13 Cl. Ct. 193 | Ct. Cl. | 1987
OPINION
I. Introduction
This is a Type I differing site condition case. However, it is not one in which the differing conditions primarily relate to the character or nature of the subsurface materials encountered versus such materials depicted in the contract documents. To the contrary, the conditions averred to have been encountered here, and which are allegedly materially different from contract depictions, relate to excess quantities of gravel, eutaw, and unanticipated sizes of gravel. See The Arundel Corporation v. United States, 515 F.2d 1116, 207 Ct.Cl. 84 (Ct.Cl.1975). In short, we find that plaintiff, in its effort to prove its claim(s) of differing site conditions, has failed to properly compare the quantum of certain subsurface materials allegedly depicted by contract documents, within the maximum pay template, with the quantum of all such materials actually dredged from within that same site. As is explained infra, plaintiff’s affirmative obligation to do so, we feel, is an imperative in order to enable this court to determine — whether there are any material quantum differences (between anticipated and actual dredged materials) within the same contract site (i.e., the maximum pay template). Jurisdiction in this court is premised on § 1491, Title 28 U.S.C.
Our opinion embodies the court’s final decision on all issues and claims raised by the plaintiff’s, Weeks Dredging & Contracting, Inc.’s (Weeks), petition of December 26, 1984. This decision follows an exhaustive five-week trial (August 7 — September 10, 1986) which resulted in well over 5,000 pages of transcript and almost two hundred exhibits — many of which consisted of multiple pages. Several interlocutory orders
Weeks, the plaintiff-contractor, seeks, in the first of its two causes of action, an equitable adjustment in the aggregate amount of $3,599,171.72 based on three distinct differing site conditions it allegedly encountered in the performance of a multimillion dollar dredging contract with the U.S. Army Corps of Engineers (Corps). Said contract was for channel and harbor virgin dredging on the now completed Tennessee-Tombigbee Waterway (Ten-Tom)
As its second and last cause of action, Weeks seeks to recover interest only, pursuant to the Contract Disputes Act, 41 U.S.C. § 601 et seq (1982) (CDA), on a separate differing site condition claim, also arising out of the Ten-Tom project, which Weeks previously settled with the Corps in June, 1984.
At the trial, the defendant’s opposition strategies centered around proving two fundamental defensive theories: first, that certain and various debilitating circumstances surrounding Weeks’ own performance were the actual as well as the concurrent causes,of-the-i95=day~delayr and secondly, that there were in fact no site conditions encountered reasonably and materially differing from those depicted in the Invitation For Bids and specifications. With regards to concurrent causes for delay, defendant stressed: (a) that plaintiff failed to conduct a reasonably adequate pre-bid site investigation; (b) that Weeks failed to reasonably interpret the contract documents, including the contract boring logs; and (c) that Weeks utilized an inexperienced and poorly-qualified work force, poor dredging technique, as well as substandard dredging equipment. In opposing plaintiff’s differing site condition claim(s), defendant also
At closing arguments, the defendant focused its primary argument(s) from the foregoing (while not abandoning the same) and now emphasizes what it perceived to be a more fundamental failure of proof by the plaintiff. According to defendant, it is a simple fact that plaintiffs case is fatally flawed in that all of plaintiffs proof relates to an alleged differing site condition occurring at the wrong site. Instead of posturing its differing site condition claim by comparing the various estimated materials within the contract site {i.e., the maximum pay template) with the same categories of materials actually dredged in that same contract site (as it must), plaintiff erroneously compared, avers defendant, the categories of estimated materials within the maximum pay template, with the categories of materials actually dredged in the contract site plus an area of admitted 20 to 25% overdredging occurring outside of the contract site.
Defendant also posits three barriers to the plaintiffs claim for additional interest on the now-settled stump claim. First, defendant claims that plaintiffs alleged certification in October of 1982 was faulty as a matter of law. Secondly, even were that certification proper, federal regulations prohibit the government from paying additional interest on claims resolved by private settlement. Lastly, defendant asserts that as a matter of law, on the basis of the settlement agreement entered into on the stump claim, plaintiff is barred by the doctrine of accord and satisfaction on any claims plaintiff had, or may now have, relative to the stump award.
