Appellant Atlantic Track & Turnout Company (“Atlantic”) brought this breach of contract action pursuant to the Uniform Commercial Code (“Code”), Mass.Gen.L. ch. 106, § 2-101, et seq. (1992). Atlantic alleged that appellee Perini Corporation (“Perini”) failed to perform under a contract for the purchase and sale of railroad materials.
The court deferred decision on cross motions for summary judgment and ordered a trial limited to two issues: (1) whether the contract was ambiguous; and (2) whether trade usage would supplement the contract terms to enable Atlantic to maintain its action. After Atlantic’s proffer, the court entered a judgment on partial findings pursuant to Fed.R.Civ.P. 52(c) 1 in favor of Perini. We affirm that judgment.
BACKGROUND
On October 21, 1987, the Massachusetts Bay Transportation Authority (“MBTA”) awarded Perini the Eastern Route Track Rehabilitation Project. The project required Perini to rehabilitate a thirteen mile section of double track. The rehabilitation included undercutting the track to replace the ballast, the track’s stone foundation, and disposing of any contaminated ballast materials.
In the spring of 1988, a sub-contractor tested the ballast under the track and determined that it was all contaminated. Perini received the test results on June 21, 1988 and discussed them with the MBTA on July 17, 1988.
In early June, 1988, Perini solicited an offer from Atlantic to buy certain salvage from the project. Between June 28 and 30, 1988, Atlantic issued five purchase orders for “all available” materials. The orders *543 also furnished an estimate of the amount of salvage that would become available.
On August 18, 1988, the MBTA directed Perini to suspend undercutting operations until further notice. On September 13, 1988, the MBTA permanently halted all undercutting due to fiscal constraints. As the elimination of the undercutting reduced the value of the contract by 52%, Perini stopped all work. By October 26, Perini had no physical presence on the project site.
On October 31, 1988, Perini proposed an equitable adjustment of the MBTA contract. The proposal entailed an increase in payment for completion of the remaining work under the contract. The MBTA rejected Perini’s proposal. Perini and the MBTA thus agreed to terminate the contract.
Atlantic knew by August 22, 1988 that all undercutting was suspended and later asked Perini when the remainder of the materials would be available. Perini replied that the MBTA might terminate the project and that Perini had already shipped “all available”- salvage in accordance with the purchase orders. 2 Atlantic sued Perini, claiming that the amount of materials shipped was well below the stated estimates.
LEGAL ANALYSIS
Two reasonable interpretations of the contract’s plain language exist. On one hand, “all available”' implies that Perini satisfied its obligation under the contract by supplying the salvage material that became available; if no material became available to Perini, Perini faced no liability under the contract. 3 On the other hand, the estimates offered in the purchase orders suggest that Perini had to deliver a quantity nearing those estimates.
To convince the court that the latter interpretation represented the true agreement, Atlantic had to overcome two hurdles. First, as the plaintiff, Atlantic had the burden of proving its interpretation by a preponderance of the evidence. Second, any ambiguity in the contract should normally be interpreted against Atlantic, the drafter of the purchase orders.
LFC Lessors, Inc. v. Pacific Sewer Maintenance,
Atlantic offered two theories beyond the plain language of the contract supporting its interpretation of the terms. Specifically, Atlantic argued that: (1) trade usage of the term “all available” required Perini to deliver close to the estimated quantity of materials, and (2) § 2-306 of the Code expressly required Perini to provide a quantity approximating its stated estimate. In addition, Atlantic argued that Perini acted in bad faith. Atlantic revives these theories in this appeal, and we address them in turn. '
I. Trade Usage
The district court ruled that Atlantic’s trade usage proffer failed to prove by a preponderance of the evidence that the contract terms embodied Atlantic’s proposed meaning. As this conclusion constitutes a factual finding, Mass.Gen.L. ch. 106, § 1-205(2), we review it only for clear error,
Athas v. United States,
Trade usage will supplement the terms of a contract only when the parties know or should know of that usage. Mass. Gen.L. ch. 106, § 1-205(3). In the present case, Atlantic provided no evidence that Perini knew or should have known of Atlantic’s interpretation of the term “all aváilable.” There was no evidence that Perini engaged in the same trade as Atlantic. Indeed, one Atlantic witness testified that Perini was not a competitor of Atlantic’s. Transcript, Non-Jury Trial Proceedings— Day 1, at 106. Therefore, we cannot assume knowledge of Atlantic’s trade practices. Furthermore, another Atlantic witness testified that he discussed the terms of the contract with a Perini representative, but *544 never explained the alleged trade usage of “all available.” Id. at 70. Given the lack of evidence, we cannot find that the district court clearly erred in finding that the proposed trade usage of the term did not supplement the contract terms.
