HomeMy WebLinkAbout20011471.tiff NOTICE OF
FINAL READING OF ORDINANCE
Pursuant to the Weld County Home Rule Charter, Ordinance Number 2001-2 was introduced
on first reading on March 14, 2001, and a public hearing and second reading was held on
April 9, 2001. A public hearing and final reading was completed on April 30, with no change
being made to the text of said Ordinance, and on motion duly made and seconded, was
adopted. Effective date of said Ordinance is listed below.
Any backup material, exhibits or information previously submitted to the Board of County
Commissioners concerning this matter may be examined in the office of the Clerk to the Board
of County Commissioners, located in the Weld County Centennial Center, 915 10th Street,
Third Floor, Greeley, Colorado, between the hours of 8:00 a.m. and 5:00 p.m., Monday thru
Friday, or may be accessed through the Weld County Web Page (www.co.weld.co.us). E-Mail
messages sent to an individual Commissioner may not be included in the case file. To ensure
inclusion of your E-Mail correspondence into the case file, please send a copy to
charding@co.weld.co.us.
ORDINANCE NO. 2001-2
ORDINANCE TITLE: IN THE MATTER OF REPEALING AND REENACTING, WITH
AMENDMENTS, CHAPTER 15 VEGETATION, OF THE WELD COUNTY CODE
EFFECTIVE DATE: May 14, 2001
BOARD OF COUNTY COMMISSIONERS
WELD COUNTY, COLORADO
DATED: April 4, 2001
PUBLISHED: April 9, 2001, in the Tri-Town Farmer and Miner
2001-1471
Affidavit of Publication
STATE OF COLORADO
County of Weld SS.
•
I A. Winkler Riesel of said County of Weld being NOTICE Of MEAL MUM
duly sworn,say that I am publisher of Of ORDINANCE
FARMER&MINER Pursuaitbete Wqy
that the same is a weekly newspaper of general Home Charter R�ulee
Ordinance
circulation was printed and published in the town of was intrroducceon rst
rearing on March 14,2001.
FREDERICK and a
aecand��hearing nekton
tonin said county ic estate that the notice of reodngwosneong
advertisement,of which the annexed is a true copy has Aindand l adinge w
been published in said weekly newspaper for one final reading was
completed an April 30.with
ONE consecutive weeks: that the notice was the at sees
published in the regular and entire issue of every old a1 motion duty mode
number of said newspaper during the period and time and seconded. was
of publication of said notice and in the newspaper adopted. Effective dales
proper and not in a supplement thereof: that the first said Ordinance is listed
below.publication of said notice was contained in the issue of
said newspaper bearing the date of Any bockup material,
exhibits or Information •
MAY 9 A D.2001 and the last publication thereof,in PrevioWy submitted to the '
the issue of said newspaper,bearing date, the 9th Board or County
day of MAY 200L that the said Clsr once rr y concerning
examin
ntfroaxeo the the Clerk to
FARMER &MINER the Board of County
has been published continuously and uninterruptedlyCo Ohers• located In
th Center,
ounty Cenfennbl
during the period of at least fifty-two consecutive Center•91510th Street.Third
weeks next prior to the first issue thereof containing Floor, Greeley. Colorado,
said notice or advertisement above referred to: and between the hours of 8:00
that said newspaper was at the time of each of the am.at 5.00p.m.,Monday
publications of said notice duly qualified for that thru Friday, or may be
purpose within the meaning of an act entitled. "An accessed through the Weld
County Web Pape
Act Concerning Legal Notices, Advertisements and
Publications and the Fees of Printers and Publishers messages
sent
E'M n
sent to an
thereof, and to Repeal all Acts and Parts of Acts in krdsWsaCac �,
Conflict with the Provisions of this Ac[" approved not be included ed in In n,e ther case
April 7, 1921, and all amendments thereof, and hie. To ensure Inclusion of
particularly as amended by an act approved, March yourE-Malicorrespondence
30,1923,and an act approved May 13,1931. abtheaaFe p pleoreterto
copy to
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S21, ORDNANCE NO. 2001-2
.— Yvbhsh; ORDINANCE TITLE: IN Ti-E
MATTER OF REPEAt1NG AND
Subscribed and sworn to before me this 9th day of REENACTING. WITH
AMENDMENTS CHAPTER 15
VEGETATION.OF THE WELD
MAY. A D. 2001 cOONIv CODE,
-.... EFFECDVEDATE May 142001
BOARD OF COUNTY
COMMISSIONERS
WELD
Notary Pu i COLORA O
DATED: May 4,2001
P.O.BOX 125 the P1 OBSHED: May 9.2001.v�Farmer and
Miner.
FT.LUPTON. CO 80621
AAv C nR mt..:..: Expires
NOTICE OF
SECOND READING OF ORDINANCE
Pursuant to the Weld County Home Rule Charter, Code Ordinance Number 2001-2 was
introduced on first reading on March 14, 2001, and a public hearing and second reading was
held on April 9, 2001, with no change being made to the text of said Ordinance. A public
hearing and third reading is scheduled to be held in the Chambers of the Board, First Floor
Hearing Room, 915 10th Street, Greeley, Colorado 80631 on April 30, 2001. All persons in
any manner interested in the next reading of said Ordinance are requested to attend and may
be heard.
Please contact the Clerk to the Board's Office at phone (970) 356-4000, Extension 4226, or fax
(970) 352-0242, prior to the day of the hearing if, as a result of a disability, you require
reasonable accommodations in order to participate in this hearing.
Any backup material, exhibits or information previously submitted to the Board of County
Commissioners concerning this matter may be examined in the office of the Clerk to the Board
of County Commissioners, located in the Weld County Centennial Center, 915 10th Street,
Third Floor, Greeley, Colorado, between the hours of 8:00 a.m. and 5:00 p.m., Monday thru
Friday, or may be accessed through the Weld County Web Page (www.co.weld.co.us). E-Mail
messages sent to an individual Commissioner may not be included in the case file. To ensure
inclusion of your E-Mail correspondence into the case file, please send a copy to
charding@co.weld.co.us.
ORDINANCE NO. 2001-2
ORDINANCE TITLE: IN THE MATTER OF REPEALING AND REENACTING, WITH
AMENDMENTS, CHAPTER 15 VEGETATION, OF THE WELD COUNTY CODE
DATE OF NEXT READING: April 30, 2001, at 9:00 a.m.
BOARD OF COUNTY COMMISSIONERS
WELD COUNTY, COLORADO
DATED: April 13, 2001
PUBLISHED: April 18, 2001, in the Tri-Town Farmer and Miner
Affidavit of Publication
STATE OF COLORADO SECOND READING Of -
County of Weld SS. ORDINANCE
I A. Winkler Riesel of said County of Weld being PursuanttotheWeld County
duly sworn,say that I am publisher of Home Rule Charter,Code
Ordinance Number 2001-2
FARMER&MINER was Introduced on first
reading on March 14,2001,
that the same is a weekly newspaper of general
circulation was printed and published in the town of and a public nearing and
second reading wds held on
FREDERICK April9,2001,with no change'
being made to the text of
in said county and state that the notice of sold Ordinance. A public
advertisement,of which the annexed is a true copy has hearing and third reading is
been published in said weekly newspaper for scheduled to be held in the
Chambers of the board. All
persons in any manner
ONE consecutive weeks: that the notice was
Interested in the next re adi ng
published in the regular and entire issue of every of said Ordinance are
number of said newspaper during the period and time requested to attend and
of publication of said notice and in the newspaper may be heard.
proper and not in a supplement thereof: that the first
publication of said notice was contained in the issue of Please contact the Clerk to
the Board's Office at phone
said newspaper bearing the date of
(970) 356-4000. Extension
4226.or fax(970)352-0242.
APRIL 18 A.D. 2001 and the last publication pllortothe day oftheheoring
thereof,in the issue of said newspaper,bearing date, I.os a result of a disability.
the 18TH day of APRIL 2001 that the said you require reasonable
acc omrll W ations in order to
participate in this hearing.
FARMER &MINER
has been published continuously and uninterruptedly anybockupmateral,exhibits
during the period of at least fifty-two consecutive or information previously
submitted
weeks next prior to the first issue thereof containing County
said notice or advertisement above referred to: and concerning
Commissioners
to the Board of
onermng this matter may
that said newspaper was at the time of each of the be examined in the office of
publications of said notice duly qualified for that the Clerk of the Board of
purpose within the meaning of an act entitled. "An County comet loners.
Act Concerning Legal Notices, Advertisements and located in the W aunty
Publications and the Fees of Printers and Publishers Centennial Center,91 1 Oth
thereof, and to Repeal all Acts and Parts of Acts in Street. Third Floor. Greeley.
Conflict with the Provisions of this Act" approved Colorado. between the
hApril 7, 1921, and all amendments thereof, and p.m.,arsMonday th-u Friday.or
particularly as amended by an act approved, March may be accessed through
30, 1923,and an act approved May 13,1931.. thec County web Page
w.
4 mail messages sent tonose
an
not be a ssbnermay
��� not tie nsre in sue
PII�Sher fll6. To ensure inclusion of
your E-mail correspondence
Subscribed and sworn to before me this 18th day of into tnecnsefilcopypieosase to
o
chorang@co.weld.co.us.
APRIL. A.D. 2001
ORDINANCE NO. 2001-2
ORDINANCE TITLE: IN THE
MATTER OF REPEALING AND
RE'.Nv.CTING WITH
AMENDMENTS, CHAPTER 15
otary Pub Ic VEGETATION, OF THE WELD
COUNTY CODE.
P.O.BOX 125 DATE OF NEXT READING:April
30,2001,at 9:00 o.m.
BOARD OF COUNTY
FT.LUPTON. CO 80621 COMMISSIONERS
WELD COUNTY,
COLORADO
DATED: April 13,7001
Published in the Tri-Town
Farmer and Miner April 18.
2001.
WELD COUNTY
CODE ORDINANCE 2001-2
IN THE MATTER OF REPEALING AND REENACTING, WITH AMENDMENTS, CHAPTER 15
VEGETATION, OF THE WELD COUNTY CODE
BE IT ORDAINED BY THE BOARD OF COUNTY COMMISSIONERS OF THE COUNTY OF
WELD, STATE OF COLORADO:
WHEREAS, the Board of County Commissioners of the County of Weld, State of Colorado,
pursuant to Colorado statute and the Weld County Home Rule Charter, is vested with the
authority of administering the affairs of Weld County, Colorado, and
WHEREAS, the Board of County Commissioners, on December 28, 2000, adopted Weld
County Code Ordinance 2000-1, enacting a comprehensive Code for the County of Weld,
including the codification of all previously adopted ordinances of a general and permanent
nature enacted on or before said date of adoption, and
WHEREAS, the Weld County Code is in need of revision and clarification with regard to
procedures, terms, and requirement therein.
NOW, THEREFORE, BE IT ORDAINED by the Board of County Commissioners of the County
of Weld, State of Colorado, that certain existing Chapters of the Weld County Code be, and
hereby are, repealed and re-enacted, with amendments, and the various Chapters are revised
to read as follows.
CHAPTER 15
VEGETATION
ARTICLE I
Noxious Weed Management
Sec. 15-1-10. Description of Act.
A. The Colorado Noxious Weed Management Act, Section 35-5.5-101, et seq., C.R.S.,
(hereinafter"the Act") states that certain noxious weeds pose a threat to the continued
economic and environmental value of the land in Colorado and that they must be
managed by all landowners in the State. The Act states that local governments (cities
and counties) are directed to take the necessary steps to manage the noxious weeds in
their respective jurisdictions. They are further directed to appoint an advisory
commission whose responsibilities are threefold:
1. Develop recommended management criteria and integrated weed management
plans for managing the designated noxious weeds.
2. Recommend the addition, if necessary, of noxious weeds that shall be subject to
integrated management.
3. Recommend to the Board of County Commissioners the names of those
landowners who shall be required to submit integrated weed management plans
for managing the noxious weeds on their property.
B. The Act further states that each local governing body is to develop and adopt a Noxious
Weed Management Plan for all lands within its jurisdictional boundaries.
