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Louisiana Cleanup Standards
for Contaminated Groundwater
The Louisiana Department of Environmental Quality (LDEQ) has developed a Risk Evaluation/Corrective Action Program (RECAP) to address risks to human health and the environment posed by the release of chemical constituents to the environment. This is LDEQ’s primary statutory mandate for remediation activities. It is clear in Louisiana’s Environmental Quality Act that risk to human health and the environment must be evaluated in the remedial decision-making process. RECAP uses risk evaluation to: (1) determine if corrective action is necessary for the protection of human health and the environment, and (2) identify constituent levels in impacted media that do not pose unacceptable risks to human health or the environment, i.e. RECAP Standards. RECAP consists of a tiered framework composed of a Screening Option and three Management Options. This tiered approach allows site evaluation and corrective action efforts to be tailored to site conditions and risks. As the Management Option level increases, the approach becomes more site-specific and, hence, the level of effort required to meet the objectives of the Option increases. Although the level of effort required for each Option varies, each Option achieves a common goal: protection of human health and the environment. Attached are the Screening Option tables that can be used to determine if additional evaluation and/or corrective action is warranted. The lower of the appropriate toxicity based value (Soil_SSni or Soil_SSi) and ground water protection value (Soil_SSGW) shall be used for soil. See our Web Site at www.deq.state.la.us/technology/recap/ for additional information or contact the Remediation Services Division at (225) 219-3236 or the Environmental Technology Division at (225) 219-3406.
* GW_SS - Groundwater Screening Standard protective of a current or potential public water supply M - Based on EPA's Maximum Contaminant Level (MCL) for drinking water N - Based on non-carcinogenic health effects Q - Based on analytical quantitation limit S - Soil level protective of groundwater for inorganic constituents based on the maximum concentration for the beneficial use of sewage sludge W - Solubility limit is less than health based limit thus default to solubility limit Contact: Steve Chustz, Louisiana Department of Environmental Quality, Office of Environmental Assessment, 225-219-3406 E-mail: stevec@deq.state.la.us Web Site: www.deq.state.la.us/technology/recap/ For additional information visit the Web Site or contact the Remediation Services Division at (225) 765-0487 or the Environmental Technology Division at (225) 765-0585.
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