Ke holomua nui nei ʻo JF Brennan Company, Inc. o La Crosse, Wis., i ka papahana dredging Lake Redwood ma Minnesota.
Wahi a ka Redwood-Cottonwood Rivers Control Area (RCRCA), ʻekolu pule i loko o ka papahana, ua huki ʻo JF Brennan ma luna o 76,000 cubic iwilei o ka sediment mai Lake Redwood, e neʻe mau ana i ka pahuhopu o 650,000 cubic iwilei.
"E hoʻomaka ana i ka pule o Mei 16, e neʻe ka Michael B. dredge i kahi kokoke i ka dam a hoʻomaka e hana ma ka ʻaoʻao hema ma nā ʻoki hohonu loa e hoʻihoʻi i ka loko a me ke kahawai ʻo Redwood River i kona hohonu hohonu," wahi a RCRCA i ka hōʻano hou. ."ʻO ka liʻiliʻi o 100 kapuaʻi mai ka dam, a me 25 mau wāwae mai nā kahakai, koi ʻia no nā hana dredging a me nā koi ʻae."
Ua hoʻohui pū ʻia ʻo RCRCA, ua hoʻokuʻu ʻia ka effluent discharge mai ka Confined Dewatering Facility (CDF), i ʻike ʻole ʻia ʻo ka loko wai dewatering, no ka manawa mua ma Mei 12. Nānā ʻia ka maikaʻi o ka wai hoʻokuʻu ʻia e hōʻoia i ka hoʻokō ʻana i nā kūlana i ʻae ʻia no ka turbidity, phosphorus a me koi olaola kalapona (CBOD).
