The California Land Reuse and Revitalization Act (CLRRA) application is the request package you submit to the California Department of Toxic Substances Control (DTSC) or a Regional Water Quality Control Board to enter a CLRRA Agreement, which gives qualified owners and tenants limited immunity from cleanup liability when they clean up and reuse a contaminated property. It is filed by people who buy, lease, or sit next to a “brownfield” site and want legal protection while they fix it. There is no single numbered state form; the “application” is a request letter, a Phase I Environmental Site Assessment, and a signed oversight cost reimbursement agreement, all built around the rules in Health and Safety Code Chapter 6.82.
Getting this package wrong can cost you the one thing CLRRA promises: protection from being sued or ordered to pay for pollution you did not cause. California has thousands of brownfield sites sitting idle, and DTSC’s broader Brownfields program has steered more than $131 million in cleanup grants into 90 projects, which shows how much money and land hinge on getting into these programs the right way. This guide walks you through every piece of the application, line by line, so you file it once and file it right.
Here is what you will learn:
- 🏗️ What the CLRRA application is and which five filer types can use it
- 📋 Every document and ID number you must gather before you start
- ✍️ A field-by-field walkthrough of the application letter, Phase I report, and agreement
- 👥 Three real-world filled-out examples for a developer, a city, and a nonprofit
- ⚠️ The most common mistakes that delay or kill your liability protection
What CLRRA Is and Who Must File It
CLRRA is a state law that lets a qualifying party clean up a contaminated “infill” property under government oversight and, in exchange, receive immunity from most cleanup liability for pollution that existed before they took control. The program is run mostly by DTSC and, in some cases, by a Regional Water Quality Control Board. The legal backbone is Chapter 6.82 of the Health and Safety Code, and the heart of the deal is a “Streamlined Site Investigation and Response Plan Agreement,” which most people simply call a CLRRA Agreement.
No one is forced to file a CLRRA application. You file it by choice because you want the protection. If you skip it, you can still be held responsible for old contamination under laws like the federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) or California’s own cleanup statutes, even if you never spilled a drop.
Five types of filers qualify. A bona fide purchaser buys a site after the law took effect and did all proper due diligence. A bona fide prospective purchaser is in contract to buy but has not closed. An innocent landowner bought without knowing about the pollution. A contiguous property owner owns clean land next to a polluted parcel that contaminated theirs. A bona fide ground tenant signs a long-term lease and agrees to clean up, with rules set out in Health and Safety Code sections 25395.102 to 25395.106. The site must sit in an infill location, must not be a federal Superfund or state-listed site, and the applicant must qualify for the federal liability defenses, as summarized in this CLRRA Corner Briefing.
Before You Start: Documents and Information You Need
Gather everything below before you open the application. A thin package is the number one reason DTSC sends a request back for more information, and each round trip can add weeks.
- Phase I Environmental Site Assessment. This report proves you did “all appropriate inquiry.” Without it, you cannot show you qualify as a bona fide purchaser, and the whole application stalls.
- Proof of your interest in the property. A grant deed, a signed purchase agreement, or a long-term lease. If you cannot show ownership, contract, or tenancy, DTSC cannot confirm you are an eligible party.
- Legal description and Assessor’s Parcel Number (APN). This pins down the exact land covered. A wrong APN can leave part of your site outside the agreement’s protection.
- Site maps and a vicinity map. These show boundaries, structures, and nearby sensitive uses like schools. Missing maps slow DTSC’s review of your infill claim.
- Known environmental data. Any prior Phase II results, soil or groundwater data, or regulatory records. Hiding or omitting data can void your immunity later.
- Your intended reuse and zoning. Plans for housing, retail, a park, or industry. This supports the cleanup standard tied to your end use.
- Entity formation documents. Articles of incorporation, an LLC operating agreement, or a partnership record. DTSC needs to know exactly who signs and is bound.
