Why Double Wall Fiberglass Tanks Are Safer for Petroleum and Fuel Storage

Double wall fiberglass tanks are safer for petroleum and fuel storage because their built-in secondary containment eliminates the risk of undetected leaks, preventing soil and groundwater contamination that single-wall steel tanks cannot guarantee. This article explains the engineering principles, regulatory context, and practical selection criteria that make double wall FRP tanks the preferred choice for fuel storage, and how manufacturers like Hebei Yongchang Composite Material Technology Co., Ltd. produce these systems to meet demanding industrial standards.

Introduction

Petroleum and fuel storage carries a unique risk profile. A single undetected leak from an underground tank can contaminate thousands of cubic meters of soil and groundwater, creating cleanup liabilities that dwarf the original cost of the tank. Traditional single-wall steel tanks corrode from both the outside (soil moisture, electrolysis) and the inside (water and sulfur compounds in fuel). The industry's answer has evolved: double wall fiberglass tanks with interstitial monitoring.

Why double wall fiberglass tanks are safer for petroleum and fuel storage comes down to three factors: the corrosion resistance of the fiberglass laminate itself, the redundant barrier created by the double-wall design, and the continuous leak detection that the interstitial space enables. This article walks through the design principles, installation considerations, and verification steps you need to specify a double wall FRP tank with confidence. Relevant specifications and application guidance are available through GRP/FRP Storage Tank.

Key Takeaways

• Double wall construction provides secondary containment, catching leaks before they reach the environment
• Fiberglass (FRP/GRP) resists corrosion from both petroleum products and soil chemistry, unlike bare steel
• Interstitial monitoring systems give continuous, verifiable leak detection between the two walls
• Proper specification requires attention to resin selection, wall thickness, and manufacturing standards
• Double wall tanks reduce long-term liability and insurance exposure despite higher upfront cost

What You Need Before Starting

Before you specify a double wall fiberglass tank for petroleum storage, gather the following:

• Site soil chemistry data: pH, chlorides, sulfates, and presence of stray currents that affect corrosion
• Fuel type and temperature: gasoline, diesel, ethanol blends, or jet fuel each have different chemical compatibility requirements
• Local regulatory requirements: many jurisdictions mandate secondary containment and leak detection for underground fuel storage
• Capacity and footprint constraints: determine whether a GRP/FRP Storage Tank configuration fits your site layout
• Budget for the full lifecycle: include monitoring equipment, maintenance, and potential remediation costs in your comparison

Step 1 — Understand Why Single-Wall Steel Fails

What to Do

• Review the corrosion mechanisms that affect steel tanks: external corrosion from soil moisture and chlorides, internal corrosion from water and microbial activity in fuel
• Examine the statistics: industry studies indicate that a significant percentage of underground steel tank leaks originate from corrosion pitting, often within 15–20 years of installation
• Consider the detection problem: a single-wall tank gives no warning before product escapes into the environment

Why This Matters

Steel tanks rely on cathodic protection and coatings to slow corrosion, but these systems require ongoing maintenance and monitoring. When they fail, the leak is already in the ground. The fundamental safety advantage of double wall fiberglass tanks is that they change the failure mode: instead of "leak then discover," you get "detect then act." The outer wall contains the product while the monitoring system alerts you to the breach.

Common Mistakes to Avoid

• Assuming cathodic protection is set-and-forget: impressed current systems need quarterly verification of rectifier output and anode bed integrity
• Ignoring internal corrosion: water settles at the bottom of fuel tanks, creating an electrolytic cell that corrodes steel from the inside where no coating reaches
• Skipping soil resistivity testing: high-resistivity soils reduce the effectiveness of galvanic protection systems

Step 2 — Examine the Double Wall Fiberglass Design

What to Do

• Understand the construction: a double wall FRP tank consists of an inner primary wall, an outer secondary wall, and an interstitial space between them
• Verify the manufacturing process: quality tanks are produced using filament winding, where continuous glass fibers are saturated with resin and wound onto a mandrel under computer control
• Check the interstitial space: it must be designed to allow leak detection fluid or gas to move freely between the walls

Why This Matters

Hebei Yongchang Composite Material Technology Co., Ltd., based in the Economic Development Zone, Jizhou District, Hengshui City, Hebei Province, operates six fully automatic microcomputer-controlled filament winding production lines across a facility covering more than 50,000 square meters. This level of process control matters because the filament winding process determines wall thickness uniformity, fiber-to-resin ratio, and structural integrity. A properly wound double wall tank has consistent laminate quality that resists both the stored fuel and the surrounding soil environment.