After thoroughly reviewing all of the evidence in the record, we are of the opinion that plaintiff is not entitled to an equitable adjustment based on differing site conditions for excess gravel, excess eutaw, and oversize gravel. While all of our reasons for this decision are set out more fully below, the primary, but not the only, basis for our decision is the failure of proof. In essence, try as we did to find probative evidence in the record which would permit us to make a valid comparison between materials expected (indicated by the IFB) and materials truly dredged, all within the actual contract area, we are forced to conclude that plaintiff has simply failed to adduce fundamental proof of the latter element, i.e., the quantum of the various materials actually dredged within the relevant contract (maximum pay template) area. In addition, we further find plaintiffs count II claim, for interest on the previously-settled stump claim, to be barred as a matter of law. Accordingly, plaintiffs entire petition is dismissed.
II. Background Facts
The plaintiff Weeks is a long-time participant in the field of dredging. Since its formation, in 1962, Weeks has evolved from a low-tech clam shell dredging operation to a firm capable of more sophisticated dredging techniques such as the hydraulic
Weeks’ competence as a viable dredging contractor is reflected in the extensive experience of its main or key personnel. The main force behind Weeks’ expansion into the hydraulic dredging field was Weeks’ vice-president, Mr. Dwight Rice, the project manager on the Ten-Tom contract.
Also of critical importance to Weeks’ performance on the Ten-Tom project was the superintendent of the dredging vehicle used on the project, Captain Glenn Harris.
Word of the existence of the Ten-Tom project reached Weeks in late 1978, and following thereon the IFB (#DACW 01-79-B-0039) was received in early January 1979.
This 7,789,200 cubic yard figure represented what was known to the parties as the “maximum pay yardage.”
The “pay yardage” is found within the confines of what is called the “pay template.” The “pay template” is a cross-section of the area (river channel) to be dredged which looks like the side view of an open box with upward sloping sides. As would logically and necessarily follow, outside of this “pay template” is all non-pay yardage. The “required pay template” is the minimum area within the pay template required to be dredged by the contractor pursuant to the contract specifications, i.e., the desired river channel.
The Corps’ estimated figure of 7,789,200 cubic yards, which represented the maximum pay yardage, therefore, included the one foot of allowable pay overdepth.
Testimony by one of Weeks’ officials described the Ten-Tom contract as one which was “ideal” for Weeks to bid.
Using the available information contained in the IFB (in particular the contract boring logs), as supplemented by his site investigation, Mr. Rice prepared Weeks’ bid. The record reflects that Weeks’ bid preparation activity was a process requiring many detailed documented estimates reflected on several charts and diagrams. Principle to this bid preparation process, however, were certain key and indispensable documents. First, Weeks prepared what was described as a “subsurface soils profile.”
As noted supra, using the foregoing soils profile and the USCS, Weeks calculated the total estimated quantity of each of the foregoing categories of materials expected to be dredged.
*201 Class Of Material Estimated Quantity Based On Contract Boring Logs
Sand 4,663,850 CY
Clay 2,299,675 CY
Sand with little to some gravel 56á,500 CY
Gravel with some sand 771,800 CY
Eutaw 62,350 CY
TOTAL 8,360,175 CY48
A cursory inspection of this chart reveals that Weeks’ own estimate of the maximum pay yardage actually exceeded that anticipated and initially provided by the Corps in the IFB (i.e., 7,789,200 vs. 8,360,175).
Having determined what it perceived to be the estimated total cubic yard quantities of the various materials depicted to be dredged by the boring logs (8,360,175 cy), Weeks next proceeded to calculate the total operating dredge hours needed to complete the job — the figure to which they could then apply hourly cost, overhead, and finally a mark-up factor to arrive at their bid price.
Beginning with the basic pumpability rates described supra, Mr. Rice first performed a series of adjustments, for each sub-component and each class of materials to be dredged, to take into account a variety of factors he believed limited dredge productivity. Those factors included — (i) the type of material to be dredged; (ii) the location of the material to be dredged; (iii) the length of the discharge line from the dredge to the disposal area; and (iv) the lift of the discharge line between the dredge Venture and the disposal area.
