Interstate Power Company (Interstate), the plaintiff in this declaratory judgment *753 action, appeals from a summary judgment in favor of the defendant Insurance Company of North America (INA) with respect to Interstate’s allegations that INA insured it against liability for environmental cleanup costs at several locations. After reviewing the record and considering the arguments presented, we affirm the judgment in part, reverse it in part, and remand the case to the district court for further proceedings.
The environmental damage that precipitated the present litigation occurred at nine sites owned or formerly owned by Interstate. Manufactured gas had been produced on these sites by Interstate, its predecessors in interest, or third parties. These sites are located in Clinton, Iowa; Mason City, Iowa; Galena, Illinois; Savanna, Illinois; Albert Lea, Minnesota; Austin, Minnesota; New Ulm, Minnesota; Owatonna, Minnesota; and Rochester, Minnesota. A chronology of the operations at these locations is listed below:
Date Location Opening, Closing, Decommissioning
1856 Galena Plant Opened
1889 Clinton Plant Opened
1888 Rochester Plant Opened
1902 Owatonna Plant Opened
1904 Albert Lea Plant Opened
Mason City Plant Opened
1906 Austin Plant Opened
1907 Savanna Plant Opened
1914 New Ulm Plant Opened
1932 Rochester Plant Closed
1933 Albert Lea Plant Closed
1935 Rochester Plant Decommissioned
Austin Plant Closed
1936 Owatonna Plant Closed
1939 New Ulm Plant Closed
1945 Galena Plant Closed
1946 Galena Plant Decommissioned
New Ulm Plant Decommissioned
1950 Owatonna Plant Decommissioned
Austin Plant Decommissioned
Albert Lea Plant Decommissioned
1951 Savanna Plant Closed
1952 Clinton Plant Closed
Mason City Plant Closed
Mason City Plant Decommissioned
1957 Clinton Plant Decommissioned
During the period from May 1, 1946, until May 1, 1964, INA provided general comprehensive liability insurance to Interstate. Interstate is claiming under the provisions of that insurance coverage relating to “property damage.” It urges that such coverage extends to'the liability imposed upon it by state and federal agencies for environmental cleanup costs at the sites that we have described.
■ During the years from May 1, 1946, to May 1, 1961, the INA policy provided that liability for property damage extended to “damages because of injury to or destruction of property including the loss of use thereof, caused by accident.” In contrast, personal injury coverage under the policy during this period was provided on an “occurrence” basis. Interstate concedes that, in order for INA’s liability policy to be triggered for the 1946-1961 period, it must establish that the environmental contamination that it is required to remediate was the result of accident.
In ruling on INA’s summary judgment motion, the district court concluded that it was undisputed in the motion papers that the contamination at issue occurred as a result of coal tar, coke, and other residues from the manufacturing process being allowed to accumulate on the unprotected earth, and thereafter be dissolved by rain, melting snow, or other sources of moisture. This process occurred over a period of decades. The court concluded from these circumstances that the environmental damages at issue here were the result of natural causes rather than being accidental. Although evidence was presented that some fuel spills may have occasionally occurred on these properties, Interstate no longer asserts that such spilling, accidental or otherwise, constitutes an accident or accidents triggering liability coverage under the INA policy. Rather, Interstate contends that the exposure of the coal tar, coke, and other residual solids from the manufacturing operations to natural precipitation is the defining event that constitutes an “accident” for purposes of INA’s policy. Other facts which bear upon our decision will be considered in our discussion of the legal issues presented.
I. Whether the Alleged Property Damage was Caused by Accident.
In seeking to overturn the ruling of the district court on the policies in effect *754 for the years 1946 to 1961, Interstate asserts that the district court improperly focused on whether there had been a causative event during the policy period that qualified as an accident. It argues that based on the language of the policy any accidental property damage during the policy period triggered coverage regardless of when and how the subsequent contamination took place. This assertion is designed to controvert temporal considerations contained in the district court’s ruling. We believe, however, that it is not necessary to decide the motion for summary judgment based on temporal considerations. What happened here simply does not constitute an accident at any point in time.
The controlling consideration in interpreting insurance policies is the intent of the parties.
Iowa Comprehensive Petroleum Underground Storage Tank Fund Bd. v. Farmland Mut. Ins. Co.,
The critical policy language in the present case provides:
I. Coverage.
The company hereby agrees to indemnify the insured [against]....
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(b) Property Damage Liability.
For damages because of injury to or destruction of property, including the loss thereof, caused by accident.
