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PB92228543 - POLLUTION PREVENTION WORKSHOP
This volume documents the workshop held in Williamsburg, VA, on March 25-27, 1991, to review multi-media (air, water, land) data on environmental releases from Amoco Oil Company's Yorktown Virginia Refinery. Following the data review and a Refinery tour, breakout sessions were held to brainstorm on various topics including (a) process changes to reduce emissions, (b) groundwater protection, (c) criteria for ranking alternatives, (d) permitting issues, (e) general obstacles and incentives, and (f) maintenance and operating practices. This document provides presentation materials and notes from each breakout session.
PB92228550 - REFINERY RELEASE INVENTORY
This volume summarizes physical data obtained during a 2-year pollution prevention study of Amoco Oil Company's Yorktown Virginia Refinery. A multi-media sampling program was used to identify potential pollution sources within the Refinery. Sampling and analysis included air, surface water, groundwater, and solid waste data. Public perceptions about environmental issues of concern in the vicinity of the Refinery were also surveyed. The inventory showed that nearly 90% of the releases were airborne at this facility. Most of the remainder involved land disposal of solid wastes. Specific sources of major pollutants are identified.
PB92228568-SOLID WASTE DATA
This volume summarizes the solid waste emissions inventory, solids source identification, and the solid waste sampling program that was conducted at the Amoco Yorktown Refinery on September 25-27, 1990, in support of the Pollution Prevention Project.
Major findings showed that the majority of solid waste generation occurs as "end-ofpipe" solids resulting from the treatment of wastewaters from the refinery sewer. Based on a regression analysis of the composition data for samples collected during this project, major upstream contributors to these solids appear to be soils. Solids from process units are also significant contributors.
PB92228576-GROUNDWATER & SOIL DATA
This volume summarizes the evaluation of potential sources and sinks of groundwater contamination to determine the effects of the Yorktown refinery on the subsurface. Subsurface characterization of the refinery included an extensive subsurface sampling
program that included 39 soil borings, 181 monitoring wells, and 23 surface water sampling points. Groundwater flow was modeled using FTWORK, a modification of MODFLOW.
Results showed that, due to above-ground process piping, contamination at the Yorktown Refinery was significantly less than that observed at other refineries. Freephase hydrocarbons were only detected in one monitoring well. Metals contamination was limited to monitoring wells associated with historic waste management activities at the east end of the refinery. Contamination was detected in monitoring wells located adjacent to process units but affects were limited due to the process sewer acting as a collection point.
PB92228584-SURFACE WATER DATA
This report summarizes the surface water sampling program at the Amoco Refinery at Yorktown, Virginia. The surface water data provides a snapshot of surface water pollutant generation and discharge from the refinery. Different process units contribute to the total wastewater flow of 460 GPM in the refinery. Water in the ditch system, which is non-process water, is free of organic contamination. Oil and grease, phenols, ammonia and sulfides are the significant components measured in the process wastewater. The concentrations of organics in most water streams leaving the individual process units are relatively low, in the 1-5 parts per million (ppm) range. However, extended contact of oil and water in the sewers increases the organic loading. A few individual streams such as the crude desalter brine and tank water draws have high pollutant loadings. Concentrations of metals in the refinery wastewater are very low. The wastewater treatment plant is very effective in reducing the pollutant loading in the water with overall removal efficiencies greater than 99% for most organics and inorganics.
PB92228592 - AIR QUALITY DATA. VOLUME I
This volume summarizes the measurement activities performed by Radian Corporation to quantify airborne organic vapor emissions. Radian conducted 3 measurement tasks concurrently during the period September 25 - October 1, 1990. The data from these activities were used to explore pollution prevention options and the impact these options could have on human and environmental exposure to airborne emissions. In addition to sampling ambient air, specific emission sources--the oil/water (API) separator, underground sewer, blowdown stacks and water ponds--were also tested. Most sampling examined benzene, toluene, xylene, and ethylbenzene emissions.
PB92228600- AIR QUALITY DATA. VOLUME II
AIR QUALITY DATA, VOLUME II, APPENDICES A, I & L
This volume defines baseline air quality in terms of air emissions and ambient air quality. This baseline was used to evaluate potential impact of different pollution prevention options. The objectives of this study were to: 1) quantify current air emissions from the facility; 2) quantify ambient air quality impacts of these emissions; and 3) identify benefits of implementing pollution prevention alternatives or additional control measures.