The double wall configuration provides two independent barriers. If the inner wall develops a pinhole or crack, the outer wall contains the product. The interstitial space between them is continuously monitored, so you know about the leak immediately rather than discovering it months later during a site assessment.

Common Mistakes to Avoid

• Confusing double wall with double bottom: a double bottom only protects the lower portion of the tank; a true double wall surrounds the entire circumference
• Accepting vague quality claims: ask for the resin type, glass content percentage, and wall thickness specifications in writing
• Overlooking the monitoring system: the double wall is only as good as the leak detection method connected to it

Step 3 — Select the Right Resin and Laminate System

What to Do

• Choose a resin system compatible with your specific fuel: vinyl ester resins offer excellent resistance to aromatic hydrocarbons found in gasoline and jet fuel
• Specify the corrosion barrier: a resin-rich inner layer (typically 2.5–5.0 mm) protects the structural laminate from chemical attack
• Verify the structural wall thickness: typical FRP tank walls range from 6 mm to 20 mm depending on diameter and burial depth, with the outer wall often specified at a minimum of 3 mm for secondary containment

Why This Matters

The chemical compatibility of the resin determines whether the tank survives decades of contact with petroleum products. Polyester resins are adequate for some applications, but vinyl ester provides superior resistance to the aromatic content in modern fuels. The corrosion barrier is the first line of defense; it is resin-rich and reinforced with a surface veil to prevent capillary wicking of chemicals into the structural laminate.

For underground installations, consider the Fiberglass Underground Storage Tank design, which is engineered specifically for burial loads. These tanks must withstand soil pressure, groundwater buoyancy, and traffic loads while maintaining their structural integrity over decades of service.

Common Mistakes to Avoid

• Using a general-purpose tank for fuel service: fuel compatibility requires specific resin selection, not a one-size-fits-all approach
• Under-specifying the corrosion barrier: a thin barrier layer may be adequate for water but fails prematurely with aggressive hydrocarbons
• Ignoring the outer wall thickness: the secondary wall must be robust enough to contain the full volume of product if the inner wall fails completely

Step 4 — Evaluate Leak Detection and Monitoring Options

What to Do

• Choose between liquid-phase and vapor-phase interstitial monitoring
• Specify the alarm and reporting system: modern systems provide continuous remote monitoring with automated alerts
• Plan for periodic verification: even the best monitoring system requires scheduled testing to confirm it works

Why This Matters

The interstitial space is the key safety feature of a double wall tank. Liquid-phase monitoring uses a sensor that detects fuel or water in the interstitial space. Vapor-phase monitoring detects hydrocarbon vapors, which can indicate a leak even before liquid reaches the sensor. Both methods provide continuous, real-time data that single-wall tanks simply cannot offer.

The table below compares the two primary monitoring approaches:

Monitoring Method	Detection Medium	Response Time	Best For
Liquid-phase sensor	Liquid in interstitial space	After leak reaches sensor	Sites with shallow groundwater
Vapor-phase sensor	Hydrocarbon vapors	Earlier detection possible	Sites with deep groundwater or dry soil
Continuous electronic	Both liquid and vapor	Real-time remote alerts	High-risk or regulated sites
Manual dipstick	Visual inspection	At scheduled intervals	Low-budget or low-risk applications

Common Mistakes to Avoid

• Choosing vapor-phase monitoring in wet sites: water in the interstitial space can block vapor migration and delay detection
• Skipping the annual sensor test: monitoring equipment fails like any other component; test it on a schedule
• Not integrating with your SCADA system: remote monitoring is only useful if someone actually receives and acts on the alarm

Step 5 — Compare Double Wall FRP Against Alternatives

What to Do

• Build a comparison matrix covering steel with cathodic protection, steel with fiberglass lining, and double wall FRP
• Include lifecycle costs: initial purchase, installation, monitoring, maintenance, and expected service life
• Factor in regulatory compliance: double wall tanks with interstitial monitoring often satisfy secondary containment requirements without additional external liners

Why This Matters

The safety advantage of double wall fiberglass tanks becomes clear when you compare them side by side with alternatives. Steel tanks, even with cathodic protection, have a finite corrosion life. Fiberglass-lined steel tanks protect the interior but leave the exterior vulnerable. Double wall FRP eliminates both corrosion paths while providing built-in secondary containment.

