DEPARTMENT OF AGRICULTURE
Conservation Services Division
8 CCR 1206-2
RULES PERTAINING TO THE ADMINISTRATION AND ENFORCEMENT OF THE COLORADO NOXIOUS WEED ACT
3.1.	List A of the Colorado noxious weed list comprises the following noxious weed species:
African rue (Peganum harmala)
Camelthorn (Alhagi pseudalhagi)
Common crupina (Crupina vulgaris)
Cypress spurge (Euphorbia cyparissias)
Dyer's woad (Isatis tinctoria)
Elongated mustard (Brassica elongata)
Giant reed (Arundo donax)
Giant salvinia (Salvinia molesta)
Hydrilla (Hydrilla verticillata)
Japanese knotweed (Polygonum cuspidatum)
Giant knotweed (Polygonum sachalinense)
Bohemian knotweed (Polygonum x bohemicum)
Meadow knapweed (Centaurea pratensis)
Mediterranean sage (Salvia aethiopis)
Medusahead (Taeniatherum caput-medusae)
Myrtle spurge (Euphorbia myrsinites)
Orange hawkweed (Hieracium aurantiacum)
Purple loosestrife (Lythrum salicaria)
Rush skeletonweed (Chondrilla juncea)
Squarrose knapweed (Centaurea virgata)
Tansy ragwort (Senecio jacobaea)
Yellow starthistle (Centaurea solstitialis)
3.6.15.	Squarrose knapweed (Centaurea virgata). In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for squarrose knapweed:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, prescribed fire in conjunction with herbicide application, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Seed longevity is at least three years.
3.6.16.	Tansy ragwort (Senecio jacobaea). In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for tansy ragwort:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Seed longevity is at least sixteen years.
3.6.17.	Yellow starthistle (Centaurea solstitialis). In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for yellow starthistle:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, prescribed fire in conjunction with herbicide application, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Seed longevity is at least ten years.
3.6.18.	Elongated mustard (Brassica elongata).  In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for elongated mustard:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Seed longevity is unknown.  Infested sites must be monitored for at least 10 years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
3.6.19.	Giant reed (Arundo donax).  In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for giant reed:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Any efforts to physically remove plants must prevent fragmentation as stem fragments are considered plant propagules.
D.	Seed longevity is unknown.  Infested sites must be monitored for at least 10 years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
3.6.20.	Japanese knotweed (Polygonum cuspidatum).  In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for Japanese knotweed:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Any efforts to physically remove plants must prevent fragmentation as stem fragments are considered plant propagules.
D.	Seed longevity is unknown.  Infested sites must be monitored for at least 10 years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
3.6.21.	Giant knotweed (Polygonum sachalinense).  In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for Giant knotweed:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Any efforts to physically remove plants must prevent fragmentation as stem fragments are considered plant propagules.
D.	Seed longevity is unknown.  Infested sites must be monitored for at least 10 years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
3.6.22.	Bohemian knotweed (Polygonum x bohemicum).  In addition to the requirements set forth in this Part 3 for the management of all List A species, the following conditions also apply for Bohemian knotweed:
A.	The prescribed integrated management techniques are limited to the use of herbicides approved by the Commissioner, and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
B.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
C.	Any efforts to physically remove plants must prevent fragmentation as stem fragments are considered plant propagules.
D.	Seed longevity is unknown.  Infested sites must be monitored for at least 10 years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
4.7.4.	Spotted knapweed (Centaurea maculosa). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for spotted knapweed:
E.	The prescribed integrated management techniques for the eradication of designated populations are limited to the use of herbicides approved by the Commissioner and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
4.7.5.	Salt cedar (Tamarix chinensis, T. parviflora, and T. ramosissima). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for salt cedar:
D.	Elimination of all populations within the Republican River watershed is required prior to seed development in 2010 for all land outside the boundaries of an area demarcated by County Road 7, Longitude 102° 7’29 ”	 W, the southern border of Yuma County, and US Highway 385. For all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 100).
4.7.10.	Houndstongue (Cynoglossum officinale). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for houndstongue:
4.7.11	Perennial pepperweed (Lepidium latifolium). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for perennial pepperweed:

4.7.12. 	Dalmatian toadflax (Linaria dalmatica and Linaria genistifolia). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Dalmatian toadflax: 		
P.	Elimination of all populations in Routt County is required prior to seed development in 2011 for all land outside the boundaries of an area demarcated by Latitude 40°37’26”N, Longitude 106°59’17”W until it intersects with Trout Creek, Trout Creek on the east until the confluence with Fish Creek, Fish Creek on the east, and the southern and western borders of Routt County. Except as specified in Part 4.7.12T, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 116).