Sec. 15-1-20. Weed species to be controlled.
A. Pursuant to the Act, Weld County has formed the Weld County Noxious Weed
Management Advisory Board to develop and recommend a Noxious Weed Management
Plan and to review said Plan at least every three (3) years. There are nine (9)weed
species that are designated for management in Weld County, as follows.
Leafy Spurge (Euphorbia esula)
Canada Thistle (Cirsium arvense)
Musk Thistle (Carduus nutans)
Field Bindweed (Convolvolus arvensis)
Russian Knapweed (Acroptilon repens)
Scotch Thistle (Onopordum acanthium)
Diffuse Knapweed (Centaurea diffusa)
Spotted Knapweed (Centaurea maculosa)
Dalmatian Toadflax (Linaria dalmatica)
B. Of the weed species listed above, Canada thistle, field bindweed, leafy spurge, musk
and scotch thistles, and Russian knapweed cover the most acreage in the County and
pose the greatest economic and environmental threat to the County. Diffuse knapweed
is currently localized to a few drainages and rights-of-way in the southwest part of the
County. Dalmatian toadflax is appearing in the northwest part of the County.
Sec. 15-1-30. Objectives and goals.
A. Statement of objectives. The objectives of the Department of Public Works with respect
to weed management in the County are fourfold.
1. Develop and carry out a comprehensive noxious weed control program on all
County rights-of-way and other County property, such as in sand and gravel
mining operations, grader shed lots and open space areas.
2. Establish an educational program, by using mailings and holding educational and
calibration seminars, that will effectively communicate weed management
information to the landowners in the County.
3. Identify uninformed or negligent landowners who are not carrying out weed
management programs on their property and provide technical support for
establishing weed management plans or enforce on properties, if necessary.
4. Work with all state and federal agencies, through intergovernmental agreements,
if necessary, towards establishing effective weed management programs on
their property.
B. Short-term goals (January 2000 to December 2004).
1. Annually update the map of the County roads for noxious weed infestations.
2. Continue to establish contact with landowners along waterways and other
environmentally sensitive areas who have noxious weed infestations.
3. Establish educational/calibration seminars (annually) that work directly with one
hundred fifty (150) to two hundred (200) landowners each year.
4. Have established contact with the Colorado Department of Transportation,
Department of Parks and Recreation, Colorado Land Board, Division of Wildlife
and U.S. Forest Service. Help them develop weed management plans and,
where appropriate, enter into cooperative intergovernmental agreements.
5. Continue to share weed control costs with landowners as funds are available
through current state grants designated for such purpose. Additional funds may
be sought to continue offering the same or similar cost-share program as may be
appropriate.
6. Develop intergovernmental agreements with communities throughout the County
for weed management along rural road rights-of-way.
7. Have established 150 - 200 biological control release sites throughout the
County in cooperation with the Colorado Department of Agriculture and private
landowners.
8. By 2003, have reduced the noxious weed acreage sprayed on County rights-of-
way by ten percent (10%) to fifteen percent (15%).
C. Long-term goals (January 2005 to December 2007).
1. Have reduced the noxious weed acreage sprayed on County rights-of-way by
thirty percent (30%) to forty percent (40%).
2. Have contacted and worked with most landowners Countywide who have a
noxious weed infestation.
3. Have established 400 - 500 biological control release sites in the County.
Sec. 15-1-40. Plan of work implementation.
A. Description of integrated weed management techniques. The weed species designated
as noxious and mandated for management are listed in Section 15-1-20.A of this
Chapter. Integrated weed management methods are to be used in managing these
weed species (Section 35-5.5-107, C.R.S.). Integrated management techniques include
education; preventive measures; and control measures including cultural, mechanical,
biological and chemical control. For the purposes of this plan, the following definitions
for the control measures will be used.
Biological control means the use of organisms such as sheep, goats, cattle,
insects and plant diseases to disrupt the growth of undesirable plants.
Chemical control means the use of herbicides or plant growth regulators to
disrupt the growth of undesirable plants.
Cultural control means those methodologies or management practices
conducted to favor the growth of desirable plants over undesirable plants,
including, but not limited to, maintaining an optimum fertility and plant moisture
status in an area, planting at optimum density and spatial arrangement in an
area, and planting species most suited to an area.
Mechanical control means those methodologies or management practices that
physically disrupt plant growth, including, but not limited to, tilling, mowing,
burning, flooding, mulching, hand-pulling and hoeing.
B. Management of the various noxious weeds will vary depending upon the site where the
plants are located. The integrated management options listed below are meant to
provide various management techniques for controlling the noxious weeds in the various
environmental sites they are found. By no means are all the management options
mentioned. Additional combinations of management techniques are possible which may
be submitted by private landowners. The integrated weed management plans submitted
by individual landowners will be evaluated by the County Vegetation Management
Specialist. If a dispute regarding a management plan arises, the landowner or occupant
may request an arbitration panel to determine the final management plan (Section 35-
5.5-109(4)(iii), C.R.S.).
Sec. 15-1-50. Management of leafy spurge.
A. Leafy spurge is a deep-rooted perennial plant that spreads by seeds and creeping roots.
It has a vast underground root system which makes it difficult to control with any one (1)
control technique. Leafy spurge is found primarily in riparian sites (along waterways
such as the Poudre and South Platte Rivers) in the County and also along irrigation
ditches, range and pastures, roadsides and other non-cropland sites.
B. Control measures.
1. Cultural control: Seeding perennial grasses and forbs can be an effective
management tool. Early emerging plant species that utilize early season
moisture such as smooth brome, streambank wheatgrass, luna pubescent
wheatgrass, western wheatgrass, Sherman big bluegrass or Bozoisky Russian
wild rye have reduced leafy spurge density and limited the spread and
establishment of new infestation. Sequential glyphosate applications followed by
a seeding of the above species has shown to be very effective in reducing an
existing stand of leafy spurge.
2. Mechanical control: Mechanical control of leafy spurge is difficult at best;
however, repeated mowing every fourteen (14) to twenty-one (21) days
throughout the summer, starting before flowering stage, will at least keep the
plants from going to seed and may reduce the underground root reserve;
however, mowing has shown to stimulate new shoot growth from roots.
Consequently, mowing alone may increase shoot density in an established
stand. Whether consistent mowing for consecutive years (two to three years)
will reduce the root mass and subsequently reduce an existing stand is unknown.
Research results are not available to indicate whether stand reduction or
eradication could be achieved through use of this technique.
3. Biological control:
a. Grazing with sheep and goats throughout the spring, summer and fall will
keep leafy spurge from going to seed and may reduce the underground
root reserve. This practice may also weaken the plants to make them
more susceptible to chemical control.
b. Several insect species that have been released by the USDA in the
United States are showing some control of leafy spurge. Numerous
species of flea beetles, Apthona SPP., feed on leafy spurge. Adults feed
on the foliage during the summer and the larvae burrow through the soil
and mine the roots and fine root hairs. These insects used alone may
not control leafy spurge. When used along with other insects such as
Spurgia esula, a gall midge which feeds on the flowers preventing seed
production, they will weaken the plant and make it more susceptible to
other control methods, particularly chemical control.
4. Chemical control: There are a number of herbicides labeled for use on leafy
spurge. Those that can be used independently or in combination with each other
are: picloram (Tordon®); dicamba (Clarity®); imazapic (Plateau®); 2,4-D (many
different formulations); glyphosate (Roundup®and Rodeo®); fosamine
(Krenite®) and any other EPA-approved chemicals labeled for use on leafy
spurge.
C. Integrated management options by site.
1. Range, pasture and riparian sites:
a. Option #1, Biological and Chemical Control: Grazing with sheep or goats
from early April through late August or early September, followed by a
herbicide treatment in late September or early October.
b. Option #2, Biological and Chemical Control: The release of insects such
as Apthona nigriscutis, A. (lava, A. lacertosa, A. cyperissiae, Spurgia
Esula, and other species conducive to the area can be made. A
herbicide treatment can be made during the true flower stage and in the
fall at sites where insects were not released.
c. Option #3, Mechanical and Chemical Control: Mowing can be carried out
throughout the season with the first mowing cycle at the bud stage.
Mowing should stop during late August followed by a herbicide treatment
during late September or early October (before a hard freeze).
d. Option #4, Biological or Mechanical Control Only: The use of sheep or
goats or mowing should be used all season to keep leafy spurge from
going to seed. Whether this method will keep the existing infestation
from spreading by underground root growth is uncertain.
e. Option #5, Chemical Control Only: Herbicides should be used in the
spring, early summer during the true flower stage and in the fall just
before a hard freeze. Only the herbicides labeled for the site intended
will be used.
2. Along irrigation ditches:
a. Chemical Control: Herbicides can be used in the spring, early summer
during the true flower stage, and in the fall just before a hard freeze.
Only the herbicides labeled for the site intended will be used.
3. Road rights-of-way and other non-crop areas:
a. Option #1, Mechanical and Chemical Control: One (1) mowing cycle can
be carried out at the bud to early flower stage. A herbicide application
should be made at the true flower stage.
b. Option #2, Chemical Control Only: Herbicides can be used in the spring
or early summer during the true flower stage and in the fall just before a
hard freeze. Only the herbicides labeled for use on roadsides and other
non-cropland areas will be used.
Sec. 15-1-60. Management of Russian knapweed.
A. Russian knapweed is a non-native perennial plant that spreads by seeds and creeping
roots. It has the ability to release chemicals into the environment as foliage decays
which inhibit the growth of surrounding vegetation (allelopathic properties). Thus, once
established, Russian knapweed can colonize an area rapidly. Russian knapweed is
found primarily in range and pastures, roadsides and other non-cropland sites in the
County.
B. Control measures.
1. Cultural control: Seeding perennial grasses such as smooth brome, streambank
wheatgrass, luna pubescent wheatgrass, western wheatgrass, Sherman big
bluegrass, or Bozoisky Russian wild rye will help compete with Russian
knapweed and slow its spread. In addition, stimulating grass growth by fertilizing
and/or irrigation should increase grass competition. Due to the allelopathic
properties of Russian knapweed, other control techniques such as judicious
chemical control would have to be implemented in order to give grasses a
chance to compete.
2. Mechanical control: Mechanical control of Russian knapweed could be carried
out throughout the summer with repeated mowing every fourteen (14) to twenty-
one (21) days. This would at least keep Russian knapweed from going to seed;
however, mowing has shown to stimulate new shoot growth from roots.
Consequently, mowing alone may increase shoot density in an established
stand. Whether consistent mowing for consecutive years (two to three years)
will reduce the root mass and subsequently reduce an existing stand is not
known.
3. Biological control: There are currently no biological control agents available for
Russian knapweed.
4. Chemical control: There are a number of herbicides labeled for use on Russian
knapweed. Those that can be used independently or in combination with each
other are: chlorsulfuron (Telar®); picloram (Tordon®); dicamba (Clarity®);
clopyralid and 2,4-D (Curtail®); clopyralid and triclopyr (Redeem R&P®); 2,4-D
(many different formulations); glyphosate (Roundup®and Rodeo®) and any
other EPA-approved chemical labeled for use on Russian knapweed.
C. Integrated management options by site.
1. Range and pastures:
a. Option #1, Mechanical and Chemical: Mowing can be carried out
throughout the season with the first and successive mowing cycles
carried out at the bud stage. A herbicide treatment can then be made in
the fall before a hard freeze.
b. Option #2, Cultural and Chemical: An herbicide application, using short
residual herbicides such as glyphosate and/or 2,4-D can be made,
followed up by reseeding with a competitive grass from those listed in
Section 15-1-60.6.1 of this Chapter. In addition, fertilization or irrigation
could be instituted to stimulate grass growth.
c. Option #3, Chemical Control Only: Herbicide applications can be made
to Russian knapweed during the bud stage, bloom to post-bloom and/or
in the fall, depending on the herbicide used.
