The requirements in this rule apply to all confinement feeding operation structures unless specifically stated otherwise.
* Unformed structures. For an unformed manure storage structure, each monitoring well may be installed in the existing bore holes resulting from the corings required in subrule 65.15(6).
* Formed structures. For a formed manure storage structure, at least three temporary monitoring wells shall be installed as close as possible to three corners of the structure, with one of the wells close to the corner of deepest excavation. If the formed structure is circular, the three monitoring wells shall be equally spaced and one well shall be placed at the point of deepest excavation.
* Digital photos;
* Description of soils including mottling;
* Construction specifications; and
* Weather conditions both prior to and during the period in which test pits are open.
* 4,000 pounds per square inch (psi) for walls, floors, beams, columns and pumpouts;
* 3,000 psi for the footings.
The average concrete strength by testing shall not be below design strength. No single test result shall be more than 500 psi less than the minimum compressive strength.
Iowa Admin. Code r. 567-65.15