4.7.13.	Leafy spurge (Euphorbia esula). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for leafy spurge:
4.7.14.	Spurred anoda (Anoda cristata). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Spurred anoda:
4.7.15. 	Venice mallow (Hibiscus trionum). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Venice Mallow:
4.7.16.	Hoary cress (Cardaria draba). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for hoary cress:
4.7.17.	Russian knapweed (Centaurea repens). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Russian knapweed:
A.	Elimination of all populations is required prior to seed development in 2012 in all Colorado counties except for Archuleta, Boulder, Chaffee, Fremont, Kiowa, Larimer, Las Animas, Moffat, Morgan, Ouray, Pitkin, Pueblo, Saguache, and Weld Counties and those counties specified in Part 4.7.17P.
S.	The prescribed integrated management techniques for the eradication of designated populations are limited to the use of herbicides approved by the Commissioner and mowing or other mechanical techniques approved by the Commissioner.
4.7.18.	Sulfur cinquefoil (Potentilla recta). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for sulfur cinquefoil:
4.7.19.	Bull thistle (Cirsium vulgare).In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for bull thistle:
A. 	Elimination of all populations is required prior to seed development in 2015 in all Colorado counties except for Boulder, Gunnison, La Plata, Moffat and Rio Blanco Counties and those counties specified in Part 4.7.19G.
B.	Elimination of all populations in Boulder County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by State Highway 66 on the north, US Highway 287 on the east, the southern border of Boulder County, and US Highway 36 on the west. Except as specified in Part 4.7.19H, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure186).
C.	Elimination of all populations in Gunnison County is required prior to seed development in 2015 for all land outside the North Fork Gunnison Watershed. Except as specified in Part 4.7.19H, for all land within this watershed, suppression is the specified State management objective (see Rule 4.8, Figure 187).
D.	Elimination of all populations in La Plata County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern and eastern borders of La Plata County, US Highway 160 on the south, and the western border of La Plata County. Except as specified in Part 4.7.19H, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 188).
E. 	Elimination of all populations in Moffat County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern and southern borders of Moffat county and County Road 40D, US Highway 40 until it intersects County Road 14A, County Road 14A, County Road 40M, County Road 25 until it intersects the Little Snake River, the Little Snake River until it intersects County Road 21, County Road 21, and County Road 4 on the west. Except as specified in Part 4.7.19H, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 189).
F.	Elimination of all populations in Rio Blanco County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Rio Blanco County and State Highway 13, State Highway 64, and County Road 65 on the west. Except as specified in Part 4.7.19H, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 190).
G.	Except as specified in Part 4.7.19H, suppression is the specified State management objective for all populations in Broomfield, Chaffee, Dolores, Eagle, Garfield, Grand, Lake, Mesa, Montezuma, Montrose, Ouray, Pitkin, Routt, San Miguel, Summit, and Routt Counties.
H.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2015.
I.	The prescribed integrated management techniques for the eradication of designated populations are limited to the use of herbicides approved by the Commissioner and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
J.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
K.	Seed longevity is estimated to be up to at least three years. Infested sites must be monitored for at least three years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
4.7.20.	Eurasian watermilfoil (Myriophyllum spicatum). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Eurasian watermilfoil:
A.	Elimination of all populations is required prior to seed or rooted fragment development in 2015 in all Colorado counties except for Arapahoe, and Denver Counties and those counties specified in Part 4.7.20D.
B.	Elimination of all populations in Arapahoe County is required prior to seed or root plant fragment development in 2015 within the area between the ordinary high water mark of any intermittent or perennial stream or river and outside the perimeter of Cherry Creek Reservoir. For all water within the perimeter of Cherry Creek Reservoir, suppression is the specified State management objective (see Rule 4.8, Figure 191). 
C.	Elimination of all populations in Denver County is required prior to seed or rooted plant fragment development in 2015 within the area between the ordinary high water mark of any intermittent or perennial stream or river and outside the perimeter of Marston Lake. For all water within the perimeter of Marston Lake, suppression is the specified State management objective (see Rule 4.8, Figure 192). 
D.	Suppression is the specified State management objective for all populations in Alamosa, Boulder, Fremont, Jefferson and Weld Counties.
E.	The prescribed integrated management techniques for the eradication of designated populations are limited to the use of herbicides approved by the Commissioner and hand-pulling, or other mechanical techniques approved by the Commissioner.
F.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
G.	Seed longevity is not an important factor for this species. Infested sites must be monitored continuously after the populations have been eliminated and treatments must be repeated when necessary to prevent reestablishment from plant fragmentation.
4.7.21.	Musk thistle (Carduus nutans). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for musk thistle:
A.	Except as specified in Part 4.7.21N, elimination of all populations is required prior to seed development in 2015 in all Colorado counties except for Archuleta, Jackson, Mesa, Moffat, Park, Phillips, Rio Blanco, Routt, Sedgwick, and Yuma Counties and those counties specified in Part 4.7.21L.
B. 	Except as specified in Part 4.7.21N, elimination of all populations in Archuleta County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern border of Archuleta County, US Highway 160 and US Highway 84 on the east, and the southern and western borders of Archuleta County. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 194).
