23052_Southern Steel_Haz Treatment WP_DEQ Approval 2021.03.31.docx

March 31, 2021 Sent Via E-mail
Bo Cappleman Hart & Hickman 2923 South Tryon St, Suite 100
Charlotte, NC 28203
[e-mail] Subject: Hazardous Soil Removal & Treatment Work Plan Approval Former Southern Steel Facility Charlotte, Mecklenburg County
Brownfields Project No. 23052-19-060 Dear Mr. Bo Cappleman: The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received
the Hazardous Soil Removal and Treatment Work Plan dated March 30, 2021 Work Plan). DEQ Brownfield comments to previous revisions dated March 18, 2021 of this Work Plan have been addressed; therefore, the Work Plan is approved. OR simply: The Work Plan has been reviewed and is approved.
Please be advised that this approval from DEQ Brownfields does not waive any applicable requirement to obtain any necessary permits, licenses or certifications which may be required from other state or local entities. If you have any questions, please feel free to contact me at 704-661-0330, or via e-mail at [e-mail].

Sincerely,
Carolyn Minnich
Brownfields Project Manager ec: Travis Thomas [e-mail] Trent Haston [e-mail]
Chris S. Walker [e-mail]

Ms. Carolyn Minnich March 30, 2021
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In March 2019, H&H performed soil sampling as part of a Phase II Environmental Site
Assessment. Lead was detected in four soil samples that were collected in the central and
western portions of the Site at concentrations above the DEQ Industrial/Commercial Preliminary
Soil Remediation Goals (PSRGs). Lead detections in the samples were sufficiently high such
that waste characterization sampling was warranted. Therefore, in September and October 2019,
H&H performed soil characterization sampling at the Site to evaluate soil conditions in areas that
may be disturbed during grading activities associated with the proposed Site redevelopment.
Laboratory analytical results indicated the presence of lead in leachate from composite soil
samples B1-A (13.5 mg/L), B1-B (26.0 mg/L), Comp-1 (11.4 mg/L), and Comp-3 (5.8 mg/L) at
concentrations above the Environmental Protection Agency (EPA) Toxicity Characteristic
Leaching Procedure (TCLP) regulatory level of 5.0 mg/L. Based on the TCLP lead data and
recent civil engineering plans which depict the proposed warehouse buildings, characteristically
hazardous soil may be present in an approximate 0.3-acre area to a depth of at least 4 feet below
ground surface (ft bgs) within and adjacent to the west, north, and east of the proposed
Building 1 in the western portion of the Site (see Figure 2). TCLP data from the September and
October 2019 soil characterization sampling is summarized in Table 1.

An Environmental Management Plan (EMP) was executed for the Site on March 5, 2021. The
EMP designated the approximate 0.3-acre area containing characteristically hazardous soil as
“Area 1.” Soil within Area 1 that is disturbed during redevelopment activities will be managed
in accordance with protocol outlined in the following section.

2.0 Scope of Work

2.1 Soil Removal and Stockpiling

Based on the proposed Site redevelopment plans, soil within Area 1 will be disturbed during
grading, installation of aggregate piers, construction of foundation footers, and installation of
subgrade utilities. As such, H&H will utilize a submeter global positioning system (GPS) device
to mark the perimeter of Area 1 using wooden stakes and flagging so that soil removed from
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Area 1 can be properly segregated and stockpiled in accordance with Figure 1 of the DEQ-
approved EMP (NCBP Diagram for Temporary Containment of Impacted or Potentially
Impacted Soil). The proposed stockpile location is depicted on Figure 2; however, please note
that this location is subject to change based on Site conditions at the time of stockpiling (i.e., due
to equipment staging areas, construction traffic, etc.).

The soil stockpile will include soil from depth intervals that were not previously tested by TCLP.
For example, initial grading will include the removal of the top 6 to 12 inches of organic-rich soil
along Area 1, and installation of aggregate piers will generate soil cuttings from depths of
approximately 0 to 20 ft bgs. Therefore, the soil removed and stockpiled from Area 1 will be
characterized as described below to evaluate the extent of treatment via lead stabilization that
will be required.

Upon completion of soil excavation activities in Area 1, the soil stockpile will be subdivided into
approximate 100 cubic yard sections. One composite soil sample (consisting of five evenly
spaced sample aliquots) will be collected per approximately 100 cubic yard section using a
decontaminated stainless steel hand auger or trowel. Each composite soil sample will be
thoroughly homogenized in a stainless steel or glass bowl prior to placement in dedicated
laboratory-supplied sample containers, which will be labeled with the sample identification, date,
and requested analysis, and placed in a laboratory-supplied cooler with ice. The samples will be
delivered to a North Carolina-certified laboratory under standard chain-of-custody protocols and
analyzed for total lead by EPA Method 6020. If the results of total lead analysis indicate
potentially hazardous levels of lead in a sample based on the “Rule of 20” (i.e., greater than
100 mg/kg), the sample will be analyzed for TCLP lead by EPA Method 6020 to confirm which
portions of the stockpile contain characteristically hazardous levels of lead. The total lead data
will also be compared to the DEQ Residential and Non-Residential Preliminary Soil
Remediation Goals (PSRGs) to evaluate whether the material will require an impervious cap or
placement of two feet of clean fill on top of the soil after placement in other areas of the Site. If
the location of soil disposition is not covered with an impervious surface, the soil conditions will
be further evaluated during final grade sampling.
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TCLP analytical data will be compared to the EPA TCLP regulatory level of 5.0 mg/L. If lead is
not detected in composite sample leachate at a concentration above 5.0 mg/L, then the soil from
the corresponding stockpile section will be placed in an area of the Site that requires fill material.
The locations(s) of Area 1 soil disposition have not yet been determined but will be surveyed in
the field and added to the Brownfields Plat. A cut/fill analysis which depicts fill areas (i.e.,
potential areas of soil disposition) is included as Appendix A.

Portions of the soil stockpile where lead is detected in composite sample leachate at
concentrations above the EPA TCLP regulatory level of 5.0 mg/L will be treated by lead
stabilization as described below.

2.2 Soil Amendment Bench Testing

Soil stabilization will be conducted by mixing EnviroBlend, Free Flow, or an equivalent lead-
stabilizing amendment with the impacted soil on-Site at the proposed stockpile location in the
southeastern portion of the Site (see Figure 2). The blending compound is a magnesium oxide
powder blend that stabilizes and binds soil metals to reduce metal leachability and render the soil
non-hazardous prior to placement in a designated area on the Site or transporting off-Site to a
permitted Subtitle D Landfill for disposal as non-hazardous waste. Prior to conducting soil
removal and stabilization activities, a bench test will be conducted by the compound
manufacturer to determine the proper dosage of amendment to use during stabilization activities.
H&H will provide a soil sample from the location exhibiting the highest TCLP lead
concentration detected in the hazardous soil stockpile for the bench testing. Based on the bench
test results, the recommended amount of amendment measured in percent by weight will be
added to the soil stockpile and mixed as discussed below. EnviroBlend and Free Flow product
specifications is provided in Appendix B.
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2.3 Soil Stabilization
During stabilization activities, H&H will direct the contractor to mix soil within the stockpile
using an excavator. Prior to and during excavation and mixing, the soil will be dampened with a
mist or fine spray to mitigate dust emissions.

After blending of the amendment and soils is completed, the stabilized material will remain in
place, and confirmation samples will be collected as described below. After confirmation
sampling, the treated soil will be covered with plastic and protected from rainfall to prevent run-
off while awaiting confirmation sampling results.

2.4 Post-Stabilization Soil Sampling
Upon completion of treatment activities, H&H will collect confirmatory samples to confirm that
the soil has been treated to non-hazardous lead levels. The treated soil stockpile will be
subdivided into approximate 100 cubic yard sections. Post-treatment confirmation samples will
be collected with a decontaminated stainless steel hand auger or trowel at a rate of one composite
sample (consisting of five evenly spaced sample aliquots) per approximately 100 cubic yard
section. Each composite soil sample will be thoroughly homogenized in a stainless steel or glass
bowl prior to placement in dedicated laboratory-supplied sample containers, which will be
labeled with the sample identification, date, and requested analysis, and placed in a laboratory-
supplied cooler with ice. The samples will be delivered to a North Carolina-certified laboratory
under standard chain-of-custody protocols and analyzed for TCLP lead by EPA Method 6020 to
confirm that lead is not detected above the EPA TCLP regulatory level of 5.0 mg/L. If lead is
detected in the leachate at a concentration below 5.0 mg/L, no further treatment or sampling will
be performed.