(Emphasis added.) The policy language clearly focuses on the cause of the damage rather than the damage itself and requires that the cause be of accidental origin. In
Dico, Inc. v. Employers Insurance of Wausau,
II. Whether the District Court Correctly Granted Summary Judgment for the 1961-64 Policy Years.
The district court also granted summary judgment for INA for the policy years between May 1, 1961, and May 1, 1964. We agree with Interstate that this was a gratuitous act on the part of the court because INA’s summary judgment motion only extended to matters relating to the policies in effect between 1941 and 1961. Ordinarily this would be ground for reversing that portion of the court’s ruling without further discussion.
See Prouty v. Clayton County,
Unlike the earlier policy years where liability insurance for property damage was limited to damage caused by accident, *755 the policy in effect from May 1, 1961, to May 1,1964, provided:
With respect to Coverage 1(b) [Property Damage Liability], “occurrence” means either an accident happening during the policy period or a continuous or repeated exposure to conditions which unexpectedly and unintentionally causes injury to or destruction of property during the policy period. All damages arising out of such exposure to substantially the same general conditions shall be considered as arising out of one occurrence.
(Emphasis added.) The district court denied coverage under this clause on the grounds that (1) no occurrence under the policy definition occurred during the period from May 1, 1961, to May 1, 1964; and (2) Interstate failed to establish that the injury was unexpected and unintentional. We disagree with both of these conclusions.
The court’s ruling that no occurrence, as defined in the policy, occurred during the time the policies were in force was premised on two factors. First, the coal tar and other solid residues that were the basis of the contamination had been placed on or in the ground many years before these insurance policies went into effect. Second, the court viewed Interstate’s response to INA’s defense of untimely notice as a concession that the occurrence on which it was relying to establish coverage occurred at a time after these policies ceased to be in force. To summarize, the district court ruled that any actual occurrence with respect to the damage that occurred was prior to the policy period and that the occurrence relied on by Interstate was after the policy period.
Occurrence is defined so as to include any injury to or destruction of property that unexpectedly and unintentionally occurs during the policy period as a result of a repeated exposure to conditions. The “repeated exposure to conditions” element of the definition is stated as an alternative to the “accident” element. 1 There is nothing in the policy language that requires the repeated exposure to conditions to have occurred during the time that Interstate was operating the manufacturing plants. All that is necessary is that the repeated exposure to conditions cause some damage during the policy period. And this is amplified by the additional language providing “[a]ll damages arising out of such exposure to substantially the same general conditions shall be considered as arising out of one occurrence.”
In
Weber v. IMT Insurance Co.,
Our view of this matter is not diminished by the contents of Interstate’s response to INA’s defense based on untimely notice. Although it alludes in that response to occurrences antedating the policy period, these statements were intended to identify those occurrences that alerted it to the need for providing notice to the insurance company. As will be discussed further in the following division of this opinion, those occurrences involved an entirely different set of circumstances than the occurrence or occurrences that trigger liability coverage for property damage.
We also must reject the district court’s conclusion that summary judgment was properly granted because Interstate failed to show that the injury or damage at issue here was unexpected and unintended. In viewing the summary judgment motion papers, it is clear that it was not then-burden to negate the policy provision requiring unexpected and unintended injury. To obtain a grant of summary judgment on some issue in an action, the moving party must affirmatively establish the existence of undisputed facts entitling that party to a particular result under controlling law.
Griglione v. Martin,
This is not a situation analogous to the intentional-act exclusion cases that are relied on by INA. These cases,
Allied Mutual Insurance Co. v. Costello,
III. Whether the Insurance Coverage Is Abrogated Because of Untimely Notice to the Insurer.
INA urges that, in the event the district court’s grant of summary judgment is not upheld in its entirety, it is nonetheless entitled to summary judgment with respect to. the claims involving the Mason City, Clinton, Rochester, and Albert Lea sites. This contention is based on its attempt to secure summary judgment based on a lack of timely notice to it from Interstate concerning these claims.
It is established that a successful party in the district court may, without appealing, save the judgment in whole or in part based on grounds urged in the district court but not included in that court’s ruling.
Moyer v. City of Des Moines,
In seeking summary judgment on claims arising from the four sites in question, INA relies strongly on our decision in
Fireman’s Fund Insurance Co. v. ACC Chemical Co.,
The delay in giving notice to the insurer in
Fireman’s Fund
was five years. We held that this was not substantial compliance with the notice requirements of the policy and was prejudicial as a matter of law.
