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09094800
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20251121
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20251121
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drastic
2025-11-17T00:00:00
0
Pennsylvania
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The most commonly-used method for regional assessment of ground-water vulnerability is called "DRASTIC," an acronym for the seven factors that comprise the model. The U.S. Environmental Protection Agency (EPA) funded the development of the DRASTIC model, and used it as an assessment tool in their National Pesticide Survey (USEPA, 1992). In that Survey and in other assessments of contamination potential from application of agricultural chemicals, the pesticide version of DRASTIC is used; it differs from the standard DRASTIC model only in the degree of weighting applied to the seven factors. The DRASTIC model was developed by a committee of technical advisors who used the consensus approach to specify the relative significance of each factor. DRASTIC was designed primarily as a regional tool for prioritization, or screening, to indicate those areas (of at least 100 acres in size) which are generally more sensitive to contamination and, therefore, in need of more detailed mapping and evaluation or monitoring. The committee also intended DRASTIC to support decisions on allocation of scarce monitoring or remediation resources, and to serve as an educational tool.</SPAN></P></DIV></DIV></DIV>
https://www.usgs.gov/publications/applying-drastic-model-a-review-county-scale-maps
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20251121
Adrian Bouknight
EP Bur Sf Drnkng Wtr Prmt Div
Lcnsd Prfsnl Geolgst
F3BA88AE-B630-4D9B-B03C-1F9044DBB4C1
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Use Limitation / Disclaimer Language: "Not for commercial use or resale. The User shall save the Commonwealth harmless from any suits, claims or actions arising out of the use of the data files or accompanying documentation, or arising out of any defect in the data files or accompanying documentation. The Commonwealth excludes any and all implied warranties and makes no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability, or fitness for a particular purpose. These data files and documentation are provided AS IS and the User assumes the entire risk as to their quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation."</SPAN></P></DIV></DIV>