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The calculators provided on this page help you identify problems and solutions, and as a result your organization’s ability to compete.

  • This worksheet will calculate the amount of money you spend on fuel for your commute, how much each passenger should contribute to the fuel cost, and how much money you save by ridesharing.
  • This downloadable calculator estimates the environmental benefits of improving the purchasing, use and disposal of computer products; specifically computer desktops, liquid crystal display (LCD) and cathode ray tube (CRT) monitors and computer notebooks/laptops. The calculator also calculates the benefits of mobile phone reuse and recycling, and of recycling mixed loads of electronic equipment.
  • The energy and cost calculators allow companies to enter their own input values (e.g., utility rates, hours of use, etc.) to estimate energy and cost savings for energy-efficient products for lighting, commercial and industrial equipment, equipment for food service, and office equipment.
  • This worksheet will convert the entered quantity from the chosen units into carbon dioxide equivalent (CO2e) emissions.
  • EPA's National Stormwater Calculator (SWC) is a desktop application that estimates the annual amount of rainwater and frequency of runoff from a specific site anywhere in the United States. It is designed to be used by anyone interested in reducing runoff from a property.
  • EPA’s stormwater regulations allow NPDES permitting authorities to waive NPDES permitting requirements for stormwater discharges from small construction sites (disturbing less than 5 acres) if the value of the rainfall erosivity factor (“R” in the Revised Universal Soil Loss Equation or RUSLE) is less than 5 during the period of construction activity.
  • SPCC Plan New Construction Worksheet to Determine Dike or Berm Dimensions for Secondary Containment: This worksheet can be used to determine the possible dimensions for a rectangular or square dike or berm to meet the secondary containment requirement for aboveground bulk storage containers.
  • Secondary Containment Calculation Worksheet: Multiple Horizontal Cylindrical Tanks Inside a Rectangular or Square Dike or Berm: This worksheet can be used to calculate the containment volume of a rectangular or square dike or berm for multiple horizontal cylindrical tanks. When there are other objects or structures such as tanks along with the largest tank within the dike or berm, their respective displacement volumes must be accounted for when determining secondary containment.
  • Secondary Containment Calculation Worksheet: Rectangular or Square Remote Impoundment Structure: This worksheet can be used to calculate the containment volume of a rectangular or square remote impoundment1 structure providing secondary containment for an aboveground tank storage facility.
  • Secondary Containment Calculation Worksheet: Single Vertical Cylindrical Tank Inside a Rectangular or Square Dike or Berm: This worksheet can be used to calculate the secondary containment volume of a rectangular or square dike or berm for a single vertical cylindrical tank. This worksheet assumes that there are no other objects or structures within the dike or berm that will displace the volume of the secondary containment.
  • This series of worksheets will convert the entered quantity from the chosen units to other common units of mass, length, area, volume, pressure, and temperature.
  • WARM can help solid waste planners and organizations track and voluntarily report greenhouse gas (GHG) emissions reductions and energy savings from several different waste management practices. Use this worksheet to describe the baseline and alternative municipal solid waste (MSW) management scenarios that you want to compare.
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