For above-ground installations, the GRP/FRP Vertical Storage Tank configuration offers the same double wall safety benefits with a footprint optimized for vertical storage. These tanks are widely used in chemical engineering, light industry, pharmacy, metallurgy, and brewing applications where corrosion resistance and leak prevention are critical.

Comparison Factor	Single-Wall Steel	Steel with Cathodic Protection	Double Wall FRP
Corrosion resistance	Poor	Moderate	Excellent
Secondary containment	None	None	Built-in
Leak detection	None	None	Continuous
Expected service life	15–20 years	20–30 years	30+ years
Maintenance requirements	High	High	Low
Lifecycle cost	Moderate initial, high long-term	High initial, moderate long-term	Higher initial, lower long-term

Common Mistakes to Avoid

• Comparing only initial purchase price: installation, monitoring, and potential remediation costs often exceed the tank price
• Assuming all fiberglass tanks are equal: resin quality, wall thickness, and manufacturing process vary significantly between manufacturers
• Overlooking the cost of a leak: a single undetected leak can cost millions in remediation, fines, and legal liability

Step 6 — Specify, Verify, and Install Correctly

What to Do

• Write a detailed specification covering resin type, wall thickness, double wall configuration, and monitoring system requirements
• Verify manufacturer credentials: check for ISO 9001 quality management certification and ask for material test reports
• Plan the installation: proper bedding, backfill, and anchoring are essential for underground tanks
• Commission the system: test the interstitial space for integrity before backfilling and after installation

Why This Matters

A double wall fiberglass tank is only as safe as its specification and installation. The best tank in the world fails if it is installed in a poorly prepared excavation with sharp rocks in the backfill. Work with a manufacturer that has a proven track record: Hebei Yongchang Composite Material Technology Co., Ltd. has extensive experience producing filament wound fiberglass storage tanks, pipes, and related products for demanding industrial applications.

The company's anti-corrosion professional team combines theoretical knowledge with practical experience, providing one-stop service from specification through installation support. Their products are widely used in chemical engineering, light industry, pharmacy, metallurgy, and brewing industries, demonstrating the versatility and reliability of their manufacturing capability.

Common Mistakes to Avoid

• Skipping the pre-installation integrity test: pressurize the interstitial space and verify it holds pressure before backfilling
• Using improper backfill material: sharp rocks or debris can puncture the outer wall during installation
• Failing to anchor the tank in high groundwater areas: buoyancy can lift an empty tank out of the ground

Pro Tips for Success

• Request the resin formulation in writing: ask for the specific resin brand and type used in your tank, and verify it is compatible with your fuel chemistry
• Specify a minimum outer wall thickness of 3 mm: this ensures the secondary containment wall has sufficient structural integrity
• Install the monitoring system before backfilling: it is far easier to run sensor cables and verify function while the tank is accessible
• Keep detailed installation records: photographs, test results, and backfill documentation protect you in the event of a future claim
• Schedule annual integrity testing: even with continuous monitoring, a physical inspection of the interstitial space confirms system function

Frequently Asked Questions

How long do double wall fiberglass tanks last?

Double wall FRP tanks typically provide 30 or more years of service life when properly specified and installed. The fiberglass laminate does not corrode like steel, and the double wall design protects the primary wall from external damage. Actual service life depends on fuel chemistry, soil conditions, and installation quality.

Are double wall fiberglass tanks required by law?

Many jurisdictions require secondary containment and leak detection for underground fuel storage, and double wall tanks with interstitial monitoring satisfy these requirements. The specific regulations vary by country and region, so check with your local environmental agency. Some areas also mandate double wall construction for above-ground fuel storage near waterways or sensitive receptors.

Can double wall fiberglass tanks store ethanol-blended fuels?

Yes, but resin selection is critical. Ethanol blends are more aggressive than pure gasoline, particularly to polyester resins. Specify a vinyl ester resin system with an appropriate corrosion barrier for ethanol-blended fuel service. Verify the manufacturer's chemical compatibility data for your specific fuel blend.

How does the interstitial monitoring system work?

