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).
Trout need cold (or at least cool), clean, high quality water with plenty of oxygen. They need either sufficient flow or sufficient volume of water to maintain the quality of the water. Your pond needs to maintain a temperature of at most 65 degrees F at the bottom of the pond in mid summer. Your pond needs sufficient depth so that in winter ...