| In Situ Estuarine and Marine Toxicity Testing: A Review, Including Recommendations for Future Use in Ecological Risk Assessment |
Sep 2009 |
90 pages |
| Authors:
Gunther Rosen; S L Poucher; M S Greenberg; G A Burton; D B Chadwick; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
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 | This report reviews the advantages and limitations of in situ estuarine and marine toxicity testing strategies. Case studies that detail cage designs, testing strategies, and appropriateness of various species from different taxonomic groups are followed by recommendations on a strategy to assess the biological impact of potentially contaminated waste sites in the coastal environment. |
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| Review of Best Practices, Knowledge and Data Gaps, and Research Opportunities for the U.S. Department of Navy Vapor Intrusion Focus Areas |
May-2009 |
83 pages |
| Authors:
D B Chadwick; I Rivera-Duarte; P Johnson; T McAlary; R Ettinger; B Eklund; H Hayes; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
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| Vapor intrusion (VI) refers to the movement of chemical vapors from contaminated soils or groundwater through the subsurface and into buildings (indoor air). This exposure pathway has attracted significant attention from regulatory agencies over the past decade in response to several well-publicized cases. Virtually all of the current regulatory documents generated are guidance and have not been promulgated as law, allowing for negotiation on the approach to follow in accordance ... |
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| Monitored Natural Recovery at Contaminated Sediment Sites |
May 2009 |
277 pages |
| Authors:
Victor S Magar; D B Chadwick; Todd S Bridges; Phyllis C Fuchsman; Jason M Conder; Timothy J Dekker; Jeffrey A Steevens; Karl E Gustavson; Marc A Mills; ENVIRON INTERNATIONAL CORP ARLINGTON VA
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| This document provides a technical guide for project managers and management teams evaluating and implementing monitored natural recovery (MNR) at contaminated sediment sites. It is primarily intended to support environmental restoration at United States Department of Defense (DoD) sites; however, many aspects of the document also may be useful for other government organizations, potentially responsible parties, communities, and stakeholders involved in management of sediment cleanup. Specific objectives include: 1. Establishing ... |
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| Enhanced Monitored Natural Recovery (EMNR) Case Studies Review |
May 2009 |
55 pages |
| Authors:
K Merritt; J Conder; V Magar; V J Kirtay; D B Chadwick; ENVIRON CORPORATION PORTLAND ME
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| This case study review was prepared as part of a Navy-led project to foster broader understanding and acceptance of the Enhanced Monitored Natural Recovery (EMNR) remedy through demonstration and validation of performance and cost-effectiveness at Department of Defense contaminated sediment sites. EMNR is a hybrid remedy that generally relies on the combined effects of a thin layer cap (enhancement) and natural recovery, and is verified over time through monitoring. This ... |
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| Demonstration of an Integrated Compliance Model for Predicting Copper Fate and Effects in DoD Harbors |
Dec-2008 |
140 pages |
| Authors:
D B Chadwick; I Rivera-Duarte; G Rosen; P Wang; R C Santore; A C Ryan; P R Paquin; S D Hafner; W Choi; SPACE AND NAVAL WARFARE SYSTEMS CENTER PACIFIC SAN DIEGO CA
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| The Environmental Security Technology Certification Program supported Project ER-0523 on the demonstration of an integrated modeling system that provides an improved methodology for achieving copper compliance in harbors. This model is consistent with the current regulatory framework based on the Biotic Ligand Model (BLM) for freshwater. The integrated model has two components, the seawater-BLM (developed as part of this project), and the existing hydrodynamic transport and fate algorithm, Curvilinear Hydrodynamics ... |
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| Demonstration of an Integrated Compliance Model for Predicting Copper Fate and Effects in DoD Harbors |
Nov-2008 |
50 pages |
| Authors:
D B Chadwick; Luis A Cruz; William Swietlik; Adam Ryan; Paul Paquin; Robert C Santore; Gunther Rosen; Ernie Arias; Ignacio Rivera-Duarte ;Pei-Fang Wang; Andrea Leeson; ENVIRONMENTAL SECURITY TECHNOLOGY CERTIFICATION PROGRAM OFFICE (DOD) ARLINGTON VA
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| Site-specific water quality standards (WQS) are developed in order to reach regulatory criteria appropriate for individual bodies of water. These WQS are required as the nationally suggested water quality criteria (WQC) for seawater was derived with clean coastal seawater that does not include the natural ingredients that buffer the toxic effects of contaminants. As such, federal WQC could be overprotective, enforcing effluent characteristics that are very difficult and expensive to ... |
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| User's Guide for Assessing Sediment Transport at Navy Facilities |
Sep 2007 |
165 pages |
| Authors:
A C Blake; D B Chadwick; P J White; C A Jones; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
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| The Navy has more than 200 contaminated sediment sites, with a projected remediation cost of $1.3 billion. Space and Naval Warfare Systems Center San Diego (SSC San Diego) developed this guide to ensure that sediment investigations and remedial actions are successful and cost effective. It provides guidance on evaluating sediment transport at contaminated sediment sites, and describes how to use sediment transport information to support sediment management decisions. This guide ... |
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| Development and Deployment of an Ultrasonic Groundwater Seepage Meter: A Reliable Way to Measure Groundwater Seepage |
01-Sep-2003 |
10 pages |
| Authors:
C F Smith; R J Paulsen; D B Chadwick; J G Groves; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
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| Submarine groundwater discharge can significantly influence the near shore transport of chemicals into surface waters. Quantification of the sources and rates of such discharge is critical to development of management strategies. Quantification requires a groundwater seepage meter that provides continuous measurements at high resolutions over an extended period of time. An ultrasonic flow meter has been developed for such measurements in the subsurface environment. Connected to a collection funnel the ... |
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