8.1. SR 03-18-2013 - Laserfiche WebLink

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Improvements to the biosolids handling facility would include provisions to pump sludge to Great River Energy(GRE)for processing. In return, GRE would require the Elk River WWTF to take clarifier water from GRE for treatment. Clarifier flows from GRE would be approximately 150,000 gpd which is fairly insignificant at the future design flows for the Elk River WWTF. Since GRE would accept untreated biosolids,the Elk River WWTF could abandon the existing biosolids treatment process and utilize the existing infrastructure to support pumping of biosolids to GRE. This would include addition of an aeration system in the existing digester and sludge storage tank so they could be used as aerated storage for biosolids that are to be pumped to GRE. Pumping and piping modifications would also be required to pump biosolids to GRE. c. Explain the project purpose; if the project will be carried out by a governmental unit, explain the need for the project and identify its beneficiaries. The purpose of the project is to increase the treatment capacity of the Elk Rlver(WWTF)to accommodate residential and commercial growth. d. Are future stages of this development including development on any outlots planned or likely to happen? ® Yes ❑No If yes, briefly describe future stages, relationship to present project, timeline and plans for environmental review. Further expansion of the facility may be required in the next 10-15 years if flows increase to the facility. Any new construction would stay within the current property boundaries of this project. The environmental review process will be initiated when further facility upgrades are necessary. e. Is this project a subsequent stage of an earlier project? ® Yes ❑ No If yes, briefly describe the past development, timeline and any past environmental review. Original construction of the wastewater treatment facilty was done in 1977 with the most recent upgrade coming in 2005. The environmental review for the 2005 improvements concluded that the facility would not have any significant impacts on the water quality of the receiving water. It also concluded that there were no endangered or threatened species that were known to be located near the Elk River WWTF. 5. Project magnitude data Total Project Area(acres) 3 acre or Length (miles) Number of Residential Units: Unattached Attached maximum units per building Commercial/Industrial/Institutional Building Area (gross floor space): total square feet Indicate area of specific uses (in square feet): Office Manufacturing Retail Other Industrial Warehouse Institutional Light Industrial Agricultural Other Commercial (specify) Building height If over 2 stories, compare to heights of nearby buildings 6. Permits and approvals required. List all known local, state and federal permits, approvals and financial assistance for the project. Include modifications of any existing permits, governmental review of plans, and all direct and indirect forms of public financial assistance including bond guarantees, Tax Increment Financing and infrastructure. Unit of government Type of application Status MPCA NPDES Permit Not Submitted MPCA Facility Plan Approval Submitted MPCA Plans/Specifications Approval Not Submitted MPCA General Storm Water Permit Not Submitted Sherburne County Conditional Use Permit Not Submitted 7. Land use. Describe current and recent past land use and development on the site and on adjacent lands. Discuss project compatibility with adjacent and nearby land uses. Indicate whether any potential conflicts involve environmental matters. Identify any potential environmental hazards due to past site uses, such as soil contamination or abandoned storage tanks, or proximity to nearby hazardous liquid or gas pipelines. The improvements would be done on the site of the existing facility. No potential environmental hazards are know at this time. www.pca.state.mn.us 651-296-6300 800-657-3864 TTY 651-282-5332 or 800-657-3864 • Available in alternative formats wq-wwtp2-20 • 8117112 Page 3 of 7