GORSS®
FOR STATE
& FEDERAL GOVERNMENTS
| Governmental | Odor | Regulatory | Sectoral | Solutions |
* Olf-Actions International Inc. is a private engineering and legal-advisory firm headquartered in Montréal, Québec, Canada. We are not a U.S. government agency. This page is intended for state and federal officials evaluating retention under applicable professional-services statutes.
WHEN ODOR BECOMES A
STATUTORY CHALLENGE
A single citizen complaint can trigger a regulatory inquiry within weeks. A regulatory inquiry can expose statutory gaps that years of legislative drafting failed to anticipate. Statutory gaps can become class actions filed against the state itself for failure to regulate.
For state and federal authorities, odor is no longer a quality-of-life issue. It is a statutory authority question, a regulatory accountability test, and a constitutional governance challenge.
GORSS® was engineered for state environmental commissioners, EPA regional administrators, USDA and FDA sectoral directors, state legislators, and their general counsels who refuse to discover statutory weaknesses on the day a class action is filed against their agency.
Six sequential mandates. From preliminary sectoral audit to courtroom-grade litigation defense. Designed to transform fragmented odor governance into coherent, defensible, Daubert-qualified regulatory architecture.
FOR STATE REGULATORS
Department of Environmental Quality officials, Air Quality Board commissioners, and rule-making staff face an unprecedented surge in odor-related petitions across agricultural, cannabis, wastewater, and industrial sectors. GORSS® delivers the sectoral diagnosis, dispersion modeling, and statutory drafting that transform complaint-driven crisis into evidence-based governance.
FOR FEDERAL OFFICIALS
EPA regional administrators, USDA environmental directors, and FDA sectoral authorities confront a structural inconsistency : the U.S. EPA does not directly regulate odors, while ten U.S. states apply Dilution-to-Threshold criteria and the rest of the world has adopted EN 13725:2022. GORSS® bridges this gap with federal-state-international regulatory coherence.
FOR STATE LEGISLATORS
State senators, representatives, and their environmental policy staff drafting nuisance bills face mounting litigation cost exposure. Recent precedents demonstrate that fines and settlements for single industrial sites can exceed $57 million within four years. GORSS® delivers the legislative drafting and Regulatory Impact Analysis that protect both citizens and state budgets.
THE DAUBERT/FRE 702 CREDENTIAL DOSSIER
THE EXPERT BEHIND GORSS®
Knowledge. Skill. Experience. Training. Education. The four pillars of Federal Rule of Evidence 702.
GORSS® is not delivered by a team of associates. Every mandate is led personally by Yann H. Contratto, P.E., M.E., Founder and CEO of Olf-Actions International Inc., Senior Legal Odor Expert and Dispersion Modeling Specialist with 33 years of continuous sectoral practice.
Pillar (FRE 702)
Evidence
KNOWLEDGE
15+ statutory odor frameworks drafted across North America, Europe, South America, and Middle-East
Sectoral expertise | Cosmetics, fragrance, and personal hygiene odor methods
SKILL
EN 13725:2022 olfactometry, AERMOD v24142 dispersion modeling, EPA Method TO-15, ASTM E679-04, ASTM D7339
4 proprietary odor dispersion software platforms | AERMOD-extension architecture
Proprietary sampling instrumentation | Flux chambers, dynamic dilution probes, sampling cabinets, dynamic dilution olfactometers, pressurization chambers
EXPERIENCE
5,000+ odor projects |
Olfactometry laboratories installed worldwide |
EN 13725-compliant facilities |
20+ years eNose R&D | Sensor arrays, monitoring networks, field validation |
TRAINING
Continuous CEN/TC264/WG2 working-group participation, AWMA, IWA Odour, ASTM committees
EDUCATION
P.E. (Professional Engineer)
M.I.T. Entrepreneurship Program
EN 13725:2022 | European olfactometry standard (CEN, 2022 revision)
AERMOD v24142 | EPA preferred near-field dispersion model (40 CFR Part 51 App. W)
EPA Method TO-15 | Air toxics canister sampling
ASTM E679-04 | Odor and taste threshold determination
ASTM E544-10 | Suprathreshold odor intensity
ASTM D7339 | BTEX/VOC field sampling
ISO 17025 | Calibration and testing laboratory accreditation
NIST-traceable | Instrumentation calibration chain
Jurisdictional fluency : Daubert (federal + 44 states) and Frye
(California, Illinois, Minnesota, New York, Pennsylvania, Washington).
