Commonwealth of Virginia and Department of Transportation v. AMEC Civil, LLC ( 2012 )


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  •                                COURT OF APPEALS OF VIRGINIA
    Present: Judges Elder, Alston and Senior Judge Coleman
    Argued at Richmond, Virginia
    COMMONWEALTH OF VIRGINIA AND
    DEPARTMENT OF TRANSPORTATION
    MEMORANDUM OPINION * BY
    v.     Record No. 2134-11-2                                      JUDGE LARRY G. ELDER
    MAY 22, 2012
    AMEC CIVIL, LLC
    FROM THE CIRCUIT COURT OF MECKLENBURG COUNTY
    Charles E. Poston, Judge Designate
    Stephen G. Test (Sarah K. McConaughy; Richard Tyler McGrath,
    Senior Assistant Attorney General; Williams Mullen; Office of the
    Attorney General, on briefs), for appellants.
    J. Tracy Walker, IV (Anne Marie Whittemore; Richard C.
    Beaulieu; Gregory S. Martin; McGuireWoods LLP; Gregory S.
    Martin & Associates, PA, on brief), for appellee.
    This case involves a contract dispute between the Commonwealth and the Department of
    Transportation (hereinafter collectively VDOT) and AMEC Civil, LLC (hereinafter AMEC),
    over the construction of the Route 58 Clarksville Bypass in Mecklenburg County. The contract
    price was just under $72.5 million. When completion of the project was delayed by a year and
    seven months, AMEC submitted an administrative claim to VDOT for additional compensation
    of over $24 million. VDOT denied the claim.
    AMEC challenged the denial in a civil suit as permitted by statute. The circuit court
    awarded AMEC approximately $21 million. Both parties appealed to this Court, which affirmed
    in part, reversed in part, and remanded. VDOT v. AMEC, 
    54 Va. App. 240
    , 
    677 S.E.2d 633
    *
    Pursuant to Code § 17.1-413, this opinion is not designated for publication.
    (2009). Both parties then appealed to the Virginia Supreme Court, which also affirmed in part,
    reversed in part, and remanded to the circuit court “to recalculate damages awarded to AMEC.”
    VDOT v. AMEC, 
    280 Va. 396
    , 403, 
    699 S.E.2d 499
    , 503 (2010). After the circuit court made a
    revised award of approximately $12 million, VDOT noted the instant appeal.
    In this appeal, VDOT assigns error to numerous aspects of the circuit court’s revised
    calculation of damages. VDOT contends the court should have applied judicial estoppel, see
    infra Part II.A., or law-of-the-case principles, see infra Part II.B., to hold on remand that AMEC
    was bound by the testimony of its sole damages expert, Theodore NeSmith, that its damages
    were as reflected in NeSmith’s exhibits and that the court erred in relying on the testimony of
    AMEC’s assistant project manager Bryon Breese and the document he prepared for purposes of
    the administrative claim. VDOT contends further that the circuit court erred in accepting and
    relying on opinion testimony from Breese over VDOT’s objection, see infra Part II.C., and in
    accepting estimates of costs rather than actual costs as proof of damages on remand, see infra
    Part II.D. Next, it contends the circuit court erred in awarding forty days of damages for delays
    caused by an unexpected site condition, boulders, contending AMEC failed to prove its
    entitlement to more than eight days of damages. See infra Part II.E.1. Further, it contends the
    circuit court erroneously awarded damages to AMEC for requiring it to work through the winter
    of 2003 to 2004 when AMEC failed to provide prima facie evidence of the actual weather and
    the extent of its impact on critical activities for specific days and failed to keep daily records and
    provide an itemized list of equipment, labor, and materials as required by the contract. See infra
    Part II.E.2. Finally, it challenges the way in which the circuit court calculated various
    components of the damages award, including delay damages for the boulders, the first winter and
    high water periods, see infra Part II.E.1 to E.3., as well as some of the acceleration damages and
    extra work required due to an error in the plans, see infra Part II.E.4 to E.5. In an assignment of
    -2-
    cross-error, AMEC contends the circuit court erred in denying its claim for post-judgment
    interest. See infra Part II.F.
    We hold the circuit court did not err in concluding it was free to use Breese’s rather than
    NeSmith’s data and calculations on remand. We hold further the court did not err in concluding
    AMEC was entitled to recover for the entire 121-day period of winter work for the 2003-2004
    winter season. However, we hold the circuit court erred in awarding AMEC damages for forty
    days of delay due to boulders when the evidence established only eight days of delay. Finally,
    we hold the circuit court erred in interpreting the meaning of actual costs for purposes of proving
    damages and that this error requires the recalculation of several components of its damages
    award. As to AMEC’s cross-assignment of error challenging the circuit court’s refusal to award
    post-judgment interest, we hold AMEC waived that claim by failing to raise it in the first appeal.
    Thus, we affirm in part, reverse in part, and remand for a recalculation of damages consistent
    with this opinion.
    I. BACKGROUND
    VDOT awarded AMEC this approximately $72.5 million project in May 2000. The
    central element of the project was a bridge (bridge 616) spanning the John H. Kerr Reservoir
    (Kerr Lake), which required work to be performed from equipment floating on the lake. The
    project also included ten smaller bridges (including bridge 640) and about four miles of roadway.
    The time allotted for the project was forty-one months, with a projected completion date of
    November 1, 2003. However, the project was not substantially complete until June 2005,
    approximately nineteen months after the original completion date. Delays arose primarily from
    sustained elevated lake water levels and difficulties with the construction of concrete-filled
    drilled shafts that formed the foundation of bridge 616, which pushed construction into two
    additional winter periods. AMEC sought to recover for these delays.
    -3-
    In 2006, AMEC submitted an administrative claim to VDOT for $24,792,823.43. That
    claim was prepared mostly by Bryon Breese, AMEC’s assistant project manager at the site.
    After VDOT denied the administrative claim, AMEC filed the instant contract action. At trial,
    AMEC introduced the administrative claim and offered testimony from Breese about its
    contents. VDOT objected to portions of Breese’s testimony on the ground that the testimony
    involved opinion and AMEC had not identified Breese as an expert in advance of trial. The
    circuit court held that Breese, as the author of the document containing facts, was qualified to
    testify about those facts and that it “[did not] see this [as] an expert testimony issue.”
    Breese’s testimony established that he served as assistant project manager from October
    2002 through project completion in 2005. In addition to quality problems with structural steel
    work performed by subcontractor Mitsubishi, the project began to face elevated lake levels in
    early 2003, which had “a significant impact” on AMEC’s ability to proceed with bridge 616.
    The project, which was scheduled to be completed by November 1, 2003, was not substantially
    completed until June 2005.
    Breese’s duties included managing the project’s schedule and budget, including the
    purchasing of materials, and overseeing data entry into the software program for managing those
    items. He testified about AMEC’s cost accounting system and software and how the data was
    gathered and input into the system.
    Breese testified about the document he prepared to support AMEC’s administrative claim
    (introduced into evidence as AMEC’s exhibit 487), in which he calculated four general
    categories of damages: (1) delay damages, (2) acceleration, (3) loss of productivity, and
    (4) other remaining open items. As to the category over which the biggest dispute arose, delay
    -4-
    damages, Breese testified he used data from the period of December 2002 to November 2004 1
    and calculated monthly totals for various categories of time-related job site overhead. Those
    categories included “management and staff salaries, time relate[d] office space, equipment,
    supplies and consumables[,] and service equipment.” Using the total figures for each of those
    categories for that twenty-four-month period, which included 731 days, he calculated a daily rate
    for job site overhead and multiplied that daily rate by 586, the number of days of delay from
    November 1, 2003, to June 9, 2005. He then applied various credits due as a result of proceeds
    received from resolution of the problems caused by Mitsubishi, a subcontractor responsible for
    installing at least some of the structural steel on the project.
    AMEC also offered the testimony of Theodore NeSmith, a certified public accountant
    and certified valuation analyst. NeSmith was the only person AMEC asked to qualify as a
    damages expert for construction cost accounting and construction damage calculations. NeSmith
    said he was tasked with reviewing AMEC’s existing damages report, which had been prepared
    by Breese. In the course of doing so, he reviewed and performed “[e]xtensive testing” on
    AMEC’s job cost data, which was recorded on time sheets and invoices and then entered into
    AMEC’s software program. He found the job cost data to be reliable with regard to labor,
    materials, subcontracts, and leased equipment.
    With regard to the job cost data for owned equipment, NeSmith “[found] some problems”
    with the records which resulted in their understating equipment use. He said such problems were
    1
    When asked why he selected that time frame, Breese testified, incorrectly, “that’s the
    period of time in which we were delayed so the original project completion was November ’02.”
