2021-09-09_REVISION - M2004044 (10)

Home Browse Search

2. Weed Species to be Controlled Aggregate Industries- WCR, Inc. (AI) will control those plant species identified by current State statute or regulation as noxious. Plant pests are defined as those biological species that significantly predate the desirable vegetation of the project site. 3. Weed Management Actions • Monitoring The presence of noxious weeds and plant pests will be monitored annually, at which time weed control efforts will be reviewed and specific management measures adjusted as necessary. Management measures will be undertaken where a single or combination of noxious weed species or plant pests comprises or shows a deleterious effect to the live vegetation cover in the mitigation area as determined by observations of a revegetation or weed control specialist. • Control Measures Al will contract with a licensed herbicide applicator/weed management specialist to implement the weed management plan. Noxious weeds or plant pests may be controlled by any combination of cultural, mechanical, biological, or chemical measures. Weed control measures will be developed specifically for the noxious weed species encountered and in consultation with Adams County, local weed control district and/or the Colorado State Department of Agriculture as necessary. Topsoil slated for removal from the site will be treated with a long- term residual pre-emergent or post-emergent herbicide to reduce noxious weeds prior to removal. Al will conduct an aggressive mowing program the first year following revegetation, withholding herbicide use until the following year to avoid damaging new seedlings. Herbicides will be applied by a licensed commercial applicator. Stockpiles that remain undisturbed for more than one season will be seeded with a temporary cover crop. Where noxious weed control measures cause disturbance to the remaining vegetation, seeding or planting of desirable replacement vegetation will occur during the first normal planting or seeding season after weed control measures have been implemented and deemed successful. • Contact Person(s) During mining, the Operations Manager at the site will be the contact person for weed control. When mining is completed, the weed control contact person will be Aggregate Industries' operations staff at the corporate office in Golden, Colorado. Aggregate Industries will be responsible for weed control until the site is released by DRMS. At that time, responsibility for weed control will transfer to the land owner. The grass seed mix, composed of a long lasting and regenerating native upland seed mixture, will be used in upland areas where no future irrigated/dryland agriculture or other development is anticipated. The native open space seed mix recommendation is presented below. Aggregate Industries—Tucson South Amendment—MLRB 112 Permit Application Exhibit E-7