- (a) Unless the department approves alternative methods pursuant to Env-Wq 811 that are equivalent to (1) and (2), below, monitoring wells shall be designed, installed, and decommissioned in accordance with the practices described in Env-Wq 402.22.
(b) Monitoring wells shall be:
- (1) Purged prior to sampling; and
- (2) Allowed to equilibrate a minimum of 2 weeks prior to sampling for compliance purposes.
Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Wq 800) #10998, eff 1-1-16