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pollution-saint-nazaire-44.md

Pollution and Possible Carcinogen Sources in the Saint-Nazaire Region

Scope

Working perimeter for this note:

  • Saint-Nazaire
  • Montoir-de-Bretagne
  • Donges
  • Trignac
  • Port installations in the Nantes Saint-Nazaire estuary that can plausibly affect the Saint-Nazaire area

Goal:

  • identify major industrial sites and terminals
  • describe what they handle or produce
  • list plausible carcinogenic agents or carcinogenic byproducts implicated in those activities
  • describe likely release mechanisms
  • describe likely diffusion mechanisms

This is a working document. Findings below should be read as source-based hypotheses to prioritize, not as proof of exposure level at any given residence.

Important scope clarification:

  • this project does not limit itself to officially disclosed, prosecuted, or already-remediated pollution
  • it also includes pollutants that are plausibly emitted, generated, deposited, or historically left behind by a given industrial process, raw material, fuel, waste stream, or logistics activity
  • suspicion is in scope, provided it is tied to a real activity and clearly labeled by confidence level

Date of this working version:

  • 2026-03-29

Plan

  • Create tracking document
  • Inventory industrial sites and terminals from official or primary sources
  • Map handled materials and industrial processes to carcinogenic or possibly carcinogenic agents
  • Describe release mechanisms and likely diffusion pathways
  • Distinguish high-confidence sources from more speculative ones
  • Add source list and gaps

Status

Current focus:

  • first-pass synthesis completed from port, Georisques, prefecture, and company sources
  • legacy-sites pass started using SIS / BASOL / Infosols / Georisques records
  • next useful step after this legacy pass will be an emissions and compliance cross-check

Important framing:

  • not every important pollutant here is a carcinogen
  • some sites are major toxic or accident hazards without being obvious high-priority cancer sources
  • for a carcinogen-focused screening, refinery, coal/bitumen/mineral handling, shipbuilding/metal treatment, and some aerospace surface-treatment activities are stronger candidates than LNG or simple storage

Method

  • prioritize official sources for site presence and activity
  • infer plausible carcinogens from the industrial process actually present on site, even when those pollutants are not explicitly listed in a disclosed pollution file
  • separate:
    • direct carcinogens or carcinogenic byproducts
    • toxic but not clearly carcinogenic substances
    • accident scenarios versus chronic diffuse releases
  • treat legacy soil and sediment contamination as a separate pathway from routine air emissions
  • do not restrict the analysis to "proven" contamination alone

Evidence Labels

Every substance or pathway should ideally be tagged with one of these labels:

  • Documented:
    • directly identified in an official pollution, SIS, BASOL, inspection, or remediation source
  • Process-inferred plausible:
    • not directly disclosed for the site, but strongly consistent with the materials handled or the industrial process used there
  • Speculative:
    • possible, but currently supported only by weak or indirect clues

Working rule:

  • include both Documented and Process-inferred plausible pollutants
  • keep Speculative entries, but rank them lower and label them clearly

First-Pass Site Inventory and Carcinogen Screening

Site / area What is present or handled Carcinogen-relevant substances or byproducts to screen Likely release mechanism Likely diffusion mechanism Priority
Donges refinery (TotalEnergies Raffinage France) Crude oil refining; fuels, fuel oil, bitumen; large tank farm; marine, rail, road and pipeline transfers Benzene; other BTEX as co-pollutants; PAHs including benzo(a)pyrene in heavy fractions/combustion residues; possible metal-bearing oily particulates and refinery sludges Fugitive VOC leaks from tanks, flanges, loading/unloading, vents; combustion/flaring; spills; sludge and waste handling; runoff after incidents or firefighting Airborne VOC plume over short to medium distance; odor episodes; local deposition of oily particles; soil and estuary contamination from spills/runoff; sediment accumulation for heavier residues High
Montoir energy bulk / coal-related handling / PBN (ex-SEMO Montoir) Bulk minerals, hot-mix asphalt activity, declared coal/coke/bituminous materials; port page still lists coal among energy bulk flows at Montoir PAHs including benzo(a)pyrene; coal-tar/bitumen fume components; silica-containing mineral dust; trace metals in coal or mineral dust depending on feedstock Dust during unloading, transfer, storage, truck traffic and resuspension; fumes from asphalt heating; contaminated runoff from stockyards/paved areas Mostly local deposition downwind; short-range PM transport in dry/windy weather; accumulation in nearby soils, ditches, and sediments High
Chantiers de l'Atlantique / shipbuilding and heavy metal fabrication belt Steel fabrication, welding, blasting, painting, outfitting, repair, offshore structures Welding fumes; hexavalent chromium and nickel compounds from stainless/high-alloy work or primers; silica if abrasive blasting media are mineral-based; legacy asbestos, lead paints, PCBs in old ship-related materials Outdoor and indoor welding fumes; blasting dust; paint overspray and solvent exhaust; runoff from yards and docks; waste stripping/removal Very local worker and near-site air exposure; dust fallout on neighboring industrial/residential interfaces; harbor sediment contamination from decades of activity High, especially for legacy contamination
Airbus Atlantic / Airbus logistics and aerostructure cluster (Saint-Nazaire, Montoir, nearby partners) Fuselage sections, aerostructure assembly/logistics, metal and composite surface treatment, painting/sealing depending on workshop Hexavalent chromium compounds from anti-corrosion/surface-treatment operations; welding fumes; possible solvent-related VOC mixtures; possibly cadmium or chromate legacy residues on older lines/tools Surface-treatment baths and sludge; booth exhaust; solvent evaporation; sanding/grinding dust; wastewater from treatment lines Mostly localized industrial emissions and wastes; deposition of metal-bearing dust close to site; drainage/wastewater pathway for metal-bearing residues Medium to high, depending on actual surface-treatment still in use
FAMAT, Saint-Nazaire Active turbine / precision-metal industrial site in Brais with heat treatment, abrasive work, surface treatment, and photosensitive-surface processing according to current Georisques rubrics Process-inferred plausible: hexavalent chromium or other surface-treatment residues depending on baths used; nickel / cobalt / metal-bearing dust from alloy machining or finishing; solvent and degreasing-related VOCs; documented chlorinated-solvent legacy remains relevant Surface-treatment baths, sludge, degreasing, abrasive blasting, machining dust, wastewater, spills, and residual groundwater contamination Mostly localized industrial emissions and waste streams; strong soil / groundwater memory pathway if solvent or oil handling persists historically on the site Medium
Yara France, Montoir-de-Bretagne Historically fertilizer manufacture; Georisques still lists fertilizer, acids, bases, ammonium nitrate, and ammonia authorizations; site remains a major hazardous-chemicals node Carcinogen signal is less direct than for refinery/coal; possible cadmium and other trace metals if phosphate-bearing raw materials/fertilizer dusts are involved; possible acid mists depending on process; ammonia itself is toxic but not a carcinogen Dust from solids handling and loading; vent emissions; wastewater and runoff; accidental release scenarios dominate public-risk planning Fertilizer dust deposition is local; dissolved contaminants move via water/runoff; ammonia/acid aerosols can disperse atmospherically but are not the main carcinogen pathway Medium for carcinogens, high for broader toxicity
Cargill France, Montoir agro-industrial terminal Seed/crushing and large silo activity; plant-based raw material processing; major agro-bulk handling Lower-priority carcinogen source overall; screen for diesel exhaust, combustion byproducts, and episodic mycotoxin-contaminated grain dust; if solvent extraction is present, some substances are toxic without necessarily being carcinogenic Silo dust, handling dust, dryer/boiler exhaust, truck and ship logistics, wastewater from processing Mostly local dust and traffic-related air exposure; less convincing as a major regional carcinogen source than refinery or coal/bitumen Low to medium
EQIOM cement/mineral site, Montoir Cement/mineral grinding and handling Respirable mineral dust including crystalline silica; hexavalent chromium traces in cement are also relevant for worker exposure Unloading, grinding, transfer points, silo vents, truck loading, resuspension Primarily localized particulate deposition near the site and along truck corridors Medium
Elengy LNG terminal, Montoir LNG reception, storage, regasification, truck loading Limited carcinogen relevance in routine operation; methane and LNG are major safety and climate issues, not classic carcinogens; combustion auxiliaries may emit conventional combustion byproducts Gas leaks, venting, combustion equipment, accident/fire scenarios Mainly atmospheric dispersion; carcinogen pathway is not the main reason to prioritize this site Low for carcinogens, high for accident hazard
Ro-ro terminal and large vehicle storage/logistics zones near the bridge and port access Storage of new vehicles, trucking, and an official vehicle-preparation center at Montoir used by CAT, GEFCO/CEVA and Baudron, with PDI, cleaning, accessory fitting, and electronic/mechanical checks Diesel exhaust; brake/tire wear particles carrying metals and PAHs; fuel/lubricant leaks; process-inferred plausible runoff from cleaning/preparation with detergents, oils, waxes, solvents, metals, and microplastics Idling, truck traffic, surface runoff from large paved areas, leaks, vehicle preparation/cleaning effluents, possible wash-water management failures Very local roadside and yard air exposure; stormwater transfer to ditches or estuarine waters; localized non-air contamination pathway more plausible than broad atmospheric carcinogen burden Medium for localized pollution, low to medium for carcinogens

