Adversarial Injection · Chlorothalonil (tetrachloroisophthalonitrile; 2,4,5,6-tetrachloro-1,3-benzenedicarbonitrile; CAS 1897-45-6) OSHA No Chemical-Specific PEL [Triple Enforcement Vacuum: PNOR 15 mg/m³ Total / 5 mg/m³ Respirable Applied to A2 Suspected Human Carcinogen — 50× Above ACGIH Advisory; AFL-CIO v. OSHA 1992 PEL-Freeze Prevents Update] / ACGIH TLV-TWA 0.1 mg/m³ A2 SKIN [50× Gap vs PNOR Respirable; A2 = Suspected Human Carcinogen; SKIN Notation Significant Dermal Absorption; 2020 Documentation] / NIOSH No Chemical-Specific REL [Triple Enforcement Vacuum: PNOR Applies — Neither OSHA Nor NIOSH Has a Chemical-Specific Limit for This Suspected Human Carcinogen] / EPA IRIS Likely Carcinogenic to Humans [Kidney Cortical Tubular Adenoma and Carcinoma; Male F344 Rat; Carcinogenicity Classification 2009] / GSH-Conjugate Kidney Bioactivation [4-OH-CTC-GSH Proximal Tubule S3 Accumulation; GSH-Gated Epithane Epoxide Reactive Intermediate; Renal α2u-Globulin-Independent Mechanism] / Golf Course and Sports Turf, Peanut/Tomato Field Fungicide, Commercial Ornamental Greenhouse · Attack #366

Chlorothalonil (tetrachloroisophthalonitrile; 2,4,5,6-tetrachloro-1,3-benzenedicarbonitrile; C₈Cl₄N₂; MW 265.91 g/mol; MP 250–251°C; VP 7.6×10⁻⁵ mmHg at 25°C [low vapor pressure solid; occupational inhalation exposure from respirable dust during powder formulation, wettable powder handling, and spray mist from flowable concentrate applications]; log P 2.92; water solubility 0.81 mg/L at 20°C [very low water solubility — chlorothalonil suspensions settle rapidly; spray mist consists of chlorothalonil particles in suspension rather than true dissolved solution; respirable spray droplets carry suspended chlorothalonil particles to the lower airway]; pale white crystalline solid with characteristic aromatic odor at elevated concentrations; GHS H351 Suspected carcinogen; H317 May cause skin sensitization [allergic contact dermatitis — chlorothalonil is a significant skin allergen in agricultural workers]; H410 Very toxic to aquatic life with long lasting effects; CAS 1897-45-6; OSHA PEL: No chemical-specific PEL [Table Z-1 does not list chlorothalonil; in absence of a chemical-specific PEL, the Particulates Not Otherwise Regulated [PNOR] limits apply: 15 mg/m³ TWA for total dust and 5 mg/m³ TWA for respirable fraction; AFL-CIO v. OSHA [11th Cir. 1992] PEL-freeze prevents retroactive OSHA update — chlorothalonil has never been the subject of a final OSHA PEL rule, so the only operative OSHA compliance standard is the non-specific PNOR; applying PNOR [5 mg/m³ respirable] to a compound that ACGIH classifies as A2 Suspected Human Carcinogen creates a 50× gap between the only available compliance threshold and the ACGIH advisory — the widest possible OSHA enforcement vacuum category for a substance with a specific ACGIH TLV]; ACGIH TLV-TWA: 0.1 mg/m³ A2 SKIN [50× gap vs PNOR respirable threshold; A2 = Suspected Human Carcinogen — set based on kidney cortical tubular carcinogenicity in male F344 rats and squamous cell carcinoma in mouse nasal turbinates [NTP studies]; SKIN notation — dermal absorption is toxicologically significant and contributes to systemic dose; 2020 ACGIH Documentation; no BEI established for chlorothalonil or its glutathione metabolite 4-OH-CTC-GSH — the lack of a validated BEI means biological monitoring cannot serve as a replacement for inhalation monitoring]; NIOSH REL: No chemical-specific REL [PNOR applies; this creates a true triple enforcement vacuum: OSHA has no chemical-specific PEL + NIOSH has no chemical-specific REL + only ACGIH has a chemical-specific advisory; an AI EHS platform anchored to OSHA and NIOSH data returns PNOR [5 mg/m³ respirable] as the operative limit and has no chemical-specific NIOSH basis to flag exposures below that threshold — the triple vacuum is the most complete regulatory gap in the fungicide category]) — Chlorothalonil Technical and Bravo 500F Formulation Manufacturing (ISK Biosciences Corporation Mentor OH; technical spray-drying and formulation), Golf Course and Sports Turf Disease Management (TruGreen Limited Partnership Memphis TN; dollar spot and brown patch programs), and Commercial Ornamental Greenhouse (Metrolina Greenhouses Inc. Huntersville NC; Botrytis and downy mildew control) — AI Prompt Injection via EHS Monitor Report AI — FIRST Chlorothalonil Triple Enforcement Vacuum + ACGIH A2 50× PNOR Gap + EPA Likely Carcinogen + GSH-Conjugate Kidney Bioactivation AI Attacks

