WI0600138_MISC._20140708

FloMag H MSDS
S 26
S 36
In Case Of Contact With Eyes, Rinse Immediately With
Plenty Of Water and Seek Medical Advice.
Wear Suitable Protective Clothing.
S 39 Wear Eye/Face Protection.
Page 8 of 8
SOURCES USED_, ACGIH 2O00; RTECS June 1998; Sax - 8Lh Ed.; Ind. Exposure & Control
Tcchn. for OSHA Regulated Substances - MgO (fume), March, 1989, pp. 1181-1184;
NIOSH Occupational Health Guide for Chemical Substances - Vol. II, September, 1978.
http://www.magspecialties.com/MSDS/mgoh-slurry-msds.asp?MsdsNo=29 1/13/2005
IMPORTANT. Why Brenmagbelieve stheinformation contained herein tobe accurate, Brenntagmakesnorepresentation orwarranty express
orimplied,regarding,andassumesnoliabiidyfor,the accuracy or completeness ofthe information. The Buyer assume selite sponsility

FloMag H MSDS Page 7 of 8
under OSHA's Hazard Communication Standard at 29 CFR
therefore is subject to Tier I and/or Tier II annual
SecLion 313 - Emission Reoorting - This notification
from this MSDS and any copying and redistribution of
include this notice, as required by 40 CFR part 372:
1910.1200, and
inventory reporting.
must not be detached
this MSDS must
Magnesium hydroxide is not subject to Form R reporting
requirements.
Section _302-..Extremely Hazardous Substances: Magnesium hydroxide is noL
listed.
US CLEAN AIR ACT:
This product complies in all respects to the requirements of Section 611 of Title
VI (Stratospheric Ozone Depletion) of the Clean Air Act as amended 1990; namely,
that the product neither contains, nor is "manufactured with" (as defined by U.S.
EPA) any Class I or Class II Ozone Depleting Substances listed in Title VI, and
therefore is not required to carry the warning stated as dictated in the amended
Act.
STATE LISTS -- Magnesium Hydroxide is NOT listed on any of the following state
lists:
California - Directors List of Hazardous Substances (8 CCR 339)
Florida Hazardous Substance List
Illinois Right -to -Know Toxic Substances List
Massachusetts Right To Know List
Minnesota Hazardous Substance List
NJ Department of Health RTK List
Pennsylvania Right Lo Know List
Rhode Island Hazardous Substance List
INTERNATIONAL REGULATORY INFORMATION:
EU DIRECTIVES:
• Dangerous Substance Directive 67\548.
• Dangerous Preparations Directive 88\379.
APPROVED CODE OF PRACTICE: Classification and Labelling of Substances
Preparations Dangerous for Supply.
SECTION XVI: OTHER INFORMATION
and
NFPA Ratings: Health: 1 Flammability: 0 Reactivity: 0 Other: <blank>
RMIS Ratings:, Health: 1 Flammability: 0 Reactivity: 0 PPE: J
SAFETY & RISK PHRASES:
R 20/22 Harmful By Inhalation And If Swallowed.
R 36/37/38 Irritating To Eyes, Respiratory System And Skin.