Notes by Site

1. Donges refinery

Why it stays at the top of the list:

  • official inspection material describes a large, long-running refinery in service since 1930 with crude receipt, refining, storage, and multi-modal shipment
  • refinery processes and petroleum storage are a classic source category for benzene and petroleum-related VOC leakage
  • heavy fractions, combustion, sludge, and spill residues make PAHs and some metal-bearing residues plausible

Key diffusion point:

  • benzene and light VOCs are an air issue first
  • PAHs, oily residues, and metals are more likely to create localized deposition and soil/sediment issues

Documented accident-path diffusion reminder:

  • the Loire-Atlantique prefecture summary published on 2024-01-15 after the 2022 gasoline leak states that the accident involved 770 m3 of gasoline, more than 11 000 tonnes of potentially polluted soil were excavated, and benzene modelling showed exceedances of the temporary ANSES guide value over parts of the Donges town center, especially near the site, during the first 4 days of the incident
  • the same official summary states that the annual regulatory value for ambient air was not exceeded outside the refinery, which is useful because it distinguishes:
    • a short-duration accident plume and near-site exposure signal
    • from the longer-term annual ambient-air picture
  • the same official communication also records PFAS-oriented investigations linked to firefighting foams and foam-assisted benzene control during the response
  • a second prefectural communication published on 2024-12-03 after a crude-oil leak on appontement n°6 states that the quantity released was evaluated at less than 15 m3, which reinforces the separate marine-transfer / jetty / piping pathway in addition to the refinery-core pathway

2. Coal, coke, asphalt, and mineral handling

This is stronger than it may look at first glance:

  • the active PBN site declares hot-mix asphalt, mineral transit, and coal/coke/bituminous-material handling
  • the port still presents coal as part of Montoir energy-bulk activity
  • this combination makes PAH screening, especially benzo(a)pyrene, very relevant

Important nuance:

  • "Quai des Charbonniers" in Saint-Nazaire now appears to be used at least in part for offshore-wind logistics, so the historical name does not automatically mean active coal handling in the Saint-Nazaire urban core
  • current coal-related screening should focus more on the Montoir bulk-energy area unless more precise terminal evidence emerges

3. Shipbuilding and aerospace metal-treatment sources

These sources are easier to miss if one thinks only in terms of "chemical plants":

  • welding fumes are now a recognized carcinogenic concern
  • surface-treatment and anti-corrosion systems can involve chromium(VI) compounds
  • outdoor yards create a direct dust/runoff pathway to neighboring land and dock sediments

These are especially important for:

  • worker exposure
  • neighborhoods directly adjacent to Penhoët and port-industrial interfaces
  • legacy contamination in soils, drains, and sediments

4. Yara

Yara matters, but not mainly for the same reasons as the refinery:

  • ammonia and ammonium nitrate make it a major toxic and accident-risk site
  • for a carcinogen-focused list, the stronger question is whether phosphate-related raw materials, trace metals, or acid-mist processes produced chronic environmental contamination

Important date note:

  • a 2025 press report states industrial fertilizer production halted in autumn 2023 and the site was shifting toward logistics
  • as of the Georisques data consulted on 2026-03-29, the site still shows fertilizer, acid/base, ammonium nitrate, and ammonia authorizations
  • this means administrative authorizations and real industrial activity may not match perfectly at the same date

Documented release-path reminder:

  • Loire-Atlantique prefecture communications of 2024-04-02 and 2024-04-16 state that the power-loss incident of 2024-03-29 / 2024-03-30 led to the discharge of nitrogen-bearing water into the Loire
  • those same official communications also state that the main environmental consequence retained by the State was this water pathway, while the site remained under reinforced administrative follow-up and additional sanctions
  • the 2024-04-16 official return also states that the Loire impact was considered very limited at river scale because of the high flow of the estuary, while separate sanctions of 363.6 kEUR were announced for atmospheric non-compliances in 2022 and 2023
  • this matters for the current source map because even in a transition / shutdown phase, Yara remains a real runoff, wastewater, demolition-water, and residual-soils site, not just a historical issue