C.	Except as specified in Part 4.7.21N, elimination of all populations in Jackson County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern border of Jackson County, State Highway 127 and State Highway 125 on the east, and CR 6W on the south and west. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 195).
D.	Except as specified in Part 4.7.21N, elimination of all populations in Mesa County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Mesa County and Longitude 108°23’36”W. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 196).
E.	Except as specified in Part 4.7.21N, elimination of all populations in Moffat County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern and southern borders of Moffat county and County Road 40D, US Highway 40 until it intersects County Road 14A, County Road 14A, County Road 40M, County Road 25 until it intersects the Little Snake River, the Little Snake River until it intersects County Road 21, County Road 21, and County Road 4 on the west. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 197).
F.	Except as specified in Part 4.7.21N, elimination of all populations in Park County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by US Highway 285 on the north, the eastern border of Park County, County Road 211 on the south, and County Road 77 on the west. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 198).
G.	Except as specified in Part 4.7.21N, elimination of all populations in Phillips County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern border of Phillips County, County Roads 29, 38, 31, 24, and 29 on the east, and the southern and western borders of Phillips County. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 199).
H.	Except as specified in Part 4.7.21N, elimination of all populations in Rio Blanco County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Rio Blanco County and State Highway 13, State Highway 64, and County Road 65 on the west. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 200).
I.	Except as specified in Part 4.7.21N, elimination of all populations in Routt County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by US Highway 40 on the north, and the eastern, southern, and western borders of Routt County. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 201).
J.	Except as specified in Part 4.7.21N, elimination of all populations in Sedgwick County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by County Road 20 on the north, County Road 55 on the east, County Road 12 on the south, and US Highway 385 on the west. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 202).
K.	Except as specified in Part 4.7.21N, elimination of all populations in Yuma County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by County Road 52 and County Road 53 on the north, County Road M on the east, US Highway 34 on the south, and State Highway 59 on the west and of an area demarcated by US Highway 34 on the north, the eastern and southern borders of Yuma County, and County Road V, US Highway 36, and County Roads AA, Z, 20, CC, 26, and U on the west. Except as specified in Part 4.7.21M and Part 4.7.21N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 203).
L.	Except as specified in Part 4.7.21M and Part 4.7.21N, suppression is the specified State management objective for all populations in Adams, Arapahoe, Boulder, Broomfield, Chaffee, Clear Creek, Custer, Delta, Denver, Dolores, Douglas, Eagle, Elbert, El Paso, Gilpin, Grand, Fremont, Garfield, Gunnison, Jefferson, La Plata, Lake, Logan, Montezuma, Montrose, Ouray, Pitkin, Pueblo, San Miguel, Summit, and Weld.
M.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2015.
N.	All populations in this state that are within the area from the center of any intermittent or perennial stream or river to 15 feet beyond the ordinary high water mark on both banks must be eliminated in 2016.
O.	The prescribed integrated management techniques for the eradication of designated populations are limited to the use of herbicides approved by the Commissioner and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
P.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
Q.	Seed longevity is estimated to be at least ten years. Infested sites must be monitored for at least ten years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
4.7.22.	Scentless chamomile (Matricaria perforata). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Scentless chamomile:
G.	Except as specified in Part 4.7.22H and Part 4.7.22I, suppression is the specified State management objective for all populations in Clear Creek, Eagle, Grand, Gunnison, Jefferson, Lake, Pitkin, and Summit Counties.
4.7.23	Scotch thistle (Onopordum acanthium and Onopordum tauricum). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for Scotch thistle:
A.	Except as specified in Part 4.7.23R, elimination of all populations is required prior to seed development in 2015 in all Colorado counties except for Delta, El Paso, Fremont, Garfield, Gunnison, Las Animas, Logan, Mesa, Moffat, Montezuma, Pitkin, Pueblo, Rio Blanco, and Weld Counties and those counties specified in Part 4.7.23P.
B.	Except as specified in Part 4.7.23R, elimination of all populations in Delta County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern and eastern borders of Delta County, the southern border until it intersects with State Highway 92, State Highway 92 on the south, and State Highway 65 on the west. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 209).
C.	Except as specified in Part 4.7.23R, elimination of all populations in El Paso County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern border of El Paso County, State Highway 83 on the east and the south, State Highway 115, US Highway 24 on the south, and the western border of El Paso county. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 210).
D.	Except as specified in Part 4.7.23R, elimination of all populations in Fremont County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Fremont County and County Road 401B, State Highway 115, US Highway 50, County Road 441B, and County Road 509B on the west. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 211).
E.	Except as specified in Part 4.7.23R, elimination of all populations in Garfield County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Garfield County, and Longitude 108°9’6”W. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 212).
F.	Except as specified in Part 4.7.23R, elimination of all populations in Gunnison County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern border of Gunnison County, Longitude 106°52'27"W, Latitude 38°40'8"N, and the western border of Gunnison County. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 213).
