l l l l l l l l l l l l l l
l
l
l
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>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>
G
G
G
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G
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G
G
G
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G
G
G
G
G
G
G
G
G
G
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G
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G
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G
G
G
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G
G
G
G
G
G
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G
G
G
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G
G
G
G
G
G
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G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G
G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G
E
E
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E
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E
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E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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E
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E
E
E
E
E
E
E
E
E
E
E
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E E E E E E E E E E E E E E
E
E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
E E E
E E
E
E E E E E E E E E E E E E E E E E
E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
E
E
E
E
E
E
E
E
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E
E
E
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E
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E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
E
E
E
E
E E E E E E E E E E E E E E E E E
C C C C C C C C C C
OH
P
OH
P
OH
P
O
H
P
O
H
P
O
H
P
O
H
P
O
H
P
O
H
P
OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP
MISSISSIPPI RIVER
2ND ST W
LO
C
K
A
N
D
D
A
M
R
D
AC
C
E
S
S
R
D
T
O
P
A
R
K
I
N
G
L
O
T
UFS-5
UFS-1
UFS-2
UFS-3
UFS-4
UFS-6FF-1 COMPOSITE
DATE OF ISSUANCE
FL
O
O
R
I
N
G
M
A
N
A
G
E
M
E
N
T
A
N
D
A
B
A
T
E
M
E
N
T
W
O
R
K
P
L
A
N
A
D
D
E
N
D
U
M
HA
S
T
I
N
G
S
E
C
O
N
O
M
I
C
D
E
V
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L
O
P
M
E
N
T
A
N
D
R
E
D
E
V
E
L
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P
M
E
N
T
A
U
T
H
O
R
I
T
Y
HA
S
T
I
N
G
S
,
M
I
N
N
E
S
O
T
A
193704121
2/03/2017
SHEET NUMBER
DATENO
SURVEY
APPROVED
DESIGNED
DRAWN
PROJ. NO.
REVISION
CHECKED
0 30 60
N
EPA GRANT BOUNDARIES
DAKOTA COUNTY PARCELS (2013)
EXISTING MINOR CONTOURS
EXISTING MAJOR CONTOURS
FI
R
S
T
F
L
O
O
R
C
E
I
L
I
N
G
S
A
M
P
L
E
S
EJM
EJM
RJB
HAW
FIGURE 2
LEGEND
AREA B
AREA C
EXTERIOR BUILDING WALLS
FIRST FLOOR CEILING SAMPLE
LOCATION AND DESIGNATION
APPROXIMATE INTERIOR BUILDING WALLS
APPROXIMATE EXISTING
CONCRETE CEILING
FORMER H.D. HUDSON
MANUFACTURING FACILITY
AREA A
0 10 20
FIRST FLOOR CEILING COMPOSITE
SAMPLE AREAS AND DESIGNATION
NOTES:
1. EXISTING CEILING IS WOOD FLOOR ON WOOD JOISTS
UNLESS DEPICTED OTHERWISE.
2. FLOOR LAYOUT HAS BEEN UPDATED BASED ON ACTUAL
FIELD MEASUREMENTS
UFS-1
FF-1 COMPOSITE
DR
A
F
T
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>>>>
>>>>>>
>
>
>>>>>>
l l l l l l l l l l l l l l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
>
>
>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G
G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G
E
E
E
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E
E
E
E
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E
E
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E
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E
E
E
E
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E
E
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E E E E E E E E E E E E E E
E
E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
E E E
E E
E
E E E E E E E E E E E E E E E E E
E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E E
E
E
E
E
E E E E E E E E E E E E E E E E E
C C C C C C C C C C
OH
P
OH
P
OH
P
O
H
P
O
H
P
O
H
P
O
H
P
O
H
P
O
H
P
OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP
MISSISSIPPI RIVER
2ND ST W
LO
C
K
A
N
D
D
A
M
R
D
AC
C
E
S
S
R
D
T
O
P
A
R
K
I
N
G
L
O
T
UFS-7UFS-8
UFS-9
DATE OF ISSUANCE
FL
O
O
R
I
N
G
M
A
N
A
G
E
M
E
N
T
A
N
D
A
B
A
T
E
M
E
N
T
W
O
R
K
P
L
A
N
A
D
D
E
N
D
U
M
HA
S
T
I
N
G
S
E
C
O
N
O
M
I
C
D
E
V
E
L
O
P
M
E
N
T
A
N
D
R
E
D
E
V
E
L
O
P
M
E
N
T
A
U
T
H
O
R
I
T
Y
HA
S
T
I
N
G
S
,
M
I
N
N
E
S
O
T
A
193704121
2/03/2017
SHEET NUMBER
DATENO
SURVEY
APPROVED
DESIGNED
DRAWN
PROJ. NO.
