Comp Plan 1978-1980 FILE #2 - Laserfiche WebLink

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- 2 Sludge processing is currently accomplished by anaerobic digestion. Ultimate sludge disposal is either hauled to the Metropolitan Plant interceptor system or land spreading depending on various environmental factors. Currently the MWCC is examining ultimate disposal of sludge from each of its treatment plants. However, no recommendations regarding the future handling of sludge have been made for the Anoka facility. The current NPDES permit is for secondary treatment. Based on the modeling for the Mississippi River, which was not available at the time of the previous studies,secondary treat- ment for the Anoka service area is adequate to meet the proposed water quality standards. The plant is currently in compliance with its NPDES permit. Also with EPA's new position on pretreatment of industrial wastes, to eliminate the discharge of heavy metals, toxics or potential toxic materials from industries, coming in the near future, the affect from the Anoka discharge on the Minneapolis water intake will be insignificant even at periods of low flow in the river. Also Federal Cartridge who was the primary discharger of metals to the Anoka plant has undertaken a program to clean up its discharge to acceptable levels. Champlin The current river crossing from Champlin to Anoka is not adequate 'to serve the entire population of Champlin therefore a new river crossing has been proposed as part of the alternative to treat the future flows in Anoka. Also there has been documented cases of septic tank failures in the central and southern portion of Champlin which must be corrected. Metropolitan Plant Deatails regarding the Metropolitan Plant Will be discussed with the central study area portion of this plan. The discussion here will cover the existing interceptor system which serves the cities located in this study area. Andover There is adequate sewer service to the city for its expected growth through the year 2000 in' the Coon Rapids interceptor. However, a small portion of the City in the Rum River watershed is receiving service by pumping flows back into this interceptor. When an outlet for Ramsey is provided in northern Anoka,capacity for this section of Andover will also be designed. ~aple Grove There is adequate capacity in the existing metropolitan system to accommodate the projected flows from Maple Grove throughout the planning period. However, if development occurs in the Elm Creek watershed the City would be required to pump the flows back into the existing .~ystem.