Colorado Code § 25-7-138

Housed commercial swine feeding operations - waste impoundments - odor emissions - fund created
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(1) All new or expanded anaerobic process wastewater vessels
and impoundments, including, but not limited to, treatment or storage lagoons, constructed or
under construction for use in connection with a housed commercial swine feeding operation as
defined in section 25-8-501.1 (2)(b) shall be covered, or operated with technologies or practices
that are as effective as covers at minimizing odor from the operation, to capture, recover,
incinerate, or otherwise manage odorous gases to minimize, to the greatest extent practicable, the
emission of such gases into the atmosphere. The housed commercial swine feeding operation
shall submit to the department of public health and environment information sufficient to
demonstrate that the technologies and practices used are as effective as covers at minimizing
odor from the operation. The housed commercial swine feeding operation shall manage odor
emissions such that odor emissions from the operation shall not be detected at or beyond the
property boundary after the odorous air has been diluted with seven volumes of odor-free air.
The housed commercial swine feeding operation shall manage odor emissions such that odor
emissions from the operation shall not be detected at any off-site receptor after the odorous air
has been diluted with two volumes of odor-free air. For purposes of this section, "receptor"
means any occupied dwelling used as a primary dwelling or its curtilage, a public or private
school, or a place of business. As used in this section, "anaerobic" means a waste treatment
method that, in whole or in part, does not utilize air or oxygen. All new aerobic impoundments
shall employ technologies to ensure maintenance of aerobic conditions or otherwise to minimize
the emission of odorous gases to the greatest extent practicable. As used in this section,
"aerobic" means a waste treatment method that utilizes air or oxygen.
(2) All existing anaerobic process wastewater vessels and impoundments, including, but
not limited to, aeration tanks and treatment or storage lagoons, owned or operated for use in
connection with a housed commercial swine feeding operation as defined in section 25-8-501.1
(2)(b) shall be covered, or operated with technologies or practices that are as effective as covers
at minimizing odor from the operation, to capture, recover, incinerate, or otherwise manage
odorous gases to minimize, to the greatest extent practicable, the emission of such gases into the
atmosphere. The housed commercial swine feeding operation shall submit to the department of
public health and environment information sufficient to demonstrate that the technologies and
practices used are as effective as covers at minimizing odor from the operation. The housed
commercial swine feeding operation shall manage odor emissions such that odor emissions from
the operation shall not be detected at or beyond the property boundary after the odorous air has
been diluted with seven volumes of odor-free air. The housed commercial swine feeding
operation shall manage odor emissions such that odor emissions from the operation shall not be
detected at any off-site receptor after the odorous air has been diluted with two volumes of odor-
free air. For purposes of this section, "receptor" means any occupied dwelling used as a primary
dwelling or its curtilage, a public or private school, or a place of business. All existing aerobic
impoundments shall employ technologies to ensure maintenance of aerobic conditions or
otherwise to minimize the emission of odorous gases to the greatest extent practicable.
(3) The commission shall, by rules promulgated on or before March 1, 1999, require that
all housed commercial swine feeding operations employ technology to minimize to the greatest
extent practicable off-site odor emissions from all aspects of its operations, including odor from
its swine confinement structures, manure and composting storage sites, and odor and aerosol
drift from land application equipment and sites.
(4) No new land waste application site or new waste impoundment used in connection
with a housed commercial swine feeding operation, shall be located less than:
(a) One mile from an occupied dwelling without the written consent of the owner of the
dwelling;
(b) One mile from a public or private school without the written consent of the school's
board of trustees or board of directors; and
(c) One mile from the boundaries of any incorporated municipality without the consent
of the governing body of the municipality by resolution. As used in this subsection (4), a new
land waste application site and new waste impoundment are those that were not in use as of June
1, 1998.
(5) The division shall enforce the provisions of this section. The division may delegate
enforcement of the provisions of this section to any county or district public health agency. If the
division delegates enforcement of this section, the division shall monitor the actions of any
county or district public health agency as such actions pertain to enforcement of this section. The
division shall assess a housed commercial swine feeding operation an annual fee, not to exceed
seven cents per animal, based on the operation's working capacity, to offset the division's direct
and indirect costs of enforcement, compliance, and regulation pursuant to this section. This fee
shall be designated to fund an inspection and complaint response and enforcement program. By
mutual agreement, any county or district public health agency that assists in enforcement of this
section shall receive funding to conduct inspections and respond to complaints. As used in this
subsection (5), "working capacity" means the number of swine the housed commercial swine
feeding operation is capable of housing at any one time. 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.
(6) All moneys collected pursuant to this section shall be transmitted to the state
treasurer, who shall credit the same to the housed commercial swine feeding operation fund,
which fund is hereby created in the state treasury. The moneys in such fund shall be subject to
annual appropriation by the general assembly for the purposes of this section, including the
reimbursement of county or district public health agencies for assistance in the enforcement of
this section. Any interest earned on moneys in the fund shall remain in the fund and shall not
revert to the general fund at the end of any fiscal year.

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