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Richard L Henry <br />Chief Hydrogeologist <br />regulators resulting in cost savings of $200K and avoided a <br />notice of violation. <br />$4.SM Rocky Flats Operable Unit 4 Phase II RFI/RI, Solar <br />Evaporation Ponds: Technical manager, provided technical <br />management that included accelerated field data collection <br />using innovative screening assessment techniques and <br />characterization ofthe contaminant plumes in the saturated zone <br />using surface and subsurface hydrogeological and geochemical <br />data. The field program provided high quality data over a large <br />area in a short time period to support site risk management <br />decisions regarding an accelerated groundwater cleanup plan. <br />Operable Unit 4 Phase I IM/IRA, Rocky Flats Solar <br />Evaporation Ponds: Project hydrogeologist, performed an <br />evaluation of the performance of selected engineered barrier <br />design. The evaluation included a predictive simulation, using <br />the HELP, VLEACH, and VS2DT codes, of constituent <br />leaching from the vadose zone to the saturated zone to assess <br />the barrier's performance in minimizing groundwater quality <br />impacts. The selected barrier design minimized groundwater <br />impacts and provided RCRA-compliant consolidation and <br />containment of wastes, debris, and contaminated soils for 1, 000 <br />years. <br />As project hydrogeologist at Rocky Flats, he was responsible for <br />the development and implementation of a technology <br />demonstration of natural attenuation of mixed oils and <br />chlorinated solvents at the RFETS OU2. The demonstration <br />resulted in the development of a protocol for assessing intrinsic <br />remediation at RFETS. <br />Groundwater Remediation Alternatives Feasibility Study, <br />Rocky Flats Operable Unit 2: Project hydrogeologist; the <br />Feasibility Study included an evaluation of contaminant <br />transport using MODFLOW and MT3D. The Feasibility Study <br />recommended development of a Technical Impracticability (TI) <br />waiver for the site because of the extreme dij~culty in <br />recovering contaminants from groundwater in the variably <br />saturated, low permeability, fractured bedrock formations. <br />Idaho National Engineering and Environmental Laboratory, <br />ID: Technical manager for the preparation of geotechnical field <br />sampling plan to support the siting and design of the disposal <br />facility. The plan provided guidance foc characterizing a 130 <br />acre site, required geotechnical laboratory analyses, a borrow <br />source investigation for soils suitable for a compacted clay liner, <br />V iW Z <br />