Before adopting the previously-mentioned estimated dredge hour figure as the official sub-component dredge time to be used in determining its bid, one additional limiting factor was considered. This factor was the time it would take the dredge itself to move in and out of position to accommodate the lateral sweeps of the suction pump and cutter (the actual dredging mechanism) as the dredge proceeded to move along the river channel.
Having sorted out yardage governs versus advance governs for each sub-component, Mr. Rice was able to arrive at his best estimate for dredge days necessary to complete each sub-component. This was done by taking the official gross estimate for dredge hours, and dividing that figure by the number of dredge hours available in a given day.
Weeks completed the bid time estimate analysis described supra sometime in early February, 1979. The 20.4 months time period estimated to dredge the entire project (8,360,175 cy) was then translated into a monetary bid of $9,329,238.00.
It is worthy of note that, since 1976 or 1977, Weeks had been keenly interested in starting a hydraulic dredge operation, but even as late as the award of the contract on April 2, 1979, it had yet to actually purchase an acceptable dredge.
Thereafter, following the submission of its bid on February 22,1979, Weeks made a second visit to Marco Island in March, 1979 to once again inspect the Western Hunter.
As a final and definitive method of inspection, Weeks hired an independent diesel engine expert, a Mr. Henry Wiggins, to inspect the dredge’s engines.
It is the opinion of the undersigned that the [Venture engines and generator] should operate satisfactorily for an indefinite period with proper supervision, care and maintenance.85
Lastly, the Corps itself sought to inspect the Western Hunter prior to Weeks purchasing it, and prior to the actual award of the contract on April 2, 1979.
As noted supra, Weeks later received notice that it had been awarded the contract on April 2, 1979.
Weeks received its notice to proceed with the project work on June 7, 1979.
The contract provided for completion of the project some 760 days after receipt of the notice to proceed.
Shortly thereafter, by a document dated July 10, 1979, Weeks submitted to the Corps a “Construction Progress Chart” detailing precisely how it planned to complete the project within the 760 days allotted.
Contrary to Weeks’ July 10, 1979 estimate, mobilization was not completed until January of 1980, rather than November of 1979.
Throughout the period of dredging, which actually lasted from January 19, 1980 to April 15, 1982, as well as through the later period of disengagement continuing at least through July 29, 1982, the events of each dredging work day were summarized by Weeks in a continuous log of reports called the “Daily Dredge Reports” (DDR).
The DDRs and the Corps’ QARs form the only contemporaneous business record of events as they occurred during the performance of the Ten-Tom contract. The DDRs, in particular, contain a daily log of the alleged actual gross cubic yards dredged, the type of materials dredged, and a record of delays in dredging due to equipment malfunction and other adverse dredging conditions, etc.
Said dredging process consisted of the Venture cutting and hydraulically pumping various subsurface materials {i.e., sands, clays, fines, eutaw, and gravel) from the river channel into prepared disposal areas. In order to visually estimate the amount of each of the materials dredged into the disposal areas, Mr. Rice testified that usually
Even a cursory review of the DDRs and the corresponding Corps QARs reveals that Weeks encountered tremendous difficulties coping with repeated mechanical failures of the Venture as well as many unexpected physical conditions present in the river channel. For example, the record reflects that Weeks based its bid on a minimum estimated operating dredge time of 15.93 hours per day in order to complete the project within the 760 days allotted.
To a lesser extent, but still highly significant, were delays encountered due to unexpected conditions in the river channel. In particular, Weeks was forced to dredge through debris such as stumps and logs on numerous occasions. Plaintiff estimates some 7,000 individual stops due to stumps alone.
The parties do not disagree that on occasion Weeks did, in fact, encounter physical conditions in certain cut areas different than those depicted in the contract boring logs,
Relative to the stumps and logs encountered in the river channel, no controversy remains. This is so because, prior to initiating suit in this court, Weeks settled its stump and log claim with the Corps.
At the same time the stump and log claim was submitted to the Corps, Weeks also submitted a separate equitable adjustment claim covering two of the three differing site conditions at issue in the claim before this court.
