Oak Harbor Freight v. Sears Roebuck & Co. ( 2008 )


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  •                   FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    OAK HARBOR FREIGHT LINES, INC.,         
    a Washington corporation,
    Plaintiff-Appellee,
    v.
    SEARS ROEBUCK & CO., dba Sears               No. 06-35460
    Contract Sales, a foreign
    corporation,                                   D.C. No.
    CV-05-00284-TSZ
    Defendant-cross-claimant-
    Appellant,          OPINION
    and
    NATIONAL LOGISTICS CORPORATION,
    a foreign corporation,
    Defendant-cross-defendant.
    
    Appeal from the United States District Court
    for the Western District of Washington
    Thomas S. Zilly, District Judge, Presiding
    Argued and Submitted
    November 5, 2007—Seattle, Washington
    Filed January 18, 2008
    Before: William C. Canby, Jr., Susan P. Graber, and
    Ronald M. Gould, Circuit Judges.
    Opinion by Judge Graber
    667
    670        OAK HARBOR FREIGHT v. SEARS ROEBUCK
    COUNSEL
    Paula E. Litt and William B. Berndt, Schopf & Weiss LLP,
    Chicago, Illinois, for the defendant-appellant.
    Kenneth W. Hart, Larson Hart & Shepherd PLLC, Seattle,
    Washington, for the plaintiff-appellee.
    OAK HARBOR FREIGHT v. SEARS ROEBUCK             671
    OPINION
    GRABER, Circuit Judge:
    Plaintiff Oak Harbor Freight Lines, Inc. (“Oak Harbor”),
    brought suit against Defendants Sears Roebuck & Co.
    (“Sears”) and National Logistics Corporation (“NLC”) to
    recover nearly half a million dollars for transportation of
    Sears’ freight. NLC arranged the transportation, which Oak
    Harbor provided. Following cross-motions for summary judg-
    ment, the district court held NLC and Sears jointly and sever-
    ally liable for the charges under Washington law. In a later
    order, the district court held that Oak Harbor was entitled to
    both prejudgment and post-judgment interest, with the rate of
    prejudgment interest set according to Washington law. Sears
    timely appealed.1 We now affirm.
    FACTUAL AND PROCEDURAL HISTORY
    The district court’s opinion recites the facts in detail. Oak
    Harbor Freight Lines, Inc. v. Sears Roebuck & Co., 420 F.
    Supp. 2d 1138, 1140-45 (W.D. Wash. 2006). Because the
    facts are uncontested, we rely on the district court’s findings.
    Oak Harbor, a Washington corporation and licensed “motor
    carrier” under the Federal Motor Carrier Safety Act, 49
    U.S.C. § 13102(14), provides intrastate and interstate freight
    transportation. Sears is a New York corporation that, among
    other things, sells tools and appliances at wholesale and retail.
    NLC, an Illinois corporation, is a licensed and registered
    property “broker” that arranges transportation by motor car-
    rier under the authority of the Federal Motor Carrier Safety
    Act. 
    Id. § 13102(2).
    NLC provided both brokerage and non-brokerage services
    for Sears. As a part of its brokerage services, NLC arranged
    1
    NLC also appealed, but later abandoned its appeal.
    672          OAK HARBOR FREIGHT v. SEARS ROEBUCK
    for Oak Harbor to move Sears’ freight. See 49 C.F.R.
    § 371.2(c) (“ ‘Brokerage’ or ‘brokerage service’ is the arrang-
    ing of transportation or the physical movement of a motor
    vehicle or of property. It can be performed on behalf of a
    motor carrier, consignor, or consignee.”). As a part of its non-
    brokerage services, NLC reviewed and audited Oak Harbor’s
    freight bills and collected funds from Sears to pay those
    freight bills. See 
    id. § 371.2(d)
    (“ ‘Non-brokerage service’ is
    all other service performed by a broker on behalf of a motor
    carrier, consignor, or consignee.”).
    Oak Harbor hauled Sears’ freight for a number of years
    without the use of an intermediary. In 1989, Sears hired NLC
    to perform brokerage services. At first, NLC was hired only
    to perform brokerage services for “inbound” or “return” ship-
    ments, which involved identifying carriers to move freight
    from Sears’ vendors to Sears’ warehouses. By early 1992,
    Sears expanded the scope of NLC’s responsibilities to include
    broker services for “outbound” shipments. The outbound bro-
    kerage services required NLC to identify carriers to move
    Sears’ freight from Sears’ warehouses to various freight trans-
    portation and delivery companies.
    On January 8, 1992, Oak Harbor and NLC signed a
    National Logistics Corporation Carrier Contract (“Carrier
    Contract”) to govern their relationship. The Carrier Contract
    provided, in pertinent part:
    This AGREEMENT between NATIONAL
    LOGISTICS         CORPORATION           (BROKER/
    SHIPPER), operating under ICC Broker No.
    MC205436 and Oak Harbor Freight Lines, Inc.
