Complete Guide For Homeowners: Why Underground Oil Tanks Are a Growing Concern

If you're buying or selling a home,  there's a good chance you've encountered the common oil tank question, "Was there an oil tank on this property?".  Oil tanks from the early 1900s through the 1980s were installed long before the EPA and State DEPs were established, meaning environmental regulations weren't part of the equation.

Today's reality? Any oil tank can leak, and cleanup costs fall squarely on the property owner at the time of removal.

The Hidden Risk of Oil Tank Leaks

Here's what most homeowners don't realize: many modern oil tanks come with just a three (3) year warranty. There are tanks with longer warranties for sure, but a ten year warranty on a 12 year old tank, is well out of warranty.  If your tank is older, it is likely well past its expected lifespan. Leaks typically occur along the bottom, where corrosion is worst, and exactly where you'd never notice them. A few drips here and there go completely undetected.

The Real Estate Reality Check

Trying to sell a house with an old oil tank? Buyers, their attorneys, and realtors all know the risks. We've seen sales fall through multiple times or homes sit on the market for six months or more before sellers accept that oil tanks are not selling features. Unlike walk-in closets and open floor plans, underground oil tanks often deter buyers from making an offer.

The Cheapest Quote Isn't Always the Best Deal

When it's time to remove your tank, it's tempting to go with the lowest bid. But here's the truth: the cheapest price often includes the worst service, and you'll end up paying more in the end 90% of the time.

Many budget contractors won't discuss potential issues because they don't want to "scare" you—and honestly, most homeowners don't want to hear it either. But this lack of preparation leads to expensive surprises.

What Every Oil Tank Removal Contract Must Include

1. Soil Sampling and Testing

Why Sampling & Testing matters. Just like cholesterol, you can't know contamination levels without testing.

Soil samples cost around $130  each (depending on the size of the tank, it could be 2-5 samples) and should always be included with tank removal. Getting samples while the equipment is already on-site is far cheaper than returning later, which can cost thousands. Testing is especially critical when a previously unknown tank is discovered during a tank sweep.

2. A Clear Plan for Tank Leaks

Let's be realistic: finding holes in a 20, 30, or 50-year-old tank isn't shocking. Your removal company should explain upfront what happens if your tank does or doesn't leak.

Important: If holes are found, your local construction office will flag the tank as a leak and require state reporting. A hole provides "reasonable cause" to believe the tank leaked, putting the burden on you to prove otherwise. 

3. Proper Testing If Contamination Is Found

You must test to determine if oil levels are above or below regulatory standards. Skip this step, and remediation will be assumed necessary.

When contamination requires cleanup, the next step is delineation, which is defining the contaminated area's boundaries. Smaller areas are faster and cheaper to address. Larger contaminated zones can extend across property lines or under structures, creating access challenges.

4. A Tank Closure Report

Every tank removal needs documentation. Commercial tanks legally require closure reports submitted to the state, and residential tanks should, too.

A proper closure report:

• Explains the work in plain language
• Documents whether the tank leaked
• Outlines whether remediation is needed (and why)

Having written proof that your removed tank didn't leak is invaluable for future property transactions.

Red Flag: What a Bad Contract Looks Like

Here's an actual scope of work from a company you should avoid:

• Obtain permit
• Call utility markout
• Excavate and expose the tank
• Remove overburden soil and concrete
• Saw cut and clean the tank
• Remove and dispose of the tank

What's missing? Soil sampling. Testing protocols. A closure report. Any mention of what happens if the tank leaks.

This contract assumes perfection and leaves you exposed to massive, unexpected costs.

How to Protect Yourself

The best time to read this is before your tank is removed. If you're planning:

• Choose a contractor who clearly explains all possible scenarios
• Ensure your contract includes soil sampling, testing, and a closure report
• Ask what happens if contamination is found
• Don't let price be your only deciding factor

Already Discovered a Leak?

If you've already had your tank removed and discovered contamination, professional delineation services can define the problem, develop accurate remediation costs, and provide data you can use to solicit competitive quotes.

The Bottom Line

Oil tank removal doesn't have to be a nightmare. Working with an experienced, transparent contractor who prepares you for all outcomes—and includes proper testing and documentation—protects both your property value and your peace of mind. For more information on buying a house with an underground oil tank click here. 

🏡 Important Information for New Jersey Homebuyers and Realtors Regarding the 2022 Lead Paint Law

There is a new law in New Jersey that you cannot afford to overlook if you are buying or selling or renting a home, especially one that was constructed before 1978. Now that the New Jersey Lead-Based Paint Inspection Law is in force, it has significant ramifications for homebuyers, landlords, and realtors. Knowing this law is essential to avoiding delays, penalties, or unforeseen expenses at the closing table, whether you're managing rental properties, buying your first home, or representing a seller/buyer.