Following notice of the contracting officer’s August 30, 1984 decision denying plaintiff’s claim, plaintiff filed suit in this court on December 26, 1984. Plaintiff’s complaint states two separate counts. As noted supra, Count I relates to plaintiff’s allegations that it incurred compensable delays of 215 days due to differing site conditions based on excess quantities and sizes of gravel and excess eutaw.
III. Contentions of the Parties
A. Plaintiffs Contentions
Plaintiff proffers exhaustive evidence in support of its contention that it has met the requisite burden of proof on each element of its three differing site condition claims. In terms of the requisite elements of proof, plaintiff points to five: (i) there must be affirmative representations in the contract documents describing the subsurface conditions where the differing site condition was allegedly encountered; (ii) the contractor must have acted as a reasonably prudent contractor in interpreting the contract documents; (iii) there must be evidence that the contractor reasonably relied on the contract documents; (iv) the actual subsurface conditions encountered on the job must have differed materially from those depicted in the contract documents; and (v) the differing site conditions actually encountered must have been reasonably unforeseeable.
Consistently therewith, plaintiff avers that “[ijndisputably, the Corps included representations and depictions of the composition of subsurface conditions in the Contract documents.”
Next, plaintiff argues that as to the reasonableness of its interpretation of the representations in the contract documents, this court must judge its (plaintiff’s) conduct by “placpng] itself ‘into the shoes of a reasonable and prudent contractor’ and decide how such a contractor would act in [Weeks’] ... situation.”
In carrying its burden relative to the reasonableness of its bid preparation, plaintiff points first to the 20 years of bid experience of Weeks’ bid estimator, Mr. Rice.
As for the alleged reasonableness of Weeks’ time estimate in which to perform the contract work, plaintiff argues that it “properly accounted for all the factors which affect dredge productivity____”
To buttress its contention that its bid estimate was a reasonable interpretation of the contract documents, Weeks offers the corroborating testimony of its two expert witnesses Robert Kondner (qualified as a geotechnical expert
As for Weeks’ attempt to rely on the Corps’ internal materials breakdown and time estimate for completion of the project, plaintiff claims that these estimates are particularly relevant because they are markedly similar to those of Weeks.
The third element of plaintiff’s differing site condition claims is that of reasonable reliance upon the contract documents. According to plaintiff, “Weeks easily meets this third element because its Bid Estimate is derived almost entirely from the subsurface data contained in the Contract documents.”
Weeks’ next point addresses the relative materiality of the differing subsurface conditions it actually encountered as compared with subsurface conditions depicted in the contract documents. Here, Weeks argues that “[w]hat constitutes a ‘material difference’ depends on the particular facts of each case, but a comparison of Weeks’ Bid Estimate for quantities of gravel and Eutaw and oversize gravel with the actual subsurface conditions clearly establishes a ‘material difference.’ ”
Plaintiff approaches the “materiality” issue from another perspective as well. Quoting Foster Construction, plaintiff further argues that a differing site condition is also material where “ ‘plainly substantial modifications of the work’ ” are needed “ ‘to meet [the] changed conditions.’ ”
Plaintiff also contends that it has offered into the record several expressed admissions by the defendant of the alleged differing site conditions. These alleged admissions are said to extend to oversize gravel in Cut Areas 14, 15, 18, 19, 20 and 21; excess quantities of eutaw in general and specifically in Cut Areas 9 and 19; and
Weeks measures the materiality of the lost dredge productivity allegedly occasioned by both the proven and admitted differing site conditions by pointing to the excess days said circumstance required to complete work on the project. According to plaintiff, “[wjhile Weeks reasonably expected it could dredge the job in 413 days, it was actually on the job for 818 days.”
In addition, with regard to the materiality issue, Weeks also presents an exhaustive review of how the applicable case law supports its method of measuring the materiality of the encountered differing site conditions. Plaintiff, however, relies primarily on cases dealing with differing site conditions brought before the Corp of Engineers Board of Contract Appeals.
Similarly, in American Structures, Inc. & Mining Equipment Manufacturing Corp., A Joint Venture, ENG BCA 3410, 76-1 BCA 1111,683 (1975), government boring logs indicated the presence of scattered cobbles and boulders. Upon encountering a substantial amount of cobbles and boulders, the contractor sought and was awarded an equitable adjustment when the “Corp Board held that the increased quantities of cobbles and boulders constituted a physical condition differing materially from that indicated by the contract documents.”