5. Vehicle storage lots near the Saint-Nazaire bridge

This is now better grounded than in the initial pass because the official port page confirms:

  • a vehicle-preparation center
  • PDI / pre-delivery inspection
  • cleaning
  • accessory fitting
  • electronic and mechanical checks

That still keeps it below refinery/coal/metal-treatment sources for cancer relevance, but it is no longer just a vague parking-lot suspicion:

  • plausible pathway: runoff from very large paved areas, plus traffic exhaust and particle wear
  • plausible process-based addition: cleaning and preparation effluents from the PDI center
  • still less plausible as a dominant regional carcinogen source than petroleum, coal/bitumen, welding, or chromate surface-treatment activities

What would make this hypothesis stronger:

  • evidence on the products used for cleaning / preparation
  • stormwater non-compliance, oily-water separator problems, or direct discharge concerns
  • unusually intense truck queueing/idling

6. Secondary active surface-treatment, coating, and specialized industrial sites

These sites do not look comparable to Donges, Chantiers, Airbus, or Yara in total regional footprint, but they matter for two reasons:

  • they increase the density of localized solvent / coating / metal-treatment sources in the Saint-Nazaire industrial fabric
  • their likely impacts are more localized, which means they can still matter a lot for workers, neighbors, runoff pathways, and future soil memory
Site Official clue Confirmed or strongly indicated activity Plausible carcinogen-relevant substances or byproducts Main release / diffusion logic Priority
OUEST COATING, Saint-Nazaire Prefecture pages updated 2024-12-11 and 2026-03-12 Treatment of large metallic pieces by metallisation Process-inferred plausible: metal-rich fumes and particulates from metallisation; abrasive-preparation dust; possible paint or sealer VOCs if complementary coating steps are used Mostly localized air emissions and dust fallout; filter waste; runoff from yard / workshop cleaning; worker and near-site exposure first Medium
RABAS PROTEC, Saint-Nazaire 2024 APC plus public non-technical note and a public sanitary-risk study Surface treatment of mainly machined aluminium parts, penetrant testing, spray painting, alkaline stripping, acid stripping, and TSA anodisation in a tank line Documented process chain strongly supports acids / bases, solvent VOCs, paint overspray, aluminum-bearing and mixed metal sludges; an official sanitary-risk file also explicitly refers to chromate de strontium, which makes this one of the stronger chrome-related candidates in the second ring Bath residues and sludge, paint-cabin exhaust, wastewater, localized drainage / soil risk if loss of containment occurs; mostly local rather than estuary-wide diffusion High within the second ring
EXXELIA, Saint-Nazaire 2023 APMD, 2025 levée, 2026 registration for an impregnation workshop, plus operator memory response Manufacture of aluminum and tantalum electrolytic capacitors; organic solvents used for electrolyte preparation; storage and impregnation in a closed-circuit installation by immersion Process-inferred plausible: organic-solvent vapors, electrolyte-related chemicals, impregnation residues, and small hazardous-waste streams; the closed-circuit configuration lowers ambient-diffuse plausibility but not indoor / accidental / waste relevance Mostly indoor / localized VOC and waste-handling pathway; lower plausibility for broad neighborhood exposure unless loss of confinement or poor ventilation occurs Low to medium
ARCELORMITTAL STEEL SERVICE CENTRES FRANCE, Saint-Nazaire 2024 APMD Mechanical working of metals Process-inferred plausible: metal fines, oil mist, cutting / grinding particulates, and runoff from scrap / metalworking zones; carcinogen relevance rises if thermal cutting or coated-metal work is present, which is not yet documented here Localized workshop air and runoff / soil pathway rather than broad atmospheric dispersion Low to medium
LYDALL THERMIQUE ACOUSTIQUE, Saint-Nazaire 2023 prefectural mise en demeure Manufacturing of thermal and acoustic screens by thermoforming and stamping of metals and plastics Process-inferred plausible: polymer-heating fumes, dust, and metalworking-fluid residues; carcinogen signal presently weaker than on coating / surface-treatment sites Mostly localized indoor air and waste / runoff pathway; lower confidence and lower priority Low
Société des Liants de l'Ouest, Montoir-de-Bretagne 2025 public inquiry for storage and production of road binders Emerging or future unit for storage and production of road binders Process-inferred plausible: bitumen fumes, PAHs including benzo(a)pyrene family screening, hydrocarbon vapors, and contaminated runoff from binder handling areas If the project is realized, this would strengthen the Montoir bitumen / binder cluster through localized air emissions and paved-yard runoff Medium to high as an emerging source candidate

Working interpretation:

  • this second ring of sites reinforces the idea that Saint-Nazaire should not be read only through the refinery / fertilizer / shipyard triad
  • there is also a more fragmented but real coating / metal-finishing / impregnation / machining cluster, especially relevant for:
    • localized worker and neighbor exposure
    • stormwater and drainage pathways
    • future legacy contamination
  • current priority inside this second ring is not flat:
    • RABAS PROTEC now stands out first because of the combination of anodisation / painting / stripping and the explicit official chromate de strontium health-risk file
    • OUEST COATING and Société des Liants de l'Ouest are the next most relevant process-based candidates
    • EXXELIA matters, but its risk picture currently looks narrower and more indoor / circuit-confined than the coating and binder sites

Legacy Contamination: Former or Long-Duration Industrial Footprints

This deserves a separate pass because cancer-relevant exposure can come from historic deposits even if present-day stack emissions are modest.

High-priority legacy footprints

  • Donges refinery:
    • continuous petroleum activity since 1930 strongly raises the probability of historic hydrocarbon, benzene-range compounds, PAHs, and oily sludge contamination in soils, drains, and estuarine sediments
  • Yara Montoir:
    • decades of fertilizer and hazardous-chemical activity make old contamination and wastewater/sediment issues plausible even if operations have changed
  • Penhoët / shipbuilding belt:
    • very long industrial history implies possible residues from blasting grit, lead/chromate paints, oils, solvents, asbestos waste, PCBs, and metal-rich sediment

Former or transitional sites identified so far

  • BASE de MONTOIR:
    • Georisques lists the site as "en fin d'exploitation"
    • this should be checked for the nature of former stored products and any residual soil issues
  • PBN (ex-SEMO MONTOIR):
    • explicitly a successor site; coal/coke/bitumen/mineral/asphalt history makes legacy PAH and hydrocarbon screening relevant
  • Former fuel depots, maintenance yards, port backlands, sidings, and repair areas:
    • likely important, but not yet individually extracted in this first pass

Best official databases for the next pass

  • CASIAS / former industrial sites inventory
  • SIS / secteurs d'information sur les sols
  • BASOL or successor state records for polluted sites and remediation
  • IREP / pollutant release data for declared emissions and transfers

Legacy Pass: Municipality-by-Municipality Inventory

This section is the first structured legacy pass. It is based mainly on official SIS / BASOL / Infosols and Georisques records. It is not yet exhaustive, but it already identifies multiple named sites with a stronger basis than the initial broad hypotheses.