- A signed oversight cost reimbursement agreement. DTSC bills its staff and lab time to you. No signed reimbursement agreement means no executed CLRRA Agreement.
- A primary contact and consultant team. Name your environmental consultant and project manager up front so DTSC has one channel for questions.
Where to Get the Application and How to Access It
CLRRA intake materials live on DTSC’s Brownfields program page, which hosts the model CLRRA Agreement, the Voluntary Cleanup Program forms that CLRRA borrows from, and contact information for the Brownfields and Environmental Restoration Program. Because there is no single numbered “CLRRA Form CL-1,” you build your package from a request/application letter, the model agreement template, and the standard cost reimbursement and electronic-data forms DTSC uses across its cleanup programs.
You can request the model documents three ways: download them directly from the DTSC Brownfields page, email the regional Brownfields branch that covers your county, or call the DTSC office in Sacramento, Berkeley, Cypress, or Chatsworth that handles your region. If a Regional Water Board will be your lead agency instead of DTSC, you instead route the request through that board, since CLRRA allows either agency to oversee the agreement.
Confirm you have the current template before you sign anything. The model CLRRA Agreement is updated as the statute changes, and Chapter 6.82 has been amended and re-authorized more than once. Note the revision date printed on the agreement’s footer and match it against the version DTSC posts so you are not signing an outdated template.
Step-by-Step: How to Fill Out the CLRRA Application Line by Line
The CLRRA package has three working parts: the application/request letter, the Phase I ESA submittal, and the CLRRA Agreement with its reimbursement attachment. The fields below follow the order DTSC reviews them.
Part A, Field 1: Applicant Name and Legal Status
This field asks for the exact legal name of the person or business seeking the agreement. Write the full legal name as it appears on your formation documents, not a “doing business as” nickname, and state the entity type, such as LLC, corporation, city, or individual. For example, Riverside Infill Partners, LLC, a California limited liability company is correct, while Riverside Infill is not.
A common edge case is a brand-new single-purpose LLC formed just to hold the site; if the LLC was formed after the purchase contract, say so and attach the formation date. The most common mistake here is naming a parent company that does not actually hold title, which means the protected party and the title holder do not match and DTSC cannot bind the right entity. Many filers believe any affiliate in the corporate family is automatically covered, but CLRRA immunity attaches only to the named party and its defined successors, so the name must be exact.
Part A, Field 2: Site Address, APN, and Legal Description
This field asks where the property sits and how it is legally identified. Enter the street address, the city, the county, and every Assessor’s Parcel Number that makes up the site, then attach the full legal description from the deed. For example, 1450 Industrial Way, Richmond, CA 94801; APN 560-200-014 with the metes-and-bounds description attached.
If your site spans several parcels, list every APN, because the agreement protects only the parcels named in it. The most common mistake is listing one APN when the project covers three, which leaves the unlisted parcels with no liability protection at all. Filers often assume the street address alone defines the site, but DTSC works from the APN and legal description, so an address without parcel numbers is incomplete.
Part A, Field 3: Applicant Eligibility Category
This field asks which of the five CLRRA roles you are claiming. Check the single box that fits: bona fide purchaser, bona fide prospective purchaser, innocent landowner, contiguous property owner, or bona fide ground tenant. For example, a developer in escrow checks bona fide prospective purchaser, while a city that already closed checks bona fide purchaser.
The tricky case is a buyer who closes during the application process; you may start as a prospective purchaser and convert to a purchaser, so flag the expected closing date. The most common mistake is claiming bona fide purchaser status without a completed Phase I, since that status depends on “all appropriate inquiry,” and a missing report sinks the claim. Many filers think the categories are interchangeable, but each carries its own conditions under Chapter 6.82, and choosing the wrong one can deny you the immunity you expected.
Part A, Field 4: Proof of Property Interest
This field asks you to prove your legal tie to the land. Attach the recorded grant deed if you own it, the signed purchase and sale agreement if you are in contract, or the executed lease if you are a ground tenant, and reference the document in the box. For example, See Exhibit B, Grant Deed recorded 02/11/2026, Document No. 2026-0034512.