2. Road rights-of-way and other non-crop areas:
a. Option #1, Mechanical and Chemical: One (1) mowing cycle can be
carried out at the bud to early flower stage. An herbicide application can
be made during the bud stage, bloom to post-bloom and/or in the fall,
depending upon the herbicide used.
b. Option #2, Cultural and Chemical Control: Use of short residual
herbicides such as glyphosate and/or 2,4-D can be used in the early
summer during the bud stage. Seeding with perennial grasses from
those listed in Section 15-1-60.B.1 of this Code can then be carried out
later in the summer, at the appropriate time.
c. Option #3, Chemical Only: Herbicide applications can be made during
the bud stage, bloom to post-bloom and/or in the fall, depending upon the
herbicide used.
Sec. 15-1-70. Management of diffuse knapweed.
A. Diffuse knapweed is a non-native, biennial to short-lived perennial forb that reproduces
by seed. It spreads rapidly by the mature plant breaking off at ground level and being
blown with the wind, dispersing seed. It is a pioneer species that will quickly invade
disturbed, dry sites. Diffuse knapweed is found in the southwest part of the County
along rights-of-way, dry pasture sites and in gravelly riparian sites, such as along
Boulder Creek and the St. Vrain and South Platte Rivers.
B. Control measures.
1. Cultural control: Cultural control of diffuse knapweed is similar to Russian
knapweed in that seeding with perennial grasses such as smooth brome,
streambank wheatgrass, luna pubescent wheatgrass, western wheatgrass,
Sherman big bluegrass or Bozoisky Russian wild rye will help to compete with
diffuse knapweed and slow its spread. Seeding alone in infested sites will not,
however, control the existing stand.
2. Mechanical control: Mowing diffuse knapweed when it is in the bud stage and
again when it is flowering can significantly reduce seed production. Keeping
diffuse knapweed from going to seed over a number of years can eventually
eliminate an infestation, once the seed source in the soil is depleted.
3. Biological control: Two (2) species of picture-winged flies, Urophora affinis and
U. quadrifasciata, have demonstrated the ability to reduce the seed production of
diffuse and spotted knapweed. The flies lay eggs on the developing seed heads.
As a result of the larvae feeding on the flowering heads, the plants produce galls
which reduces seed production. The Colorado insectory is currently rearing
these two (2) flies and has made releases in the State the last several years.
4. Chemical control: There are a few herbicides labeled for use on diffuse
knapweed. Those that can be used independently or in combination with each
other are: picloram (Tordon®); dicamba (Clarity®); glyphosate (Roundup®); 2,4-
D (many different formulations); clopyralid and 2,4-D (Curtail®); clopyralid and
triblopyr (Redeem R&P(D) and any other EPA-approved chemical labeled for use
on diffuse knapweed.
C. Integrated management options by site.
1. Pasture and riparian areas:
a. Option #1, Cultural and Chemical Control: An herbicide application can
be made in early summer when diffuse knapweed is in the rosette
through bolting stage. Reseeding with competitive perennial grasses
from those listed in Section 15-1-70.B.1 of this Chapter can follow later in
the summer, depending upon the herbicide used and rate of application.
b. Option #2, Biological and Chemical Control: The release of insects such
as Urophora affinis and U. quadrifasciata can be made. An herbicide
treatment can then be made from the rosette through bolting stages and
in the fall where insects were not released. The use of herbicides at
different times of the growing season can be instituted as additional IPM
research is conducted and recommendations are developed.
c. Option #3, Mechanical and Chemical Control: Mowing can be carried out
when diffuse knapweed is in the bud stage and again at flowering. An
herbicide application can then be made to any plants that have re-bolted,
if necessary.
d. Option #4, Mechanical Control Only: Mowing can be carried out
throughout the season which will reduce seed set.
e. Option #5, Chemical Control Only: Herbicide application can be made
during the rosette stage, spring or fall, and while bolting.
2. Rights-of-way and other non-crop areas:
a. Option #1, Cultural and Chemical Control: Same as for Option #1 in
pasture and riparian areas.
b. Option #2, Mechanical and Chemical Control: One (1) mowing operation
can be carried out when diffuse knapweed is in the bud stage. If
necessary, an herbicide application can be made to plants that have re-
bolted.
c. Option #3, Mechanical Control Only: Same as for Option #4 in pasture
and riparian areas.
d. Option #4, Chemical Control Only: Same as for Option #5 in pasture and
riparian areas.
Sec. 15-1-80. Management of spotted knapweed.
A. Spotted knapweed is a non-native, perennial forb that reproduces by seed. It is a highly
competitive plant in rangeland sites that will exclude most grasses and forbs with time.
There are currently no known spotted knapweed infestations in the County.
B. Control measures.
1. Cultural control: Cultural control of spotted knapweed is similar to such control
of Russian and diffuse knapweed in that seeding with perennial grasses such as
smooth brome, streambank wheatgrass, luna pubescent wheatgrass, western
wheatgrass, Sherman big bluegrass or Bozoisky Russian wild rye will help to
compete with spotted knapweed and slow its spread. Seeding infested sites will
not, however, control the existing stand. In range and pasture conditions, good
grazing management practices will help to reduce the spread of the knapweeds
in general.
2. Mechanical control: Mechanical control of spotted knapweed could be carried
out throughout the summer with repeated mowing every fourteen (14) to twenty-
one (21) days. This would at least keep spotted knapweed from going to seed.
Whether this control technique will reduce the root mass and subsequently
reduce an existing stand is not known.
3. Biological control: The same as what was developed under biological control for
diffuse knapweed.
4. Chemical control: There are a few herbicides labeled for use on spotted
knapweed. Those that can be used independently or in combination with each
other are: picloram (Tordon®); dicamba (Clarity®); 2,4-D (many different
formulations); and clopyralid and 2,4-D (Curtail®); clopyralid and triclopyr
(Redeem R&P®).
Sec. 15-1-90. Management of Canada thistle.
A. Canada thistle is an aggressive, creeping perennial that reproduces by seed and
vegetative buds in the root system. It is a difficult plant to control because of its
extensive root system. Vertical roots may grow six (6) to fifteen (15) feet deep and
horizontal roots may extend fifteen (15) feet or more. Canada thistle is the most
widespread noxious weed in the County. It can be found in most habitat types, including
pastures, riparian sites (along waterways such as the Poudre, South Platte, St. Vrain
and Big Thompson Rivers), irrigation ditches, along roadside rights-of-way and in the
various crop and non-cropland sites.
B. Control measures.
1. Cultural control: Plant competition from various grasses and from alfalfa can be
an effective management tool. Early emerging grass species such as smooth
brome, streambank wheatgrass, luna pubescent wheatgrass, western
wheatgrass, Sherman big bluegrass or Bozoisky Russian wild rye can be used to
compete with Canada thistle and slow the spread and establishment of new
infestations. Competition alone, however, is seldom effective on Canada thistle.
2. Mechanical control: Mechanical control of Canada thistle could be carried out
throughout the summer with repeated mowing every fourteen (14) days. This
method keeps Canada thistle from going to seed; however, mowing has shown
to stimulate new shoot growth from roots. Consequently, mowing alone may
increase shoot density in an established stand. Whether consistent mowing for
consecutive years (two [2] to three [3] years) will reduce the root mass and
subsequently reduce an existing stand is unknown.
3. Biological control: There is one (1) insect species, a weevil, called Ceutorynchus
litura, that is currently being used as a biological control agent on Canada thistle
in the State. The female lays eggs on the underside of the leaves in early spring
and then the larvae bore into the main leaf vein and migrate down to the crown
of the plant. The holes created by the larvae open up Canada thistle to
secondary infection. Where high numbers of the larvae occur, death of Canada
thistle can occur.
4. Chemical control: There are a number of herbicides labeled for use on Canada
thistle, depending upon where the thistle is found. The herbicides that can be
used independently or in combination with other compounds are: picloram
(Tordon®); dicamba (Clarity®); 2,4-D (many different formulations); chlorsulfuron
(Telar®); clopyralid and 2,4-D (Curtail®);clopyralid and triclopyr (Redeem
R&P®); glyphosate (Roundup®, Rodeo®); and any other EPA-approved
chemicals labeled for use on Canada thistle.
C. Integrated management options by site.
1. Range, pasture and riparian sites:
a. Option #1, Biological and Chemical: Release of the insect Ceutorynchus
litura can be made during the early summer. An herbicide application
can then be made at the bud stage and in the fall where insects were not
released. Use of herbicides at different times of the growing season can
be instituted as additional IPM research is coordinated and
recommendations are developed.
b. Option #2, Mechanical and Chemical: Mowing can be carried out
throughout the season with the first mowing cycle at the bud stage.
Mowing should stop during late August, followed by a herbicide treatment
during late September through October, before a hard freeze.
c. Option #3, Cultural and Chemical Control: An herbicide application, using
short residual herbicides such as glyphosate and/or 2,4-D, can be made,
followed by reseeding with a competitive grass from those listed in
Section 15-1-60.B.1 of this Chapter. In addition, fertilization or irrigation
could be instituted to stimulate and increased grass growth.
d. Option #4, Chemical Control Only: Herbicide applications can be made
to Canada thistle from rosette to the bud stage, and/or in the fall,
depending upon the herbicide used.
2. Road rights-of-way and other non-crop areas.
a. Option #1, Mechanical and Chemical: One (1) mowing cycle can be
carried out at the bud to early flower stage. An herbicide application can
be made from rosette to bud stage and/or in the fall, depending upon the
herbicide used.
b. Option #2, Cultural and Chemical Control: An herbicide application can
be made in early summer when Canada thistle is in the rosette through
bud stage. Reseeding with competitive perennial grasses from those
listed in Section 15-1-60.B.1 of this Chapter can follow later in the
summer, depending upon the herbicide used and rate of application.
c. Option #3, Chemical Control Only: Herbicide applications can be made
from rosette to bud stage and/or in the fall, depending upon the herbicide
used.
3. Cropland sites. Canada thistle is found in almost every crop grown in the
County. Prescription weed management measures developed by Colorado State
University weed scientists and the County Extension Agronomist will be used.
Sec. 15-1-100. Management of musk thistle.
A. Musk thistle is a biennial plant that reproduces only by seed. Rosettes (clump of leaves
on the ground) are formed during the first year of growth, and the plant bolts and sets
seed the second year. It is a prolific seed producer, with a single plant producing up to
twenty thousand (20,000) seeds. Musk thistle is found primarily in pastures and riparian
sites (along waterways such as the South Platte, St. Vrain, Big Thompson and Little
Thompson rivers and Boulder Creek) and along irrigation ditches, roadside rights-of-way
and other noncrop areas.
B. Control measures.
1. Cultural control: Maintaining pastures and riparian sites in good condition is the
primary method of culturally managing musk thistle. Promoting good grass
growth by proper grazing management and fertilizing according to soil testing
recommendations will prevent establishment of musk thistle.
2. Mechanical control: Musk thistle can be effectively controlled mechanically.
Severing the roots below ground with a shovel or hoe or mowing musk thistle
every time it reaches bud stage will reduce, if not eliminate, seed production. If
mowing occurs during flower stage, the thistle should be gathered and burned to
destroy any seed that has developed.
3. Biological control:
a. Two (2) species of weevils, Rhinocyllus conicus (seed head weevil) and
Trichosirocalus horridus, attack two (2) different sites of musk thistle.
The seed head weevil, as its name implies, attacks the seeds of musk
thistle. Eggs are laid by the female on the back of developing flowers
and then the larvae bore into the flower, destroying the developing seed.
The seed head weevil can reduce seed production by as much as fifty
percent (50%). Use of this weevil as the sole means of controlling musk
thistle is not very effective.
b. Trichosirocalus horridus attacks the crown area of musk thistle rosettes,
killing or weakening the plant before it bolts. Use of both weevil species
together may prove to be an effective biological control program.
4. Chemical control: There are a number of herbicides labeled for use on musk
thistle, depending upon where the thistle is found. The herbicides that can be
used independently or in combination with other compounds are: picloram
(Tordon®); dicamba (Clarity®); 2,4-D (many different formulations); chlorsulfuron
(Telar®); clopyralid and 2,4-D (Curtail(D); clopyralid and triclopyr (Redeem
R&P )); glyphosate (Roundup®, Rodeo®); metsulfuron (Escort(D); and any other
EPA-approved chemical labeled for use on musk thistle.