2.5 Quality Assurance/Quality Control

Non-dedicated equipment and tools will be decontaminated prior to use at each sampling
location or following exposure to soil. For quality assurance and quality control purposes
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(QA/QC), H&H will duplicate soil samples for TCLP lead analysis by EPA Method 6020 during
pre-stabilization and post-stabilization soil sampling (two total duplicate samples). Duplicate
soil samples will be collected at a rate of one per 20 samples per day.

Laboratory QA/QC procedures will be employed to ensure appropriate sample handling and
analysis and to aid in the review and validation of the analytical data. QA/QC procedures will be
conducted in accordance with the method protocols and will include regular equipment
maintenance, equipment calibrations, and adherence to specific sample custody and data
management procedures. Samples will be analyzed in conjunction with appropriate blanks,
laboratory duplicates, continuing calibration standards, surrogate standards, and matrix spiking
standards in accordance with approved methodologies to monitor both instrument and analyst
performance. H&H will request that the laboratory reporting limits be equal to or below
applicable screening criteria. Additionally, H&H will request that the laboratory include
estimated concentrations for compounds that are detected at levels above the laboratory method
detection limit, but below the laboratory reporting limit (J Flags).

2.6 Treated Soil Disposition

Option 1:
After the impacted soil has been determined to be non-hazardous based on confirmation
sampling results, the treated soil will be placed in a designated area which will be surveyed in the
field and depicted on the Brownfields survey plat. The area(s) and depth of soil placement have
not yet been determined, but areas could include paved parking areas or driveways, beneath
building foundations, or unpaved areas.

Option 2:
Alternatively, the stabilized soil will be transported to a Subtitle D landfill (likely the Republic
Services landfill in Concord, North Carolina) for disposal. A non-hazardous waste profile will
be completed and submitted to the disposal facility. The soil will be loaded onto trucks at the
stockpile location and transported for disposal at the waste disposal facility. H&H will maintain
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copies of disposal manifests and certified weight tickets for each truckload of stabilized material
that is hauled off for disposal.

2.7 Reporting

Following completion of the proposed activities, H&H will document the soil treatment and
placement activities in a report. The report will include a description of the stockpile sampling
activities, the laboratory analytical reports, a figure depicting sample locations and the final soil
disposition location, a tabular summary and discussion of the analytical data in comparison to
regulatory screening levels, the quantity of soil excavated, the quantity of soil treated, field logs,
a photograph log, laboratory analytical data with chain of custody records, and conclusions
concerning our activities.

A DEQ Brownfields-approved EMP is in place for the Site and proposed redevelopment
activities are anticipated to begin in the near term. We appreciate your prompt review of this
Work Plan. Should you have any questions or need additional information, please do not
hesitate to contact us at [phone].

Sincerely,
Hart & Hickman, PC
Bo Cappleman, PG Christine E. Schaefer
Due Diligence Manager Senior Project Environmental Scientist Attachments cc: Mr. Trent Haston, Wilkinson Steel Yard, LLC

Tables
Table 1
Summary of Composite Soil Sample Analytical Results
Former Southern Steel Facility
Brownfields Project No. 23052-19-060
3015 Wilkinson Boulevard
Charlotte, North Carolina
H&H Job No. ANR-007
Area of Site
Sample ID B1-A B1-B B1-C B2-A B2-B B2-C B3-A B3-B B3-C Comp-1 Comp-2 Comp-3 Comp-4 Comp-5 Comp-6
Sample Date 9/24/2019 9/24/2019 9/24/2019 9/24/2019 9/24/2019 9/24/2019 9/24/2019 9/24/2019 9/24/2019 10/30/2019 10/30/2019 10/30/2019 10/30/2019 10/30/2019 10/30/2019
Sample Type Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite Composite
Sample Depth (ft bgs)0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4 0-4
Metals (6010D/7470A TCLP)
Arsenic <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 0.0070 J 0.016 J <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 5.0
Barium 0.51 0.53 0.53 0.95 0.59 0.70 0.50 0.41 0.52 0.90 0.75 0.76 0.90 0.63 0.72 100
Cadmium 0.0015 J 0.0015 J 0.0013 J <0.00040 0.0040 J 0.0043 J 0.0028 J 0.0050 <0.00040 0.0054 0.0036 J 0.0028 J 0.0034 J 0.0030 J 0.0036 J 1.0
Chromium (total)<0.0010 0.0038 J <0.0010 <0.0010 0.0044 J <0.0010 <0.0010 0.0020 J <0.0010 0.031 J 0.015 J 0.011 J 0.011 J 0.025 J 0.0057 J 5.0
Lead 13.5 26.0 4.3 0.78 0.43 2.2 0.19 0.13 0.017 J 11.4 4.5 5.8 4.0 1.8 2.5 5.0
Mercury <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 <0.00010 0.2
Selenium <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 0.0056 J <0.0047 <0.0047 <0.0047 <0.0047 <0.0047 0.0078 J 0.024 J <0.0047 0.0088 J 1.0
Silver <0.0025 <0.0025 <0.0025 0.0028 J <0.0025 <0.0025 0.0042 J 0.0031 J <0.0025 <0.0025 <0.0025 <0.0025 <0.0025 <0.0025 <0.0025 5.0
Laboratory analytical methods are shown in parentheses.
Notes
1) EPA Maximum Concentration of Contaminants for Toxicity Characteristic Leaching Procedure (TCLP) regulatory level (November 2004).
J = estimated concentration above the laboratory method detection limit but below the laboratory reporting limit
Soil concentrations are reported in miligrams per liter (mg/L).
Compound concentrations are reported to the laboratory method detection limit.
Bold indicates an exceedance of EPA's Maximum Concentration of Contaminants for TCLP regulatory level.
ft bgs = feet below ground surface
Proposed Building No. 1 Proposed Building No. 2 Proposed Building No. 3
EPA TCLP
Regulatory Level
(mg/L)1
Area Between Proposed Building Nos.1 and 2
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2/13/2020
Table 1
Hart & Hickman, PC

Figures
0 2000 4000
APPROXIMATE
SCALE IN FEETN
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
CHARLOTTE WEST, NORTH CAROLINA 1996
TITLE
PROJECT
SITE LOCATION MAP
FORMER SOUTHERN STEEL FACILITY3015 WILKINSON BOULEVARDCHARLOTTE, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE:
2-12-20 0
1ANR-007
SITE
ANDREW JACKSON HIGHWAY
ASHLEY ROAD ASHLEY ROADASHLEY ROADASHLEY ROAD
WILKINSON BOULEVARD WEYLAND AVENUEREVISION NO. 0
JOB NO. ANR-007
DATE: 3-10-21
FIGURE NO. 2
FORMER SOUTHERN STEEL FACILITY
3015 WILKINSON BOULEVARD
CHARLOTTE, NORTH CAROLINA
SITE MAP
LEGEND
SITE PROPERTY BOUNDARY
RAILROAD TRACKS
COMPOSITE SOIL BORING
APPROXIMATE EXTENT OF
HAZARDOUS LEVELS OF LEAD AT
0-4 FT BGS (AREA 1)
PROPOSED BUILDING FOOTPRINT
COMP-1
COMP-3
B1-B
B1-A
B1-A-2 B1-A-3
B1-A-4
B1-B-1
B1-B-3 B1-B-2
B1-B-4
A B
DC
A B
DC
B1-A-1
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
NOTES
1. AERIAL IMAGERY OBTAINED FROM MECKLENBURG
COUNTY GIS.
2. ONLY SOIL SAMPLE LOCATIONS INDICATING LEAD IN
LEACHATE AT CONCENTRATIONS ABOVE THE
ENVIRONMENTAL PROTECTION AGENCY TOXICITY
CHARACTERISTIC LEACHING PROCEDURE
REGULATORY LEVEL ARE SHOWN.
3. COMPOSITE SAMPLES ARE COMPRISED OF SOIL
ALIQUOTS FROM 0-2 FEET BELOW GROUND
SURFACE (BGS) AND 2-4 FEET BGS FROM EACH
COMPOSITE SOIL BORING IN EACH AREA.
4. SAMPLE LOCATIONS ESTIMATED USING TRIMBLE
GPS.
5. PROPOSED REDEVELOPMENT PLAN WAS
PREPARED BY AMERICAN ENGINEERING
ASSOCIATES - SOUTHEAST P.A. AND PROVIDED BY
THE PROSPECTIVE DEVELOPER.ASHLEY ROADASHLEY ROAD
WILKINSON BOULEVARD WEYLAND AVENUEQUIKTRIP
(3025 WILKINSON BLVD)
MECKLENBURG COUNTY ABC
(2915 WILKINSON BLVD)
MECKLENBURG COUNTY SCHOOLS