If you are a ground tenant, your lease must be long enough to cover the cleanup, so note the lease term. The most common mistake is attaching an unsigned draft contract, which fails to prove a real interest and forces a resubmittal. Filers sometimes believe a letter of intent counts as a property interest, but DTSC needs an enforceable deed, contract, or lease, not a non-binding LOI.
Part B, Field 5: Phase I ESA Summary and “All Appropriate Inquiry”
This field asks you to summarize the Phase I report that shows you investigated the property before taking control. State the consultant’s name, the report date, the standard used (typically ASTM E1527), and the recognized environmental conditions found. For example, Phase I ESA by GeoCheck Inc., dated 01/20/2026, ASTM E1527-21, identifying former dry-cleaner solvent use as a recognized environmental condition.
A frequent edge case is an older Phase I; if your report is more than 180 days old at the time you take title, key parts must be updated, or the “all appropriate inquiry” defense weakens. The most common mistake is submitting a Phase I dated after the purchase closed, which destroys bona fide purchaser status because the inquiry must come first. Many filers think a Phase I is a formality, but it is the legal foundation of your entire immunity, and a weak report undermines everything that follows.
Part B, Field 6: Description of Known Contamination
This field asks you to describe what is in the soil, soil gas, or groundwater. List each contaminant, its location, and any concentration data you already have, and attach any Phase II results. For example, Tetrachloroethylene (PCE) in shallow groundwater up to 480 micrograms per liter beneath the northeast corner, per Phase II dated 03/2026.
If you have no Phase II data yet, say so plainly and note that sampling is planned under the agreement. The most common mistake is downplaying or omitting contamination you know about, which can be treated as a failure to make full disclosure and can void your immunity. Filers sometimes assume that admitting contamination hurts them, but the opposite is true; the program exists for contaminated sites, and honesty here protects your defense later.
Part B, Field 7: Intended Reuse and Cleanup Standard
This field asks what you plan to build and how clean the site must be for that use. State the end use and the matching cleanup goal, since residential reuse requires a stricter standard than industrial reuse. For example, Proposed 84-unit affordable housing development; cleanup to unrestricted residential standards.
A common edge case is a mixed-use project, where part of the site is residential and part commercial; describe the split so the cleanup levels match each area. The most common mistake is picking an industrial cleanup level and later switching to housing, which can force a costly second round of remediation. Many filers believe one cleanup standard fits all reuses, but California ties the standard to the planned use, so your reuse statement directly controls your cleanup cost.
Part C, Field 8: Scope of the Site Investigation and Response Plan
This field asks you to outline how you will investigate and clean the site. Describe the planned Phase II sampling, the schedule, and the likely remedy, such as soil excavation, groundwater treatment, or a vapor barrier. For example, Phase II soil and soil-gas sampling within 60 days, draft Response Plan within 120 days, remedy expected to be targeted excavation plus a sub-slab vapor barrier.
The edge case here is vapor intrusion, a hot regulatory issue; if solvents are present, address vapor risk directly, because DTSC scrutinizes it closely. The most common mistake is proposing a vague, open-ended scope with no schedule, which signals you are not ready and slows agreement execution. Filers often think the agency will design the cleanup for them, but CLRRA expects the applicant to propose the investigation and response approach, with DTSC overseeing and approving it.
Part C, Field 9: Public Participation Plan
This field asks how the community will be informed and allowed to comment. Acknowledge the public notice and comment steps and describe outreach for nearby residents, including translated notices where needed. For example, Public notice mailed to all addresses within 500 feet, 30-day comment period, fact sheet provided in English and Spanish.