C. Integrated management options by site.
1. Pasture and riparian sites:
a. Option #1, Biological and Chemical: Release of Trichosirocalus horridus
can be made at the appropriate time of the summer. Rhinocyllus conicus
is well established in the County and should already be infesting the
stand. An herbicide application can then be made to musk thistle at the
flower stage. Telar or Escort should be used when treating musk thistle
in the flower stage. Herbicide applications should only be carried out in
the flower stage in order to allow the seed head weevil to complete its life
cycle. Use of herbicides to rosettes in the spring or fall should not be
carried out where Trichosirocalus horridus was released. Use of
herbicides at different times of the growing season can be instituted as
additional IPM research is conducted and recommendations are
developed.
b. Option #2, Mechanical and Chemical Control: Mowing can be carried out
throughout the summer when musk thistle is in the bud stage. An
herbicide application can then be made in October to the fall rosettes and
any bolted plants.
c. Option #3, Mechanical Control Only: Multiple mowings (two [2] to four
[4]) can be carried out throughout the summer when musk thistle is in the
bud stage, keeping it from producing seed. If mowing occurs mid-to-late
flower stage, the thistle should be gathered and burned to destroy any
seed that has developed.
d. Option #4, Chemical Control Only: Herbicides can be used in the spring
and fall when the plant is in the rosette stage. Only the herbicides
labeled for the site intended will be used.
2. Road rights-of-way and other non-crop areas:
a. Option #1, Mechanical and Chemical Control: One (1) mowing pass can
be made when musk thistle is in the bud stage. An herbicide application
can be made in the fall to the rosettes and re-bolted plants.
b. Option #2, Chemical Control Only: Herbicides can be used in the spring
and the fall when the plant is in the rosette stage. Only the herbicides
labeled for the site intended will be used.
Sec. 15-1-110. Management of Scotch thistle.
A. Scotch thistle is a biennial plant that reproduces only by seed. Rosettes are formed
during the first year of growth and the plants bolt and set seeds the second year. The
leaves are densely covered with hair, giving the plant a grayish-green color. Scotch
thistle is primarily found in pastures and riparian sites (South Platte River and Saint
Vrain Rivers) and along roadside rights-of-way and other noncrop areas in southern
Weld County.
B. Control measures:
1. Cultural control: Maintaining pastures and riparian sites in good condition is the
primary method of culturally managing Scotch thistle. Promoting good grass
growth by proper grazing management and fertilizing according to soil testing
recommendations will help prevent establishment of Scotch thistle.
2. Mechanical control: Scotch thistle can be efficiently controlled mechanically.
Severing the roots below ground with a shovel or hoe or mowing Scotch thistle
every time it reaches bud stage will reduce, if not eliminate, seed production. If
mowing occurs during flower stage, the thistle should be gathered and burned to
destroy any seed that has developed.
3. Biological control: No biological control agents are available for Scotch thistle.
One (1)weevil species, Rhinocyllus conicus, will move from musk thistle to
Scotch thistle; however, effective control of Scotch thistle has not been
demonstrated.
4. Chemical control: There are a number of herbicides labeled for use on Scotch
thistle, depending upon where the thistle is found. The herbicides that can be
used independently or in combination with other compounds are: picloram
(Tordon®); dicamba (Clarity®); 2,4-D (many different formulations); chlorsulfuron
(Telar®); metsulfuron (Escort®); clopyralid and 2,4-D (Curtail®); clopyralid and
triclopyr (Redeem R&P®); glyphosate (Roundup®, Rodeo®); and any other
EPA-approved chemical labeled for use on Scotch thistle.
C. Integrated management options by site.
1. Pastures and riparian sites:
a. Option #1, Mechanical and Chemical Control: Multiple mowings (two [2]
to four[4]) can be carried out throughout the summer when Scotch thistle
is in the bud stage, keeping it from producing seed. An herbicide
application can then be made in October to the fall rosettes and any
bolted plants.
b. Option #2, Mechanical Control Only: Multiple mowings (two [2] to four
[4]) can be carried out throughout the summer when Scotch thistle is in
the bud stage, keeping it from producing seed. If mowing occurs during
flower stage, the thistle should be gathered and burned to destroy any
seed that has developed.
c. Option #3, Chemical Control Only: Herbicides can be used in the spring
and fall when the plant is in the rosette stage. Only the herbicides
labeled for the site intended will be used.
2. Road rights-of-way and other non-crop areas:
a. Option #1, Mechanical and Chemical Control: One (1) mowing pass can
be made when Scotch thistle is in the bud stage. An herbicide
application can be made to rebolted plants in the bud stage and/or to fall
regrowth.
b. Option #2, Chemical Control: Herbicides can be used in the spring and
the fall when the plant is in the rosette stage. Only the herbicides labeled
for the site intended will be used.
Sec. 15-1-120. Management of field bindweed.
A. Field bindweed is a deep-rooted creeping perennial plant that reproduces by seed and
horizontal roots. Bindweed seed can survive in soil up to forty (40) years; therefore, it is
important that bindweed be kept from going to seed. Field bindweed is found
throughout the County in most habitat types, including rangeland, pastures, along
roadside rights-of-way and in various crop and non-cropland sites.
B. Control measures.
1. Cultural control: Seeding perennial grasses can be an effective management
tool in providing plant competition against bindweed. Selecting the proper native
grass and/or improved cultivar grass seed mix for a site specific location is
important. For site specific reseeding recommendations, the Natural Resource
Conservation Service and the CSU Extension Office can be contacted.
2. Mechanical control: Mowing is not effective due to the creeping nature of
bindweed.
3. Biological control: There are currently no biological control agents on field
bindweed that are cleared for release in the United States; however, research is
in process. Grazing with livestock (cattle or sheep), with proper stocking rates,
can be an effective means of keeping bindweed from going to seed in range and
pasture sites.
4. Chemical control: There are a number of herbicides labeled for use on field
bindweed, depending upon where the bindweed is found. The herbicides that
can be used independently or in combination with other compounds are:
picloram (Tordon®); dicamba (Clarity®); 2,4-D (many different formulations);
glyphosate (Roundup®, Rodeo®); quinclorac (Paramount®); and any other EPA-
approved chemicals labeled for use on field bindweed.
C. Integrated management options by site.
1. Range and pastureland:
a. Option #1, Cultural and Chemical Control: An herbicide application using
short residual herbicides such as glyphosate and/or 2,4-D can be made,
followed by reseeding in the fall with a competitive sod-forming grass mix.
In addition, fertilization according to soil tests or irrigation could be
instituted to stimulate grass growth.
b. Option #2, Biological Control only: Grazing with cattle and sheep
throughout the summer and fall will keep field bindweed from going to
seed and may reduce the underground root reserve.
c. Option #3, Biological and Chemical Control: Grazing with cattle or sheep
from May through early September, followed by an herbicide treatment in
late September or early October.
d. Option #4, Chemical Control Only: Herbicides can be used during the
flower stage, typically in June and July, and in the fall just before a hard
freeze. Only the herbicides labeled for the site intended will be used.
2. Road rights-of-way and other non-crop areas:
a. Option #1, Cultural and Chemical Control: An herbicide application using
short residual herbicides, such as glyphosate and/or 2,4-D, can be made,
followed by reseeding in the fall with a competitive sod-forming grass mix.
b. Option #2, Chemical Control Only: Herbicides can be used during the
flower stage, typically in June and July, and in the fall just before a hard
freeze. Only the herbicides labeled for roadsides and other non-cropland
areas will be used.
3. Cropland sites: Field bindweed is found in almost every crop grown in the
County. Prescription weed management measures developed by Colorado State
University weed scientists and the County Extension Agronomist can be used.
Sec. 15-1-125. Management of Dalmatian Toadflax.
A. Dalmatian Toadflax is a deep-rooted perennial that reproduces by seed and creeping
roots. It has waxy, heart-shaped leaves that clasp the stem. The flowers are
snapdragon-shaped, bright yellow and have an orange center. Dalmatian Toadflax is
found from 5,000-8,000 feet in dry rangeland sites, roadsides, fence lines, farmland and
pastures. It is found in northwest Weld County along rights-of-way and in range and
pasture sites.
1. Control Measures
a. Cultural Control: Maintaining healthy sod-forming range and pastures and
planting sod-forming perennial grasses such as Luna pubescent
wheatgrass, streambank wheatgrass, Bozoisky Russian wild rye and
western wheatgrass have been shown to be effective in reducing the spread
of Dalmatian Toadflax. Seeding alone in infested sites will not, however,
control the existing stand.
b. Mechanical Control: Mechanical control of Dalmatian Toadflax can be
carried out throughout the summer with repeated mowing every 14-21 days.
This would at least keep dalmatian toadflax from going to seed. Whether
this control technique will reduce the root mass and subsequently reduce an
existing stand is uncertain.
c. Biological Control: Grazing with livestock (sheep or goats), with proper
stocking rates, can be an effective means of keeping dalmatian toadflax
from going to seed in range and pasture sites.
Six species of insects feed on dalmatian toadflax and have been released
in the United States and Canada. They are: a defoliating moth (Caliphasia
lunula), an ovary feeding beetle (Brachypteralis pulicarius), two seed
capsule feeding weevils (Gymnaetron antirhinni and G. netum), a stem
boring weevil (Mecinus janthinus), and a root boring moth (Eteobale
intermediella). The Colorado Insectory is currently rearing Caliphasia lunula
and it may be available for release on Dalmatian Toadflax. The use of
multiple bio-control species to effectively manage Dalmatian Toadflax has
yet to be demonstrated.
d. Chemical Control: There are only a few herbicides labeled for use on
Dalmatian Toadflax that are effective in controlling it. The herbicides that
can be used independently or in combination with other herbicides are:
picloram(Tordon®);dicamba(Clarity®);2,4-D(many different formulations);
and glyphosate (Roundup®, Rodeo®).
C. Integrated Management Options by Site
1. Range and Pasture Sites:
a. Option#1 Cultural and Chemical Control:A herbicide application using short
residual herbicides such as glyphosate and/or 2,4-D can be made followed
by reseeding in fall with a competitive sod forming mix of grass as listed
above (1.a. Cultural Control). In addition, fertilization according to soil tests
or irrigation could be instituted to stimulate increased grass growth.
b. Option #2 Biological and Chemical Control: Grazing with sheep or goats
from May throughout early September can be carried out, followed by a
herbicide treatment in October.
c. Option #3 Mechanical and Chemical Control: Mowing can be carried out
throughout the summer when Dalmatian Toadflax is in the bud stage. A
herbicide application can be made in October to any bolted plants.
2. Road Rights-of-Way and Other Non-crop Areas
a. Option #1 Mechanical and Chemical Control: One mowing cycle can be
carried out at the bud stage. A herbicide application should be made at the
flower stage or to any plants that have rebolted in the fall.
b. Option #2 Chemical Control Only: Herbicides can be used in the spring or
early summer during the flower stage and in the fall just before a hard
freeze. Only the herbicides labeled for use on roadsides and other non-
cropland areas will be used.
Sec. 15-1-130. Prevention measures.
A. Preventive control means using measures which will stop or forestall weeds from
contaminating an area. Establishing preventive measures are often the most practical and
cost-effective means of weed control.
B. The preventive measures which seem most practical for the County are as follows:
1. Use of weed-free seed and mulch for reclamation of disturbed sites;
2. Promote the Colorado Weed Free Hay and Forage program;
3. Prioritize weed management areas along routes of dispersal; and
4. Identify noxious weed species infesting counties bordering Weld County.
C. Weed-free seed and mulch standards.
1. Where the ground is disturbed by activities, such as road preparation for road
resurfacing, sand and gravel lot operations, oil and gas well operations, and laying
underground utility lines, weeds will be the first plants to colonize or revegetate the
site. It is important that these sites be reclaimed so that noxious weeds do not
become established.
2. The County will use weed-free seed and mulch on all County operations concerned
with the reclamation of disturbed sites,such as on roadside resurfacing projects and
sand and gravel lot operations. Additional regulations may be considered for
private operations being carried out on public land.
