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6. Offsite Use <br />All material will be used within the Rocky Mountain Fen Research Project Area. No material will be sold or <br />put to use outside of the designated receiver site on the Hayden Homestead. <br />7. Approximate aerial extent <br />The extraction site on the Hallenbeck Ranch will be roughly equal to the size of the restoration site on the <br />Hayden Homestead in order to accommodate the transplantation. Approximately 3 /4 of an acre of peat soil <br />will be excavated for transplantation to the receiver site on the Hayden Homestead. <br />8. Approximate extraction depth <br />The study calls for extraction of the surficial peat layer to an approximate depth of 40 cm (18 ") in depth. <br />9) Approximate volume <br />Approximately 1850 cubic yards of peat soils would be moved from the point of extraction to the receiver <br />site. <br />10) Use of explosives <br />No explosives will be used in the project. <br />11) Exposure of tributary ground water <br />The peat soils will be extracted from an existing wetland. Minimal additional groundwater exposure is <br />anticipated on a seasonal basis if the depth of extraction intercepts groundwater. <br />12) Compensation <br />The City of Aurora will receive no compensation, monetary or in -kind, for materials extracted from the <br />Hallenbeck Ranch site. No earth materials will be transported outside of the Project Area or be made <br />available for sale. <br />13) Site Reclamation <br />The study design calls for research into techniques for reclamation of the harvested site as an integral <br />element of the research. Study design and performance criteria will be prepared by Dr. Brad Johnson, PWS, <br />as part of the project. Seeds and rhizomes of native species will be used in the revegetation of the site, and <br />monitoring and control of noxious weeds will be part of the study criteria until such time as the native <br />species take hold. <br />14) Permits <br />The U.S. Army Corps of Engineers (Corps) has determined that the extraction of peat soils from private <br />properties does not require a Section 404 permit, and that minor discharges of fill during the construction <br />process would be considered diminimus (Exhibit 1). The Corps will be a participant in the study and will <br />monitor its construction for compliance. <br />