II. Section 2-306
Both parties agree that the disputed contract constitutes an output contract governed by § 2-306 of the Code. Section 2-306 of the Code provides in relevant part:
(1) A term which measures the quantity by the output of the seller ... means such actual output ... as may occur in good faith, except that no quantity unreasonably disproportionate to any stated estimate ... may be tendered or demanded.
In the present case, the contract provided an estimate of the expected output, and Perini tendered only 15% of that quantity. Thus, Atlantic argues that according to § 2-306, Perini violated the contract.
While many courts and commentators have discussed the meaning of the “unreasonably disproportionate” clause of § 2-306 as applied to requirements contracts, little has been written on the clause’s application to output contracts. We review the former analysis, however, because it provides valuable instruction due to the similarity between these two types of contracts.
With respect to requirements contracts, courts differ on the meaning of the “unreasonably disproportionate” clause. Some courts find that “even where one party acts with complete good faith, the section limits the other party’s risk in accordance with the reasonable expectations of the parties.”
Orange Rockland v. Amerada Hess,
The Seventh Circuit explained the argument well,
Empire Gas Corp.,
Moreover, an obligation to buy approximately a stated estimate of goods would pose a significant burden on buyers as it would force them to make inefficient business judgments, when the point of entering a requirements contract was to engage *545 suppliers without binding themselves to buy more goods than they need. Essentially, a requirements contract represents a risk allocation. “The seller assumes the risk of a change in the buyer’s business that makes continuation ... costly, but the buyer assumes the risk of a less urgent change in [] circumstances.” Id. at 1340.
The same rationale supports different treatment of cases such as the present one, in which the seller in an output contract tenders less than a stated estimate, from cases in which the seller tenders more.
See
John C. Weistart,
Requirements and Output Contracts: Quantity
Variations,
under the UCC,
1973 Duke L.J. 599, 638-39 (1973). If a seller saw an opportunity'to increase his profits by buying additional goods to resell as output to the buyer, this exploitation might not conclusively establish bad faith. The proviso would forbid such conduct.
See Empire Gas Corp.,
Like the risk allocation in the requirements contract, the output contract allocates to the buyer the risk of a change in the seller’s business ■ that makes continuation costly, while the seller assumes the risk of a less urgent change in circumstances. Indeed, pre-Code Massachusetts courts held that output contracts necessarily contemplated that the level of production would be governed by business judgment.
See Neofotistos v. Harvard Brewing Co.,
Adopting this interpretation of § 2-306, our next, and only inquiry under this section, is whether Perini acted in good faith.
III. Good faith
The district court determined that Perini acted in good faith. This was a factual determination that we review only for clear error.
Athas,
Atlantic offers two indications of bad faith by Perini. First, Atlantic argues that Perini acted in bad faith by failing to notify Atlantic of the June 21 test results. However, Atlantic offered no evidence that the additional contaminated ballast signified to Perini that the contract would end. Indeed, the record indicates that the additional contamination was good news to Per-ini because the more contamination that existed, the more money Perini stood to earn under the contract. The MBTA did not notify Perini of its desire to end the contract until August 18 when it suspended the undercutting; .Atlantic learned of the suspension just four days later. Thus, the court did not clearly err in finding that Perini acted in good faith with respect to notification.
Second, Atlantic argues that Perini acted in bad faith by failing to make a reasonable attempt to complete the MBTA project when the MBTA eliminated the undercutting. Atlantic contends that in its negotiations for an equitable adjustment of the contract, Perini requested an unreasonable increase in the contract price. Thus, Atlantic argues that Perini’s attempt to complete the project was in bad faith.
Based on the evidence presented, however, this argument fails. For one thing, a contractor may seek an equitable adjustment to the contract when a large quantity of work is eliminated.
See Peter Kiewit Sons’ Co. v. United States,
Moreover, a party who ceases performance under an output contract for independent business reasons acts in good faith.
Neofotistos,
CONCLUSION
Based on the evidence presented, the district court properly granted summary judgment in favor of Perini.
Affirmed.
Notes
. Rule 52(c) provides in relevant part:
If during a trial without a jury a party has been fully heard with respect to an issue and the court finds against the party on that issue, the court may enter judgment as a matter of law against that party on any claim ... that cannot under controlling law be maintained or defeated without a favorable finding on that issue....
. At this point, Perini had delivered approximately 15% of the materials estimated.
. Of course, the Code requires that Perini attempt to attain the materials in good faith. Mass.Gen.L. ch. 106, § 2-306.
. The comments to the Code shed little light on the issue as they, too, are ambiguous.
Empire Gas Corp. v. American Bakeries Co.,