Important caution:

  • legacy sections naturally contain more Documented contamination because SIS / BASOL are built around known pollution cases
  • active-site sections should remain broader than that, and must continue to include Process-inferred plausible carcinogens linked to the real industrial activity even where no official pollution file exists yet

Legacy-Site Table

Reading rule for this table:

  • when pollutants come directly from SIS / BASOL / Infosols, they should be read as Documented
  • when a row uses terms such as plausible or process-inferred, the pollutant is not directly disclosed for that site but remains consistent with the confirmed activity
  • some rows mix both, because a site has documented contamination plus additional process-inferred plausible residues
Municipality Site Historic activity Pollutants or residual contamination signaled Likely impacted media Priority for carcinogen mapping Notes
Saint-Nazaire Ancienne usine à gaz de Saint-Nazaire, rue Philippe Lebon, SIS 44SIS11655 / BASOL 44.0004 Gasworks HAP, BTEX, ammonium/ammoniac, cyanures; secondary DREAL summary also cites naphtalene, lead, arsenic, zinc Soils, groundwater, soil gas High Strong legacy carcinogen source candidate; residual contamination remains while the zone is being redeveloped
Saint-Nazaire PESYMO, SIS 44SIS11046 / BASOL 44.0119 Manufacture and storage of paints, resins, solvents, coatings Hydrocarbons, BTEX, traces of alcohol and acetone; groundwater impacted by COHV; surface waters with hydrocarbon traces, acetone, COV/COHV, fluoranthene, pyrene Soils, groundwater, surface water High Official Infosols notes an EQRS with unacceptable risk before rehabilitation and uncertainty on final completion of the plan
Saint-Nazaire TRANSPORTS DE LA BRIERE - groupe KEOLIS - ex CARIANE, SIS 44SIS11534 / BASOL 44.0160 Fuel storage and distribution, washing, mechanical repair, solvent cleaning Hydrocarbons, HAP of pyrolytic origin, elevated COT, antimony in eluate Soils; likely runoff and groundwater to verify Medium to high Relevant because fuel, washing, and vehicle maintenance combine oil, PAH, and stormwater pathways
Saint-Nazaire STEF Logistique Pays de Loire, Quai du Commerce, SIS 44SIS07726 / BASOL 44.0140 Historic food storage; later refrigerated warehouse; older military blockhouse reused HAP, HCT, lead, mercury Soils Medium to high Pollution appears partly historical and relatively diffuse in fill materials
Saint-Nazaire Ancienne zone des sous-traitants des Chantiers de l'Atlantique, Avenue Bourdelle, BASOL 44.0019 Former subcontractor area linked to shipbuilding yards, with old blasting residues Metals from blasting residues: As, Cr, Cu, Ni, Pb, Zn Soils; groundwater surveillance historically required High Strong legacy metal source near the port-industrial interface
Saint-Nazaire STOCKOUEST / Stockouest-Zone C, SIS 44SIS11631 / BASOL 44.0067 Petroleum depot built in 1961; heavy then light fuel; part of the site later used for vegetable oils Documented: hydrocarbons and related indices; Process-inferred plausible: petroleum residuals around former tanks, loading area, and truck station Soils and subsoil; groundwater migration not demonstrated in the official EQRS Medium to high Official Infosols documents soil impacts in Zone A and Zone C, biotreatment on part of the site, and a remaining SUP project for the untreated Zone A
Saint-Nazaire ANCIEN DEPOT SHELL, SIS 44SIS11647 / BASOL 44.0012 Former hydrocarbon depot operated by Shell from 1920 to 1976 Documented: residual hydrocarbons in soils and localized groundwater impact Soils, groundwater Medium to high Official Infosols states remediation works in 2001, five years of groundwater surveillance, a RUP, and residual pollution not compatible with all uses
Saint-Nazaire Station de déballastage (GPMNSN), SIS 44SIS11683 / BASOL 44.0120 Recovery of hydrocarbon-laden ballast sludge from ships; site out of service since 1998 Documented: phenols, HCT, HAP, metals, mono-aromatic hydrocarbons; residual hydrocarbons in soils after removal of 6000 t of polluted earth Soils; possible groundwater issue already managed within site history High Official Infosols concludes compatibility with a logistics / wind-hub use after clean cover and geotextile-type prescriptions, while keeping memory and precautions for any change of use
Saint-Nazaire Site petite pâture, SIS 44SIS11981 Former industrial / artisanal site in the Saint-Nazaire urban-port belt Localized impacts in soils: hydrocarbons, PCB, naphthalene, diffuse metals including copper, cadmium, lead, zinc and mercury; groundwater: important chlorinated-compound contamination and benzene in the center of the site, with weak nickel impact Soils, groundwater High Official SIS sheet states the site requires additional investigations and precautions in case of redevelopment or change of use
Saint-Nazaire Site rue des ardoises, SIS 44SIS11982 Storage of electrical material and waste-oil tanks Documented: punctual hydrocarbons, punctual lead, generalized copper impact Soils Medium Official Infosols requires precautions in case of redevelopment or change of use
Saint-Nazaire BRAIS DECAPAGE, SIS SSP41276200101 Metal treatment and coating site in ZI de Brais Documented: residual soil pollution remains after management; Process-inferred plausible: surface-treatment residues such as acids, solvents, and metal-bearing contamination depending on baths used Soils Medium Official SIS now states compatibility with artisanal or industrial use after management measures, which still marks a contamination memory in a metal-treatment activity
Saint-Nazaire GUYOMARD, NICOLE, SSP408344501 Metal sorting/transit site later used for storage of end-of-life vehicles (VHU) Documented: traces of hydrocarbons on soil and waste-burning areas; Process-inferred plausible: oils, metal-bearing runoff, VHU-related contamination Soils, runoff / ditch waters Medium Official Infosols records runoff from the site toward a ditch connected to the Brivet/Brière system and keeps the site in SIS because no soil diagnostic is yet available
Saint-Nazaire EATON - cessation d'activité, SSP400208101 Truck gearbox manufacturing plant active from 1977 to 2001 Documented: hydrocarbons in soils at the washing area and chip-storage area; possible residual oil impregnation near deep pits Soils; groundwater checked and described as satisfactory after works Medium Official Infosols records 961 tonnes of polluted soils excavated and a post-cleanup site considered banalisable, but with provisions in case of works or transfer
Montoir-de-Bretagne Société Chimique de la Grande Paroisse, SIS 44SIS11634 / BASOL 44.0021 Nitrogen fertilizer plant active from 1963 to 1994: ammonia, nitric acid, ammonium nitrate, compound fertilizers Arsenic contamination identified in the mid-1990s; broader fertilizer-process residues remain plausible Soils; possibly groundwater and runoff High Major long-duration chemical site; current Yara-related questions overlap with this legacy footprint
Montoir-de-Bretagne CDF ENERGIE, SIS 44SIS11020 Coal screening / mixing / storage site active from 1987 to January 2014 Documented: impacts mainly in hydrocarbons in soils and to a lesser extent in groundwater; Process-inferred plausible: coal dust, PAH, and metal traces Soils, shallow groundwater, dust, runoff Medium to high Official Infosols states excavation and treatment of impacted zones, industrial compatibility with ventilation constraints, and prohibition on small occupied rooms under 15 m²
Montoir-de-Bretagne Ancienne station-service TOTAL, BASOL 44.0088 Former service station dismantled around 2010-2011 BTEX, HCT Soils, groundwater Medium More localized than the bulk-energy zone, but a clear petroleum legacy site
Montoir-de-Bretagne BASE de MONTOIR, Georisques 0006302648 Former very large warehouse with polymer storage Carcinogen relevance appears lower than for hydrocarbon or coal sites, but runoff/fire residue questions remain open Site soils and runoff Low to medium End of operation recorded; lower priority unless incident history is found
Donges Ancienne décharge de Donges, SIS 44SIS11015 Former dump active from 1970 to 1988 Documented: waste mass present but pollutant potential not determined because the nature and quantity of buried waste are unknown Soils, runoff, possibly groundwater Medium Official Infosols requires conservation of the memory of waste burial and investigations before redevelopment
Donges Site de stockage des matériaux issus du naufrage de l'AMOCO CADIZ, SIS 44SIS11581 Confinement/storage of hydrocarbon-contaminated sand from the Amoco Cadiz spill Hydrocarbons totaux in historic waste; groundwater concentrations decreased over time according to official Infosols Soils and groundwater Medium Managed site, but still important as a persistent hydrocarbon deposit
Donges SUEZ RV OSIS OUEST, Georisques 0006302316 Former hazardous-waste operator site, now at end of operation Waste-related residual contamination is plausible; exact substances still to extract from public acts Soils, groundwater, runoff Medium to high Hazardous-waste history makes this a priority legacy file
Trignac Les Forges de Trignac, SIS 44SIS11714 / BASOL 44.0013 Former steelworks until 1944; later slag wool production until 1972; residual slag/crassier exploitation after that Metals, hydrocarbons, HAP, cyanides in groundwater Soils, groundwater High One of the strongest legacy contamination sites in the area
Trignac AFM, Georisques 0006302509 Transit of metal waste and hazardous waste, now at end of operation Metal contamination and waste-related residues plausible; site handled metal waste and hazardous waste Soils, runoff Medium to high Strong process link, but no published pollution file extracted yet
Trignac VM MATERIAUX, SIS 44SIS11611 / BASOL 44.0075 Former wood-packaging / scrap-yard / materials trading site; activities ceased in 2010 Documented: hydrocarbons near the old fuel tank and buildings, phytosanitary products / fungicides in the off-site ditch, metals and hydrocarbons in superficial fills Soils, off-site ditch waters Medium Official Infosols indicates part of the hydrocarbon pollution remains under buildings; industrial and residential compatibility were accepted, but not for sensitive ERP without further checks
Trignac Zone Océane - ancienne friche industrielle, SSP400229001 Former industrial brownfield with several sub-sites including fuel distribution, metal recovery, workshops, and contaminated blockhouse areas Documented: zone-by-zone mapping from official attachment shows Zone 1 = HCT + HAP, Zone 2 = HCT + HAP, Zone 3 = heavy metals, Zone 4 = HCT + HAP + COHV + BTEX + PCB Soils, limited groundwater, residual gas / building-transfer issues, construction phase High Official Infosols documents multiple depollution phases, no use of groundwater, ventilation and clean-cover prescriptions, and residual management at real-estate scale
Trignac Radio Frequency Services (RFS), SSP57946501 Telecommunications antennas and dish manufacturing site with surface treatment, sanding/metallization, and painting until 2023 Documented: widespread HCT, HAP, metals, naphthalene, and COHV / trichloroethylene; additional BTEX and PCB anomalies measured but not significant for soils Soils, possible shallow groundwater, limited indoor-air transfer Medium to high Official Infosols states the future use remains industrial and that the main polluted zones were treated in 2023, with no significant inhalation risk measured in sampled buildings

