Amend CSHB 4306 (house committee report) by adding the following appropriately numbered SECTION to the bill and renumbering subsequent SECTIONS of the bill accordingly:

SECTION ____.  (a) In this section:

(1)  "Board" means the Texas Water Development Board.

(2)  "Commission" means the Texas Commission on Environmental Quality.

(3)  "Water retention infrastructure" means infrastructure located within one mile of the Rio Grande River related to the retention of water.

(b)  The board and the commission jointly shall:

(1)  conduct a study concerning the effects the construction of water retention infrastructure would have on storm drainage, water quality, and environmental contamination matters in this state; and

(2)  develop recommendations for actions that may prevent or mitigate any negative effects on storm drainage, water quality, or environmental contamination matters resulting from the construction of water retention infrastructure.

(c)  The study must investigate:

(1)  whether and to what extent the construction of water retention infrastructure would cause or contribute to flood management or other storm drainage problems in this state;

(2)  whether and to what extent the construction of water retention infrastructure would cause or contribute to negative environmental contamination or other environmental effects in this state;

(3)  whether certain designs or methods of construction of water retention infrastructure would prevent or mitigate any negative effects identified under Subdivision (1) or (2) of this subsection;

(4)  any economic effects expected to result from any negative effects identified under Subdivision (1) or (2) of this subsection; and

(5)  what actions by the state would best prevent or mitigate any negative effects identified under Subdivision (1) or (2) of this subsection.

(d)  Not later than March 1, 2020, the board and the commission shall submit to the governor, the lieutenant governor, and each standing committee of the legislature having primary jurisdiction over water development and environmental matters:

(1)  a report of the findings of the study conducted under this section; and

(2)  recommendations for actions that may prevent or mitigate any negative storm drainage, water quality, or environmental contamination effects resulting from the construction of water retention infrastructure.

(e)  This section expires January 1, 2021.