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).
Any brook trout taken today along the south shore are stocked fish which do not reproduce. Preferring clear, cool water of around 40-55 degrees, it is near impossible to have stocked fish holdover from year to year since few of the bodies of water here on the south shore can keep that environment throughout the year.