A key edge case is a site in a disadvantaged or non-English-speaking community, where extra outreach is expected and translated materials matter. The most common mistake is treating public participation as optional, which can stall the agreement, because CLRRA deliberately keeps public engagement even while streamlining the technical work, as noted in this CLRRA briefing. Many filers think public comment only applies to big Superfund sites, but CLRRA builds community input into the process for these projects too.
Part D, Field 10: Oversight Cost Reimbursement Agreement
This field asks you to agree to pay DTSC’s oversight costs. Sign the reimbursement agreement, provide a billing contact, and, if required, post the initial deposit or advance DTSC requests. For example, Billing contact: Dana Ortiz, CFO; initial deposit of $25,000 enclosed by check.
The edge case is a public agency applicant, which may have different billing terms than a private developer, so confirm your category’s deposit rules. The most common mistake is leaving the billing contact blank or bouncing the deposit, which prevents DTSC from opening a billing account and freezes the agreement. Filers often believe CLRRA carries a flat filing fee, but there is no fixed fee; instead you reimburse DTSC’s actual hourly staff and lab costs, so budget for an open-ended, time-based bill.
Part D, Field 11: Authorized Signature and Date
This field asks for the signature of the person legally allowed to bind the applicant. Sign in ink (or by approved e-signature), print the signer’s name and title, and date it in MM/DD/YYYY format. For example, Signed by Lena Brooks, Managing Member, 04/15/2026.
A common edge case is a corporation that requires board authorization; attach the resolution or written authority so DTSC knows the signer can commit the entity. The most common mistake is having a project manager or consultant sign when they lack authority to bind the company, which makes the agreement unenforceable. Many filers assume any company representative can sign, but only an officer, manager, or authorized agent can bind the applicant, and an improper signature can unravel the entire agreement.
Three Filled-Out Examples Using Real Scenarios
Below are three common CLRRA filers carried through the full package. Each table shows what they enter in the key sections.
Scenario 1: Carlos, a developer buying a former gas station for infill housing
| Form Section | What Carlos Enters |
|---|---|
| Applicant Name and Status | Riverside Infill Partners, LLC, a California limited liability company |
| Site Address and APN | 1450 Industrial Way, Richmond, CA 94801; APN 560-200-014 |
| Eligibility Category | Bona fide prospective purchaser (in escrow, closing 05/2026) |
| Proof of Interest | Signed purchase and sale agreement, Exhibit B |
| Phase I Summary | GeoCheck Inc., 01/20/2026, ASTM E1527-21, former USTs noted |
| Known Contamination | Petroleum hydrocarbons in soil near former tank pit |
| Intended Reuse | 84-unit affordable housing; unrestricted residential cleanup |
| Signature | Lena Brooks, Managing Member, 04/15/2026 |
Scenario 2: The City of Marlow acquiring an old industrial parcel for a public park
| Form Section | What the City Enters |
|---|---|
| Applicant Name and Status | City of Marlow, a California municipal corporation |
| Site Address and APN | 200 Foundry Road, Marlow, CA; APN 071-330-005 and 071-330-006 |
| Eligibility Category | Bona fide purchaser (closed 03/2026) |
| Proof of Interest | Recorded grant deed, Document No. 2026-0034512 |
| Phase I Summary | EnviroNova LLC, 12/05/2025, ASTM E1527-21, metals and solvents |
| Known Contamination | Lead and PCE in shallow soil across former foundry yard |
| Intended Reuse | 8-acre neighborhood park; recreational cleanup standard |
| Public Participation | Notice within 500 feet, fact sheet in English and Spanish |
Scenario 3: Aisha’s nonprofit ground-leasing a contaminated lot for a community center
| Form Section | What Aisha Enters |
|---|---|
| Applicant Name and Status | Eastside Futures, Inc., a California nonprofit public benefit corporation |
| Site Address and APN | 512 Harbor Street, Oakland, CA 94607; APN 018-0445-012 |
| Eligibility Category | Bona fide ground tenant (55-year lease) |
| Proof of Interest | Executed ground lease, term through 2081, Exhibit C |
| Phase I Summary | Terra Assess Group, 02/02/2026, ASTM E1527-21, former auto shop |
| Known Contamination | Waste oil and solvents in soil near former service bays |
| Intended Reuse | Two-story community center; commercial/recreational standard |
| Signature | Aisha Mensah, Executive Director, 04/22/2026 |
How to File the Completed Application
CLRRA packages reach the lead agency through several channels, and you should keep proof of delivery no matter which you use. Match the channel to your lead agency, which is usually DTSC but can be a Regional Water Board.