* Yann H. Contratto is a Professional Engineer (P.E.) and Senior Legal Odor Expert. He is not a U.S.-licensed attorney. All legal advisory services are delivered in cooperation with U.S.-licensed counsel retained by the client agency.
GORSS® is structured as a sequential governmental program. Each mandate is independently deliverable yet engineered to integrate seamlessly with the next. State and federal authorities engage Olf-Actions for one mandate, several, or the full program, depending on the maturity of their odor governance framework and the regulatory urgency they face.
Preliminary Sectoral Audit
Baseline diagnosis of state emitters using NACAA inventories, EPA NEI data, ECOS reference frameworks.
Output : Sectoral risk matrix + statutory gap analysis
Regional Impact Study
AERMOD dispersion modeling per 40 CFR Part 51 Appendix W. Output : GIS-mapped impact zones + meteorological validation report (5+ years hourly data)
Sectoral Drafting of Law
Bespoke statutes patterned after Colorado Reg. No. 2, DC 20 DCMR §903, Minnesota Chapter 60, with EN 13725:2022 integration. Output : Model statute + Regulatory Impact Analysis (RIA)
Public & Stakeholder Consultation
Governance protocol modeled on EPA CPRC ECCR practices. Output : Stakeholder map + comment-period response framework + public hearing materials
Olfactometric Compliance Protocol
Field olfactometry, dynamic olfactometry per EN 13725:2022 in ISO 17025-accredited laboratories. Output : Enforcement-grade Standard Operating Procedure
Litigation Defense & Class Action
Independent expert testimony meeting FRE 702 and applicable Frye standards. Output : Defensible expert reports + deposition support + risk-shield retention
THE DAUBERT WALL
Every method | Every standard |
Every version | Documented |
GORSS® deliverables are engineered from day one to withstand cross-examination in any U.S. jurisdiction. Every method, every standard, every version is documented to satisfy Federal Rule of Evidence 702 (amended December 1, 2023) and to address "general acceptance" challenges under the Frye standard in California, Illinois, Minnesota, New York, Pennsylvania, and Washington.
OLFACTOMETRY
EN 13725:2022 (CEN)
ASTM E679-04
ASTM E544-10
VDI 3883
NFX 43-104
DISPERSION MODELING
AERMOD v24142 (EPA Appendix W)
CALPUFF (long-range)
Meteorological validation : 5+ years
CHEMICAL ANALYSIS
EPA Method TO-15
EPA Method TO-17
ASTM D7339
GC-MS-O
LABORATORY ACCREDITATION
ISO 17025
NELAC certification
NIST-traceable calibration
EVIDENTIARY FRAMEWORK
FRE 702 (Dec 1, 2023)
FRE 502 (privilege)
FRE 706 (court-appointed)
LEGAL JURISDICTIONS
Daubert : federal + 44 states
Frye : CA, IL, MN, NY, PA, WA
International coordination
* Olf-Actions International Inc. supports state and federal officials in identifying the appropriate procurement vehicle for retention. Standard classifications applicable to GORSS® services include NAICS 541620 (Environmental Consulting Services), NAICS 541330 (Engineering Services), and NAICS 541990 (All Other Professional, Scientific & Technical Services). Federal PSC codes : B510 (Environmental Assessments), B541 (Air Pollution Studies), R424 (Expert Witness Services).
* Olf-Actions International Inc. is not a member organization of, nor is endorsed by, ECOS, NACAA, EPA, AAPCA, ITRC, NEMA, or any U.S. governmental or quasi-governmental body. References to these institutions reflect methodological alignment with their published frameworks only. No endorsement, affiliation, or partnership is implied or claimed.
* SENSITIVE INFORMATION HANDLING
No U.S. trade-secret information, Controlled Unclassified Information (CUI), attorney work-product, classified material, or pre-decisional regulatory material should be transmitted through the public contact form on this website. Secure file transfer protocols are available for confidential engagements following NDA execution.
* FOREIGN OWNERSHIP DISCLOSURE
Olf-Actions International Inc. is headquartered in Montréal, Québec, Canada. This disclosure is provided for transparency under Buy American Act considerations applicable to certain federal direct prime contracting. State procurement engagements are generally exempt from such restrictions. Federal engagements are routinely structured as sub-contracting arrangements with U.S.-prime contractors where required.
