COASTAL SEDIMENT SAMPLES

Table 1. Results from coastal sediment samples collected by DOH during May 2024, in milligrams per kilogram (mg/kg).
Parameters DOH EAL:
Commercial/ Industrial
Direct Exposure1		 DOH EAL:
Unrestricted Soil1		Hanakao’o ParkMala WharfPuunoa (Baby)
Beach 2		Kamehameha Iki ParkShark Pit - PuamanaLauniupoko Beach
(Nearshore)		Launiupoko Beach
(Surf Break)		Olowalu Surf BreakKahekili (Airport)
Beach2
basebasebaseduplicatetriplicatebasebasebasebasebasebaseduplicatetriplicate
Aluminum——564014300599055705480507012000990083006230320031202980
Antimony826.3NDNDND*NDNDNDNDNDNDNDND*ND*ND*
Arsenic952417.813.121.118.817.413.424.222.822.26.4215.517.420.8
Barium250010007.097.245.855.85.925.218.465.916.274.466.135.886.57
Beryllium15031NDND*NDNDNDNDNDNDNDND*NDNDND
Cadmium1917NDNDNDNDNDNDNDNDNDNDNDNDND
Chromium1100110023.843.520.316.314.939.739.93927.839.213.414.517.1
Cobalt808013.521.69.857.196.8819.61520.114.821.34.585.096.29
Copper25006308.3627.515.38.399.2310.919.721.617.520.32.93.663.06
Iron——16700300001460012600138002620026200295002280027700892086009080
Mercury614.7NDNDNDNDNDNDNDNDNDNDNDND*ND*
Molybdenum100078ND*ND*ND*ND*ND*NDNDNDNDND*ND*ND*ND*
Nickel41041015619410770.659.324494.516012123754.557.674.8
Lead8002001.64.174.7844.082.272.232.371.91.22ND*ND*1.22
Selenium1000781.231.971.411.261.321.442.32.542.11.72ND*ND*ND*
Silver100078NDNDNDNDNDNDNDNDNDNDNDNDND
Titanium——78520808667897609111880157013901210403375356
Thallium100.78NDNDNDNDNDNDNDNDNDNDNDNDND
Vanadium77077030.372.131.926.428.934.465.974.16045.7ND*ND*ND*
Zinc2500100022.654.829.123.724.230.234.141.732.5371111.913.5

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).
Parameters DOH EAL:
Commercial/ Industrial
Direct Exposure1		 DOH EAL:
Unrestricted Soil1		Hanakao’o ParkMala WharfPuunoa (Baby)
Beach		Kamehameha Iki Park 2Shark Pit - PuamanaLauniupoko Beach
(Nearshore)		Launiupoko Beach
(Surf Break)		Olowalu Surf BreakKahekili (Airport)
Beach2
basebasebasebaseduplicatetriplicatebasebasebasebasebaseduplicatetriplicate
Antimony 826.3NDNDNDNDNDNDNDNDNDNDNDNDND
Arsenic 952414.98.6617.818.821.519.120.720.5197.3612.712.413.5
Barium 250010005.275.825.246.196.926.247.25.724.954.544.634.825.13
Beryllium15031NDNDNDNDNDNDNDNDNDNDNDNDND
Cadmium 1917NDNDNDNDNDNDNDNDNDNDNDNDND
Chromium 1100110024.641.31831.638.736.737.933.328.130.518.116.218.9
Cobalt 808013.218.98.1814.918.318.515.91915.618.27.036.197.53
Copper 25006306.4422.98.312.915.113.617.31814.518.6NDNDND
Iron——14400352001460022100248002540027500324002350025600890095209410
Lead 8002002.664.134.762.172.42.812.122.332.051.41NDND1
Mercury614.7NDNDNDNDNDNDNDNDNDNDNDNDND
Molybdenum100078NDNDNDNDNDNDNDNDNDNDNDNDND
Nickel 41041013214962.110914115882.113193.2151847490.4
Selenium100078ND1.22ND1.161.321.181.341.541.21.17NDNDND
Silver100078NDNDNDNDNDNDNDNDNDNDNDNDND
Thallium100.78NDNDNDNDNDNDNDNDNDNDNDNDND
Vanadium 770770ND56.526.742.550.545.254.154.445.539.3NDNDND
Zinc 2500100019.646.123.226.431.829.832.234.927.529.49.429.5610.3

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).
Parameters DOH EAL:
Commercial/ Industrial
Direct Exposure1		 DOH EAL:
Unrestricted Soil1		Hanakao’o ParkMala WharfPuunoa (Baby)
Beach		Kamehameha Iki ParkShark Pit - Puamana2Launiupoko Beach
(Nearshore)		Launiupoko Beach
(Surf Break)		Olowalu Surf BreakKahekili (Airport)
Beach2
basebasebasebasebaseduplicatetriplicatebasebasebasebaseduplicatetriplicate
Antimony 826.3NDNDNDNDNDNDNDNDNDNDNDNDND
Arsenic 952417.59.0322.916.622.122.922.221.3249.510.811.511.6
Barium 250010005.695.7565.326.756.996.744.955.894.384.835.085.35
Beryllium15031NDNDNDNDNDNDNDNDNDNDNDNDND
Cadmium 1917NDNDNDNDNDNDNDNDNDNDNDNDND
Chromium 1100110025.143.6243140.740.439.73435.927.813.715.715.4
Cobalt 808013.921.211.816.617.217.716.719.519.616.44.085.285.05
Copper 25006306.1824.29.511.516.516.116.516.618.520.3NDNDND
Iron——13600319001040017900221001910017100320002710029200450061405120
Lead 8002001.674.595.951.932.562.732.562.73.052.03NDND1.06
Mercury614.7NDNDNDNDNDNDNDNDNDNDNDNDND
Molybdenum100078NDNDNDNDNDNDNDNDNDNDNDNDND
Nickel 41041011215579.812187.293.287.2105103904048.251.6
Selenium100078ND1.371.131.151.61.631.581.591.831.51NDNDND
Silver100078NDNDNDNDNDNDNDNDNDNDNDNDND
Thallium100.78NDNDNDNDNDNDNDNDNDNDNDNDND
Vanadium 77077029.662.437.438.357.755.956.551.557.841.7NDNDND
Zinc 2500100018.847.429.323.930.631.931.131.93427.77.097.3839.2

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.

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