Built for environmental consulting
Collect. Validate. Prove.
Mainstay is the compliance delivery platform built specifically for environmental consulting firms. Tamper-evident SHA-256 proof on every document you deliver, zero-login client portals, live California regulatory feeds, and delivery-triggered invoicing. Every delivery logged, timestamped, and tamper-evident.
$599/month · Permanently locked · 15 firms max
Live today: SHA-256 delivery proof · zero-login client portals · live CA regulatory feeds (CARB, CalGEM, CIWQS, EPA ECHO) · delivery-triggered QuickBooks invoicing. On the founding-cohort roadmap: scheduled document collection · AI completeness checks · Annual Compilation · Auditor Portal.
Every April, the same scramble.
Without Mainstay
You have 20 active clients. Each one owes you monthly data.
You track it in a spreadsheet. You send reminder emails. You resend them. You follow up on the follow-up.
In February, a client says the data is fine. In April, it’s not fine — a monitoring gap from September that nobody caught.
The annual report is late. The client is nervous. CARB is asking questions.
You have an inbox full of emails. None of them are an audit trail.
With Mainstay
You send the client a secure upload link — no account, no spreadsheet.
Data arrives, timestamped and hashed on the record the moment it lands.
Your append-only audit log shows every upload and every timestamp — without touching a spreadsheet.
When CARB asks, you hand over the cryptographic record of exactly what was delivered, and when.
On the founding-cohort roadmap: AI gap-flagging (September caught in October, not April), the year-end Annual Compilation, and direct scoped auditor access.
And April is only the loudest deadline. The same chase runs all year — quarterly DMRs, semiannual CalGEM reports, post-storm SWPPP uploads, CEQA comment windows. Mainstay runs the same collect-check-prove loop on every one of them.
April just stops being special.
Mainstay closes the loop — from the first request to the final proof.
From first request to final proof, handled.
Five steps. One system. Each step logged, timestamped, and tamper-evident.
- 01
Request
Send your client a magic link to upload documents — no account setup on their side. Scheduled, recurring Collection Requests are on the founding-cohort roadmap.
- 02
Collect
Clients upload directly to your portal. Every file is timestamped, hashed, and logged the moment it arrives.
- 03
Check
Mainstay will compare incoming files against your request — e.g. "30-day monitoring request, only 20 days received" — surfacing gaps when files arrive, not at deadline. On the founding-cohort roadmap.
- 04
Compile
At year-end, Mainstay will build your Annual Compilation — a gap matrix, a firm-branded PDF, and a one-click ZIP. On the founding-cohort roadmap.
- 05
Deliver & Prove
The final report goes to your client through the zero-login portal. SHA-256 sealed, chain of custody complete. Scoped auditor access — handing CARB a link directly — is on the roadmap.
The Audit Log is append-only. Nothing disappears.
2025 Annual Environmental
Compliance Compilation
Prepared by [Your Firm Name]
Powered by Mainstay
Annual Compilation · On the roadmap
Your year-end report, compiled.
Mainstay will read every project’s collection history and build a gap matrix automatically — missing data flagged, received data verified. Export a firm-branded PDF and a complete archive ZIP, everything a regulator needs in one package. This is on the founding-cohort roadmap.
No assembly required. No last-minute scramble. Just your signature on something you can defend.
Built for the full compliance lifecycle.
Collection & Completeness — on the roadmap
Clients upload via magic link today. Scheduled collection requests and AI that flags gaps the day they arrive — not the week the report is due — are on the founding-cohort roadmap.
Zero-Login Client Portal
Clients upload to it and receive deliverables through it — nobody creates an account, nobody gets blocked by IT. One link, zero friction. (Scoped read access for third-party auditors is on the roadmap.)
SHA-256 Delivery Verification
Every document gets a cryptographic fingerprint. Timestamped. Immutable. Your proof of delivery, built in — not bolted on after the fact.
Live California Regulatory Feeds
Live feeds from CARB, CalEPA, CalGEM, CIWQS, and EPA ECHO. Deadline updates hit your dashboard before they hit your inbox.
10-Year Compliance Archive
Every accepted document archives automatically on finalization — structured, indexed, retrievable. Not a filing cabinet. A decade of defensible records.