B
U
S
MAINTENANCE FACILITY
(3101 WILKINSON BLVD)
EASTWAY WRECKER SERVICES
(2801 WILKINSON BLVD)
MULTI-TENANT STRIP MALL
SHELL GAS STATION
(3000 WILKINSON BLVD)
BAR-B-Q KING
(2900 WILKINSON BLVD)
PARKER VETERINARY
HOSPITAL
(2820 WILKINSON BLVD)
QUICK AUTO SALES
(2926 WILKINSON BLVD)
PROPOSED
BUILDING 1 PROPOSED
BUILDING 2 PROPOSED
BUILDING 3
A
DC
B
PROPOSED SOIL STOCKPILE
AND BLENDING AREA
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Appendix A Cut/Fill Analysis
PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE
PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCE PCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCE
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OE
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WWWWSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSOEOEOEEX. 15" RCP
EX. 15" RCPEX. 18" RCP
OE OE OE OE OE OE OE OE OE OE OE OE OEOEOEOEOEOEOEOE
OEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOEOE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE OE
PCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCEPCCE50' EX. R/WDAVID L. WILLIAMS
D.B. 11826, PG. 825
TAX PARCEL #117-011-15
EX. 30"RCP
LP
10'x70'35'x35'10'x70'35
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3
5
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35'x35'
10'x70'35'x35'10'x70'
20' TRANSITIONAL SETBACK
Concrete
PARCEL 1
QUIKTRIP CORPORATION
MB. 54, PG. 565
DB. 29066, PG. 563
TAX PARCEL #11701122
TOTAL AREA: 118,875 SF (2.73 AC)N01°45'56"E 144.08'S03°19'33"W 144.02'PP
EX. 30" Curb & GutterEX. 30" RCP
EX. Concrete Sidewalk 75' FUTURE R/WWMWM
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EX. 36"RCPEX. 36"RCP
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S03°19'33"W 608.56'(TOTAL)EXISTING REGIONALSTORMWATERMANAGEMENT BASINDRY DETENTIONPP
LOT 1
MB 61, PG 61
MECKLENBURG COUNTY ABC
DB. 30170, PG. 567
TAX PARCEL #11701122
EX
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S03°24'51"W 337.71'2
0
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PARCEL 4
MB 57, PG 114
WILKINSON HOLDINGS I, LLC
DB. 27179, PG. 152
TAX PARCEL #11701124
TOTAL AREA: 39,028 SF (0.896 AC)
FUTURE RIGHT-OF-WAY9,971 SF (0.229 AC)S12°28'49"E

143
.01
'(TOTAL)S86°35'09"W 120.50'
S86°35'09"W 323.33'S86°35'09"W 288.32'
N86°38'06"W 43.11'
TOP OF BANK FIELD LOCATED
EX. HEADWALL
N88°05'56"W 651.56'
N88°05'56"W 109.64'
S76°00'03
"
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2038.30' G
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NGS MONUMENT "254 AZ MK"
NC GRID NAD83
N: 541,723.45 FT (37.5984387° / 37°35'54.3
8
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E: 1,437,993.26 FT (84.0318138° / -84°01'54
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CONTROL CORNER
NC CORNER NAD83
N: 541,230.37 (37.5984387° / 37°35'34.62
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N
)
E: 1,436,015.50 (-84.0331665° / 84°01'59
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4
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NC CORNER NAD83
N: 541,255.63
E: 1,435,254.72
S
2
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30' CROSS ACCESS AND UTILITIESPERMANENT DETENTION EASEMENT
EX. 20' PCCE TO WILKINSON BLVD 36' CROSS ACCESS AND UTILITIESPERMANENT DETENTION EASEMENTPPPP
STOPSIGN
DO NOTENTER SIGN
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N1°34'50"E 340.79'EX. 18" RCPEX. 54" CMPEX. RCP EX.
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END SPOT 1, LLC
DB. 33272, PG. 665
TAX PARCEL #11701122
GRAVEL
GRAVEL
METAL RETAINING WALL EX. 24" RCPAPPROX. LOCATION END
OF PIPE AS PER
PREVIOUS SURVEY.
POSSIBLY BURIED
INV. 725.49
EX. 36"RCP
RIM:731.72
IN(A):724.72
IN(B):724.60
OUT:724.66
RIM:730.24
IN(A):726.09
IN(B):726.33
OUT:726.00
RIM:733.17
IN:728.82
OUT:728.72
RIM:729.45
IN:723.21
OUT:723.10
INV:723.01
(B)
(A)
(B)(A)20' STREAMSIDE ZONE15'UPLANDZONE35' SWIM BUFFERTOP OF BANK FIELD LOCATED
35' SWIM BUFFER20' STREAMSIDE ZONE15'UPLANDZONEWD732
730730729 731732
733
72572672772872972372372472572672772872973
0
731 733732732
733
732
732
740
73
0
732
730
729
728725 729 730
731
7
3
2
733
731
731 731 732 73373
4 7457
3
2 735
740
73
1
745
7
3
3
7
3
4
735
2
4
"

R
C
P
24" RCP
24" RCP 24" RCP15" RCP15" RCP15" RCP15" RCPA1-CB
A2-DIA4-DI
A3-DI
A6-DI
A5-DI
A7-DI
A8-DI
BUILDING
CBUILDING
BBUILDING
A
EX. DRY
DETENTION
POND
LP: 731.34
LP: 732.30
LP: 732.23
LP: 732.12
LP: 732.42
LP: 732.16
LP: 732.69
LP: 732.03
QUIK TRIP ABC STORE
HP: 732.79
HP: 732.82
HP: 734.05
HP: 733.47
HP: 733.54
733.51
734.25 734.25
733.23733.23
732.99 732.99
733.06
733.26733.74
733.22
-2:1-2:1
100' NORFOLK SOUTHERN R/W733.11
733.11733.10
733.10
TC: 733.47FL: 732.97
TC: 733.09FL: 732.59
TC: 733.51FL: 733.01
TC: 734.08FL: 733.58
TC: 733.46FL: 732.96
TC: 733.50FL: 733.00
TC: 733.55FL: 733.05
TC: 734.11FL: 733.61
TC: 734.21FL: 733.71
TC: 734.11FL: 733.61
TC: 733.52FL: 733.02
TC: 733.39
FL: 732.89
TC: 734.03FL: 733.53
TC: 733.62FL: 733.12
TC: 733.60FL: 733.10
TC: 733.57FL: 733.07
TC: 733.60FL: 733.10
TC: 733.60
FL: 733.10
TC: 733.12
FL: 732.62
TC: 733.08FL: 732.58
TC: 733.53FL: 733.03
TC: 733.53
FL: 733.03
TC: 733.50FL: 733.00
TC: 733.69FL: 733.19
TC: 734.11FL: 733.61
TC: 734.11
FL: 733.61
TC: 732.97FL: 732.47
TC: 732.33FL: 731.83
TC: 733.53FL: 733.03
TC: 733.53FL: 733.03
TC: 733.00FL: 732.50
TC: 733.57FL: 733.07
TC: 733.55FL: 733.05
TC: 733.60
FL: 733.10
TC: 733.60FL: 733.10
TC: 733.60
FL: 733.10
TC: 733.19FL: 732.69
TC: 733.12FL: 732.62
TC: 733.01FL: 732.51
TC: 732.47FL: 731.97
TC: 732.31FL: 731.81
TC: 735.00FL: 734.50MEET EX.TC: 734.03FL: 733.53MEET EX.TC: 732.68FL: 732.18
MEET EX.
TC: 731.63FL: 731.13MEET EX.
TC: 731.24FL: 730.74
MEET EX.
TC: 732.08FL: 731.58MEET EX.
TC: 733.26
FL: 732.76MEET EX.
TC: 731.92FL: 731.42MEET EX.
-1.00%-5.49%
-1.01%-0.76%-1.00%-2.18%
-1.23%
-2.00%-3.00%-1.00%-1.00%-1.30%-1.69%-1.00%-1.00%-1.00%-3.65%-1.79%-2.71%-1.00%-2.14%-1.67%-1.16%-1.37%-1.59%-1.00%-1.00%-1.84%-1.47%-1.47%-1.19%-1.19%-1.28%-1.18%-1.31%-1.31%-1.16%-2.00%-2.00%-1.00%-2.00%-1.59%-1.00%-2.16%-1.00%-1.72%
-1.11%-0.45%-1.49%
-0.89%-0.43%-2.00%
-1.54%-1.00%-2.00%
-2.00%0.00%-0.95%
-1.68%0.53%WILKINSON BLVD (US-29 / NC-74)
100' NCDOT PUBLIC R/W
730.52
CONVERT EX. CB
TO DI
EX. 20' PCCE TO WILKINSON BLVDPB 57 PG 114
732
733
733
73
3 733734
734ADJUST EX JBRIM TO GRADE -1.00%-1.00%-0.95%
-1.00%3.76%3.76%-2.00%-1.00%EX. ACCESS EASEMENTPB 57 PG 114 100' R/WEX. CBRIM: 733.17INV IN: 728.82INV OUT: 728.72
EX. CBRIM: 731.72INV IN: 724.72INV IN: 724.60INV OUT: 724.66
EX. JB A-9RIM: 729.45INV IN: 723.21INV OUT: 723.10
EX. FES A-10INV OUT: 723.01
EX. CBRIM: 730.30INV OUT: 726.60
EX. CB
EX. CB
EX. CB EX. JB EX. CBRIM: 734.92INV OUT: 730.07EX. CBRIM: 734.94INV IN: 729.53INV OUT: 729.53
EX.OUTLETSTRUCTURE
EX. 36" RCPEX. 36" RCPEX.
2
4
"

R
C
P
E
X
.