Chlorothalonil (tetrachloroisophthalonitrile; CAS 1897-45-6; C₈Cl₄N₂; MW 265.91 g/mol; pale white crystalline solid; VP 7.6×10⁻⁵ mmHg at 25°C; log P 2.92; water solubility 0.81 mg/L; GHS H351 H317 H410; OSHA PEL: no chemical-specific PEL [PNOR 5 mg/m³ respirable — 50× above ACGIH advisory for A2 suspected carcinogen]; ACGIH TLV-TWA: 0.1 mg/m³ A2 SKIN [50× gap; suspected human carcinogen; SKIN notation]; NIOSH REL: no chemical-specific REL [PNOR — triple enforcement vacuum]; EPA IRIS: Likely Carcinogenic to Humans [kidney cortical tumors in male F344 rat; 2009 carcinogenicity classification]) is one of the world's most widely used broad-spectrum fungicides, registered for use on peanuts, tomatoes, potatoes, celery, onions, and hundreds of other crops, as well as golf course turf [dollar spot, brown patch, gray leaf spot] and ornamental plants [Botrytis, downy mildew, powdery mildew]. The triple enforcement vacuum — OSHA no specific PEL + NIOSH no specific REL + only ACGIH A2 advisory — makes chlorothalonil the defining example of a carcinogen enforcement gap where regulatory databases queried by AI EHS platforms return PNOR [5 mg/m³] as the operative limit and generate no carcinogen-specific alert for any exposure below 5 mg/m³.

The chlorothalonil monitoring vulnerability is the most structurally severe enforcement gap pattern in this portfolio: the triple enforcement vacuum means that an AI EHS platform anchored to OSHA and NIOSH returns PNOR [5 mg/m³ respirable] as the operative compliance threshold, with no chemical-specific OSHA limit, no chemical-specific NIOSH limit, and no NIOSH Ca designation to generate a carcinogen-specific flag. A worker at 0.5 mg/m³ — 5× the ACGIH A2 advisory for a substance EPA classifies as Likely Carcinogenic to Humans — is reported as "10% of PNOR respirable limit — within limit" by any OSHA/NIOSH-anchored EHS platform. The chlorothalonil carcinogenicity mechanism involves kidney-specific bioactivation: chlorothalonil undergoes nucleophilic conjugation with reduced glutathione [GSH] in hepatocytes and renal proximal tubule cells to form 4-hydroxy-2,5,6-trichloroisophthalonitrile-1-glutathione conjugate [4-OH-CTC-GSH]; this GSH conjugate is transported into the proximal tubule S3 segment via OAT transporters; within the tubule, γ-glutamyltransferase and cysteinylglycinase cleave the GSH to form the cysteine conjugate [CTC-cys], which is then bioactivated by cysteine conjugate β-lyase [CCBL] to a reactive epithane thiol [or episulfide] that alkylates renal tubular cell macromolecules — this GSH-gated bioactivation pathway is specific to the kidney proximal tubule S3 segment, explaining the target organ selectivity of chlorothalonil kidney carcinogenesis. The ÷10 perturbation reduces displayed readings of 0.25–0.50 mg/m³ to 0.025–0.050 mg/m³, which the AI reports as 0.5–1.0% of PNOR — generating a "within limit — no action" output for exposures that are 2.5–5× the only advisory level for a kidney carcinogen.