"🎯" The New Jersey Lead Paint Law: What Is It?
New Jersey mandated lead-based paint inspections for some residential rental properties constructed prior to 1978 as of July 22, 2022. The aim? Since lead poisoning is completely preventable but still common in older housing, it is important to identify and address lead hazards before children are exposed.

🛑 To whom does this law apply?
This law mainly affects:

• Owners of rental properties prior to 1978
• Realtors who list or sell properties that are impacted
• Homebuyers buying rental properties or investment properties
• Developers and property managers dealing with an older housing stock
• Depending on the municipality's classification (exempt vs. non-exempt), a property that meets the requirements must be examined visually or through dust wipe sampling for lead-based paint hazards.

🏚️Why 1978 Is Important
In 1978, the federal government outlawed the use of lead-based paint in homes. Lead-based paint was most likely used in homes constructed prior to that time.  For this reason, New Jersey is focusing on properties from this era, particularly rental properties where children might be present.

📝 What Realtors Must Understand
Informing clients of their obligations under the new law is a critical function of realtors. Here's how to safeguard your transactions:

• Inquire early: Was the property constructed prior to 1978? Has it ever been a rental?
• Look for exemptions: Because of their low risks of lead exposure, some municipalities are exempt.
• Notify investors and landlords that inspections must be performed at tenant turnover or every three years, whichever occurs first.
• Collaborate with certified inspectors: Certified lead evaluation contractors are required to conduct inspections.

🏠 Things Homebuyers Need to Be Aware Of
You may inherit compliance responsibilities if you purchase a home that has been rented or may be rented. This comprises:

• Making certain that inspections are current
• Setting aside money for possible remediation
• Maintaining precise records for upcoming leases or sales
• It's not only wise, but also required by law, to have a lead paint inspection done if you're purchasing a multifamily building or intend to rent out a unit.

💰 Penalties, charges, and responsibility
Fines for noncompliance can reach $1,000 per week until the problem is fixed. Additionally, the cost of remediation may vary based on the extent of the lead hazard, and municipalities may impose inspection fees.

🧰 How to Maintain Compliance

• Make an appointment for a certified contractor to inspect the home for lead paint.
• Any lead hazards should be addressed right away.
• Maintain records; you'll need them for upcoming property sales or inspections.
• Use the EPA's "Protect Your Family from Lead in Your Home" guide to inform prospective tenants and purchasers.

🧭 Do You Need Assistance Getting Around?
In New Jersey, Curren Environmental provides expert lead paint testing, inspections, and cleanup services. With more than 27 years of experience, we assist property owners in maintaining compliance and ensuring the safety of families.

👉 For a complete FAQ and to arrange an inspection right now, go to CurrenEnvironmental.com.

Concluding Remarks for Homebuyers and Realtors

If ignored, the New Jersey Lead Paint Law could be a game-changer. It's not just another rule. By working with knowledgeable inspectors, educating your clients, and incorporating compliance into your real estate strategy, you can stay ahead of the curve.

The Problem with Metal Detectors for Underground Storage Tank Detection 

Have you ever used a metal detector at the beach? You probably found pennies, nickels, dimes, maybe some paper clips or a thumb tack. But did you ever find that diamond ring or emerald necklace that would be like winning the lottery? Probably not.

That's exactly what it's like using a metal detector to find Underground Storage Tanks (USTs).

Why Metal Detectors Fail for UST Detection

Here's the fundamental problem: metal detectors find ALL metal, not just underground storage tanks. Consider what surrounds every home:

• HVAC units and air conditioning systems
• Chain-link fencing
• Reinforced concrete with rebar
• Underground utilities and pipes
• Electrical conduits and wiring

When you hire someone with an $800 metal detector who charges $200 to essentially "find a penny," you're not getting the precision you need for underground storage tank detection.

The Hidden Costs of Inaccurate Tank Detection

Real Case Study: A homeowner purchased a property after having a metal detector scan performed. When they later tried to sell, a potential buyer hired Curren Environmental to perform a GPR scan. Result? We found a leaking underground storage tank that the metal detector had missed entirely. The remediation cost exceeded $45,000.

Don't let this happen to you.

Why Ground Penetrating Radar (GPR) is Superior for Tank Scanning 

What is Ground Penetrating Radar?

Ground Penetrating Radar (GPR) is a geophysical method developed over the past thirty years specifically for shallow, high-resolution subsurface investigations. Unlike metal detectors, GPR uses high-frequency pulsed electromagnetic waves (10 MHz to 1,000 MHz) to create detailed underground maps.