1
5
"

H
D
P
E
EX CBRIM: 730.43INV OUT: 724.93
EX CB
EX CB EX CB
EX 15" HDPE EX 15" HDPE
EX 15" HD
P
E
EX CB
EX. 36" RCP
EX. 18" RCP EX. 12" RCPEX. PDEEX
.

P
D
E
EX
.

1
5
"

R
C
PEX. 18" RCPEX. 1.5' CURB & GUTTER
EX. 1.5' CURB & GUTTER
EX. 1.5' CURB & GUTTER
EX. 1.5' CURB & GUTTER
EX. ASPHALT EX. ASPHALTEX. 1.5' CURB & GUTTEREX. 1.5' CURB & GUTTEREX. ASPHALT
EX. CONC.
EX. CONC.DRIVEWAY
EX. ASPHALTDRIVEWAY
EX. 2.0' CURB & GUTTER
EX. 2.0' CURB & GUTTER
EX. CONC. PAVEMENT
EX. 2.0' CURB & GUTTER
EX. 2.0' CURB & GUTTER
EX. CONC. PAVEMENT
EX. CONC.DRIVEWAY EX. ASPHALTEX. 2.5' CURB & GUTTEREX. CBRIM: 730.24INV IN: 726.09INV IN: 726.33INV OUT: 726.00
-1.00%-1.29%-2.00%TC: 733.14FL: 732.64
-2.53%
732
-1.00%-1.00%-1.00%TC: 733.56
FL: 733.06
733734733733731.05
732.07
733.67
733.37
733.27
733.08
732.98733.59 733.34 733.34
733.91
733.85 733.85
734.05
-1.00%733.67
731.12
731.15
732.17
733.47 732.66 TC: 734.11
FL: 733.61
TC: 733.67FL: 733.17
TC: 733.57FL: 733.07
TC: 733.22FL: 732.72
TC: 733.22FL: 732.72
TC: 733.50FL: 733.00
733
73
3
73
3 734734
7327337
3
2 733-1.71%-1.00%-1.00%TC: 733.35
FL: 732.85
TC: 733.19
FL: 732.69
TC: 734.20FL: 733.70
734.25
733.57
FFE = 733.67 FFE = 734.25
FFE = 733.74
731.88
732.77
731
EX. 24" RCPINV: 729.45
EX. 24" RCP BEGINNIGLOCATION UNKNOWN
REMOVE EX. 24" RCP UNDERPROPOSED PAVEMENT. PLUG
PIPE END PER NCDOT STD. 840.71
10" HDPE
ROOF DRAIN@ MIN. 1.0%
8" HDPEROOF DRAIN
@ MIN. 1.0%
8" HDPE
ROOF DRAIN
@ MIN. 1.0%
8" HDPEROOF DRAIN
@ MIN. 1.0%
8" HDPEROOF DRAIN@ MIN. 1.0%
10" HDPE
ROOF DRAIN
@ MIN. 1.0%
10" HDPEROOF DRAIN
@ MIN. 1.0%
8" HDPE
ROOF DRAIN@ MIN. 1.0%
8" HDPEROOF DRAIN@ MIN. 1.0%
10" HDPEROOF DRAIN@ MIN. 1.0%
10" HDPE
ROOF DRAIN
@ MIN. 1.0%
8" HDPE
ROOF DRAIN
@ MIN. 1.0%
8" HDPE
ROOF DRAIN
@ MIN. 1.0%
8" HDPEROOF DRAIN@ MIN. 1.0%
8" HDPEROOF DRAIN@ MIN. 1.0%
10" HDPEROOF DRAIN@ MIN. 1.0%8" HDPEROOF DRAIN
@ MIN. 1.0%
8" HDPEROOF DRAIN@ MIN. 1.0%
R2-COGRND = 733.62
INV = 730.73
R4-COGRND = 733.62INV = 729.80
R6-COGRND = 733.62
INV = 729.45
R9-CO
GRND = 733.62INV = 728.92
R8-COGRND = 733.62
INV = 729.33
R14-CO
GRND = 733.55INV = 728.92
R13-CO
GRND = 733.55INV = 729.33
R11-COGRND = 733.55INV = 729.45
R21-CO
GRND = 734.13INV = 729.55R16-DSGRND = 733.55INV = 729.32
R19-COGRND = 733.19INV = 728.85
R18-COGRND = 733.55
INV = 729.31
R23-COGRND = 734.13INV = 729.54
R24-COGRND = 733.69INV = 729.08
R26-CO
GRND = 733.76INV = 729.61
R29-CO
GRND = 733.52
INV = 729.14
R28-CO
GRND = 734.21
INV = 729.61
ROOF DRAINS DISCHARGE TOGRADE ALONG FRONT OF THEBUILDING SEE SHEET C5.1 FOR
TRIBUTARY AREAS
ROOF DRAINS DISCHARGE TOGRADE ALONG FRONT OF THEBUILDING SEE SHEET C5.1 FOR
TRIBUTARY AREAS
ROOF DRAINS DISCHARGE TOGRADE ALONG FRONT OF THEBUILDING SEE SHEET C5.1 FOR
TRIBUTARY AREAS
R15-DSGRND = 730.13INV = 729.38
R17-DSGRND = 730.13INV = 729.37
R10-DSGRND = 730.27
INV = 729.51
R12-DSGRND = 730.15
INV = 729.39
R22-DSGRND = 730.36
INV = 729.60
R20-DSGRND = 730.37INV = 729.61
R25-DS
GRND = 730.43INV = 729.67
R27-DS
GRND = 730.43INV = 729.67
R1-DS
GRND = 731.55INV = 730.79
R3-DSGRND = 730.62
INV = 729.86
R5-DSGRND = 730.27
INV = 729.51
R7-DS
GRND = 730.15INV = 729.39 EX. 5' CONC. SIDEWALKEX. 5' CONC. SIDEWALKWILKINSON BLVD (US-29 / NC-74)
100' NCDOT PUBLIC R/W
TC: 735.24
FL: 734.74
UGEUGEUGEUGEUGE UGE UGE UGE UGE UGE UGE UGE UGE UGE UGE
UGEUGEUGEUGEUGE UGE UGE
UTUTUTUT UT UT UT UT UT UT UT UT UT UT
UGEUGEUGEUGEUGE UGE UGE UGE UGE UGE UGE UGE UGE UGE UGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGEUGE UGE UGE
UTUTUTUT UT UT UT
UTUTUTUT UT UT UT UT UT UT UT UT UT UTUTUTUTUTUTUTUTUTUTUTUTUTUTUTUTUTUT UT UT UT
AREA 1
CUT/FILL
ANALYSIS
--
PROPOSED TREE PROTECTION FENCE
( IN FEET )
0
GRAPHIC SCALE
1 inch = 30 ft.
15 30 6030
LOCATION MAP
SCALE: 1" = 1,500'
Wilkinson Blvd
Remount RoadDonald
Ross
Road
As
h
l
e
y
RoadWest Blv
d
N
C-
1
6
0
Greenland Ave
SITE
To I-77
To I-485
Old Steele Creek RdWeyland AveUE UE
DROP INLET & PIPE
CATCH BASIN & PIPE
STORM DRAIN MANHOLE & PIPED
POWER LINE (UNDERGROUND)
LEGEND:
R/W
e e e
G G
E E
SS SS
FO FO FO
W W
EASEMENT
RIGHT-OF-WAY
SETBACK
GAS LINE
POWER LINE (OVERHEAD)
SANITARY SEWER PIPE
STORM DRAIN PIPE
TELEPHONE LINE (UNDERGROUND)
WATER LINE
PROPERTY LINE
X X FENCE
TP TP
680
677
680
677
EX. MAJOR CONTOUR
EX. MINOR CONTOUR
TO WILKINSON BLVDINTERSECTION WITHASHLEY ROADPROPOSED CONCRETE PAVEMENT
PROPOSED HEAVY DUTY ASPHALT
PAVEMENT
PROPOSED STANDARD ASPHALTPAVEMENT
4-13-20
1
1
1
1
2
Elevations Table
Number
1
2
3
4
5
6
7
8
9
Minimum Elevation
-4.00
-3.00
-2.00
-1.00
0.00
1.00
2.00
3.00
4.00
Maximum Elevation
-3.00
-2.00
-1.00
0.00
1.00
2.00
3.00
4.00
5.00
Area
1455.05
2737.22
5259.51
15276.05
28434.38
27936.75
35301.14
24552.73
1725.18
Color
American Engineering Associates - Southeast, P.A.8008 Corporate Center Dr - Suite 110Charlotte, NC 28226704-375-2438AMERICANEngineeringFIRM # C-3881 *** 3 Days Before Digging ***
North Carolina 811
811 or 1-800-632-4949
Remote Ticket Entry
http://nc811.org/remoteticketentry.htm
L
ARPONISSEFO
ENGINE RE
33046
SEAL
JOB NUMBER:
DATE:
DRAWN BY:
CHECKED BY:
C190079
CT
CDA
2-21-2020
2-21-20
1-28-2021
NOTES:
1.PRIOR TO PLACEMENT OF FILL MATERIAL WITHIN PROPOSED BUILDING FOOTPRINTS,UP TO 1 FT OF CUT WILL OCCUR TO REMOVE STRUCTURALLY UNSUITABLE SOILS WITHHIGH ORGANIC CONTENT.
2.AREA 1 NOTED BELOW CONTAINS POTENTIALLY HAZARDOUS LEVELS OF LEAD. SOILSREMOVED FROM THIS AREA MUST BE STOCKPILED IN ACCORDANCE WITH THEDEQ-APPROVED ENVIRONMENTAL MANAGEMENT PLAN AND CHARACTERIZED PRIORTO EXPORT FROM THE SITE OR PRIOR TO PLACEMENT IN A DESIGNATED AREA ON THESITE.

