RCW 86.09.403: Assessments—Surveys, investigations to determine classification and benefits.

In determining the classification of said lands and their relative percentages of benefits, as herein provided, said board of appraisers shall consider the benefits of every kind accruing to said lands, as aforesaid, and shall make such investigation and surveys of the same as said board of appraisers shall deem necessary. The board of appraisers shall also examine and consider the data and records of the commission which fixed the boundaries of the district.