    (CARRIER), MC # 139763 engaged in the business
    of conducting the transportation of regulated com-
    modities in Interstate Commerce over public high-
    ways, provides that NATIONAL LOGISTICS
    CORPORATION will offer a series of shipments to
    the CARRIER, which the CARRIER agrees to trans-
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                      673
    port. . . . BROKER/SHIPPER and CARRIER agree
    rates governing shipments will be established to
    meet the schedules verbally agreed upon and verbal
    agreement will be reduced to writing by CARRIER
    submitting its invoice to BROKER/SHIPPER. SHIP-
    PER agrees to pay CARRIER within a predeter-
    mined time from date of receipt regardless whether
    or not BROKER/SHIPPER has been paid for move-
    ment. . . . This AGREEMENT shall be effective on
    the date it is signed and will remain in full force and
    effect from signing date for twelve (12) months.
    AGREEMENT shall be automatically extended for
    successive twelve (12) month terms or until canceled
    by either party by giving written notice to the other
    party at least thirty (30) days prior to the date of ter-
    mination.
    (Emphasis added.) In accordance with the terms of the Carrier
    Contract, Oak Harbor and NLC negotiated the rates governing
    the shipments on a roughly annual basis. Other than with
    respect to rates, they never updated or replaced the Carrier
    Contract.
    Bills of lading were used for all of Sears’ freight carried by
    Oak Harbor.2 For return shipments, Oak Harbor generated the
    bills of lading (“return bills of lading” or “Oak Harbor-
    generated bills of lading”) using its standard, uniform straight
    bill of lading form. Oak Harbor designed its bills of lading to
    comply with industry standards. The return bills of lading des-
    ignated Sears as the “consignee” and were marked “collect.”
    2
    “The bill of lading is the basic transportation contract between the
    shipper-consignor and the carrier; its terms and conditions bind the shipper
    and all connecting carriers.” S. Pac. Transp. Co. v. Commercial Metals
    Co., 
    456 U.S. 336
    , 342 (1982) (addressing default liability terms for rail
    bills of lading); see also C.A.R. Transp. Brokerage Co. v. Darden Rests.,
    Inc., 
    213 F.3d 474
    , 478-79 (9th Cir. 2000) (applying S. Pac. Transp. to
    motor freight bills of lading). A bill of lading also can serve as a receipt
    for goods and as evidence of title. C.A.R. 
    Transp., 213 F.3d at 479
    n.5.
    674         OAK HARBOR FREIGHT v. SEARS ROEBUCK
    In the “Bill To” section of the return bills of lading, “Third
    Party Billing” was written.
    Sears generated the bills of lading for outbound shipments
    (“outbound bills of lading” or “Sears-generated bills of lad-
    ing”). As with the Oak Harbor-generated bills of lading, Sears
    designed its outbound bills of lading to comply with industry
    standards. On the bottom of the outbound bills of lading the
    following text appeared: “This document is tendered as an
    individual Bill of Lading. All terms and conditions of the
    straight Bill of Lading and applicable tariff and classifications
    in effect as of the date hereon apply.” The outbound bills of
    lading read “Freight Terms: PREPAID” and instructed the
    carrier to send freight bills to NLC. These bills of lading did
    not identify the “Shipper” or “Consignor,” but they did con-
    tain entries under the categories “Ship From,” “Consign to,”
    and “Carrier.” The “Ship From” category identified a Sears
    warehouse. The “Consign to” category identified the destina-
    tion of the shipment. The “Carrier” category identified Oak
    Harbor.
    In accordance with the terms of the bills of lading, billing
    and payment between the parties generally followed this pat-
    tern: (1) Oak Harbor sent NLC a billing invoice at least three
    days after Oak Harbor delivered the freight, and Oak Harbor
    expected to be paid by NLC within 30 days of the date shown
    on the invoice; (2) after auditing the invoices, NLC billed
    Sears weekly for the freight charges that had accumulated
    since the last billing date; (3) Sears paid NLC about five days
    after receiving the bill from NLC; and (4) NLC paid Oak Har-
    bor, with the funds received from Sears, about 25 days after
    NLC received Oak Harbor’s billing invoice.
    In mid-2004, Oak Harbor learned that Sears would no lon-
    ger use NLC as its broker as of January 2005. In fact, Sears
    terminated NLC’s services earlier, on November 12, 2004. By
    the end of November 2004, Oak Harbor was owed more than
    $400,000 for shipments of Sears’ freight. On December 12,
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                    675
    2004, NLC sent Oak Harbor a letter recommending that Oak
    Harbor seek payment directly from Sears. In response to
    inquiries by Oak Harbor concerning payment, Sears denied
    liability and informed Oak Harbor that NLC was responsible
    for the freight charges. By the time Oak Harbor sought collec-
    tion from Sears, Sears had paid $227,202.50 to NLC for
    freight charges invoiced by Oak Harbor.3
    In early 2005, Oak Harbor sued both NLC and Sears in
    Washington state court for “monies due.” Sears timely
    removed the proceeding to federal district court pursuant to
    28 U.S.C. §§ 1332, 1441, and 1446.
    Following cross-motions for summary judgment, the dis-
    trict court held “NLC and Sears jointly and severally liable to
    Oak Harbor for $426,417.94 in freight charges that were
    incurred in connection with [the] shipments arranged by
    NLC.” Oak 
    Harbor, 420 F. Supp. 2d at 1152
    . The district
    court also held that Sears was “entitled to recover in indem-
    nity against NLC any portion of the $227,202.50 that Sears
    directly pays Oak Harbor.” 
