The following are some of Aspen’s employees’ favorite hotlinks. Please email us if you have any links you have found useful.

Regulations
Exposure Limits
Material Safety Data Sheets
Other Sources of Chemical Information
Health and Safety Related Government Agencies and Organization

Merriam-Webster On-Line Dictionary
http://www.m-w.com/

FEDERAL AGENCIES

Department of Interior (indefinitely suspended)
http://www.doi.gov/

U.S. EPA
http://www.epa.gov/

National Park Service
http://www.nps.gov/

National Department of Transportation
http://www.dot.gov/

U.S. Army Corps of Engineers, Los Angeles District
http://www.spl.usace.army.mil/

U.S. Army Corps Environmental Residue Effects Databas
http://www.wes.army.mil/el/ered/

U.S. Dept of Interior: Bureau of Land Management
http://www.blm.gov/nhp/index.htm

U.S. Dept of Interior: Bureau of Water Reclamation
http://www.usbr.gov/main/index.html

U.S. Forest Service
http://www.fs.fed.us/

U.S. Fish & Wildlife Service
http://www.fws.gov/

CALIFORNIA STATE

California EPA
http://www.calepa.ca.gov/

California Government Homepage
http://www.ca.gov/state/portal/myca_homepage.jsp
http://www.ca.gov

California Energy Commission Homepage
http://www.energy.ca.gov

CERES CEQA page
http://ceres.ca.gov/ceqa/

CEQA –California Resources Agency CEQA Page
http://www.ceres.ca.gov/planning/ceqa_index.html

CEQAnet Database:
http://www.ceqanet.ca.gov/

CA Dept of Fish and Game
http://www.dfg.ca.gov

Dept of Fish and Game Wildlife and Habitat Analysis links
http://www.dfg.ca.gov/whdab/html/animals.html

CA Air Resource Board
http://www.arb.ca.gov

ARIZONA STATE

Arizona Department of Environmental Quality
http://www.adeq.state.az.us/

Arizona State Game and Fish
http://www.gf.state.az.us/

Maricopa County
http://www.maricopa.gov/

Pima County
http://www.pima.gov/

State of Arizona
http://www.governor.state.az.us/

EPA INFORMATION SITES

EPA AP-42 Emission Factor by Chapter
http://www.epa.gov/ttn/chief/index.html

EPA Chemical Emergency Preparedness and Prevention Office (RMP Info)
http://www.epa.gov/swercepp/

EPA Ecotox Database
http://www.epa.gov/ecotox/

EPA Reach It Remediation and Characterization Innovative Technologies
http://www.epareachit.org/index.html

EPA Superfund Sites:
http://www.epa.gov/superfund/index.htm

EPA Technology Transfer Network
http://www.epa.gov/ttn/direct.html

Toxic Release Inventory
http://www.epa.gov/tri/

ENVIRONMENT, GENERAL

Environmental Yellow Pages
http://www.enviroyellowpages.com

PLANNING

Planitezin
http://www.planetizen.com

Cyburbia
http://www.cyburbia.org

American Planning Association
http://www.planning.org/

WATER

American Water Resources Association
http://www.awra.org/index.html

Water Environment Federation
http://www.wef.org/

CA State Water Resources Control Board
http://www.swrcb.ca.gov/

HABITAT

Audubon Birds
http://www.audubon.org/bird/

AZ State Game and Fish
http://www.gf.state.az.us/

CA Native Plant Society:
http://www.cnps.org/

Dept of Fish and Game Wildlife and Habitat Analysis links
http://www.dfg.ca.gov/whdab/html/animals.html

National Marine Fisheries Services
http://www.nmfs.noaa.gov/

US Fish & Wildlife Services
http://www.fws.gov/

ENERGY AND INFRASTRUCTURE

Electric Power Research Institute (EPRI)
http://www.epri.com/

Electric Power Supply Association (EPSA)
http://www.epsa.org/

Energy Central
http://www.energycentral.com/

Gas Technology Institute
http://www.gastechnology.org/

Oil and Gas Journal
http://www.ogj.com/

GEOLOGY AND CLIMATE

EROS USGS Geographic Data Download
http://edc.usgs.gov/doc/edchome/ndcdb/ndcdb.html