Municipality Notes

Saint-Nazaire

The legacy signal is much stronger here than the first pass suggested. Three particularly important patterns emerge:

  • former fuel and oil storage in the ville-port area: STOCKOUEST, ancient Shell depot, transport depot / washing / repair site
  • old gas and paint/solvent sites with more carcinogen-relevant contaminants: the former gasworks and PESYMO
  • shipyard-linked metallic residues: the former subcontractor zone of Chantiers de l'Atlantique
  • smaller but real legacy and runoff concerns at metal-treatment, VHU, and mechanical sites: BRAIS DECAPAGE, GUYOMARD, EATON, and rue des ardoises

This means Saint-Nazaire is not only exposed to active industrial sources. It also contains multiple urban or semi-urban legacy sites where redevelopment, excavation, or soil disturbance could matter.

Montoir-de-Bretagne

Montoir combines two legacy profiles:

  • large heavy-industrial / bulk-energy footprints, especially the old Grande Paroisse fertilizer site and CDF Energie coal screening
  • smaller petroleum legacy, such as the former TOTAL station

The official references confirm that the current port-chemical landscape sits on top of older industrial layers, not just present-day operations.

Donges

Donges is dominated by refinery-related legacy concerns, but the official legacy inventory also shows:

  • an old dump
  • a managed hydrocarbon-waste site linked to the Amoco Cadiz cleanup
  • a former hazardous-waste operator site

Even without a commune-by-commune CASIAS extraction yet, Donges already has enough official legacy markers to keep it in the highest-priority group.

Trignac

Les Forges de Trignac remains the dominant historic metallurgical legacy site, but Trignac now also clearly includes:

  • the Zone Océane brownfield with hydrocarbons, benzene, chlorinated solvents, and metals
  • the former RFS site with a 2023 cessation and documented HCT / HAP / metals / TCE-type contamination
  • VM Matériaux with hydrocarbons, fungicides, and metal-enriched fill

This makes Trignac more diverse than a single "Forges" storyline.