    Id. In reaching
    its holdings, the district court explained that
    NLC was liable to Oak Harbor under the Carrier Contract. 
    Id. at 1146-47.
    The district court did not premise Sears’ liability,
    however, on the Carrier Contract. Rather, the district court
    interpreted the bills of lading generated by Sears and Oak
    Harbor as imposing liability on Sears, which the Carrier Con-
    tract did not limit. 
    Id. at 1147-50.
    In an issue of first impres-
    sion within the Ninth Circuit, the district court followed the
    Fourth, Fifth, and Eleventh Circuits and adopted a rule that
    equitable estoppel does not bar Sears’ liability for the
    $227,202.50 already paid to NLC for freight shipments. 
    Id. at 1151.
      3
    Sears initially claimed to have paid about $278,000 of Oak Harbor’s
    freight bills, but later conceded that about $50,000 of that amount repre-
    sented NLC’s service charges and markup on the freight bills.
    676           OAK HARBOR FREIGHT v. SEARS ROEBUCK
    After the district court entered judgment, Oak Harbor
    moved for an award of prejudgment and post-judgment inter-
    est. The district court held Sears liable for prejudgment inter-
    est at the rate set by Washington state law and for post-
    judgment interest at the rate set by federal law.
    Sears timely appealed.
    STANDARDS OF REVIEW
    We review de novo a district court’s grant of summary
    judgment. Universal Health Servs. Inc. v. Thompson, 
    363 F.3d 1013
    , 1019 (9th Cir. 2004). Viewing the evidence in the
    light most favorable to the nonmoving party, we must deter-
    mine whether there are genuine issues of material fact and
    whether the district court correctly applied the relevant sub-
    stantive law. 
    Id. When, as
    here, the facts are not in dispute,
    the only question is whether the district court correctly
    applied the law. 
    Id. We review
    for abuse of discretion an award of prejudgment
    interest, Hayes v. Palm Seedlings Partners-A (In re Agric.
    Research & Tech. Group, Inc.), 
    916 F.2d 528
    , 533 (9th Cir.
    1990), but review de novo whether state or federal law applies
    to determine the amount and availability of prejudgment inter-
    est, McCalla v. Royal MacCabees Life Ins. Co., 
    369 F.3d 1128
    , 1129 (9th Cir. 2004).
    DISCUSSION
    A.     The district court correctly held Sears liable for the
    charges incurred by Oak Harbor in shipping Sears’
    freight.
    [1] As we have noted, a bill of lading is the basic transpor-
    tation contract between the shipper/consignor and the carrier,
    the terms and conditions of which bind the shipper and all
    connecting carriers. S. Pac. Transp. Co. v. Commercial Met-
    OAK HARBOR FREIGHT v. SEARS ROEBUCK              677
    als Co., 
    456 U.S. 336
    , 342 (1982). In the absence of a state-
    ment to the contrary, when a bill of lading is intended to
    conform to the industry standard, by default “the consignor
    remains primarily liable.” 
    Id. at 343.
    In C.A.R. Transportation
    Brokerage Co. v. Darden Restaurants, Inc., we explained the
    default terms and conditions of a standard bill of lading:
    The bill of lading provides that the owner or con-
    signee shall pay the freight and all other lawful
    charges upon the transported property and that the
    consignor remains liable to the carrier for all lawful
    charges. The bill of lading, however, also contains
    “nonrecourse” and “prepaid” provisions that, if
    marked by the parties, release the consignor and con-
    signee from liability for the freight charges. If the
    nonrecourse clause is signed by the consignor and no
    provision is made for the payment of freight, deliv-
    ery of the shipment to the consignee relieves the
    consignor of liability. Similarly, when the prepaid
    provision on the bill of lading has been marked and
    the consignee has already paid its bill to the con-
    signor, the consignee is not liable to the carrier for
    payment of the freight charges.
    
    213 F.3d 474
    , 478-79 (9th Cir. 2000) (citations and footnotes
    omitted).
    [2] Those default liability provisions can be modified by
    contract so as to make “the liability allocation presumptions
    on the bill of lading . . . unnecessary.” 
    Id. at 479.
    For exam-
    ple, if parties enter into a contract before preparing a bill of
    lading, and there is “an irreconcilable repugnancy between the
    prior written contract and the bills of lading, that conflict
    would have to be resolved in favor of the former.” Toyo Kisen
    Kaisha v. W.R. Grace & Co., 
    53 F.2d 740
    , 742 (9th Cir.