httpi/www.magspecialties.com/MSDS/mgoh-slurry-msds.asp?MsdsNo=29
1/13/2005
IMPORTANT Wlule Bremdag believesthe information contained herein to be accurate,Brenntagmakesnorepresentation or warranty express
orimplied,regarding, and assumesnoliabilityfor,the accuracy or completeness ofthe information. The Buyer assumesailresponsb:tty

FloMag H MSDS Page 6 of 8
either by listing or by characteristic. However, under RCRA, it is the
responsibility of the product user to determine at the time of disposal, whether a
material containing the product or derived from the product should be classified as
a hazardous waste. (40 CFR 261.20-24)
SECTION XIIII: TRANSPORT INFORMATION
DOT SHIPPING NAME: Not regulated under DOT DOT CLASS,: Not applicable
SPECIAL SHIPPING INFORMATION: No special precautions. For further information,
refer to -
• Handling & Storage (Section VII)
• Stability & Reactivity (Section X)
SECTION XV: REGULATORY INFORMATION
All of the ingredient(s) contained in this product are included on the following
inventory and/or regulatory lists:
Australian Inventory of Chemical Substances (ACIS): Magnesium hydroxide (1309-42-8)
Canada - Domestic Substance List (DSL): Magnesium hydroxide (1309-42-8)
Canada - WHMIS: Ingredient Disclosure List - Magnesium hydroxide (Not listed)
European Inventory of Existing Commercial Chemical Substances (EINECS): Magnesium
hydroxide (215-170-3)
Japan - Existing and New Chemical Substances (ENCS) - Magnesium hydroxide (1-386)
Korea - Existing and Evaluated Chemical Substances (KECL) - Magnesium hydroxide
(XE-22716)
Philippines Inventory of Chemicals and Chemical Substances (PICCS) - Magnesium
hydroxide (present)
Swiss Giftliste 1 (List of Toxic Substances 1), 31 May 1999 - Magnesium hydroxide
(G-8166) Toxic Category 4: Acute oral lethal dose of 500 - 2000 mg/kg.
U.S. Toxic Substances Control Act (TSCA) 8(b)Inventory List: Magnesium hydroxide
(1309-42-8)
US REPORTING REQUIREMENTS:
CERCLA Hazardous Substance: No
SARA Title III:
Section 311/312 - Categories: Magnesium hydroxide - Acute hazard
(nuisance dust if allowed to dry out)
Section 312 - Inventory Reporting: Although not specifically listed,
magnesium hydroxide does meet the definition of a hazardous material
http://www.magspecialties.com/MSDS/mgoh-slurry-msds.asp?MsdsNo=29 1/13/2005
IMPORTANT. While Brenntag believe sthe information contained herein to be accurate,Brenntagmakesno representation or warranty express
orimpled,regarding, and assumesno liability for,the accuracy or completeness ofthe information The The Buyer as&nncsaflresponsbthty

FloMag H MSDS
Page 5 of 8
SECTION IX: PHYSICAL & CHEMICAL PROPERTIES
APPEARANCE AND.ODOR: Milky white aqueous
BOILING POINT (F): 212 F (100 C)
pH: -10 saturated sol
% VOLATILE (by VOL): 40 - 45%
VAPOR DENSITY: Not applicable
SOLUBILITY IN WATER: Slightly soluble
PHYSICAL STATE: Aqueous slurry
slurry; no odor
FREEZE POINT (F): Not applicable
VAP PRESS (mm Hg): Not determined
SPEC GRAV: 1.48 to 1.62
EVAPOR RATE: Not applicable
ODOR THRESH (ppm): Not determined
OIL/WATER COEFFIC: Not applicable
SECTION X: STABILITY & REACTIVITY
STABLE: Yes
CONDITIONS OF REACTIVITY_ Will react with incompatibles (see below)
CONDITIONS OF CHEMICAL INSTABILITY: Stable under ambient temperatures and
pressures.
INCOMPATIBILITY (MATERIALS TO AVOID): ACID (Strong) - vigorous reaction, heat
generated; MALEIC ANHYDRIDE - Alkali and other alkaline earth compounds, including
magnesium compounds, will cause explosive decomposition; PHOSPHORUS - when boiled
with alkaline hydroxides yields mixed phosphines which may ignite spontaneously in
air.
HAZARDOUS DECOMPOSITION PRODUCTS: Steam, acrid smoke and trace amounts of carbon
dioxide, carbon monoxide and nitrous oxides. If magnesium hydroxide is heated to
the point of volatilization (i.c., >1700°C), magnesium oxide FUMES may be
generated.
IS THIS PRODUCT SUBJECT TO POLYMERIZATION? No
CONDITIONS UNDER WHICH PRODUCT WILL POLYMERIZE: None known.
