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Water Targets in Hawaii: Clean Water Preparation for Environmental Testing

This project in Hawaii involves preparing and placing 80 carboys of ultra-clean water along altitude transects for environmental testing. The water, provided by the NSF/SRC Center for Environmentally Benign Semiconductor Manufacturing, is treated for purity with UV treatment and low trace metals. The targets are placed at different locations in Hawaii for various testing durations. A clean room at the University of Arizona is used for water preparation.

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Water Targets in Hawaii: Clean Water Preparation for Environmental Testing

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  1. Water Targets in Hawaii Prepared 80 carboys of ultra clean water Placed carboys along an altitude transect in Hawaii Retrieved 1 set of carboys for Be recovery testing (in progress) Approx. 1.5 yr of exposure remaining

  2. Water Targets - Preparation • Prepared 1.5 Metric Tons of 18.2 MWater in Acid-Leached HDPE Carboys • Provided by NSF/SRC Center for Environmentally Benign Semiconductor Manufacturing (fabrication water) at U of A • Includes UV treatment for TOC reduction and disinfection • < 1 ppb TOC • All trace metals including Be are below 2.5 ppt detection limit of ICPMS Clean room: NSF semiconductor fabrication center for ultra pure water, University of Arizona

  3. Water in Carboys

  4. Water Targets in Hawaii (5) Keck Headquarters (Waimea) 850 m • Placed on rooftops and in open areas on the Island of Hawaii • Target Retrieval • 1 year (Recovery Test) • 3 years (All Targets) (1 )Mauna Kea Observatories 4190 m (6) UH-Hilo 76 m [Insert map here] (3)Mauna Kea Visitor Center 2840 m (4) Saddle 1740 m (2) Mauna Loa Observatory 3440 m 40 km

  5. Water Targets in Hawaii Target locations

  6. Mauna Kea Mauna Kea Observatories 4187 m; 8 carboys

  7. Mauna Loa Mauna Loa Observatory 3439 m; 8 carboys

  8. Mauna Kea Visitor’s Center 2842 m; 8 carboys

  9. The Saddle 1742 m; 16 carboys

  10. Keck - Waimea 850 m; 16 carboys

  11. University of Hawaii, Hilo 76 m; 24 carboys

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