Plumbing
Find aboveground storage tank inspection prospects
Build a tank inspection calling list from records and visible assets, then verify the operator, inspection basis, access, and actual purchasing need.
Direct answer
Find aboveground storage tank inspection prospects by combining state tank records, installation and permit files, dated aerial observations, and operator confirmation inside your service area. Qualify each site by tank type, contents, inspection basis, last report, responsible buyer, and access before quoting. A visible tank is a research lead. A useful inspection prospect has an identified operator and a documented task or an agreed records gap to resolve.
On this page
What makes a tank inspection prospect worth calling?Which tank sites fit your inspection service?Where can you find aboveground tank owners?What can aerial images actually prove?When does SPCC change the inspection conversation?Which inspection basis belongs in the prospect record?Who can authorize the inspection work?Inspection prospect worksheetHow do you verify the site before quoting inspection?Which storage tank inspection companies fit the scope?Worked example: price a defined discovery visitHow does travel change the value of an account?What to documentCommon mistakesField qualification checklistStandards and referencesUnits and termsMethodologyOpen the related tool for the calculation, checklist, or packet.
FieldOS by AnvilfieldOffline-first FieldOS for job photos, proof packets, property memory, calculations, teams, billing, and owner-ready reports.What makes a tank inspection prospect worth calling?
Start with the inspection work your company can deliver. Write down the tank types, inspection methods, personnel qualifications, travel area, and report packages you support. Identify work that needs a specialist partner before you build the calling list. Use those limits to screen the first list.
Use four stages: observed site, operator confirmed, inspection basis confirmed, and scope accepted for quotation. Give each stage an evidence requirement. A dated image supports the first stage. An operator identifying the tanks supports the second. The inspection program and previous reports support the third. An agreed deliverable, access arrangement, and purchasing route support the fourth.
An owner does not need a known defect to justify a conversation. A contract renewal, planned outage, changed tank inventory, or missing inspection file can support a defined review. Ask what decision the owner wants to make. Record the requested deliverable so the estimator can price it.
Treat a missing report as unavailable evidence until someone checks the facility file. Do not label the tank overdue, unsafe, or noncompliant from an empty spreadsheet cell. The first paid task may be inventory reconciliation rather than a formal inspection.
Which tank sites fit your inspection service?
Separate the equipment before sorting the accounts. A fleet yard with shop fabricated oil tanks, a terminal with field erected tanks, and a site with an unidentified vessel create different research questions. Do not assign the same inspection package to all three because they share a round outline.
The Steel Tank Institute's public SP001 overview describes shop fabricated and small field erected tanks within its scope and distinguishes that work from larger field erected tank work associated with API 653 [5]. Use those categories to route the inquiry. Confirm the actual construction, service, standard applicability, and inspection program before selecting a method.
EPA also distinguishes oil filled equipment from bulk storage containers for its bulk storage integrity requirements [3]. Keep transformers and other equipment out of a tank inspection count unless you have separately established the appropriate equipment scope. The table is a routing aid, not an engineering determination.
| Candidate | Initial service lane | Evidence needed before quoting |
|---|---|---|
| Confirmed shop fabricated oil storage tank | Review SP001 applicability | Tank plate, design records, containment, service, and inspection program |
| Confirmed large field erected steel storage tank | Review API 653 applicability | Construction standard, previous reports, operating limits, and proposed inspection type |
| Vessel with unknown contents or purpose | Hold classification | Operator identification and equipment records |
| Water tank or identified pressure vessel | Separate specialist inquiry | Actual service and the owner's applicable inspection basis |
| Oil filled electrical equipment | Equipment maintenance inquiry | Equipment identity and its maintenance program |
Where can you find aboveground tank owners?
Build the first list around a territory your inspection crew can cover economically. Choose your own county, travel limit, and tank service criteria. Search the state environmental agency's tank records, local installation and fire permit files, facility procurement pages, and the operator's published information. Record what each source establishes and what still needs a call.
Florida provides a useful public example. Its storage tank facility information page describes separate facility, owner, and tank reports linked by facility identification number. Its regulated AST report includes tank identifiers, capacity, placement, contents, installation date, and status. Other reports include historical facilities and cleanup activity [1]. Start with the report that answers your question, then check its status fields.
