Keeping the Vision: A Small Port’s Journey to Comprehensive Remediation of a Wood Treating Site
Notice bibliographique
Résumé
The former Pacific Wood Treating’s (PWT’s) wood-treating operations heavily impacted the Lake River Industrial Site (LRIS) that is owned by the Port of Ridgefield (the Port) and is located along the lower Columbia River in the city of Ridgefield, Washington. Site impacts included extensive dense nonaqueous phase liquid (DNAPL) contamination in soil and groundwater as well as ubiquitous metals, tetrachloroethene, pentachlorophenol (PCP), and dioxin contamination in soil. Dioxin contamination extended off of the site conveyed by stormwater into surface waterbodies and wetlands and into an adjacent residential neighborhood by truck tracking and aerial deposition. By partnering with the Washington State Department of Ecology (Ecology), the Port was able to make use of state grant funding, avoid the National Priorities List, and begin their vision of turning the site into a community asset. The Port performed a comprehensive investigation and remediation of the site over two decades to both address risk to human health and the environment and to return the Port’s property to productive use. The Port implemented remediation primarily as a sequence of strategic emergency and interim actions that were intended to function together as a final remedy. Remediation technologies employed on Port-owned property included steam-enhanced remediation of DNAPL in deep groundwater, excavation and off-site disposal of soil and shallow DNAPL impacts, installation of a clean soil cap across the site, and replacement of the aged storm sewer network. Dioxin-contaminated sediment in Lake River, a tidal backwater of the Columbia River, was removed using the precision-dredging method. Dioxin contamination in Carty Lake, a priority wetland habitat in the Ridgefield National Wildlife Refuge (RNWR), was removed by excavation “in the dry”; habitat within the lake was successfully restored and enhanced. The Port also led remediation of 29 residential properties and additional public rights-of-way with shallow dioxin contamination in soil. Accessible contaminated soil was excavated and disposed of off site; landscaping elements were carefully restored with minimal disruption to homeowners. This case study will follow the project, that included active remediation of nearly all environmental media, to understand how this small port district leveraged a variety of creative funding opportunities and advanced remedial technologies to lead and complete a major site cleanup. Work at the LRIS is now complete, and off-site work is nearly complete. The project opened Ridgefield’s only waterfront, closed by industry for over 100 years, to thriving public use—including dedicating a large swath of the waterfront as a public greenway. In cooperation with the Port, the RNWR has since made this greenway the locus of a new trail network across the refuge. The Port’s property is now ready for redevelopment as the focal point of a community that has consistently ranked as the fastest growing in Washington State.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,004 | 0,006 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,000 | 0,001 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,013 | 0,003 |
| Communication savante | 0,009 | 0,008 |
| Science ouverte | 0,004 | 0,008 |
| Intégrité de la recherche | 0,006 | 0,012 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,024 | 0,004 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».