OPINION AND ORDER
This dispute marks one more chapter in the long running — and constantly evolving — battle over the clean-up of the Centerdale Manor Superfund Site (the “Site”) in North Providence, Rhode Island. This chapter involves a kind of spillover fight among two insurers who were previously allied in the defense of an action brought by Emhart Industries, Inc. (“Emhart”), the company responsible for the clean-up.
I. Background
After being ordered by the Environmental Protection Agency (“EPA”) to take remedial actions to repair damage to the Site in North Providence, Rhode Island, Em-hart
On June 29, 2009, Century brought the present action seeking equitable contribution from Liberty Mutual for the payment of Emhart’s defense costs. Liberty Mutual counterclaimed seeking a declaration that it (1) had no duty to defend Emhart and (2) has no obligation to contribute equitably to Emhart’s defense, or, in the alternative, that any such obligation was satisfied through its settlement with Em-hart. On April 27, 2010, this Court held that Liberty Mutual owed Emhart a duty to defend, but granted Liberty Mutual a limited period to conduct discovery on “(i) what, if any, settlement offers Emhart made to Century in connection with the claims at issue in the Emhart lawsuit, and how Century responded; and (ii) whether any other insurers owed Emhart a duty to defend the EPA action.” Century Indem.
Discovery has now closed. In a new round of submissions on Century’s motion for summary judgment (ECF No. 7) and Liberty Mutual’s cross-motion for summary judgment (ECF No. 34), the parties no longer contest the two issues on which this Court had ordered additional discovery. Liberty Mutual does not argue that Century failed to mitigate its damages by rejecting reasonable settlement offers from Emhart or that other insurers may have owed Emhart a duty to defend. Rather, the dispute has now shifted to the amount of equitable contribution Liberty Mutual owes to Century. This question implicates two difficult and important issues regarding risk allocation among insurers, particularly in large-scale environmental claims like this one: first, the effect of Liberty Mutual’s settlement with Emhart on the amount of equitable contribution it owes Century;
II. Discussion
A. The Settlement between Liberty Mutual and Emhart
Liberty Mutual argues that its duty to defend Emhart terminated as of their March 24, 2005 settlement and that the Court should not require it to contribute to Emhart’s defense costs after that date. Century disputes this claim on several grounds.
First, Century claims that the Court has already rejected Liberty Mutual’s settlement argument, pointing to the following excerpts from the Court’s April 27, 2010 Opinion and Order:
[T]he parties agree that Liberty Mutual’s settlement with Emhart is not relevant to the scope of its duty to defend the company.
In terms of timing, the duty to defend takes effect when a complaint “reasonably susceptible” to coverage is filed, and continues until the insurer obtains a judgment that there is no coverage. In this case, those dates begin when the EPA issued its charges (starting in February 2000), and end when the jury delivered its verdict in the Emhart trial (October 19, 2006).
Century Indem.,
On the merits, Liberty Mutual asserts that, because the right to equitable contribution exists to prevent coinsurers from paying more than their “fair share of a common burden,” its “common burden” existed only during the period that both it and Century shared a duty to defend Em-hart (i.e., prior to settlement). Thomas,
Century points to several cases holding that an insurer’s settlement with the insured does not extinguish the right of other coinsurers to obtain equitable contribution from the settling insurer. See, e.g., Maryland Cas. Co. v. W.R. Grace & Co.,
The few courts and commentators to have pondered the issue have roundly rejected Liberty Mutual’s proposed bright line rule that “one insurer’s settlement with the insured is [always] a bar to a separate action against that insurer by the other insurer or insurers for equitable contribution or indemnity.” Clarendon Am. Ins. Co. v. Mt. Hawley Ins. Co.,
Courts have also rejected Liberty Mutual’s contention that a finding against it would categorically undermine public policy by encouraging litigation in lieu of settlement. See Certain Underwriters,
There is nothing about the settlement here that would appear to advance the public policy goals discussed in the authorities. True, Liberty Mutual settled early in the case while Century litigated its duty to defend and indemnify Emhart all the way to the First Circuit. Yet, the $250,000 settlement between Liberty Mutual and Emhart was but a slice of a confidential global settlement, involving many different matters. As it was reached after Emhart had already incurred approximately $2 million in defense costs, it seems unlikely that Emhart would have agreed to such a discounted sum, absent terms more favorable to it elsewhere in the global settlement agreement. Moreover, and quite tellingly, the' settlement neither required Emhart to release any claims against Century nor obligated it to indemnify Liberty Mutual in the event Century sought contribution from Liberty Mutual. What this reveals is an understanding that Emhart would no doubt seek recovery from Century; that Century could be saddled with the risk and expense of litigating with Emhart; and that Liberty Mutual could sit back and preserve these arguments until now. This tactical ploy made sense from Liberty Mutual’s point of view, but it has done nothing to promote the policy objectives touted by Liberty Mutual now. Moreover, Liberty Mutual’s approach virtually ensured that no settlement would occur between Em-hart and Century. Indeed, confirmation of this is that, after an opportunity for discovery on this issue, Liberty Mutual apparently found no evidence that Century unreasonably failed to settle with Emhart. To reward Liberty Mutual for its settlement with Emhart would do nothing to serve Rhode Island’s public policy of “encourage[ing] the settlement of controversies in lieu of litigation.” Skaling,