- By email to the Brownfields branch. Send the full PDF package to the DTSC regional Brownfields contact for your county, listed on the DTSC Brownfields page. There is no flat filing fee, but you will owe oversight costs once the account opens; keep the time-stamped sent email as proof.
- By mail or courier. Send to the DTSC regional office covering your site (Sacramento, Berkeley, Cypress, or Chatsworth), with the initial deposit check enclosed if requested. Use certified mail or a courier and keep the tracking receipt.
- In person. Hand-deliver to the regional office and ask for a date-stamped copy of your cover letter as your receipt.
- Through a Regional Water Board portal. If a water board is your lead agency, follow that board’s submittal instructions and keep the portal confirmation.
Payment for oversight is by check or, where allowed, electronic transfer to your DTSC billing account; there is no credit-card filing fee because CLRRA charges actual cost, not a set price. Expect initial review to take several weeks to a few months, and longer if the package is incomplete or public comment runs long. Your proof of filing is the executed CLRRA Agreement, signed by both you and the agency, so keep the fully signed original in your permanent project file.
What Happens After You File
After you submit, DTSC reviews your eligibility, your Phase I, and your proposed scope, then negotiates and executes the CLRRA Agreement with you. Once signed, you carry out the site investigation and the response plan under agency oversight, and the public gets its notice-and-comment opportunity along the way.
When you complete the approved cleanup and DTSC confirms it, your liability protection locks in for the covered contamination, and that protection extends to qualifying future owners and lessees, which is what makes the site financeable and sellable. You will keep receiving oversight invoices until the work is done, so track them against your budget. If you walk away mid-cleanup or break the agreement, you can lose the immunity entirely, so treat every milestone in the agreement as binding.
Mistakes to Avoid When Filling Out the Application
- Closing escrow before finishing the Phase I. This destroys bona fide purchaser status because the inquiry must come first.
- Listing only one APN on a multi-parcel site. The unlisted parcels get no liability protection.
- Naming a parent company that does not hold title. The protected party and the title holder no longer match, so the wrong entity is bound.
- Submitting an unsigned draft purchase contract. It fails to prove a real property interest and triggers a resubmittal.
- Hiding known contamination. Omitting data you already have can be treated as bad faith and can void your immunity.
- Choosing an industrial cleanup standard for a housing project. You may face a costly second cleanup when the use changes.
- Leaving the billing contact blank. DTSC cannot open your cost account, so the agreement stalls.
- Letting a consultant sign the agreement. A signer without authority makes the agreement unenforceable.
- Treating public participation as optional. Skipping notice and comment can freeze the process.
- Using an outdated model agreement. An old template may miss current statutory terms and slow execution.
- Forgetting to address vapor intrusion. With solvents present, ignoring vapor risk draws extra scrutiny and delay.
- Assuming a flat filing fee. Budgeting for one fee instead of open-ended oversight billing can blow your project budget.
Do’s and Don’ts
Do:
- Complete the Phase I before you take title, because it is the foundation of your immunity.
- List every APN and attach the full legal description, so all your parcels are covered.
- Disclose all known contamination, because honesty protects your defense.
- Match your cleanup standard to your real end use, to avoid a second remediation.
- Name an authorized signer with written authority, so the agreement binds the entity.
- Keep proof of filing and the fully signed agreement, because that is your protection record.
