Instructions:
This checklist must be submitted with a Geological Assessment and completed, signed, and stamped by the licensed
professional(s) who prepared the Geological Assessment for review by Mason County pursuant to the Mason County
Resource Ordinance. If an item is found not applicable, the report should explain the basis for the conclusion.
Note: Unless specifically documented, this report does not provide compliance to the International Residential Code Sections
R403.1.7 for foundations on or adjacent to slopes, Section R403.1.8 for expansive soils or section 1808.7.1 of the International
Building Code Section for Foundations on or adjacent to slopes.
Applicant/Owner ___________________________________ Parcel # _________________________________
Site Address ________________________________________________________________________________
(1) A discussion of geologic conditions in the general vicinity of the proposed development, with geologic unit
designation based on referenced maps.
Located on page(s)
(2) (a) A discussion of the ground water conditions at the site,
Located on page(s)
(b) A discussion of the estimated depth to water,
Located on page(s)
(c) A discussion of the quantity of surface seepage,
Located on page(s)
(d) A discussion of the upslope geomorphology,
Located on page(s)
(e) A discussion of location of upland waterbodies and wetlands.
Located on page(s)
(3) The approximate depth to hard or dense competent soil, e.g. glacial till or outwash sand.
Located on page(s)
(4) A discussion of any geomorphic expression of past slope instability (presence of hummocky ground or ground
cracks, terraced topography indicative of landslide block movement, bowed or arched trees indicating
downslope movement, etc.).
Located on page(s)
(5) A discussion of the history of landslide activity in the vicinity, as available in the referenced maps and records.
Located on page(s)
(6) An opinion on whether the proposed development is within the landslide hazard area or its associated buffer or
setback and the potential for landslide activity at the site in light of the proposed development.
Located on page(s)
(7) A recommendation by the preparer whether a Geotechnical Report should be required to further evaluate site
conditions and the proposed development of the subject property.