SECTION XI: TOXICOLOGICAL INFORMATION
ROUTES OF ENTRY - SKIN CONTACT: Yes SKIN ABSORPTION: No
EYE CONTACT: Yes INHALATION: Yes INGESTION: Yes
NAME OF TOXICOLOGICALLY SYNERGISTIC PRODUCTS: None known.
IRRITANCY OF PRODUCT: No data available.
REPRODUCTIVE TOXIN? No TERATOGEN? No
MUTAGEN? No SENSITIZER? No
CONSIDERED CARCINOGENIC BY - NTP? No IARC? No OSHA? No
No data available.
Dispose according
SECTION XII: ECOLOGICAL INFORMATION
SECTION XIII: DISPOSAL CONSIDERATIONS
to local, state/provincial and federal regulations.
If discarded in its purchased form, this product would not be hazardous
http://www.magspecialties.com/MSDS/mgoh-slurry-msds.asp?MsdsNo=29
waste
1/13/2005
IMPORCANT. While Brermtag believe sthe information contained herein to be accurate,Brenntagmakesno representation or warrantyexpress
orimplied,regard ng,and asstnnesnoliabiityfor,the accuracy or compbtenessofthe information. The Buyer asstunesallresponsNity

FloMag H MSDS Page 4 of 8
8 Hour Occupational Exposure Limit Magnesium oxide fume as Mg: 10 mg/m3
TWA
Canada - British Columbia -
15 Minute Exposure Limits Magnesium oxide fume 10 mg/m3
8 Hour Exposure Limits Magnesium oxide fume as Mg;
Total dusts: 10 mg/m3 TWA;
Respirable dust and fumes: 3 mq/m3 TWA
Canada - Ontario -
OHSA - TWAEVs Magnesium oxide fume 10 mg/m3 TWAEV
Proposed Occupational STEVs 5 mg/m3 STEV
Canada - Quebec - Magnesium oxide fume
Time -Weighted Average Exposure Magnesium oxide fume as Mg: 10 mg/m3 TWAEV
German (DFG) -
MAK Values Magnesium oxide fume respirable fraction: 1.5 mg/m3 MAK
(includes magnesium oxide fume)
Peak Limitations Magnesium oxide fume 2 x normal MAK (30 min. average
value); don't exceed 4 times during shift; half-life <2h
Israel -
Action Levels Magnesium oxide fume 5 mg/m3 AL
Time Weighted Averages Magnesium oxide fume 10 mg/m3 TWA
Mexico - Instruction No. 10 - TWAs Magnesium oxide fume 10 mg/m3 TWA
US - OSHA -
Final PELs: Time Weighted Average Magnesium oxide fume total particulate:
15 mg/m3 TWA
Vacated PELs: Time Weighted Avg Magnesium oxide fume total particulate:
10 mg/m3 TWA
United Kingdom -
Occupational Exposure Standard:STEL Magnesium oxide fume fume and
respirable dust, as Mg: 10 mg/m3 STEL
Occupational Exposure Standards:TWA Magnesium oxide fume fume and
respirable dust, as Mg: 5 mg/m3 TWA; total inhalablc dust, as Mg: 10
mg/m3 TWA
http://www.magspecialties.com/MSDS/mgoh-slurry-msds.asp?MsdsNo=29 1/13/2005
IMPORTANT While BrenntagbeRevesthe information contained herein to be accurate,Brenntag malcesno representation or warrant-34 express
orimpled,regarding, and assmtiesno liabHdyfor,the accuracy or completeness ofthe infonnatioh The Buyer assume safire sponsibildy

FloMag H MSDS Page 3 of 8
SECTION VIII: EXPOSURE CONTROLS / PERSONAL PROTECTION
SPECIFIC ENGINEERING CONTROLS: Local and general mechanical dust collection and
ventilation in accordance with good engineering practices should be provided to
maintain dust levels below permissible exposure levels specified in Section VIII.
PERSONAL PROTECTIVE EQUIPMENT:
GLOVES: Dust impervious gloves during manual handling of product.