National Weather Service
http://www.nws.noaa.gov/

Western Regional Climate Center
http://www.wrcc.dri.edu

U.S. Geological Survey
http://www.usgs.gov/

AIR QUALITY/POLLUTION

Air quality data statistics:
http://www.arb.ca.gov/adam

California Air Resources Board (ARB Databases, Maps)
http://arb.ca.gov

California Air Resource Board BACT Clearinghouse
http://arbis.arb.ca.gov/bact/BACT.HTM

Monterey Bay Unified APCD
http://www.mbuapcd.org

NIOSH Manual of Analytical Methods On Line Version
http://www.cdc.gov/niosh/nmam/nmammenu.html

OSHA Air Sampling Methods
http://www.osha.gov/dts/osta/otm_ii_1.html

PE Photovac Technical Tips
http://instruments.perkinelmer.com/index.asp

SKC Guide to NIOSH/OSHA Air Sampling Methods – EPA, OSHA, NIOSHA Summaries
http://www.skcinc.com/OSHA-NIOSH/default.asp

Year 2000 traffic volumes on California State Highways:
http://www.dot.ca.gov/hq/traffops/saferesr/trafdata/index.htm

Air Quality Districts by location:

Amador County APCD
http://www.amadorapcd.org

Antelope Valley APCD
http://www.avaqmd.ca.gov/district.shtml

Bay Area AQMD
www.baaqmd.gov

Butte County AQMD
www.bcaqmd.org

Colusa County APCD
www.colusanet.com/apcd

El Dorado County APCD
www.co.el-dorado.ca.us/emd/apcd

Feather River AQMD
www.fraqmd.org

Kern County APCD
www.kernair.org

Mendocino County AQMD
www.co.mendocino.ca.us/aqmd

Mojave Desert AQMD
www.mdaqmd.ca.gov

Monterey Bay Unified APCD
www.mbuapcd.org

North Coast Unified AQMD
www.ncuaqmd.org/

Sacramento Metro AQMD
www.airquality.org

San Joaquin Valley Unified APCD
www.valleyair.org

San Luis Obispo APCD
http://www.slocleanair.org

Santa Barbara County APCD
http://www.sbcapcd.org/

Shasta County AQMD
http://www.co.shasta.ca.us/Departments/Resourcemgmt/drm/aqmain.htm#top

South Coast AQMD
www.aqmd.gov

Tehama County APCD
www.tehcoapcd.net

Ventura County APCD
www.vcapcd.org

Yolo-Solano AQMD
www.ysaqmd.org

CONTROL TECHNOLOGY CLEARINGHOUSE SITES

California Air Resource Board BACT Clearinghouse
http://arbis.arb.ca.gov/bact/BACT.HTM

DATA MANAGEMENT

EPA Basin GIS Data (Hydrography)
http://www.epa.gov/OST/BASINS/

ESRI
http://www.esri.com/

GIS Data Depot
http://www.gisdatadepot.com/

HEALTH AND SAFETY

Regulations

OSHA Regulations
http://www.osha.gov/.html

DOT Hazardous Materials (HAZMAT) Safety Regulations
http://www.myregs.com/dotrspa/

Exposure Limits

OSHA Permissible Exposure Limits (PELs) – Table Z1, Z2, Z3
http://www.osha.gov/sltc/pel/.html

NIOSH Immediately Dangerous to Life or Health (IDLH) Values
http://www.cdc.gov/niosh/idlh/intridl4.html

Material Safety Data Sheets (MSDSs)

MSDS Search.com
http://www.msdssearch.com/

Substance Material Safety Data Sheet (MSDS) Finder
http://siri.org/msds/

University of Kentucky MSDS Finder
http://www.ilpi.com/msds/index.html

VWR Scientific Chemical MSDS Catalog
http://www.vwrsp.com/safety/page.cgi?tmpl=mainlinks