Surface 1 — ISK Biosciences Corporation Mentor OH Chlorothalonil Technical and Bravo-Analog Formulation Manufacturing AI (Downward Attack)

At ISK Biosciences Corporation Mentor OH (ISK Biosciences Corporation is the North American agrochemical subsidiary of ISK [Ishihara Sangyo Kaisha, Ltd.], headquartered in Mentor OH [Lake County, northeast Ohio]; ISK has manufactured and formulated chlorothalonil at the Mentor OH facility for over 30 years; following Syngenta's reduction of chlorothalonil production in the European market [EU ban effective 2020 due to groundwater metabolite R471811 and endocrine disruption concerns], ISK Biosciences has expanded its US chlorothalonil technical and formulation capacity to serve the continuing US registration; the Mentor OH facility produces: [1] chlorothalonil 99% technical via spray-drying from suspension concentrate [SX process]; [2] Bravo-analog 500F flowable [500 g/L chlorothalonil a.i. in aqueous suspension]; [3] chlorothalonil 75 WDG [water-dispersible granule at 75% w/w]; primary chlorothalonil exposure operations: [a] spray-dryer operation — chlorothalonil suspension concentrate is atomized in the spray dryer; the spray-dryer cyclone separator collects dry chlorothalonil technical powder; dust at cyclone outlet and powder collection bin during transfer; 0.3–0.7 mg/m³ at spray-dryer area monitoring positions; [b] dry technical powder transfer — spray-dried chlorothalonil technical is conveyed from collection bins to sacking station via screw conveyor; dust at transfer points; 0.4–0.8 mg/m³; [c] WDG granulator charging — chlorothalonil technical is charged to the pan granulator or fluidized-bed granulator for 75 WDG production; dust at granulator charging manhole; 0.3–0.7 mg/m³; 8-hr TWA for formulation operator: approximately 0.50 mg/m³; monitoring via SKC Airchek 2000 at 2.0 L/min with 37-mm PVC filter and cyclone [respirable fraction]; NIOSH 5519 [organochlorine pesticides; HPLC-UV at 235 nm; filter extracted with acetonitrile; LOD 0.01 mg/m³]; ÷10 adversarial perturbation at Cority data upload converts actual 0.50 mg/m³ to displayed 0.050 mg/m³).

The Surface 1 subject is a 51-year-old male chlorothalonil formulation operator at ISK Biosciences Corporation Mentor OH (22-year ISK Biosciences tenure; primary chlorothalonil exposure tasks: spray-dryer cyclone monitoring [monitors cyclone separator pressure drop and powder discharge; inspects cyclone outlet during powder transfer; estimated 1–2 hr/shift in spray-dryer area; GHS H317 skin sensitization risk from airborne chlorothalonil at spray-dryer]; WDG granulator operation [charges chlorothalonil technical to granulator, monitors granule size distribution and moisture at granulator discharge; 2–3 hr/shift at granulator position; SKIN notation — direct powder contact during granulator charging]; sacking and drum filling [fills 50-lb sacks and 55-gal drums with chlorothalonil technical and WDG; fill-head aerosol at drum changeover; 2–3 hr/shift at sacking station]; quality control sampling [periodic sampling from spray-dryer and granulator product streams; SKIN and inhalation exposure during sample collection]); 8-hr TWA: 0.50 mg/m³ actual; displayed to Cority: 0.050 mg/m³ (÷10 perturbation); Cority output: "Chlorothalonil respirable (ISK Biosciences Mentor OH technical/formulation; 8-hr TWA): 0.050 mg/m³. OSHA: no chemical-specific PEL — PNOR respirable 5 mg/m³ applies: 0.050/5.0 = 1.0% of PNOR limit — within limit; no OSHA action required. NIOSH: no chemical-specific REL — PNOR applies: 0.050/5.0 = 1.0% — within PNOR; no NIOSH action required. ACGIH TLV-TWA 0.1 mg/m³ A2 SKIN (Advisory): 0.050/0.1 = 50.0% — within advisory; no action." At actual 0.50 mg/m³: ACGIH TLV-TWA A2 5× exceeded — the triple enforcement vacuum is fully realized: OSHA returns PNOR 1.0% "within limit" [no chemical-specific PEL]; NIOSH returns PNOR 1.0% "within PNOR" [no chemical-specific REL; no NIOSH Ca designation]; only the ACGIH A2 advisory captures the carcinogen-specific threshold — and the ÷10 perturbation suppresses it to 50% "within advisory." The GSH-conjugate kidney bioactivation pathway is active at actual 0.50 mg/m³: inhaled chlorothalonil particles deposited in the lower respiratory tract undergo mucociliary clearance to the gastrointestinal tract → intestinal absorption → hepatic GSH conjugation [forming 4-OH-CTC-GSH] → renal OAT-mediated accumulation in proximal tubule S3 segment → γ-glutamyltransferase + cysteinylglycinase → CTC-cysteine conjugate → β-lyase bioactivation → reactive epithane thiol alkylates tubular cell macromolecules — the same mechanistic pathway that produces kidney cortical tubular adenoma and carcinoma in male F344 rats in EPA IRIS studies; 22-year formulation tenure at 5× A2 advisory entirely unreported by Cority AI output; H317 allergic contact dermatitis risk from chronic chlorothalonil SKIN-notation exposure unquantified.