Active Sites With Documented Legacy-Type Soil or Groundwater Contamination

These are not former sites, but they matter because they add a contamination-memory layer on top of current industrial activity:

  • Donges refinery:
    • the Loire-Atlantique prefecture reported on 2024-09-10 that the 2022 gasoline leak involved 770 m3 of fuel, more than 11,000 tonnes of potentially contaminated soil were excavated, and hydrocarbon impacts were followed in groundwater and surface water
  • FAMAT, Saint-Nazaire:
    • official Infosols records a groundwater plume with trichloroethylene and other chlorinated solvents, plus hydrocarbons in soils, linked to past degreasing and oil-handling practices
  • AEROLIA (ex AIRBUS) Saint-Nazaire:
    • official Infosols records 2006 cutting-oil leaks in the machining workshop, with floating hydrocarbon phase in groundwater and long-term pumping / skimming / monitoring during continued operation

These sites belong in a separate category:

  • active facilities with ongoing or residual subsurface contamination

Local Artifact Inventory

User-provided local files now form part of the working evidence base and should be treated as preserved source material for the next sessions.

Local fetched cache

  • fetched_html/:
    • preserved local cache of directly fetched official Infosols pages and attachments
    • useful when the live Infosols site returns 404 in a browser
    • currently includes multiple SSP*.html pages and the Zone Océane attachments

Local page dumps

  • WEBPAGES.txt:
    • refreshed current dump added by the user
    • now preserves active Georisques establishment pages rather than the older Infosols set
    • confirmed contents include at least:
      • Airbus Atlantic
      • Chantiers de l'Atlantique
      • TotalEnergies Raffinage France
      • Yara France
      • FAMAT
    • also contains at least one later legacy-site text block near the end for RFS
  • WEBPAGES_0.txt:
    • earlier dump used mainly for Infosols pages

OCR caution for local PDFs

  • several of the user-provided inspection PDFs are image-based scans
  • pdftotext alone is not enough for all of them; OCR was needed on Airbus, Yara, and Total files
  • OCR can lose decimal commas or punctuation, so where an exact value matters the note should either:
    • use a number directly readable and clearly confirmed in the OCR text, or
    • keep the qualitative finding and mention that the raw value should be rechecked visually in the PDF before formal reuse

Local PDFs already mapped

  • e2daapHaZIzBy1J9hViBY7pxL0uNrNm6.pdf:
    • Airbus Atlantic
    • inspection of 2025-08-08
    • reference N5-2025-0895
  • OzYVwdDxSkU5kE7R4LRqypFJKalaa4T1.pdf:
    • Chantiers de l'Atlantique
    • inspection of 2025-06-30
    • reference 2025-0454-RAPPORTpubliable
  • fafxu5gb4quoOqdafk11QizcoZoQWhXZ.pdf:
    • Chantiers de l'Atlantique
    • inspection of 2024-06-24
    • reference N6-2024-0686
  • EgyNINlNCban7tyRa2sXRqrl1AOK7wnC.pdf:
    • Yara France
    • inspection of 2025-06-12
    • reference N2-2025-655
  • sKdHtx2PSUTotJLFZnHHSbBmGoPBixgs.pdf:
    • Yara France
    • inspection of 2025-12-03
    • reference SRNT-2026-0021
  • KarUdarWJEHtxoibNp9yfDfAPTM3CRyX.pdf:
    • TotalEnergies Raffinage France
    • inspection of 2025-12-12
    • reference N2-2026-0032
  • c9f74snaVsym2p95z8HjlVw5nsY2sbJ7.pdf:
    • TotalEnergies Raffinage France
    • inspection of 2025-11-06
    • reference N2-2025-1368
  • zone_oceane_polluants_travaux.pdf:
    • official Infosols attachment for Zone Océane
  • zone_oceane_zones_dep.pdf:
    • official Infosols attachment for Zone Océane

First Inspection and Compliance Signals for Active Sites

This section is not a pollutant inventory by itself. It is a prioritization aid. Repeated inspections, repeated mises en demeure, and pollution-related APCs do not prove carcinogenic emissions on their own, but they are strong signals for where a deeper pollutant review is justified.

TotalEnergies Raffinage France, Donges

Official Georisques data consulted on 2026-03-29 shows:

  • very frequent inspections across 2024 and 2025, with the latest visible inspection dated 2025-12-12
  • public acts including:
    • 2024-02-20 - TOTAL - APMD double parois
    • 18-12-2023 - APMD Total - Tuyauteries
    • 2023-07-19 - APMD cuvettes de rétention - TotalEnergies Donges
    • 2023-04-12 TOTAL - APC Pollutions Bossènes
    • 2025-11-20 - TotalEnergies - APC 488_PFAS
  • the current administrative rubrics also explicitly include large amounts of:
    • petroleum products and flammable liquids
    • hydrogen sulfide
    • combustion installations
    • coal / coke / tar / asphalt / bituminous materials under rubrique 4801
  • the user-provided local PDFs add two more recent public inspection reports:
    • 2025-11-06 (N2-2025-1368)
    • 2025-12-12 (N2-2026-0032)
  • the refreshed local WEBPAGES.txt also confirms current rubrics for:
    • petroleum refining (3120)
    • combustion (3110)
    • hydrogen sulfide (4737)
    • coal / coke / tar / asphalt / bituminous materials under rubrique 4801 with 53030 t
  • OCR extraction of the 2025 local reports shows:
    • the 2025-11-06 inspection combined an action nationale 2025 on environmental sampling in case of fire with a review of the acid-gas system risk-control measures
    • the same report requested updates on the POI, lists of substances and decomposition products to be searched in environmental sampling, staff competence for sampling, and follow-up on a water leak
    • the 2025-11-06 report also states that two measures of risk control on the acid-gas system were not effective as configured and led to a proposed mise en demeure
    • the 2025-12-12 inspection confirmed completion of the third phase of retention-basin impermeability works by the regulatory deadline, while still demanding justifications on crown dimensioning, associated collection volumes, and overfill-prevention instrumentation on several tanks

Interpretation:

  • this reinforces both the Documented pollution-memory angle and the Process-inferred plausible angle for benzene, VOCs, PAHs, bituminous compounds, sulfur compounds, and subsurface hydrocarbon issues
  • the 2025 local reports also show that chronic infrastructure integrity, liquid containment, emergency-preparedness sampling, and accident-to-environment interfaces remain active regulatory themes at the refinery, not just historical spill memory

