Angel Island - Fort McDowell
During the Spanish–American War the island served as a discharge depot for returning troops. It continued to serve as a transit station throughout the first half of the 20th century, with troops engaged in World War I embarking and returning there.
During World War II the facilities on Angel Island were expanded. Fort McDowell was used as a detention station for Japanese, German and Italian immigrant residents of Hawaii arrested as potential fifth columnists (despite a lack of supporting evidence or access to due process). These internees were later transferred to inland Department of Justice and Army camps. Japanese and German prisoners of war were also held on the island. The army decommissioned the military post in 1947. In 1954 a Nike missile station was installed on the island. The missile magazines were constructed above Point Blunt on the island's southeast corner, and the top of Mount Ida (now Mount Caroline Livermore) was flattened to make way for a helipad and the associated radar and tracking station. The missiles were removed in 1962, when the military left the island. The missile launch pad still exists, but the station atop Mount Caroline Livermore was restored to its original contours in 2006.
During World War II the facilities on Angel Island were expanded. Fort McDowell was used as a detention station for Japanese, German and Italian immigrant residents of Hawaii arrested as potential fifth columnists (despite a lack of supporting evidence or access to due process). These internees were later transferred to inland Department of Justice and Army camps. Japanese and German prisoners of war were also held on the island. The army decommissioned the military post in 1947. In 1954 a Nike missile station was installed on the island. The missile magazines were constructed above Point Blunt on the island's southeast corner, and the top of Mount Ida (now Mount Caroline Livermore) was flattened to make way for a helipad and the associated radar and tracking station. The missiles were removed in 1962, when the military left the island. The missile launch pad still exists, but the station atop Mount Caroline Livermore was restored to its original contours in 2006.
Fort McDowell - Source - DOD
3 Active Sites
Sites where military cleanup actions are still ongoing. The risk level of a site refers to a relative risk assessment made by the DOD, which prioritizes the cleanup of sites that pose greatest threat to safety, human health, and the environment.
HAZARDOUS SUBSTANCES
High Risk
Contaminated: Soil Surface Water
FUEL SPILL INVEST (HAZARDOUS, TOXIC AND RADIOACTIVE WASTE)
Spill Site Area
Cost $846K
Cost in 2015 plus expected future cost of cleanup
This site is under ongoing monitoring until Sep 2021
EXPLOSIVES & MUNITIONS
Risk Not Required
ARTILLERY COMPLEX - WATER
Medium/Large Caliber Cost $4.97M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action SEP 2029
This site is under ongoing monitoring until Sep 2059
Soil: High Risk
Contaminants of concern:
Lead, Copper, Mercury, Arsenic, and PCBs. Potential factor to include contact by park visitors and employees.
Contaminants:
Arsenic 28.0 mg/kg
Mercury (methyl) 460.0 mg/kg
Polychlorinated biphenyls (PCBs) 2400.0 mg/kg
Lead 3100.0 mg/kg
Copper and compounds 16000.0 mg/kg
Surface Water
Contaminants would include lead. Location of site is Ayala Cove Site.There's a sheen on the bay water that smells bad. Potential contact of contaminants would be by park visitors and employees.
Contaminants: Lead 23.0 ug/L
3 Active Sites
Sites where military cleanup actions are still ongoing. The risk level of a site refers to a relative risk assessment made by the DOD, which prioritizes the cleanup of sites that pose greatest threat to safety, human health, and the environment.
HAZARDOUS SUBSTANCES
High Risk
Contaminated: Soil Surface Water
FUEL SPILL INVEST (HAZARDOUS, TOXIC AND RADIOACTIVE WASTE)
Spill Site Area
Cost $846K
Cost in 2015 plus expected future cost of cleanup
This site is under ongoing monitoring until Sep 2021
EXPLOSIVES & MUNITIONS
Risk Not Required
ARTILLERY COMPLEX - WATER
Medium/Large Caliber Cost $4.97M
Cost in 2015 plus expected future cost of cleanup
Final Cleanup Action SEP 2029
This site is under ongoing monitoring until Sep 2059
Soil: High Risk
Contaminants of concern:
Lead, Copper, Mercury, Arsenic, and PCBs. Potential factor to include contact by park visitors and employees.
Contaminants:
Arsenic 28.0 mg/kg
Mercury (methyl) 460.0 mg/kg
Polychlorinated biphenyls (PCBs) 2400.0 mg/kg
Lead 3100.0 mg/kg
Copper and compounds 16000.0 mg/kg
Surface Water
Contaminants would include lead. Location of site is Ayala Cove Site.There's a sheen on the bay water that smells bad. Potential contact of contaminants would be by park visitors and employees.
Contaminants: Lead 23.0 ug/L
Marin Municipal Water District Marin County, California Serves: 195,362
https://www.ewg.org/tapwater/system.php?pws=CA2110002
Data available: 2012—2017
Source: Surface water Contaminants Detected
8 EXCEED EWG HEALTH GUIDELINES
19 Total Contaminants
EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the California State Water Resources Control Board, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.
https://www.ewg.org/tapwater/system.php?pws=CA2110002
Data available: 2012—2017
Source: Surface water Contaminants Detected
8 EXCEED EWG HEALTH GUIDELINES
19 Total Contaminants
EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the California State Water Resources Control Board, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.
The Marin Municipal Water District was not tested by the California Water Board for PFOS/PFOA in 2019.
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