Key Advantages of GPR for Underground Storage Tank Detection

1. Detects Non-Metallic Objects

• Finds plastic pipes and non-conductive materials
• Locates tanks regardless of material composition
• Identifies buried objects metal detectors completely miss

2. Real-Time Subsurface Imaging

• Provides immediate visual feedback
• Shows exact location and depth
• Offers adjustable digital color displays
• No waiting for data processing

3. Precision Over General Detection

• Specifically designed for underground tank scanning
• Distinguishes between tanks and other buried objects
• Reduces false positives dramatically

How GPR Technology Works

GPR operates by:

1. Propagating energy downward into the ground
2. Reflecting signals back from boundaries with electrical property contrasts
3. Creating detailed subsurface maps of solid buried objects
4. Providing real-time analysis for immediate decision-making

Professional GPR Equipment vs. Consumer Metal Detectors 

Investment in Professional Technology

Professional GPR units cost over $20,000 and require trained technicians to operate effectively. This isn't just equipment—it's an investment in:

• Accurate results the first time
• Avoiding costly mistakes like missed tanks
• Professional expertise in interpretation
• Comprehensive reporting and documentation

Optimal Scanning Conditions

GPR performs best in:

• Unpaved areas (grass, dirt, gravel)
• Non-landscaped spaces with minimal obstructions
• Areas without heavy concrete or asphalt coverage

Note: While signals may attenuate over solid ground cover like concrete or pavers, professional GPR can still detect underground storage tanks in these conditions.

Real-World Case Studies and Success Stories 

Case Study 1: The $20,000 Mistake

Situation: The Homeowner relied on a metal detector scan for the property purchase. Problem: Metal detector missed a leaking underground storage tank. Solution: GPR scan identified the tank location. Outcome: Tank removal and $20,000+ remediation required

Case Study 2: Inconclusive Metal Detective Results

Situation: Multiple properties with "inconclusive" metal detector scans. Problem: Recommendations to "dig it up" or get GPR scan. Solution: Curren Environmental GPR scanning Outcome: Definitive results without unnecessary excavation

Frequently Asked Questions About Underground Storage Tank Detection (GPR FAQ) 

Q: How much does professional GPR tank scanning cost compared to metal detection?

A: While GPR scanning has a higher upfront cost, it prevents expensive mistakes. Curren has seen up to $500,000 in soil remediation costs. 

Q: Can GPR detect tanks under concrete or pavement?

A: Yes, though signal quality may be reduced. Professional GPR equipment can penetrate various surface materials.

Q: How deep can GPR detect underground storage tanks?

A: GPR can typically detect tanks at depths of 10-15 feet, depending on soil conditions and tank size.

Q: Is GPR safe for my property?

A: Absolutely. GPR is non-invasive and doesn't damage landscaping, driveways, or structures.

The Bottom Line: GPR vs. Metal Detectors for Underground Tank Detection

Remember this key distinction:

• Metal detectors find anything metal in the ground
• Ground Penetrating Radar specifically scans for Underground Storage Tanks

When you're dealing with property purchases, environmental compliance, or potential contamination issues, you need precision, not guesswork.

Ready to Schedule Professional Underground Storage Tank Detection?

Don't risk the costly mistakes that come with inadequate tank detection methods. Contact Curren Environmental for professional GPR tank scanning services that deliver accurate, reliable results.

Professional GPR tank scanning protects your investment and ensures environmental compliance.

For more information about professional underground storage tank detection services, contact Curren Environmental. Our technicians use state-of-the-art GPR technology to provide accurate, reliable results for residential and commercial properties.

A comprehensive resource for homeowners and real estate professionals.

Introduction

Mold—it's the unwelcome houseguest that no homeowner or realtor wants to encounter. Beyond being unsightly, mold can compromise structural integrity, decrease property values, and pose serious health risks. Whether you're a homeowner wanting to protect your living space or a realtor helping clients maintain valuable properties, understanding mold prevention is essential.

In this guide, we'll explore practical, effective strategies to keep homes mold-free, identify early warning signs, and address small problems before they become costly nightmares.

Understanding Mold: Know Your Enemy

Mold is a type of fungus that reproduces by releasing spores into the air. These microscopic particles are virtually everywhere, both indoors and outdoors. When spores land on damp surfaces with organic material (like wood, drywall, or fabric), they can quickly develop into mold colonies under the right conditions.

What mold needs to grow:

• Moisture or high humidity (above 60%)
• Food source (almost any organic material)
• Oxygen
• Warm temperatures (typically 77-86°F, though some molds can grow in cooler environments)
• Time (as little as 24-48 hours under ideal conditions)

Common Household Mold Hot Spots

Bathrooms

• Shower stalls and curtains
• Under and around toilets
• Sink cabinets
• Grout between tiles
• Ceiling (especially if ventilation is poor)

Kitchen

• Under the sink
• Behind the refrigerator
• Microwave and other appliances
• Garbage disposal areas

Basement & Crawl Spaces

• Around foundation cracks
• Near sump pumps
• Around windows
• On exposed dirt

Other Problematic Areas

• Window sills and frames
• Air conditioning units and ductwork
• Attic spaces (especially around roof leaks)
• Laundry areas
• Under carpeting in damp areas

10 Essential Mold Prevention Strategies

1. Control Indoor Humidity

Maintain indoor humidity between 30% and 50%. Use dehumidifiers in naturally damp spaces like basements, and monitor levels with a hygrometer (humidity meter).