* CONFLICT-OF-INTEREST POLICY
Comprehensive conflict-of-interest screening is conducted prior to any engagement. Olf-Actions maintains strict firewalls between party-retained expert engagements and court-appointed neutral engagements. Written COI clearance precedes every engagement letter.
* CONFIDENTIALITY POLICY
All client engagements are governed by Non-Disclosure Agreement. Case studies referenced on this website are anonymized by sector and geography only. No client identification is disclosed without explicit written release. This confidentiality standard applies to industrial clients, municipal clients, state agencies, and federal authorities equally.
* JURISDICTIONAL COMPETENCE
GORSS® services are provided across all 50 U.S. states and U.S. territories, with full fluency in both Daubert (federal + 44 states) and Frye (California, Illinois, Minnesota, New York, Pennsylvania, Washington) evidentiary standards.
* WEBSITE CONTENT DISCLAIMER
The content of this website is provided for informational purposes only. While Olf-Actions International Inc. makes reasonable efforts to ensure accuracy, the website does not constitute a binding offer of services, a guarantee of outcome, or a substitute for engagement-specific professional advice. All engagement terms are governed by written engagement letters executed between Olf-Actions and the retaining agency.
FREQUENTLY ASKED QUESTIONS
The questions state and federal procurement officers actually ask.
Q1 | Can a state agency retain Olf-Actions on a sole-source basis? Yes, where applicable state statute permits. GORSS® services typically qualify under professional-services exemptions including PA 62 P.S. §515(a)(4), CA Gov. Code §4525, TX Gov. Code Ch. 2254, and analogous state provisions. We provide the procurement justification documentation upon request.
Q2 | How does GORSS® integrate with EPA Guideline on Air Quality Models? All dispersion modeling deliverables conform to 40 CFR Part 51 Appendix W, using AERMOD v24142 (the current EPA-preferred near-field model since November 2024 update). CALPUFF is deployed for long-range applications.
Q3 | Are deliverables Daubert-defensible? Yes. Every methodology, standard, and version is documented from project inception to satisfy Federal Rule of Evidence 702 (amended December 1, 2023). Frye-jurisdiction adaptations are integrated where required.
Q4 | What is the typical Regulatory Impact Analysis timeline? Standard RIA for a state-level sectoral statute requires 8 to 12 weeks. Complex multi-sector RIA with economic impact modeling requires 16 to 20 weeks.
Q5 | How do you anonymize past-performance references in procurement files? References are provided by sector, geography, and outcome only. Client agency identification requires explicit written release from the prior client.
Q6 | Do you carry professional liability insurance? Yes. Errors and Omissions insurance is maintained for all jurisdictions of practice. Certificate of Insurance available upon request to procurement officers.
Q7 | What is your conflict-of-interest screening protocol? Comprehensive COI screening is conducted before any engagement against current and recent client database. Written COI clearance is provided prior to engagement letter execution.
Q8 | Can the expert testify at deposition and trial? Yes. Mr. Contratto has provided expert testimony at deposition and trial in 130+ legal cases across federal and state courts in the United States, Canada, Europe and internationally.
Q9 | How is evidentiary chain-of-custody preserved? All samples, data, and documentation follow ASTM-compliant chain-of-custody protocols. Digital evidence is preserved per Federal Rules of Civil Procedure e-discovery standards.
Q10 | Does Olf-Actions accept appointment as a court-appointed neutral expert? Yes. Mr. Contratto is available for appointment under Federal Rule of Evidence 706 and analogous state provisions. Independent neutral expert engagements are strictly firewalled from party-retained expert work.
Like the most discreet strategic advisors, our value is measured by what never reaches the public record.
© 2026 Olf-Actions International Inc. All rights reserved.
GORSS® is a registered trademark of Olf-Actions International Inc. (USPTO registration pending, May 2026). Unauthorized use prohibited.
Olf-Actions International Inc. | 4360 Old Orchard Avenue, Montréal, Québec, H4A 3B4, Canada | Yann@Olf-Actions.com | +1 514 758 3974 | www.Olf-Actions.com
LEGAL | TECHNICAL | SCIENTIFIC | ENGINEERING | ODOR EXPERTS
* This website is intended for informational purposes only and does not constitute legal advice, an offer of legal services, or the formation of an attorney-client relationship. Olf-Actions International Inc. is not a U.S. government agency. Yann H. Contratto is a Professional Engineer (P.E.), not a U.S.-licensed attorney.
© 2026 by Olf-Actions INTERNATIONAL