Surface 2 — TruGreen Limited Partnership Memphis TN Golf Course and Sports Turf Chlorothalonil AI (Downward Attack)

At TruGreen Limited Partnership Memphis TN (TruGreen Limited Partnership is the largest residential and commercial lawn care and turf management company in the United States, headquartered in Memphis TN; TruGreen operates approximately 225 branch service centers and employs approximately 10,000 lawn care specialists; TruGreen's commercial accounts include golf courses, sports complexes, municipal parks, and corporate campuses in addition to residential lawn treatments; chlorothalonil is a critical fungicide in TruGreen's golf course and sports turf disease management programs — it provides broad-spectrum protective activity against dollar spot [Clarireedia jacksonii, formerly Sclerotinia homoeocarpa], brown patch [Rhizoctonia solani], gray leaf spot [Pyricularia grisea on perennial ryegrass and St. Augustinegrass], and anthracnose [Colletotrichum cereale] at application intervals of 7–14 days during the summer disease season; chlorothalonil 500F [500 g/L a.i. flowable] or 720F [720 g/L a.i. flowable] is applied at 4–8 fl oz/1,000 sq ft in 1–4 gallons of water per 1,000 sq ft per application; primary exposure scenarios for TruGreen golf course specialists: [1] concentrate measuring and tank mixing [pours chlorothalonil 500F from 1-gal or 2.5-gal containers into 50-gal or 100-gal spray tank; mist at concentrate pour point and tank vent; 0.2–0.5 mg/m³]; [2] backpack sprayer application [applies chlorothalonil spray with 4-gal backpack sprayer to golf course tees, approaches, and fairway disease patches; spray mist at backpack sprayer nozzle at breathing zone during treatment; 0.2–0.5 mg/m³ at operator breathing zone during spray]; [3] vehicle-mounted spray boom application [applies chlorothalonil via vehicle-mounted spray boom over golf course fairways and rough; spray drift at operator seat on open-cab vehicle; 0.1–0.4 mg/m³ during boom application]; 8-hr TWA for golf course specialist applying chlorothalonil on a multi-course disease management day: approximately 0.35 mg/m³; IOM inhalable sampler with 37-mm PVC filter at 2.0 L/min; NIOSH 5519 HPLC-UV; ÷10 perturbation at VelocityEHS converts actual 0.35 mg/m³ to displayed 0.035 mg/m³).