Don’t:
- Don’t sign with an out-of-date template, because it may omit current legal terms.
- Don’t leave the reimbursement agreement unsigned, since no signature means no executed deal.
- Don’t claim bona fide purchaser status without a timely Phase I, because the claim will fail.
- Don’t ignore the public comment step, since CLRRA keeps community input built in.
- Don’t use a letter of intent as proof of interest, because DTSC needs an enforceable document.
- Don’t assume affiliates are covered, because immunity attaches only to the named party.
Pros and Cons of Filing on Your Own vs. With Help
| Filing Pro Se (On Your Own) | Filing With an Environmental Attorney or Consultant |
|---|---|
| Saves professional fees, which helps a tight project budget | Higher upfront cost, but often cheaper than a failed immunity claim |
| You control the timeline directly, with no middle layer | Pros know DTSC reviewers and can speed negotiation |
| Builds in-house knowledge for future deals | Reduces risk of a fatal Phase I or eligibility error |
| Fine for a simple, low-contamination parcel | Strongly advised for solvents, vapor intrusion, or multi-parcel sites |
| Works when staff already understand brownfields | Aligns cleanup, CEQA, and entitlements as a single strategy |
A pro se filing can work for a small, clean site with an experienced in-house team. For complex contamination, multiple parcels, or high-value housing projects, professional help usually pays for itself by protecting the immunity, since one missed eligibility condition can erase the entire benefit, as flagged in this eligibility evaluation guidance. Many filers find the middle path best: handle routine paperwork in-house while a consultant owns the Phase I and the technical scope.
FAQs
Do I need a Phase I before I buy the property?
Yes. To claim bona fide purchaser status, your “all appropriate inquiry” Phase I must be complete before you take title, or the immunity defense fails.
Is there a flat filing fee for a CLRRA application?
No. CLRRA has no set fee; you reimburse DTSC’s actual hourly staff and lab oversight costs, which vary by project size and complexity.
Can a tenant use CLRRA, not just an owner?
Yes. A bona fide ground tenant with a qualifying long-term lease can enter a CLRRA Agreement under Health and Safety Code 25395.102, provided they commit to cleanup.
Do I list one APN or all of them in the site section?
No, you should never list just one for a multi-parcel site; enter every Assessor’s Parcel Number, because the agreement protects only the parcels named in it.
Do I write a “doing business as” name in the applicant field?
No. Use your full legal entity name from your formation documents, because immunity attaches to the named legal party, not an informal trade name.
Can a Superfund site qualify for CLRRA?
No. Federal Superfund-listed and certain state-listed sites are excluded, so CLRRA covers other contaminated infill properties instead.
Do I sign the agreement myself or can my consultant sign?
No, your consultant should not sign; an officer, manager, or authorized agent who can legally bind the applicant must sign, or the agreement is unenforceable.
Is public comment really required for my site?
Yes. CLRRA keeps a public notice and comment step even though it streamlines the technical work, so plan for community outreach.
Can a city or public agency use CLRRA?
Yes. Local governments often use CLRRA to acquire and clean blighted parcels for parks, housing, and public uses under DTSC oversight.
Does immunity protect future buyers of my cleaned site?
Yes. CLRRA protection extends to qualifying downstream owners and lessees once cleanup is approved, which is what makes the property financeable and sellable.
Do I need to disclose contamination I already know about?
Yes. You must disclose known contamination fully, because omitting data you have can be treated as bad faith and can void your immunity.
Can I switch from an industrial to a residential reuse later?
No, not without consequences; a switch to housing usually requires a stricter cleanup standard and can force a costly second round of remediation.
Is DTSC always the lead agency for CLRRA?
No. A Regional Water Quality Control Board can serve as the lead agency instead, so confirm which agency oversees your specific site.
Do I need the latest version of the model agreement?
Yes. Always confirm the current template on the DTSC Brownfields page, because Chapter 6.82 has been amended over time.
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