Water Quality

Pesticide and Fertilizer Storage

The containment program regulates firms that store bulk fertilizers and pesticides and the mixing and loading of pesticides. The containment regulations were developed in 1986. Since then, they have been modified several times, with the most recent date being 2006.

Fertilizer and Pesticide Bulk Storage Rules
Chapter ATCP 33, Wis. Adm. Code. This is the actual text of the administrative code governing fertilizer bulk storage.

Concrete Design Standards 
Wisconsin's bulk storage rule for pesticides and fertilizers requires that new concrete mixing and loading pads and secondary containment structures be designed and constructed in accordance to these standards.

Mixing and Loading Rules 
Section of rules dealing with mixing and loading of any quantity of pesticide by any person.

Approved Liner List (2 page PDF)
A list of liner materials approved for use as fertilizer secondary containment structure liners. This list does not include materials approved for temporary or mobile pesticide mixing and loading pads.

Concrete Repair Contractors and Suppliers (5 page PDF)
This document has a listing of concrete repair contractors as well as some product suppliers. In many cases, the companies listed may be willing to be used as a resource for providing recommendations for repairing concrete containment structures or mix/load pads.

Sample Discharge Response Plan (18 page PDF)
Bulk storage facilities are required to maintain a plan for responding to spills of pesticides or fertilizers. DATCP and the Wisconsin Fertilizer and Chemical Association have cooperatively created a generic plan that can be tailored for a facility's use.

Caulk Recommendations (1 page PDF)
A list of products that have been used for a variety of crack and joint sealing applications. The products in the yellow or shaded part of the pdf are the only department-approved products for crack and joint sealing.

Concrete Design Contractors (4 page PDF) Updated Nov. 1, 2012
Plans for new or substantially altered mix/load pads and containment structures at a bulk agrichemical storage facility must be professionally designed. A facility operator is not required to choose from the list provided. The design contractors listed are shown because they have designed structures for agrichemical containment that meet the requirements of Wis. Admin Code ch. ATCP 33 – Fertilizer and Pesticide Bulk Storage and Wisconsin Minimum Design and Construction Standards for Concrete Mixing and Loading Pads and Secondary Containment Structures. This list in no way constitutes approval or recommendation of any of the contractors listed.