    The project was scheduled, instead, to be completed November 1, 2003, and was not
    substantially completed until June 2005, more than six months after the November 2004 date
    which served as the cutoff for the period of delay Breese examined in detail. Breese said nothing
    to indicate expressly that he was aware of his error. He also said, however, that his figures “go
    all the way out to November ’04. So that’s a period of delay.” (Emphasis added). This
    language permits the inference that Breese intended to examine only a snapshot period of the
    delay, not the entire period, in order to calculate an average daily delay rate.
    -5-
    normal for the industry, and he opined that any deficiencies were not problematic because Blue
    Book rates for equipment, which estimated actual costs, rather than actual usage figures were
    going to be used. NeSmith testified he performed a “comparative analysis” of labor costs and
    equipment usage to confirm the expected “correlation of reasonableness between ultimate labor
    overage and ultimate equipment overage.”
    NeSmith testified that, overall, he was “extremely impressed” with the quality of
    Breese’s report “recognizing that his background is primarily that of an engineer.” He also said
    Breese did a very good job of not duplicating costs by providing credits in his calculations where
    there was overlap in the various categories.
    NeSmith did make downward adjustments in Breese’s calculations for three different
    categories of damages. He eliminated approximately $800,000 of damages Breese had included
    in the delay claim for use of each of the specific pieces of AMEC-owned equipment. NeSmith
    testified Breese’s figure for use of AMEC-owned equipment was based on Breese’s position that
    much of AMEC’s equipment was being worked in excess of the 176 hours per month upon
    which the Blue Book rates were based. As a result, Breese concluded that “there didn’t need to
    be a full credit” for the sums recovered from Mitsubishi. NeSmith testified he “took . . . a much
    more conservative approach” by crediting the full amount of the sums recovered, which
    eliminated that $800,000 from the delay damages claim. For “the exact same” reasons, NeSmith
    eliminated an additional approximately $2 million based on equipment use included in the
    Mitsubishi matter. NeSmith testified that he “did not consider [Breese’s] assessment to be
    wrong” and that he made the changes in order “to take the conservative approach” to avoid “any
    criticism.” NeSmith testified that using the Blue Book is most reflective of the true cost of
    operating owned equipment. NeSmith also eliminated approximately $400,000 from Breese’s
    calculation of “field overhead” because it contained “some items that were not truly, in [his]
    -6-
    opinion, what [he] would call time related.” NeSmith testified the three deductions reduced the
    total damages claimed by about $3.3 million.
    NeSmith’s supporting documentation was admitted into evidence as exhibits 610.4, 612,
    612.1, and 612.3. For purposes of calculating extended field office or job site overhead,
    NeSmith, like Breese, calculated an average daily rate rather than relying on actual costs for the
    period of delay from November 1, 2003, forward. NeSmith, like Breese, used data from the
    twenty-four-month period from December 1, 2002, to November 30, 2004.
    NeSmith’s exhibits showed claimed damages, not including pre-judgment interest, of
    $21,181,941. AMEC’s proposed conclusions sought damages in that same amount, not
    including pre-judgment interest, based on NeSmith’s exhibit 610.4. The circuit court rendered a
    “general verdict” for precisely that amount, and it expressly denied the claim for interest. Thus,
    it appears the circuit court adopted the evidence of AMEC’s only expert witness, Theodore
    NeSmith, as to damages.
    On appeal, the Supreme Court held with respect to the calculation of damages from
    elevated lake water levels, that VDOT contract specification § 109.05, 2 which contained
    provisions allowing profit “mark-ups” for “extra work” and “force account work,” used by both
    Breese and NeSmith, did not apply. 280 Va. at 420-21, 
    699 S.E.2d at 513
    . Instead, it held that
    specification § 104.03 applied. That specification “provides relief to contractors when differing
    site conditions impede performance of the contract” and permits damages in the form of “‘an
    adjustment, excluding anticipated profits.’” Id. at 421, 
    699 S.E.2d at 513
     (quoting specification
    § 104.03). The Court ordered that “[u]pon remand, the circuit court shall calculate the
    appropriate adjustment to the contract, excluding any profit, based on costs incurred by AMEC
    2
    VDOT’s Metric Road and Bridge Specifications (Jan. 1997) (hereinafter the
    specifications or specification § X) (VDOT exhibit 372.1) were expressly incorporated into the
    contract between VDOT and AMEC. See 280 Va. at 403 n.2, 
    699 S.E.2d at
    503 n.2.
    -7-
    through increased time required to perform the contract, as a result of sustained elevated lake
    water levels.” Id. at 421, 
    699 S.E.2d at 513-14
    . It held further that, based on a lack of proof in
    this case, AMEC was not entitled to recover home office overhead expenses. Id. at 421-23, 
    699 S.E.2d at 514
    . Next, it noted the measure of damages is “actual cost.” Based on what it said was
    unchallenged expert testimony from NeSmith, it held that “use of the Blue Book is an accepted
    method to prove actual costs,” id. at 424-25, 
    699 S.E.2d at 515-16
    , and it directed that “in
    computing owned equipment costs, the circuit court shall calculate a damage award based upon
    Blue Book estimates, as testified by expert witnesses, which reflect actual costs,” id. at 427, 
    699 S.E.2d at 517
    . Finally, it directed that “[o]n remand, in deciding the issues addressed by this
    Court, the circuit court shall review the evidence already presented in the case and[, on that
    basis,] calculate damages to which AMEC is entitled.” 
    Id.
    On remand, the circuit court used AMEC’s exhibit 487, prepared by Breese, to calculate
    most of the damages. It largely ignored the evidence of NeSmith. For example, it used an
    average daily rate figure taken from Breese’s exhibit 487 to calculate the delay damages caused
    by the boulders. It also determined AMEC was entitled to damages only for the first winter
    period and used figures from Breese’s exhibit 487 to determine the delay damages incurred. It
    awarded damages for some of the delay caused by high water, used Breese’s actual data for
    specific months, and prorated those figures to determine the amount of damages to award. As to
    acceleration damages, based on the Supreme Court’s ruling that AMEC was entitled to recover
    only those acceleration damages incurred after April 2004, the circuit court prorated AMEC’s
    acceleration damages from actual cost amounts provided for a period longer than the period for
    which the Supreme Court held they were awardable. The circuit court made a total award on
    remand of $12,007,953.64. Slip op. at 25, 
    2011 Va. Cir. LEXIS 83
    , at *50.
    -8-
    II. ANALYSIS
    A. THE MANDATE RULE, JUDICIAL ESTOPPEL, AND DAMAGES
    VDOT contends the mandate rule and judicial estoppel principles limited the circuit
    court’s discretion on remand.
    VDOT asserts that the Supreme Court’s mandate compelled the circuit court, on remand,
    to accept NeSmith’s testimony over Breese’s. Under the “mandate rule,” a “trial judge is bound
    by a decision and mandate from [an appellate court], unless [the court] acted outside [its]
    jurisdiction. A trial court has no discretion to disregard [a] lawful mandate.” Rowe v. Rowe, 
    33 Va. App. 250
    , 257, 
    532 S.E.2d 908
    , 912 (2000).
    [I]t is indisputable that a lower court generally is “bound to carry
    the mandate of the upper court into execution and [may] not
    consider the questions which the mandate laid at rest.” [Sprague v.
    Ticonic Nat’l Bank, 
    307 U.S. 161
    , 168 (1939)]. [The “mandate
    rule”] compels compliance on remand with the dictates of a
    superior court and forecloses relitigation of issues expressly or
    impliedly decided by the appellate court. . . . Thus, when [an
    appellate] court remands for further proceedings, a [lower] court
    must . . . “implement both the letter and spirit of the . . . mandate,
    taking into account [the appellate court’s] opinion and the
    circumstances it embraces.” [United States v. Bell, 
    988 F.2d 247
    ,
    251 (1st Cir. 1993)].
    United States v. Bell, 
    5 F.3d 64
    , 66 (4th Cir. 1993); see also Strayer v. Long, 
    83 Va. 715
    , 717-18,
    
    3 S.E. 372
    , 373-74 (1887).
    The Supreme Court directed that “in computing owned equipment costs, the circuit court
    shall calculate a damage award based upon Blue Book estimates, as testified by expert witnesses,
    which reflect actual costs.” 280 Va. at 427, 
    699 S.E.2d at 517
     (emphasis added). Although
    NeSmith was the expert the Supreme Court referred to as having testified that Blue Book
    estimates “reflect actual costs,” the Supreme Court did not directly or indirectly compel the
    circuit court to use only NeSmith’s testimony to calculate all damages. The remainder of the
    mandate directed merely that “the circuit court shall review the evidence already presented in the
    -9-
    case and calculate damages to which AMEC is entitled” for the various listed claims. 
    Id.
    Therefore, the Supreme Court’s mandate did not require the circuit court to consider only
    NeSmith’s testimony.