D. Weed-free hay and forage program.
1. Standards have been developed that enable growers to have their hay and forage
certified as noxious weed-free. These standards will encourage growers to produce
noxious weed-free hay and forage so that it can be shipped and used anywhere in
the U.S. (particularly where noxious weed-free standards currently exist).
2. The County Vegetation Management Specialist will promote the Colorado Weed
Free Forage Standards through the use of seminars, radio spots and newspaper
articles.
E. Management areas along routes of dispersal.
1. Weeds are spread rapidly through the dispersal of weed seeds in air and water.
Consequently, high weed seed dispersal areas are associated with rights-of-way,
such as along all roads and railroads and along waterways, i.e., along the Poudre,
South Platte, St. Vrain and Little Thompson Rivers and irrigation canals.
2. The Department of Public Works will carry out a noxious weed control program on
all County roads from May through October. The noxious weeds targeted for
control include: Canada, musk, and Scotch thistle; leafy spurge; Russian, diffuse
and spotted knapweed;field bindweed;and dalmatian toadflax. In addition,contact
will continue to be made with the Department of Transportation, all irrigation and
ditch companies in the County, the Union Pacific, Burlington Northern and Great
Western Railroad companies, and the oil and gas companies operating within the
County. Information regarding the Weld County Noxious Weed Management Plan
will be distributed and their cooperation will be encouraged. Assistance in helping
them develop their integrated weed management programs will be offered. In
working with landowners on private property, all lands bordering the rivers in the
County will be considered high priority areas. Landowner compliance with the
Noxious Weed Management Plan will be required.
F. Noxious weeds in bordering counties that do not occur in the County. Contact will continue
to be made with the weed control departments in the bordering counties to identify the
noxious weed species which occur in each county that would threaten the County. Plans
have been developed to monitor the borders of the County, as necessary.
Sec. 15-1-140. Educational programs. Education of the public is one (1) of the most
important components of a weed management program. Emphasis will be placed on continuing
a multifaceted educational program. The following programs have been instituted in the past and
will continue to be conducted every year:
A. Timely newspaper articles concerned with weed identification and management.
B. Timely radio broadcasts following the information in the newspaper articles.
C. Landowner weed management seminars and calibration workshops.
D. Educational booths at the Colorado Farm Show and other appropriate venues.
E. Distribute brochures and CSU fact sheets to individual landowners.
Sec. 15-1-150. Mapping.
A. An accurate baseline map of the existing noxious weed infestations on County rights-of-way
is extremely important for the ongoing evaluation of the effectiveness of the County Weed
Management Program. Therefore,a computerized mapping program has been established
and will be updated annually for the noxious weeds on County rights-of-way.
Sec. 15-1-160. Cooperative intergovernmental agreements.
A. Contact will be made with the following agencies concerning compliance with the Colorado
Noxious Weed Management Act:
1. Colorado Department of Transportation.
2. Colorado State Department of Parks and Recreation.
3. Colorado Division of Wildlife.
4. Colorado State Land Board.
5. U.S. Forest Service.
6. Other government entities.
B. Assistance will be offered in helping each agency develop integrated weed management
plans for their lands. Actual assistance in carrying out the weed control programs on their
properties will also be offered. Cooperative intergovernmental agreements can be
established if the County is asked to assist in implementing the weed control measures.
Sec. 15-1-170. Adopt-a-Roadside program.
A. An "Adopt-a-Roadside" program will be established which will give landowners the ability
to take the responsibility to manage the noxious weeds on the County rights-of-way that
border their property.
B. Landowners who are chemically sensitive or for some reason do not want chemicals
sprayed or mowing activities carried out along their property may take the responsibility for
managing the noxious weeds on the roadside rights-of-way. Landowner agreements with
specific requirements for compliance will be established.
Sec. 15-1-180. Enforcement on private and public property.
A. Cooperation from all landowners (private and state) will be encouraged through positive
communication by mail and through personal contact. When weed control measures are
not carried out by a landowner, enforcement measures may have to be instituted. All
procedures as established by this Chapter, the Colorado Noxious Weed Act, Section 35-
5.5-101, et seq., C.R.S., Weld County Code, and any and all federal, state and local
regulations will be followed, prior to any enforcement activities being carried out on private
or public property. Integrated weed management plans will be requested from certain
landowners,as determined by the County Vegetation Management Specialist and the Weld
County Noxious Weed Management Advisory Board.
B. Work priorities must be established due to the size of the County and the number of
landowners with existing noxious weed problems. The following list prioritizes where
enforcement activities will be carried out in ranking order of importance:
1. Lands bordering all waterways (rivers and irrigation ditches).
2. Complaint properties.
3. Landowners identified as negligent in the past.
4. Landowners with twenty percent (20%) or more of their property infested with
noxious weeds.
Sec. 15-1-190. Evaluation of program.
A. The goals and the plan of work established in Sections 15-1-30 through 15-1-180 of this
Article will be reviewed and evaluated at the end of every year. A written evaluation will be
prepared establishing additions or changes in the plan of work for the following year. Any
additions or changes must be recommended by the Noxious Weed Management Advisory
Board and approved by the Board of County Commissioners.
B. The County Noxious Weed Management Plan shall be reviewed and amended,as needed,
at least every three (3) years (Section 35-5.5-107(4)(a), C.R.S.).
ARTICLE II
Enforcement of Plan
Sec. 15-2-10. Authorized agent for enforcement.
Pursuant to Section 35-5.5-105(2), C.R.S., the County Vegetation Management Specialist, his
or her employees and agents, are hereby authorized to enforce the above-stated Noxious
Weed Management Plan in the unincorporated areas of the County, by utilizing those
procedures set forth in Sections 35-5-108, 35-5-109, 35-5.5-109, and 35-5.5-108, C.R.S., and
any other applicable state and federal statutes, rules, regulations and ordinances, including the
remaining provisions of this Chapter.
Sec. 15-2-20. Right of entry.
Prior to entering private lands for the purpose of enforcing the County Noxious Weed
Management Plan as set forth herein, the County Vegetation Management Specialist shall first
obtain a "right of entry" from the Board of County Commissioners, no less than ten (10) days
after a Notice to Control Identified Noxious Weeds has been sent to the owner or occupant of
the private lands and said owner or occupant has failed to comply with said notice.
Sec. 15-2-30. Mailing of assessments.
All assessments for the whole cost of any enforcement work performed by the County
Vegetation Management Specialist upon private lands, including up to twenty percent (20%) for
inspection and other incidental costs in connection therewith, shall be mailed to the landowner
or occupant by certified mail. Failure to receive said assessment shall not act as a defense to
said assessment.
Sec. 15-2-40. Failure to pay assessment.
Any assessment which is not paid within thirty-three (33) days after the date of mailing by
certified mail to the landowner or occupant of private lands upon which the County Vegetation
Management Specialist has performed enforcement work, shall constitute a lien against each
lot or tract of land until paid and may be certified by resolution of the Board of County
Commissioners to the County Treasurer to be collected in the same manner as provided for
collection of taxes upon private lands in accordance with Section 35-5.5-109(5)(a), C.R.S.
Sec. 15-2-50. Liability.
This Chapter shall not be intended to create a civil cause of action against the Board of County
Commissioners, or any other person that may administer this Chapter in any manner.
BE IT FURTHER ORDAINED by the Board that the Clerk to the Board be, and hereby is,
directed to arrange for Colorado Code Publishing to supplement the Weld County Code with
the amendments contained herein, to coincide with chapters, articles, divisions, sections, and
sub-sections as they currently exist within said Code; and to resolve any inconsistencies
regarding capitalization, grammar, and numbering or placement of chapters, articles, divisions,
sections, and sub-sections in said Code.
BE IT FURTHER ORDAINED by the Board if any section, subsection, paragraph, sentence,
clause, or phrase of this Ordinance is for any reason held or decided to be unconstitutional,
such decision shall not affect the validity of the remaining portions hereof. The Board of County
Commissioners hereby declares that it would have enacted this Ordinance in each and every
section, subsection, paragraph, sentence, clause, and phrase thereof irrespective of the fact
that any one or more sections, subsections, paragraphs, sentences, clauses, or phrases might
be declared to be unconstitutional or invalid.
NOTICE
PURSUANT to the Weld County Code, Ordinance Number 2001-2 published above, was
introduced and, on motion duly made and seconded, approved upon first reading on March 14,
2001. A public hearing and second reading is scheduled to be held in the Chambers of the
Board, First Floor Hearing Room, 915 10th Street, Greeley, Colorado 80631, on April 9, 2001.
All persons in any manner interested in the reading of said Ordinance are requested to attend
and may be heard.
Please contact the Clerk to the Board's office at phone (970) 356-4000, Extension 4226, or fax
(970) 352-0242, prior to the day of the hearing if, as the result of a disability, you require
reasonable accommodations in order to participate in this hearing.
Any backup material, exhibits or information previously submitted to the Board of County
Commissioners concerning this matter may be examined in the office of the Clerk to the Board
of County Commissioners, located in the Weld County Centennial Center, Third Floor, 915 10th
Street, Greeley, Colorado, between the hours of 8:00 a.m. and 5:00 p.m., Monday thru Friday,
or may be accessed through the Weld County Web Page (www.co.weld.co.us). E-Mail
messages sent to an individual Commissioner may not be included in the case file. To ensure
inclusion of your E-Mail correspondence into the case file, please send a copy to
charding@co.weld.co.us.
SECOND READING: April 9, 2001, at 9:00 a.m.
THIRD READING: April 30, 2001, at 9:00 a.m.
BOARD OF COUNTY COMMISSIONERS
WELD COUNTY, COLORADO
DATED: March 16, 2001
PUBLISHED: March 21, 2001, in the Tri-Town Farmer and Miner
Affidavit of Publication
STATE OF COLORADO
County of Weld SS.
I A. Winkler Riesel of said County of Weld being
duly sworn,say that I am publisher of
FARMER&MINER
that the same is a weekly newspaper of general
circulation was printed and published in the town of
FREDERICK
in said county and state that the notice of
advertisement,of which the annexed is a true copy has
been published in said weekly newspaper for
ONE consecutive weeks: that the notice was
published in the regular and entire issue of every
number of said newspaper during the period and time
of publication of said notice and in the newspaper
proper and not in a supplement thereof: that the first
publication of said notice was contained in the issue of
said newspaper bearing the date of
MARCH 21 A.D. 2001 and the last publication
thereof,in the issue of said newspaper,bearing date,
the 21st day of MARCH 2001 that the said
FARMER &MINER
has been published continuously and uninterruptedly
during the period of at least fifty-two consecutive
weeks next prior to the first issue thereof containing
said notice or advertisement above referred to: and
that said newspaper was at the time of each of the
publications of said notice duly qualified for that
purpose within the meaning of an act entitled. "An
Act Concerning Legal Notices, Advertisements and
Publications and the Fees of Printers and Publishers
thereof,and to Repeal all Acts and Parts of Acts in
Conflict with the Provisions of this Act" approved
April 7, 1921, and all amendments thereof, and
particularly as amended by an act approved, March
30,1923,and an act approved May 13,1931.
Subscribed and sworn to before me this j1.g.day of
SSA
Notary Publi
FT.LUPTON. CO 80621
okDacoi -a
adopt a Noxious Weed of Parks and Rricreallon, options Need below we bvfe*pnevuekV seed
MSWIIMMOollien
WELD COUNTY Management Plan for all Colorado Land Board, meant to provide various tthgvA 4s seed
CODE ORDINANCE 2001-2 lands within its iunsdicilonal Division of Wildlife and U.S, monagNrWdtechniques
tor en
boundaries. Forest Service. Help them controlling the noxious the plant and make 0 mare
RETIE MATTER OF REPEATING *sc 15-1-20. developweednanagement weeds in the various susceptible to other control
AND REENACTING, WITH Weed species to be plans and, where environmental sites they cue methods, particularly
AMENDMENTS.CHAPTER 15 cppnolet appropriate, enter into found. By no means are Ott chemical control.
