Washington Administrative Code
Title 246 - Health, Department of
SEWER SYSTEMS
Chapter 246-272B - Large on-site sewage system regulations
Part 4 - ENGINEERING REQUIREMENTS
Section 246-272B-04300 - Monitoring and reporting plan

(1) Constituents of the sewage or effluent that must be tested to assure that treatment components are meeting treatment level requirements, and to monitor groundwater or surface water:

(2) Values or ranges of values that must be met for the constituents listed in subsection (1) of this section;

(3) Sampling frequency, including time and day samples will be taken. Samples must be taken when maximum concentrations of contaminants are expected;

(4) Procedures for decontaminating sampling equipment and sample ports;

(5) Field test methods;

(6) Sampling methods;

(7) Well purging methods, if applicable;

(8) Handling and labeling of containers;

(9) Holding times;

(10) Quality assurance and quality control procedures;

(11) Transport of samples;

(12) List of equipment that will be used for sampling and field testing;

(13) Test method for each constituent;

(14) Monitoring that will be performed by a proprietary treatment manufacturer or their agent as described in WAC 246-272B-04100(1)(g)(v);

(15) Map or schematics showing any monitoring wells and all sample points;

(16) Plans and construction specifications for monitoring wells, monitoring points, and piezometers;

(17) Response plan for abnormal or elevated sampling results which may include additional sampling, notification to the department, treatment, or other appropriate action;

(18) Any report forms;

(19) Procedures for submitting required monitoring results to the department; and

(20) Procedures and schedules for recordkeeping.