18 AAC 78.615. Groundwater and surface water sample number and location

(a) If available evidence indicates that groundwater contains a hazardous substance in concentrations exceeding the applicable cleanup level determined under 18 AAC 75.345, or that surface water contains a hazardous substance in concentrations exceeding the applicable standard in 18 AAC 70.020(b) , the owner or operator of the UST that caused or contributed to the groundwater or surface water contamination shall collect and analyze water samples to verify that the corrective action activities met the corrective action requirements of this chapter.

(b) Groundwater monitoring wells must be installed, developed, and decommissioned in accordance with the department's Recommended Practices for Monitoring Well Design, Installation, and Decommissioning, April 1992, adopted by reference, or another method that the department determines to be protective of human health and safety, and of the environment. Samples must be collected in accordance with the UST Procedures Manual.

(c) If a hazardous substance at a UST site has impacted surface water quality, the owner or operator of the UST that caused or contributed to the impact shall, after corrective action, collect and analyze surface water samples to verify that the corrective action activities met the corrective action requirements of this chapter. Analysis of water samples must be conducted in accordance with the UST Procedures Manual.

History: Eff. 1/22/99, Register 149; am 6/25/99, Register 150

Authority: AS 46.03.020

AS 46.03.050

AS 46.03.365

Editor's note: Recommended Practices for Monitoring Well Design, Installation, and Decommissioning, adopted by reference in 18 AAC 78.615, may be viewed at or requested from the department's Anchorage, Fairbanks, Juneau, and Soldotna offices.

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