In addressing its second cause of action, plaintiff argues that it submitted to its contracting officer the differing site condition claims alleged in its petition here, including the previously settled stump claim, on October 6 and 29, 1982.
B. Defendant’s Contentions
The defendant’s theory of the case, as expected, differs substantially from that advanced by the plaintiff in its contentions. That is to say, defendant focuses succinctly on several fundamental weaknesses in Weeks’ proof, and attempts to explain Weeks’ extensive delay, in completing the project, as being due to factors other than differing site conditions. Thus, in stark contrast to the expansive contentions of the plaintiff, the government argues quite pointedly that:
The evidence presented by Weeks ... presents an invalid comparison of two different sites for which no compensation should be given____ The first site ... is the “pay template” upon which Weeks based its analysis of the soils it*214 expected to encounter____ The second site is the area of Weeks’ actual excavation ... which extended beyond the pay template. [T]he effect of Weeks’ over-dredging beyond the pay template caused it to encounter a greater percentage of gravel and Eutaw than was indicated by the contract boring logs as being within the pay template. Week’s [sic] lawsuit is thus nothing more than an attempt to obtain additional compensation for its overdredging activities ... (emphasis added).208
While defendant contends that this fundamental failure of proof causes the plaintiff’s case to be fatally flawed, it also addresses the sufficiency of the evidence as to the other elements of plaintiff’s differing site condition claims which it also contends to be defective.
First, defendant focuses on plaintiff’s oversize gravel claim. Defendant claims that the evidence shows that the amounts of any larger than anticipated gravel encountered on the project were far from material.
In addition, defendant points out that “Weeks’ [proof] was completely lacking in probative evidence to establish the amount of delay attributable to the supposed ‘oversized’ gravel it allegedly encountered.”
As for Weeks’ excess eutaw claim, defendant again attacks the materiality of plaintiff’s figures for eutaw actually encountered versus eutaw expected based on the contract boring logs. Defendant first notes that simply by comparison — .95 percent expected eutaw versus 2.5 percent allegedly encountered — the difference is immaterial.
Defendant similarly contends that plaintiff’s failure to take into account over-dredging of eutaw in preparing its bid estimate also reflects Weeks’ failure to act as a reasonable and prudent dredge contractor under the circumstances. “ ‘[A] reasonable, prudent contractor and bidder in these circumstances would not have assumed that no [Eutaw] would be encountered’ [during overdredging] , ... knowing where the Eutaw was to be found on this project and anticipating that the project
Turning to Weeks’ last alleged differing site condition, that for excess gravel, defendant relies primarily on the argument that it is Weeks’ total failure to separate the encountered overdredged gravel from the encountered gravel within the pay template that accounts for Weeks’ daily dredge reports showing excess gravel.
Moreover, claims defendant, even this relatively minor difference in encountered and anticipated percentages of gravel is readily explainable by a number of factors other than the alleged differing site condition. First, the Corps’ test pit study more likely overestimates the amount of actual gravel dredged because it is based on a sample of only those five disposal areas where “Weeks claimed the greatest difference existed between gravel percentages expected and those allegedly encountered.”
Third, there is the method of visual (“eyeball”) estimation Weeks used to approximate, on its daily dredge reports, the amount of each of the materials allegedly excavated on each given day.
Similarly, with regard to the differing site condition for excess gravel, defendant also attacks the plaintiff’s failure to present evidence which adequately apportions any of the alleged delay directly to the encountered and perceived excess gravel.
Focusing on these 12 “uncompensated” days as a worst case circumstance from its posture, the government postulates a number of scenarios, none of which include excess gravel, which it believes easily explains this minimal period of delay. First is the plaintiff’s admitted overdredging. Defendant contends that the evidence shows the plaintiff’s overdredging accounts for “34 extra days that Weeks spent on this project for reasons unrelated to the materials Weeks encountered.”