Join records by facility ID and tank ID where supplied. Keep the original agency identifiers alongside your own account number. Deduplicate facilities before counting prospects, then retain separate tank records underneath each facility. Three tanks at one yard are one potential purchasing conversation, with three assets to classify.
Request the equivalent records in your market rather than presuming Florida's reporting structure applies everywhere. A missing registry result stays unresolved. Check permit records and ask the operator; do not infer that no tank exists or that registration is required from an unsuccessful search.
| Research source | Useful starting evidence | Next verification |
|---|---|---|
| State tank report | Agency ID, reported tank attributes, status | Current equipment and responsible operator |
| Installation or alteration permit | Proposed work, address, issue date | Completion, actual installation, later changes |
| Parcel record | Owner of record for the property | Tank ownership and service purchasing authority |
| Dated aerial observation | Visible vessel location and site arrangement | Purpose, contents, condition, and continued presence |
| Public procurement notice | Published scope and purchasing instructions | Current status, required qualifications, and submission route |
What can aerial images actually prove?
Use an image to record a visible feature at a location on an observation date. Describe a horizontal vessel, a group of circular roofs, a containment outline, or the apparent approach to a service yard. Keep the image capture date separate from the date your researcher reviewed it. Leave obscured equipment uncounted or explicitly uncertain.
Do not assign oil contents, capacity, steel thickness, inspection status, contamination, or buying intent from that view. Even a clear tank outline leaves the technical classification open. A structure beside a generator may justify asking about its connection, but it does not establish what is stored inside.
Carry the limitation into the calling list. Write 'two visible vessels in dated image; current use unconfirmed' instead of 'two diesel tanks needing inspection.' That wording gives the caller something accurate to verify and prevents an estimator from treating a desk observation as an equipment schedule.
For custom territory research, PorchRocket Asset Search offers searches and monitoring for assets visible from above [8]. Describe the visible tank features and geography you need investigated. Bring the returned candidates through the same records and operator checks as every other lead.
When does SPCC change the inspection conversation?
For United States oil storage sites, use EPA's Spill Prevention, Control, and Countermeasure (SPCC) applicability screen before discussing a federal inspection obligation. It considers non-transportation-related activity, oil use or handling, discharge potential to navigable waters or adjoining shorelines, and countable storage capacity [2]. Seeing a tank does not answer that screen.
The aboveground capacity test is greater than 1,320 US gallons in aggregate. Containers smaller than 55 gallons and other listed exclusions are omitted. This is capacity, not today's inventory. EPA also provides a separate completely buried capacity test [2]. Have the owner or qualified adviser resolve the full facility screen rather than applying one number to an isolated vessel.
For covered aboveground bulk oil storage, EPA requires integrity testing or inspection at the planned interval and whenever material repairs are made, plus frequent exterior checks. Industry standards establish the methods and personnel qualifications for the container's size, design, and configuration [3]. Ask for the site's written inspection program.
EPA says the SPCC rule does not prescribe one specific frequency or methodology for aboveground container inspections [4]. Therefore 'annual SPCC inspection' is an incomplete scope description. Name the task, its controlling document, interval, personnel, and report. State and local requirements still need their own review.
Which inspection basis belongs in the prospect record?
Request the tank register, current inspection program, last inspection report, repair history, and next scheduled task. Match every report to a tank identifier. If the file uses a former asset number, obtain the cross reference before accepting it as this tank's history. Save the document date and the person who confirmed the match.
Write the standard and edition, inspection type, due-date basis, and responsible reviewer in separate fields. Distinguish routine observations, formal external inspection, formal internal inspection, and additional testing. STI's overview describes these separate inspection subjects and explains that tank configuration and service conditions affect the program [5].
Keep dates provisional when the previous report or governing program is missing. A researcher's guessed installation year cannot establish the next formal inspection date. Ask a qualified inspector to resolve the program and baseline evidence first. Price that review as its own task if it is substantial.
Do not paste an interval from a different site's report into this proposal. The public summaries linked here support qualification; they do not replace the applicable standard or a facility-specific inspection plan. Assign each missing item to a reviewer before releasing the quote.
Who can authorize the inspection work?