REVISION
CHECKED
0 30 60
N
EPA GRANT BOUNDARIES
DAKOTA COUNTY PARCELS (2013)
EXISTING MINOR CONTOURS
EXISTING MAJOR CONTOURS
BA
S
E
M
E
N
T
C
E
I
L
I
N
G
S
A
M
P
L
E
S
EJM
EJM
RJB
HAW
FIGURE 3
LEGEND
AREA B
AREA C
EXTERIOR BUILDING WALLS
BASEMENT CEILING SAMPLE
LOCATION AND DESIGNATION
APPROXIMATE LOCATION OF CRAWL SPACE
APPROXIMATE INTERIOR BUILDING WALLS
NOTES:
1. EXISTING CEILING IS WOOD FLOOR ON WOOD JOISTS
UNLESS DEPICTED OTHERWISE.
2. FLOOR LAYOUT HAS BEEN UPDATED BASED ON ACTUAL
FIELD MEASUREMENTS
APPROXIMATE EXISTING
CONCRETE CEILING
FORMER H.D. HUDSON
MANUFACTURING FACILITY
AREA A
0 10 20
UFS-9
DR
A
F
T
TA
B
L
E
1
-
L
A
B
O
R
A
T
O
R
Y
D
A
T
A
FL
O
O
R
I
N
G
M
A
N
A
G
E
M
E
N
T
A
N
D
A
B
A
T
E
M
E
N
T
W
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K
P
L
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N
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D
D
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D
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M
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D
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M
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Y
P
R
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P
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R
T
Y
,
H
A
S
T
I
N
G
S
,
M
N
PCBs (u g /k g or ppb)
A
n
t
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m
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n
y
A
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n
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)
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(
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)
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(
a
)
p
y
r
e
n
e
B
e
n
z
o
(
b
)
f
l
u
o
r
a
n
t
h
e
n
e
B
e
n
z
o
(
g
,
h
,
i
)
p
e
r
y
l
e
n
e
Benzo(k)fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Indeno(1,2,3-cd)pyrene 2-Methylnaphthalene Phenanthrene Pyrene Aroclor 1016, 1221, 1232, 1242, 1248, 1254, 1260, 1262, 1268
TC
L
P
NE
5
1
0
0
N
E
1
5
5
0
.