Yara France, Montoir-de-Bretagne

Official Georisques data consulted on 2026-03-29 shows:

  • repeated inspections from 2022 through 2025, with the latest visible inspection dated 2025-12-03
  • public acts including:
    • 2024-02-20 - YARA - APMD
    • 2023.04.12 - YARA - APMD
    • APMD 2019 RA
    • APMD 2019 RC
    • APMD 2018
    • 2024-07-31 - APC évacuation ammoniac
    • 2025-05-28 - YARA - APC Trans phase 1
  • current rubrics still covering acids, bases, fertilizer manufacture, ammonium nitrate, solid fertilizers, and ammonia
  • the refreshed local WEBPAGES.txt confirms that the administrative page still presents the site as an authorized fertilizer plant with rubrics for:
    • acids and bases (3420)
    • fertilizer manufacture (3430)
    • ammonium nitrate and solid fertilizers (4701, 4702)
    • ammonia (4735)
  • the user-provided local PDFs add two inspection reports:
    • 2025-06-12 (N2-2025-655)
    • 2025-12-03 (SRNT-2026-0021)
  • OCR extraction of those reports shows:
    • the 2025-06-12 inspection followed a mise en demeure and a sanction context, and focused heavily on water management during transformation phase 1
    • the same report records 151 exceedances of the authorized daily nitrogen flux and 5 exceedances of the phosphorus flux in stormwater between 2024-10-01 and 2025-04-30, with a proposal to continue an astreinte
    • the 2025-06-12 report also states that garage-area wash water is now confined, pumped, and treated as waste instead of being discharged as industrial effluent to the Loire, and that transformation phase 2 must again document impacts on surface water and groundwater
    • the 2025-12-03 inspection shifted to partial-cessation and soils topics, with an ANTEA diagnostic on soils, groundwater, soil gas, and witness borings in the cessation perimeter
    • the same December report states that PFAS results for groundwater would be issued separately, that semiannual groundwater monitoring remains in place, and that demolition works are to be accompanied by on-site air monitoring for NH3, PM10, and PM2.5

Interpretation:

  • even if the site is transitioning away from past production, the official administrative and inspection trail confirms that Yara remains a high-priority site for a combined Documented and Process-inferred plausible review
  • for carcinogens specifically, the strongest angles remain legacy contamination, trace metals, acid-process residues, and any contaminated dust or runoff rather than ammonia itself
  • the recent local reports also show that the site’s transformation itself creates a separate water-management, stormwater exceedance, demolition, and residual-soils phase that should be tracked separately from the former production phase

PBN (ex-SEMO MONTOIR), Montoir-de-Bretagne

Official Georisques data consulted on 2026-03-29 shows:

  • inspections on 2022-10-19 and 2025-03-24
  • administrative rubrics covering:
    • hot-mix asphalt plant
    • mineral crushing / transit
    • coal / coke / tar / asphalt / bituminous materials under rubrique 4801
  • an APC dated 2023-02-20

Interpretation:

  • even if no site-specific carcinogen pollution file has yet been extracted, the process basis is strong enough to keep PAHs, benzo(a)pyrene, bitumen-related fumes, and mineral dust in the Process-inferred plausible category at high priority

Airbus Atlantic, Saint-Nazaire

Official Georisques data consulted on 2026-03-29 shows:

  • repeated inspections from 2022 through 2025, with the latest visible inspection dated 2025-08-08
  • the published 2022 inspection report states that the Saint-Nazaire site uses paint cabins where chromate-based paints are applied, and that the inspection focused mainly on autosurveillance of emissions from those cabins
  • public acts including:
    • 2025_12_08_APC_Airbus Atlantic_St Nazaire
    • AP AUTO 2018
    • several earlier APCs and regularization reports
  • current administrative rubrics explicitly covering:
    • surface cleaning
    • other coatings
    • treatment of surfaces under rubrique 2565 and 3260
    • abrasive materials
    • paint / varnish / glue application under rubrique 2940
    • large inventories of acute-toxicity substances
  • the user-provided local PDF N5-2025-0895 confirms that the 2025-08-08 inspection was triggered by an inopiné control performed between 2025-05-20 and 2025-05-23 on atmospheric discharges from the paint cabins
  • OCR extraction of that 2025 report shows:
    • the April 2025 autosurveillance reported a total chrome-VI flux of 0.4237 g/h for the paint-emission points covered, above the prefectural limit of 0.3 g/h, which led to a proposed mise en demeure
    • the report also demanded new measurements under representative worst-case chromate-paint use, checks on sampling duration and blanks, and updated maintenance / filtration instructions
    • the inopiné DEKRA control found abnormally high chrome-VI fluxes on at least the SUNKISS 2 and SIMA cabins, but the report itself also flags methodological weaknesses in that control, including lack of measurement blanks and issues in sampling duration / overlap
    • this makes the 2025 Airbus report one of the strongest active-site Documented chrome-VI items in the whole workspace

Interpretation:

  • this is a strong Process-inferred plausible source cluster for chromium(VI)-type surface-treatment issues, solvent / coating emissions, abrasive dust, and wastewater or sludge from treatment lines
  • the separate Infosols history for AEROLIA reinforces the need to treat the Airbus family of sites as both an active-emission and residual-soil / groundwater topic
  • the local 2025 report upgrades paint-cabin atmospheric chrome-VI releases from a theoretical concern to a directly monitored non-compliance topic

Chantiers de l'Atlantique SA, Saint-Nazaire

Official Georisques data consulted on 2026-03-29 shows:

  • repeated inspections from 2022 through 2025, with the latest visible inspection dated 2025-06-30
  • the published 2022 inspection report explicitly notes continuity with earlier inspections and a site visit devoted to the site COV balance
  • public acts including:
    • 2023-07-28 APMD
    • 2024-03-29 AP levée de mise en demeure
    • 2024-02-19 - Les Chantiers de l'Atlantique - APC
    • 2025-01-20 APC
    • 2025-10-13_APC CHANTIERS DE L'ATLANTIQUE
  • current rubrics explicitly covering:
    • large-scale coating / painting
    • abrasive materials
    • combustion
    • treatment of surfaces using organic solvents under rubrique 3670
    • flammable liquids and hazardous-for-the-aquatic-environment substances
  • the refreshed local WEBPAGES.txt confirms that rubrique 3670 is authorized at 600 t/an, which makes the solvent / coating dimension of the site unusually explicit in the current administrative record
  • the user-provided local PDFs add two detailed inspection reports:
    • 2024-06-24 (N6-2024-0686) under national Air-COV and PFAS actions
    • 2025-06-30 (2025-0454-RAPPORTpubliable)
  • OCR extraction of those reports shows:
    • the 2024 report scrutinized welding-fume characterization, including chrome VI, COV substances including CMR cases, PFAS lists and analyses, and waste storage exposed to rainwater with drainage toward a hydrocarbon separator before Loire discharge
    • the 2025 report states that the total 2024 COV ratio was compliant (0.252 kg COV / kg d’extraits secs), but still requested justifications on thermal treatment of solvent emissions, stock-state management, and PFAS monitoring in water, plus an action corrective on tri 5 flux