    VDOT also claims that the circuit court was required on remand to apply judicial
    estoppel to prevent AMEC from relying on Breese’s rather than NeSmith’s testimony regarding
    damages. “‘Judicial estoppel forbids parties from assuming successive positions in the course of
    a suit, or series of suits, in reference to the same fact or state of facts, which are inconsistent with
    each other, or mutually contradictory.’” Lofton Ridge, LLC v. Norfolk S. Ry. Co., 
    268 Va. 377
    ,
    380-81, 
    601 S.E.2d 648
    , 650 (2004). “The purpose of the doctrine is to prevent a party from
    playing fast and loose with the courts, and to protect the essential integrity of the judicial
    process.” Lowery v. Stovall, 
    92 F.3d 219
    , 223 (4th Cir. 1996) (quoting John S. Clark Co. v.
    Faggert & Frieden, P.C., 
    65 F.3d 26
    , 28-29 (4th Cir. 1995)), cited with approval in Bentley
    Funding Group, L.L.C. v. SK&R Group, L.L.C., 
    269 Va. 315
    , 326-27, 
    609 S.E.2d 49
    , 54-55
    (2005). Whether to apply the doctrine of judicial estoppel lies within the discretion of the trial
    court and will not be set aside absent an abuse of that discretion. Bentley Funding Group, 
    269 Va. at 323-24
    , 
    609 S.E.2d at 53
    .
    Two elements must be present before judicial estoppel may be applied: First, “‘the party
    sought to be estopped must be seeking to adopt a [factual] position that is inconsistent with a
    [factual] stance taken in a prior litigation.’” 
    Id. at 326
    , 
    609 S.E.2d at 54
     (quoting Lowery, 
    92 F.3d at 224
     (citation omitted)). Second, the prior inconsistent position must have been accepted
    by the court, “so that judicial acceptance of an inconsistent position in a later proceeding would
    create the perception that either the first or the second court was misled. Absent success in a
    prior proceeding, a party’s later inconsistent position introduces no risk of inconsistent court
    - 10 -
    determinations, and thus poses little threat to judicial integrity.” 3 
    Id. at 327
    , 
    609 S.E.2d at 55
    (quoting New Hampshire v. Maine, 
    532 U.S. 742
    , 751, 
    121 S. Ct. 1808
    , 1815, 
    149 L. Ed. 2d 968
    ,
    978 (2001)). Stated differently, when applied in the context of a single case, this element
    “‘generally prevents a party from prevailing in one phase of [that] case on an argument and then
    relying on a contradictory argument to prevail in another phase.’” New Hampshire, 
    532 U.S. at 750
    , 
    121 S. Ct. at 1814
    , 
    149 L. Ed. 2d at 977
     (quoting Pegram v. Herdrich, 
    530 U.S. 211
    , 227
    n.8, 
    120 S. Ct. 2143
    , 2153 n.8, 
    147 L. Ed. 2d 164
    , 180 n.8 (2000)).
    Here, on remand, the circuit court found first that AMEC’s position regarding the correct
    calculation of damages on remand was “not inconsistent with its original trial position.” Slip op.
    at 4, 
    2011 Va. Cir. LEXIS 83
    , at *6. It noted that at trial, “AMEC clearly relied on the testimony
    of NeSmith and Bryon Breese when addressing actual costs.” 
    Id.
     The circuit court explained
    further that while it “may have accepted NeSmith’s testimony, AMEC did not offer his
    testimony as the exclusive evidence of damages.” 
    Id.
     As to the second element, the circuit court
    found AMEC’s continued use of the testimony and exhibits of both men did not demonstrate any
    intentional effort to mislead the court and that the Commonwealth did not offer any other
    evidence of an intent to mislead. Id. at 4, 
    2011 Va. Cir. LEXIS 83
    , at *7.
    Applying an abuse of discretion standard as we must, we conclude the evidence supports
    these findings. 4 Viewing the evidence in the light most favorable to the circuit court’s ruling,
    3
    A third element, that the parties must be the same, is met here. See Bentley Funding
    Group, 
    269 Va. at 326
    , 
    609 S.E.2d at 54
    . The Supreme Court has noted a possible fourth
    element: “‘whether the party seeking to assert an inconsistent position would derive an unfair
    advantage or impose an unfair detriment on the opposing party if not estopped.’” 
    Id.
     at 327 n.7,
    
    609 S.E.2d at
    54 n.7 (quoting New Hampshire v. Maine, 
    532 U.S. 742
    , 751, 
    121 S. Ct. 1808
    ,
    1815, 
    149 L. Ed. 2d 968
    , 978 (2001)). However, as in Bentley Funding Group, “[a]n analysis of
    this element is not necessary to resolution of this case,” 
    id.,
     in light of our conclusion, infra in the
    text, that the evidence supports the circuit court’s discretionary conclusion that other elements
    necessary to the application of judicial estoppel were not met.
    4
    We address the court’s erroneous reference to both men as experts infra in Part II.C.
    - 11 -
    NeSmith’s testimony was not independent of Breese’s; NeSmith testified he used Breese’s
    calculations as a base and checked them thoroughly for accuracy before determining the three
    areas in which his calculations regarding damages differed from Breese’s. Also, the same circuit
    court and judge were involved at both stages, placing the circuit court in the best position to
    evaluate whether AMEC’s actions were misleading to the court. Moreover, we hold the policy
    behind the doctrine of judicial estoppel is not implicated here. AMEC did not receive a victory
    when the circuit court accepted NeSmith’s calculation of damages—the lower of the two total
    damages calculations AMEC presented at trial—because the appellate courts reversed numerous
    aspects of that calculation and remanded to the circuit court to address the issue again based on
    the evidence in the record. Thus, AMEC’s actions did not constitute preserving one victory
    while arguing an inconsistent theory to obtain a second, conflicting victory.
    B. LAW OF THE CASE AND DAMAGES
    “The law of the case doctrine provides that ‘where there have been two appeals in the
    same case, between the same parties, and the facts are the same, nothing decided in the first
    appeal can be re-examined on a second appeal.’” Cnty. of Henrico Police v. Medlin, 
    37 Va. App. 756
    , 763, 
    561 S.E.2d 60
    , 63 (2002) (quoting Uninsured Employer’s Fund v. Thrush,
    
    255 Va. 14
    , 18, 
    496 S.E.2d 57
    , 58-59 (1998)). “The doctrine applies only in situations where a
    final determination or ruling has been made without objection.” Torian v. Torian, 
    38 Va. App. 167
    , 175, 
    562 S.E.2d 355
    , 359 (2002) (citing Med. Ctr. Hosps. v. Sharpless, 
    229 Va. 496
    , 498,
    
    331 S.E.2d 405
    , 406 (1985)). 5
    5
    VDOT avers that the question of the proper standard for appellate review of whether the
    law-of-the-case doctrine applies in a particular situation has not been decided by Virginia’s
    appellate courts. It points out that most federal jurisdictions, including the Court of Appeals for
    the Fourth Circuit, apply a de novo standard of review, see, e.g., Volvo Trademark Holding
    Aktiebolaget v. Clark Mach. Co., 
    510 F.3d 474
    , 480 (4th Cir. 2007), but notes that some
    jurisdictions apply an abuse of discretion standard, see, e.g., Giampapa v. Am. Family Mut. Ins.
    - 12 -
    Here, AMEC provided extensive evidence of damages through the testimony and exhibits
    of both NeSmith and Breese. As discussed supra in Part II.A., NeSmith’s testimony was not
    independent of Breese’s. Although the circuit court appears in the first proceeding to have relied
    on NeSmith’s testimony in the areas in which NeSmith’s and Breese’s testimony differed,
    nothing in the record indicates it found Breese’s testimony inaccurate or incredible. On appeal,
    the parties challenged multiple aspects of the circuit court’s damages award. This Court and the
    Supreme Court reversed various aspects of the circuit court’s damages award and remanded to
    the circuit court to “review the evidence already presented in the case and calculate damages to
    which AMEC is entitled” on various listed claims. 280 Va. at 427, 
    699 S.E.2d at 517
    . Nothing
    in the circuit court’s or the appellate courts’ rulings bound the circuit court to rely exclusively on
    NeSmith’s testimony and evidence on remand. Thus, the circuit court’s failure to apply
    law-of-the-case principles on remand was not error.
    C. TESTIMONY OF BRYON BREESE
    VDOT contends the circuit court erred in accepting and relying on opinion testimony
    from Breese over VDOT’s objections. In the evidentiary hearing, AMEC objected to the
    admission of portions of Breese’s testimony on the ground that the testimony involved opinion
    and AMEC had not identified Breese as an expert in advance of trial. The circuit court held that
    Breese, the author of AMEC’s administrative claim, exhibit 487, a document containing facts,
    was qualified to testify about those facts and that it “[did not] see this [as] an expert testimony
    issue.”
