Source Ranking Database
What Does SRD Do?
Performs a systematic screening-level review of over 12,000 potential indoor pollution sources to identify high-priority product and material categories for further evaluation.
Can also identify the products that have contained a specific chemical.
How Does SRD Work?
Produces risk-based rankings by multiplying an estimated indoor-air concentration by a hazard score for each chemical in a given product or material and for each environment in which the product/material is used.
Allows users to display the scores for constituent chemicals, as well as the overall product scores and rankings.
Instructions to install and run the model are not presented here.
What Do I Need to Use SRD?
SRD contains all of the information needed to create product rankings. No specific user inputs are required.
Users can create their own product groupings in addition to the default groupings provided by the program (these are based on Standard Industrial Classification codes).
Users select the indoor environments (e.g., office building, residence, hospital, shopping mall) to be evaluated by the ranking algorithm.
Users also choose between 'high' and 'average' values for key exposure parameters (e.g., product usage rates) evaluated by the ranking algorithm.
How Are SRD Data Used?
To produce ranked lists of products or product categories that contribute to indoor air pollution.
To identify the relative contribution of each constituent chemical to a consumer product's risk score.
To identify what products a specific chemical has been used in.
What Type of Computer System Do I Need?
Hardware: IBM-compatible computer with a 486 or Pentium microprocessor (minimum speed: 33 MHZ) and 640K memory
What Is SRD's Status and Availability
A final version of this program is currently available in a Windows-based format. SRD has been peer reviewed by the Science Advisory Board and the comments from that review have been incorporated into the model. This model was developed under contract by Versar Inc. for the EPA Office of Pollution Prevention and Toxics, Economics, Exposure, and Technology Division, Exposure Assessment Branch (EAB).
SRD can be downloaded and installed using Download SRD.
The user's guide and background document is available below as a pdf file.
Source Ranking Database (SRD) User's Guide and Documentation, Vol. 1 (PDF)(1.9MB, 108pp)
The appendices are available below as a pdf file.
Source Ranking Database (SRD) Documentation, Vol 2, Appendices (PDF) (7.1MB, 367pp)
PLEASE NOTE: the items mentioned at this page are in Adobe's Portable Document Format (PDF). To view or print them you will need to have the Adobe Acrobat Reader program installed on your computer. The Reader can be downloaded and used with no charge; for more information at EPA about PDF files.
For more information about the model, contact:
U.S. Environmental Protection Agency
Office of Pollution Prevention and Toxics
1200 Pennsylvania Avenue N.W. (Mail Code 7406M)
Washington, DC 20460
E-mail: Christina Cinali