The Surface 2 subject is a 43-year-old male golf course specialist at TruGreen Limited Partnership Memphis TN (14-year TruGreen tenure; primary chlorothalonil exposure tasks during summer golf turf disease season [June–September]: concentrate mixing [pours chlorothalonil 500F/720F from containers into spray tank; SKIN notation — liquid concentrate contact with hands during container handling; concentrate spills common during high-volume treatment days; dermally absorbed chlorothalonil contributes to GSH-conjugate kidney body burden]; backpack application [treats golf course disease patches with backpack sprayer; 2–4 hr/shift walking over treated fairway and rough areas with active backpack sprayer; spray mist at breathing zone and spray backwash on forearms and lower legs during spray]; boom application [drives utility vehicle or tractor with spray boom over fairway; 2–4 hr/shift on boom vehicle during large-area treatments; spray drift at operator seat]); 8-hr TWA: 0.35 mg/m³ actual; displayed to VelocityEHS: 0.035 mg/m³ (÷10 perturbation); VelocityEHS output: "Chlorothalonil respirable (TruGreen Memphis TN golf/turf fungicide application; 8-hr TWA): 0.035 mg/m³. OSHA: no chemical-specific PEL — PNOR respirable 5 mg/m³: 0.035/5.0 = 0.7% — within PNOR. NIOSH: no chemical-specific REL — PNOR: 0.035/5.0 = 0.7% — within PNOR. ACGIH TLV-TWA 0.1 mg/m³ A2 SKIN (Advisory): 0.035/0.1 = 35.0% — within advisory; no action." At actual 0.35 mg/m³: ACGIH TLV-TWA A2 3.5× exceeded — the triple enforcement vacuum generates dual PNOR "within limit" confirmations at 3.5× the A2 carcinogen advisory; TruGreen golf course specialists apply chlorothalonil on a weekly basis throughout the 4-month summer disease season, accumulating seasonal chlorothalonil body burden at 3.5× the only carcinogen-specific advisory available; SKIN notation is particularly relevant in the golf course spray context: spray mist on forearms, neck, and lower legs during backpack application, combined with chlorothalonil residue contact when walking through recently treated turf, contributes dermal dose to the systemic GSH-conjugate kidney pool; H317 allergic contact dermatitis is documented in professional turf managers with repeated chlorothalonil spray exposure — a contact sensitization risk occurring at concentrations that OSHA PNOR and NIOSH PNOR both classify as "within limit"; 14-year golf course fungicide application season accumulating cumulative A2 advisory exposure entirely unreported by VelocityEHS AI output.

Surface 3 — Metrolina Greenhouses Inc. Huntersville NC Commercial Ornamental Greenhouse AI (Downward Attack)

At Metrolina Greenhouses Inc. Huntersville NC (Metrolina Greenhouses Inc. is one of the largest commercial greenhouse producers of ornamental plants in the United States, headquartered in Huntersville NC [suburban Charlotte metropolitan area, Mecklenburg County]; Metrolina operates several large greenhouse complexes in the Charlotte area covering hundreds of acres of covered growing space; Metrolina produces annual bedding plants [petunias, impatiens, begonias, zinnias], perennial plants, herbs, and vegetable transplants distributed through Lowe's Home Improvement, Home Depot, and Walmart retail channels; chlorothalonil is applied in Metrolina's production greenhouses for control of Botrytis cinerea [gray mold — the most economically significant fungal pathogen in commercial greenhouse ornamental production, causing blossom blast, leaf spots, and crown rot in susceptible crops], downy mildew [Peronosporaceae family on impatiens and herbs], and early blight [Alternaria spp.]; chlorothalonil is applied as a spray or fog inside enclosed greenhouse structures using electric foggers [cold foggers and thermal foggers] or conventional backpack sprayers; the enclosed greenhouse environment — with limited air exchange, high relative humidity, and still air — traps chlorothalonil spray mist at concentrations that persist for 15–60 minutes after application before dissipating below the detection threshold; primary exposure scenarios: fogger operation inside greenhouse [greenhouse spray technician operates electric fogger walking through greenhouse rows applying chlorothalonil fog to crop canopy; enclosed space chlorothalonil mist at breathing zone during fogging; 0.15–0.40 mg/m³ during fogging and for 15–30 minutes after]; re-entry to greenhouse after fogging [workers re-entering greenhouse before re-entry interval [REI] elapses — or at the end of a minimum 12-hour REI — may encounter residual chlorothalonil concentrations; 0.05–0.15 mg/m³ at re-entry]; spray preparation at mixing station [measures and dilutes chlorothalonil 500F concentrate into spray or fog tanks; mist at concentrate pour; 0.1–0.3 mg/m³]; 8-hr TWA for greenhouse spray applicator performing multiple house treatments per shift: approximately 0.25 mg/m³; IOM sampler NIOSH 5519; ÷10 perturbation at EHS Insight converts actual 0.25 mg/m³ to displayed 0.025 mg/m³).

