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velocities. The channel will be stabilized with vegetation and,.:when necessary, more.,, <br />aggressive erosion control materials such as riprap or concrete .mattresses. In addition to <br />_ other control measures; the stormwater channel will pass through the existing Eagleview <br />Detention Pond. immediately upstream of the site. This detention basin will provide <br />additional stormwater quality management for runoff prior to discharge into the <br />groundwater lake. <br />Financial Warranty. A change in the current financial warranty is- not proposed for this <br />technical revision. The proposed b"ackfilling, grading, topsoiling, and revegetation <br />changes to the original reclamation plan and map contained in this technical revision are. <br />minimal. Changes only include the excavation and armoring of the. siormwater channel <br />outlet. In addition, the Work included 'in the technical revision is proposed by, and. will be <br />performed by, the City of Greeley. The financial responsibility will also: be assumed by <br />the City of Greeley. Although not directly applicable to this situation; <br />HERB Rule 4.1:'.2 (2): states that no financial warranty -shall be, required where the <br />operator is a unit 'of municipal or county government. <br />- Use of Off--Site Backfill Material. As stated above, the use of off-site. backfill material. <br />will only affect the eastern most lake and associated shoreline. The discussion below - <br />addresses the. requirements in MLRB Rule 3.1.5 (9). for fill generated outside. the <br />approved permit area. An affidavit certifying that the material is clean and inert is <br />attached: <br />The off-site,material _ would. be generated from excavation of the stormwater channel <br />directly south and adjacent to.. the site. This area is currently used for agriculture and the <br />material. is expected fo-be; clean and inert and suitable for structural fill. The quantity of <br />material entering the site would.be less than 20,000 cubic yards. Although an abandoned, <br />buried gas well collector pipeline has' been identified crossing the excavation area near <br />F Street, no other pipelines or storage tanks are known to be present. A search through <br />the HMWMD database for solid and hazardous, waste sitesindicated that none of these' _ <br />sites exist within one mile of the excavation area. In addition; the contractors moving the <br />material will be instructed to stop excavation if the material appears off-color, produces a <br />suspicious odor, or contains excessive amounts of debris., <br />The excavation and transport of material to the site is proposed for August 2003 through <br />August 20,04. The material. will be used to create the bank and shoreline of the eastern <br />groundwater lake. Placement of the material and grading will be done to control erosion . <br />and provide a stabilized shoreline. The material will be placed in lifts and compacted in . <br />the same manner, as described in the current.. reclamation plan... Final grading and <br />reseeding will be done as soon as possible after grading and topsoiling have been <br />completed.