D.C. Mun. Regs. tit. 21, r. 21-1822
Current through Register Vol. 71, No. 49, December 6, 2024
The construction of a monitoring well, observation well, or piezometer shall be conducted by a method that allows for the determination of characteristics of the geologic materials under the site, unless otherwise approved by the Department in the well construction work plan.
A monitoring well, observation well, or piezometer's uncompleted borehole shall not penetrate to a depth greater than the depth to be monitored, and any portion of the borehole that extends to a depth greater than the depth to be monitored shall be grouted completely to prevent vertical migration of contaminants.
D.C. Mun. Regs. tit. 21, r. 21-1822