Identify the parcel owner, tank owner, operator, maintenance lead, and purchasing authority separately. Start with the facility's public business contact and ask who manages the aboveground tank inspection records. Confirm the legal entity that would issue the order and the person who can approve access. A name on a property record does not settle either question.
Use a concrete opening: 'We inspect aboveground storage tanks in this area. Who manages your tank inspection program, and is there a records review or scheduled inspection you want help with?' Ask whether the existing contract includes the work before presenting it as an uncovered need.
If the program is current and covered, record the renewal or backup-vendor conversation the operator actually wants. If no present need exists, give the record a sensible follow-up date. For public facilities, obtain the purchasing instructions before preparing a detailed offer. A research call creates no authorization to enter the yard or perform inspection work.
Inspection prospect worksheet
Use one facility record with linked asset rows. Mark information as agency reported, operator reported, field verified, or unknown. Those labels describe evidence origin; they are not inspection acceptance grades. Keep a source and date beside every value that could change the quote.
Assign each unresolved item to a person and a next action. Release the estimate when the required records and access are confirmed.
| Field | Record | If unresolved |
|---|---|---|
| Facility identity | Address, coordinates, agency ID, operator | Check for duplicate locations or an inactive facility |
| Tank identity | Asset ID, nameplate, material, construction, service | Request equipment records and operator confirmation |
| Capacity and contents | Documented capacity and reported product, with source | Keep estimates outside confirmed fields |
| Inspection basis | Program, standard, edition, inspection type | Assign qualified scope review |
| History and timing | Last report, findings, repairs, next task and basis | Reconcile the file before calling work overdue |
| Access and operations | Escort, work window, restrictions, operating status | Hold dispatch until the visit can be defined |
| Buyer and authorization | Approver, report recipient, purchasing route | Find the responsible role before detailed estimating |
| Next action | Deliverable, owner, agreed date, commercial stage | Keep the candidate in research |
How do you verify the site before quoting inspection?
Agree on a limited external discovery visit when the records cannot settle the equipment boundary or access. Match tags and permitted photographs to the inventory, identify observable supports and containment, and note inaccessible areas. Record visible conditions by location without declaring a cause or fitness for service.
Keep the visit's authority specific. Observation does not authorize opening connections, removing covers, operating valves, climbing tanks, testing alarms, or entering a vessel. If the requested inspection needs those actions, define a separate work method, operating window, and qualified personnel before proceeding.
General industry permit space and hazardous energy requirements include host and contractor coordination; North Carolina's labor department provides the relevant 1910.146 and 1910.147 requirements [7]. If later work requires entry, have the responsible team establish the applicable entry, isolation, atmospheric testing, and rescue arrangements. Keep that preparation outside a routine sales visit.
Finish with a findings list that separates verified assets, reported conditions, access limitations, and unresolved technical questions. Give the estimator a reason to price each follow-up task. If a suspected release is observed, notify the operator and follow the facility response procedure instead of continuing a routine qualification tour.
Which storage tank inspection companies fit the scope?
Evaluate the proposed team against the tank and inspection program. Ask who performs the inspection, who evaluates any measurements, who signs the report, and which work is subcontracted. Request relevant experience and a sample report with customer details removed. Confirm that its limitations and conclusions match the deliverable the owner needs.
For an API 653 scope, verify the named individual's applicable certification using API's Inspector Status Verification tool [6]. API describes its directory as a credential verification resource and says it is not intended for commercial use. Use it to check the proposed inspector, not to harvest a prospecting list. Resolve uncertain status directly with API.
For SP001 work, confirm the qualifications required for the actual inspection type and the proposed person's current credentials. Also ask the owner or implementing agency what separate authorization applies locally. A credential name alone does not define the company's entire scope. Agree on examination methods, equipment, report contents, exclusions, and review responsibility before comparing prices.
Worked example: price a defined discovery visit
A sample transit maintenance yard reports three aboveground oil storage tanks and requests inventory reconciliation before seeking formal inspection quotes. The operator supplies its existing files and authorizes one external discovery visit. The deliverable is three asset worksheets, permitted photographs, a records-gap register, and a proposed scope for qualified review. This visit provides no formal integrity inspection or fitness-for-service determination.