G.	Except as specified in Part 4.7.23R, elimination of all populations in Las Animas County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by County Road 66.1and County Road 66 on the north, Interstate 25 on the east, County Road 44 and County Road 46 on the south, and Longitude 104°48’45”W. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 214).
H.	Except as specified in Part 4.7.23R, elimination of all populations in Logan County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by State Highway 14 on the north, County Road 25 on the east, County Road 18 on the south, and County Roads 20 and 11 on the west. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 215).
I.	Except as specified in Part 4.7.23R, elimination of all populations in Mesa County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Mesa County, and the Gunnison River and the Colorado River on the west. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 216).
J.	Except as specified in Part 4.7.23R, elimination of all populations in Moffat County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Moffat County, and Longitude 108°11’5”W. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 217).
K.	Except as specified in Part 4.7.23R, elimination of all populations in Montezuma County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by Latitude 37°22’32”N, County Road 44, US Highway 160, and County Road 45 on the east, Latitude 37°18’44”N, County Road G on the South, and County Roads 38.75 and 39 on the west. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 218).
L.	Except as specified in Part 4.7.23R, elimination of all populations in Pitkin County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern border of Pitkin County, Longitude 106°52’27”W, and the southern and western borders of Pitkin County. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 219).
M.	Except as specified in Part 4.7.23R, elimination of all populations in Pueblo County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the Upper Arkansas Watershed. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 220).
N.	Except as specified in Part 4.7.23R, elimination of all populations in Rio Blanco County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Rio Blanco County, and State Highway 13 and County Road 7 on the west. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 221).
O.	Except as specified in Part 4.7.23R, elimination of all populations in Weld County is required prior to seed development in 2015 for all land outside the boundaries of an area demarcated by County Road 90 and State Highway 14 on the north, County Road 73 on the east, State Highway 52 and County Road 45 on the south, the southern border of Weld County, and the western border of Weld County. Except as specified in Part 4.7.23Q and Part 4.7.23R, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 222).
P.	Except as specified in Part 4.7.23Q and Part 4.7.23R, suppression is the specified State management objective for all populations in Adams, Arapahoe, Boulder, Broomfield, Denver, Dolores, Douglas, Eagle, Garfield, Grand, Huerfano, Jefferson, and La Plata Counties.
Q.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2015.
R.	All populations in this state that are within the area from the center of any intermittent or perennial stream or river to 15 feet beyond the ordinary high water mark on both banks must be eliminated prior to seed development in 2016.
S.	The prescribed integrated management techniques for the eradication of designated populations are limited to the use of herbicides approved by the Commissioner and hand-pulling, digging, or other mechanical techniques approved by the Commissioner.
T.	Prescribed integrated management techniques do not include the use of: (1) any biocontrol agents or; (2) any herbicides, cultural techniques, or mechanical techniques other than those approved by the Commissioner.
U.	Seed longevity is estimated to be up to least seven years. Infested sites must be monitored for at least three years after the populations have been eliminated and treatments must be repeated when necessary to prevent flowering and development of seed.
4.7.24.	Common teasel (Dipsacus fullonum). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for common teasel:
A.	Elimination of all populations is required prior to seed development in 2014 in all Colorado counties except for Adams, Arapahoe, Boulder, Chaffee, El Paso, Jefferson, Larimer, Logan, Pueblo and Weld and those counties specified in Part 4.7.24L.
B.	Elimination of all populations in Adams County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Adams County, Hayesmount Road on the east, and the southern and western borders of Adams County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 223).
C.	Elimination of all populations in Arapahoe County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Arapahoe County, State Highway 470 on the east, and the southern and western borders of Arapahoe County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 224).
D.	Elimination of all populations in Boulder County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern border of Boulder County, and State Highway 93 and US Highway 36 on the west. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 225).
E.	Elimination of all populations in Chaffee County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 38°37'32.524"N, the eastern border of Chaffee County, Latitude 38°30'2.288"N, and Longitude 106°11'20.411"W. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 226).
F.	Elimination of all populations in El Paso County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of El Paso County, Interstate 25 on the east. State Highway 24 until it intersects with Fountain Creek, Fountain Creek on the east and the southern and western border of El Paso County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 227).
G.	Elimination of all populations in Jefferson County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern and eastern borders of Jefferson County, County Road 97 and US Highway 285 on the south, and the western border of Jefferson County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 228).
H.	Elimination of all populations in Larimer County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 40°41'17.811"N, the eastern and southern borders of Larimer County, and Longitude 105°15'8.446"W. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 229).
I.	Elimination of all populations in Logan County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by US Highway 6 north to Sterling, then U.S. Highway 138 to the eastern border of Logan County, Interstate 76, and the southern border of Logan County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 230).
J.	Elimination of all populations in Pueblo County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Pueblo County, the eastern border of Pueblo County, Latitude 38°7'28.008"N, Longitude 104°56'13.356"W, and the southern and western borders of Pueblo County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 231).