The interstitial space between the inner and outer walls is connected to a monitoring port. Liquid-phase sensors detect fuel or water that enters the space, while vapor-phase sensors detect hydrocarbon vapors. Continuous electronic monitoring systems transmit data to a control panel or remote monitoring station, providing real-time alerts if a leak occurs.

What is the cost difference between single-wall and double wall fiberglass tanks?

Double wall tanks typically cost 30–50% more than equivalent single-wall tanks. However, this premium is offset by the elimination of external leak detection systems, reduced insurance premiums, and the avoided cost of potential environmental remediation. Over a 30-year service life, double wall tanks often prove more economical.

Conclusion

Why double wall fiberglass tanks are safer for petroleum and fuel storage is now clear: they combine corrosion-resistant FRP construction with redundant containment and continuous leak detection. The double wall design changes the failure mode from "leak then discover" to "detect then act," preventing the soil and groundwater contamination that plagues single-wall steel tanks. The corrosion resistance of the fiberglass laminate eliminates the primary failure mechanism of steel, while the interstitial monitoring system provides real-time awareness of any breach.

For your next fuel storage project, specify a double wall fiberglass tank from a manufacturer with proven filament winding capability and a track record of quality. Request detailed specifications, verify resin compatibility with your fuel chemistry, and plan for proper installation and commissioning. The upfront investment in a double wall system pays dividends in reduced liability, lower maintenance, and decades of trouble-free service. Your first step is to contact a qualified manufacturer and discuss your specific storage requirements.

Underground Fiberglass Tank Leak Detection Requirements Fully Explained

Underground fiberglass tank leak detection requirements are the set of regulatory, technical, and operational standards—including EPA 40 CFR Part 280, API 1615, and PEI RP100—that mandate how double-wall FRP tanks, interstitial monitoring systems, and manual gauging procedures must be designed, installed, and tested to prevent soil and groundwater contamination. This guide explains the full compliance framework for leak detection on underground fiberglass storage tanks, covering every method from automatic tank gauging to statistical inventory reconciliation, and provides a step-by-step path to regulatory compliance for facility owners, environmental engineers, and EHS managers. Relevant specifications and application guidance are available through GRP/FRP Storage Tank.

Key Takeaways

• EPA regulations require leak detection on all underground storage tanks, with specific timelines and methods depending on tank age and installation date
• Double-wall fiberglass tanks with interstitial monitoring offer the most reliable and cost-effective compliance path
• Monthly monitoring methods include automatic tank gauging, continuous in-tank leak detection, and statistical inventory reconciliation
• Annual line testing and periodic tightness testing remain mandatory for piping systems
• Proper record-keeping for at least 5 years is non-negotiable for regulatory audits
• Choosing the right tank construction—like a GRP/FRP Storage Tank—simplifies compliance from day one

What You Need Before Starting

Before you can implement a compliant leak detection program, you need to understand the regulatory landscape and your tank's specific configuration. Here is what to gather:

• Tank registration documents: Your state's environmental agency requires UST registration, including tank age, capacity, and construction type
• Tank specifications: Confirm whether your tank is single-wall or double-wall, and what materials were used in construction
• Piping layout diagrams: Pressurized or suction piping systems have different testing requirements
• Existing monitoring equipment: Inventory of current leak detection hardware, including probes, sensors, and gauges
• Compliance deadlines: Know your state's specific deadlines, which may be stricter than federal EPA requirements
• Certified installer contacts: Leak detection equipment must be installed and calibrated by trained professionals

The foundation of any compliant system starts with the tank itself. A properly manufactured Fiberglass Underground Storage Tank with factory-installed monitoring ports will save you thousands in retrofit costs later.

Step 1 — Determine Your Regulatory Classification

What to Do

• Identify whether your tank falls under federal EPA jurisdiction (most commercial tanks do)
• Check your state's UST program—about 30 states have state-approved programs that may exceed federal requirements
• Determine your tank's installation date, as this dictates which leak detection methods are acceptable
• Classify your piping as pressurized, suction, or gravity-fed, since each has separate testing rules

Why This Matters

The EPA's 40 CFR Part 280 regulation sets the baseline. Tanks installed after December 22, 1988, must have leak detection that can detect a release of 0.2 gallons per hour (gph) with a probability of detection of at least 95% and a probability of false alarm of no more than 5%. Older tanks face stricter interim requirements. Understanding your classification determines which of the approved methods below you can legally use.