    1931). “It is only where the parties fail to agree or where dis-
    criminatory practices are present that the [bill of lading’s]
    default terms bind the parties.” C.A.R. 
    Transp., 213 F.3d at 678
               OAK HARBOR FREIGHT v. SEARS ROEBUCK
    479. In C.A.R. Transportation, we held that a carrier had
    modified the default provisions of certain bills of lading and
    had waived shipper/consignor liability when its employees
    signed a document, separate from the bills of lading, stating
    that the carrier would not seek payment from the shipper/
    consignor. 
    Id. at 476-79.
    [3] Here, the bills of lading used by the parties to ship
    Sears’ freight—both the Sears-generated bills of lading for the
    outbound shipments and the Oak Harbor-generated bills of
    lading for the return shipments—were designed to comply
    with industry standards. Accordingly, they adopted the default
    terms of the uniform straight bill of lading.4 Under those
    default terms, the shipper/consignor is liable for freight
    charges unless the bill of lading is marked “nonrecourse.” 
    Id. at 478-79.
    Sears was the shipper/consignor on the outbound
    bills of lading. Its bills of lading did not include a “nonre-
    course” clause. As a consequence, in the absence of a separate
    agreement, Sears is liable for the freight charges on the out-
    bound bills of lading.
    [4] Similarly, under the default terms, a consignee is liable
    for freight charges unless the bill of lading is marked “pre-
    paid.” 
    Id. Sears was
    the consignee on the return bills of lad-
    ing. Because the bills of lading were marked “collect”—not
    “prepaid”—in the absence of a separate agreement, Sears is
    liable for the freight charges on the return shipment bills of
    lading. In sum, in the absence of a separate agreement, Sears
    4
    The outbound bills of lading provided: “All terms and conditions of the
    straight Bill of Lading and applicable tariff and classifications in effect as
    of the date hereon apply,” thereby expressly adopting the rules for the
    Uniform Straight Bill of Lading. See, e.g., American Trucking Associa-
    tions, Inc., National Motor Freight Classification, STB NMF 100-AD,
    Uniform Bill of Lading Terms and Conditions (2003). Similarly, Oak Har-
    bor acknowledged that the bills of lading for return shipments were based
    on the industry standards: the Uniform Straight Bill of Lading form. See
    
    id. OAK HARBOR
    FREIGHT v. SEARS ROEBUCK              679
    is liable for Oak Harbor’s freight charges because of the
    default liability provisions that are part of the bills of lading.
    Although Sears agrees with these general principles, it nev-
    ertheless contends that, for three reasons, it should not be
    required to pay the freight charges. First, Sears argues that the
    Carrier Contract waives the default liability provisions of the
    bills of lading. Second, Sears argues that, if not a waiver, the
    Carrier Contract was the sole lawful contract governing the
    shipments, thereby rendering the bills of lading mere receipts.
    Third, even if the Carrier Contract does not modify the default
    liability provision, Sears argues that Oak Harbor is equitably
    estopped from collecting the freight charges from Sears. We
    address each argument in turn.
    1.   Carrier Contract—Waiver
    [5] The parties to a freight shipment generally are free to
    assign liability for the payment of freight charges through a
    contract separate from the bill of lading. Louisville & Nash-
    ville R.R. Co. v. Cent. Iron & Coal Co., 
    265 U.S. 59
    , 66-67
    (1924). Such a contract may provide that “the shipper agrees
    absolutely to pay the charges, or . . . merely that he shall pay
    if the consignee does not pay . . . , or . . . that only the [con-
    signee] shall be liable for the freight charges, or [that] both
    the shipper and the consignee may be made liable.” 
    Id. “It is
    only where the parties fail to agree or where discriminatory
    practices are present that the [bill of lading] default terms bind
    the parties.” C.A.R. 
    Transp., 213 F.3d at 479
    (emphases
    added).
    [6] Sears contends that the Carrier Contract between Oak
    Harbor and NLC waived Oak Harbor’s recourse against Sears
    under the otherwise-applicable default liability provisions of
    the bills of lading. Although it is well established that a con-
    tract between the parties to a bill of lading—the shipper, the
    carrier, and the consignee—can allocate liability for payment
    of freight charges, there is no support for the proposition that
    680           OAK HARBOR FREIGHT v. SEARS ROEBUCK
    a contract with a broker, who is not a party to the bill of lad-
    ing, can do the same. See 
    Louisville, 265 U.S. at 67
    (looking
    to the promises, if any, made by the shipper to determine lia-
    bility for payment of freight charges); S. Pac. 
    Transp., 456 U.S. at 342
    (“The bill of lading is the basic transportation
    contract between the shipper-consignor and the carrier.”);
    C.A.R. 
    Transp., 213 F.3d at 478-79
    (“The bill of lading pro-
    vides that the owner or consignee shall pay the freight . . . and
    that the consignor remains liable to the carrier . . . .”).