2
1
5
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
20
x
T
C
L
P
NE
1
0
0
2
,
0
0
0
N
E
2
0
1
0
0
1
0
0
4
2
0
1
0
0
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
N
E
FF
-
1
01
/
1
3
/
1
7
-
-
-
-
-
-
6
5
-
-
-
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
<
1
6
0
0
All ND
UF
S
-
1
01
/
1
3
/
1
7
-
-
-
-
-
-
2
2
0
-
-
-
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
<
5
9
0
0
All ND
UF
S
-
2
01
/
1
3
/
1
7
-
-
-
-
-
-
3
4
0
-
-
-
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
<
3
7
0
0
0
3
9
0
0
0
<
3
7
0
0
0
All ND
UF
S
-
3
01
/
1
3
/
1
7
-
-
-
-
-
-
2
4
0
-
-
-
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
19000 <13000
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
<
1
3
0
0
0
A
l
l
N
D
UF
S
-
4
01
/
1
3
/
1
7
-
-
-
-
-
-
2
2
-
-
-
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
2800 <2000
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
<
2
0
0
0
A
l
l
N
D
UF
S
-
5
01
/
1
3
/
1
7
-
-
-
-
-
-
1
0
0
-
-
-
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
09
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
<
0
9
8
0
A
l
l
N
D
UF
S
-
6
01
/
1
3
/
1
7
-
-
-
-
-
-
2
3
-
-
-
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
<
1
4
0
0
0
A
l
l
N
D
UF
S
-
7
01
/
1
3
/
1
7
-
-
-
-
-
-
2
4
-
-
-
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
70
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
A
l
l
N
D
UF
S
-
8
01
/
1
3
/
1
7
-
-
-
-
-
-
2
8
-
-
-
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
<
7
0
0
0
7700 <7000
8
1
0
0
<
7
0
0
0
<
7
0
0
0
1
3
0
0
0
<
7
0
0
0
7
4
0
0
UF
S
-
9
01
/
1
3
/
1
7
-
-
-
-
-
-
4
6
-
-
-
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
8700 <7600
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
<
7
6
0
0
7
5
0
0
No
t
e
:
O
n
l
y
a
n
a
l
y
t
e
s
d
e
t
e
c
t
e
d
-
=
N
o
t
a
n
a
l
y
z
e
d
*
A
n
a
l
y
z
e
d
f
o
r
V
O
C
'
s
a
n
d
R
C
R
A
M
e
t
a
l
s
u
s
i
n
g
T
C
L
P
M
e
t
h
o
d
i
n
a
t
l
e
a
s
t
o
n
e
s
a
m
p
l
e
a
r
e
mg
/
k
g
=
m
i
l
l
i
g
r
a
m
s
p
e
r
k
i
l
o
g
r
a
m
PC
B
=
p
o
l
y
c
h
l
o
r
i
n
a
t
e
d
b
i
p
h
e
n
y
l
No
V
O
C
s
w
e
r
e
D
e
t
e
c
t
e
d
a
n
d
a
s
s
u
c
h
,
n
o
t
p
r
e
s
e
n
t
e
d
o
n
t
h
e
t
a
b
l
e
su
m
m
a
r
i
z
e
d
o
n
t
h
i
s
t
a
b
l
e
mg
/
L
=
m
i
l
l
i
g
r
a
m
s
p
e
r
l
i
t
e
r
u
g
/
k
g
=
m
i
c
r
o
g
r
a
m
s
p
e
r
k
i
l
o
g
r
a
m
ND
=
n
o
t
d
e
t
e
c
t
e
d
(
a
n
a
l
y
t
e
c
o
n
c
e
n
t
r
a
t
i
o
n
i
s
b
e
l
o
w
r
e
p
o
r
t
a
b
l
e
d
e
t
e
c
t
i
o
n
l
i
m
i
t
)
NE
=
n
o
t
e
s
t
a
b
l
i
s
h
e
d
=
d
e
s
i
g
n
a
t
e
s
e
x
c
e
e
d
a
n
c
e
s
>
2
0
x
T
C
L
P
S
a
m
p
l
e
N
u
m
b
e
r
A
r
e
a
F
l
o
o
r
R
e
m
o
v
e
o
r
R
e
m
a
i
n
Po
l
y
n
u
c
l
e
a
r
A
r
o
m
a
t
i
c
H
y
d
r
o
c
a
r
b
o
n
s
(
u
g
/
k
g
o
r
p
p
b
)
D
a
t
e
Me
t
a
l
s
a
n
d
C
y
a
n
i
d
e
s
(
m
g
/
k
g
o
r
p
p
m
)
1s
t
F
l
o
o
r
R
e
m
a
i
n
C
e
i
l
i
n
g
J
o
i
s
t
Ba
s
e
m
e
n
t
R
e
m
a
i
n
C
e
i
l
i
n
g
J
o
i
s
t
Pa
g
e
1
o
f
1
DRAFT