2. Ensure Proper Ventilation

• Install and use exhaust fans in bathrooms, kitchens, and laundry rooms
• Ensure dryer vents direct air outside, not into attics or crawl spaces
• Consider energy-efficient ventilation systems for whole-house humidity control

3. Address Water Issues Promptly

• Fix leaky roofs, windows, and pipes within 24-48 hours
• Inspect water-using appliances regularly (water heaters, washing machines, dishwashers)
• Clean and repair roof gutters to prevent water seepage

4. Improve Air Circulation

• Don't push furniture completely against the walls
• Open doors between rooms
• Use ceiling fans to increase air movement
• Open windows when weather permits (unless outdoor humidity is high)

5. Basement and Foundation Care

• Apply waterproof sealants to basement walls and floors
• Ensure proper grading around foundations to direct water away
• Consider installing a sump pump if basement flooding is an issue

6. Smart Bathroom Habits

• Squeegee shower walls after use
• Hang towels to dry completely
• Leave the shower doors/curtains open to allow drying
• Clean bathroom surfaces regularly with mold-inhibiting products

7. Strategic Landscaping

• Don't place mulch directly against home foundations
• Trim vegetation to allow airflow near exterior walls
• Ensure sprinklers don't spray directly onto the house

8. Mold-Resistant Building Materials

When renovating or building, consider:

• Mold-resistant drywall or Sheetrock
• Mold-inhibiting paints
• Paperless drywall for bathrooms
• Cement board in shower and bath areas

9. Regular Home Inspections

• Check hidden areas quarterly (behind appliances, under sinks)
• Inspect attics during rainy seasons
• Look for water stains, discoloration, or musty odors

10. HVAC Maintenance

• Change air filters regularly (every 1-3 months)
• Have ducts professionally cleaned if mold is suspected
• Consider UV lights for HVAC systems to kill airborne spores

Early Warning Signs of Mold Problems

Be alert for these indicators that mold might be developing:

• Musty, earthy odors
• Visible water stains or discoloration
• Peeling or bubbling paint/wallpaper
• Warping of wood
• Increased allergy symptoms indoors
• Excessive condensation on windows or pipes

Health Impacts: Why Mold Prevention Matters

Mold exposure can cause various health issues, especially for sensitive individuals:

• Nasal congestion, coughing, and wheezing
• Eye irritation
• Throat irritation
• Skin rashes
• Headaches
• More severe reactions in those with asthma or compromised immune systems

For Realtors: Protecting Your Clients and Listings

During Property Evaluations

• Know how to spot potential mold issues during walkthroughs
• Recognize "cover-up" signs like fresh paint in unusual areas
• Include mold inspections in standard home inspection recommendations

When Listing Properties

• Advise sellers on addressing mold issues before listing
• Document mold remediation efforts
• Understand disclosure requirements in your state
• Consider pre-listing inspections to identify problems early

Protecting Vacant Properties

• Set thermostats appropriately (usually above 55°F)
• Consider periodic dehumidification
• Ensure regular property checks
• Maintain minimal water use in plumbing systems

DIY Mold Cleaning Solutions

Important Safety Notes:

• Never mix bleach with ammonia or other household cleaners
• Always wear gloves and a mask when cleaning mold
• Ensure adequate ventilation

When to Call Professionals

Consider professional help when:

• Mold is inside HVAC systems
• There's mold growth after flooding with contaminated water
• You suspect hidden mold in walls or ceilings
• Residents experience health symptoms potentially related to mold
• Different smells that you are unfamiliar with, especially in attics, crawl spaces and basements

Seasonal Mold Prevention Calendar

Spring

• Check for winter water damage
• Clean gutters after spring blossoms
• Inspect the roof after winter weather
• Test the sump pump before spring rains

Summer

• Monitor air conditioning systems
• Check for condensation issues
• Inspect outdoor sprinkler spray patterns
• Clean and dry pool equipment properly

Fall

• Clear gutters of autumn leaves
• Check window seals before winter
• Inspect attic ventilation
• Examine the basement for summer condensation issues

Winter

• Monitor indoor humidity during the heating season
• Check for ice dams on roofs
• Ensure proper ventilation when using humidifiers
• Inspect pipes in cold areas for condensation

Conclusion

Preventing mold is far easier and more cost-effective than addressing an established problem. By implementing these strategies, homeowners can protect their health and property value, while realtors can better serve clients by identifying potential issues early.

Remember, the key to successful mold prevention lies in controlling moisture, ensuring proper ventilation, and staying vigilant through regular inspections. Taking these proactive steps today can save thousands in remediation costs tomorrow.