Every quantity and rate is an estimating input. One inspector and one technician spend five hours each on site and 1.5 paid hours each on round-trip travel. The inspector also spends two hours reviewing records and three hours preparing the report. Loaded hourly costs are $95 for the inspector and $60 for the technician, including wages, payroll burden, and benefits.
One vehicle travels 90 round-trip miles at an internal cost of $0.90 per mile, excluding labor. Allow $175 for the visit's ordinary equipment and consumables. The case uses a weekday visit, an owner-provided escort at no charge, usable supplied records, and no delay. No lift, climbing, entry, testing, laboratory work, fuel handling, repairs, permit fee, lodging, overtime, or specialist subcontract is included.
Anvilfield research applies a 10% contingency to direct cost and a 30% target gross margin to that resulting cost basis. Office overhead and profit must come from the gross margin. The proposal is before applicable sales tax; tax is excluded from this arithmetic.
| Cost item | Calculation | Amount |
|---|---|---|
| Records review | 2 inspector hours x $95 | $190.00 |
| Inspector on site | 5 hours x $95 | $475.00 |
| Technician on site | 5 hours x $60 | $300.00 |
| Paid travel labor | 1.5 hours x ($95 + $60) | $232.50 |
| Report preparation | 3 inspector hours x $95 | $285.00 |
| Vehicle cost | 90 miles x $0.90 | $81.00 |
| Equipment and consumables | One allowance | $175.00 |
| Direct cost subtotal | Sum of the seven cost items | $1,738.50 |
| Contingency | $1,738.50 x 0.10 | $173.85 |
| Cost basis | $1,738.50 + $173.85 | $1,912.35 |
| Price at 30% target gross margin | $1,912.35 / (1 - 0.30) | $2,731.93 |
| Rounded proposal price | Before applicable tax | $2,735.00 |
How does travel change the value of an account?
At the example's $2,735 price, revenue less the $1,912.35 cost basis is $822.65, about 30.08% of revenue. That still pays overhead and profit. Dividing the proposal by three tanks allocates this visit's price; price each new visit from its records review, travel, and reporting.
Now both people spend two additional paid hours on travel, with mileage and every other input held unchanged. Direct cost increases by $310. Applying the same 10% contingency adds $341 to the cost basis, which becomes $2,253.35. Keeping the original selling price leaves $481.65, about 17.61%. That is the cost of one changed access or scheduling input.
Rank nearby candidates by confirmed service fit, a reachable operator, document readiness, and workable access before apparent tank count. Combine mobilizations only after the technical scope and purchasing arrangements allow it. Keep possible repair revenue and a hoped-for annual agreement outside the discovery visit's economics until those scopes are accepted.
What to document
Preserve the research source, retrieval date, observation date, agency identifiers, operator confirmation, tank records, inspection basis, access terms, and next decision. Keep the original documents attached to the relevant asset. Track who reported each fact and who later verified it so a changed inventory does not silently overwrite the old evidence.
A weak note says 'old tanks, needs API inspection.' A useful sample note says 'operator confirms tanks T1 through T3; construction records requested; last formal report not supplied; inspection basis unresolved; maintenance lead requests external inventory visit; purchasing approval pending.' The second note tells the estimator what is known and what the first scope must settle.
After the visit, assign each unresolved item to a person and an agreed date. Keep coating assessment, corrosion evaluation, piping work, generator fuel service, and entry planning as separate follow-up tasks when findings justify them. The related guides cover those technical subjects after the scope has been established.
Common mistakes
Counting registry rows as customers overstates the calling list. Deduplicate the facility, preserve the individual tank records, and confirm the operator. Counting every historical record as active equipment causes the same problem. Save status and date fields before moving a site into the current territory list.
Treating age or exterior appearance as an inspection deadline sends the wrong message to the owner. Obtain the program and report history. Treating every service walkaround as a formal integrity inspection creates a scope the crew may never have agreed to perform. Name the inspection type and qualifications in the proposal.
Finally, do not bury discovery costs in a hoped-for repair contract. Count research, reporting, access coordination, and travel even when you choose to absorb them. Review which candidates became useful owner conversations and accepted scopes before expanding the list. Confirm the buyer before adding more sites.
