Chemstar, Inc. v. Liberty Mutual Insurance Co.

41 F.3d 429
CourtCourt of Appeals for the Ninth Circuit
DecidedNovember 16, 1994
DocketNos. 93-55555, 93-55557, 93-55558, 93-55560, and 93-55561
StatusPublished
Cited by1 cases

This text of 41 F.3d 429 (Chemstar, Inc. v. Liberty Mutual Insurance Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Ninth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Chemstar, Inc. v. Liberty Mutual Insurance Co., 41 F.3d 429 (9th Cir. 1994).

Opinion

O’SCANNLAIN, Circuit Judge:

We consider unresolved issues of California insurance law to decide what constitutes an “occurrence” under a third-party insur-[431]*431anee contract and when such coverage is triggered among successive policy years.

^

Chemstar, Inc. (“Chemstar”) is a supplier of lime plaster. Its predecessor, Genstar Lime Company (“GLC”)1, manufactured Type S Hydrate lime, which GLC marketed for use as an interior plaster finish in homes, From 1984 to 1986, GLC sold lime containing high amounts of magnesium oxide pellets, which are called “perielase.” During the lime manufacturing process, perielase reacts with water through a process called “hydration” to become magnesium hydroxide, a stable compound. Some perielase may not hydrate during manufacturing but may later react with moisture in the air until it- eventually changes into magnesium hydroxide.

Lime that contains unhydrated perielase is unfit for home interior use. Where such lime is encased in a plastered surface, hydrating perielase may expand and pop through the smooth plaster, causing unsightly pits. Pitting is not inevitable, however, because peri-clase may never expand. Further, because pitting does not weaken plaster structurally, periclase-laden lime is suitable for exterior use.

When GLC sold high-periclase lime from 1984 to 1986, it wrote on bills of lading that the lime was “for exterior use only.” It did not inscribe this warning on bags containing the lime. Consequently, while GLC’s direct purchaser was on notice that high-periclase lime was unsuitable for interior use, subsequent recipients of the lime, who would not have received a GLC bill of lading, did not necessarily receive notice. Given these circumstances, the district court concluded that “it was almost inevitable that some lime with high perielase concentrations would be used indoors.” Chemstar, Inc. v. Liberty Mut. Ins. Co., 797 F.Supp. 1541, 1545 (C.D.Cal. 1992).

Contractors did, in fact, use high-periclase lime in the interiors of homes in southern California, causing plaster pitting in at least 28 of these homes. The 28 homeowners brought claims against GLC and Chemstar between 1985 and 1988.

Chemstar turned to its insurers for indemnity and defense of the homeowners’ claims. The policies allegedly covering these losses were all based on a standard comprehensive general liability policy and contain essentially the same terms. The 1985-86 policy of defendant Liberty Mutual Insurance Co. (“Liberty”) is typical. It states that Liberty:

[will] pay on behalf of the Insured all sums which the insured shall become obligated to pay by reason of the liability imposed on the Insured ... [f]or damages because of ... destruction of tangible property during the policy period ..., caused by an occurrence.

Chemstar filed a complaint asserting a claim against Liberty and other insurers seeking, among other things, a declaration of its rights to coverage. The insurers, in turn, filed various counter- and cross-claims. The district court bifurcated this action into two proceedings, Phases I and II. In Phase II, the shbject of this appeal, the district court allocated among Chemstar’s insurers Chems-tar’s property damage and defense costs.2

On July 23,1992, the district court issued a partial summary judgment order, ruling that all 28 plaster pitting claims arose from one occurrence and had occurred when plaster pitting manifested in the first home. After a later two-day bench trial, the district court found that plaster pitting first manifested [432]*432during the 1985-86 policy year. On March 10, 1993, the district court entered its Phase II Declaratory Judgment Order, incorporating its previous dispositive orders and factual findings.

. Chemstar, Liberty, United Insurance Company (“United”), American Home Assurance Company (“American”) and Employers Insurance of Wausau (“Wausau”) appeal various portions of the district court’s July 23, 1992 summary judgment order.

II

Except as noted below, California law governs this diversity action. Intel Corp. v. Hartford Acc. & Indem. Co., 952 F.2d 1551, 1555 (9th Cir.1991). The panel applies California law as it believes the California Supreme Court would apply it. Id. Although California appellate court decisions are persuasive precedent, the panel is not bound by them if it believes that the California Supreme Court would decide otherwise. Hancock Labs., Inc. v. Admiral Ins. Co., 777 F.2d 520, 525 n. 10 (9th Cir.1985).

The district court allocated pitting damages at all 28 homes to the March 15, 1985— March 15, 1986 policy period. It based this decision on three determinations: (1) plaster pitting at all 28 homes arose from one occurrence; (2) plaster pitting occurred at the time that it first manifested, which was during the March 15, 1985 — March 15, 1986 coverage year; and (3) plaster pitting at all 28 homes constituted one, progressive loss. We examine each of these three determinations.

A

Chemstar’s insurance policies cover property damage arising from an “occurrence.” See Whittaker Corp. v. Allianz Underwriters, Inc., 11 Cal.App.4th 1236, 14 Cal.Rptr.2d 659, 663 (1992). The district court held that the underlying cause of the plaster pitting was GLC’s failure to warn end-users that high-perielase lime was unsuitable for indoor use. Chemstar, 797 F.Supp. at 1547. According to the district court, this failure to warn stemmed from an inadequate quality control system at GLC. Id. at 1545, 1548 n. 12.

Wausau argues that pitting at the 28 homes did not result from a single cause but, instead, arose from a combination of distinct causes. Because plaster pitting was not inevitable in every home in which high-peri-elase lime was installed, Wausau asserts that pitting resulted from circumstances unique to each home rather than an underlying failure to warn.

The district court rejected this argument. Declining to individuate causes of the pitting at each home, it stated that GLC’s:

failure to warn was a continuing cause that was not interrupted by any other cause. As noted before, if GLC had employed an adequate quality control system and warned of the proper uses of its product, the other causes offered by American, Wausau, and United would not have resulted in property damage.

Id.

We agree with the district court that there was no intervening, proximate cause after GLC’s failure to warn. In Mead Reinsurance v. Granite State Insurance Co., 873 F.2d 1185, 1187 (9th Cir.1989), a municipality (the “City”) had been sued in twelve separate section 1983 lawsuits, and the City looked to its primary and excess insurers for indemnity. The City and primary insurer argued that eleven of these twelve suits stemmed from only one occurrence because, in these cases, the City’s liability was premised upon a single police policy condoning excessive police force. Id. at 1187.

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