Moreover, equity requires the Court to “prevent one of two or more guarantors from being obliged to pay more than his or her fair share of a common burden, or to prevent one guarantor from being unjustly enriched at the expense of another.” Thomas,
B. Whether Interest Is Appropriate
Liberty Mutual also argues that it did not share a common burden with Century to pay pre- and post-judgment interest. This argument is derivative of Liberty Mutual’s argument regarding the effect of its settlement (which the Court has held had no effect on its duty to defend Emhart), and the issue requires no further independent analysis. Liberty Mutual is responsible for pre- and post-judgment interest pursuant to R.I. Gen. Laws § 9-21-10.
C. The Proper Method of Allocation
The Court now turns to the stickier wicket of how to equitably apportion defense costs between the parties. Liberty Mutual argues that Emhart’s defense costs should be divided equally between the two coinsurers (the “equal shares” method). Under this method, each party would bear half of Emhart’s $6,317,290.11 defense bill, resulting in Liberty Mutual owing Century $3,158,645.06, less the $250,000 settlement that Century has agreed to discount Liberty Mutual. (See Century’s Mem. in Supp. of Mot. for Summ. J. 15, ECF No. 7.) Century argues that the costs should be divided according to the length of time each coinsurer’s policy overlapped with the period of the risk (the “time on the risk” method).
Rhode Island authorities offer limited guidance on choosing a method to allocate equitable contribution where, as here, two successive coinsurers shared the same duty to defend an insured for the same risk. The Rhode Island Supreme Court has found it “proper to prorate defense costs between concurrent insurers, when ... both insurers have wrongfully refused to defend an insured.” Peloso v. Imperatore,
The public policy considerations regarding insuring progressive injuries provide a good starting point and an appropriate backdrop for the present analysis. Unlike
Given the complexities involved in allocating liability for a progressive injury between successive coinsurers, courts have adopted various approaches for allocating indemnity and defense costs between insurers and insureds or between insurers themselves. See, e.g., EnergyNorth,
This lack of consensus as to how to allocate progressive injury liability has led to a “litigation bonanza for lawyers.” William R. Hickman & Mary R. DeYoung, Allocation of Environmental Cleanup Liability Between Successive Insurers, 17 N. Ky. L.Rev. 291, 294 n. 6 (1990). Insurers have an incentive to renounce indemnification and defense duties in the hope that courts will adopt a more favorable allocation method. The fractured state of the law also decreases settlement incentives,
1. Other Insurance Clauses
Liberty Mutual argues that allocation based on equal shares is supported by the terms of the parties’ respective policies. Specifically, the parties “other insurance” clauses identically state that where other insurers’ policies “apply to the loss on the same basis” and “provide! ] for contribution by equal shares,” then such coinsurers “shall not be liable for a greater proportion of such loss than would be payable if each insurer contributes an equal share .... ” (Liberty Mut.’s Statement of Undisputed Facts ¶ 26, ECF No. 38-5 [SEALED].) In other words, where two policies cover the same loss and provide for equal shares allocation, then loss shall be allocated on that basis. Although these clauses pertain to indemnification, Liberty Mutual argues that the parties’ other insurance clauses should be taken into consideration in choosing an equitable allocation method for defense costs. See Fed. Ins. Co. v. Cablevision Sys. Dev. Co.,
Liberty Mutual’s plaint falls short. The other insurance clauses function to prevent double recovery where two or more insurers concurrently cover the same risk; they are inapposite to the issue of how to allocate defense costs between successive coinsurers. See Pacitti v. Nationwide Mut. Ins. Co., C.A. No. 89-1999,
2. Equal Shares v. Time on the Risk
Turning first to the equal shares allocation method, the courts that have adopted it have usually relied on the reasoning that an insurer’s “duty to defend is broader than the duty to indemnify.” Mellow v. Med. Malpractice Joint Underwriting Ass’n of R.I.,
The time on the risk method, alternatively, was specifically “developed as a solution for the problem of toxic torts and industrial diseases, where damage — and liability — may be found to span the term of several policies of insurance.” Taco Bell Corp. v. Cont’l Cas. Co., No. 01 C 0438,
In Forty-Eight Insulations, the Sixth Circuit held that, as “indemnity costs can be allocated by the number of years [of exposure][,]” then “[t]here is no reason why this same theory should not apply to defense costs.”