Common Mistakes to Avoid

• Assuming state rules match federal rules: California, Florida, and New York have significantly stricter requirements
• Ignoring piping requirements: Many facilities focus on the tank and forget that piping must be tested annually
• Using unapproved methods: Manual tank gauging is only acceptable for tanks with capacities of 1,000 gallons or less

Step 2 — Choose Your Primary Leak Detection Method

What to Do

Select from the EPA-approved methods based on your tank configuration:

Method	Detection Threshold	Frequency	Best For
Automatic Tank Gauging (ATG)	0.1 gph	Monthly	Double-wall tanks with electronic probes
Continuous In-Tank Leak Detection	0.2 gph	Monthly	Tanks with 24/7 monitoring needs
Statistical Inventory Reconciliation (SIR)	0.1 gph	Monthly	Tanks with accurate dispensing records
Manual Tank Gauging	0.1 gph (weekly)	Weekly	Tanks ≤ 1,000 gallons
Interstitial Monitoring	Any release	Continuous	Double-wall fiberglass tanks

For most modern installations, interstitial monitoring on a double-wall fiberglass tank is the gold standard. The space between the inner and outer walls acts as a built-in containment system, and sensors placed in that space detect any product escaping the inner tank before it reaches the soil.

Why This Matters

The choice of method directly affects your operational costs and liability exposure. A double-wall GRP/FRP Vertical Storage Tank with interstitial monitoring eliminates the need for periodic tightness testing that interrupts operations. It also provides continuous protection rather than point-in-time snapshots.

Common Mistakes to Avoid

• Choosing ATG without verifying probe compatibility: Not all probes work with all tank geometries
• Skipping secondary containment: Single-wall tanks require more frequent and more expensive testing
• Ignoring sensor placement: Interstitial sensors must be placed at the lowest point of the interstitial space to detect liquid accumulation

Step 3 — Install and Calibrate Monitoring Equipment

What to Do

• Install electronic probes through factory-installed riser ports (never drill into an installed tank)
• Position interstitial sensors at the lowest point of the annular space
• Connect monitoring equipment to a certified console or remote telemetry system
• Calibrate all equipment according to manufacturer specifications—typically annually
• Verify that the system can detect both liquid and vapor-phase releases

Why This Matters

Proper installation is where most compliance failures occur. The EPA requires that leak detection equipment be installed, calibrated, and operated according to manufacturer instructions. A 2019 industry survey found that nearly 40% of UST compliance violations stemmed from improperly installed or maintained monitoring equipment, not from actual tank failures.

Common Mistakes to Avoid

• Using non-certified installers: Equipment warranties and regulatory acceptance depend on certified installation
• Skipping annual calibration: Drift in sensor accuracy can push you below the 95% probability of detection threshold
• Ignoring alarm testing: Monthly alarm verification is required, not just annual calibration

Step 4 — Implement Monthly Monitoring and Record-Keeping

What to Do

• Run automatic tank gauging tests at least once every 30 days
• Document every test result, including date, time, method used, and results
• Record all inventory reconciliation data, including deliveries and dispensing volumes
• Maintain records for at least 5 years (some states require 10 years)
• Report any suspected release to your state agency within 24 hours

Why This Matters

The EPA requires that all monitoring results be maintained for at least 5 years. These records are the first thing inspectors request during compliance audits. A clean record-keeping system demonstrates due diligence and can significantly reduce penalties if a release is later discovered.

Common Mistakes to Avoid

• Relying on memory: Even small gaps in records can trigger violations
• Failing to document false alarms: Every alarm, even false ones, must be logged with the investigation outcome
• Deleting old records: Five years is the minimum—keep everything longer if possible

Step 5 — Conduct Annual Line Testing and Periodic Tightness Testing

What to Do

• Test pressurized piping annually using line leak detectors or annual line testing
• Conduct tank tightness testing every 3 years for tanks using monthly monitoring methods
• Use certified testers who follow NFPA 329 or PEI RP100 protocols
• Verify that test methods can detect releases of 0.1 gph with 95% confidence
• Document all test results and maintain them with your monitoring records

Why This Matters

Tank tightness testing is the safety net that catches slow leaks that monthly monitoring might miss. While interstitial monitoring on double-wall tanks reduces the frequency of required tightness testing, it does not eliminate it entirely. The EPA's 40 CFR Part 280.43 requires that all UST systems undergo periodic tightness testing unless they use continuous monitoring methods.

