Laserfiche WebLink
Compost Products <br />• Two compost products that provide additional organic material and appear suited <br />for use at the Keenesburg site are Biocomp and Premium 3. The Biocomp <br />product is produced from non-hazardous liquid bio-solids and bulking agents with <br />a maximum pH of 7. This product meets EPA requirements (40 CFR 503-13) for <br />unrestricted use and distribution (see sample analysis Appendix R-5). The <br />Premium 3 product is produced from dairy manure and bedding with a maximum <br />pH of 9. Based on conversations with the manufacturers, Biocomp is <br />recommended for use on both currently seeded areas and unseeded areas. For <br />unseeded areas, the manufacturer also recommends the Premium 3 product. These <br />products can be applied with a manure spreader and the recommended application <br />rate is variable for currently seeded areas up to 33 tons per acre for unseeded <br />azeas. The recommended application practice for the unseeded areas is a surficial <br />application with subsequent disking imo the top six inches of soil prior to seeding. <br />For previously seeded and already established areas the disking step would be <br />eliminated. <br />Irrigation <br />No irrigation is proposed for use at the Keenesburg Mine. <br />• Pest and Disease Control Measures <br />CEC will initiate appropriate pest, weed, and disease control measures at the site in <br />accordance with Colorado Division of Minerals and Geology and SCS regulations and <br />guidelines should pests, weeds, or plant diseases be identified on site which would <br />significantly impact the success of reclamation at the Keenesburg Mine. Currently, the <br />site is inspected at least quarterly by mine personnel or qualified consultants who are <br />evaluating the revegetation. To date, no infestations of pests or weeds have been <br />identified. <br />Grazine <br />Grazing will be prohibited during the first two years of vegetation establishment on <br />reclaimed areas. Grazing may be allowed on revegetated areas following the second <br />growing season, based on recommendations ofthe local SCS office or local soil <br />conservation district, to enhance development of a mature warm season dominated <br />vegetation community. Grazing will not be allowed to interfere with vegetation sampling <br />for monitoring or bond release purposes, and eligible areas <br />(including the reference azea) will not be grazed during the growing season prior to <br />sampling. <br />. CEC believes that carefully managed grazing will improve the revegetated areas in the <br />following ways: <br />115c 04/01 <br />