K.	Elimination of all populations in Weld County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 40°26'17.543"N, Longitude 104°22'28.738"W, Latitude 40°18'45.522"N, US Highway 85, and the southern and western borders of Weld County. Except as specified in Part 4.7.24M and Part 4.7.24N, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 232).
L.	Except as specified in Part 4.7.24M and Part 4.7.24N, suppression is the specified State management objective for all populations in Broomfield and Denver Counties.
M.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2014.
N.	All populations in this state that are within the area from the center of any intermittent or perennial stream or river to 15 feet beyond the ordinary high water mark on both banks must be eliminated prior to seed development in 2014.
4.7.25.	Cutleaf teasel (Dipsacus laciniatus). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for cutleaf teasel:
A.	Elimination of all populations is required prior to seed development in 2014 in all Colorado counties except for Adams, Jefferson, and Weld and those counties specified in Part 4.7.25E.
B.	Elimination of all populations in Adams County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Adams County, Hayesmount Road on the east, and the southern and western borders of Adams County. Except as specified in Part 4.7.25F and Part 4.7.25G, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 233).
C.	Elimination of all populations in Jefferson County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern and eastern borders of Jefferson County, County Road 97 and US Highway 285 on the south, and the western border of Jefferson County. Except as specified in Part 4.7.25F and Part 4.7.25G, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 234).
D.	Elimination of all populations in Weld County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 40°26'17.543"N, Longitude 104°22'28.738"W, Latitude 40°18'45.522"N, US Highway 85, and the southern and western borders of Weld County. Except as specified in Part 4.7.25F and Part 4.7.25G, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 235).
E.	Except as specified in Part 4.7.25F and Part 4.7.25G, suppression is the specified State management objective for all populations in Broomfield and Denver Counties.
F.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2014.
G.	All populations in this state that are within the area from the center of any intermittent or perennial stream or river to 15 feet beyond the ordinary high water mark on both banks must be eliminated prior to seed development in 2014.
4.7.26.	Dame’s rocket (Hesperis matronalis). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for dame’s rocket:
A.	Elimination of all populations is required prior to seed development in 2014 in all Colorado counties except for Adams, Boulder, Denver, Larimer, Logan, Mesa, Moffat, Pueblo, and Summit and those counties specified in Part 4.7.26K.
B.	Except as specified in Parts 4.7.26L and Part 4.7.26M, elimination of all populations in Logan County is required prior to seed development in 2015.
C.	Except as specified in Parts 4.7.26L and Part 4.7.26M, elimination of all populations in Moffat County is required prior to seed development in 2016.
D.	Elimination of all populations in Adams County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Adams County, Longitude 104°48'32.078"W, and the southern and western border of Adams County. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 236).
E.	Elimination of all populations in Boulder County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by northern, eastern, and southern borders of Boulder County and State Highway 72 and State Highway 7 north of the junction with State Highway 72 north to the county line, on the west. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 237).
F.	Elimination of all populations in Denver County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by northern border of Denver County, Chambers Road on the east, and the southern and western borders of Denver County. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 238).
G.	Elimination of all populations in Larimer County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 40°45'8.026"N, and the eastern, southern and western border of Larimer County. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 239).
H.	Elimination of all populations in Mesa County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the western and northern borders of Mesa County, Longitude 108°18'37.128"W until it intersects with the southern border of Mesa County, the southern border until it intersects with the Gunnison River, the Gunnison River, and Latitude 39°3'33.868"N. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 240).
I.	Elimination of all populations in Pueblo County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 38°7'33.068"N, Longitude 104°52'32.32"W, and the southern and western border of Pueblo County. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 241).
J.	Elimination of all populations in Summit County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 39°41'5.354"N, Longitude 106°0'1.095"W, the southern border of Summit county, State Highway 91 and Interstate 70, and Longitude 106°7'32.266"W. Except as specified in Part 4.7.26L and Part 4.7.26M, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 242).
K.	Except as specified in Parts 4.7.26L and Part 4.7.26M, suppression is the specified State management objective for all populations in Broomfield and Jefferson Counties.
L.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2014.
M.	All populations in this state that are within the area from the center of any intermittent or perennial stream or river to 15 feet beyond the ordinary high water mark on both banks must be eliminated prior to seed development in 2014.
4.7.27.	Jointed goatgrass (Aegilops cylindrica). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for jointed goatgrass:
A.	Elimination of all populations is required prior to seed development in 2014 in all Colorado counties except for Archuleta, Boulder, Broomfield, Delta, Denver, Dolores, Jefferson, Las Animas, Moffat, Montezuma, Pueblo, and Routt and those counties specified in Part 4.7.27N. 
B.	Elimination of all populations in Archuleta County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by  Latitude 37°15'1.38"N, Longitude 107°14'57.993"W, Latitude 7°3'49.422"N, Longitude 107°7'30.054"W, the southern border of Archuleta County, and Longitude 107°18'46.152"W. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 243).