Appendix B EnviroBlend and Free Flow Product Specifications

Determining the Right EnviroBlend® chemistry for your site.
An overview of our complimentary treatability study services

Treatability Study Instructions

EnviroBlend is not a one-size-fits all approach as we have a family of chemistries that are tailor-made for
each unique application. The most effective and preferred method for determining the best EnviroBlend
chemistry and dosage rate for your application is through a complimentary treatability study. To
complete a treatability study, we kindly request that you follow the steps below:

1. Please obtain a 2 lb. representative sample from your site and send it directly to our 3rd party lab
at the following address:

Ursus Remediation Testing & Technologies, LLC
1204 Springdale Street
Mount Horeb, WI 53572

The sample can be collected and put in any type of packaging (i.e., Ziplock bag), and can be
shipped as-is (it does NOT have to be on ice, etc.).

2. The attached form should be filled out to the best of your ability. Please print this out and
include in your sample to the lab. Please also email a copy to [e-mail] so
that we can track the sample. We can usually turn the results around in a 2-3 business days.

EnviroBlend® Overview

For over 40 years, EnviroBlend has been a trusted name in heavy metals stabilization. Our family of
chemistries are successful in stabilizing lead, cadmium, arsenic, hexavalent chromium, zinc, nickel, copper
and more. We can treat to regulatory goals such as the Toxicity Characteristic Leaching Procedure (TCLP),
the Synthetic Precipitate Procedure (SPLP), the Multiple Extraction Procedure (MEP) and the California
Wet Test (CalWet). We also have treatment reagents for industrial acid gas emissions and odor control.

EnviroBlend products are custom made to perform in a wide range of waste matrices and are available in
dry (milled or granular) and slurry form. They can be used on remediation sites in-situ or ex-situ for soil
and/or groundwater. Our foundry and industrial products are available as in-line treatment for the
elimination of hazardous waste generation.

If you have questions, please contact Charis Gehret at [e-mail] .

EnviroBlend® Application and Handling

EnviroBlend® Application

EnviroBlend® is a dry granular or milled material that can be purchased in 2000# Supersacks or
bulk. The single consideration with treatment is making sure product is homogeneously
mixed within the matrix (soil, waste, etc.). There is no preferred method for mixing.
Generally, clients utilize excavators, track hoes, backhoes, rotary-head mixers, pug-mills, or
agricultural tillers.

If not using a batch plant or pug mill, it is advisable to parcel out soil if not already residing in
cells or piles. This will allow for more careful metering of amendment. This is an example of the
steps for batch-mixing:

1. Excavate a pile of contaminated waste/soil of a set amount – for example 100 tons, etc.
2. Add the EnviroBlend at the required dosage. For example, if a 2% dosage rate of
EnviroBlend has been determined to be needed, it would necessitate that you add 2
tons of EnviroBlend per each 100 tons of soil.
3. Mix soil/EnviroBlend pile thoroughly with any of the previously mentioned equipment
so that it becomes a homogenous mix.
4. Once complete, you can sample immediately for TCLP. There no cure time and no
additives (e.g. water) or activator(s) need be mixed with the product for treatment

Some products are offered in slurry form, for these products please see Slurry Application.

EnviroBlend® Handling and Shelf Life

Store product in a dry, protected place. Do not allow water to penetrate impoundment, silo, or
Supersack. Significant or repeated exposure to precipitation may cause the product to clump or
form a crust.

With bulk piles of product, ground and top coverage tarps are recommended to keep product
dry from precipitation and from wicking moisture from the ground. For Supersacks, even
though sacks are water resistant and shrink-wrapped to pallets, tarping or covered storage of
Supersacks is recommended to prevent product exposure to precipitation or ponded water –
on the ground or on the sack – especially for prolonged (months) product staging time.

EnviroBlend® Application Guidelines and Storage and Handling - 2019
Note that there is no specific shelf life, but if EnviroBlend is kept completely dry with no
moisture exposure, it could last up to 6 months. However, any hydration could compromise
chemical effectiveness, so it is best to purchase product as needed, and not for long term
storage.

For additional information about EnviroBlend products for environmental treatment
applications, please contact Charis Gehret at [e-mail].

Bench Scale Treatability Study Form

Sample labeled as: ______________ Anticipated Sample Arrival Date: ______________

Sample shipping address: Enclose form in the box and Email completed form to:
URSUS
1204 Springdale St. [e-mail]
Mount Horeb, WI 53572
[phone]

Premier Contact:
Customer Name/Location:
Contact Name/phone and
Email:
Type of Industry:
Dust, Sand or Metals
Source/Location Name:
Metal(s) of Concern:
Note:
Required Regulatory
Goals:
(check each that applies)

Metals/Test TLCP TCLP/UTS SPLP STLC MEP Other (List)
Lead
Arsenic
Cadmium
Zinc
Chromium
Nickel

Current Product Used:
Current Dosage Rate:
Special Instructions:

SAFETY DATA SHEET
1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY/UNDERTAKING
Product identifier
Product Name ENVIROBLENDÒ CS
Other means of identification
Product Code ENVIROBLENDÒ CS
Synonyms None
Recommended use of the chemical and restrictions on use
used for heavy metals remediation.
Uses advised against No information available
Details of the supplier of the safety data sheet
Emergency telephone number
24 Hour Emergency Phone Number Chemtrec 1-800-424-9300
Emergency Telephone Chemtrec 1-800-424-9300
2. HAZARDS IDENTIFICATION
Classification
OSHA Regulatory Status
Product dust is classified as a "nuisance particulate, not otherwise regulated" as specified by ACGHI and OSHA. The excessive,
long-term inhalation of mineral dusts may contribute to the development of industrial bronchitis, reduced breathing capacity, and
may lead to the increased susceptibility to lung disease. Contact with water may cause product to swell, generate some heat and
burst its container. Low toxicity.
Not a dangerous substance or mixture according to the Globally Harmonized System (GHS)
Label elements
Emergency Overview
Causes mild irritation to the eyes
Low toxicity by skin contact.
Chronic overexposure by inhalation of airborne particulate may irritate upper respiratory system as well as the throat.
Ingestion is an unlikely route of exposure. If ingested in large amounts it may cause irritation, nausea, vomiting, diarrhea,
abdominal pain, black stool, pink urine, coma and possibly death.
Hazards not otherwise classified (HNOC)
Other Information
Unknown Acute Toxicity 100% of the mixture consists of ingredient(s) of unknown toxicity
Manufacturer Address
The product contains no substances which at their given concentration, are considered to be hazardous to health
_____________________________________________________________________________________________
Appearance Fine powder to fine granular
Page 1 / 7
Physical state Solid Odor Odorless
Issue Date 02-Dec-2014 Revision Date 24-March-2017 Version 1
Premier Magnesia, LLC, 75 Giles Place, Waynesville, NC 28786
Company Phone Number 828-452-4784
Recommended Use A specialty blend of magnesium oxide, magnesium hydroxide
_____________________________________________________________________________________________
3. COMPOSITION/INFORMATION ON INGREDIENTS
Chemical Name CAS No.Weight-%Trade Secret
Magnesium Oxide 1309-48-4 70
Magnesium Hydroxide 1309-42-8 30
4. FIRST AID MEASURES
First aid measures
Eye contact Rinse thoroughly with plenty of water, also under the eyelids.
Skin Contact Wash with soap and water. Low toxicity by skin contact.
Inhalation Move victim to fresh air. If breathing has stopped, give artificial respiration. Get medical
attention immediately.
Ingestion Ingestion is an unlikely route of exposure. If ingested in sufficient quantity and victim is
conscious, give 1-2 glasses of water or milk. Never give anything by mouth to an
unconscious person. Leave decision to induce vomiting to qualified medical personnel,
since particles may be aspirated into the lungs. Seek immediate medical attention.
Most important symptoms and effects, both acute and delayed
Symptoms No information available.
Indication of any immediate medical attention and special treatment needed
Note to physicians Treat symptomatically.
5. FIRE-FIGHTING MEASURES
Suitable extinguishing media
Use extinguishing measures that are appropriate to local circumstances and the surrounding environment.
Unsuitable extinguishing media Water reacts with magnesium oxide producing magnesium hydroxide and heat. Do not
allow water to get inside containers: reaction with water will cause product to swell,
generate heat, and burst its container. If contact is unavoidable, use sufficient water to
safely absorb the heat that may be generated.
Specific hazards arising from the chemical
No information available.
Explosion data
Sensitivity to Mechanical Impact None.
Sensitivity to Static Discharge None.
Protective equipment and precautions for firefighters
Firefighters should wear NIOSH approved, positive pressure, self-contained breathing apparatus and full protective clothing when
appropriate.
6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protective equipment and emergency procedures
_____________________________________________________________________________________________
Personal precautions Ensure adequate ventilation, especially in confined areas.
Page 2 / 7
Environmental precautions
ENVIROBLENDÒ CS Revision Date 24-March-2017
_____________________________________________________________________________________________
Environmental precautions See Section 12 for additional ecological information.
Methods and material for containment and cleaning up
Methods for containment Prevent further leakage or spillage if safe to do so.
Methods for cleaning up Carefully clean up and place material into a suitable container, being careful to avoid
creating excessive dust. If conditions warrant, clean up personnel should wear approved
respiratory protection, gloves and goggles to prevent irritation from contact and/or
inhalation.
7. HANDLING AND STORAGE
Precautions for safe handling
Advice on safe handling Use personal protective equipment as required.
Conditions for safe storage, including any incompatibilities
Storage Conditions Keep container tightly closed in a dry and well-ventilated place. Avoid generation of dust.
Do not allow water to get inside containers; reaction with water will cause product to swell,
generate heat and burst its container. Exposed, unprotected magnesium oxide will absorb
moisture and carbon dioxide from the air.
Incompatible materials Magnesium Oxide component is soluble in aqueous acids generating heat and steam;
violent reaction or ignition with interhalogens (e.g., bromine pentifluoride; chlorine
trifluoride). Incandescent reaction with phosphorus pentachloride.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Control parameters
Exposure Guidelines This product, as supplied, does not contain any hazardous materials with occupational
exposure limits established by the region specific regulatory bodies.
Chemical Name ACGIH TLV OSHA PEL NIOSH IDLH
Magnesium Oxide
1309-48-4
TWA: 10 mg/m3 inhalable fraction TWA: 15 mg/m3 fume, total
particulate
(vacated) TWA: 10 mg/m3 fume
and total particulate
IDLH: 750 mg/m3 fume
NIOSH IDLH Provide workers with NIOSH approved respirators in accordance with requirements of 29 CFR 1910. 134 for level of
exposure incurred.
Appropriate engineering controls
Engineering Controls Provide sufficient ventilation, in both volume and air flow patterns to control mist/dust
concentrations below allowable exposure limits. Showers. Eyewash stations.
Individual protection measures, such as personal protective equipment
Eye/face protection Avoid contact with eyes. The use of eye protection is recommended.
Skin and body protection The use of eye protection, gloves and long sleeve clothing is recommended.
Respiratory protection Provide workers with NIOSH approved respirators in accordance with requirements of 29
CFR 1910. 134 for level of exposure incurred.
General Hygiene Considerations
_____________________________________________________________________________________________
Wash hands thoroughly after handling.
9. PHYSICAL AND CHEMICAL PROPERTIES
Page 3 / 7
Information on basic physical and chemical properties
ENVIROBLENDÒ CS Revision Date 24-March-2017
_____________________________________________________________________________________________
Physical state Solid
Explosive properties No information available
Oxidizing properties No information available
Other Information
Softening point No information available
Molecular weight No information available
VOC Content (%)No information available
Density No information available
Bulk density 70-80lb/ft3
10. STABILITY AND REACTIVITY
Reactivity
Chemical stability
Stable under recommended storage conditions.
Possibility of Hazardous Reactions
None under normal processing.
Hazardous polymerization Hazardous polymerization does not occur.
Conditions to avoid
Extremes of temperature and direct sunlight.
Incompatible materials
Magnesium Oxide component is soluble in aqueous acids generating heat and steam; violent reaction or ignition with interhalogens
(e.g., bromine pentifluoride; chlorine trifluoride). Incandescent reaction with phosphorus pentachloride.
Hazardous Decomposition Products
Heat and steam.
11. TOXICOLOGICAL INFORMATION
Appearance Fine powder to fine granular Odor Odorless
Color Brownish Odor threshold No information available
Property Values Remarks • Method
pH 10-11
Melting point/freezing point Melting pt >2100 °C Melting pt >3800
°F
Boiling point / boiling range No information available
Flash point No information available
Evaporation rate Not Applicable
Flammability (solid, gas)No information available
Flammability Limit in Air
Upper flammability limit:No information available
Lower flammability limit:No information available
Vapor pressure No information available
Vapor density No information available
Specific Gravity 3.56 g/cc
Water solubility Slight <1%
Solubility in other solvents No information available
Partition coefficient No information available
Autoignition temperature No information available
Decomposition temperature No information available
Kinematic viscosity
_____________________________________________________________________________________________
No information available
Dynamic viscosity No information available
Page 4 / 7
No data available
ENVIROBLENDÒ CS Revision Date 24-March-2017
_____________________________________________________________________________________________
Information on likely routes of exposure
Product Information Magnesium Oxide # 1309-48-4 Magnesium Hydroxide #1309-42-8 Product does not
present an acute toxicity hazard based on known or supplied information.
Inhalation Inhalation of fume (not MgO dust particulate) produced upon decomposition of magnesium
compounds can produce a febrile reaction and leukocytosis in humans.
Eye contact Irritating to eyes.
Skin Contact Low toxicity by skin contact.
Ingestion Ingestion is an unlikely route of exposure. If ingested in large amounts it may cause
irritation, nausea, vomiting, diarrhea, abdominal pain, black stool, pink urine, coma and
possibly death.
Chemical Name Oral LD50 Dermal LD50 Inhalation LC50
Magnesium Hydroxide
1309-42-8
= 8500 mg/kg ( Rat )--
Information on toxicological effects
Symptoms No information available.
Delayed and immediate effects as well as chronic effects from short and long-term exposure
Sensitization No information available.
Germ cell mutagenicity No information available.
Carcinogenicity No information available.
Reproductive toxicity No information available.
STOT - single exposure No information available.
STOT - repeated exposure No information available.
Aspiration hazard No information available.
Numerical measures of toxicity - Product Information
Unknown Acute Toxicity 100% of the mixture consists of ingredient(s) of unknown toxicity
12. ECOLOGICAL INFORMATION
Ecotoxicity
No data available on any adverse effects of this material on the environment
100% of the mixture consists of components(s) of unknown hazards to the aquatic environment
Persistence and degradability
No information available.
Bioaccumulation
No information available.
Other adverse effects No information available
_____________________________________________________________________________________________
13. DISPOSAL CONSIDERATIONS
Waste treatment methods
Page 5 / 7
Disposal of wastes This product does not exhibit any characteristics of a hazardous waste. The product is
suitable for landfill disposal. Follow all applicable federal, state and local regulations for safe
disposal.
ENVIROBLENDÒ CS Revision Date 24-March-2017
_____________________________________________________________________________________________
Contaminated packaging Do not reuse container.
14. TRANSPORT INFORMATION
DOT Not regulated Not regulated by DOT as a hazardous material. No hazard class, label or
placard required, no UN or NA number assigned.
15. REGULATORY INFORMATION
International Inventories
TSCA Complies
Chemical Name TSCA DSL/NDSL EINECS/ELI
NCS
ENCS IECSC KECL PICCS AICS
Magnesium Oxide X X X X X X X X
Magnesium
Hydroxide
X X X X X X X X
X - Listed
TSCA - United States Toxic Substances Control Act Section 8(b) Inventory
DSL/NDSL - Canadian Domestic Substances List/Non-Domestic Substances List
EINECS/ELINCS - European Inventory of Existing Chemical Substances/European List of Notified Chemical Substances
ENCS - Japan Existing and New Chemical Substances
IECSC - China Inventory of Existing Chemical Substances
KECL - Korean Existing and Evaluated Chemical Substances
PICCS - Philippines Inventory of Chemicals and Chemical Substances
AICS - Australian Inventory of Chemical Substances
US Federal Regulations
SARA 313
This product does not contain any substances reportable under Sections 302, 304 or 313. Sections 311 and 312 do apply. (Routine
Reporting and Chemical Inventories)
SARA 311/312 Hazard Categories
Acute health hazard No
Chronic Health Hazard No
Fire hazard No
Sudden release of pressure hazard No
_____________________________________________________________________________________________
Reactive Hazard No
CWA (Clean Water Act)
This product does not contain any substances regulated as pollutants pursuant to the Clean Water Act (40 CFR 122.21 and 40
CFR 122.42)
Page 6 / 7
CERCLA
This material, as supplied, does not contain any substances regulated as hazardous substances under the Comprehensive
Environmental Response Compensation and Liability Act (CERCLA) (40 CFR 302) or the Superfund Amendments and
Reauthorization Act (SARA) (40 CFR 355). There may be specific reporting requirements at the local, regional, or state level
pertaining to releases of this material
ENVIROBLENDÒ CS Revision Date 24-March-2017
_____________________________________________________________________________________________
US State Regulations
California Proposition 65
This product does not contain chemicals known to the State of California to cause cancer, birthdefects or other reproductive toxins.
U.S. State Right-to-Know Regulations
Chemical Name New Jersey Massachusetts Pennsylvania
Magnesium Oxide 1309-48-4 X X X
U.S. EPA Label Information
EPA Pesticide Registration Number Not Applicable
16. OTHER INFORMATION
Issue Date 02-Dec-2014
Revision Note
No information available
Disclaimer
at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing,
storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The
information relates only to the specific material designated and may not be valid for such material used in combination
with any other materials or in any process, unless specified in the text.
End of Safety Data Sheet
NFPA Health hazards 1 Flammability 0 Instability 0
_____________________________________________________________________________________________
Physical and Chemical
Properties -
HMIS Health hazards 0 Flammability 0
Page 7 / 7
Physical hazards 0 Personal protection X
ENVIROBLENDÒ CS Revision Date 24-March-2017
Revision Date 24-March-2017
The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief
Free Flow—Rockford, LLC. • 4920 Forest Hills Rd, Suite 200 • Loves Park, IL 61111
Phone: [phone] • Fax: [phone]
www.freeflowtech.com
FF-200®
SPECIFICATIONS SHEET
FF-200®
Free Flow 200 (FF-200®) chemistry has proven to be an effective and economical alternative
to traditional blends for lead stabilization in soils and sludges. FF-200 is easy to handle in the
field and provides effective non-reversing fixation of the lead at low dosages. It has been
used effectively in diesel-fuel spill clean-ups and additionally as a fast-acting absorbent on
airport runways for hydraulic oil. The fine texture of FF-200® allows penetration in the open
cracks and crevices of concrete or asphalt and quick absorption of oils or fuel, leaving a non-
slick surface.
Physical Properties
 Molecular Formula: Mixture
 Appearance: White gray powder
 Specific Gravity: 2.6
 pH: 12.0
 Flashpoint: Noncombustible
 Odor: None
 Loss on Ignition: 0.8 percent
Advantages
 Custom Blending / Packaging
 User Friendly Chemistries
 Cost Effectiveness
Typical Sieve Analysis %
Passing 20 Mesh 95%
Passing 40 Mesh 87%
Passing 100 Mesh 35%
Passing 200 Mesh 15%
 Effective for oil spill cleanup
 Reduced application rate
 Absorbs quickly
Free
Flow
Technologies, Ltd. FF-200 Chemistry
Free Flow 200® is a proprietary blend of stabilizing reagents that fixate heavy metals
in waste or soil across a wide range of pH conditions using a combination of sulfate,
carbonate and hydroxide precipitation chemistry.