    Sears cites no authority to support its proposition that a
    contract between a carrier and a broker can modify the default
    liability provisions of a bill of lading. In each of the two cases
    on which Sears primarily relies, Toyo Kisen, 
    53 F.2d 740
    , and
    Roll Form Products, Inc. v. All State Trucking Co. (In re Roll
    Form Products, Inc.), 
    662 F.2d 150
    (2d Cir. 1981), the con-
    tracts at issue were entered into between a carrier and the
    direct parties to the bill of lading—the shipper, consignor, or
    consignee. Neither case involved a contract with a broker.
    [7] Only Oak Harbor and NLC executed the Carrier Con-
    tract. Sears was neither named in, nor a signatory to, that
    agreement. The Carrier Contract never mentions or refers to
    Sears by name or description. The Carrier Contract makes no
    express or implied statements that Sears will not pay Oak
    Harbor for the shipments, nor does the contract make any
    express or implied statements that Oak Harbor will not seek
    payment from Sears. The Carrier Contract merely provides
    that NLC will be liable for freight charges regardless whether
    or not NLC is paid.5 This agreement by NLC to be liable for
    5
    The Carrier Contract states that “SHIPPER agrees to pay CARRIER
    within a predetermined time . . . regardless whether or not BROKER/
    SHIPPER has been paid.” The district court found that the term “SHIP-
    PER” means NLC, because Sears “could not have ‘agreed’ to anything
    given that it was not a party to, and did not sign, the contract . . . [and]
    NLC, not Sears, was receiving Oak Harbor’s freight bills and was
    expected to pay them within thirty days.” Oak 
    Harbor, 420 F. Supp. 2d at 1146
    . As the district court found, and Sears does not challenge, the Car-
    rier Contract can be understood as follows: “NLC agrees to pay Oak Har-
    bor within a predetermined time . . . regardless whether or not NLC has
    been paid.”
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                     681
    the freight charges does not imply that Sears is not liable. To
    hold as Sears wishes would permit a shipper to insulate itself
    from liability for the payment of freight charges by the simple
    act of using a broker. We hold that the Carrier Contract did
    not alter Sears’ liability for the freight charges under the bills
    of lading.6
    2.    Carrier Contract—Sole Lawful Contract
    In the alternative, Sears argues that the Carrier Contract
    was the sole lawful contract for the freight shipments and that
    the bills of lading were merely receipts. Sears first notes that,
    in 1992, when Oak Harbor and NLC executed the Carrier
    Contract, federal law required that Oak Harbor enter into a
    written agreement to charge below-tariff rates. 49 C.F.R.
    § 1053.1 (1991) (repealed June 20, 1992). Oak Harbor con-
    cedes that it intended the Carrier Contract to comply with that
    regulation. As a result, Sears reasons, Oak Harbor and NLC
    intended that the Carrier Contract be the sole legal contract
    for shipments, thereby foreclosing the possibility that the bills
    of lading had any effect other than as receipts.
    [8] The former regulation that Sears cites did not presume
    to control all aspects of a carriage agreement. Rather, the reg-
    ulation provided only that such agreements “shall be in writ-
    ing, shall provide for transportation for a particular shipper or
    shippers, shall be bilateral and impose specific obligations
    upon both carrier and shipper or shippers, [and] shall cover a
    series of shipments during a stated period of time.” 
    Id. Criti- cally,
    the regulation did not require that the agreement be the
    exclusive contract for the carriage of goods. Consequently,
    6
    Sears’ further argument—that the district court created a “super-
    waiver” requirement by holding that the Carrier Contract did not constitute
    an “unequivocal waiver of Oak Harbor’s rights to collect freight charges,”
    Oak 
    Harbor, 420 F. Supp. 2d at 1149
    —is equally unavailing on de novo
    review. The Carrier Contract contains no waivers—express or implied—of
    the default liability provisions in the bills of lading.
    682         OAK HARBOR FREIGHT v. SEARS ROEBUCK
    the regulation does not displace the default liability provisions
    for bills of lading, which we have discussed above.
    [9] Sears also argues that the bills of lading could not func-
    tion as contracts, because the Carrier Contract contains the
    price term for the shipments. In support, Sears cites Toyo
    Kisen, in which we explained that, when there is “irreconcil-
    able repugnancy between the prior written contract and the
    bills of lading, that conflict would have to be resolved in favor
    of the former.” Toyo Kisen 
    Kaisha, 53 F.2d at 742
    . We found
    an “irreconcilable repugnancy” in Toyo Kisen because the oral
    and written agreements at issue provided that payment for dis-
    puted freight charges would occur only after delivery of the
    goods to Hawaii, while the bill of lading provided that pay-
    ment for the freight charges would occur whether or not the
    goods were delivered. 
    Id. at 741.
