Material Safety Data Sheet Page 1 of X s1

GAF MATERIALS CORPORATION MSDS # : 2076 MATERIAL SAFETY DATA SHEET MSDS DATE: 7/21/05 Revision: 1 TM PRODUCT NAME: CanyonRock

SECTION 1: PRODUCT AND COMPANY IDENTIFICATION

TRADE NAME: CanyonRockTM CHEMICAL NAME: N/A CHEMICAL FAMILY: N/A MANUFACTURER: GAF Materials Corporation (GAFMC) ADDRESS: 1361 Alps Road, Wayne, NJ 07470

24 HOUR EMERGENCY 800-424-9300 PHONE (CHEMTREC):

INFORMATION ONLY: 800-766-3411 PREPARED BY: L. Baeder APPROVED BY: P. Curry DATE: 7/21/05

SECTION 2: COMPOSITION / INFORMATION ON INGREDIENTS

OCCUPATIONAL EXPOSURE LIMITS CHEMICAL NAME CAS # Approximate % OSHA (PEL) ACGIH (TLV) (BY WT) Pumice 1332-09-8 40-50 30mg/m3 0.05 mg/m3 Silica, Crystalline Quartz 14808-60-7 10-15 30mg/m3 0.05 mg/m3 Iron Oxide 1309-37-1 1-3 10mg/m3 5mg/m3 Portland Cement 65997-15-1 35-45 15 mg/m3 10mg/m3

SECTION 3: HAZARDS IDENTIFICATION

HEALTH EFFECTS PRIMARY ROUTE OF EXPOSURE: Skin, Inhalation SIGNS & SYMPTONS OF EXPOSURE: Eyes: Irritation, itching Skin: Irritation, itching Ingestion: Unlikely. Observe to ensure intestinal obstruction does not occur Inhalation: Dust. Irritation. ACUTE EFFECTS: Irritation CHRONIC EFFECTS: Inhalation of high levels of dust over long periods of time may cause lungs to be more vulnerable to pneumoconiosis. IARC MONOGRAPHS: Silica, Crystalline Quartz as dust is considered a Group 1 carcinogen.

SECTION 4: FIRST AID MEASURES

FIRST AID PROCEDURES: Eyes: Immediately flush eyes with water. If irritation persists, seek medical attention. Skin: Flush with large amounts of water. If irritation persists, seek medical attention. Ingestion: Unlikely, but if it does occur, watch the person to make sure intestinal obstruction does not occur. Do not induce vomiting. Seek medical attention. Inhalation: Remove person to fresh air. If irritation persists, seek medical attention.

SECTION 5: FIRE-FIGHTING PROCEDURES

OF 3 GAF MATERIALS CORPORATION MSDS # : 2076 MATERIAL SAFETY DATA SHEET MSDS DATE: 7/21/05 Revision: 1

FLASH POINT: None METHOD USED: N/A AUTO-IGNITION TEMPERATURE: N/A SUITABLE EXTINGUISHING MEDIA: Product is non-combustible HAZARDOUS COMBUSTION PRODUCTS: None RECOMMENDED FIRE FIGHTING Use any extinguishing media appropriate for the surrounding fires. PROCEDURES: UNUSUAL FIRE & EXPLOSION HAZARDS: None

NFPA HAZARD RATING: HMIS HAZARD RATING: 1 Health 1 0 Flammable 0 0 Reactive 0 None Special Hazards None OSHA HAZARDOUS: Yes: No: X

SECTION 6: ACCIDENTAL RELEASE MEASURES

ACCIDENTAL RELEASE MEASURES: Scoop, sweep, or vacuum up materials for disposal in an appropriate container. Avoid dispersion of dust.

SECTION 7: HANDLING AND STORAGE

HANDLING AND STORAGE Avoid dispersion of dust in the air. Sweep up material and place in an appropriate STEPS TO BE TAKEN IN CASE MATERIAL IS container for disposal. Wash spill area but do not wash into storm drains or waterway. RELEASED OR SPILLED: Wear appropriate protective equipment. If dust is generated, avoid inhailing dust. Wear appropriate work gloves and PRECAUTIONS TO BE TAKEN IN HANDLING protective equipment that complies with ANSI Z87.1. Avoid dust contact with eyes AND STORAGE: and skin.

SECTION 8: EXPOSURE CONTROLS / PERSONAL PROTECTION

ENGINEERING CONTROLS VENTILATION: Provide ventilation as necessary to maintain exposures below occupational exposure limits. RESPIRATORY PROTECTION: If dust is generated, use an appropriate filter respirator. EYE PROTECTION: Safety glasses with side shields. SKIN PROTECTION: Wear appropriate work gloves. OTHER PROTECTIVE EQUIPMENT: N/A WORK HYGIENIC PRACTICES: Wash thoroughly and launder clothing after use. ADDITIONAL EXPOSURE GUIDELINES: Do not inhale dust. Wash affected areas with soap and water.

SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES

APPEARANCE AND ODOR: Cured concrete product of BOILING POINT: N/A varying shapes, sizes and colors EVAPORATION RATE: N/A MELTING POINT: N/A pH (undiluted product): N/A SPECIFIC GRAVITY: N/A SOLUBILITY IN WATER: Insoluble VAPOR PRESSURE: N/A

SECTION 10: STABILITY AND REACTIVITY

THERMAL STABILITY: STABLE X UNSTABLE

OF 3 GAF MATERIALS CORPORATION MSDS # : 2076 MATERIAL SAFETY DATA SHEET MSDS DATE: 7/21/05 Revision: 1 CONDITIONS TO AVOID (STABILITY): None identified. INCOMPATIBILITY (MATERIAL TO AVOID): None identified. HAZARDOUS DECOMPOSITION OR BY-PRODUCTS: None identified HAZARDOUS POLYMERIZATION: None

SECTION 11: TOXICOLOGICAL INFORMATION

TOXICOLOGICAL INFORMATION: No data available

SECTION 12: ECOLOGICAL INFORMATION

ECOLOGICAL INFORMATION: Keep out of sewers and waterways. Dispose in approved landfill in accordance with Federal, State and Local regulations.

SECTION 13: DISPOSAL CONSIDERATIONS

WASTE DISPOSAL METHOD: Sweep or vacuum all spills. Dispose of in accordance with Federal, State and Local regulations.

SECTION 14: TRANSPORT INFORMATION

U.S. DOT Transportation PROPER SHIPPING NAME: CAST STONE, NOI CLASSIFICATION NMFC 90500 CLASS 50 PACKAGING REQUIREMENTS: QUANTITY LIMITATIONS: NA

SECTION 15: REGULATORY INFORMATION

REFERENCES (USED TO New product. CONSTRUCT DOCUMENT): California Prop. 65: This product contains chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. Other Regulations: Canadian Hazardous Products Act: This product contains iron oxides.

SECTION 16: OTHER INFORMATION

ADDITIONAL COMMENTS: None DATE OF PREVIOUS MSDS: New MSDS CHANGES SINCE PREVIOUS MSDS: New product, new MSDS.

This information relates to the specific material designated and may not be valid for such material used on combination with any other materials or in any process. Such information is to the best of our knowledge and belief accurate and reliable as of the date compiled. However, no representation, warranty or guarantee, expressed or implied, is made as to its accuracy, reliability, or completeness. It is the user’s responsibility to satisfy himself as to the suitability and completeness of such information for his particular use. We do not accept liability for any loss or damage that may occur from the use of this information. Nothing herein shall be construed as a recommendation for uses which infringe valid patents or as extending a license of valid patents.