Ụlọ ọrụ JF Brennan, Inc. nke La Crosse, Wis., na-enwe ọganihu dị ukwuu na oru ngo Dredging Lake Redwood na Minnesota.
Dị ka Redwood-Cottonwood Rivers Control Area (RCRCA) si kwuo, izu atọ n'ime ọrụ ahụ, JF Brennan ewepụla ihe karịrị 76,000 cubic yad nke sedimenti site na Lake Redwood, na-aga n'ihu na ebumnuche nke 650,000 cubic yards.
"Malite n'izu nke Mee 16, Michael B. dredge ga-abanye n'ọnọdụ dị nso na mmiri mmiri ahụ wee malite ịrụ ọrụ n'akụkụ ndịda na mbelata kacha njọ iji weghachi ọdọ mmiri na ọwa Redwood n'ime omimi mbụ ya," ka RCRCA kwuru na mmelite ahụ. ."Opekempe nke 100 ụkwụ site na mmiri mmiri ahụ, yana 25 ụkwụ site n'ikpere mmiri, ka achọrọ maka ịrụ ọrụ nbipu na ikike ikike."
RCRCA gbakwụnyere na a na-ewepụta ihe na-esi na Confined Dewatering Facility (CDF), nke a na-akpọ ọdọ mmiri mmiri na-ekpo ọkụ, na nke mbụ ya na May 12. A na-enyocha àgwà mmiri na-agbapụta iji hụ na ọ na-agbaso ụkpụrụ ndị a kwadoro maka turbidity, phosphorus na. Achọ carbonaceous biological demand (CBOD).