Project AI
Ask questions across your entire project history. "What did we submit to DTSC on the Bakersfield site in March?" Get an answer, not a search result.
Firm-flat pricing. One price per firm, not per seat.
Per-seat pricing creates the wrong incentive — principals limit logins to control costs. Mainstay is firm-flat: pick the tier sized for your team, and adding a teammate within it never changes your bill. Billed annually — monthly available at a 20% premium.
$599/month · permanently locked
Fifteen firms are coming in now to shape Mainstay — and locking in Shield-tier access at $599/month for life. No price increases. Ever. Direct roadmap input. First access to every new module.
$599/month is the price of one billable hour per day. If Mainstay saves you that — and it will — it pays for itself in week one.
Proof
Solo & 2–5 person firms
$479/mo billed monthly
- Up to 5 seats
- Up to 10 active projects
- Unlimited deliverables
- 90-day project history
- SHA-256 delivery proof
- Zero-login client portals
Shield
5–20 person firms
$959/mo billed monthly
- Up to 15 seats
- Up to 25 active projects
- Unlimited deliverables
- Full project history
- SHA-256 delivery proof
- Zero-login client portals
Command
20–30+ person firms · Multi-principal shops
$1799/mo billed monthly
- Unlimited seats
- Up to 100 active projects
- Unlimited deliverables
- Full project history
- SHA-256 delivery proof
- Zero-login client portals
Common questions
What is Mainstay?
Mainstay is the compliance delivery platform for environmental consulting firms. It gives you tamper-evident proof of every document you deliver — a SHA-256 fingerprint and timestamp on every file — zero-login client portals your clients use without an account, live California regulatory feeds (CARB, CalGEM, CIWQS, EPA ECHO), and delivery-triggered QuickBooks invoicing so you bill the day work is received. Scheduled client document collection with AI completeness checks and an Annual Compilation are on the founding-cohort roadmap.
What proof do I have if a client or regulator disputes delivery?
Every document gets a SHA-256 cryptographic fingerprint on delivery — tied to a timestamp and a tamper-evident, append-only record of exactly what was sent and when. Nothing can be deleted or backdated. If a client or regulator disputes delivery, you have the cryptographic record of what went out and when — no email archaeology, no reconstructed records. (Scoped, read-only auditor access — handing a CARB verifier a link directly — is on the founding-cohort roadmap.)
Provable delivery →How does Mainstay help us get paid faster?
Mainstay logs the moment a deliverable is accepted or opened by your client — the billing-lag trigger. Instead of invoicing weeks later when someone finally remembers at month-end, you bill when the work actually ships. The acceptance event sits on the record, so there's no chasing sign-offs before you can invoice.
Faster cash →Does Mainstay fit how QSDs and QSPs actually work?
Yes. Mainstay ships pre-built process flows for the work California environmental firms run every week — SWPPP inspections, CEQA comment periods, Phase I/II ESA — with milestones, gates, and timestamped delivery at each step. It's not generic compliance software you have to bend to your process.
QSD & QSP workflows →Do my clients need accounts or passwords?
No. Clients receive a magic-link by email and upload or receive documents directly — no account, no app, no IT ticket. Nobody on the client side ever creates a Mainstay account. (The same zero-login model for third-party auditors is on the roadmap.)
Will Mainstay check incoming documents for completeness?
That's on the founding-cohort roadmap. The planned AI completeness check reads each document as it arrives against the request it answers — data type, period covered, whether the file matches — and flags gaps the day they arrive instead of the week the report is due. Founding-cohort firms shape how it works and get first access.
The only platform that knows CEQA from RCRA — and CalGEM from CIWQS.
Mainstay is built specifically for California environmental consulting. Live feeds from the agencies you actually file with. AI trained on real compliance workflows, not generic legal text.
CEQA
California Environmental Quality Act
DTSC
Dept. of Toxic Substances Control
RWQCB
Regional Water Quality Control Board
CARB
California Air Resources Board
CIWQS
CA Integrated Water Quality System
CalGEM
CA Geologic Energy Management
Stop chasing. Start compiling.
Mainstay gives you tamper-evident proof of every delivery and invoicing the day work ships — with scheduled collection, completeness checks, and the Annual Compilation arriving for the founding cohort.
$599/month · Permanently locked · 15 firms max · Annual contract