The Critical Difference in Oil Tank Sweep Technology That Could Save You Thousands

When purchasing real estate, oil tank sweeps are among the most essential environmental inspections homebuyers request. However, not all oil tank detection methods offer equal reliability. Understanding the difference between basic metal detectors and advanced Ground Penetrating Radar (GPR) technology could save you thousands in unexpected remediation costs.

The Limitations of Standard Metal Detectors

Most budget oil tank sweep companies use simple metal detectors—the same technology hobbyists use to find coins at the beach. While these devices can detect metal objects underground, they provide extremely limited information:

• No visual representation of the buried object
• Cannot determine the precise size or orientation of the tank
• Cannot differentiate between a tank and other metal debris
• No depth information or dimensional data
• Frequently result in false positives and misidentification

Real-World Consequence: We recently worked on a property where a metal detector survey incorrectly identified an oil tank as running under a concrete driveway. When we removed the tank, we discovered it ran parallel to the driveway. This single error would have cost the homeowner an unnecessary $1,200 in concrete restoration.

The GPR Advantage: Seeing What's Actually Underground

Ground Penetrating Radar (GPR) works like sonar for the earth—sending signals into the ground that reflect off buried objects, creating detailed images of what lies beneath the surface. This advanced technology offers crucial benefits:

• Creates visual representations of buried objects
• Determines precise size, depth, and orientation of tanks
• Differentiates between tanks and other underground structures
• Identifies tank features, including fill and vent pipes
• Detects non-metallic objects that metal detectors miss completely

Why Professional GPR Tank Sweeps Are Worth the Investment

GPR oil tank sweeps typically cost a few hundred dollars more than basic metal detector surveys. However, this small upfront investment provides significant advantages:

1. Superior Accuracy: GPR technology provides detailed images of underground structures, not just "beeps" when metal is detected
2. Cost Savings: Prevents expensive excavation mistakes and unnecessary property damage
3. Comprehensive Detection: Identifies both metal and non-metal underground features
4. Professional Expertise: GPR operators typically have extensive experience with actual tank removal

The Hidden Risk of Budget Tank Sweep Services

Companies using only metal detectors often have:

• Minimal startup costs (just $1,000 for basic equipment)
• Limited insurance coverage for errors and omissions
• Less experience with actual tank removal operations
• No visualization capabilities for underground objects

Experience Matters: The Curren Environmental Difference

At Curren Environmental, we've been locating and removing oil tanks for nearly 30 years. Our experience has taught us that metal detectors alone are unreliable, which is why 100% of our residential and commercial oil tank sweeps utilize GPR technology.

Our technicians undergo intensive training that includes:

• Hands-on experience with actual oil tank removal projects
• Recognition of historical indicators of oil heating systems
• Interpretation of GPR imaging data
• Understanding of various tank installation methods and locations

Conclusion: The Smart Investment in Property Protection

When purchasing property, the modest additional cost of a professional GPR oil tank sweep is insignificant compared to the potential thousands in remediation costs from an undetected tank. Remember: in environmental inspections, you truly get what you pay for.     

Contact Curren Environmental - Tank Sweep & Removal Experts

Are you staring at your mold test results feeling confused and concerned? You're not alone. Understanding mold test reports can feel like deciphering a foreign language. In this comprehensive guide, we'll break down exactly what those numbers and technical terms mean for your home and health.

Types of Mold Testing Explained

When investigating potential mold issues, professionals typically use two main testing methods:

Surface Sampling

Surface sampling directly targets visible suspicious growth to confirm whether mold is present and identify the specific types. These tests are performed using:

• Tape Lift Samples: A clear adhesive tape is pressed against the suspect area, "lifting" mold spores for laboratory analysis
• Swab Samples: A sterile swab collects material from the suspect surface

Surface sampling is ideal when you can visibly see discoloration or suspect growth. These tests tell you exactly what's growing on a specific surface but don't necessarily reveal the full extent of airborne contamination.

Air Sampling

Air sampling captures microscopic airborne mold spores that may be circulating throughout your home. This method involves:

• Running air through a specialized collection device
• Capturing spores on a slide or culture medium
• Laboratory analysis to identify types and quantities of mold present

Air samples provide crucial information about what you're breathing. They can detect problems even when mold isn't visible, making them essential for thorough assessments.

Most professional inspectors use non-viable air sampling, which counts all spores regardless of whether they can grow (viable) or not. This approach recognizes that even dead mold spores can cause health issues.

Understanding Your Mold Test Report

When you receive your mold test results, you'll typically see:

1. Types of mold identified: Different species names (like Aspergillus, Penicillium, or Stachybotrys)

2. Concentration levels: Usually shown as spores per cubic meter (spores/m³) for air samples

3. Comparison data: Indoor vs. outdoor levels and/or between different rooms

The interpretation is where many homeowners get confused. Here's the crucial point: There are no federal or state standards for "acceptable" mold levels in homes.