C.	Elimination of all populations in Boulder County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern borders of Boulder County, and Longitude 105°18’46.968”W. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 244).
D.	Elimination of all populations in Broomfield County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Broomfield County, Sheridan Boulevard on the east, and the southern and western border of Broomfield County. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 245).
E.	Elimination of all populations in Delta County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 39°0'0.22"N, Longitude107°52'31.684"W. Latitude 38°52'30.716"N, and Longitude 107°56'17.69"W. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 246).
F.	Elimination of all populations in Denver County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Denver County, Havana Street and Havana Way on the east, and the southern and western border of Denver County. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 247).
G.	Elimination of all populations in Dolores County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Dolores County, the Dolores River on the east, and the southern and western border of Dolores County. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 248).
H.	Elimination of all populations in Jefferson County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern and eastern borders of Jefferson County, County Road 97 and US Highway 285 on the south, and the western border of Jefferson County Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 249).
I.	Elimination of all populations in Las Animas County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern border of Las Animas County and Longitude 103°15'7.862"W . Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 250).
J.	Elimination of all populations in Moffat County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 40°33'45.731"N, the eastern border of Moffat County, Latitude 40°26'15.46"N, and Longitude 107°45'5.875"W. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 251).
K.	Elimination of all populations in Montezuma County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern border of Montezuma County, Longitude 108°37'11.445"W, Latitude 37°29'58.16"N, and the western border of Montezuma County. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 252).
L.	Elimination of all populations in Pueblo County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by Latitude 38°11'16.617"N, Longitude 104°37'30.986"W, and the southern and western border of Pueblo County. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 253).
M.	Elimination of all populations in Routt County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by State Highway 40 on the north, County Road 51 on the east and south, and County Road 37 and Shelton Lane on the west. Except as specified in Part 4.7.27O, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 254).
N.	Except as specified in Part 4.7.27O, suppression is the specified State management objective for all populations in Baca, Garfield, La Plata, Logan, Mesa, Montrose, Ouray, Phillips, Otero, San Miguel, and Yuma Counties.
O.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2014.
4.7.28.	Moth mullein (Verbascum blattaria). In addition to the requirements set forth in this Part 4 for the management of all List B species, the following conditions also apply for moth mullein:
A.	Elimination of all populations is required prior to seed development in 2014 in all Colorado counties except for Boulder, Larimer, and Pueblo and those counties specified in Part 4.7.28E.
B.	Elimination of all populations in Boulder County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by the northern, eastern, and southern border of Boulder County and Longitude 105°18'49.647"W. Except as specified in Part 4.7.28F, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 255).
C.	Elimination of all populations in Larimer County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by State Highway 34 on the north, State Highway 287 on the east, the southern border of Larimer County, and State Highway 36 on the west. Except as specified in Part 4.7.28F, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 256).
D.	Elimination of all populations in Pueblo County is required prior to seed development in 2014 for all land outside the boundaries of an area demarcated by State Highway 165 on the north, Interstate 25 on the east, and the southern and western border of Pueblo County. Except as specified in Part 4.7.28F, for all land within these boundaries, suppression is the specified State management objective (see Rule 4.8, Figure 257).
E.	Except as specified in Part 4.7.28F, suppression is the specified State management objective for all populations in Broomfield, Chaffee, and Lake Counties.
F.	All populations in this state that are within 15 feet from the edge of any public road and any immediately adjacent area used for parking must be eliminated prior to seed development in 2014.
4.8.	Figures 1 – 257 (Figure 193 is purposely omitted.)

5.1.	List C of the Colorado noxious weed list comprises the following noxious weed species:
Bulbous bluegrass (Poa bulbosa)
Chicory (Cichorium intybus)
Common burdock (Arctium minus)
Common mullein (Verbascum thapsus)
Common St. Johnswort (Hypericum perforatum)
Downy brome (Bromus tectorum) 
Field bindweed (Convolvulus arvensis)
Halogeton (Halogeton glomeratus)
Johnsongrass (Sorghum halepense)
Perennial sowthistle (Sonchus arvensis)
Poison hemlock (Conium maculatum)
Puncturevine (Tribulus terrestris)
Puncturevine (Tribulus terrestris)
Redstem filaree (Erodium cicutarium)
Velvetleaf (Abutilon theophrasti)
Wild proso millet (Panicum miliaceum)
Part 6	Watch List Species
6.1.	The Watch List is comprised of the following species:
Asian mustard  (Brassica tournefortii)
Baby's breath  (Gypsophila paniculata)
Bathurst burr, Spiney cocklebur  (Xanthium spinosum)
Common bugloss  (Anchusa officinalis)
Common reed  (Phragmites australis)
Flowering rush  (Butomus umbellatus)
Hairy willow-herb  (Epilobium hirsutum)
Himalayan blackberry  (Rubus armeniacus)
Japanese blood grass/cogongrass  (Imperata cylindrical)
Meadow hawkweed  (Hieracium Caespitosum)
Onionweed  (Asphodelus fistulosus)
Pampas grass	(Cortideria jubata)
Scotch broom  (Cytisus scoparius)
Sericea lespedeza (Lespedeza cuneata)
Swainsonpea  (Sphaerophysa salsula)
Syrian Beancaper  (Zygophyllum fabago)
Water hyacinth  (Eichhornia crassipes)
Water lettuce  (Pistia stratiotes)
White bryony  (Bryonia alba)
Woolly Distaff Thistle  (Carthamus lanatus)
6.2.	Watch List weed species are species for which the Commissioner, in consultation with the state noxious weed advisory committee, local governments, and other interested parties, has determined to pose a potential threat to the agricultural productivity and environmental values of the lands of the state. The Watch List is intended to serve advisory and educational purposes only. Its purpose is to encourage the identification and reporting of these species to the Commissioner in order to facilitate the collection of information to assist the Commissioner in determining which species should be designated as noxious weeds. The Commissioner may place a plant species on the Watch List if any of the following are present:
6.2.1.	The plant species is not known to occur in the state, but its noxious characteristics are recognized by another state or states in the region.