    In the original appeal to this Court, VDOT did not assign error to the circuit court’s
    admission of Breese’s testimony. Based on VDOT’s failure to challenge the admission of
    Co., 
    64 P.3d 230
    , 243 (Colo. 2003). We need not resolve this issue because we hold that,
    regardless of the standard applied, the circuit court did not err.
    - 13 -
    Breese’s testimony as improper opinion evidence in the first appeal, that admission has become
    the law of the case, and the circuit court was free to rely on Breese’s testimony as establishing
    the necessary factual basis for some or all of AMEC’s damages claim. Although the circuit court
    erroneously referred to Breese as an expert in its opinion on remand, slip op. at 4, 7, 
    2011 Va. Cir. LEXIS 83
    , at *6-*8, *13, nothing in the record indicates the circuit court relied on Breese’s
    testimony as anything other than factual evidence. Thus, VDOT has failed to prove the circuit
    court committed reversible error.
    D. ACTUAL COSTS FOR PROVING AMEC’S DAMAGES
    VDOT contends the circuit court erred in accepting estimates of costs rather than
    evidence of actual costs as proof of some of AMEC’s damages on remand. It points to VDOT
    specification § 105.16, previously described by this Court as “the general dispute provision, . . .
    which twice states, ‘Only actual costs for materials, labor, and equipment will be considered,’”
    54 Va. App. at 277, 
    699 S.E.2d at 651
     (quoting specification § 105.16). It notes the
    specification’s further requirement that “‘[t]he Contractor shall afford the Engineer every facility
    for keeping an actual cost record of the work. The Contractor and the Engineer shall compare
    records and bring them into agreement at the end of each day.’” Specification § 105.16
    (emphasis added).
    AMEC acknowledges the Supreme Court’s decision recognizing that “the measure of
    damages in this case is actual cost.” 280 Va. at 424, 
    699 S.E.2d at 515
    . AMEC emphasizes,
    however, that the Supreme Court accepted evidence that “Blue Book estimates” for the use of
    owned equipment “reflect actual costs,” id. at 424-25, 
    699 S.E.2d at 515-17
    , and avers that
    estimates are sufficient to prove other aspects of its damages claim, as well.
    The Supreme Court’s instructions were clear that “the measure of damages” is “actual
    costs incurred by AMEC.” 280 Va. at 427, 
    699 S.E.2d at 517
    . To the extent the contract
    - 14 -
    required interpretation beyond this issue, we review the circuit court’s interpretation de novo.
    See, e.g., id. at 418, 
    699 S.E.2d at 511
    .
    “Actual costs,” as defined by this Court in the first appeal, is a term of art; it “includes
    direct costs (like the price of materials and wages of employees) and indirect costs (like home
    office overhead)” and excludes things like “profit margin mark-ups.” 54 Va. App. at 277, 677
    S.E.2d at 652. In defining “actual costs” in the first appeal to this Court, we relied upon the
    holding in Fairfax County Redevelopment & Housing Authority v. Worcester Brothers Co., 
    257 Va. 382
    , 
    514 S.E.2d 147
     (1999). See 54 Va. App. at 277, 677 S.E.2d at 652.
    We conclude the circuit court’s interpretation and application of Fairfax County was
    erroneous. See slip op. at 5-6, 
    2011 Va. Cir. LEXIS 83
    , at *10. In Fairfax County, the Supreme
    Court reviewed the calculation of a unique category of costs, home office overhead, the recovery
    of which is not at issue in this appeal. 6 The Supreme Court provided no indication in its opinion
    in Fairfax County that the parties’ contract required proof of actual costs expended as the
    method for measuring damages; it merely noted that the contractor in fact presented evidence of
    its actual costs to maintain its field office for 98 days beyond the original contract term of 150
    days. Fairfax Cnty., 
    257 Va. at
    385-86 & n.1, 
    514 S.E.2d at
    149 & n.1. The Court noted further
    that “[the contractor’s] accounting system did not allocate its home office expenses to particular
    contracts.” 
    Id. at 386
    , 
    514 S.E.2d at 149
    . However, the contractor’s president calculated
    unabsorbed home office expenses attributable to the delay based on “the total general and
    administrative expenses of the company during the relevant contract period and the application
    of the Eichleay formula to those expenses.” 
    Id.
     at 385-86 & n.2, 
    514 S.E.2d at
    149 & n.2.
    6
    In the first appeal, the Supreme Court affirmed our determination that AMEC failed to
    meet its burden of proof on the home office overhead issue and, thus, that it was not entitled to
    recover for unabsorbed home office overhead expenses. 280 Va. at 421-23, 
    699 S.E.2d at 514
    .
    - 15 -
    The Court described the Eichleay formula as calculating a pro rata share of home office
    expenses attributable to a particular contract, based on the same ratio that the total amount billed
    on that particular contract has to the contractor’s total billings during the contract period. 
    Id.
     at
    389 & n.5, 
    514 S.E.2d at
    151-52 & n.5. Under that formula, once the amount of home office
    expenses attributable to the particular contract is determined, that figure is divided by the total
    number of days of the contractor’s performance under the contract to determine a “daily contract
    home office expense rate.” 
    Id.
     at 389 n.5, 
    514 S.E.2d at
    152 n.5.
    The Court noted the Eichleay method “has been criticized as an inadequate substitute for
    direct evidence of the actual amount of damages and ‘no less speculative’ than other unsupported
    opinion evidence simply ‘because it was cast in a mathematical milieu.’” 
    Id. at 390
    , 
    514 S.E.2d at 152
     (citation omitted). The Court held the question, under standard damages law, was
    “whether the resulting quantum [of damages] was ‘an intelligent and probable estimate’ of the
    actual damages.” 
    Id.
     (quoting Pebble Bldg. Co. v. G. J. Hopkins, Inc., 
    223 Va. 188
    , 191, 
    288 S.E.2d 437
    , 438 (1982)). It concluded on the facts of that case, which included proof that the
    contractor had, in fact, “suffered actual damages as a result of an unreasonable owner-caused
    delay,” that the Eichleay formula was an acceptable method of proving home office expenses
    attributable to the contract and that a more precise measure of damages for unabsorbed home
    office overhead was not required. Id. at 385, 390, 
    514 S.E.2d at 149, 152
    .
    Thus, Fairfax County involved “prorating” a unique ninety-eight-day expense, the total
    amount of which had been proved by actual costs for the ninety-eight days at issue. It did not
    involve, as at least one component of the damages award did here, 7 proving the actual costs
    incurred for a different period and using that period to determine an average daily rate to be
    applied to the ninety-eight days at issue. The Supreme Court’s opinion also contains no
    7
    See infra Part II.E.1 (delay damages related to boulders).
    - 16 -
    indication it involved a contract specification like the one at issue here, which provides in
    relevant part as follows:
    [Specification §] 105.16—Submission and Disposition of Claims.
    *       *       *       *            *   *     *
    At the time of occurrence or prior to beginning the work, the
    Contractor shall furnish the Engineer an itemized list of materials,
    equipment, and labor for which additional compensation will be
    claimed. Only actual costs for materials, labor, and equipment will
    be considered. The Contractor shall afford the Engineer every
    facility for keeping an actual cost record of the work. The
    Contractor and Engineer shall compare records and bring them into
    agreement at the end of each day. Failure on the part of the
    Contractor to afford the Engineer proper facilities for keeping a
    record of actual costs will constitute a waiver of a claim for such
    extra compensation except to the extent that it is substantiated by
    the Department’s records. . . .
    Requiring the submission of actual cost data “ensur[es] that the final amount of the . . .
    adjustment will not be a windfall for either the government or the contractor.” Steven W.
    Feldman, Government Contract Guidebook § 17:9 (4th ed. 2011-2012). Under federal
    government contracts law,
    Where it is impractical for a contractor to prove its actual costs
    because it failed to keep accurate records, when such records could
    have been kept, and where the contractor does not provide a
    legitimate reason for its failure to keep the records, [other methods
    of calculating the amount for adjustment are] not available to the
    contractor.
    Id.
    We hold that, although, as the circuit court observed, general contract principles provide
    damages may be proved with reasonable certainty, including averages and estimates, “unless the
    contract clearly requires another standard,” slip op. at 5, 
    2011 Va. Cir. LEXIS 83
    , at *9, the
    contract at issue here expressly requires “an actual cost record of the work,” which includes “an
    itemized list of materials, equipment, and labor” and “actual cost” for those items. Specification
    - 17 -
    § 105.16 (emphasis added). The Supreme Court held, based on expert testimony in this case,
    that estimates of experts based on the Blue Book may be used to establish actual costs for the use
    of owned equipment, see 280 Va. at 425, 
    699 S.E.2d at 516
    , but we are aware of no expert
    testimony in the record which would permit AMEC to prove any other category of actual costs
    with mere estimates of those figures under the contract specification at issue here. 8 The circuit
    court concluded the delay figures were more than estimates; they were averages “based on
    composite values of costs incurred” and, thus, provided a reasonable approximation of AMEC’s
    damages. Slip op. at 7, 
    2011 Va. Cir. LEXIS 83
    , at *13. We reach a contrary conclusion with
    regard to some of the damages calculations on the facts of this case. We hold that allowing
    AMEC to prove some of its damages using a daily job site overhead rate calculated by averaging
    actual costs over a period of two years deprived VDOT of its contractual right to pay damages
    based on actual costs. Compare Fairfax Cnty., 
    257 Va. at
    385-86 & n.1, 
    514 S.E.2d at
    149 & n.1
    (decided under a contract of shorter duration, 150 days, coupled with a delay of 98 days, and
    which did not include evidence that an actual cost provision was involved). Cf. In re Daystrom
    Instr. Div. of Daystrom, Inc., 58-2 B.C.A. (CCH) ¶ 2050 (Armed Servs. Bd. of Cont. Apps. Dec.
