A left shift is a phrase used to note that there are a high number of young, immature white blood cells present. Most commonly, this means that there is an infection or inflammation present and the bone marrow is producing more WBCs and releasing them into the blood before they are fully mature.
the gas line should be at least 30 inches deep. But may vary according to how strict your local safety codes are for preventing homeowners from hitting the line while digging in a tree or fence post. Call a heating/plumbing contractor.
If you bury the conduit 36 inches deep, you will exceed the requirements of NFPA 70 (aka the National Electric Code) as given in table 300.5, for direct burial of cable and conduit listed for that purpose, under any location. But you didn't mention where you are, so we don't know if NFPA 70 even applies to you.