Kevin Ryan GWRMP Coordinator USEPA Region 9 (415) 972‐3806 ryan.kevin@epa.gov
UCMR3 Groundwater Representative Monitoring Plans
UCMR3 Groundwater Representative Monitoring Plans
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Section 8? – EPA’s Review (3) (i)<br />
Core Elements<br />
Section 141.35 (3) (i)<br />
PWSs may sample at<br />
Representative EPTDS if<br />
• They use ground water as a source<br />
• All of their well sources have either the same treatment or no<br />
treatment; and<br />
• They have multiple EPTDSs from the same source, such as an<br />
aquifer<br />
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