The Contaminated Sites Cleanup Process 18 AAC 75

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The Contaminated Sites Cleanup Process (18 AAC 75)

The Contaminated Sites Cleanup Process (18 AAC 75)

Cleanup Process – Overseen by ADEC A. Stop It 1. 2. Describe It B.

Cleanup Process – Overseen by ADEC A. Stop It 1. 2. Describe It B. 1. 2. Site characterization (75. 335) Risk evaluation/cleanup levels (75. 340 -. 350) Remediate It C. 1. 2. D. Initial Response (75. 310) Interim removal Action (75. 330) Cleanup Plan (75. 360) Institutional Controls (75. 375) Close It (75. 380)

Immediate Response and Interim Removal Stop the immediate or current exposure

Immediate Response and Interim Removal Stop the immediate or current exposure

Step 1: Describe it – “assessment” or “characterization” n n n What kind(s) of

Step 1: Describe it – “assessment” or “characterization” n n n What kind(s) of contamination? Where exactly is it? How could people, plants or animals come in contact with it?

Step 1: Describe it: n Site Characterization Work plan

Step 1: Describe it: n Site Characterization Work plan

Step 2: Clean it up n Most stringent levels q n Groundwater must meet

Step 2: Clean it up n Most stringent levels q n Groundwater must meet Federal drinking water levels Risk-based cleanup levels: q q q Are people or animals exposed? Land use – residential? industrial? subsistence use? Is the contamination spreading?

Step 3: Closure n Once cleanup levels are met, the site is considered closed

Step 3: Closure n Once cleanup levels are met, the site is considered closed by DEC. n If the strictest levels cannot be achieved conditions may be attached to the closure.

Before cleanup

Before cleanup

Step 3: Closure

Step 3: Closure

Step 3: Closure

Step 3: Closure

Before cleanup

Before cleanup

Step 3: Closure Setting conditions

Step 3: Closure Setting conditions

Step 3: Closure Setting conditions

Step 3: Closure Setting conditions

Step 3: Closure with Institutional Controls n Institutional controls - examples q q q

Step 3: Closure with Institutional Controls n Institutional controls - examples q q q Deed restrictions against drilling wells or transporting soil or groundwater off site. Responsible Party monitors contamination until cleanup levels are met. Responsible Party must maintain a fence around, or a cap over, an area of contamination

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