    [10] There is no such irreconcilable repugnancy between
    the Carrier Contract and the bills of lading in this case. They
    operate concurrently and in harmony to provide the key terms
    for Sears’ freight shipments. The bills of lading contain no
    price terms, while the Carrier Contract determines the price
    for the shipments. The Carrier Contract does not address
    Sears’ liability for payment of freight charges, while the
    default provisions in the bills of lading make Sears liable. The
    bills of lading identify the shipper, consignor, and consignee;
    describe where the goods are to be picked up and where they
    are to be delivered; and contain the payment liability terms of
    “prepaid” or “collect” to the bills of lading, none of which the
    Carrier Contract provides.
    [11] In summary, the regulations under which Oak Harbor
    and NLC entered into the Carrier Contract did not require that
    the Carrier Contract constitute the sole agreement for the
    shipment of freight. In addition, the terms of the Carrier Con-
    tract and the terms of the bills of lading work in harmony to
    supply different aspects of the parties’ relationship; we can
    give effect to both the Carrier Contract and the bills of lading
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                     683
    as concurrent contracts for the carriage of Sears’ freight.
    Accordingly, we hold that the Carrier Contract did not consti-
    tute the sole legal agreement for the carriage of Sears’ freight.
    3.    Equitable Estoppel
    [12] Sears further argues that it “paid NLC for the majority
    of the freight charges at issue” and that, as “an innocent
    party,” it “should not be required to pay twice.”7 In other
    words, Sears contends that equitable estoppel should bar Oak
    Harbor’s collection of the freight charges from it. Whether the
    shipper or the carrier bears the risk if a freight forwarder, bro-
    ker, or consolidator fails to forward a freight payment, or if
    a consignee fails to forward a freight payment, is a question
    of first impression for this circuit.
    In support of its position, Sears relies primarily on the Sixth
    Circuit’s decision in Olson Distributing Systems, Inc. v. Gla-
    surit America, Inc., 
    850 F.2d 295
    (6th Cir. 1988). In that case,
    a motor carrier sought payment from a shipper for freight bills
    that the carrier had submitted to a freight forwarder. 
    Id. at 295.
    The shipper paid the freight forwarder, but the freight
    forwarder absconded with the money and never paid the car-
    rier. 
    Id. Although the
    bills of lading were marked “prepaid,”
    and the shipper did not sign the “nonrecourse” clause on the
    bills of lading, the Sixth Circuit held that the risk of loss
    should rest with the carrier. 
    Id. at 295-96.
    The Sixth Circuit pointed to four critical facts in reaching
    its holding. First, the carrier provided the shipper with freight
    bills stating that the freight charges were to be paid to the
    freight forwarder, not the carrier. 
    Id. at 297.
    In other words,
    7
    Sears’ argument ignores that it paid only $227,202.50 of the
    $426,417.94 in charges incurred by Oak Harbor in shipping Sears’ freight.
    Nearly $200,000 in freight charges never has been paid by Sears to NLC
    or Oak Harbor, even though Sears received the full benefit of both of their
    services.
    684           OAK HARBOR FREIGHT v. SEARS ROEBUCK
    the carrier’s own bills indicated that the carrier should not
    expect payment from the shipper. 
    Id. Second, the
    carrier did
    not diligently bill the freight forwarder for shipments, waiting
    until “two to three months after the last delivery” before send-
    ing any freight bills to the freight forwarder. 
    Id. at 295.
    Third,
    the carrier violated then-current credit regulations established
    by the Interstate Commerce Commission which, had the car-
    rier followed, would have allowed the carrier to identify that
    the freight forwarder was absconding with the money. 
    Id. at 297.
    Finally, had the carrier notified the shipper sooner, the
    carrier could have limited its losses. 
    Id. The court
    concluded:
    “Here[,] the doctrine of equitable estoppel requires that the
    loss fall on the carrier because its actions had the effect of
    lulling the shipper into believing that it was expecting and
    receiving payment from the freight forwarder.” 
    Id. at 296.
    [13] We agree with the district court that Olson is an “outli-
    er,” the extreme facts of which bear little resemblance to what
    happened here.8 Oak 
    Harbor, 420 F. Supp. 2d at 1151
    . Three
    of our sister circuits—the Fourth, Fifth, and Eleventh Circuits
    —have reached a conclusion at odds with Olson on facts
    much closer to those before us. Those courts have held that
    a shipper should bear the risk when it chooses to pay for
    freight charges through a broker rather than directly to the
    carrier. Hawkspere Shipping Co. v. Intamex, S.A., 
    330 F.3d 225
    , 237-38 (4th Cir. 2003); Strachan Shipping Co. v.
    Dresser Indus., Inc., 
    701 F.2d 483
    , 489-90 (5th Cir. 1983);
    Nat’l Shipping Co. of Saudi Arabia v. Omni Lines, Inc., 106
    8
    Citing out-of-circuit authority, Sears takes exception to the “outlier”
    characterization. That authority is not availing. In two of the cited cases,
    the courts held that equitable estoppel is available when an innocent con-
    signee paid a shipper/consignor and received a bill of lading from the car-
    rier marked “prepaid.” See EF Operating Corp. v. Am. Bldgs., 
    993 F.2d 1046
    , 1052 (3d Cir. 1993); Consol. Freightways Corp. v. Admiral Corp.,
    
    442 F.2d 56
    , 59-60 (7th Cir. 1971). The third cited case is even further
    from the point, because it addressed a misapplication of mandatory tariff
    rates where no double payment had occurred. Inman Freight Sys., Inc. v.