Extensive computer modeling of the airshed immediately around the Refinery was conducted using the ISC Short-Term model with approximately 80 on-site emission sources and 8700 hourly meteorological data points.
This volume also includes:
Appendix A, which contains the analysis of tracer data used to evaluate fugitive emissions in the ultraformer unit area.
Appendix I, a summary of wind persistence data.
Appendix J, which contains Amoco responses to USEPA comments on the project's emission measurement techniques, data, etc.
PB92228618- PROJECT PEER REVIEW
This volume documents the Peer Review process and comments received on various aspects of the AMOCO/USEPA Pollution Prevention Project conducted at Amoco Oil Company's Yorktown Virginia Refinery. An external Peer Review was an integral part of the Project to provide a 3rd-party view of technical and scientific issues, as well as comments on potential policy implications. Reviewers were selected and meetings organized by Resources for the Future, based in Washington, DC. Many of the reviewers had academic backgrounds, although representatives from environmental and industrial consulting organizations were also included. Three full-day meetings were held during the 2-year project to review (1) the Workplan, (2) sampling results, and (3) project results and conclusions.
PB92228626- PROJECTS, EVALUATIONS AND RANKING
This volume describes the methodologies used to evaluate and rank the cost and effectiveness of each of the pollution prevention projects suggested for future investigation by the project workgroup. The report includes a third-party assessment (by IEC) to compare the different evaluation methodologies used by Amoco and the EPA.
PB92228634- ECOLOGICAL IMPACTS
This volume includes the findings of a two-phase (laboratory and field) assessment of the potential use of biomarkers to evaluate the impact of the Refinery effluent on the York River. In the laboratory phase of the study, several of the biomarkers tested responded to various dilutions of process water effluent in an apparent dose-dependent manner. In the field study, however, there was little evidence that similar exposure is occurring in fish collected from the York River mainstream. The field data did suggest PAH exposure in fish collected from the stormwater settling pond and perhaps from the creek below the pond. Further studies are needed to evaluate the usefulness of those assays in future biomonitoring studies.
Also included in this volume are a characterization of the York River and several previous field studies of benthic community response to the Refinery effluent, where impacts have been difficult to detect.
PB92228642 - PUBLIC PERCEPTIONS
This volume provides data obtained from interviews, focus groups and a telephone survey about environmental issues of concern for people living in the vicinity of Amoco Oil Company's Yorktown Virginia Refinery. Major concerns identified were related to land development and infrastructure support. The Refinery has a relatively low profile in the area. The most serious environmental concern identified was the management of municipal and industrial solid waste.
PB92228659 RISK ASSESSMENT METHODOLOGY AND RESULTS (incomplete as of 9/93)
This volume includes the third party assessment (performed by ABT, Inc.) of the relative risk that the refinery may have on the surrounding area. The primary focus of the assessment is airborne releases.
PB92228667- SUPPLEMENTARY INFORMATION (incomplete as of 9/93)
This volume includes data collected subsequent to the completion of the project study, which is integrally related to the study. Two such investigations include 1) additional testing of the blowdown stacks which showed significantly lower emissions; and 2) analysis on the sediment in the stormwater surge basin and a assessment of its effect on fish living in the basin.
PB92228691 AIR QUALITY DATA, VOLUME II. APPENDIX B-BENZENE &
PB92228709 AIR QUALITY DATA, VOLUME II, APPENDIX B-ETHYLBENZENE & XYLENE
The two volumes above contain the ISCST modeling results of BTEX emission monitoring data.
PB92228717 AIR QUALITY DATA, VOLUME II, APPENDICES C. D AND E
This volume includes the following appendices:
Appendix C - Summary of modeling and monitoring comparisons
Appendix D - Annual modeling for BTEX
Appendix E - Culpability Analyses for BTEX
PB92228725 AIR QUALITY DATA. VOLUME II, APPENDIX F
This volume includes the annual modeling analyses for SARA Chemicals.
AIR QUALITY DATA, VOLUME II. APPENDICES G AND H
This volume includes the following appendices:
Appendix G - Culpability Analyses for SARA Chemicals
R. E. Schmitt 9/93