How It Works
When moisture comes into contact with soil or waste stabilized with Free Flow 200®,
soluble sulfates are immediately released to initiate fixation reactions with lead and
barium by the following reactions:
Pb+2(aq) + SO4-2(aq) → PbSO4 (s) Ksp = 1.6 x 10-8
Ba+2(aq) + SO4-2(aq) → BaSO4 (s) Ksp = 1.1 x 10-10
The sulfate reaction is a preliminary sweep reaction that precipitates the most soluble
lead with the soluble sulfate anion.
Precipitation of remaining lead and other heavy metals proceeds by slow-release car-
bonate and hydroxide components that react with acidity and heavy metals to further
fixate the metals via the reaction shown below:
Pb+2 (aq) + 2 OH- (aq) → Pb(OH)2 (s) Ksp = 1.2 x 10-15
Although the above reactions are described for lead, the reagent performs similar for
fixation of other heavy metals such as cadmium, trivalent chromium, cobalt, copper,
nickel, silver, and zinc. Through a combination of the chemical reactions described
above, Free Flow 200® is able to stabilize heavy metals in soil and waste across a wide
range of pH values to meet the objectives of the SPLP or TCLP in remediation
applications.
Free Flow Technologies, Ltd. • 4920 Forest Hills Rd • Suite 200 • Loves Park, IL 61111
Phone: [phone] • Fax: [phone]
www.freeflowtech.com

SDS – FF-100® - 200® - 300® – Page 1

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company
SAFETY DATA SHEET (SDS)
OSHA Hazard Communication Standard 29 CFR 1910.1200. Prepared to GHS

Trade Name: Free Flow 100®, Free Flow 200®, Free Flow 300®
Product CAS: None

Recommended use: Stabilize RCRA Metals

Company Identification:
Free Flow Technologies, Inc. For information call: [phone]
4920 Forest Hills Rd, Suite 200 Emergency Contact: Timothy Danzer
Loves Park, Illinois 61111 Fax: [phone]

GHS07 Acute Toxicity
Classification of the substance:
 H303 Acute Toxicity, category 5 (oral)
 H313 Acute Toxicity, category 5 (dermal)
 H332 Acute Toxicity, category 4 (inhalation)
 H315 Skin, eye irritation, category 2
 H317 Skin sensitization, category 1
 H335 Specific Target Organ Toxicity, category 3 (single exposure, respiratory tract irritation)

WARNING

Hazard Statements:
 H303 May be harmful if swallowed
 H313 May be harmful in contact with skin
 H332 Harmful if inhaled
 H315 Causes skin irritation
 H317 May cause an allergic skin reaction
 H335 May cause respiratory irritation

Precautionary Statements:
Prevention P261 Avoid breathing dust.
P264 Wash hands thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P272 Contaminated work clothing should not be allowed out of the workplace.

SECTION 1 – PRODUCT AND COMPANY IDENTIFICATION
SECTION 2 – HAZARD(S) IDENTIFICATION

SDS – FF-100® - 200® - 300® – Page 2

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

Prevention cont. P280 Wear protective gloves, safety glasses, and protective clothing such as long
sleeves and pant cuffs over shoes to minimize skin contact.

Response P302+P352 IF ON SKIN: Wash with plenty of soap and water.
P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position
comfortable for breathing.
P312 Call a POISON CENTER or doctor/physician if you feel unwell.
P321 Specific treatment, see supplemental first aid information.
P332+P313 If skin irritation occurs: Get medical advice/attention.
P362+P364 Take off contaminated clothing and wash it before reuse.

Storage/Disposal P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P501 Dispose of container in accordance with local, regional, national, and/or
international regulations.