    Olin Corp., 
    807 F.2d 117
    , 121 (8th Cir. 1986).
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                
    685 F.3d 1544
    , 1546-47 (11th Cir. 1997). As noted by the district
    court, Oak 
    Harbor, 420 F. Supp. 2d at 1151
    , the policy rea-
    sons for this result are persuasive. The Fifth Circuit wrote:
    [W]e think that our result comports with economic
    reality. A freight forwarder provides a service. He
    sells his expertise and experience in booking and
    preparing cargo for shipment. He depends upon the
    fees paid by both shipper and carrier. He has few
    assets, and he books amounts of cargo far exceeding
    his net worth. Carriers must expect payment will
    come from the shipper, although it may pass through
    the forwarder’s hands. While the carrier may extend
    credit to the forwarder, there is no economically
    rational motive for the carrier to release the shipper.
    The more parties that are liable, the greater the assur-
    ance for the carrier that he will be paid.
    
    Strachan, 701 F.2d at 490
    . Furthermore, as those courts have
    explained, the shipper, and not the carrier, is in the best posi-
    tion to avoid liability for double payment by dealing with a
    reputable freight forwarder, by contracting with the carrier to
    eliminate the shipper’s liability, or by simply paying the car-
    rier directly. See Nat’l 
    Shipping, 106 F.3d at 1547
    (recom-
    mending using reputable freight forwarders or contracting to
    eliminate liability); 
    Hawkspere, 330 F.3d at 237
    (recommend-
    ing paying the carrier directly).
    Sears contends that Southern Pacific Transportation sup-
    ports its position. In Southern Pacific Transportation, the
    Court stated that “double payment cases constitute their own
    category and stand against the placement of duplication of lia-
    bility upon an innocent 
    party.” 456 U.S. at 351
    . Sears’ reli-
    ance is misplaced. In Southern Pacific Transportation, the
    Court refused to grant an estoppel defense to a shipper/
    consignor because, among other reasons, (a) the shipper/
    consignor was paid for the goods but the carrier was not paid
    for its services; and (b) the shipper/consignor, having failed
    686           OAK HARBOR FREIGHT v. SEARS ROEBUCK
    to mark the bill of lading as “nonrecourse,” remained primar-
    ily liable for the freight 
    charges. 456 U.S. at 351-52
    . The
    Court acknowledged that some cases applied equitable estop-
    pel to bar recovery of freight charges by a carrier. 
    Id. at 351.
    But the Court noted that those cases applied estoppel only in
    limited circumstances: “Each and all of them involved a carri-
    er’s misrepresentation, such as a false assertion of prepayment
    on the bill of lading, upon which a consignee detrimentally
    relied only to find itself later sued by the carrier for the same
    freight charges.” 
    Id. Carriers involved
    in misrepresentation
    “constitute their own category and stand against the place-
    ment of duplication of liability upon an innocent party.” 
    Id. With respect
    to the outbound shipments as to which Sears
    was shipper/consignor, we agree with the district court that
    the Hawkspere, Strachan, and National Shipping line of
    authority best applies to the facts of this case. Sears generated
    the bills of lading and failed to protect itself with a “nonre-
    course” designation. In addition, Sears selected NLC and
    directed Oak Harbor to submit its bills through NLC.
    With respect to the return shipments, Sears was not an “in-
    nocent consignee.” The bills of lading clearly were marked
    “collect,” which put Sears on notice that payment was due.9
    In addition, Sears undertook no actions to limits its liability.
    In particular, Sears could have elected to pay Oak Harbor
    directly, but did not, and thereby assumed the risk that NLC
    would fail to forward payment. Furthermore, unlike in Olson,
    Oak Harbor did not extend credit to NLC in violation of fed-
    eral regulations, and it immediately sought payment from
    Sears when NLC abrogated its responsibility to forward
    Sears’ freight payments.
    [14] Thus, we hold that equitable estoppel does not bar Oak
    9
    Had the bills of lading been marked “prepaid,” Sears could have
    argued that it relied detrimentally on a representation by Oak Harbor. But
    they were not so marked.
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                687
    Harbor’s recovery of freight charges from Sears, notwith-
    standing Sears’ payment of a portion of those freight charges
    to NLC.
    B.     The district court correctly awarded prejudgment
    interest to Oak Harbor under Washington law.
    On motion by Oak Harbor, the district court awarded pre-
    judgment interest beginning December 15, 2004, at the rate
    specified by Washington state law. Sears challenges the dis-
    trict court’s award of prejudgment interest on two grounds.
    First, Sears contends that prejudgment interest was improper
    because Oak Harbor failed to present evidence of the date on
    which Sears’ payments to Oak Harbor were due. Second,
    Sears contends that, assuming an award of prejudgment inter-
    est was proper, the court should apply the federal rate estab-
    lished by 28 U.S.C. § 1961, because the judgment against
    Sears was premised on federal law.
