Contractors Pollution Liability vs. General Liability: What Each Policy Does

The standard exclusion is not total. Common forms keep a few exceptions, described here generally because wording differs by edition and carrier: injury inside a building from smoke or fumes produced by equipment used to heat that building, injury or damage from the heat, smoke or fumes of a hostile fire, and certain escapes of fuel or operating fluids from mobile equipment's own systems at a job site. Some forms also carve back limited indoor fumes from materials a contractor brings into a building for its work.

Each exception is tied to a narrow situation, such as where the release happened or whose equipment was involved. A fuel tank that leaks overnight, a slurry release or sediment leaving the site after a storm usually fits none of them. Many contractor programs go further and attach a total pollution endorsement, which removes most or all of the exceptions and may keep only the hostile fire language. Confirm which version is attached before assuming any carve-back applies.

Some carriers sell an endorsement that gives a slice of pollution back to the GL. Common versions apply only to a release that begins and ends within a short window, is discovered within a set number of hours and is reported within a set number of days, or only to named situations. Many carry a sublimit and exclude gradual seepage. Where the sublimit sits inside the GL aggregate, each pollution payment also reduces the limit left for ordinary injury and property damage claims.

They can help with a small, sudden spill found and reported quickly, but they are a weak fit for grading, drilling, demolition and utility work, where releases are often discovered late, spread underground or involve material the contractor did not own. They also rarely satisfy a contract that names a pollution limit or asks for the owner to be insured on a pollution policy, so ask the owner in writing whether it will accept one before relying on it.

A contractors pollution liability policy starts where the GL exclusion ends. Its insuring agreement is usually written around pollution conditions arising from covered operations, and it may respond to third-party bodily injury and property damage, cleanup costs and defense. Many forms address cleanup a government orders, and some extend to voluntary or emergency cleanup. Endorsements can add transportation, non-owned disposal sites and mold, and many forms may respond when the contractor's work disturbs or spreads contamination that was already in the ground.

Regulators often start the clock. Nevada's spill rule, NAC 445A.347, requires the owner or operator of a facility, or its designated agent, to notify the state no later than the first working day after learning that a hazardous substance has turned up in at least 3 cubic yards of soil during excavation or in groundwater during subsurface work. Federal Superfund liability can reach parties that arranged for disposal or hauled material to a site they chose, and an indemnity cannot shift that liability away, which is one reason owners ask for the policy and not only the indemnity.

The two policies often run on different clocks. The California Department of Insurance describes an occurrence policy as one that answers claims from occurrences during the policy period whenever the claim is filed, and a claims-made policy as one that answers claims filed during the policy period, subject to a retroactive date. Contractor GL is usually occurrence-based, while CPL is sold both ways and often claims-made.

The mismatch shows up years later. A slow leak from a fuel line installed in one year may not be found until a later owner excavates. Under a claims-made CPL, that claim needs a policy in force when it is made, with a retroactive date earlier than the work. Letting the CPL lapse, moving to a carrier that resets the retroactive date or closing the business without an extended reporting period can leave the claim with no pollution policy, while the occurrence GL from the year of the work still carries its exclusion.

Mold often arrives through a water event the GL may address. A roof drain or window leak may produce a property damage claim the GL handles, subject to its terms, while a separate fungi or bacteria exclusion removes the mold remediation and the occupants' related complaints. EPA's guidance calls moisture control the key to mold control and advises drying water-damaged areas and items within 24 to 48 hours, which is why the speed of the response after a leak often shapes the size of the claim.

A CPL form may include mold in its pollution conditions definition, add it by endorsement with a sublimit or separate retention, or exclude it. EPA also notes that some spores are found indoors in ordinary conditions and do not grow without moisture, so claims tend to turn on growth after a water problem. Contractors doing building envelopes, interiors and multifamily work should ask how the CPL treats mold in completed work, not only during construction.

Injury and damage from finished work typically fall in the GL's products-completed operations hazard, but the pollution exclusion still applies there. A leaking sewer lateral, a failed vapor barrier or a fuel system the contractor installed can each produce a pollution claim after turnover that the GL removes. That is the exposure a CPL's completed operations provisions are meant to address.

CPL forms handle it in different ways. Some include completed operations for as long as the policy stays in force and the retroactive date holds. Others state a fixed period after the work ends, and project pollution policies usually name a term and a reporting tail. Ask how long completed work stays inside the policy, whether the owner's additional insured status reaches it and whether that period matches what the contract requires.

A certificate is a summary, and Texas law says so directly. Insurance Code chapter 1811 bars an insurer or agent from issuing a certificate that alters, amends or extends the policy it references, says a certificate conveys no contractual right to the holder and requires certificate forms approved by the Texas Department of Insurance. A certificate listing a GL limit and a CPL limit therefore says nothing about the total pollution endorsement, the CPL retroactive date, the covered operations schedule or a mold sublimit.

When a contract asks for both policies, ask for the documents that show how they meet rather than a second certificate. Each item below answers a question the certificate cannot, and together they show whether the CPL picks up where the GL stops for the specific work the contract describes.

• The GL pollution exclusion or total pollution endorsement attached to the policy
• The CPL declarations with trigger, retroactive date and any extended reporting terms
• The CPL covered operations description, checked against the contract scope
• Mold, transportation and disposal site wording and any sublimits
• Additional insured endorsements and other insurance clauses on both policies