Common Mistakes to Avoid

• Using volumetric testing on fiberglass tanks: Temperature-induced expansion can cause false readings
• Skipping line testing: Pressurized piping fails more often than tanks in many facilities
• Ignoring test method limitations: Some test methods cannot detect leaks below 0.1 gph reliably

Step 6 — Prepare for Inspections and Audits

What to Do

• Conduct a self-audit at least annually, using your state's inspection checklist
• Verify that all equipment certifications are current and on file
• Test all alarms and sensors monthly, documenting each test
• Review your record-keeping system for completeness and accessibility
• Train staff on emergency response procedures for leak alarms

Why This Matters

State and federal inspectors conduct routine compliance inspections, typically every 1 to 3 years depending on your state's program. Facilities with documented self-audits and complete records face significantly fewer violations and lower penalties. The EPA's penalty structure allows up to $15,000 per day per violation for non-compliance.

Common Mistakes to Avoid

• Waiting for inspections to find problems: Proactive self-audits catch issues early
• Ignoring secondary containment requirements: Many states now require secondary containment for both tanks and piping
• Failing to update compliance plans: Regulations change—review your program annually

Pro Tips for Success

• Invest in double-wall fiberglass tanks from the start: The upfront cost premium of roughly 15–25% over single-wall tanks pays for itself through reduced testing requirements and lower liability exposure
• Use remote telemetry monitoring: Cloud-based systems provide continuous data access and automated record-keeping, eliminating manual documentation errors
• Work with a single compliance partner: A manufacturer that offers both tanks and monitoring equipment simplifies warranty and liability questions
• Conduct quarterly visual inspections: Walk your facility and check for signs of leaks, including vegetation changes, odors, or surface staining
• Document everything digitally: Paper records get lost; digital records are searchable and permanently archived

Frequently Asked Questions

What is the most common leak detection method for underground fiberglass tanks?

Automatic tank gauging (ATG) is the most widely used method for double-wall fiberglass tanks. It combines electronic probes with a control console to detect leaks as small as 0.1 gallons per hour. ATG systems also provide continuous inventory monitoring, which helps detect theft, evaporation losses, and dispensing errors.

How often must underground storage tanks be tested for leaks?

Monthly monitoring is required for most tanks, using methods like ATG, continuous in-tank detection, or statistical inventory reconciliation. Tanks with interstitial monitoring on double-wall construction may qualify for reduced testing frequency. Tightness testing is typically required every 3 years unless continuous monitoring is in place.

Can manual tank gauging be used for leak detection?

Manual tank gauging is only acceptable for tanks with capacities of 1,000 gallons or less. For these smaller tanks, weekly static measurements are required. Tanks larger than 1,000 gallons must use electronic or statistical methods that meet the EPA's 0.1 gph detection threshold.

What records must be kept for UST leak detection compliance?

You must maintain all monitoring results, calibration records, tightness testing reports, and alarm logs for at least 5 years. Some states require 10 years of records. Documentation must include dates, methods used, results, and any corrective actions taken.

Do fiberglass tanks corrode like steel tanks?

No. Fiberglass reinforced plastic (FRP) tanks are inherently corrosion-resistant, which is why they are preferred for underground installations. Unlike steel tanks that require cathodic protection and corrosion monitoring, fiberglass tanks do not rust or corrode. This eliminates a major failure mode and simplifies leak detection compliance.

Conclusion

Underground fiberglass tank leak detection requirements are comprehensive but manageable when you approach them systematically. The key is understanding that compliance is not a one-time event—it is an ongoing operational discipline that requires the right equipment, trained personnel, and meticulous record-keeping. By choosing double-wall fiberglass construction with interstitial monitoring, you dramatically reduce both your compliance burden and your environmental liability. Start by verifying your tank's regulatory classification, then implement the monitoring methods that match your configuration. Document everything, test your equipment monthly, and conduct annual self-audits. The upfront investment in quality equipment and proper installation pays dividends in reduced testing costs, fewer violations, and peace of mind. If you are planning a new installation or upgrading an existing one, work with a manufacturer that understands both tank construction and leak detection integration—your compliance program is only as strong as the tank it monitors.