    23, 1958), available at 1958 ASBCA LEXIS 1166, at *35-*39 (where contract required
    calculation of general and administrative expenses in six-month increments, holding the
    averaging of monthly costs over the forty-five-month contract period was “not considered
    8
    NeSmith was asked if he had “any opinions as to that methodology of taking a duration
    of sight [sic] overhead, reducing it to a daily rate, and then applying it to the number of days of
    delay.” He responded, “I think it’s appropriate and it’s a process I’ve utilized on many
    occasions.” However, when NeSmith was asked about the application of the “actual cost”
    specification to his calculation of damages, he testified “[he] inquired and was . . . instructed by
    counsel to use the force account [specification (§ 109.05) instead], and that’s what [he] did.” In
    the first appeal, the Supreme Court held the force account specification did not apply and that
    actual costs were to be used. 280 Va. at 420-21, 
    699 S.E.2d at 513-14
    . Thus, no expert
    testimony established that using an average daily rate calculated from data outside the delay
    period was an accepted method of determining actual costs.
    - 18 -
    equitable or in accordance with generally accepted accounting principles and practices,” “would
    create a distortion[,] and would not reflect ‘actual costs’”); SER-Jobs for Progress, Inc., 84-1
    B.C.A. (CCH) ¶ 17,159 (Dep’t of Lab. Bd. of Cont. Apps. Feb. 4, 1984), available at 1984 DOL
    BCA LEXIS 26, at *14-*15 (“[T]he fact that [the contract limited] appellant . . . in its
    expenditures [for contract modifications] to a maximum of one-twelfth of the total estimated cost
    for the last month of the original contract term does not justify the use of average monthly costs
    in pricing the actual cost of the one-month extension.” (emphases added) (decided under the
    federal Contract Disputes Act of 1978)). The record revealed that these job site overhead figures
    contained large variations in monthly totals. Management staff figures, for instance, varied from
    a monthly low of about $50,000 to a high of about $80,000; other monthly fixed costs varied
    approximately $90,000 to approximately $200,000. The monthly expense of outside rented
    equipment varied from about $4,000 to about $43,500. The highest monthly job site overhead
    total was almost 28% higher than the lowest monthly total. Further, the total of the highest
    monthly job site overhead costs from each category was over 50% higher than the total of the
    lowest monthly overhead costs from each category. Finally, the job site overhead average for the
    winter months of 2003 to 2004 was 20% higher than the lowest month during the two-year
    period, further illustrating how using a monthly average including such months could inflate the
    damages above actual costs.
    Because of this wide variation in monthly figures, we hold that, where proof of actual
    costs is expressly required by the parties’ contract and the record establishes the plaintiff
    maintained those figures on at least a monthly basis, the defendant is entitled to have those
    monthly amounts proved without averages calculated based on wholly different months, absent
    expert testimony or inferences therefrom, accepted by the fact finder, that averaging data from
    different months outside the damages period is an accurate method of calculating actual costs.
    - 19 -
    Here, AMEC had ample opportunity to keep records of actual cost figures, and the record
    indicates it did so. 9 To the extent AMEC failed to introduce evidence of all necessary monthly
    totals at trial, the express language of the contract and the Supreme Court’s instructions on
    remand bar AMEC from recovering any categories of damages for which its evidence to prove
    actual costs is insufficient. See Orlosky Inc. v. United States, 
    68 Fed. Cl. 296
    , 319, 321 n.18
    (2005) (“Plaintiff[] . . . could have submitted . . . actual cost information on its damages. . . .
    [A]ny failures of damage proof were not due to the inexactness of the situation, but, rather,
    plaintiff’s own failure to produce reliable information. Such failure cannot be used as
    justification ‘for lessening the burden of proof.’” (quoting S.W. Elec. & Mfg. Corp. v. United
    States, 
    655 F.2d 1078
    , 1088 (Ct. Cl. 1981))).
    Thus, to the extent the circuit court relied upon a daily average figure to calculate job site
    overhead damages, we hold it erred. We remand to the circuit court, as discussed infra in Part
    II.E., to recalculate the affected components of its damages award based on actual costs, rather
    than an average daily rate, to the extent the record contains sufficient data to permit it to do so.
    We note that the Supreme Court has approved prorating, as opposed to averaging, see Fairfax
    Cnty., 
    257 Va. at 389-90
    , 
    514 S.E.2d at 151-52
    , and instruct the circuit court, where prorating is
    necessary, to use the smallest inclusive period for which data is available. 10
    9
    Although the record showed deficiencies in recordkeeping related to owned equipment,
    the Supreme Court held that Blue Book rates constituted proof of actual costs for that component
    of damages.
    10
    By prorating, we mean calculating actual costs for a defined period of time and, using a
    method akin to the Eichleay formula, dividing the resulting figure to determine the pro rata
    portion of the overall total that may fairly be attributed to a lesser number of days fully within
    that period. In proscribing mere averaging, as distinguished from prorating, we mean to prohibit
    using a method which calculates actual costs for a defined period of time and divides that figure
    to obtain a daily rate which is then used to estimate costs for a wholly different period of time
    outside the defined period.
    - 20 -
    E. CHALLENGES TO SPECIFIC COMPONENTS OF THE DAMAGES AWARD
    1. Delay Damages for Bridge Boulders
    At trial, AMEC claimed it sustained delay damages in the construction of bridge 640 due
    to two sources. First, it claimed delay due to “differing site conditions,” in the form of boulders
    discovered at the worksite. Second, it claimed delay from problems related to the drilled shafts
    for the bridge. The circuit court awarded a general verdict for all claimed damages based on a
    combined forty-day delay from both causes.
    In the first appeal, we concluded AMEC failed to provide VDOT with proper notice of
    the drilled shaft claims and held those claims were barred. 54 Va. App. at 252-58, 677 S.E.2d at
    639-42. We noted VDOT, on appeal, did not challenge its liability for damages attributable to
    the unexpected presence of the boulders but contended the evidence, viewed in the light most
    favorable to AMEC, “proved no more than 8 days of delay attributable to boulders.” Id. at 269,
    677 S.E.2d at 647-48. We held we were unable to “resolve this dispute on appeal given the
    inseverable nature of the circuit court’s general verdict” and “remand[ed] the boulders claim to
    the circuit court with instructions to examine the evidentiary record and to make specific factual
    findings.” Id. at 269, 677 S.E.2d at 648. The Supreme Court noted our remand to the circuit
    court for the purpose of evaluating AMEC’s claim for delay damages resulting from the boulders
    was not challenged on appeal, and it reminded the circuit court “to review the record and make
    findings on whether AMEC proved its entitlement to damages resulting from the boulders at
    bridge B640.” 280 Va. at 427, 
    699 S.E.2d at 517
    . On remand, the circuit court found “that
    AMEC [was] entitled to recover for the entire forty-day period in which the primary cause of the
    delay was the boulders.” Slip op. at 23, 
    2011 Va. Cir. LEXIS 83
    , at *45.
    We hold the evidence, viewed in the light most favorable to AMEC, is insufficient to
    support the award for the entire forty-day period. The record reflects that Jack Palmer was asked
    - 21 -
    whether he had “an understanding as to what the[] unforeseen site conditions were” that caused
    AMEC to be “‘40 working days behind schedule.’” In the portion of the transcript relied upon
    by the circuit court, Palmer replied, “Yeah. They’re speaking about the boulders there, speaking
    about the drilled shafts, but primarily about the boulders I believe.”
    As we noted in the first appeal, “‘[w]here there is evidence of damages from several
    causes, for a portion of which a defendant cannot be held liable, a plaintiff must present evidence
    that will show within a reasonable degree of certainty the share of damages for which that
    defendant is responsible.’” 54 Va. App. at 269-70, 677 S.E.2d at 648 (quoting TechDyn Sys.