VEGETATION, OF THE WELD A Pursuant tc the Act, coop era t i v e the management options 4. Chemical control:
COUNTY CODE WedCounty has(armed the intergovernmental mentioned. Additional There are a number of
Weld County Noxious Weed agreements. combinations of hebicideslabeedlaumon
BE IT ORDAINED BY THE Management Advisory 5. Continue to shore management techniques leafy spurge.Those Rsatcon
BOARD OF- -OOFTITY Board to develop and weed control costs with are possible which may be be used independently or in
COMMISSIONERS OF THE recommend a Noxious landowners as funds are submitted by private combinalionwitheachalMf
COUNTY OF WELD,STATE OF Weed Management Plan available through current landowners. The Integrated are: piclorom (Tondos*);
COLORADO: and to review said Plan at state grants designated for weed management plans dicamba (Clarity*);
least every three(3)years. such purpose. Additional submitted by individual imazapic (Plateau*); 2,4D
WHEREAS, the Board o/ There are nine (9) weed funds may be sought to landownerswilbeevajuated (many different
County Ceionersof the species that are designated continue offering the same by the County Vegetation formulations); glyphosale
&t Weld.
County of Weld. State of for management in Weld orsimdbrcosbaharepnxgram Ma gement ecialt.Ifa (Roundup®
RRo nindupKreaffelD)oedaf and ;
Colorado. pursuant to County.as follows. as may be appropriate. dispute regardinga
Colorado statute and the 6. Develop mafagementpianarues,the other EPA-approved
Weld County Home Rule Leafy Spurge (Euphorbio intergovernmental landowner or occupant may chemicalslabeledoruseea
Crater, s vested with the eta) agreements with request anabitratbn panel leafy spurge.
authontyof administering the Canada Thistle (Cirsium communitiesthroughoUt the to determine the final C. I n t e g5r a to
affairs of Weld County. orvense) County for weed management plan lan(Section gem W
Colorado.and Muskihistle(Carduusnutans) management along rural 35-5.5-109(4)(Mi,C.R,5.). 1. Range. pasture and
Field sndweed(Convellvolus road rights-of-way. Sec.15-1-50. riparian sites:
WHEREAS, the Board of arvenes) 7. Have established IN) Management of leafy a.Option 51,Biological and
County Commissioners, on Russian Knapweed - 200 biological control spurge. Chemical Control: Gaming
December 28, 2000. (Actoptilon repens) release sites throughout the A. Leafy spurge is a with sheep or goats from
adopted WeldCountyCode County in cooperation with deep-rootedperennkilplant early April through
Ordinance 2UU5Fl,enacting Scotch Thistle(Onopordum the Colorado Deportment of that spreads by seeds and August or early Sep
a comprehensive Code for ocenthium) Agriculture and private creeping roots. It has a vast followed by a herbicide
the County of Weld, landowners. underground root system treatment in late SepferrLLser,
including the codification of Diffuse Knapweed 8. By2003,havereduced which makes it difficult to or early October. S
all previously adopted (Centaurea diffuse) the noxious weed acreage control with any one (I) b.Option 42,Biologicaland
ordinances of ageneral and sprayedonCountyrtghts-of- control technique. Leafy Chemical Control: The
permanent nature enacted Spotted Knapweed way by ten percent(10%)to spurge is found primarily in release ofinseah as
or before said sate ofMva,
on ador on, (Centaurea maculoso) fifteen percent(15%). riparian sites (along Apnaarl
C. Long-term goals waterways such as the A.lacerlaw,
A.cyperkslas,
WHEREAS,the Weld County Dalmatian Toodflax(Linaria (January 200510 December Poudren and South nNandatte apexes coio nducive a, and other
dalmatian) 2007). area can be made. A
Code is in need n it revision rea 9 1. Have reduced the along irrigation ditches,
to procedures.
s. terms, and Of the weed species listed noxious weed acreage range and pastures, hethimade ide treatment bower
be
procedures. terms, and above.Canada thistle,field sprayed onCounty rights-of- roadsides and other non- made during the true Rower
requirement therein bindweed, testy spurge, way by thirty percent(30%) cropland sites. stage and in the fall at snot
musk where insects were not
NOW, THEREFORE, BE IT RuStiondscotchthisiles,and to forty percent(40%). B. Control measures. released.
RWst acreage
in the o the 2. 1, Cultural control: c. Option *3. Mechanical
CORDAINED aunyCom the Board of most ppoeoge in the County Haveeonbdedandworked Seeding perennial grasses
County of Weld, Statetheof eco pose the greatest with most landowners onciforbscanbean feEave and Chemical Conhol:
Colora o a State of economic and Countywide who have a management tool. Early Mowing con be carried out
Colorado, that certain environmental threat to the noxious weed infestation. emerging plant species that througt out mowing
season with
Cun ore be. Weld Cur,r,ty DioNse knapweed 3. utilize early season moisture the fistge. Mocydedlhe
County Code ae, and iscurrently ocallzedtoafew Hove established 400-500 such as smooth brume, bud stage. late Auould
gust
hereby are, repealed and drainages and rights-of-way biological control release streambank twhealwheatgrass, stop during late August
amendments,enacted, we in the southwest part of the Bites in Me County. lune
extern sceniwheatgrass, followed by a hebleae
nChaoand the iCountys appearing
Dalmahenorthwax Sec.15-1-40. western wl eatgsass, treatment during late
oreas Chapters arerevised isart of thng in the northwest Planolworkimplementalioof Sherman big bluegrass or September or early October
to read as follows. part the County. A. Description of Bozoisky Russian wild rye (before a hard freeze).
Sec.15-1-30.Objectivesand integrated weed have reduced leafy spurge d. Option *4, Biological or
CHAPTER 15 - maragesllent techniques. density and limited the Mechanical Control Only:
VEGETATION A.Statement of The weed species spreadand establishment of The used sheep or goatsor
ARTICLE I object ves. The objectives designated as noxious and new infestation. Sequential mowing should be sited al
of the lecdy spume
Noxious Weed Management Works Department
respect to weed are lissttetlnSection 1ted for 5120.A fment ollowed by a seeding of the from going typhosate applications season to o speed.Whether
management in the County of this Chapter. Integrated above species has shown to this method will keep the
Sec.15-1-10. am/outbid: weed management bevery effective inreducing existing infestation from
DescepCo of Act. I. Develop andcarry out methods are to be used in an existing stand of leafy spreading by underground
A.The Colorado Noxious a comprehensive noxious managing these weed spurge. root growth is uncertain.
Weed Management Act weed control programon all specieslsection 35-5.5-107, 2. Mechanical control: e. Option s5, Chemical
Section 35-5 -10I, et seq., County rights-of-way and C.R.5.). Integrated Mechanical control of leafy Control Only: Herbicides
C RS,(hereinafterter "the Act") other County property,such management techniques spurge is difficult at best; should be used inthe spring,
states that 0thre noxious as in sand and gravel mining include educatidn; however,repeated mowing early summerduringthehue
weeds pose o threat to the operations,grader shed lots preventive measures; and everyfourteen(14)tofwenM flower stage and in the fallcontinued economic antl and open space areas. control measures including one(21)daysthrougrodthe just before a hard freeze.
environmental value of the 2. Establish an cultural. mechanical, summer, starting before Only the herbicides labeled
land in Colorado and that educational program, by biological and chemical flowering stage,will at least for the site intended w*be
they must be managed n the Sttby
o using mailings and holding control. For the purposes of keep the plants from going used.
all landowners in the State educational and<alibralion this plan, the following to seed and may'educe the 2. Along irrigation
The Act states that local seminars,that willeffectively definitions for the control underground root reserve; ditches:
governments (cities and communicate weed measures w0 be used. however,mowinghasshown a. Chemical Control:
counties) are directed to management Informationto fostimulatenewshootgrowth Herbicides can be used in
take the necessary steps to the landowners in the Biologicalcontrolmeansthe from roots. Consequently, the spring, early summer
manage the noxious weeds County use of organisms such as mowingolone may increase during the hue flower stage,
in their respective 3. ldentifyuninformedor sheep,goats,cattle,Insects shoot density in an and in the fall just before a
lunsdictions.They are further negligent landowners who andplantdiseasestodisrupt established stand. Whether hard freeze. Only the
directed to appoint an are not carrying out weed the growth of undesirable consistent mowing for leisia a ske
advisory commission whose management programs on plants, consecutive years (two to intended
will be used.
responsibilities are threefold'. mist property and provide three years)will reduce the 3. Road rights-of-way
1 technical support for Chemicalconhd means the rat mass and subsequently and other non-crop areas:
Develop recommended establishing weed use of herbicides or plant reduce an existing stand is a.Option ill, Mechanical
management criteria and management pions or growth regulators to disrupt unknown. Research results andChemicalCoital:One
integrated weed enforce on properties, If the growth of undesirable are notavailable to indicate (1) mowing cycle can be
management plans for neeessafYr plants, whether stand reduction or canledaulatthebutlaeoisv
ma
naging the designated 4. Workwlthall state and eradication could be flower stage. A herbicide
noxious wends. federal agencies, through Culturalcoaholmeansthose achieved through use of this application stouldbemade
2. intergovernmental methodologies or technique. at the true flower stage.
Recommend the addition. agreements, 11 necessary, management practices 3. Biological conhol: b.Option 52, Chemical
necessary.of noxious weeds towards establishing conducted to favor the a.Grazing with sheep one Coakd Only:Habkaeacan
that shall be gemen to effective weed growth of desirable plants goats throughout the spring, be used in nrespringar eoey
integrated management. management programs on over undesirable plants, summer and fall will keep sunvsereurk tr gt ewlbwer
3. their property. including.but not limited to, leafy spurge from going to stage and in the loll just
Recommend to theners Boardof B. Short-term goals maintaining an optimum seed and may reduce the before a hard freeze. Only
County names f those landowners andors the (January 2000 to December fertility and plant moisture underground root reserve. thehelbicideslabe5Slaruse
of those 2004) status in smarms,planting at This practice may also en roadsides and anmrna-
who shall be required to 1 Annually update the opitmumdensity and spatial weaken the plants to make cropland areaswebe used.
submit integrated weed mop of me county roes for arrangement a d
ngementlnanarea,an0 them more susceptible to Sec.15-1-60.Magemre
management pino fur noxious weed infestations. plantingspeciesmost suited chemical control. Russian knapweed.
managing the noxious 2. Continue to establish to on area. b.Severalinsectspeciestat A. Russian knapweed is
weeds on their property contact with landowners have been released by the gran-rativeperenddpbd
B. The Act further states pang waterways and otter Mechanical control means USDAinme United States are that spreads by seed,and
that each local governing environmentally sensitive those methodologies or showing some control of creeping roots. It tras the
body is to develop and areas who have noxious management practices mat leafy spurge. Numerous ability to release chemicals
weed infestations. physically disrupt plant species of flea beetles, into the environment Os
3. Establish educational/ growth, including, but not Apioa SPP.,teed on leafy foliage decays which inhibit
calibration seminars limned to. tilling, mowing, spurge. Adults feed on the the growth of surrounding
(annually)that work dkecmy burning,flooding,mulching, foliage during the summer vegetation (allelapathic
NMI one hundred fifty(150) hand-pulling and hoeing. and the larvae burrow properties). Thus. once
to two hundred (200) mroughtheaiiandmlneme established. Russian
landowners each year. B. Management of the roots and fine root hairs. knapweed can colonize an
4. Hove established various noxious weeds wit These insects used alone Continued on
conact with the Colorado vary rr dependkrgupanthesite oynolconhdleafyspurge.
Department of wherelheplantsarela<ated. When used along with other Page 22
Transportation, Department Them fo tegratedmanagement InsectssuchasSpurgiaesu . 9
Contused ism Page 22 A.
