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Information Repositories <br /> LLNL Visitors Center Tracy Public Library <br /> Enter from Greenville Road 20 East Eaton Avenue <br /> Livermore, CA 94551 (510) 422-9797 Tracy, CA 95376 (209) 835-2221 <br /> Hours: Monday, Tuesday 10 am-4 pm Hours: Monday 1 pm-8 pm <br /> Wednesday 12 noon--4 pm Tuesday 10 am-5 pm <br /> Thursday, Friday 10 am-4 pm Thursday 2 pm-6 pm <br /> Saturday 12 noon-5 pm <br /> References <br /> American Cancer Society (1994), California Cancer Facts and Figures 1994, American Cancer <br /> Society, California Division, Inc., Oakland, CA. <br /> Rueth, L., and T. Berry (1995), Final Feasibility Study for the General Services Area Operable <br /> Unit, Lawrence Livermore National Laboratory Site 300,Lawrence Livermore National Labo- <br /> ratory, Livermore, CA. (UCRL-AR-113860). <br /> Webster-Scholten, C. P., Ed. (1994), Final Site-Wide Remedial Investigation Report, Lawrence <br /> Livermore National Laboratory Site 300,Lawrence Livermore National Laboratory,Livermore, <br /> CA. (UCRL-AR-108131). <br /> Glossary <br /> Aquifer: Permeable rock or sediment in an underground formation that can store and supply <br /> water to wells and springs. Aquifers can be a source of water for domestic, agricultural, and <br /> industrial uses. Used synonymously with "water-bearing zone". <br /> Aquitard, Low-permeability sediment or rock layers typically composed of clay or claystone, <br /> through which ground water can move only very slowly. <br /> ARARs: (Applicable or Relevant and Appropriate Requirements): Federal and state standards, <br /> requirements, criteria, or limitations pertaining to the proposed remedial action. <br /> Baseline risk assessment: Characterization of the potential adverse health effects of human and <br /> nonhuman species exposure to environmental hazards. <br /> Carcinogen: A cancer-causing substance or agent. <br /> Contaminant: A chemical that degrades the natural quality of a substance or environmental <br /> medium such as air, water, or soil. <br /> Dewatering: Pumping a water-bearing zone at a sufficient rate to lower the water table either <br /> temporarily or permanently. <br /> Exposure route: The means by which a chemical may enter the body. The three main exposure <br /> routes generally evaluated are ingestion (drinking or eating), inhalation (breathing), and dermal <br /> contact (absorbed through the skin). <br /> 17 <br />