2023 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units — Rules

2022 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units–Rules

2020 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units — Rules

2019 Washington Code 79A.60.550

2018 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units — Rules

2016 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units–Rules

2015 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units–Rules

2014 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units — Rules

2013 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units — Rules

2009 Washington Code 79A.60.550 – Development by department of ecology of design, installation, and operation of sewage pumpout and dump units — Rules