Some of Caterpillar Tractor's key Resource Conservation and Recovery Act (RCRA) corrective action documents, reports and photographs are accessible online:
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Environmental Indicator Human Exposure Caterpillar Tractor Company in York, Pennsylvania (PDF)(8 pp, 294 K)
RCRA Environmental Indicator - Current Human Exposures under Control
Environmental Indicator Groundwater for Caterpillar Tractor Company in York, Pennsylvania (PDF)(8 pp, 1 MB)
RCRA Environmental Indicator - Migration of Contaminated Groundwater under Control