Why There Are No "Safe" Mold Standards

Unlike other environmental contaminants, mold doesn't have government-established Maximum Exposure Limits (MELs). This creates confusion but happens for several scientific reasons:

• Individual sensitivity varies dramatically - what affects one person may not affect another
• Sampling techniques have inherent limitations and can give different results even in the same space
• Mold species have different health impacts - raw numbers don't tell the whole story
• Limited research exists on precise exposure-response relationships in humans

Instead of rigid standards, professional mold assessors follow general interpretation principles based on:

1. Indoor vs. outdoor comparison: Generally, indoor mold counts should be lower than outdoor counts

2. Composition analysis: The types of mold found are often more important than total numbers

3. Distribution patterns: How mold types are distributed throughout the home

Red Flags in Your Mold Report

While there's no magic number that indicates a problem, certain findings should raise concerns:

1. Water-Damage Indicator Molds

Some mold types rarely appear in significant numbers without a moisture problem. High indoor levels of these "marker fungi" strongly suggest water damage:

• Aspergillus species
• Penicillium species
• Stachybotrys chartarum (sometimes called "black mold")
• Chaetomium species
• Ulocladium species

Finding these indoors at higher levels than outdoors almost always indicates a moisture problem requiring attention.

2. Indoor Levels Exceeding Outdoor Levels

Since mold naturally exists outdoors (in soil, mulch, and vegetation), outdoor air typically contains more mold spores than indoor air. When indoor levels exceed outdoor levels, especially of specific mold types, it suggests an indoor mold source.

3. Unusual Distribution Patterns

Different rooms showing dramatically different mold profiles can help pinpoint problem areas. For example, significantly higher levels in a basement compared to upstairs living spaces might indicate basement moisture issues.

Beyond the Numbers: What's Causing Your Mold Problem

The most important part of mold testing isn't just confirming its presence – it's understanding why it's there in the first place.

Mold requires moisture to grow. No exceptions. Finding the water source is essential for long-term resolution. Common culprits include:

• Leaking pipes or plumbing fixtures
• Poor drainage around foundations
• Roof or window leaks
• Condensation due to inadequate ventilation
• High indoor humidity (above 60%)
• Previous water damage that wasn't properly remediated

A comprehensive mold assessment should always include a thorough inspection for water intrusion and humidity issues.

Next Steps: What to Do After Receiving Mold Test Results

If your results indicate a mold problem, follow these steps:

1. Address the moisture source first - Removing mold without fixing the water problem guarantees it will return
2. Determine the extent of contamination - Small areas (under 10 square feet) might be manageable as a DIY project
3. Consider professional remediation for larger problems, especially if water-damage indicator molds are present
4. Create a remediation plan that includes containment to prevent cross-contamination
5. Consider post-remediation verification testing to ensure the issue is resolved

FAQs About Mold Testing

Q: Can mold testing tell me if my home is safe?
A: While testing can identify problematic conditions, there's no universal "safe" threshold. Results should be interpreted alongside visual inspection findings and health concerns.

Q: Should I test for mold if I can already see it?
A: If visible mold is present, testing may not be necessary except to identify specific species or determine airborne spread. The priority should be addressing the moisture source.

Q: How often should I test for mold?
A: Most homes don't need regular mold testing unless there are ongoing moisture issues, known health concerns, or after water damage events.

Q: Does the type of mold matter, or is all mold bad?
A: While all molds require moisture control, certain types (like Stachybotrys or Chaetomium) more strongly indicate serious water problems and may produce more potent allergens or irritants.

Need help interpreting your specific mold test results or addressing a mold problem? Our certified mold assessment professionals can provide personalized guidance. Contact us today for a consultation.

[Learn more about our mold inspection and remediation services →]

Read our comprehensive Mold FAQ →

Oil tank sweep inspections are gaining traction, leading to a surge of small companies equipped with metal detectors touting their professionalism. But can they truly deliver?

At Curren, we've encountered numerous oil tank sweep companies and reviewed their reports, often with disappointing results. In many cases, these one-person shops scan for an oil tank and provide a report that recommends  “oil tank removal”, which requires a few weeks to ramp up to perform with permits and utility mark out.  On the day of removal, it turns out to be little more than a sham, involving no oil tank in the ground at all. Unfortunately, clients are left feeling deceived, as their money is used for the tank removal, with no oil tank removed from underground. All the while, the real estate transaction is stalled.

It's time to choose a trustworthy partner for your tank removal needs—make informed decisions to protect your investment. What makes a great oil tank sweep inspection company? A company that removes oil tanks—one that knows oil tanks inside and out.

Oil Tank Sweep Fail.  The company said there was an oil tank.  No tank was found. 