6.2.2.	The plant species is not known to occur in the state, but has been found to exhibit noxious characteristics in agricultural lands and/or native plant communities similar to those found in Colorado.
6.2.3.	The plant species with suspected noxious qualities as determined by the use of a plant assessment process is present in the state but its distribution and effect on agricultural and natural lands is undetermined at this time.
6.3.	Once the noxious characteristics and distribution of plant species on the Watch List are better known, the Commissioner, in consultation with the state noxious weed advisory committee, local governments, and other interested parties, may act to place a species on List A or List B, or may remove it from the Watch List.
Part 7 	Compliance Waiver
7.1.	Local governing bodies and landowners with any population of any List A species or population of any List B species designated for eradication may be eligible for a compliance waiver granted by the Commissioner.
7.2.	To apply for a compliance waiver, local governing bodies or landowners must submit a written petition to the State Weed Coordinator via mail (Colorado Department of Agriculture, 700 Kipling Street, Suite 4000, Lakewood, CO 80215-8000), fax (303-239-4125), or email (csdcomments@ag.state.co.us with “Attention: noxious weed petition” in the subject line). The Department will only consider a petition for waiver during the growing season of the target weed when the extent of the problem can be properly evaluated at the site for which the petition is submitted. The petition should provide specific information pertinent to the reevaluation of eradication as the appropriate management objective for a specified geographic region.
7.3.	The Commissioner will evaluate petitions using the following criteria:
A.	The known distribution of the weed species in the specified geographic region;
B.	The feasibility of current control technologies to achieve eradication of the population;
C.	The cost of carrying out eradication as part of statewide weed management plan; and
D.	Any other site-specific information that establishes eradication is not feasible for a specific population in a specified geographic region.
Petitioners must address these criteria and explain specifically what conditions exist that establish that eradication is not a viable management objective.
7.4.	The Commissioner will grant or deny a petition within fifteen business days of receiving it.
7.5.	The Commissioner may revoke a compliance waiver at any time if the information provided in the petition was incomplete or inaccurate, or if conditions change such that eradication becomes a viable management objective.
Part 8	Statements of Basis, Specific Statutory Authority and Purpose
8.1.	February 11, 2004 – Effective May 3, 2004
8.2.	March 4, 2005 – Effective May 2, 2005
8.3.	March 9, 2006 – Effective May 30, 2006
8.4.	May 3, 2007 – Effective July 1, 2007
8.5.	August 12, 2008 – Effective September 30, 2008
8.6.	July 16, 2009 – Effective August 30, 2009
8.7.	June 10, 2010 – Effective July 30, 2010
8.8.	November 8, 2011 – Effective December 30, 2011
Statutory Authority
These amendments to the rules are adopted by the Commissioner of Agriculture pursuant to his authority under the Colorado Noxious Weed Act, §§ 35-5.5-108 and 115, C.R.S. 
Purpose
The purpose of these amendments to the rules are to: (1) designate additional species of noxious weeds for inclusion in the current categories (Lists A and C) listed in Parts 3 and 5 of the existing Rules; (2) move one noxious weed species from List A to the Watch List, and delete its management plan from Part 3; (3) develop and implement new state noxious weed management plans for additional species listed for statewide eradication (List A); (4) develop and implement state noxious weed management plans for selected List B species; (5) correct a management plan in Part 4; (6) add a new list (Watch List) at Part 6 and (7) correct non-substantive typographical errors and update internal citations to reflect new rules.
The specific amendments to the rules are as follows:
1.	Add to Rule 3.1 the following species: Elongated mustard (Brassica elongata), Giant reed (Arundo donax), Japanese knotweed (Polygonum cuspidatum), Giant knotweed (Polygonum sachalinense) and Bohemian knotweed(Polygonum x bohemicum).