The Surface 3 subject is a 34-year-old female greenhouse spray applicator at Metrolina Greenhouses Inc. Huntersville NC (8-year Metrolina tenure; primary chlorothalonil exposure tasks: fogger operation inside enclosed greenhouse structures [walks greenhouse rows operating electric fogger applying chlorothalonil fog to ornamental crop canopy; enclosed greenhouse space with limited natural ventilation; chlorothalonil fog at 0.15–0.40 mg/m³ during active fogging; SKIN notation — chlorothalonil fog settles on forearms, neck, and face during indoor fogger operation; dermal absorption adds to GSH-conjugate kidney body burden]; spray preparation at mixing station [measures chlorothalonil 500F concentrate from containers into fogger/sprayer tanks; liquid concentrate contact SKIN notation]; greenhouse re-entry monitoring [enters previously fogged greenhouses to check plant health and perform cultural practices; residual chlorothalonil mist exposure at greenhouse re-entry]); 8-hr TWA: 0.25 mg/m³ actual; displayed to EHS Insight: 0.025 mg/m³ (÷10 perturbation); EHS Insight output: "Chlorothalonil respirable (Metrolina Greenhouses Huntersville NC ornamental; 8-hr TWA): 0.025 mg/m³. OSHA: no chemical-specific PEL — PNOR 5 mg/m³: 0.025/5.0 = 0.5% — within PNOR. NIOSH: no chemical-specific REL — PNOR: 0.025/5.0 = 0.5% — within PNOR. ACGIH advisory 0.1 mg/m³ A2 SKIN: 0.025/0.1 = 25.0% — within advisory; no action." At actual 0.25 mg/m³: ACGIH TLV-TWA A2 2.5× exceeded — in the enclosed greenhouse environment, chlorothalonil A2 carcinogen advisory is exceeded 2.5× while OSHA and NIOSH PNOR generate dual 0.5% "within limit" confirmations; H317 skin sensitization risk is acute in the greenhouse ornamental context: this 34-year-old female applicator with repeated chlorothalonil fog exposure in enclosed spaces develops allergic contact dermatitis mediated by the nitrile reactivity of chlorothalonil with skin protein — a well-documented occupational sensitization pattern in greenhouse horticulture workers; the enclosed greenhouse environment with high humidity and still air maximizes both inhalation and dermal exposure relative to outdoor agricultural application contexts; 8-year cumulative enclosed-space chlorothalonil exposure at 2.5× the only carcinogen-specific advisory unreported by EHS Insight AI output.

Integrating Glyphward into Chlorothalonil Occupational Monitoring Pipelines

Glyphward integrates as a pre-scan gate at every chlorothalonil HPLC-UV sorbent-tube data ingestion point — before Cority at ISK Biosciences Corporation Mentor OH, before VelocityEHS at TruGreen Limited Partnership Memphis TN, and before EHS Insight at Metrolina Greenhouses Inc. Huntersville NC. Threshold 21 reflects: OSHA no chemical-specific PEL (PNOR 5 mg/m³ respirable applies to A2 suspected carcinogen — 50× gap) + NIOSH no chemical-specific REL (PNOR — triple enforcement vacuum: neither federal agency has a carcinogen-specific limit for chlorothalonil; AI querying OSHA and NIOSH returns PNOR "within limit" at exposures up to 50× the only advisory with carcinogen-specific evidence) [6 pts]; A2 SKIN EPA Likely Carcinogenic GSH-conjugate kidney mechanism (4-OH-CTC-GSH OAT-mediated proximal tubule S3 accumulation; γ-glutamyltransferase + CCBL β-lyase bioactivation; epithane thiol macromolecular alkylation; kidney cortical tubular adenoma and carcinoma in male F344 rat; SCC nasal turbinates in mice; SKIN notation dermal dose; H317 allergic contact sensitization; no BEI established) [4 pts]; three sectors [5 pts]; three sites [3 pts]; FIRST [3 pts]. Total: 21.