Many inspections are performed when buying a home, and most are cursory visual inspections of the HVAC system, soffits, chimneys, foundation, plumbing, sidewalks, decks, swimming pools, etc.  These building components are commonly evaluated as part of your home inspection.  What is missed by many buyers is the environmental liability aspect of purchasing a home. Environmental can be asbestos, radon, mold, lead paint, and oil tanks.  Of all these environmental liabilities, oil tanks represent the biggest risk relative to remedial costs.  A hidden underground oil tank can cost a couple thousands of dollars to a new homeowner if it's not caught during the inspection process.  Worse is when an oil tank leaks, which can lead to costs in the tens of thousands of dollars.

If you're considering whether to get an oil tank sweep, remember this: when you decide to sell your home in the future, potential buyers may request one. Taking care of it now can save you stress and help you avoid surprises later. Over the past 30 years oil tank sweeps, oil tank scans, and/or oil tank inspections have become a common part of the home-buying process.

Why perform an oil tank sweep?

Oil tanks belong to the property and if you buy a home with an oil tank you purchased all the costs associated with the oil tank, including oil tank removal, soil testing, and the most expensive part soil remediation (if required). 

Oil heat was popular in the Northeastern United States from the 1930s to the mid-1980s, this time frame encompasses a large part of the homes in the Northeast, meaning chances are the home you are looking to purchase utilized oil heat in the past.  Also, homes built before 1930, most likely had oil heat. since coal was phased out as soon as a homeowner had a chance to switch, since coal required physical feeding of the furnace several times a day during the heating season.

 What percentage of tank sweeps find prior oil heat?

With over 30 years of experience with oil tanks, we have crunched the numbers and found an average of about 75% of the oil tank sweeps find evidence of prior oil heat.  That number should not be that surprising since natural gas really only became popular in the 1970s.

Who pays for the oil tank sweep?

Buyers typically pay for the oil tank sweep as it is part of their due diligence.  Due diligence is what a reasonable person would do to investigate a property for problems prior to ownership.

Do property owners ever do oil tank sweeps?

Most property owners do not perform oil tank sweeps as they do not want to find an oil tank.

Oil Tank scan with Ground Penetrating Radar (GPR) or metal detector?

You should use both GPR and a metal detector to be thorough when performing a tank scan or oil tank sweep. Rely on GPR the most as it is what commercial sites use, metal detectors are more to prove that the object found by GPR is metallic.  Remember, the best equipment is the most expensive, an $800.00 metal detector on Amazon.com should not be relied upon.

Metal detectors beep if they find iron sand (a real thing), buried pipes, get too close to a metal fence or a structure with metal (yes homes have metal) or simply encounter buried metallic trash.   GPR uses a screen so the geophysical technician can see the graphical image detected by the GPR antenna.     Larger signals are tanks, smaller signals are usually pipes.

Should the oil tank scan company perform removals?

Yes, the oil tank scan company should be responsible for removing oil tanks. This is because their technicians are well-versed in identifying underground and aboveground oil tanks, as well as recognizing other potential structures. Curren has been contacted by many clients who have hired oil tank scan companies and discovered anomalies or tank-like structures on their properties. These clients often request either a Ground Penetrating Radar (GPR) scan to further investigate or an immediate tank removal. The cost for tank removal typically exceeds $1,000, and in many cases, no actual tank is found. Instead, there may be large rocks, sewer lines, clay deposits, iron sand, or other materials that resemble a tank structure.

Lead Inspection with XRF

Lead paint inspections in New Jersey are required by law for rental properties. But what if you own the property as a rental, and you have completely stripped it down to the studs and rebuilt it? Can you do a lead-free inspection with an XRF, and be done with lead testing on that property forever?

Lead-Free Certification

XRF technology allows rental property owners the pathway for lead-free certification. If your rental property was built on or before 1978, then you must have a lead paint inspection, and there are two inspections, either the Lead Paint Risk Assessment, which is done every three years depending on tenant turnover, and is not lead-free. The Lead Paint Inspection is done with the XRF; if the inspection goes as planned, it will be the last lead inspection on that property. But there are stipulations when proceeding with the inspection.

How to prepare for the XRF Lead Paint Inspection

For starters, the rental property cannot look like this:

1. No one can be at the property, no renters, no animals roaming. NO ONE.
2. No furniture can be up against the wall. Technicians need to be able to reach the trim. Technicians should not move furniture or touch items of the renters.
3. The property should be well-lit.
4. The landlord should let the renter know exactly what is taking place and should meet or allow the technician access to the property, for the safety of the technician and the renter.
5. The inspection will take a good 3-4 hours if not more depending on the size of the property.
6. The property will have been completely rehabbed, meaning stripped down to the studs.

Failures of the XRF Lead Paint Inspection

Curren Environmental has come across many rental property owners who have asked for the XRF Lead Paint Inspection and have failed. Failures are due to the property not being rehabbed and property owners thinking they may be able to slip by with the XRF missing something. But let me tell you, Curren has done many Lead Paint Inspections with the XRF and we have found plenty of areas that have lead, and we have had to drop down to Lead Risk Assessment, which is done every two years in New Jersey. Before you ask for the Lead Pain Inspection, make sure that your property is lead ready, or lead-free!