EYES: Safety glasses with side -shields or tight fitting goggles.
FOOTWEAR: Steel reinforced shoes when handling pallets of product.
CLOTHING: Long sleeves, buttoned collar, long pants extended over shoes or
coveralls.
RESPIRATORY - UP TO 100 MG/M3: Any dust, mist or fume respirator; any air supplied
respirator; or, self-contained breathing apparatus.
UP TO 250 MG/M3: Any supplied air respirator operated in a continuous flow mode or
any powered air purifying respirator with a dust/mist/fume filter.
UP TO 500 MG/M3: High efficiency particulate filter with full face piece; any
powered air supplied respirator with a tight fitting face piece and a high
efficiency particulate filter; any self contained breathing apparatus with a full
face piece; any supplied air respirator with a full face piece.
UP TO 7500 MG/M3: Any air supplied respirator with full face piece and operated in
a pressure demand or other positive pressure mode.
EMERGENCY or ENTRY INTO UNKNOWN CONCENTRATIONS: Self contained breathing apparatus
with full face piece and operated in pressure demand mode or air supplied
respirator with full face piece operated in a pressure demand or other positive
pressure mode in combination with auxiliary self contained breathing apparatus
operated in pressure demand or positive pressure mode.
ESCAPE: Any air purifying full face piece respirator with high efficiency
particulate filter or any appropriate escape type self contained apparatus.
EXPOSURE LIMITS
Magnesium hydroxide: No exposure limits established by OSHA, ACGIH or NIOSH.
if magnesium hydroxide is heated over 1700°C (in a reducing environment), magnesium
oxide fume may be generated. Exposure limits for magnesium oxide fume include:
ACGIH - Time Weighted Averages Magnesium oxide fume 10 mg/m3 TWA
ACGIH - TLV Basis: Critical Effects Magnesium oxide fume irritation; metal fume
fever
Australian Exposure Standards Magnesium oxide fume 10 mg/m3 TWA
California - Exposure Limits: PELs Magnesium oxide fume as Mg: 10 mg/m3
Canada - Alberta -
15 Minute Occupational Exposure Limit Magnesium oxide fume 20 mg/m3 STEL
http://www.magspecialties.com/MSDS/mgob-slurry-msds.asp?MsdsNo=29 1/13/2005
IMPORFANP. While Brermtagbelievesthe information containe d herein to be a ceurate,Brenntag makesno representation or warranty express
orimplied,regarding, and assumesnoliabiityfor,the accuracy or completeness oftheinformation. The Buyer asunesaflresponsbility

FloMag H MSDS Page 2 of 8
environment without adequate personal protection, inhalation of magnesium oxide
dust or fume may aggravate any pre-existing respiratory disease; prolonged/frequent
skin contact may lead to dermatitis.
SECTION IV: FIRST AID MEASURES
INHALATION: Remove to fresh air immediately. no not permit exposed person to
remain in dusty environment without adequate respiratory protection. Treat metal
fume fever with bed rest and treat for fever and pain.
EYE CONTACT: Do not rub eyes. Wash eyes under slowly running water for at least
fifteen minutes, making sure eyes are held wide open and moved slowly in every
direction. Ensure no solid particles remain in creases of eyelids. If so, continue
to wash. If irritation persists, consult an ophthalmologist.
SKIN CONTACT: Remove from source of irritation. Remove contaminated clothing and
wash affected area thoroughly with a mild soap and water. Wash contaminated
clothing before reusing.
INGESTION: Treat symptomatically. If bowel obstruction occurs, immediately consult
a physician.
SECTION V: FIRE FIGHTING MEASURES
FLASH POINT (METHOD): Product is not flammable or combustible.
AUTO -IGNITION TEMP: Not applicable LEL: Not applicable UEL: Not applicable
SENSITIVE TO MECHANICAL IMPACT? No SENSITIVE TO STATIC DISCHARGE? No
FLAMMABILITY CLASSIFICATION: Not flammable CONDITIONS OF FLAMMABILITY: Not
flammable
EXTINGUISHING MEDIA: Use media appropriate to primary source of fire. Otherwise,
use dry chemical, carbon dioxide, water spray or foam.
