The current AOSS regulations are in addition to or a supplement to the 610 regulations. This and the continued existence of hundreds of GMPs makes it almost impossible for designers to navigate the maze of overlapping regs and policies and equally hard for VDH staff to review and regulate. SInce the AOSE regs are not in effect there is no regulatory standard for submissions, soil evaluations and there is absolutely no guidance or regulation dealing with the nearly 800,000 existing septic systems all nearing 40 years plus in age. A complete and thorough re-wirte with legislative changes is long overdue.