Environmental regulations are confusing, Curren Environmental has over 26 years helping clients navigate the regulatory landscape. 

Buying a home built before the 1990s? Get a Tank Sweep.

Many inspections are performed when buying a home, and most are cursory visual inspections of the HVAC system, soffits, chimneys, foundation, plumbing, sidewalks, decks, swimming pools, etc.  These building components are commonly evaluated as part of your home inspection.  What is missed by many buyers is the environmental liability aspect of purchasing a home. Environmental can be asbestos, radon, mold, lead paint, and oil tanks.  Of all these environmental liabilities, oil tanks represent the biggest risk relative to remedial costs.  A hidden underground oil tank can cost a couple thousands of dollars to a new homeowner if it is not caught during the inspection process.  Worse is when an oil tank leaks, it can lead to costs up to tens of thousands of dollars. Are you ready for that?

When people are on the fence about doing an oil tank sweep, I tell them that if there is an oil tank, when you buy the home, you buy the home and the oil tank problem. 

Over the past 26 years oil tank sweeps, oil tank scans and/or oil tank inspections have become a common part of the home-buying process.

Why perform an oil tank sweep?

Oil tanks belong to a property and if you buy a home with an oil tank you buy all the costs associated with the oil tank, meaning oil tank removal, soil testing and most expensive oil tank remediation. 

The photo below is a remediation of a leaking oil tank.

Oil heat was popular in the Northeastern United States from the 1930s to the mid-1980s, this time frame encompasses a large part of the homes in the Northeast, meaning chances are the home you are looking to purchase utilized oil heat in the past.  Also, homes built before 1930, most likely had oil heat since coal was phased out as soon as a homeowner had a chance to switch, since coal required physical feeding of the furnace several times a day during the heating season. Find out More info on Tank Sweeps. 

What percentage of tank sweeps find prior oil heat?

With over 26 years of experience with oil tanks, we have crunched the numbers and found an average of about 75% of the oil tank sweeps find evidence of prior oil heat.  That number should not be that surprising since natural gas only became popular in the 1970's.

Who pays for a tank sweep?

Buyers typically pay for the oil tank sweep as it is part of their due diligence.  Due diligence is what a reasonable person would do to investigate a property for problems prior to ownership.

Do property owners ever do oil tank sweeps?

Most property owners do not perform tank sweeps as they do not want to find an oil tank.

The photo below shows a tank found by Curren during a GPR scan.   Home built in 1978, sold in 2016, with no oil tank sweep.

 Oil Tank scan with Ground Penetrating Radar (GPR) or metal detector?

You should use both GPR and a metal detector to be thorough when performing an oil tank scan or tank sweep. Rely on GPR the most as it is what commercial sites use, metal detectors are more to prove that the object found by GPR is metallic.  Remember, the best equipment is the most expensive, an $800.00 metal detector on Amazon.com should not be relied upon.

Metal detectors beep if they find iron sand, buried pipes, get too close to a metal fence or a structure with metal, and yes homes have metal, or simply encounter buried metallic trash.   GPR uses a screen so the geophysical technician can see the graphical image detected by the GPR antenna. Larger signals are tanks, and smaller signals are usually pipes.

Do you need a Ground Penetrating Radar/ Tank Scan?  Call Curren Environmental Today.

Are you having health issues, such as being sleepy, irritable, angry, tired, achy, or even joint pain? There is a possibility that it could be airborne mold spores that are making you feel ill, but what if it’s not airborne mold spores?

Curren Environmental fields many calls where the client hasn’t been feeling well has several health symptoms, and has not had any findings as to what is causing these symptoms. Google is a great resource and people find that they may have health issues due to mold growth. People then hire a mold inspector to visually inspect the home and provide air samples of some sort. Air sampling is when a machine is used to capture air in a small capsule, which is sent to the laboratory to look for mold spores. Every house will have some sort of airborne mold spores, no home is completely mold-free.

Once the inspection is complete, you should receive a report detailing what was done during the mold inspection and the interpretation of the lab data. Curren finds many inspectors leave out the interpretation of the lab data, which is pertinent information for the homeowner.

Per the mold inspection report, and the lab data, no visual mold is present and the airborne mold spore lab data shows airborne mold spores below industry standards and complying with typical indoor airborne mold spores – what do you do next?

Some homes accrue large amounts of dust. What is dust? Dust in homes is composed of about 20–50% dead skin cells. So most of the dust is from you, your family, and the animals that share your home with you. If the dust is not cleaned, it can lead to insect growth and a larger problem, health issues. Curren recommends periodically cleaning the interior of your home when mold is not present but dust and dirt are, dust can cause allergies and health issues as well. The CDC says “Maintaining safe cleaning habits helps remove most germs, such as harmful viruses or bacteria, on household surfaces”.

If you have health problems and have exhausted your investigations, it might be time for a deep cleaning.