Keywords: Corps fights invasive weeds.jpg en Sacramento District park ranger Jacqui Zink cleans a weed barrier from Martis Creek Lake in Truckee Calif during a removal cleaning and replacement project May 19 2012 The gas-permeable barriers kill invasive plants by blocking sunlight but don't disturb other plant and animal species The https //en wikipedia org/wiki/United_States_Army_Corps_of_Engineers U S Army Corps of Engineers and Tahoe Divers Conservancy have teamed up to sustainably eradicate invasive https //en wikipedia org/wiki/Myriophyllum milfoil at the lake managed by the Corps ™ Sacramento District http //pressurewasherjudges com Pressure washer judges https //en wikipedia org/wiki/United_States_Army U S Army photo by John Prettyman/Released 2012-05-19 11 02 59 https //www flickr com/photos/sacramentodistrict/7302485514/ U S Army Corps of Engineers Sacramento District other versions PD-USGov United States Army Corps of Engineers Files from U S Army Corps of Engineers Sacramento District Flickr stream |