JF Brennan Company, Inc. ea La Crosse, Wis., e hatela pele haholo morerong oa ho chekoa ha Lake Redwood Minnesota.
Ho ea ka Redwood-Cottonwood Rivers Control Area (RCRCA), libeke tse tharo pele ho morero, JF Brennan e thehile sediment sa li-cubic mithara tse fetang 76,000 ho tloha Letšeng la Redwood, a ntse a tsamaea butle ho fihlela sepheo sa li-cubic yards tse 650,000.
"Ho qala bekeng ea la 16 Mots'eanong, Michael B. dredge e tla ea sebakeng se haufi le letamo mme e qale ho sebetsa e lebile nqa boroa mapheong a tebileng ho khutlisetsa letša le kanale ea Redwood River botebong ba eona ba pele," ho boletse RCRCA ntlafatsong. ."Bonyane maoto a 100 ho tloha letamong, hammoho le maoto a 25 ho tloha mabopong, lia hlokahala bakeng sa ts'ebetso ea ho phunya le litlhoko tsa tumello."
RCRCA e boetse e phaella ka hore metsi a litšila a tsoang Setsing sa Confined Dewatering (CDF), se tsejoang ka hore ke letamo la ho ntša metsi, se ile sa lokolloa lekhetlo la pele ka May 12. Boleng ba metsi a phallang bo behiloe leihlo ho netefatsa hore bo finyella litekanyetso tse lumelletsoeng tsa turbidity, phosphorus le tlhokahalo ea baeloji ea carbonaceous (CBOD).
