My Neighbour Has A Septic Holding Tank But No Field, The Vent Has Been Run Over To The Edge Of The Property By By Patio. The Tank May Be The Required Distance From The Property Line But The Vent Is Right On The Property Line About Nine Feet In The Air And Above A Patio Area. Shouldn't A Vent Meet The Same Setback Rules As The Tank? This Venting Makes The Patio Unuseable On Bad Days When The Tank Is Full Or Empty. Suggestions On The Issue.