Other Sources of Chemical Information

Agency for Toxic Substances and Disease Registry (ATSDR) ToxFAQs
http://www.atsdr.cdc.gov/toxfaq.html

DOT 1996 North American Emergency Response Guidebook
http://hazmat.dot.gov/pubs/erg/gydebook.htm

NIOSH Pocket Guide to Chemical Hazards
http://www.cdc.gov/niosh/npg/pgdstart.html

NIOSH Occupational Safety and Health Guidelines for Chemical Hazards
http://www.cdc.gov/niosh/docs/95-121/

NIOSH Criteria Documents
http://www.cdc.gov/niosh/critdoc2.html

NJ Right to Know Hazardous Materials Fact Sheets
http://www.state.nj.us/health/eoh/rtkweb/rtkhsfs.htm

Health and Safety Related Government Agencies and Organizations

American Conference of Governmental Industrial Hygienist (ACGIH)
http://www.acgih.org/

American Industrial Hygiene Association (AIHA)
http://www.aiha.org/

California OSHA
http://www.dir.ca.gov/occupational_safety.html

Department of Transportation
http://www.dot.gov/

Home Page DOT’s Office of Hazardous Material Safety
http://hazmat.dot.gov/

National Fire Protection Association (NFPA)
http://www.nfpa.org/

National Institute for Occupational Safety and Health (NIOSHA)
http://www.cdc.gov/niosh/homepage.html

National Safety Council (NSC)
http://www.nsc.org/

Occupational Safety and Health Administration (OSHA) Home Page
http://www.osha.gov/

ENVIRONMENTAL MANAGEMENT/SYSTEMS

Board of Environmental Auditors Certification
http://www.beac.org/certification.html

Coalition for Environmentally Responsible Economies
http://www.ceres.org/

Environmental Safety and Health Auditing Roundtable
http://www.auditear.org/

Environmental Council of the States
http://www.sso.org/ecos/

Global Environmental Management Initiative
http://www.gemi.org/

ISO 14000 Information
http://www.iso14000.net/

Sustainable Business
http://www.sustainablebusiness.com/

MISCELLANEOUS TECHNICAL LINKS

Air Force Center for Environmental Excellence
http://www.afcee.brooks.af.mil/

American Petroleum Institute – environment, health, safety
http://api.org/ehs/

Chemfinder
http://chemfinder.camsoft.com/

Dirtpile.com
http://www.dirtpile.com/

Expansion Tank Calculator
http://www.b2epc.com/software/tank.shtml

Pump World
http://www.pumpworld.com/

Sciences of the Soils
http://www.hintze-online.com/sos/

Thermal Expansion of Pipe Calculator
http://www.coupling.com/catalog/OF/pg05.htm

US Army Corps of Engineers
http://www.usace.army.mil/inet/usace-docs/

RISK ASSESSMENT

Integrated Risk Information Systems (IRIS)
http://www.epa.gov/iris/

Risk Assessment Guidance for Superfund (RAGS), Part D USGS
http://www.epa.gov/superfund/programs/risk/ragsd/index.htm

PROFESSIONAL ORGANIZATIONS & ASSOCIATIONS

Air & Waste Management Association (A&WMA)
http://www.awma.org/

American Chemistry Council
http://www.americanchemistry.com/

American Institute of Chemical Engineers
http://www.aiche.org/

American Petroleum Institute (API)
http://www.api.org/

American Planning Association
http://www.planning.org/

American Society for Civil Engineers
http://www.asce.org/

Association of Engineering Geologists
http://www.aegweb.org/

Association of State Dam Safety Officials
http://www.damsafety.org/

Health Effects Institute (EPA Partnership)
http://www.healtheffects.org/

National Association for Environmental Professionals
http://www.naep.org

National Petrochemical and Refineries Association
http://www.npradc.org/

NOAA Damage Assessment and Restoration Program (DARP)
http://www.darp.noaa.gov/

Society of Environmental Toxicology and Chemistry
http://www.setac.org/

Synthetic Organic Chemical Manufacturers Association (SOCMA)
http://www.socma.com/

Technical Association of the Pulp and Paper Industry (TAPPI)
http://www.tappi.org/