COASTAL SEDIMENT SAMPLES

Table 1. Results from coastal sediment samples collected by DOH during May 2024, in milligrams per kilogram (mg/kg).

Sediment samples were collected by DOH in accordance with DOH protocols.
DOH EAL: Hawaii DOH Environmental Action Level for screening. An entry of “—” means the analyte does not have an EAL.
Bolded numbers indicate exceedances of DOH’s EALs for unrestricted soils.
ND: Non-detect
1Screening values represent soil EALs for commercial/industrial land use and unrestricted land use obtained from DOH’s TGM EAL Surfer (Tier 1 EALs) search function (found here: Environmental Hazard Evaluation and Environmental Action Levels – HEER Office (hawaii.gov)) at the time of data release (Spring 2024).
2Additional duplicate and triplicate samples were collected at Kamehameha Iki Park and Kahekili (Airport) Beach for quality assurance/quality control purposes

Table 2. Results from coastal sediment samples collected by DOH during August 2024, in milligrams per kilogram (mg/kg).

Sediment samples were collected by DOH in accordance with DOH protocols.
DOH EAL: Hawaii DOH Environmental Action Level for screening. An entry of “—” means the analyte does not have an EAL.
Bolded numbers indicate exceedances of DOH’s EALs for unrestricted soils.
ND: Non-detect
1Screening values represent soil EALs for commercial/industrial land use and unrestricted land use obtained from DOH’s TGM EAL Surfer (Tier 1 EALs) search function (found here: Environmental Hazard Evaluation and Environmental Action Levels – HEER Office (hawaii.gov)) at the time of data release (Spring 2024).
2Additional duplicate and triplicate samples were collected at Kamehameha Iki Park and Kahekili (Airport) Beach for quality assurance/quality control purposes

Table 3. Results from coastal sediment samples collected by DOH during November 2024, in milligrams per kilogram (mg/kg).

Sediment samples were collected by DOH in accordance with DOH protocols.
DOH EAL: Hawaii DOH Environmental Action Level for screening. An entry of “—” means the analyte does not have an EAL.
Bolded numbers indicate exceedances of DOH’s EALs for unrestricted soils.
ND: Non-detect
1Screening values represent soil EALs for commercial/industrial land use and unrestricted land use obtained from DOH’s TGM EAL Surfer (Tier 1 EALs) search function (found here: Environmental Hazard Evaluation and Environmental Action Levels – HEER Office (hawaii.gov)) at the time of data release (Fall 2024).
2Additional duplicate and triplicate samples were collected at Shark Pit – Puamana and Kahekili (Airport) Beach for quality assurance/quality control purposes.

Table 4. Results from coastal sediment samples collected by DOH during February 2025 for metals, in milligrams per kilogram (mg/kg).

Sediment samples were collected by DOH in accordance with DOH protocols.
DOH EAL: Hawaii DOH Environmental Action Level for screening. An entry of “—” means the analyte does not have an EAL.
Concentrations higher than DOH EALs are shown in bold font.
ND: Non-detect
1Screening values represent soil EALs for commercial/industrial land use and unrestricted land use obtained from DOH’s TGM EAL Surfer (Tier 1 EALs) search function (found here: Environmental Hazard Evaluation and Environmental Action Levels – HEER Office (hawaii.gov)) at the time of data release (Winter 2025).
2Additional duplicate and triplicate samples were collected at Olowalu Surf Break and Kahekili (Airport) Beach for quality assurance/quality control purposes.

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