Interpretation:

  • together with the legacy subcontractor-zone contamination, this makes Chantiers one of the clearest combined Documented plus Process-inferred plausible sources for metal-bearing dust, paint / solvent emissions, abrasive residues, and runoff toward port soils and sediments
  • the 2024 and 2025 local reports make the Chantiers site one of the richest active-source dossiers in the workspace because they directly connect COV, chrome VI in welding-fume analysis, PFAS in water, and outdoor waste-storage/runoff issues

FAMAT, Saint-Nazaire

Official Georisques data consulted on 2026-03-29 shows:

  • repeated inspections in 2022, 2023, and 2025, with the latest visible inspection dated 2025-04-17
  • several APCs remain public
  • the refreshed local WEBPAGES.txt gives a more precise process picture than before, with active rubrics for:
    • heat treatment of metals and alloys (2561)
    • surface treatment (2565) with 46700 L
    • abrasive materials (2575)
    • treatment / development of photosensitive surfaces (2950) with 3500 m2
    • acute inhalation-toxicity substances (4130) and oxidizing liquids (4441)

Interpretation:

  • FAMAT is not among the very largest regional candidates, but it is stronger than a generic machining site because the current administrative record explicitly includes active surface-treatment and heat-treatment operations
  • this keeps FAMAT relevant both for Documented solvent-groundwater legacy and for Process-inferred plausible emissions or wastes involving degreasing products, metal-bearing residues, abrasive dust, and possibly chromium- or nickel-related treatment residues depending on the actual baths and alloys used

Radio Frequency Services (RFS), Trignac

Official DREAL inspection material consulted on 2026-03-29 shows:

  • an inspection on 2022-09-23 in the context of the zone-study source inventory
  • the Trignac site manufactures parabolic antennas and includes:
    • cleaning of parts by immersion
    • spray cleaning of antennas
    • a paint booth

Interpretation:

  • RFS is not a top-tier source compared with refinery, shipbuilding, or Yara
  • but it is a credible lower-tier Process-inferred plausible source for detergent / solvent emissions, paint-related VOCs, and potentially metal-treatment residues or wastewater associated with cleaning and coating operations

Remaining Official Points To Clarify

Most of the earlier SIS / Infosols queue has now been resolved by direct fetch of the official pages.

Still worth clarifying with more documents or attachments:

  • Station de déballastage:
    • the official page is now resolved, but downloadable attachments or detailed plans would help complete the site history
  • Site petite pâture:
    • the base SIS sheet is resolved, but the full administrative history remains useful
  • active-site APC and monitoring bundles:
    • Airbus Atlantic
    • Chantiers de l'Atlantique
    • TotalEnergies Donges
    • Yara
    • FAMAT

Important linkage note:

  • the 2023 Loire-Atlantique SIS modification order lists Site rue des ardoises, Site petite pâture, GUYOMARD, EATON, Les Forges de Trignac, and VM MATERIAUX in the same regulatory context as Société Chimique de la Grande Paroisse
  • this is useful for tracking administrative history, but it should not be over-read as proof that all of these sites are merely off-site plumes from Grande Paroisse
  • the direct Infosols pages now show that GUYOMARD, EATON, VM MATERIAUX, Zone Océane, and RFS each have their own distinct industrial histories and contamination logic

Human Fetch Queue

Most of the original manual queue is no longer needed because:

  • the official Infosols pages were fetched directly
  • WEBPAGES.txt preserves additional online page content locally
  • several Georisques inspection PDFs are already present in the workspace

The remaining useful manual fetches are now mostly:

  • APC / APMD / porter-à-connaissance documents not yet downloaded from the Georisques site bundles
  • any missing FAMAT bundle documents
  • any missing maps or attachments for Station de déballastage or Grande-Paroisse-related SIS records

Priority 2: active-site document packages

For these sites, the Georisques detail pages allow a human to download the public ZIP of all available documents. This is useful to extract:

  • COV monitoring
  • chromates / surface-treatment controls
  • wastewater and runoff prescriptions
  • solvent, paint, and sludge handling conditions

Best targets:

Priority 3: remaining useful attachments

Best targets:

  • any downloadable maps / plans linked from Shell, Station de déballastage, or Grande Paroisse-related SIS pages if available
  • any APC / APMD PDFs that explain the inspection follow-up for Airbus, Chantiers, Total, Yara, or FAMAT

If you fetch manually, the most useful outputs for the next pass are:

  • pollutant list
  • impacted media
  • restrictions of use / SUP
  • current land use
  • whether the site is treated, monitored, or still under investigation

Note:

  • if an online Infosols page returns 404, check first whether the content is already preserved in WEBPAGES.txt, WEBPAGES_0.txt, or the local HTML files before retrying the live URL

Initial Priority Ranking

Highest priority for a carcinogen-focused map:

  1. Donges refinery
  2. Montoir coal/bitumen/mineral handling and PBN-type activities
  3. Shipbuilding and associated metal-treatment yards
  4. Aerospace surface-treatment and welding cluster

Second tier:

  1. Yara, mainly for possible legacy contamination and metals/acid-process questions
  2. Cement/mineral handling
  3. Agro-bulk handling where dust, diesel, or specific contaminated cargoes are relevant

Lower priority for carcinogens, but still worth tracking:

  1. LNG terminal
  2. Vehicle storage/logistics lots

Main Gaps

  • I have started the municipality-by-municipality legacy pass from SIS / BASOL / Infosols, but CASIAS extraction is still incomplete
  • I have not yet cross-checked declared emissions in IREP for benzene, PAHs, chromium, nickel, cadmium, or particulates
  • I have not yet added a wind-direction or hydrology layer, which matters a lot for actual diffusion toward homes
  • this first pass focuses on plausible source categories, not measured ambient concentrations
  • most base Infosols pages are now resolved, but attachment-level documents and Georisques ZIP bundles still need extraction
  • some active industrial processes still need a broader "possible emissions/byproducts" pass so that the note does not become biased toward disclosed legacy pollution only

Sources Used

Official and primary sources used for this first pass:

Secondary contextual source used only to flag a date mismatch on Yara activity:

Secondary source used only to recover otherwise blocked details or URL patterns for some soil-pollution records:

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