Environmental Site Assessment
Phase I and Phase II style due-diligence reviews for property transactions, refinancing and brownfield redevelopment.
Helena, Montana · Established 2016
Environmental work that holds up when somebody checks it
Eco Sinergia LLC helps American businesses, municipalities and landowners understand their environmental impact, meet their obligations and reduce what they can — with field data, clear documentation and no inflated promises.
10+Years in practice
240+Engagements delivered
6States covered in the field
98%Repeat & referral clients
Environmental site assessmentGHG Protocol inventoriesStormwater complianceWaste diversion auditsRenewable feasibilityStaff training
Environmental site assessmentGHG Protocol inventoriesStormwater complianceWaste diversion auditsRenewable feasibilityStaff training
Who we are
A small Montana firm that does the unglamorous parts properly
Eco Sinergia was founded in Helena in 2016 by William Smith, after fifteen years of field and compliance work across the western states. The firm was built around a simple frustration: too many environmental reports were written to be filed, not to be used.
We are deliberately small. Every engagement is scoped, reviewed and signed off by the owner. When you call the number on this website during working hours, somebody who has been on your site answers it.
- Principal-level review on every deliverable
- Chain-of-custody discipline on every sample
- Plain-English summaries alongside the technical appendices
- Written scope, written assumptions, written exclusions
What we do
Six services, one standard of evidence
Each one can be delivered on its own or combined into a single programme with one point of contact and one reporting rhythm.
Carbon Footprint & ESG Reporting
Scope 1, 2 and screening-level Scope 3 inventories built on the GHG Protocol, ready for lenders, customers and boards.
Water & Soil Monitoring
Sampling programmes, discharge monitoring reports and long-term trend analysis for rivers, wells and industrial outfalls.
Waste Reduction & Circularity
Waste characterisation studies, diversion targets and supplier programmes that cut disposal cost as well as tonnage.
Renewable Energy Advisory
Feasibility screening, incentive stacking and procurement support for solar, wind, heat pumps and efficiency retrofits.
Training & Community Outreach
Practical workshops for staff, contractors and residents — delivered on site, in plain language, with materials you keep.
How we work
Five stages, no surprises
Scoping call
Thirty minutes, no charge. We establish what you actually need, what the deadline is, and whether we are the right firm. Sometimes we are not, and we say so.
Written proposal
A fixed scope, a fixed fee where the work allows it, a schedule, and an explicit list of what is not included. One page of substance, not twenty of boilerplate.
Fieldwork & data
Sampling, surveys, audits and interviews, run to documented procedures with laboratory partners we have used for years. You get progress notes, not silence.
Analysis & draft
We interpret the data, flag what is uncertain, and issue a draft for your comment before anything is finalised. Nothing goes to a regulator or a lender unread by you.
Delivery & walkthrough
A final report, the underlying data, and a live walkthrough with the people who have to act on it. Follow-up questions in the following ninety days are not billed.
Selected work
Recent projects
Habitat & water
Riverbank Restoration — Lewis and Clark County, MT
A 42-acre stretch of degraded riparian corridor was stabilised with native willow and cottonwood plantings after two seasons of erosion mapping.
Carbon & ESG
Carbon Inventory for a Regional Food Producer
A five-site inventory covering refrigeration, fleet and purchased electricity, delivered with a ranked reduction plan and a lender-ready summary.
Water
Stormwater Compliance Programme, Industrial Park
We rebuilt a lapsed SWPPP, retrained the site crew and set up a quarterly sampling rhythm that has held clean for nine consecutive quarters.
In their words
What clients say
We do not publish logos without permission, and we do not invent praise. These are shortened quotes from written feedback, used with consent.
“The report was the first one our board actually read end to end. That is not a compliment I expected to give an environmental consultant.”
“They told us one of the measures we were considering would not pay back. It cost them work and saved us money. We have used them ever since.”
“Field crew showed up on time, in the weather, three seasons running. The data has never been questioned.”
Insights
Notes from the field
Short, practical write-ups on the questions clients ask us most often.
Carbon & ESG
Scope 3 without the panic: a starting point for mid-sized companies
Most companies do not need a perfect Scope 3 inventory in year one. They need a defensible screening estimate and a plan.
March 12, 2026
Water
Five stormwater mistakes we still find on well-run sites
Compliance rarely fails because of the big things. It fails at the drain inlet nobody labelled and the log nobody signed.
February 4, 2026
Waste
What actually happens during a waste audit
A plain description of the week we spend on your site, what we weigh, and what you get at the end of it.
January 21, 2026
Let's talk about your site, your permit or your report
Tell us what you are dealing with. We will tell you honestly whether we are the right firm for it, what it will take, and what it will cost.