New Hampshire Code of Administrative Rules
Pes - Pesticide Control Board
Chapter Pes 800 - DISPOSAL AND STORAGE OF PESTICIDES AND PESTICIDE CONTAINERS
Part Pes 804 - STORAGE AND DISTRIBUTION OF BULK PESTICIDES AND CONTAINMENT OF OPERATIONS THAT DISPENSE PESTICIDES
Section Pes 804.05 - Design and Construction of Containment Structures

(a) The containment structure shall be adequate to prevent water and other liquids from seeping into or flowing onto it from surrounding surfaces, including land surfaces and adjacent roofs. Any containment structure in use shall, at a minimum, be adequate to prevent run-in or seepage during a 25 year, 24 hour rainfall event.

(b) Appurtenances and containers shall be protected against breakage or damage from operating personnel and moving equipment. Means of protection shall include but are not limited to supports to prevent sagging, flexible connections, the use of guard rails, barriers, and cages.

(c) No containment structure shall have a discharge outlet or gravity drain through the base, nor shall a containment structure have appurtenances installed through a wall, except for direct interconnections between adjacent containment structures which meet the requirements of this part. Appurtenances shall be configured in such a way that spills or leaks can readily be observed.

(d) The containment structure shall be located at a minimum distance of 400 feet from public wells and public surface water supplies and at a minimum distance of 75 feet from private water wells and the high water mark of other surface waters.