DOH releases validated results of December Aliamanu Army Reservation system flush

Posted on Jan 14, 2022 in Navy Water System Incident, Newsroom

HONOLULU – The Hawaiʻi Division of Well being (DOH) has launched outcomes from a U.S. Navy check in December that indicated a failure to satisfy DOH incident-specific standards. Consequently, a second spherical of system flushing was performed at Consuming Water Distribution System Restoration Plan Zone H2, which is a part of Aliamanu Army Reservation. The info was validated by a 3rd occasion.

One pattern collected from Zone H2 detected Complete Petroleum Hydrocarbons – Diesel Vary (TPH-d) at 620 elements per billion (ug/L). DOH requires that TPH outcomes for this emergency response fall at or beneath 200 elements per billion, which is the extent thought-about undetected, as a way to transfer to the subsequent step within the flushing course of.

Click here to download the laboratory report. The exceedance might be considered on web page 8.

The pattern was collected by the Navy on December 26 following preliminary flushing of the water distribution system in Zone H2. Upon receipt of information indicating that the pattern examined optimistic for diesel vary organics above DOH’s incident particular parameter, the Interagency Consuming Water System Staff made the choice to re-flush the system consistent with its sampling plan. In addition to DOH, Interagency Consuming Water System Staff members embrace the U.S. Navy, the U.S. Military and the U.S. Environmental Safety Company.

Zone H2 was subsequently re-flushed and sampling is presently underway. The brand new samples would want to satisfy DOH incident particular standards earlier than flushing and sampling of particular person houses and buildings can start.

The Navy laboratory examined for the 2 forms of analytes: Complete Petroleum Hydrocarbons (TPH) and Unstable Natural Compounds (VOC).

Consuming Water Pattern Outcomes for Complete Petroleum Hydrocarbons (TPH) 

Petroleum hydrocarbons are measured in response to their size in 3 classes: Complete Petroleum Hydrocarbons – Gasoline Vary (TPH-g), Complete Petroleum Hydrocarbons – Diesel Vary (TPH-d), and Complete Petroleum Hydrocarbons – Oil Vary (TPH-o). For extra details about TPH, please see the What are Petroleum Hydrocarbons Fact Sheet.

TPH outcomes replicate the quantity of petroleum hydrocarbons within the consuming water on the time of the pattern.

DOH has set the TPH Challenge Screening Ranges for this incident as not detected at lower than or equal to 200 elements per billion.

Consuming Water Pattern Outcomes for Unstable Natural Compounds (VOCs)

VOCs are carbon-based compounds that evaporate simply into the air.  Fuels and different petroleum merchandise comprise various quantities of VOCs.  

For extra data on VOCs: https://www.epa.gov/air-emissions-inventories/what-definition-voc  

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PDF: DOH releases validated result of December Aliamanu Military Reservation system flush



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