By corresponding insurers’ defense cost obligations to their policy periods, courts have found that time on the risk serves to align insurers’ defense cost expectations with the proportion of risk that they assume based on the duration of their policy. See Forty-Eight Insulations,
Thus, by providing insurers with a measure of future risk, time on the risk reduces underwriting uncertainty. As one commentator has explained (in the context of indemnification):
In addition to decreasing the amount of litigation, [the time-on-the-risk] method provides a way for insurance companies to estimate more accurately total expected liability; as a result, premiums should decline. Premiums reflect the uncertainty that exists in the insurance market and the possibility that courts will use a coverage maximization rule to allocate coverage. Uncertainty about which allocation method will be used and how that method will be applied increas*519 es the costs of insurance. Consistent use of the time-on-the-risk method will eliminate the concern about uncertainty. Because this method ... does not rely on a case-by-case determination of how much coverage was purchased, it also obviates the concern about inconsistent application.
Doherty, supra, at 282-83. It would be too far a stretch to say that consistent use of the time on the risk method would completely eliminate uncertainty at the underwriting stage. Of course, even time on the risk is dependent upon the number of other coinsurers covering the relevant policyholder’s risk. However, where policies are issued on an annual basis, as here, it is more predictable in the sense that underwriters know that longer general liability policy coverage periods will always mean larger defense burdens. This result does not follow from equal shares allocation or allocation methods that take policy limits into account. Unlike equal shares, time on the risk does not require underwriters to calculate premiums by relying exclusively on guesswork as to the number of other coinsurers who could potentially cover the insured over the life of a long-term injury (or speculate as to their respective policy limits — as an allocation based on limits would require).
Moreover, the Court cannot ignore the disparity between the duration of the parties’ coverage. See USF Ins., 452 F.Supp.2d at 1004 (rejecting equal shares contribution allocation in favor of time on the risk because one coinsurer covered insured for only three months while two others provided coverage for twelve months); Owners Ins.,
On the facts before us, we have no difficulty concluding that in this particular ease, the time on the risk method was more equitable than the equal shares approach. U.S. Fire was responsible for insuring Lincoln for a period of less than six months between January 19, 1982, through July 1, 1982, only a small fraction of the total insurance coverage period of four and one-half years provided to Lincoln by Centennial, Travelers and U.S. Fire together. In order to adopt the equal shares method of allocation advanced by Centennial, the trial court would have been required simply to ignore the relative length of time each of the several insurers was actually responsible for insuring the acts of Lincoln and was receiving insurance premiums for bearing that risk. Had*520 the trial court applied an equal shares allocation, U.S. Fire would have had exactly the same liability for defense costs as Centennial and Travelers, even though the latter two insurers had covered Lincoln for nearly 90 percent of the duration of the combined policy period and had also collected premiums for that longer period of coverage accordingly. Such a result would have been patently arbitrary and inequitable.
Centennial Ins.,
Here, Century was on the risk for approximately 13% of the total length of coverage provided by the two parties. Where neither party undertook a duty to defend Emhart, the Court cannot agree that equity should require Century to shoulder 50% of Emhart’s defense burden-especially considering that Liberty Mutual insured Emhart for substantially higher policy limits and collected more premiums than Century.