Field qualification checklist
Use this checklist before committing detailed estimating or field time. Leave unresolved items open, assign the next action, and keep the prospect at the stage its evidence supports.
Want this checklist to run itself on every job — with photo proof and a signed record crews can hand the customer? That's FieldOS.
Standards and references
Sources checked November 4, 2026. The EPA bulk storage inspection fact sheet is dated August 2013; the EPA scheduling answer was updated May 11, 2026. These public sources support the screening and scope distinctions here. They do not establish which standard edition, local requirement, or inspection interval governs a particular facility.
The full purchased SP001 and API 653 standards were not reviewed. Obtain the applicable editions, owner documents, and agency requirements before setting acceptance criteria. The worksheet, prospect stages, typical facility, costs, and margin are original planning inputs.
Florida DEP: Storage Tank Facility InformationEPA: Does the SPCC Rule Apply to Your Facility?EPA: Bulk Storage Container Inspection Fact SheetEPA: SPCC Rule schedules for inspections, tests, and evaluationsSTI/SPFA: What Is SP001?API: Find an Inspector and Inspector Status VerificationNorth Carolina Department of Labor: Subpart J, including 1910.146 and 1910.147PorchRocket: Asset Search for tanksUnits and terms
- AST
- Aboveground storage tank. Verify the tank's actual construction, service, and inspection basis before assigning work.
- Inspection basis
- The controlling program, standard and edition, inspection type, personnel qualifications, and evidence used to define the tank's inspection task.
- US gallon
- The capacity unit used for the federal screening numbers in this guide; keep documented capacity separate from current inventory.
- Gross margin
- Revenue less the stated cost basis, divided by revenue. The worked example includes contingency in that basis and recovers overhead from the margin.
Methodology
Counts, prices, work rates, schedules and outcomes in typical cases are inputs to the Anvilfield research model. Calculations use the stated scope, formulas, cost inclusions and exclusions. Cited public records and technical documents support their attributed facts.
FAQ
How do you find aboveground storage tank inspection prospects?
Combine state tank records, permit research, dated observations, and operator confirmation within your service area. Verify the tank type, inspection basis, records, buyer, and access before estimating. Keep an unconfirmed tank location at research stage.
Can aerial imagery prove that a tank needs inspection?
No. Use imagery to locate visible features and prepare questions. Contents, capacity, inspection status, and fitness for service require other evidence. Confirm the operator's inspection program and report history before identifying a due task.
Does every aboveground storage tank require an SPCC plan?
No. EPA's screen considers facility activity, oil handling, discharge potential, countable capacity, and exclusions. The aboveground threshold is greater than 1,320 US gallons in aggregate. Complete the full facility screen rather than deciding from one tank's appearance or fill level.
How often do aboveground storage tanks need inspection?
Use the applicable inspection program and controlling requirements to establish the interval. EPA does not set one universal SPCC frequency for aboveground containers. Record the task, standard and edition, previous report, and basis for its next date.
Should you request API 653 or STI SP001 inspection?
Confirm the tank and applicable program first. STI's public overview distinguishes shop fabricated and small field erected tank work from larger field erected tank work associated with API 653. Have a qualified inspector confirm applicability and scope before requesting a specific package.
How do you check a tank inspection company's credentials?
Check the named personnel against the actual inspection scope. For API credentials, use API's Inspector Status Verification resource and resolve uncertain status with API. Also confirm required local authorizations, examination methods, subcontractors, and report responsibility.
Is a discovery walkdown a formal integrity inspection?
No. The discovery visit in this guide reconciles assets, observations, and records gaps. Formal integrity work needs its own applicable method, qualified personnel, defined report, and operating arrangements. Specify the deliverable before comparing inspection prices.
How much should a tank inspection qualification visit cost?
The sample discovery visit here is $2,735 before tax for records review, an external visit, and reporting. It excludes formal integrity inspection. Price each visit from its agreed scope, staffing, travel, and access.
Does a closed tank registry record identify a current customer?
No. Confirm current tank and facility status, then verify the operator and equipment. Historical and cleanup records can remain in public datasets. A record helps research; an identified buyer and an agreed task establish a commercial opportunity.