Draft Supplemental AIS Report Kamehameha Highway Guideway

Cultural Surveys Hawai‘i Job Code: WAIMALU 2
Results of Fieldwork
Terrestrial Faunal Remains Discussion: No terrestrial faunal remains were observed.
Sample Results: A 3.0 liter bulk sediment sample of Stratum II was collected between 2.25-2.95
mbs. The sample was wet-screened and contained no cultural material.
GPR Discussion: A review of amplitude slice maps showed no linear features which might have
indicated the presence of utilities. Reflectivity varied throughout the grid and increased with
depth. A transition from lower reflectivity to higher reflectivity was observed at approximately
0.50 mbs (see Appendix B: Figure 31).
GPR depth profiles for PRS-5 identified horizontal banding, commonly associated with
stratigraphic layering, throughout the survey area (see Appendix B: Figure 32). This banding
corresponded to variations of density and chemical composition within fill deposits. The profile
also indicated a change in reflectivity which occurred at around 0.50 mbs. No utilities were
observed in the profile. The maximum depth of clean signal return was approximately 1.0 mbs.
Summary: PRS-5 was excavated to a maximum of depth of 2.95 mbs, and beneath the water
table at 2.85 mbs. The stratigraphy of PRS-5 consisted of fill strata (Strata Ia-Ig) overlying a
natural clay loam (Stratum II). Stratum II generally conformed to the USDA soil survey
designation of Honouliuli clay (HxA). No archaeological cultural resources were observed
within PRS-5.
Supplemental Archaeological Inventory Survey, HHCTCP Section 2, Pearlridge Station, Waimalu Ahupua‘a, ‘Ewa, O‘ahu 36
TMK: (1) 9-8-009:017 and (1) 9-8-010:002