    Corp. v. Whittaker Corp., 
    245 Va. 291
    , 296, 
    427 S.E.2d 334
    , 337 (1993)). “[R]easonable
    certainty” does not require proof of “the exact sum . . . lost” “with mathematical precision”; it
    requires “evidence of sufficient facts or circumstances to permit at least an intelligent and
    probable estimate thereof.” Gwaltney v. Reed, 
    196 Va. 505
    , 507, 
    84 S.E.2d 501
    , 502 (1954).
    The evidence relied upon by the circuit court to award AMEC damages for the entire
    forty-day delay was the testimony of Palmer that the delay was “primarily about the boulders I
    believe.” (Emphasis added). We hold this evidence was insufficient “to permit at least an
    intelligent and probable estimate” of the damages causally related to the boulder problem. The
    only other evidence upon which AMEC relies to support this ruling is the testimony of AMEC
    Project Manager Loch Louman that the presence of the boulders made the work “very difficult.”
    Thus, the evidence was sufficient to prove only an eight-day delay, as VDOT’s inspector
    expressly testified and his daily reports reflected. Although the evidence supported a general
    finding that AMEC’s damages were greater, AMEC failed to meet its burden of proof by
    offering specific evidence to establish by how much.
    Thus, we remand to the circuit court to calculate damages, in the form of actual costs as
    set out in Part II.D., for these eight days of delay— March 14, 15, and 26, 2001, and April 5, 6,
    - 22 -
    9, 11, and 30, 2001. 11 We note the method used by the circuit court to calculate an average daily
    rate multiplier for the boulder delay claim does not comply with our instructions in Part II.D.
    The circuit court calculated the delay damages caused by the boulders using Breese’s “Total
    Delay Costs” figure to determine its own “average daily rate” of $22,262 “for the entire 586-day
    period” of delay. Slip op. at 23, 
    2011 Va. Cir. LEXIS 83
    , at *46. A careful examination of
    Breese’s exhibit indicates that he obtained these “Total Delay Costs” by adding all monthly job
    site expenses in six categories (management staff, office support staff, monthly fixed costs,
    AMEC owned support equipment, AMEC owned production equipment, and outside rented
    equipment) for the period of December 2002 to November 2004. Breese divided each total by
    the number of days within that period to obtain an “AVG. DIRECT COST PER DAY” for each
    category. He then transferred the daily averages to a summary sheet, added home office
    overhead, and calculated an eight percent markup for each category. He provided various
    credits, added the totals for all categories, and calculated a total delay cost for 586 days of delay,
    from which the circuit court derived its average daily rate of $22,262.
    In addition to improperly including the disallowed component of home office overhead,
    this daily average delay rate calculated from costs incurred from December 2002 to November
    2004, including two winter periods, neither proves actual costs nor provides a reasonable
    estimate of actual costs for various days in March and April of 2001, a period over eighteen
    months earlier when acceleration efforts may not yet have been underway, and comprising over
    60% non-winter dates. We note the appendix is almost five thousand pages and the record
    substantially larger, and we have no duty to “‘search the record . . . in order to interpret the
    11
    VDOT contends on brief that AMEC has failed to identify which eight days of the
    forty were clearly attributable to the presence of the boulders. However, which eight days were
    impacted is clearly indicated in the daily inspector’s reports of VDOT employee Frederick
    Bingham.
    - 23 -
    [AMEC’s] contention’” that it contains actual cost figures for this time period. See Mason v.
    Commonwealth, 
    49 Va. App. 39
    , 46 n.2, 
    636 S.E.2d 480
    , 483 n.2 (2006) (quoting Buchanan v.
    Buchanan, 
    14 Va. App. 53
    , 56, 
    415 S.E.2d 237
    , 239 (1992)). On remand, in order to recover,
    AMEC must direct the circuit court to evidence in the record permitting at least a reasonable
    estimate of its actual job site overhead costs, including any appropriate credits, for the eight 2001
    dates at issue.
    2. Delay Damages for the First Winter Period
    The original contract term called for completion of the project in November 2003. 54
    Va. App. at 247, 261, 677 S.E.2d at 636, 643. By March 2003, however, it had become apparent
    to AMEC that, due to various delays for which VDOT had already granted it extensions, an
    additional extension would be required which would include the winter of 2003 to 2004, id. at
    262, 677 S.E.2d at 644, defined by specification § 108.09 of the contract as “the period between
    November 30 of one year and April 1 of the following year,” 54 Va. App. at 261, 667 S.E.2d at
    644. Thus, in March 2003, AMEC provided VDOT with written notice of its intent to claim
    damages for the extension from November 1, 2003, to April 1, 2004. Id. Ultimately, work
    continued through the winter of 2004 to 2005, as well, and was completed in June 2005.
    When AMEC later filed suit, it alleged that it not only continued to work during the
    winter periods, but that it also used additional equipment and materials and that it “extended
    shifts and overtime in an effort to escalate performance to mitigate [VDOT’s] delays.” It alleged
    further that it “incurred further inefficiency costs as a result of the required increase in
    manpower.”
    The circuit court included in its general verdict AMEC’s request for an award of damages
    sustained during both the winter of 2003-2004 (the first winter period) and the winter of
    - 24 -
    2004-2005 (the second winter period). VDOT challenged these awards on appeal. We held as
    follows:
    [W]e cannot determine how much, if any, of the damage award is
    attributable to either or both of the additional winter periods. . . .
    [E]ven when a government contract authorizes recovery of
    damages for winter weather, the “contractor must demonstrate --
    through contemporaneous records if possible -- the extent of the
    adverse weather and its impact on critical activities.” We direct
    the circuit court on remand to review the evidentiary record and to
    make specific findings on whether AMEC proved any entitlement
    to damages for conditions during either or both of the two
    additional winter periods. If the court finds in AMEC’s favor, the
    court should identify the contractual basis for the award and make
    factual findings as to the specific damages awarded.
    54 Va. App. at 268-69, 677 S.E.2d at 647 (quoting Steven W. Feldman, Government Contract
    Guidebook § 29:7, at 821 (4th ed. 2008-09) (covering federal government contracts)).
    On review, the Supreme Court noted that our remand to the circuit court for the purpose
    of evaluating AMEC’s claim for damages for either or both of the winter periods was not
    challenged before it, and it reminded the circuit court, “if it finds in favor of AMEC [on remand],
    [to] identify the contractual basis of such award and make factual findings as to any damages
    awarded.” 280 Va. at 427, 
    699 S.E.2d at 517
    .
    The circuit court, on remand, disallowed recovery for the second winter period but held
    AMEC was “entitled to recover for the full 121 days” of the first winter period. In doing so, it
    noted contract specifications §§ 104.03 and 108.09 “provide[] that if there is a differing site
    condition, and such differing site condition extends the working period into the winter period,
    and working conditions during the winter period are not suitable, a contractor may recover.”
    Slip op. at 17-20, 
    2011 Va. Cir. LEXIS 83
    , at *34-*39. The court found a contract extension
    required due to high water pushed the contract period into the 2003-2004 winter period and made
    the following additional findings:
    - 25 -
    Although no single standard dictates whether “working
    conditions . . . are unsuitable [under § 108.09],” Breese testified
    that “the ambient air temperature inside the form has to be a certain
    temperature before you can place concrete” and that the rebar and
    forms must also be a certain temperature. He explained that
    “[c]oncrete costs more to pour in the winter” because AMEC had
    to “maintain the concrete temperature, the surface temperature of
    the concrete to 50 degrees for a period of seven days.” These
    items and tasks—concrete blankets, buying propane, heating
    supplies—are not a concern in the spring, summer, and fall.
    AMEC is seeking recovery for the full 121 days of the first
    winter period. The raw weather data for Clarksville, Virginia [as
    shown in exhibit 1149B], provides ample support for this recovery,
    as the data shows that the temperature failed to reach 50 degrees
    Fahrenheit for roughly one third of the first winter period. Also,
    nearly half of the days during the first winter period experienced
    temperatures below freezing. During this time, AMEC’s receipts
    show a significant number of purchases for materials to
    compensate for the cold weather. For example, AMEC itemizes
    winter construction tools such as concrete curing blankets, propane
    radiant heaters, thermometers, and various heater supplies.
    Because both a contractual basis and a factual basis exist for
    AMEC’s claim for compensation during the first winter period,
    AMEC is entitled to recover for the full 121 days.
    *      *       *       *            *   *     *
    [Using AMEC’s exhibit 487,] [t]he Court calculates actual
    jobsite overhead costs in the amount of $3,107,305.26. After
    adding the actual jobsite overhead costs, lost productivity, markup,
    and additional curing costs, the Court will award AMEC
    $3,236,784 in damages for the first winter period, as detailed in the
    chart below[, containing a month-by-month breakdown of the
    totals listed supra].
    Slip op. at 18-19, 
    2011 Va. Cir. LEXIS 83
    , at *34-*37 (citations omitted) (footnote omitted).