SPECIAL FIREFIGHTING PROCEDURES: No special procedures; avoid breathing fumes or
dust; keep upwind.
UNUSUAL FIRE & EXPLOSION HAZARDS: None known.
HAZARDOUS COMBUSTION PRODUCTS: None known.
SECTION VI: ACCIDENTAL RELEASE MEASURES
Ventilate enclosed spaces and use appropriate respiratory protection. Sweep or
vacuum spilled material in a manner to avoid generation of dust. Reclaim product
for re -use, if possible, or collect in containers for disposal in an appropriate
manner.
SECTION VII: HANDLING & STORAGE
HANDLING PROCEDURES AND EQUIPMENT: Keep container closed when not in use. Avoid
contact with eyes. Avoid breathing dust or fume and only use in a well ventilated
area. Consumption of food and beverages should be avoided in work area where
product is being used. After handling product, always wash hands and face
thoroughly with soap and water before eating, drinking or smoking.
STORAGE REQUIREMENTS: Suitable for any general chemical storage area.
http://www.magspecialties.com/MSDS/mgoh-slurry-msds.asp?MsdsNo=29 1/13/2005
IMPORTANT. While Brenntagbehevesthe information coMainedherein to be accurate,Brenntagmakesnorepresentation or warranty express
crimpled,regarding, and assumesnoliabililyfor,the accuracy or completeness ofthe information. The Buyer assumes afire sponsbility

FloMag H MSDS
Page 1 of 8
SECTION I: CHEMICAL PRODUCT & COMPANY INFORMATION
MARTIN MARIETTA MAGNESIA SPECIALTIES LLC
195 Chesapeake Park Plaza, Suite 200
BALTIMORE, MARYLAND 21220-0470
[phone]
424-9300 CHEMTREC
PRODUCT NAME(S): FlOMag H
CHEMICAL DESCRIPTION: Magnesium Hydroxide Slurry, Aqueous
FORMULA: Mg(OH)2
MSDS #: 3710
DATE: January 13, 2005
Emergency Phone: (800)
Haab
Fire
1 Henllh
0 File
0 Reactivity
SECTION 11: COMPOSITION / INFORMATION ON INGREDIENTS
HAZARDOUS COMPONENT CAS No Approx Wt % LD50 or LC50 (species/rc
Magnesium Hydroxide 01309-42-8 60-100 No data available
Magnesium oxide *FUME* 01309-48-4 unknown. TCLo 400 mg/m3 (human/ir
Magnesium oxide *FUME* may be generated in a reducing environment when temperatures
SECTION III: HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW: Product contains mechanical irritants to skin, eyes and
respiratory tract and may present a nuisance dust hazard if allowed to dry out.
Avoid breathing dust. Avoid contact with skin. Wear protective clothing including
gloves, goggles or safety glasses with side shields and NIOSH approved dust mask.
Magnesium oxide FUME may be generated in a reducing environment when temperatures
exceed 1700°C (3092°F).
EFFECTS OF ACUTE EXPOSURE: Ingestion generally causes purging of the bowels,
however, swallowing large amounts may lead to bowel obstruction. If allowed to dry
out, dust may irritate eyes, skin, nasal passages and respiratory tract. If heated
over 1700`C (in a reducing environment), inhalation of freshly generated magnesium
oxide fume may result in metal fume fever.
EFFECTS OF CHRONIC EXPOSURE: No data available.
SIGNS & SYMPTOMS OF EXPOSURE:
INHALED DUST: sneezing, coughing, discolored sputum
INHALED FUME: metal fume fever has influenza -like symptoms including fever,
chills, perspiration, cough, nasal irritation, chest pain,
nausea, head aches, vomiting and muscular weakness. Symptoms
may be delayed 1-3 hours after exposure however no reports of
such exposures from industrial contact have been reported.
