IDENTITY (As Used on Label and List) Freshly Mixed Unhardened Concrete

Note: Blank spaces are not permitted. If any item is not applicable, or no information is available, the space must be marked to indicate that.

Section I

Manufacturer's Name McTech Group Inc.	Emergency Telephone Number 770-913-8363
Address (Number, Street, City, State, and ZIP Code) 120 Camp St. Suite B	Telephone Number for Information 770-913-8363
Loganville, GA 30052	Date Prepared
	Signature of Preparer (optional)

Section II - Hazard Ingredients/Identity Information

Hazardous Components (Specific Chemical Identity; Common Name(s))

OSHA PEL

ACGIH TLV

Other Limits Recommended

%(optional)

Formula - Mixtures of Portland or blended cements, concrete aggregates and chemical admixtures.
Portland and blended cements:
Tricalcium Silicate (3CaO-SiO2)	(CAS # 12168-85-3)
Dicalcium Silicate (2CaO-SiO2)	(CAS # 10034-77-2)
Tricalcium Aluminate (3CaO-Al2O3)	(CAS # 23042-78-3)
Tetracalcium Aluminoferrite (4CaO-Al2O3-Fe2O3)	(CAS # 12068-35-8)
Calcium Sulfate Dihydrate (CaSO4-2H2O) (Gypsum)	(CAS # 7778-18-9) PEL-TWA  15 Mg/M3 Total Dust
Plus traces of Calcium Oxide (CaO), Magnesium Oxide (MgO), Potassium Sulfate (K2SO4), and Sodium Sulfate (Na2SO4)
Other Ingredients:
Concrete Aggregates, Inert gravel, sand and rocks
Admixtures may include fly ash, granulated slag and very small amounts of organic and inorganic materials which have no effect on the hazards associated with the use of the product.

Section III - Physical/Chemical Characteristics

Boiling Point	N/A	Specific Gravity (H2O = 1)	2.28 - 2.42
Vapor Pressure (mm Hg.)	N/A	Melting Point	N/A
Vapor Density (AIR = 1)	N/A	Evaporation Rate (Butyl Acetate = 1)	N/A
Solubility in Water	Slight (0.01 to 1%)	PH for Plastic Concrete	12.5
Appearance and Odor	Gray, plastic, flowable, granular composite - Faint odor

Section IV - Fire and Explosion Hazard Data

Flash Point (Method Used)         N/A	Flammable Limits        N/A	LEL        N/A	UEL        N/A
Extinguishing Media                                                 N/A
Special Fire Fighting Procedures                                                 N/A
Unusual Fire and Explosion Hazards                                                 N/A

(Reproduced in June 1999 By Ohio Ready Mixed Concrete Association)

Based on OSHA 174, Sept. 1985

Section V - Reactivity Data

Stability	Unstable		Conditions to Avoid
	Stable	X	However the product stiffens and hardens in 2 to 8 hours and is no longer hazardous
Incompatibility (Materials to Avoid)  None
Hazardous Decomposition or Byproducts   Product hardens in a few hours and then does not decompose
Hazardous Polymerization	May Occur		Conditions to Avoid    None
	Will Not Occur	X

Section VI - Health Hazard Data

Route(s) of Entry:	Inhalation?                     No	Skin?                     Yes	Ingestion?                     No
Health Hazards (Acute and Chronic) Acute - Wet plastic, unhardened concrete can dry the skin and cause alkali burns
Chronic - Hypersinsitive individuals may develop an allergic dermatitis - Portland cement may contain trace amounts of chromium
Carcinogenicity:	NTP?                     No	IARC Monographs?                     No	OSHA Regulated?                     No
Carcinogenic Potential: Concrete frequently contains crystalline silica in concentrations greater than 0.1% principally contributed by the aggregates. Respirable crystalline silica is classified by IARC (International Agency for Research on Cancer) as a known human carcinogen and by NTP (National Toxicology Program) as "reasonably anticipated to be a carcinogen." Crystalline silica in wet concrete is not respirable and does not pose a hazard when the concrete is in its plastic or unhardened state. Once concrete has hardened, long term exposure to airborne dust generated by grinding, sawing, drilling or breaking of hardened concrete, could potentially lead to hazardous exposures to workers and subsequent health related problems. Appropriate respiratory protection should be worn during these operations.
Signs and Symptoms of Exposure Irritation of skin and burning sensation particularly when exposure is in an area of skin previously subjected to abrasion or irritation
Medical Conditions Generally Aggravated by Exposure Open wounds or sores
Emergency and First Aid Procedures Irrigate eyes with water. Wash expossed areas of the body with soap and water - change clothing if contaminated with wet concrete

Section VII - Precautions for Safe Handling and Use

Steps to Be Taken in Case Material is Released or Spilled Spill does not increase hazard

Waste Disposal Method Material can be retained until it hardens when it can be disposed of as a common waste

Precautions to Be taken in Handling and Storing Use barrier creams, gloves, boots and clothing to protect the skin from prolonged contact with plastic concrete. Particularly avoid abrasion of the skin in contact with unhardened plastic concrete.

Other Precautions Precautions must be observed because cement burns occur with little warning - little heat is sensed. Eye protection is not generally required, except when placing methods cause splash, then tight fitting goggles should be used.

Section VIII - Control Measures

Respiratory Proctection (Specify Type)   Not required
Ventilation  N/A	Local Exhaust   None	Special   None
	Mechanical (General)    None	Other     N/A

Protective Gloves     Yes - waterproof	Eye Protection   Yes - tight fitting goggles
Other Protective Clothing or Equipment   Waterproof boots, long-sleeved shirt and full length trousers should be worn
Work/Hygienic Practices   Avoid contact between skin/eyes and wet/moist concrete

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* U.S.G.P.O.: 1986 - 491 - 529/45775