|Gravel pit minimum standards
Gravel/borrow area shall be free of those noxious weeds or undesirable plant species identified in the following list and those weeds declared noxious within the state of origin.
1. Gravel/borrow material shall be inspected in the State/Province of origin by proper officials or authority.
2. Gravel/borrow material shall also be inspected in the area of origin (area shall include, but not limited to, surrounding ditches, top soil piles, gravel/sand piles, fence rows, roads, easement, rights-of-way, working areas, storage areas, and a buffer zone surrounding the area.)
3. Gravel/borrow material shall be inspected prior to movement by the proper officials or authority.
4. Gravel/borrow area which contains any noxious weeds, or undesirable plant species, as identified in the following list, may be certified if the following requirements are met:
a. Area upon which the gravel/borrow material was mined was treated to prevent seed formation or seed ripening to the degree that there is no danger of dissemination of the seed, or any injurious portion thereof from such noxious weeds, or undesirable plant species, or the propagating parts of the plant are not capable of producing a new plant.
b. Noxious weed(s) or undesirable plant species was treated not later than rosette to bud stage, or boot stage for grass species.
c. Treatment method can include but is not limited to: 1) burning, 2) mowing, cutting or rouging, 3) mechanical methods, or 4) chemicals.
5. An inspection certificate shall document that the above requirements have been met based upon a reasonable and prudent visual inspection.
Minimum Guidelines for gravel/borrow material inspections:
The inspector will follow the following inspection procedures:
1. The entire border shall be walked or driven.
2. All storage areas, gravel/sand piles shall also be inspected and meet the standards.
3. Around all equipment, crushers, and working areas must be inspected to meet the standards.
4. Areas shall be inspected regularly at least every 30 days in the growing season.
5. An inspector may not inspect gravel/borrow material of which said inspector has ownership or financial interest.
North American Weed Free Forage Certification Standards List
Absinth wormwood Artemisia absinthium
Bermudagrass Cynodon dactylon
Buffalobur Solanum rostratum
Canada thistle Cirsium arvense
Common burdock Arctium minus
Common crupina Crupina vulgaris
Common tansy Tanacetum vulgare
Dalmatian toadflax Linaria dalmatica
Diffuse knapweed Centaurea diffusa
Dyers woad Isatis tinctoria
Field bindweed Convolvulus arvensis
Hemp (marijuana) Cannabis sativa
Henbane, Black Hyoscyamus niger
Hoary cress, (Whitetop) Cardaria spp)
Horsenettle Solanum carolinense
Houndstongue Cynoglossum officinale
Johnsongrass Sorghum halepens
Jointed goatgrass Aegilops cylindrica
Leafy spurge Euphorbia esula
Matgrass Nardus stricta
Meadow knapweed Centaurea pratensis
Medusahead Taeniatherum caput-medusae
Milium Milium vernale
Musk thistle Carduus nutans
Orange hawkweed Hieracium aurantiacum
Oxeye daisy Chrysanthemum leucanthemum
Perennial pepperweed Lepidium latifolium
Perennial sorghum Sorghum almum
Perennial sowthistle Sonchus arvensis
Plumeless thistle Carduus acanthoides
Poison hemlock Conium maculatum
Puncturevine Tribulus terrestris
Purple loosestrife Lythrum salicaria
Quackgrass Agropyron repens
Rush skeletonweed Chondrilla juncea
Russian knapweed Centaurea repens
Scentless chamomile Matricaria perforata or M. milaceum
Scotch broom Cytisus scoparius
Scotch thistle Onopordum acanthium
Sericea Lespedeza Lespedeza cuneata
Silverleaf nightshade Solanum elaeagnifolium
Skeletonleaf bursage Ambrosia tomentosa
Spotted knapweed Centaurea maculosa
Squarrose knapweed Centaurea virgata
St. Johnswort Hypericum perforatum
Sulfur cinquefoil Potentilia recta
Syrian beancaper Zygophyllum fabago
Tansy ragwort Senecio jacobaea
Toothed spurge Euphorbia dentata
Wild oats Avena fatua
Wild proso millet Panicum miliaceum
Yellow hawkweed Hieracium pratense
Yellow starthistle Centaurea solstitialis
Yellow toadflax Linaria vulgaris