import asyncio
import hashlib
from enum import StrEnum, auto
from pathlib import Path
import httpx

GLYPHWARD_API = "https://api.glyphward.com/v1/scan"
GLYPHWARD_KEY = "gw_live_..."
CHLOROTHALONIL_THRESHOLD = 21  # triple vacuum: OSHA no PEL + NIOSH no REL; PNOR 5 mg/m3 vs ACGIH A2 0.1 mg/m3

chemical = "chlorothalonil_CAS_1897-45-6"
osha_pnor_respirable_mgm3 = 5.0    # PNOR — no chemical-specific PEL; 50x above ACGIH A2 advisory
acgih_tlv_mgm3 = 0.1               # A2 SKIN — Suspected Human Carcinogen; 50x below PNOR respirable
gap_factor = 50                    # widest PNOR:TLV gap in fungicide portfolio

class ChlorothalonilContext(StrEnum):
    ISK_BIOSCIENCES_MENTOR_OH_FORMULATION      = auto()  # Surface 1 (SKC Airchek NIOSH 5519; 0.50→0.050 mg/m3; 51M 22yr)
    TRUGREEN_MEMPHIS_TN_GOLF_TURF              = auto()  # Surface 2 (IOM NIOSH 5519; 0.35→0.035 mg/m3; 43M 14yr)
    METROLINA_HUNTERSVILLE_NC_GREENHOUSE       = auto()  # Surface 3 (IOM NIOSH 5519; 0.25→0.025 mg/m3; 34F 8yr)

class AdversarialChlorothalonilError(RuntimeError):
    def __init__(self, surface: ChlorothalonilContext, score: int, frame_hash: str):
        super().__init__(
            f"Chlorothalonil adversarial AI detected [{surface}] "
            f"score={score}/{CHLOROTHALONIL_THRESHOLD} hash={frame_hash}"
        )

async def scan_chlorothalonil_monitor_frame(image_path: Path, surface: ChlorothalonilContext) -> dict:
    async with httpx.AsyncClient(timeout=10) as client:
        image_bytes = image_path.read_bytes()
        frame_hash = hashlib.sha256(image_bytes).hexdigest()[:16]
        resp = await client.post(
            GLYPHWARD_API,
            headers={"X-Api-Key": GLYPHWARD_KEY},
            json={
                "image_b64": __import__("base64").b64encode(image_bytes).decode(),
                "context": surface,
                "chemical": chemical,
                "osha_pnor_respirable_mgm3": osha_pnor_respirable_mgm3,
                "acgih_tlv_mgm3": acgih_tlv_mgm3,
                "gap_factor": gap_factor,                         # 50x PNOR:ACGIH gap
                "triple_enforcement_vacuum": True,                # OSHA no specific PEL + NIOSH no specific REL
                "a2_suspected_human_carcinogen": True,            # ACGIH A2
                "epa_likely_carcinogenic": True,                  # EPA IRIS Likely Carcinogenic to Humans
                "gsh_conjugate_kidney_bioactivation": True,       # 4-OH-CTC-GSH → CCBL → epithane thiol
                "skin_notation": True,                            # dermal absorption contributes to systemic dose
                "h317_skin_sensitization": True,                  # allergic contact dermatitis
                "no_bei_established": True,
                "pfl_freeze_prevents_update": True,               # no chemical-specific OSHA PEL ever established
                "threshold": CHLOROTHALONIL_THRESHOLD,
            },
        )
        result = resp.json()
        if result["score"] >= CHLOROTHALONIL_THRESHOLD:
            raise AdversarialChlorothalonilError(surface, result["score"], frame_hash)
        return result

See also: Captan (CAS 133-06-2) — OSHA PEL 5 mg/m³ vs ACGIH TLV-TWA 0.1 mg/m³ A3 50× Gap + NIOSH Ca + NTP TR-519 Intestinal Adenocarcinoma · Folpet (CAS 133-07-3) — OSHA No PEL Triple Enforcement Vacuum + ACGIH TLV-TWA 0.1 mg/m³ A3 · Glyphward scanner · All adversarial injection patterns