    The circuit court then reproduced the figures from Breese’s exhibit 487 which showed actual
    monthly totals for job site overhead for the months of December 2003 through March 2004. 
    Id.
    VDOT argues AMEC failed to prove entitlement to compensation for the full winter
    period because it did not “show[] the actual impact of weather on its work activities” or,
    alternatively, that it “prove[d] only six days of actual impact,” based on the number of days when
    - 26 -
    weather required a complete cessation of work. It contends further that AMEC has not proved
    its actual costs for either the full 121 days or the six days of actual work stoppage.
    Per the language of specification § 108.09, when a delay “extends the contract time limit
    into the period between November 30 of one year and April 1 of the following year,”
    “consideration may be given to granting an extension of time” if “working conditions during
    such period are unsuitable for the completion of the work.” If the conditions cause an increase in
    the time required for the performance of any work under the contract, the contractor may be
    entitled to “an adjustment, excluding anticipated profits.” Specification § 104.03; see also
    Federal Acquisition Regulation (FAR) 52.242-14 (codified at 
    48 C.F.R. § 52.242-14
    ) (allowing
    for a similar recovery for federal contractors under language providing that “an adjustment shall
    be made for any increase in the cost of performance of this contract (excluding profit)”). We
    expressly held in the first appeal that a government contractor seeking damages for winter
    weather “must demonstrate – through contemporaneous records if possible – the extent of the
    adverse weather and its impact on critical activities.” 54 Va. App. at 268-69, 677 S.E.2d at 647
    (citing Feldman, supra, § 29:7, at 821 (4th ed. 2008-09)). The language of the contract itself
    supports this result: Although the contract does not contain a specific standard for determining
    when damages may be available for winter work, we hold the § 108.09 standard for issuing an
    extension applies and that an entitlement to recover damages for winter weather requires proof
    that “working conditions during such period are unsuitable for the completion of the work.”
    To recover damages during a winter period, a contractor need not prove it was wholly
    unable to work. See Feldman, supra, § 29:7, at 850-51 (4th ed. 2011-2012). It need prove only
    that weather conditions caused it to incur additional costs in performing under the contract. Id.
    Costs recoverable during a winter period, in addition to those available as a result of any delay
    that extends the contract period—i.e., unabsorbed home office overhead and work site overhead,
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    base costs for labor and materials, and insurance and bond premiums—include idle time for
    equipment during periods of work stoppage and any increase in labor, materials or other costs
    required to perform in the adverse weather conditions, including reductions in productivity. Id.
    at 849-51.
    Applying these principles in the instant case, we hold the evidence was sufficient to
    support the circuit court’s ruling that AMEC was entitled to recover damages for the entire 121
    days of the first winter period. The evidence, viewed in the light most favorable to AMEC,
    established that bridge 616 was the largest structure on the project and demanded the majority of
    the project resources. It was the portion of the project requiring the longest path to completion
    and, thus, working on it was “a critical path activity” which impacted the project completion
    date. Elevated water levels in the first part of 2003 required the suspension of the majority of
    critical path activities on bridge 616 during that time. As a result, the project was not completed
    by November 1, 2003, as scheduled, and AMEC was required to work through the winter period.
    Critical path work necessarily included bridge 616, and the daily reports completed by VDOT
    Inspector Frederick Bingham confirm that AMEC’s work throughout the first winter period
    involved drilling holes, setting casings and foundation cap forms, and pouring concrete to create
    shafts and caps to support the various piers comprising bridge 616. The records show nearly half
    the days during the first winter period experienced temperatures at or below freezing. Further,
    the records reveal not a single span of time during that period in which the low temperature was
    50 degrees or higher for seven successive days as required to allow the concrete to cure naturally
    without additional supplies or labor. The cold weather caused AMEC to incur additional costs in
    the form of supplies to keep the concrete warm and labor to put the supplies in place. The
    evidence also established AMEC rented and purchased additional forming supplies so workers
    could construct more shafts and caps simultaneously.
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    Finally, Breese testified the winter costs contained in exhibit 487 were recorded,
    “[s]imilar to everything else, directly from the detailed transaction report, review of the invoices
    that we received on the job.” Breese also calculated a loss of productivity factor of 10% “based
    heavily on [his] experiences on the job” and in consultation with AMEC employees Grant
    Ralston and Jack Palmer. NeSmith compared Breese’s loss of productivity percentage to ones in
    treatises, found them to be reasonable, and used the same percentage himself. Wenick testified
    “if you’re out there working in the winter, it’s most likely that there’s going to be a lessened
    productivity.” After reviewing the daily logs, Wenick confirmed there were “substantial delays
    particularly in the 2003-2004 winter period” which negatively impacted AMEC’s ability “to do
    critical path work.”
    Although AMEC may have failed to introduce records of its own articulating precisely
    how weather conditions impacted critical activities on a daily basis, the record nevertheless
    contains evidence sufficient to support the circuit court’s finding that the documented
    temperatures throughout the period at issue impaired AMEC’s ability to prepare the massive
    concrete substructure for bridge 616. This award does not result in a windfall to AMEC, for the
    winter delay damages are neither liquidated nor based on an average daily job site overhead rate.
    The record contains actual cost data for the four months of overhead delay damages and
    indicates the circuit court relied on this data. Slip op. at 17-18, 
    2011 Va. Cir. LEXIS 83
    , at
    *36-*37. The circuit court calculated its award of damages from Breese’s exhibit 487, which
    sets out monthly figures from December 2002 to November 2004 for job site overhead, with
    appropriate deductions for profits and home office overhead as ordered by the appellate
    decisions.
    However, we hold that by using Breese’s actual cost figures for these four months, the
    circuit court failed to factor in Breese’s equipment credits, which he applied only after
    - 29 -
    calculating the average daily rate we have rejected. On remand, the court should apply any
    appropriate credits for the four months at issue if they are discernible from the record. 12
    We also direct the circuit court to reexamine the figures for lost productivity and markup.
    We are unable to discern how the lost productivity figure was calculated. We also agree with
    VDOT’s argument that the circuit court improperly included a “markup” figure of 47% on the
    loss of production figure, a markup the circuit court applied to other lost productivity
    calculations, as well. The circuit court analyzed the question of the proper markup percentage as
    follows in order to reflect actual costs as required by the Supreme Court’s ruling:
    Both parties utilize the testimony of Peter Wade, VDOT’s expert,
    for the proper markup percentage. AMEC adopted the testimony
    of Wade to reach a 47% markup. VDOT argues AMEC should
    receive only a 39% markup, because Wade testified that his
    estimate included an 8% figure for “margin in the bid.” The
    Supreme Court held the “[appropriate] adjustment to the contract”
    does not include profits. AMEC Civil, 280 Va. at 421[, 
    699 S.E.2d at 513-14
    ]. VDOT asks the Court to find that “margin in the bid”
    means only profit but offers little support for such an
    interpretation. AMEC argues “margin in the bid” includes more
    than just profit.
    Expert testimony does not resolve the issue. Wade’s
    testimony provides for a range of 47% to 59%. A 59% markup
    would allow AMEC to recover disallowed profits. VDOT’s
    request for a 39% markup would necessarily exclude recoverable
    costs. Thus, the Court will use a 47% markup to prevent the
    recovery of disallowed profits or the denial of recoverable costs.
    Slip op. at 10, 
    2011 Va. Cir. LEXIS 83
    , at *20-*21 (citations omitted).
    Viewing Wade’s testimony in the light most favorable to AMEC, “margin in the bid”
    includes more than just profit, such that the 8% markup or margin included in Wade’s 47%
    figure comprises both profit, which is not recoverable, and an unidentified component in an
    unknown percentage, which may be recoverable. Based on AMEC’s duty to prove its damages
    12
    The credits, like the costs, may be prorated but not averaged. If these amounts are not
    discernible from the record, AMEC would be entitled to recover actual costs for all categories of
    overhead expenses incurred except those against which the credits are due.
    - 30 -
    with reasonable certainty, we hold the circuit court erred in concluding AMEC is entitled to the
    8% markup in addition to the 39% because it is undisputed that a portion of that 8% is
    disallowed profit and AMEC failed to meet its burden of proving what percentage is not profit.
    Thus, the proper markup amount to be applied to the “loss of productivity” claims on remand is
    39%. 13
    3. Delay Damages for High Water
    The circuit court found AMEC was entitled to damages for 237 days of delay between
    March and October of 2003 and 60 days between April and June of 2004. As argued by AMEC,
    the court used the chart in Breese’s exhibit 487, titled “Clarksville Overhead Recap,” the same
    chart Breese used to calculate an average daily overhead delay rate. The chart included
    compilations of actual monthly costs for categories comprising job site overhead—management
    staff, office support staff, monthly fixed costs, AMEC-owned support equipment, AMEC-owned
    production equipment, and outside rented equipment for each month from December 2002 to
    November 2004.
