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Santa Susana Field Laboratory Remedial Site Assessment
The Preliminary Assessment/Site Inspection (PA/SI) report summarizes the findings of preliminary investigative activities for use in the Hazardous Ranking System model (HRS). This PA/SI assesses the whole SSFL site and evaluates both chemical and radiological contaminates.
The HRS uses a structured analysis approach to scoring sites. This approach assigns numerical values to factors that relate to risk based on conditions at the site. The factors are grouped into three categories:
- likelihood that a site has released or has the potential to release hazardous substances into the environment;
- characteristics of the waste (e.g. toxicity and waste quantity); and
- people or sensitive environments (targets) affected by the release.
Four pathways can be scored under the HRS:
- ground water migration (drinking water);
- surface water migration (drinking water, human food chain, sensitive environments);
- soil exposure (resident population, nearby population, sensitive environments); and
- air migration (population, sensitive environments).
After scores are calculated for one or more pathways, they are combined using a root-mean-square equation to determine the overall site score.
Site Assessment Report and Supporting Documents
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Remedial Site Assessment Decision (PDF) (2pp, 116K)
Field Laboratory Completion Fact Sheet (PDF) (2pp, 83K)
SSFL PASI Report - r2 complete (PDF) (52pp, 6.43M)
- References Cover Sheet (PDF) (22pp, 21K)
- Reference 1 (PDF) (2pp, 105K)
- Reference 2 (PDF) (182pp, 11.83M)
- Reference 3 (PDF) (38pp, 4.13M)
- Reference 4 (PDF) (255pp, 18.41M)
- Reference 5 (PDF) (98pp, 2.71M)
- Reference 6 (PDF) (21pp, 1.17M)
- Reference 7 (PDF) (147pp, 2.21M)
- Reference 8 (PDF) (2pp, 43K)
- Reference 9 (PDF) (2pp, 43K)
- Reference 10 (PDF) (2pp, 43K)
- Reference 11 (PDF) (2pp, 43K)
- Reference 12 (PDF) (7pp, 431K)
- Reference 13 (PDF) (74pp, 3.21M)
- Reference 14 (PDF) (11pp, 114K)
- Reference 15 (PDF) (36pp, 1.98M)
- Reference 16 (PDF) (31pp, 4.49M)
- Reference 17 (PDF) (29pp, 3.27M)
- Reference 18 (PDF) (472pp, 21.13M)
- Reference 19 (PDF) (338pp, 25.81M)
- Reference 20 (PDF) (63pp, 1.58M)
- Reference 21 (PDF) (96pp, 3.87M)
- Reference 22 (PDF) (112pp, 4.78M)