Ala. Admin. Code r. 335-13-4-.14 - Groundwater Resources

(1) Groundwater. Groundwater resources in the vicinity of the landfill unit shall be determined as a basis for facility design, groundwater protection, and groundwater monitoring required under 335-13-4-.27.

(a) The depth to the groundwater and the direction of flow shall be established during the hydrogeological evaluation.

(b) The groundwater in the first saturated zone below the landfill unit shall be evaluated as follows:

1. A minimum of one hydraulically upgradient monitoring well for background data and two hydraulically downgradient monitoring wells shall be required.

2. The location and design of the monitoring wells shall be approved by the Department prior to installation and the upgradient well shall be located so as not to be affected by the landfill unit.

3. The monitoring wells shall be installed well in advance of projected facility opening so as to provide an undisputed background water quality sample from each well. Background water quality shall be established using the sampling and analysis procedures described in 335-13-4-.27.

4. Additional monitoring wells above the minimum may be required by the Department based on site hydrology, geology, topographical features and waste characteristics.

5. Groundwater monitoring wells shall be designed and constructed as described in 335-13-4-.27.

(c) The groundwater sampling and analysis plan shall be prepared in accordance with 335-13-4-.27.

(2) Soil Permeability. The permeability of on-site soils, specifically those underlying the disposal site, shall be determined by laboratory testing at a qualified soils laboratory and followed up by pump testing or slug testing of monitoring wells.

Author: Russell A. Kelly

Notes

Ala. Admin. Code r. 335-13-4-.14

November 18, 1981; Amended: July 21, 1988. Amended: Filed September 28, 1993; effective November 2, 1993. Amended: Filed June 21, 1996; effective July 26, 1996.

Statutory Authority: Code of Ala. 1975, §§ 22-27-3, 22-27-7.