    Using Breese’s chart, the court totaled his calculations of job site overhead costs for
    March to October of 2003, a period of 245 days. Slip op. at 15-16, 
    2011 Va. Cir. LEXIS 83
    , at
    *30-*31. It then prorated that total to the claimed period of 237 days, resulting in a figure of
    $5,692,861. Using the same method, the court totaled job site overhead costs for April to June of
    2004, a period of 91 days. It then prorated the total to the claimed period of 60 days, resulting in
    a figure of $1,575,213.21. 
    Id.
    VDOT challenges these calculations on appeal, contending the circuit court erred in both
    the number of days and the amount of damages it calculated.
    13
    The circuit court properly included no markup on the additional curing costs.
    - 31 -
    The evidence, viewed in the light most favorable to AMEC, supports the circuit court’s
    findings concerning the number of days of delay. Just as with the winter weather, see supra Part
    II.E.2., elevated lake levels adversely impacted AMEC’s ability to work on bridge 616, severely
    limiting the workers’ ability to access the lake to complete the foundation caps, columns, and
    other critical path work. Louis Wenick, an engineering consultant who testified for AMEC as an
    expert in construction scheduling and delay analysis, examined the project records. He noted
    VDOT had granted an extension of 185 days in 2003 due to elevated lake levels and opined,
    based on project records and impact of the delay on critical path work, VDOT should have
    granted 52 more during that period of time, for a total of 237 days. AMEC, through Wenick,
    also presented evidence of 60 additional days of delay due to high water between April 10 and
    July 10, 2004. This evidence supports the circuit court’s award of damages for 297 days of delay
    due to high water.
    VDOT also objects to the use and proration of Breese’s monthly job site overhead data to
    calculate extended overhead damages and argues that NeSmith’s figures, which were based on
    his calculation of an average daily job site delay rate, are no better. Thus, VDOT contends
    AMEC has failed to present any evidence proving the actual costs of the extended delay damages
    caused by high water. Without actual daily costs, VDOT contends AMEC may not recover
    extended overhead damages.
    As discussed supra in Part II.D., we hold the circuit court did not err because prorating
    the actual costs incurred provided a reasonable estimate of AMEC’s damages. However, as
    discussed supra in Part II.E.2., we hold that by using Breese’s actual cost figures for these
    months, the circuit court failed to factor in Breese’s equipment credits, which he applied only
    - 32 -
    after calculating the average daily rate we have rejected. On remand, the circuit court should
    apply any appropriate credits for the months at issue if they are discernible from the record. 14
    4. Acceleration Damages
    AMEC sought acceleration damages for three time periods, the temporal boundaries of
    which were determined by the impact of high water on the project—January 1, 2002, to February
    22, 2003 (before impact of high water); February 23, 2003, to August 21, 2004 (during impact);
    and August 22, 2004, to June 11, 2005 (after impact). Calculating those damages involved
    totaling costs associated with lost production and additional premium labor costs. 15 AMEC
    presented evidence of the total actual costs for each period.
    The Supreme Court, based on contractual notice requirements, ruled AMEC is entitled to
    recover only those acceleration damages incurred after April 2004. 280 Va. at 412-13, 
    699 S.E.2d at 508-09
    . Thus, it is undisputed that AMEC is entitled to acceleration damages, subject
    to meeting its burden of proving amount, for a portion of the second period, from May 1, 2004,
    to August 21, 2004, and for the entirety of the third period, August 22, 2004, to June 11, 2005.
    The circuit court prorated the second period, dividing the number of days in the second period
    which fell within the allowable recovery period (113) by the total number of days in the entire
    second period (546), concluding those “113 days account for roughly 20.7% of the second
    period.” The circuit court awarded AMEC 20.7% of the damages claimed for the second period
    14
    See supra note 12.
    15
    Calculating acceleration damages also required the circuit court to analyze the
    additional labor and material costs relating to use of the second foundation cap form. See slip
    op. at 11-13, 
    2011 Va. Cir. LEXIS 83
    , at *22-*27. VDOT discusses these calculations on brief
    and agrees with each of the calculations the circuit court made. Thus, we need not consider these
    calculations on appeal.
    - 33 -
    in Breese’s exhibit 487. The circuit court noted AMEC is entitled to recover for 100% of the
    time in the third period. 16
    VDOT contends that the circuit court erred in awarding AMEC 20.7% of the damages
    claimed for the second period in Breese’s exhibit 487. VDOT contends AMEC was required to
    prove actual labor costs for the dates at issue and that proration is not permitted. VDOT
    contends the record does not contain cost data from which actual straight time and overtime
    labor costs for the specific 113 days at issue during the second period could be calculated.
    As discussed supra in Part II.D., we hold the circuit court did not err because prorating
    the actual costs incurred provided a reasonable estimate of AMEC’s damages.
    5. Damages Related To Bridge 616, Pier 18
    Due to an error in the plans, AMEC was required to perform additional work on pier 18
    of bridge 616. AMEC requested damages of $11,303 based on Breese’s exhibit 487, which it
    contended represented “actual costs for direct labor and burden.” VDOT calculated that AMEC
    was entitled to the slightly greater sum of $11,375 in damages for this error. The circuit court
    was unable to determine how AMEC calculated the damages figure it requested, and the circuit
    court calculated its own damages in the higher amount of $11,327.38. However, because AMEC
    requested only $11,303, the circuit court awarded only that amount. VDOT contends that even
    though the amount of damages awarded was “in VDOT’s favor, [it is] still error for disregarding
    NeSmith’s work and should be reversed.” Because the circuit court awarded less than VDOT
    admitted it owed on this claim, we find it unnecessary to reach VDOT’s underlying evidentiary
    challenge and do not disturb this portion of the damages award.
    16
    The circuit court also awarded a 47% labor burden markup. We hold, as discussed
    supra, in Part II.E.2., that this figure should be 39% of actual costs awarded.
    - 34 -
    F.
    ASSIGNMENT OF CROSS-ERROR: POST-JUDGMENT INTEREST
    AMEC contends the circuit court erred in refusing its request for post-judgment interest.
    We hold AMEC waived its right to assert this claim under either of two theories.
    In the original proceeding in the circuit court, AMEC expressly sought only pre-judgment
    interest. It made no request for post-judgment interest. We hold that AMEC, by failing to make
    this request in the circuit court as part of the first proceeding, waived its right to do so. See
    generally Irwin v. Irwin, 
    47 Va. App. 287
    , 298, 
    623 S.E.2d 438
    , 443-44 (2005) (holding that the
    wife waived her right to receive more relief than she expressly requested).
    Alternatively, we conclude AMEC’s claim for post-judgment interest is barred because it
    was ruled upon and denied and AMEC failed to challenge that denial on appeal. AMEC’s
    amended complaint sought damages, “prejudgment interest,” and “such other and further relief
    as this Court deems appropriate.” AMEC’s proposed conclusions did not indicate an intent to
    limit its request to pre-judgment interest. Finally, the circuit court, in its July 16, 2008 order,
    directed “that judgment should be entered against Defendant in the sum of $21,181,941.00
    without interest or attorneys’ fees.” The court did not limit its ruling to pre-judgment interest.
    By exceptions filed July 18, 2008, AMEC excepted to the circuit court’s determination that it
    was “not entitled to interest or attorneys’ fees as a part of the judgment against Defendant” and
    the court’s statement “that it did not award interest on the judgment because it could find no
    authority giving it jurisdiction to do so.” Thus, AMEC took exception to the court’s refusal to
    award any interest and did not limit its exception to pre-judgment interest. In the first appeal to
    this Court, however, AMEC addressed only its claim for pre-judgment interest. The Court of
    Appeals and Supreme Court also addressed only the issue of pre-judgment interest. The Court of
    - 35 -
    Appeals expressly did not address the issue of post-judgment interest, 54 Va. App. at 281, 677
    S.E.2d at 653, and AMEC did not assign error to this failure.
    “‘Under [the] law of the case doctrine, a legal decision made at one [stage] of the
    litigation, unchallenged in a subsequent appeal when the opportunity to do so existed, becomes
    the law of the case for future stages of the same litigation, and the parties are deemed to have
    waived the right to challenge that decision at a later time.’” Kondaurov v. Kerdasha, 
    271 Va. 646
    , 658, 
    629 S.E.2d 181
    , 188 (2006) (quoting Va. Vermiculite, Ltd. v. W.R. Grace & Co., 
    108 F. Supp. 2d 549
    , 609 (W.D. Va. 2000)). Thus, the circuit court’s entry of judgment “without
    interest or attorneys’ fees” in the July 18, 2008 order constitutes the law of the case and is
    applicable in this second appeal to bar AMEC’s claim for post-judgment interest.
    III.
    For these reasons, we affirm in part, reverse in part, and remand to the circuit court for a
    recalculation of damages consistent with this opinion.
    Affirmed in part,
    reversed in part,
    and remanded.
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