EYE CONTACT: redness, tearing, conjunctivitis.
SKIN CONTACT: drying, chapping, dermatitis.
MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE: As with exposure to any
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IMPORCANT. While Brenntagbelieve stheinformationcontainedhereintobe accurate,Brenntagmakesnorepresentation orwarranty e?press
orimplied,regarding, and assumesnoliab>lityfor,the accuracy orcompleteness oftheinformation. The Buyer asqrmesallresponsbiity

Revisions to UIC Notification Form
Umicore USA, Inc.
Maxton, North Carolina
July 8, 2014
Page 2 of 2
4. Monitoring Plan
Duncklee & Dunham conducted a pre -injection groundwater monitoring event on 6/3 and 6/4/2014.
We will conduct post -injection monitoring events on 9/9/2014, 9/25/2014, 10/7/2014, 10/23/2014 and
12/9/2014.
If you have any questions about these revisions, please call or email us at [phone] or via e-mail at
[e-mail].
Sincerely,
Duncklee & Dunham, P.C.
William M. Flinchum
Project Geologist I
Senior Peer Review:
Bryson D. Trexler, Jr., Ph.D., P.G., R.S.M.
Senior Hydrogeologist
Attachment: Magnesium Hydroxide MSDS
ec: Theron Grim, Umicore USA, Inc.
David L. Duncklee, P.G., R.S.M.
Senior Hydrogeologist
\\boss\files\Projects\Umicore\Maxton - 200917\10.0 RAP\On-site\10.3 Permits (k}\UIC Form Revision Letr-14177.doc
17)
DUNCKLEE & Dt 'NFIAM. P.C.

111 DUNCKLEE
& DUNHAM
July 8, 2014
ENVIRONMENTAL GEOLOGISTS & ENGINEERS
511 KEISLER DRIVE - SUITE 102
CARY, NORTH CAROLINA 27518
OFFICE: [phone]
WWW.DUNCKLEEDUNHAM COM
Mr. Tom Slusser
North Carolina Department of Environment and Natural Resources
Division of Water Resources — UIC Program
1636 Mail Service Center
Raleigh, NC 27699-1636
Reference: Revisions to UIC Notification Form
Umicore USA, Inc.
Maxton, North Carolina
Dear Mr. Slusser:
l iate:r - '[
As you requested, Duncklee & Dunham, P.C. (Duncklee & Dunham) has prepared this letter to
summarize revisions to the UIC Notification Form that was submitted to North Carolina Department of
Environment and Natural Resource (NCDENR) dated March 13, 2014. On behalf of Umicore USA, Inc.,
we submit the following revisions:
1. Description of Proposed Injection Activities
Duncklee & Dunham plans to inject the mixture of Ferrous Sulfate, Sodium Hydroxide and water in
up to 14 injection points within the source area.
2. Injectants
Magnesium hydroxide is being added the injectant list as a possible product to be used to buffer
groundwater pH. If used, 202 gallons of 61 percent slurry magnesium hydroxide will be mixed in
49,840 gallons of water for each 40-foot injection zone per injection point. The concentration at the
point of injection will be approximately five percent magnesium hydroxide with 150 gallons of
mixture being injected per vertical foot. No other injectants will be added to this mixture. A copy of
the material safety data sheet (MSDS) for magnesium hydroxide is attached.
3. Schedules
We will conduct the injection of reagents for the pilot study between 8/18/2014 and 8/29/2014.
MAII.ING ADDRESS - PUS'I' OFFICE Box 639 - CARY. NORT FI CAROLINA 27512
NORTH CAROLINA BOARD OF FXAMINERS FOR L\(IIV.I:RS AND SURVEYORS 1..1( ENSF C-3559
NORTH CAROLINA BOARD FOR L ICENSI'- , )I (iEOLOGISTS LICFNSF. C-261
NC DEN: RI(ISTF.RFD ENVIRU\UI \ L \I CI I\Sl LTANT NI-\• FI{ 01)961