Finally, the Court is satisfied that time on the risk allocation is compatible with Rhode Island Supreme Court precedent. In Peloso v. Imperatore, the insured brought suit for reimbursement of defense costs from two coinsurers who covered the same risk for the same amount of time. The Court allocated defense costs pro rata by policy limits, reasoning that a failure to prorate would advance a rule in which an insurer who abdicates its “duty to defend would be awarded a bonus for having done so, by having another company bear the entire cost.”
III. Conclusion
For all of these reasons, Century’s motion for summary judgment is GRANTED and Liberty Mutual’s cross-motion for summary judgment is DENIED. The Court will allocate equitable contribution for Emhart’s defense costs based on the parties’ respective time on the risk, as computed by Century, and Century shall recover from Liberty Mutual 86.87% of the $6,067,290.11
IT IS SO ORDERED.
Notes
. In a prior decision in Emhart Industries, Inc. v. Home Insurance Co., this Court provided a brief history of the beginnings of Em-hart’s legal involvement at the Site:
[T]he EPA sent Emhart a Notice of Potential Liability (the “PRP Letter”) on February 28, 2000. The PRP Letter informed Emhart that, under CERCLA § 107(a), it was a potentially responsible party ("PRP”) based on its status as "a successor to the liability of a chemical company which operated at the Site.” The PRP Letter also invited Emhart to participate in the clean-up activities at the Site.[] Shortly thereafter, on April 12, 2000, the EPA issued a Unilateral Administrative Order for Removal Action (the "First Administrative Order”), which identified certain time-critical removal actions that Emhart was required to undertake! ] Among other things, the First Administrative Order made a finding of fact that ”[h]azardous substances [i.e., dioxin] were disposed of at the Site as part of the former operations of several chemical companies,” and observed that "Emhart is ... a successor to liability of several chemical companies which operated at the Site from approximately 1943 to approximately 1971.”
. For the purposes of summary judgment, Liberty Mutual concedes that "the law permits Century to seek equitable contribution for any amount that it has paid in excess of its proportionate share.” (Liberty Mutual's Mem. in Opp’n to Century’s Mot. for Summ. J. 10, ECF. No. 38-4 [SEALED].)
. The parties agree that Rhode Island law governs. Equitable principles are controlled by the laws of the forum state, here, Rhode Island, Thomas v. Jacobs,
. Century also draws attention to the fact that, in this situation, courts sometimes apportion costs based on the time and limits on the risk method, which is a modified version of the time on the risk method that takes into account policy limits. Under this allocation method, Liberty Mutual would owe Century more than under the time on the risk method, given that its policies were not only in effect longer but also had greater limits. However, because Century argues that time on the risk is “the most equitable of the three approaches” (Century’s Mem. in Supp. of Mot. for Summ. J. 15, ECF No. 7), there is no reason to consider the time and limits on the risk method.
. "[UJncertainty as to outcome is the key to the settlement rate.... This uncertainty leads each party to overestimate its chance of prevailing.” Cybor Corp. v. FAS Techs., Inc.,
. Addressing transaction costs, Liberty Mutual relies on Wooddale Builders, Inc. v. Maryland Casualty Co., in which the Minnesota Supreme Court adopted the equal shares method, reasoning that ”[i]f insurers know from the beginning that defense costs will be apportioned equally among insurers whose policies are triggered, the possibilities for delay will be minimized because no insurer will benefit from delaying or refusing to undertake a defense.”
. This is the amount that was provided to the Court by Century in its Statement of Undisputed Facts, and it includes both pre- and post-judgment interest.
. Century bases its calculation on the assumption that the parties collectively insured Em-hart for ninety-nine months, Century for thirteen months and Liberty Mutual for eighty-six months, and by computing each insurer’s pro
The Court notes, however, that Liberty Mutual’s undisputed fact ¶ 25, which Century indeed does not dispute, suggests that Liberty Mutual provided coverage to Emhart for ninety-six (rather than eighty-six) months. (See Liberty Mut.'s Statement of Undisputed Facts ¶ 25, ECF No. 38-5 [SEALED] ("Liberty Mutual issued certain comprehensive primary and excess general liability policies to Em-hart’s corporate predecessor, United Shoe Machinery Corporation, from November 1, 1971 through November 1, 1979.”); see also Century’s Statement of Disputed Facts ¶ 25, ECF No. 46-3 [SEALED].) The Court will not second-guess Century’s calculation as it appears to be the most conservative and favors the non-prevailing party; however, Century is granted leave to file a motion to amend the judgment if its computations resulted from a clerical error.