Fireman’s Fund,
The notice requirement in the present policy differs substantially from that contained in Fireman’s Fund and the cases discussed therein. In those cases, the policies required prompt notice of an occurrence giving rise to the liability of the insured. In the present case, the policy requires prompt notice of an occurrence “reasonably likely to involve liability on the part of the [insurer].” This language must be applied within the context of INA’s liability as an excess insurer over and above the limits of Interstate’s primary liability insurance coverage.
In
Canadyne-Georgia Corp. v. Continental Insurance Co.,
Sometime in 1987 Interstate gained possession of a report of potential environmental problems from waste disposal at manufactured gas plants. A portion of this report identified the Mason City, Clinton, Albert Lea, and Rochester sites at issue here as being potentially contaminated. In September 1989 data obtained by Interstate at the Midwest Gas Association’s Hazardous Waste Management Conference indicated:
Cleanup of [manufactured gas sites (“MGS”) ] is now an EPA/state priority and represents a great cost threat to gas utilities. A single MGS cleanup may cost upwards of several million dollars per site, with costs dependent on such factors as waste migration, whether EPA or state EPA directs the cleanup, and the choice of remedy....
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The “lesson” of the 1986 scoring package is that EPA will list MGS and gas utilities will face Superfund liability. While gas utilities may, like any responsible party, file comments disputing EPA’s HRS, the track record for removing sites from the NPL is far below 1%. Such facts underscore the need for utili *758 ties to aggressively respond to MGS problems by seeking to take on the lead role in cleaning up MGS rather than waiting for the EPA response.
Interstate’s 1990 annual report to shareholders indicated that:
Old manufactured coal gas plants that operated in the late 1800s and the early part of this century are just now being identified as hazardous sites. These plants were dismantled decades ago and some were owned by Interstate, or by companies that Interstate acquired. We have identified eight such sites in the Midwest. Currently, we are working with the Environmental Protection Agency to clean up a site in Mason City, Iowa. We will proceed with investigations of all the sites to determine what, if any, action needs to be taken to protect our environment.
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Early this century, various utilities including Interstate operated manufactured gas plants which used coal and/or oil to produce fuel for cooking and lighting. These facilities were abandoned or sold approximately a half-century ago when natural gas pipelines were extended into the upper Midwest. The former coal gasification sites are now believed to present a potential environmental hazard.
It is expected that the costs of compliance relating to the above issues will be recovered through the rate-making process. If compliance costs are not recovered, the Company’s results of operations and financial position could be adversely affected.
At this time, Interstate’s current management had no retained records concerning the company’s liability insurance policies for the period between 1946 and 1964. In September 1990 it hired a consultant to research this matter. In October 1990 that consultant advised Interstate of the INA excess policies at issue in this case. Interstate did not notify INA of its potential liability for the environmental damages at the Mason City, Clinton, Albert Lea, and Rochester sites until April 1994.
When the present action was commenced in June 1995, Interstate alleged that as of the second quarter of 1994 it had incurred liability and expenses for the contamination of $2,926,700 at the Mason City site; $6,161,238 at the Rochester site; and $613,423 at the Albert Lea site. Documents in the record indicate that Interstate’s underlying liability insurance protection (beneath the INA umbrella) was $50,000 per occurrence during the period from 1961 to 1964.
Given the gross disparity between the costs incurred at the Mason City, Rochester, and Albert Lea sites and other available liability insurance and, based on Interstate’s prior knowledge of its potential liability for substantial cleanup costs, we are convinced that the notice given to INA was unreasonably tardy. It was sufficiently tardy to establish the presumption of prejudice applied in the Fireman’s Fund case and precludes Interstate from availing itself of the coverage afforded by the INA umbrella for environmental damages at these three sites. There is nothing in the record to support a similar conclusion at the Clinton site.
We have considered all issues presented and conclude that the district court’s ruling on the motion for summary judgment for the policy years between 1946 and May 1, 1961, is affirmed. The court’s ruling on the policy years between May 1, 1961, and May 1, 1964, is affirmed as to INA’s liability at the Mason City, Rochester, and Albert Lea sites and otherwise reversed. The case is remanded to the district court for further proceedings. Costs on appeal are assessed thirty percent to INA and seventy percent to Interstate.
AFFIRMED IN PART, REVERSED IN PART, AND REMANDED.
Notes
. In this respect, the present policy differs from the policy considered by this court in Vico,
Inc.,
