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If a significant invasion of noxious weeds occurs after seeding, the weeds will be mowed before
<br /> they can go to seed. The areas will be mowed periodically for additional control as needed.
<br /> Mechanical control will be used as a first priority. Chemical methods will only be used if no
<br /> other alternative produces acceptable results.
<br /> Periodic inspection for noxious weeds, at least once a year early in the season, will be done. The
<br /> weed inspection will search for not only the expected species but also any new List A or B
<br /> species introductions. It is likely that non-noxious and List C species will also be found. Non-
<br /> noxious weeds, which are often native invaders, will also be controlled to the extent practicable.
<br /> List C noxious species are problematic but are usually not as serious as List B species. List B
<br /> species in Colorado and utilized for Weld County weed management include: Absinth
<br /> wormwood, Black henbane, Bouncingbet, Bull thistle, Canada thistle, Chinese clematis,
<br /> Common tansy, Common teasel, Corn chamomile, Cutleaf teasel, Dalmatian toadflax, Dame's
<br /> rocket, Diffuse knapweed, Eurasian watermilfoil, Hoary cress, Houndstongue, Jointed goatgrass,
<br /> Leafy spurge, Mayweed chamomile, Moth mullein, Musk thistle, Oxeye daisy, Perennial
<br /> pepperweed, Plumeless thistle, Quackgrass, Russian knapweed, Russian-olive, Salt cedar,
<br /> Scentless chamomile, Scotch thistle, Spotted knapweed, Spurred anoda, Sulfur cinquefoil,
<br /> Venice mallow,Wild caraway, Yellow nutsedge, and Yellow toadflax.
<br /> All List A species must be eradicated by law. These weeds include African rue, Bohemian
<br /> knotweed, Camelthorn, Common crupina, Cypress spurge, Dyer's woad, Elongated mustard,
<br /> Giant knotweed, Giant salvinia, Hydrilla, Japanese knotweed, meadow knapweed, Mediterranean
<br /> sage, Medusahead, Myrtle spurge, Orange hawkweed, Purple loosestrife, Rush skeletonweed,
<br /> Squarrose knapweed, Tansy ragwort, and Yellow starthistle. The current complete list of
<br /> noxious weed species and local management plans is available from the Weld County Weed
<br /> Division.
<br /> Water—General
<br /> No groundwater is expected to be encountered in the mining and therefore groundwater in the
<br /> area should not be affected. Groundwater is not expected to be encountered during mining and
<br /> the deposit will be dry mined. Mining will occur within 200 feet of the Lake Canal Ditch,
<br /> however, depth of mining will not reach the elevation of the ditch and intercepting ditch seepage
<br /> is not anticipated.
<br /> The only water used on-site for production will be for dust control. Water for dust control will
<br /> be trucked to the site from other locations. Therefore, no new water demands will occur on the
<br /> proposed Harmony Gardens Site.
<br /> No irrigation will be used in establishing the vegetation, so no water rights are required for those
<br /> purposes. No water storage will occur in the pit.
<br /> To minimize the effect on the prevailing hydrologic balance, the operator shall:
<br /> a. Comply with all applicable Colorado water laws.
<br /> b. Comply with all applicable Federal and State water quality laws and regulations.
<br /> c. Comply with all Federal and State requirements for dredge and fill.
<br /> d. Perform all work to minimize erosion and sediment transport.
<br /> Harmony Gardens Site
<br /> DRMS Limited Impact 110 Permit Application Page 14
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