Preventive control means ganspw s,and tat•oB and
wing meows which hwillam
gee companies oCeroae
labeled tee use Dakeatus Toodsoe Cwt W cop or n contaminating on rrom within Infom the Courtly„.the
bindweed. cane out throughout the hng on area. Weld Courtly
Nree ious the
Establishing preventive an gement Plan Weed
C. summer every r dayd practical arec -MrroN and wN be
IMeVawi - mpbwo 14-21 dkees.p man of and wed Bong 1. ve cooperation and their
moaagamenaptlawbyabe. This would at leash keep meonsdweed control. will- be
1. dalmatian toadflax from
B. encouraged. Assistance In
Range and padurelontl: going to seed.Whether this The preventive measures helping them develop their
conholtechntrewbreduce which seem most practical Integrated weed
a. Option#1, the root mass and for the County are as follows: management ms
Cultural and Chemical subsequently reduce an programs MI
Control: An herbicide existing stand is uncertain. I be dowse In wading dote
application using short landowners on private
residual herbicides such as c. Use of weed-free seed and property.amends bordering
glyphoaateand/or 2A-D can Biological Control: mulch for reclamation of the rivers in me county vie
dishtrbed woes; be considered high pflally
be made, followed by with livestock (sheep or areas. Landowner
reseeding In the fall with a goats),with proper stocking 2. ca.1c %cewilhbre Noxious
competitive sod-formingatlU i mwnsdn Fpdetolseed Free n, be an effective PrortoletheCoknadoWeed WeedManagement Planwb
grass
fertilizationfertilizationaccording to soil toadflax from going to seed grogram; F.
and Forage F.b required.
let or irrigation could be M range and pasture sites.
inelluted to stimulate grass Six speciesof insects feed art 3 Noxious weeds Mboroerbe
counties that do not occurin
growth. delmalbb nadllozantlnave
Prrealzeweedmanagement the County. Contact MN
b. been released in the United areas along routes of continue to be mode Mt
Opbona2,BgbgkdConhd a andCanada.TMyare: dispersal;and the weed control
any:Gazing without theand defoliating moth counties to Mantity o
sheep and fall will
the (Callpnasia Nnub),anovale 4. to identify the
summer and d from l keep feeding beetle Identify noxious weed noxbusweacspecieswhIch
field bindweed going (Brachypteralis pullcarius), species infesting counties occur in each county that
bseedand may reeucethe two seed capsule feeding bordering Weld County. would threaten the County.
underground root reserve. weevils (Gymnaetron C Planshavebeendeveloped
anthhinni and G.nelum).a weed-free seed and mulch to monitor the borders d em
C. Option#3, stemborkg weevil(Mecinus
Biological and Chemical pnthinus),and a rod boring standards. County,as necessary.
Cased: Grazing with cattle moth (Eteobale 1 Sec.15-1-140.
or meep from May through intemledella).TheCdaadoEducational programs.
early September, hollowed I Where the ground is (I)of the most important
nsl asla nuia an it ay disturbed byr activities,onosuch components of se
byene September efrwr early belavaila le tar entlXe On rsroptlprpandandgr vet management of r edam.
late or early be Dalmatian
oe for release On rot operations,re,anoil and v gas program.
October. Dalmatian le x.The use wt oil and Emphasis wtN be placed w
of multiple bio-control well operations,and laying continuing a multifaceted
4. Option k, species to effectively underground utility lines, educational program. fin
Chemical Control Only: hay et tobkndbonshatax weeds wilbethe etatetnh following programs hove
:Herbicides can be used has yetbbederansbared. tocobnaearevegetatethe been instituted in the pat
during the flower stage, site.Kisinporbnttiat these
and will continue to be
and in y in June and Ju y.a C. sites reclaimed so that conducted every year:
and in the lab just before a Chemical Coned:There are noxious weeds do not A.
hard freeze. Only the onhafewherbicidesiabeled become established. Timely newspaper articles
hetbicidetlobeledbrlhesle IwuseanDakrplbnToadax concerned with weed
Intended will be used. that are effective in 2. Identification and
2. controllIng lithe herbicides The County will use weed- management.
Roadrldw-d-wayandaMer that can be used free seed and mulch on an B.
non-crop areas: independently or in County operations Timely radio broadcasts
combination with other concerned with the following Me information in
a. Option el, herbicides are: picloram reclamation of disturbed the newspaper articles.
Cultural and Chemical (Tordon®); dicamba sites, such as on roadside C.
Control: An herbicide (Clarity®); 2,4-D (many resurfacing protects and Landowner weed
application using short different formulations); and sand and gravel lot management seminars and
residual herbicides,such as glyphosate (Roundup®, operations. Additional calibration workshops.
oryphoate and/or 2,4-D. Rodeo®). regulations may be D.
can be made,followed by C. considered for private Educational booths al the
reseeding in the tall with a Integrated Management operdbnsbeingcantedout CObrado.Fanm Show and
competitive sod-forming Options by Site on public land.
- grossmix: .. -- other appropriate venues.
D. E.
1. Weed-free hay and forage DTsTrbutebrochuresandCsU
b. Option*2. Range and Pasture Sites: program. MCI sheets to Individual
Chemical Control Only: brttlowners.
Herbicides can be used a. 1 Sec 15-1-150.
during the flower stage, Option •1 Cultural and Standards have been Mapping.
lypicasy in June and July, Chemical Control: A developed that enable A.
and M the fall NN before a herbicide application using growenlohavetheirlayand An accurate baseline mop
hard freeze. Only the short residual herbicides forage certified as noxious &the existing noxious weed
herbicides labeled for such as glyphosate and/or weed-tree.These standards infestationson County Ogles-
roadsides and other non- 2,4-Dcan be madefolbwed
crapbwareaswlllbeused. by reseeding will encourage growers to of-way rte is extremely
d fall with a produceaand
noxious rage weed-free evaluation
for the ongoing
3. oomass ahead a aboveng
bay and lodeathd used evaluvnes of the
bindweednd sites: Field of grasslistedlsrobin adetion, be shipped and used effectiveness and County
bindweed grown
in th Cullizalonacco Inwdobnl anywhere in the U.S. Weed rr Management
every crop grown In the te orbngatioing to soil weed-free
where noxious
County. Prescription weed tests or irrigation could be (particularlyProflr0ro. Therefore, a
towe tex standards computerized mapping
management o Instituted stimulate o currently exist). program has been
developed by Colorado increased grass growth. established and will be
state University weed 2. updated annually for the
scientists and the County b. The County Vegetation noxious weeds on County
ExtensionAgroranestcanbe Option e2 Biological and Management Specialist wit rights-of-way.
used. Chemical Coned: Grazing promote the Colorado Weed Sec.15-I-160.
Sec.15-l-125.Management wfMsheepagoatseomMay Free Forage Standards C a a p e r a t i v •
of Dalmatian TwrNax. throughout early September through the use of sentars, I n o a r g 0 v e r n m e n t a I
A. battalion can be cardedout,followed radio spots and newspaper agreements.
Toadllax is a deep-nested by a herbicide treatment in articles.
A.
pMea nd creeping
roots.
stay October. E. Contact will be made wit
seed and X
Management areas along the following agencies
I has waxy, heart-shaped c.
routes ddispenal. the Cob ng<ampanpsvbh
V leaves that posyillstern- Option al Mechanical and the Cobroao Noxious dew
The lbwwaesnapdragon- Chemical Control: Mowing 1.
shaped. bdgd yellow and can be carried out Management Act:
i are spread rapidly
have an orange center. I aknafi aothesunmarMthe seeds the airpandloiweer, C
Dalmatian t burry bud tg A hxraic de seeds Consequently,l antl we Colorado oepartment of
rrom siDgD feet n dry antl stage.n n her ode n se high weed Transportation
rangelandi ,loer roadsides, Octoberta nanbemaaeln seed dispersal areas are
fence es. I its o and OcfaberfoanYbobwpbnh. associated with rights-of- a
pastures. It is found in way,such ass all roads
norhwwWeidCaunlyabng 2. bag of Colorado state reason.
and e and ong of Parks and Recreation.
and pasturey and M range Road Non-crop
and waterways, i.e., along the
and pasture sites. Other Non-trop Areas Pwda,SouM Motie,St.Vrdn y
1.Conhd and little Thompson Rivers Colorado Divisional WildWe.
Measures a. and krigdbn canals.
a.CulNml Option el Mechanical and s
Control: Chemical Control: One 2.The Department of Public Colorado Stale Land Board.
Maintaining healthy sod- mowing cycle can be Workswilcarryoutonoxious
forming range and pastures carded out of the bud stage. weed control program on all 5,
and planting sod-forming A herbicide application County roads from May U.S.Forest Service.
perennial grasses such as shouldbemadedtheflower through October. The
Lu apubescentwhwigross, stage or to any plants that noxious weeds targeted for e.
streambank wheatgrass, have reboited in the fall. control include: Canada, other government entities.
BozobkyRuuWnwlldryeand musk, and Scotch thistle; i.
western wheatgrass have b. leafy spurge;Russian,diffuse Assistance will be offered In
been shown to be effective Option b2 Chemical Control andspotiedknapweed;Beld Helping each agency
in reducing the spread of Oni:Herbicidescanbeused
Ddmattan Taadllax.See'dg inthespringor early summer toadweetl; and dalmatian management develge integrated plans for
weed
kadaxnuetbemcontact Actual
plansfor assistance in
heir
alone MMnNedsilaswDnng during the lbwefore a ad willcentep or lands. Aphis weedncab
stawevsr,confrdthe exlsbng fr ze.all Onlst y
ea hard the Department of programs on weedcarml
stand. freeze.Only the herbicides Transportation,all irrigation programs on their properties
labeled for useon roadsides are ditch companies in the will also be offered.b. and other non-cropland County, the Union Pacific, C a o p e r a I I v •
Mechanical Control: areas will be used. Burlington Northern and intergovernmental
Mechanical control of Prevention measures. Great Western Railroad agreements can be.
aNliWtai B Be County IS 3. ABdssewrenlsfalheahole subsection. /Oegseph,
Naked to assist In Landowners Identified as cost of any edorcyseal sentence, clause, end
Implementing the weed negligent in the past. work performed by the phrase Mend Irrespective
- - County — V%Initen oibe fact hMtany au Of
Sec.15-1-170. 4. Management Specialist mare sections,abeecllorn,
Aelopt-a-Roadsideprogram. Landowners with twenty uponprbakewrr6,Inc4Wp paragraphs, sentences,
A. perceri(20%)arnvedt e& up b twenty percent(20%) clauses,aphiases mightbe
A.s "Adopt-a-Roadside" properly infested with for Inspection and other declared to be
program will be established noxious weeds. Incidental costs in unconstitutional or invalid.
which will give landowners sec.15.1-190. connection therewith,shall
the ability to take the Evakialbn of program. be nulled to the landowner NOTICE
responslbllfiyto manage the A. oroccupantbycerlifiedmal.
noxaxnweedsontheCaunty The goals and the plan of Failure to receive said PURSUANT to the Weld
rights-of-way that border work established in Sections auessmentshallnotacfasa County Code, Ordinance
Moir property. 15-1-30 through 15-1-180 of defense to said assessment. Number 2001-2 published
B. thi Article w@ be reviewed Sec.15-2x0. above,was Introduced and,
Landowners who are and evaluated at the end of Fawreto pay assessment. on motion duly made and
chemically sensitive or for every year. A written Any assessment which is not seconded,approved upon
some reason do not want evaluation will be prepared path within thirty-three(33) first reading on March 14
chemicals sprayed or establishing additions or daysa0ertheaateolraang 2001.A public hearing and
nanvkgacfivihes caned out changes in the plan of work by certified mall to the second reading is schedied
along their properly may for the following year. Any landowner or occupant of to be held In the Chambers
lake the responsrotlity for additions Of changes sad pnvatelandsuponwhkhthe of the Board, First Floor
managing the noxious be recommended by the County Vegetation Hearing Room, 915 10th
weedsontheroadlderiplm- NoxlausWeedManagemlent Management Specialist has Street, Greeley, Colorado
d-way. Landowner Advisory Board and performed enforcement 80631,on Apra 9,2001. AS
agreements with specific approved by the Board of work,shall constitute a lien persons In any manner
regrirementsforcoaplance County Commissioners. against each lot or tract of interested in Me reading of
will be established. B. and until paid and may be said Ordinance are
Sec.15-1-180. The County Noxious Weed certified by resolution of the requeaetlba0endandmay
Enforcement on private and Management Pan shall be Board of County be heard.
public property. reviewed and amended.as ComnbeanersbtheCaeiy_
A. needed,at least every three Treasurer to be collected in Please contact the Clerk to
Cooperation from all (3) years (Section 35-5.5- the same manner as the Board's office at phone
landowners (private and 107(4)(a),C.R.S.). provided for collection of
slate) we be encouraged taxes upon private lands In 42(970) 35tax6x Extension
52- 22.