    1.     Award of Prejudgment Interest
    The district court calculated prejudgment interest using a
    single “due” date of December 14, 2004, for all 3,386 ship-
    ments made by Sears during the approximately four-month
    period at issue. Oak Harbor proposed that date in its motion
    for prejudgment interest, as follows:
    Each of the freight charges at issue here was billed
    at a different date during a time span of about 3-1/2
    months, beginning in August and ending in Novem-
    ber 2004. Therefore, Oak Harbor would be entitled
    to prejudgment interest on each such invoice running
    from the separate date that each became due and
    payable. However, because there were so many
    invoices and each was for a relatively small amount,
    for the sake of simplicity, Oak Harbor will assume
    for the purposes of this motion that: (1) all 3,386
    shipments occurred on the same day; (2) that they
    688          OAK HARBOR FREIGHT v. SEARS ROEBUCK
    were all then billed in due course on the same day;
    and, (3) therefore, became due and payable on the
    same day.
    For the purposes of this motion, therefore, Oak
    Harbor will assume that all 3,386 shipments
    occurred on November 11, 2004. This was the day
    before Sears terminated NLC and instructed Oak
    Harbor to begin as of November 12 to send its
    freight bills to Menlo Logistics for processing and
    payment. Consequently, it is [the] last shipment date
    for which freight invoices would have gone to NLC
    for payment. It will further be assumed, therefore,
    that in the normal course of business, by 3 days later
    on November 14, 2004, NLC had received all 3,386
    freight bills from Oak Harbor, for which payment
    was then due no later than 30 day[s] later on Decem-
    ber 14, 2004.
    Sears contends that the district court’s grant of prejudgment
    interest was improper because the court held Sears liable for
    the cost of the shipments under the bills of lading, and those
    bills of lading did not specify a date on which payments to
    Oak Harbor were due. But, the assumptions that the district
    court adopted for purposes of the motion (the ordinary course
    of billing between the parties and the date of termination of
    NLC) were consistent with the undisputed evidence in the
    case. The district court found that, in the ordinary course of
    their business dealings, NLC billed Sears weekly for the
    freight shipments, and Sears paid NLC approximately five
    days after receiving a bill. Oak 
    Harbor, 420 F. Supp. 2d at 1144-45
    . As noted above, Sears terminated NLC’s services on
    November 12, 2004. Applying those assumptions, Sears
    would have paid NLC well before December 14, 2004.
    [15] The only authority that Sears cites to argue against the
    award of the prejudgment interest actually supports the propo-
    sition that a district court can use certain shortcuts to achieve
    OAK HARBOR FREIGHT v. SEARS ROEBUCK                    689
    a “fair figure for the interest” to avoid numerous calculations.
    See Chandler v. Bombardier Capital, Inc., 
    44 F.3d 80
    , 84 (2d
    Cir. 1994) (holding that the district court did not abuse its dis-
    cretion in applying, over a longer period of time, a much
    lower interest rate than it otherwise might have applied
    because the interest was fair and the court avoided “establish-
    ing a separate interest figure for each lost monthly payment”).
    We agree with the Second Circuit’s practical approach. Con-
    sequently, we hold that the district court did not abuse its dis-
    cretion in adopting December 14, 2004, as the date from
    which prejudgment interest should accrue.
    2.   Application of Washington Law to Prejudgment
    Interest
    “Prejudgment interest is a substantive aspect of a plaintiff’s
    claim, rather than a merely procedural mechanism.” Sea
    Hawk Seafoods, Inc. v. Exxon Corp. (In re the Exxon Valdez),
    
    484 F.3d 1098
    , 1101 (9th Cir. 2007). State law generally gov-
    erns awards of prejudgment interest in diversity actions, but
    federal law may apply to the calculation of prejudgment inter-
    est when a substantive claim derives from federal law alone.
    See 
    id. at 1100-02
    (“In cases tried under admiralty principles
    only, principles of federal law govern a plaintiff’s entitlement
    to prejudgment interest even though the plaintiff may have
    invoked diversity jurisdiction . . . .” (internal quotation marks
    omitted)).
    [16] Sears argues that, because the district court relied on
    federal law for its decision, federal law should apply to the
    award of prejudgment interest if one is to be made.10 That
    argument ignores the fact that the action was brought, and
    judgment was entered, on a state law claim for “monies due.”
    Oak 
    Harbor, 420 F. Supp. 2d at 1146
    . That the district court
    cited federal precedents in reasoning to its holding does not
    10
    Sears’ only appellate challenge to the rate of prejudgment interest is
    the application of state, rather than federal, law.
    690         OAK HARBOR FREIGHT v. SEARS ROEBUCK
    convert the case into one premised on federal substantive law.
    We hold that the district court did not err in applying Wash-
    ington state law to the award of prejudgment interest.
    AFFIRMED.