The criterion level, often abbreviated as Lc, is the steady noise level permitted for a full eight-hour work shift. This is 85 dB(A) in most jurisdictions, but it is 90 dB(A) in Quebec and 87 dB(A) for organizations that follow the Canadian federal noise regulations.
Royal Catchfly (Silene regia) This striking plant may grow as high as five feet, with bright red flowers. It flowers from May through September, and can be seen in remnant prairies and open woods. In Missouri, it is known only in the Ozarks.
What is the Ozark Trail? The Ozark Trail is nearly 400 miles of trail that winds through the Missouri Ozarks, the result of an idea conceived in 1977 to run a trail from St. Louis to the Arkansas border and eventually connect with the Ozark Highlands Trail in Arkansas to create a 700-mile thru-trail.