Chapter 8.12
CHEMICAL MIXING AT AIRPORT
Sections:
8.12.010 Concrete slab requirements.
8.12.020 Drainage requirements.
8.12.030 On-site chemical storage.
8.12.040 Spill control and prevention.
8.12.010 Concrete slab requirements.
All applicators of chemicals by aircraft operating from the Jefferson County/city of Madras airport shall be required to install a concrete slab sloped to drain to a sump at the interior of the slab. The slab shall be a minimum of six inches thick of six sacks of cement per cubic yard concrete with a twenty-eight (28) day compressive strength of four thousand (4,000) psi. It shall include an admixture of a minimum of one and one-half pounds per cubic yard of fibremesh, or equivalent, reinforcing. The slab will be constructed above a liner of ten (10) mil. PVC, an equivalent of twelve (12) mil. polyethylene sheeting which may be in two six mil. layers, or equivalent Hypalon. The liner shall be either one piece or all seams shall be heat welded. The liner shall be placed approximately six inches below the slab, extend to the limits of the slab and sump, and shall be sloped up at the outer edges to at least the level of the bottom of the slab. The liner shall be protected with a two inch thickness of fine sand backfill or a geotextile equivalent to polyfill TS-700, both above and below. The mixing and wash down slab shall be a minimum of thirty (30) feet by thirty (30) feet or sufficiently large enough to accommodate the largest aircraft being used for spraying chemicals and extend at least one foot beyond the airplane in each direction, whichever is the greater. The area around the concrete slab shall be sloped to drain away from the slab in order to prevent runoff from the adjacent area to enter the sump. The concrete slab shall be sloped from the outer edge of the slab a minimum of one-eighth inch per foot to drain to the sump area. The sump area shall be a minimum of three feet by two and one-half feet and covered with a metal grate. The sump shall be capable of collecting at least one hundred ten (110) percent of the largest storage capacity of any aircraft used by the applicator at all times. The sump shall be sealed watertight with an appropriate caulk and water tested for a twenty-four (24) hour period.
A minimum of one recycle rinse water tank will be placed on the slab so that all leftover rinse water containing insecticides, herbicides, and fertilizers would be stored for reuse. There shall be more than one recycle tank if required for different types of chemicals being used.
All precipitation or accumulation on said slab, from either wash down of airplane or chemical mixing and loading of airplane, shall be transferred into the storage tank and used with the mixing of new chemicals. (Ord. O-33-91 § 1, 1991)
8.12.020 Drainage requirements.
All aerial applicators operating from the Jefferson County/city of Madras airport will also have and use a device which can be portable placed under the dumpgate, Y-strainer, and pump drain to collect any residual sprays and rinse water which may be discharged from the aircraft. No drained sprays or rinse water may be purposefully drained onto the concrete slab or into the emergency sump. For purging the spray booms of the aircraft, a device must be available, and used, to control spray from the nozzles. Any residual sprays and rinse water collected will be contained above ground, and will be used in subsequent compatible spray applications. (Ord. O-33-91 § 2, 1991)
8.12.030 On-site chemical storage.
The on-site chemical storage for the chemicals being used by aerial applicators operating from the Jefferson County/city of Madras airport shall be constructed upon a similar slab as described in Section 8.12.010 of this chapter of a sufficient size to accommodate the storage of all containers. (Ord. O-33-91 § 3, 1991)
8.12.040 Spill control and prevention.
Any aerial applicator using the Jefferson County/city of Madras airport shall furnish to Jefferson County and the city of Madras an approved SPCC (spill prevention control and counter measure plan), as required by the EPA or DEQ for the handling of a chemical spill. Such plan shall describe the measures to be taken if a spill occurs whether inside of a containment area or outside of a containment area. (Ord. O-33-91 § 4, 1991)
8.12.050 Inspections.
All aerial applicators of chemicals for spraying of chemicals or fertilizers operating from the Jefferson County/city of Madras airport shall permit an agent of Jefferson County or the city of Madras to inspect the facilities from time to time upon reasonable notice and shall grant to Jefferson County and the City of Madras officials ready access at all reasonable times to all parts of the premises for purposes of inspection, sampling, records examination, or in the performance of their duties to inspect in compliance with this chapter. (Ord. O-33-91 § 5, 1991)
8.12.060 Compliance required.
No applicators shall continue to operate from the Jefferson County/city of Madras airport for the purpose of aerial chemical application without having complied with this chapter. (Ord. O-33-91 § 6, 1991)
8.12.070 Violations.
It is unlawful and a violation of this chapter for any aerial applicator to fill an airplane with chemicals, fertilizers, or other substances for spray application in an area within the boundaries of the Jefferson County/city airport, which is not within the containment area described in this chapter, nor shall it be lawful for any aerial applicator to wash down an aircraft within the bounds of the airport outside the containment area described in this chapter. (Ord. O-33-91 § 7, 1991)