The government relies on the same extenuating circumstances noted supra to discredit the plaintiff’s overall proof using another theory as well. Thus, the defendant contends that “[t]he general rule is that ‘[w]here both parties contribute to the delay neither can recover damage[s].’ This general rule relating to concurrent delays is applicable ‘unless there is in the proof a clear apportionment of the delay and expense attributable to each party.’ ”
Relative to count II of plaintiff’s petition requesting additional interest on the previously settled stump claim, defendant argues that plaintiff’s reliance on its DD Form 633 to fulfill the CDA certification requirement has been specifically rejected by the Federal Circuit in the case of ReCon Paving, Inc. v. United States, 745 F.2d 34, 40 (Fed.Cir.1984).
IV. Discussion
A. Introduction
At the outset we noted, and now re-emphasize, that while this is a Type I differing site condition case, it is not, in major part, one which seeks an equitable adjustment because the subsurface materials actually encountered differed materially in character and nature from the subsurface materials depicted in the contract documents. Here, plaintiff contests the nature of the subsurface materials only as to the minor extent it allegedly encountered gravel larger in size than that depicted in the contract documents. However, the major focus of this case is the plaintiff’s averment that it is entitled to an equitable adjustment because some of the subsurface materials actually encountered (i.e., gravel and eu-taw) materially exceeded those same materials as to the quantity depicted in the contract documents. It is to the plaintiff’s allegations of excess quantity encountered that we are constrained to devote our primary attention.
A “Type I” differing site condition is appropriately styled inasmuch as it derives from the language contained in the first subpart of the standard “Differing Site Conditions (1968 FEB)” clause, which provides in relevant part as follows:
(a) The Contractor shall promptly, and before such conditions are disturbed, notify the Contracting Officer in writing of: (1) subsurface or latent physical conditions at the site differing materially from those indicated in the con-*218 tract____ The Contracting Officer shall promptly investigate the conditions, and if he finds that such conditions do materially so differ and cause an increase ... in the Contractor’s costs ... an equitable adjustment shall be made and the contract modified in writing accordingly, (emphasis added).249
Such a clause appears in plaintiff’s contract as General Provision 4.
As to the meaning of the foregoing, it is now clear beyond cavil that the interpretation of contractual provisions, such as the differing site conditions clause quoted supra, is a question of law to be decided by the court independently of the evidence presented by, or the arguments of, the parties. Bonner v. MSPB, 781 F.2d 202, 205 (Fed.Cir.1986); W.M. Scholosser Co., Inc. v. United States, 767 F.2d 870, 873 (Fed.Cir.1985); P.J. Maffei Bldg. Wrecking Corp. v. United States, 732 F.2d 913 (Fed.Cir.1984); Foster Construction C.A. & Williams Bros. Co. v. United States, 435 F.2d 873, 880 (Ct.Cl.1970); Mojave Enterprises v. United States, 3 Cl.Ct. 353, 357 (1983). Thus, this court and the Federal Circuit, as well as our predecessor, the Court of Claims, have, over time, given substance and legal meaning to this provision in the form of certain fundamental elements which must be proven, by the requisite quantum of proof, in order for a contractor to prevail on a differing site condition claim. For the most part, those fundamental elements are factual in nature, and therefore are the sole burden of the plaintiff to prove by a preponderance of the evidence.
Our reading of relevant and binding case law leads us to the conclusion that, in order for the plaintiff to persuade this court to award it the equitable adjustment it seeks,
B. Elements
(i) Contract Representations Concerning Subsurface Conditions
As recently noted by Judge Tidwell in the case of Stuyvesant Dredging, 11 Cl.Ct. at 858, a differing site condition claim “stands or falls upon what is indicated in the contract documents.” We thoroughly agree. Accord P.J. Maffei, 732 F.2d at 916; Foster Construction, 435 F.2d at 881. And, to this pointed observation, we hasten to add that the indicated subsurface conditions (if any), as well as the encountered subsurface conditions, must specifically relate to “the [same contract] site.” Where the contract contains no affirmative (positive or negative) representations of the subsurface conditions, purportedly relied on by the contractor, the government has no liability. Cf. STG Construction Co., Inc. v. United States, 157 Cl.Ct. 409 (1962), and Ragonese, et al v. United States, 120 F.Supp. 768, 128 Ct.Cl. 156 (1954). In such a case, the substance of the plaintiff’s averment is more akin to a miscalculation, i. e., the assumption of a perceived fact which proved erroneous. While unfortunate, nevertheless, it is a risk for which only the contractor must assume responsibility. We believe that this scenario mirrors the operative facts in the case at bar regarding the issue of excess quantity.