2.	Move Sericea lespedeza (Lespedeza cuneata) from List A to the Watch List.
3.	Delete 3.6.15, the management plan for Sericea lespedeza (Lespedeza cuneata).
4.	Add new Rule 3.6.18 to establish a noxious weed management plan for Elongated mustard (Brassica elongata).
5.	Add new Rule 3.6.19 to establish a noxious weed management plan for Giant reed (Arundo donax).  
6.	Add new Rule 3.6.20 to establish a noxious weed management plan for Japanese knotweed (Polygonum cuspidatum).  
7.	Add new Rule 3.6.21 to establish a noxious weed management plan for Giant knotweed (Polygonum sachalinense).  
8.	Add new Rule 3.6.22 to establish a noxious weed management plan for Bohemian knotweed (Polygonum x bohemicum).  
9.	Revise Rule 4.7.17.S to correct management techniques for Russian knapweed (Centaurea repens); and to remove Jefferson from list of counties in 4.7.17.A.
10.	Revise Rule 4.7.22.G. to add Jefferson to the list of counties in 4.7.22.A.
11.	Add new Rule 4.7.24 to establish a noxious weed management plan for Common teasel (Dipsacus fullonum).
12.	Add new Rule 4.7.25 to establish a noxious weed management plan for Cutleaf teasel (Dipsacus laciniatus).
13.	Add new Rule 4.7.26 to establish a noxious weed management plan for Dame’s rocket (Hesperis matronalis.
14.	Add new Rule 4.7.27 to establish a noxious weed management plan for Jointed goatgrass (Aegilops cylindrica).
15.	Add new Rule 4.7.28 to establish a noxious weed management plan for Moth mullein (Verbascum blattaria).
16.	Add new figures 223 through 257 to Rule 4.8 to reflect the new noxious weed management plans for common teasel, cutleaf teasel, dame’s rocket, jointed goatgrass and moth mullein, 
17.	Add to Rule 5.1 Bulbous bluegrass (Poa bulbosa).
18.	Add a new Part 6 Watch List Species.
19.	Make non-substantive corrections of typographical errors in the rule in sections 4.7.4.E, 4.7.5.D, and 5.1. 
Factual and Policy Issues
The factual and policy issues encountered in the proposal of these amendments to the rules are as follows:
1.	The Colorado Noxious Weed Act authorizes the Commissioner to designate by rule those species placed in List A and subject to eradication wherever detected statewide in order to protect neighboring lands and the state as a whole.  The following new species have been determined to present a threat to the economic and environmental value of the state of Colorado are placed on List A:  Elongated mustard (Brassica elongata), Giant reed (Arundo donax), Japanese knotweed (Polygonum cuspidatum), Giant knotweed (Polygonum sachalinense), and Bohemian knotweed (Polygonum x bohemicum
2.	The current rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act state that the Commissioner will develop and implement state noxious weed management plans for selected List A and List B species.
3.	State noxious weed management plans are necessary in order to coordinate appropriate actions at the private, local, state, and federal levels that will halt the continued spread of these List A and List B species.
4.	The proposed plans have been developed in consultation with the state noxious weed advisory committee, local governments, and other interested parties. The proposed plans include weed management plans for List A species Elongated mustard (Brassica elongata), Giant reed (Arundo donax), Japanese knotweed (Polygonum cuspidatum), Giant knotweed (Polygonum sachalinense), and Bohemian knotweed (Polygonum x bohemicum, and List B species Common teasel (Dipsacus fullonum), Cutleaf teasel (Dipsacus laciniatus), Dame’s rocket (Hesperis matronalis, Jointed goatgrass (Aegilops cylindrical), and Moth mullein (Verbascum blattaria).
5.	The change to Rule 3.1 and 3.6.16 is due in order to move Sericea lespedeza (Lespedeza cuneata) from List A to the Watch List based on information gathered about the species that makes it less likely to appear in the state, but still worthy of continuing observation.
6.	The change to Rule 4.7.17.A is due in order to implement Jefferson County’s request that it be removed from the list of counties excepted from the requirement of eliminating Russian knapweed (Centaurea repens) from within its borders.
7.	The change to Rule 4.7.17.S is due in order to correct the management techniques for Russian knapweed (Centaurea repens) which include hand pulling and digging.  Due to the extensive root systems of this species, hand pulling and digging are not considered to be effective in most instances, while mowing in combination with herbicide application is considered more effective.
8.	The change to Rule 5.1 adds Bulbous bluegrass (Poa bulbosa) to List C, reflecting its invasive qualities as determined by a plant assessment process, and also recognizing its widespread distribution.
9.	The change to Part 6 of the rule is due in order to create a new, non-regulatory invasive species list, called the Watch List.  The purpose of the list is to encourage the identification and reporting of these species so that, in consultation with the state noxious weed advisory committee, local governments and other interested parties, the Commissioner may determine which of these species should be designated as noxious weeds.