12VAC5-630-450D5 Defines setbacks to proposed onsite sewage disposal systems when the annular space can't be filled. This is defining the setback to an onsite sewage disposal system, if Chapter 630 is not supplemental to Chapter 610, wouldn't Chapter 610 be the controlling Chapter when designing an onsite sewage disposal system? Since there are no setbacks to abandoned wells in Chapter 610, how would a setback in Chapter 630 control a setback in Chapter 610? For an example, they are proposing siting a dispersal area 20' from an abandoned bored well that has no records of a grout and they only filled the inner well area, would I then deny an onsite sewage disposal application based off codes in Chapter 630?