Hazards Ratings HMIS

Chemical Name CAS Approx.
% (w/w)
LD50 LC50
Phosphate Compounds 7758-23-8 0 - 80 Not Available Not Available
Calcium Oxide 1305-78-8 10 - 70 Not Available Not Available
Sulfur Trioxide 7446-11-9 0 - 40 Not Available Not Available
Silicon Dioxide 60676-86-0 2.5 – 15 Not Available Not Available
Aluminum Oxide – Non-fibrous 1344-28-1 0.5 - 5 Not Available Not Available
Iron Oxide 1309-37-1 0.5 - 5 Rat, oral, >5000 mg/kg Not Available
Sodium Bicarbonate 144-55-8 0 - 70 Mouse, oral, 3360 mg/kg Not Available
Magnesium Oxide 1309-48-4 0 - 60 Not Available Not Available
SECTION 3 – COMPOSITION, INFORMATION ON INGREDIENTS
SECTION 2 – HAZARD(S) IDENTIFICATION (CONT.)
(CONT.)
1

SDS – FF-100® - 200® - 300® – Page 3

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

After Eye Contact: Flush eyes with water while lifting lids. Seek medical attention.

After Skin Contact: Wash skin with soap and water, remove contaminated clothing and shoes. If irritation
develops, seek medical attention.

After Ingestion: Dilute with water, fruit juice or vinegar. Seek medical attention.

After Inhalation: Remove to fresh air, if irritation develops, seek medical attention.

Most important symptoms and effects, both acute and delayed.
Refer to Section 11 – Toxicological Information

Indication of any immediate medical attention and special treatment needed.
All treatments should be based on observed signs and symptoms of distress in the patient. Consideration should be
given to the possibility that overexposure to materials other than this product may have occurred.

Suitable extinguishing equipment:
This material is noncombustible.

Extinguishing equipment that is not appropriate for a particular situation:
Do not use water on adjacent fires. Extinguish adjacent fires with dry chemical or CO2.

Specific hazards that develop from the chemical during the fire:
No specific hazards are identified.

Protective equipment or precautions for firefighters:
No special measures required.

Personal precautions, protective equipment and emergency procedures:
Wear protective equipment to prevent skin exposure and inhalation. Keep unprotected persons away.

Environmental Precautions:
Avoid runoff to waterways and sewers.

Methods and materials used for containment and cleanup:
Use appropriate protective equipment while using dry cleanup methods (sweep/shovel) which minimize dusting.
Reclaim in watertight containers. Small amounts may be flushed with water to drain.
SECTION 4 – FIRST AID MEASURES
SECTION 5 – FIRE FIGHTING MEASURES
SECTION 6 – ACCIDENTAL RELEASE MEASURES

SDS – FF-100® - 200® - 300® – Page 4

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

Precautions for safe handling:
Swells when wet, may expand the container. Keep eyewash bottles available throughout work area.

Conditions for safe storage, including any incompatibilities:
Store away from water or acids.

Control Parameters
Component Formula CAS PEL TLV _
Phosphate Compounds Ca(H2PO4)2H2O 7758-23-8 Not established Not established
Calcium Oxide CaO 1305-78-8 5 mg/m3 2 mg/m3
Sulfur Trioxide SO3 7446-11-9 1 mg/m3 0.2 mg/m3
Silicon Dioxide** SiO2 60676-86-0 0.1 mg/m3* 0.1 mg/m3*
Aluminum Oxide Al2O3 1344-28-1 10 mg/m3+ 10 mg/m3+
Iron Oxide** Fe2O3 1309-37-1 15 mg/m3 5 mg/m3
Sodium Bicarbonate NaHCO3 144-55-8 15 mg/m3* 10 mg/m3*
Magnesium Oxide MgO 1309-48-4 15 mg/m3* 10 mg/m3*

* Respirable Dust
+ 5 mg/M3 as Respirable Fraction
**Silicon Dioxide and Iron Oxide are listed by IARC as potential carcinogens.

Exposure Controls
Engineering Controls:
Use general and local exhaust to keep dust levels within acceptable limits.

Personal Protective Equipment Pictograms:

Breathing Protection:
Use NIOSH approved dust respirator when exposure limits exceeded.
Hand Protection:
Wear gloves to minimize skin contact.
Eye Protection:
Wear tight fitting goggles.
Skin Protection:
Wear long sleeves, gloves, and pant cuffs over shoes to minimize skin contact.

SECTION 8 – EXPOSURE CONTROLS AND PERSONAL PROTECTION
SECTION 7 – HANDLING AND STORAGE

SDS – FF-100® - 200® - 300® – Page 5

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

Appearance: White-gray powder. Boiling Point: N/A
Odor: Odorless Flammable, Lower Limit: N/A
Odor Threshold: N/A Flammable, Upper Limit: N/A
Solubility: N/A Flash Point: N/A
Partition Coefficient: Not determined. Auto Ignition Temperature: N/A
pH: 6.0 – 12.0 Freezing/Melting Point: N/A
Density: 80 – 85 lbs/ft3 Viscosity: N/A
Vapor Pressure: N/A Decomposition Temp.: N/A
Vapor Density: N/A Evaporation Rate: N/A
Molecular Formula: Mixture

Reactivity:
No dangerous reactions known under conditions of normal use.

Chemical Stability:
Stable, keep dry.

Thermal decomposition/conditions to be avoided:
Avoid extreme temperatures.

Possibility of hazardous reactions:
Contains calcium oxide and may react with water or acid to produce heat.

Incompatible materials:
Water, strong acids.

Toxicological Effects
Component Formula LD50 LC50 _
Phosphate Compounds Ca(H2PO4)2H2O Not Available Not Available
Calcium Oxide CaO Not Available Not Available
Sulfur Trioxide SO3 Not Available Not Available
Silicon Dioxide** SiO2 Not Available Not Available
Aluminum Oxide Al2O3 Not Available Not Available
Iron Oxide** Fe2O3 rat, oral, >5000 mg/kg Not Available
Sodium Bicarbonate NaHCO3 mouse, oral, 3360 mg/kg Not Available
Magnesium Oxide MgO Not Available Not Available
**Silicon Dioxide and Iron Oxide are listed by IARC as potential carcinogens.
SECTION 9 – PHYSICAL AND CHEMICAL PROPERTIES
SECTION 10 – STABILITY AND REACTIVITY
SECTION 11 – TOXICOLOGICAL INFORMATION

SDS – FF-100® - 200® - 300® – Page 6

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

Routes of exposure
Absorbed through skin. Dermal contact. Eye contact. Inhalation. Ingestion.

Potential health effects
Eye: Acute: May cause mild eye irritation
Chronic: No data available

Skin: Acute: Causes skin irritation
Chronic: Repeated and prolonged exposure may cause dermatitis

Ingestion: Acute: May cause irritation
Chronic: No data available

Inhalation: Acute: May cause respiratory irritation
Chronic: No data available

Symptoms from exposure
Target Organs: Eyes, respiratory passages, skin, digestive tract. Pre-existing respiratory diseases including
asthma and emphysema may also be aggravated.

Eye: May cause irritation/inflammation and tissue damage.

Skin: May cause irritation to moist skin.

Ingestion: May cause ulceration to the digestive tract.

Inhalation: May cause irritation/inflammation to nasal and upper respiratory passages.

Toxicity:
No further relevant information available.

Persistence and degradability:
No further relevant information available.

Bioaccumulative potential:
No further relevant information available.

Mobility in soil:
No further relevant information available.

SECTION 12 – ECOLOGICAL INFORMATION
SECTION 11 – TOXICOLOGICAL INFORMATION (CONT.)

SDS – FF-100® - 200® - 300® – Page 7

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

Recommended Waste Treatment Methods:
No treatment necessary.

Recommended Package Disposal:
Dispose of in container in accordance with local, regional, national, and/or international regulations.

UN Number: N/A
UN proper shipping name: N/A
Transport Hazard class: N/A
Packing group number: N/A
Environmental hazards: N/A
Special Precautions: To prevent dust, cover product with tarp if not in bulk bag container.

SARA Title III - Section 302 Extremely Hazardous Material - None

SARA Title III – Section 31/312 – Hazard Categories:
Fire Hazard – No
Sudden Release of Pressure – No
Reactivity Hazard – Yes
Immediate Health Hazard – Yes
Delayed Health Hazard - Yes

SARA Title III – Section 313 - This material is not subject to the toxic chemical reporting requirements of Section
313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 and 40
CFR Part 372.

Information herein is based on data believed to be accurate at the time of the preparation. No warranty or
representation, express or implied, is made to the accuracy or completeness of the SDS. No responsibility can be
assumed by vendor for any damage or injury resulting from misuse, failure to follow recommended practices, or
from any hazards inherent in the nature of the product.

SECTION 13 – DISPOSAL CONSIDERATIONS
SECTION 14 – TRANSPORT INFORMATION
SECTION 15 – REGULATORY INFORMATION
SECTION 16 – ADDITIONAL INFORMATION

SDS – FF-100® - 200® - 300® – Page 8

Free Flow -
Rockford, L.L.C.
A Free Flow Technologies, Ltd. Company

SDS Effective: 12/1/2014

SECTION 16 – ADDITIONAL INFORMATION (CONT.)