The NFPA 70E Standard details multiple levels of Hazard Risk Categories (HRC) [see table 1.1], also called Levels. The greater the risk: the higher the HRC. Arc Rating is the factor that indicates which HRC is necessary, and can be measured in either ATPV or EBT.
The optimal pH range for brook trout appears to be 6.5-8.0,with a tolerance range of 4.0-9.5.Brook trout occur in waters with a wide range of alkalinity and specificconductance, although high alkalinity and high specific conductance usuallyincrease brook trout production (Cooper and Scherer 1967).
Find out information about each fish in Colorado. Once youv'e made a selection, check out what rivers they currently inhabit and get tips on catching them! Brook Trout were brought to the state of Colorado in 1872. They are a dark colored fish with both red and white spots. Biggest Catch: The record Brook Trout caught in Colorado was in 1947, weighing 7 lbs, 10 oz.