Colorado Code § 25-8-501.1

Permit required for point source water pollution control - definitions - housed commercial swine feeding operations - legislative declaration
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(1) The people of the
state of Colorado hereby find, determine, and declare that the advent of large housed commercial
swine feeding operations in Colorado has presented new challenges to ensuring that the quality
of the state's environment is preserved and protected. As distinguished from more traditional
operations that historically have characterized Colorado's livestock industry, large housed swine
feeding operations use significant amounts of process water for flushing and disposing of swine
waste, commonly store this waste in large impoundments, and dispose of it through land
application. The waste storage, handling and disposal by such operations are particularly
odorous and offensive. The people further find that it is necessary to ensure that the storage and
land application of waste by housed commercial swine feeding operations is done in a
responsible manner, so as not to adversely impact Colorado's valuable air, land and water
resources.
(2) As used in this section, unless the context otherwise requires:
(a) "Agronomic rate of application" means the rate of application of nutrients to plants
that is necessary to satisfy the plants' nutritional requirements while strictly minimizing the
amount of nutrients that run off to surface waters or which pass below the root zone of the
plants, as specified by the most current published fertilizer suggestions of the Colorado state
university cooperative extension service for the plants, or most closely related plant type, to
which the nutrients are applied.
(b) "Housed commercial swine feeding operation" means a housed swine feeding
operation that is capable of housing eight hundred thousand pounds or more of live animal
weight of swine at any one time or is deemed a commercial operation under local zoning or land
use regulations. Two or more housed swine confined feeding operations shall be considered to
comprise a single housed commercial swine feeding operation if they are under common or
affiliated ownership or management, and are adjacent to or utilize a common area or system for
manure disposal, are integrated in any way, are located or discharge within the same watershed
or into watersheds that are hydrologically connected, or are located on or discharge onto land
overlying the same groundwater aquifer.
(c) "Housed swine feeding operation" means the practice of raising swine in buildings,
or other enclosed structures wherein swine of any size are fed for forty-five days or longer in any
twelve-month period, and crop or forage growth or production is not sustained in the area of
confinement.
(d) "Process wastewater" means any process-generated wastewater used in a housed
commercial swine feeding operation, including water used for feeding, flushing, or washing, and
any water or precipitation that comes into contact with any manure, urine, or any product used in
or resulting from the production of swine.
(3) No person shall operate, construct, or expand a housed commercial swine feeding
operation without first having obtained an individual discharge permit from the division.
(4) On or before March 31, 1999, the commission shall promulgate rules necessary to
ensure the issuance and effective administration and enforcement of permits under this section
by July 1, 1999. Such rules shall incorporate the preceding subsection (3) and shall, at a
minimum, require:
(a) That the owner or operator of a housed commercial swine feeding operation must
obtain division approval of construction, operations and swine waste management plans that, for
any land waste application, includes a detailed agronomic analysis. Said plans shall employ the
best available waste management practices, provide for remediation of residual soil and
groundwater contamination, and ensure that disposal of solid or liquid waste to the soil not
exceed agronomic rates of application.
(b) That appropriate setbacks for maintaining water quality be established for land waste
application areas and waste impoundments;
(c) That waste impoundments or manure stock piles shall not be located within a one-
hundred-year floodplain unless proper flood proofing measures are designed and constructed;
(d) That the owner or operator of the housed commercial swine feeding operation shall
provide financial assurances for the final closure of the housed commercial swine feeding
operation, the conduct of any necessary postclosure activities, the undertaking of any corrective
action made necessary by migration of contaminants from the housed commercial swine feeding
operation into the soil and groundwater, or cleanup of any spill or breach;
(e) That the owner or operator of a housed commercial swine feeding operation shall
ensure that no solid or liquid waste generated by it shall be applied to land by any person at a
rate that exceeds, in amount or duration, the agronomic rate of application; and
(f) That, because waste storage and disposal by housed commercial swine feeding
operations pose particular jeopardy for state trust lands, in light of the mandate in the Colorado
constitution, article IX, section 10, that state land board trust lands be held in trust and be
protected and enhanced to promote long-term productivity and sound stewardship, the
construction, operations and waste management plans approved for housed commercial swine
feeding operations on such lands, shall not permit the degradation of the physical attributes or
value of any state trust lands.
(5) Any spill or contamination by a housed commercial swine feeding operation shall be
reported immediately to the division and the county or district public health agency for the
county in which the housed commercial swine feeding operation is conducted, and, within
twenty-four hours after the spill or contamination, a written report shall be filed with the division
and the county or district public health agency for the county in which the housed commercial
swine feeding operation is conducted.
(6) Housed commercial swine feeding operations shall submit to the division and the
county or district public health agency quarterly, comprehensive monitoring reports and
agronomic analyses that demonstrate that the operation has land-applied solid and liquid waste at
no greater than agronomic rates. The division shall require the sampling and monitoring of
chemical and appropriate biological parameters to protect the quality and existing and future
beneficial uses of groundwater including, at a minimum, nitrogen, phosphorus, heavy metals,
and salts. At a minimum, the monitoring program shall include quarterly samples, analysis, and
reporting of the groundwater, soils within the root zone, and soils beneath the root zone within
each waste application site, and shall also include monitoring to ensure that no excessive seepage
occurs from any waste impoundments.
(7) Repealed.
(8) The division shall enforce the provisions of this section and shall take immediate
enforcement action against any housed commercial swine feeding operation that has exceeded
the agronomic rate limit of this section. In addition, any person who may be adversely affected
by a housed commercial swine feeding operation may enforce these provisions directly against
the operation by filing a civil action in the district court in the county in which the person
resides.
(9) These provisions shall not preclude any local government from imposing
requirements more restrictive than those contained in this section.

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