422Q or eat yof shearing
through posil tivend ARTICLE II accorou)(a) C.R.S. bn35- era theeday f acs b y,
throughn communication byconact. EnarceneMdPlan Sec.15(2-50. C.R.S. you requwndotlonable
through personal e coMtrolact. Sec.15-2-50. you require reasonable
When weed control Sec. iz T Ch pace ate inlons Narig.
beawresaen landowner,
Authorized agent for This Chapter shall not be participate InMlshearap.
emby d la surer ay enforcement.t intended useof to create a civil
hove to be
measures may P105(2). to Section OunlY5-5.5- Boa of
nagalo my Any is or material,
mn
laved as instituted. All t, C.R.S., the Cement Board of County previo exhibits or information
to the
proceduresr established Vegetation Management r person thatmaya master Bta submitted tothe
NyMo Weed
Act, Specialist,eshis n are person that may administer Boardm Of County
Noxious Weed Act.Section employees and agents,are this Chapter in any manner. Commissioners eexamiConcerning
d
WeldCoun et seq.,and any herthe abovMObeeb enlace the oce the er o
WNd Ceaey Code, and e a anetl pion in BE IT FURBoard
ER e by in the office of t Clerk o to
and l ll feder state and Weed Management pion of the Boortl that the Clerk to the Board of aced in
followfollowed,regulations will be the eCo nly,b utadareho a the Bond to
arrange
eb tar the WeldC County
located in
enimed. prior to any procedures
sysetlzingth In Coactatl o arrange for the\VethCPuFNCea1510th
cntried out onti private
org Srccetlu5- set forth 9,n sup lent nOae eidCoga reet, Grehird eley,
Colorado,
ol510M
pubic out on priegra or Sections JS-a 0B, 55-108, Code renhea a amendments
betid the
eh, o 8:00
public prana Integrated C.R.S.,35-5.5-109,and 35-5.5-108,yothe cone wilt the hmenn, to o.m.between the hours., of ay
management weedtl prons C.R.S., and any other contained herein, rs, a.m.and p.r Monday
will be requested from asalutes, esate anaeaircalns , with . eiors, lhrc Friday, may be
certain landowners,bythCo tys an ordinances.
rules, i cl ding an dhcans, sections, County through Me Weld
e
Vegtatetl a nt and finipr including and sub-sections as said County Web c Page
Specialist Management ld thi remaChapter.g provisions of cCode;
to t a within any g sent t E-than
County isf the Weld this Chapter. onand resolve ng messages sent to an
n Noxious Weed Sec.15-2-20. Inconsistencies regarding d individual no Commissioner
Management Advisory Right ofnntry. nus pracen o may not be lxatlnlnion
Bead. Prifar t e entering of ent lands numbering or placement of case file.your indusfon
B. for Mapurpose dus d lons, articles, ctionsln of your t- the
Work priorities must be the County Noxious Weed saO ealwb-sectionsM correspondencesere Into the
▪ shetlandthesnun of M9n9gereen, Plan as set said Code. casepa,peoseseatlacapy
the County and the number forth herein, an Cdi lint- _ - - to GgMkspOcwweldco.us.
of landowners with existing Vegetation Management BE IT FURTHER ORDAINED by
noxlousweedprobleme.The Specialist stall first obtain a the Board H any section, SECOND READING: April 9,
billowing lbtprioeizes where "riglofentrr famine Board subsection, paragraph, 2001,at 9:00 a.m.
e narcementaclivlteswlllbe ufCountyCanahissloners,no sentence,clause,or phrase THIRD READING: April 30,
carried out in ranking order lessthanten(10)daysa0era of this Ordinance is lot any 2001.at 9:00 a.m.
of aportance: Notice to Control Identified reason held or decided to
Noxious Weeds has been be unconstitutional, such BOARD Of COUNTY
1. sent to the owner or decision shall not anent the COMMISSIONERS
Lands bordering all occapantottepdvatelmths validity of the remaining WELD COUNTY,COLORADO
waterways (rivers and and said owner or occupant portions hereof.TheBoardo
Irrigation ditches). hasb8etlbconpNwfhsaa County Commissioners DATED:March 16,2001
suttee. herebydecbrestotlwould PUBLISHED:Mach 21,2001.
2. Sec.15-2-30. haveenocledBesOgoance in the Tn-Town Fanner and
Complaint properties. Magog of assessments. In each and every secHbn, Myer
NOTICE
DOCKET NO. 2001-20
The Board of County Commissioners of Weld County, Colorado, will conduct a public hearing at
9:00 a.m., on March 14, 2001, in the Chambers of the Board of County Commissioners of Weld
County,Colorado,Weld County Centennial Center,91510th Street, First Floor,Greeley,Colorado,
for the purpose of considering amendments to certain Chapters of the Weld County Code. The
second and third readings of said Ordinance will be considered on April 9, 2001, and April 30,
2001. All persons in any manner interested are requested to attend said hearing and may be
heard.
Should any interested party desire the presence of a court reporter to make a record of the
proceedings, in addition to the taped record which will be kept during the hearing, the Clerk to the
Board shall be advised in writing of such action at least five days prior to the hearing. The cost of
engaging a court reporter shall be borne by the requesting party.
BE IT ALSO KNOWN that copies of the proposed amendments may be examined in the office of
the Clerk to the Board of County Commissioners, located in the Weld County Centennial Center,
915 10th Street, Third Floor, Greeley, Colorado, Monday through Friday, 8:00 a.m. to 5:00 p.m.
E-Mail messages sent to an individual Commissioner may not be included in the case file. To
ensure inclusion of your E-Mail correspondence into the case file, please send a copy to
charding@co.weld.co.us.
REQUEST: CODE ORDINANCE 2001-2, IN THE MATTER OF AMENDING THE WELD
COUNTY CODE, SPECIFICALLY CHAPTER 15, VEGETATION, AS FURTHER
DETAILED BELOW.
CHAPTER 15,VEGETATION. Change all current references to"Undesirable Plant Management"
to "Noxious Weed Management"; deletion of Whitetop (Cardaria draba) and Wild Proso
Millet (Panicum miliaceum) from list of weed species to be controlled in Weld County;
Addition of Management Plan for the control of Dalmatian toadflax (Linaria
dalmatica);update short-term and long-term goals; inclusion of arbitration panel to
determine final management plan when dispute arises between landowner or occupant and
County; text changes for consistency in the management plans for leafy spurge, Russian
knapweed, diffuse knapweed, spotted knapweed, Canada thistle, musk thistle, Scotch
thistle, and field bindweed; minor textual changes for clarification in Sections 15-1-130
Prevention measures, 15-1-140 Educational programs, 15-1-150 Mapping, 15-1-160
Cooperative intergovernmental agreements, 15-1-180 Enforcement on private and public
property, and Section 15-1-190 Evaluation of program; and Amend Section 15-2-30 to
reflect twenty percent instead of fifteen percent.
BOARD OF COUNTY COMMISSIONERS
WELD COUNTY, COLORADO
DATED: February 21, 2001
PUBLISHED: February 28, 2001, in the Tri-Town Farmer and Miner
Affidavit of Publication
STATE OF COLORADO
County of Weld SS.
I A. Winkler Riesel of said County of Adams .
being duly sworn,say that I am publisher of
INQUEST:C0DEO7DINANCE
FARMER&MINER NOTICE 2001-2 IN THE MATTER OF
that the same is a weekly newspaper of general DOCKET NO.70.40 AMENDING THE WELD
COUNTY CODE.
circulation was printed and published in the town
of The Board of County SPECIFICALLY CHAPTER 15.
Commissioners of Weld VEGETATION, AS FURTHER
W.
FREDERICK County, Colorado, will CHAPTER 5.D O VEGETATION.
cond tct a public hearing at
in said county and state that the notice of 9:C0a.m,.on.Morch1&2001. Change all references to
advertisement,of which the annexed is a true copy mtheChambersoftheBoartl 'Undesirable Plant
has been published in said weekly newspaper for of County Commissioners of Moragemenr to Noxious
Weld County, Colorado, Weed Management';
Weld County Centennial deletion of Whltetap
ONE consecutive weeks: that the notice was Center,915 1OM Street,First (Cardona drobo)and WNd
published in the regular and entire issue of every Floor,Greeley,Colorado,for Proso Millet (Ponlcum
number of said newspaper during the period and the purpose of considering rdaaceu-n)ham the ut of
time of publication of said notice and in the amendments to certain weed species to be
ChaptersoftheWeldCaunty confidled in Weld county;
newspaper proper and not in a supplement thereof: Addition of Management
that the first publication of said notice was Code.The second d Plan for the control of
contained in the issue of said newspaper bearing readngs of sold OrdinancdInancewill palmation toodnox Linarlo
the date of al,and
considered on A1. datmatico; update short-
2001,antl Apd 30.20D1. AN term and long-term
FEBRUARY 28 A.D. 2001 and the last neterested reglwted to rsons in any manner
hcWuonof orb anon panel
alteldfddBdQa hbncimay to determine final
publication thereof,in the issue of said newspaper, management plan when
bearing date, the 28th day of FEBRUARY be heard. - depute arises between
2001 that the said landowneroroccupontand
Should arty Interested parry County: text changes for
FARMER &MINER desire the presence of a consistency in the
court reporter to make a managementplansfor leafy
has been published continuously and record of the proceedings s[x+ge.Russian knapweed.
uninterruptedly during the period of at least fifty- In addition to the taped dttfuse knapweed, spotted
two consecutive weeks next prior to the first issue record which will be kept knapweed,Canada thistle,
thereof containing said notice or advertisement during the hearing,the Clerk musk thistle Scotch thistle,
to theBoardshallbeadvised and field bindweed; minor
above referred to: and that said newspaper was at in writing of such action at textual changes for
the time of each of the publications of said notice least five days prior to the chteficalons in Sections 15-
duly qualified for that purpose within the hearing. The cost of 1-130 Prevention measures,
meaning of an act entitled. "An Act Concerning engaging a court reporter 15-1-140 -Educational
Legal Notices, Advertisements and Publications shall be borne by the programs. 15-1-I50
and the Fees of Printers and Publishers thereof, requesting party. Mopping, 15-1-160
and to Repeal all Acts and Parts of Acts in C o o p e r o t v e
BE IT ALSO KNOWN that intergovernmental
Conflict with the Provisions of this Act"approved copies of the proposed agreements, 15-1-180
April 7, 1921, and all amendments thereof, and amendments may be Effacement on private and
particularly as amended by an act approved, examinedintheofceof the publIcproperty,ondsecnon
March 30, 1923, and an act approved May 13, Clerk tothe Board of County 15-1-190 Evaluation of
1931. Commissioners, located in program; and Amend
• the Weld County Center-win Section 15-2-30 to reflect
•
/ Center,915 10th Street,Third twenty percent instead of
/ Floor, Greeley. Colorado, fifteen Percent,
-jJ _ ,/ MondaythroughFriday,8:
Pun'
��� am, to 5:00 p.m. E-Mail
Pu6l�isiii messages sent to an BOARD OF COUNTY
IndMdud Conetsionermoy COMMISSIONERS
Subscribed and sworn to before me this 28thday not be Included ksthe case WELD COUNTY,COLORADO
of flle. To SWIM Inclusion of
yourE-MONca-su .4ersce DATED:
FEBRUARY. A.D. 2001 kfotac essIftP February
lsosemed Febry2l,
o copy to 2001
i c and ng@co.wealoe,tss, MAIMED: in the Tr-Town
Farmer and Miner.February
2&2001.
Notary Public
P.O.BOX 125
FT.LUPTON. CO 80621
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Iii t.aillin.-'.`,l.FXplfes
r,. ._ ,, 'i,2001
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