Despite the firmness of this rule, the interpretation of contract indications is not a matter of precise science as one would perhaps desire. See infra. In that connection, plaintiff here makes much of the fact, and we agree, that the value and purpose of a differing site condition clause is to save the government money by cutting down on the insertion of speculative cost contingency amounts, thereby removing uncertainty from the contractor’s perspective. This court and our predecessor court have previously noted this policy. See, e.g., Fox v. United States, 7 Cl.Ct. 60, 64 (1984); Foster Construction, 435 F.2d at 887; Ruff v. United States, 96 Ct.Cl. 148, 164 (1942). In practice, however, as is perhaps illustrated by this case, a contractor may not always accurately anticipate the rather esoterical legal standard by which the contract representations will be judged. As a result, what the contractor might have thought were reliable and viable affirmative contract indications/representations, as to separate quantities of various materials, could, as here, turn out to be no representations at all. As a result, the contractor in such case is left both without a substantive remedy and also without having noted and provided for such a contingency amount in its bid.
Be that as it may, our threshold task, as charged, is to interpret the plaintiff’s contract within the framework and the guidelines set by the Federal Circuit and our predecessor Court of Claims. In this regard, our proper perspective in viewing a case such as here, has been described as this court stepping “into the shoes of a ‘reasonable and prudent’ contractor” to decide how “such a contractor would act in [the plaintiff’s] situation.” P.J. Maffei, 732 F.2d at 917 quoting H.N. Bailey & Associates v. United States, 449 F.2d 387, 390, 196 Ct.Cl. 156 (Ct.Cl.1971). Further, we are instructed to note that affirmative contract representations may nevertheless exist, although the “contract ‘indication[s]’ need not be explicit or specific____” P.J. Maffei, 732 F.2d at 916. However, even in such case, “the contract documents must still provide sufficient grounds to justify a bidder’s expectation of latent conditions materially different from those actually encountered.” Id. In substance, “there must be reasonably plain or positive indications in the bid information or contract documents” of the facts plaintiff relies on in making its differing site condition claim. Pacific Alaska Contractors, Inc. v. United States, 436 F.2d 461, 469, 193 Ct.Cl. 850 (Ct.Cl.1971). Accord P.J. Maffei, 732 F.2d at 916; Stuyvesant Dredging, 11 Cl.Ct. at 858. Against this background, we now look to the operative facts in addressing the primary issue regarding this element which is — whether the contract documents asserted, directly or indirectly, that plaintiff in dredging the project would encoun
The Bidding Schedule attached to the original IFB, which facilitates the formulation of a contractor’s bid, fragmentizes the subject work project into four component parts as follows:
Item Estimated Unit Unit Quantity Price
Mobilization and Demobilization 1 Job XXX
Clearing and Grubbing 1 Job XXX
Dikes and Waste Weirs 1 Job XXX
Excavation 7,028,0001 Cu. Yd.
TOTAL BID
1 Includes required dredging and allowable overdepth as specified and shown on the drawings254
As is evident, the line item for “excavation” states that the estimated quantity of total cubic yards of all materials to be dredged is 7,028,000, including allowable overdepth.
Next, we note that the appendix to the Corps’ IFB also contains a number of specific and detailed contract indications. However, these indications relate to the character and nature of each of the anticipated subsurface materials to be dredged (i.e., sands, clays, fines, gravel, eutaw, etc.), as distinguished from the specific quantity of each such material. These indications are found in the logs of the 156 borings taken by the Corps (1973-75) in order to inform bidders of subsurface conditions and the general nature of materials surrounding the proposed contract site. The various subsurface conditions disclosed by the 156 borings were classified in logs by means of descriptive terms which correlated with the standard criteria as proscribed by the Unified Soils Classification System (USCS).
We believe, therefore, that a reasonable and prudent contractor would conclude, based on the contract boring logs, that the government was positively representing the overall character of the type of materials to be expected and, within certain reasonable limits, where such materials would be found within the contract area. For example, a reasonable reading of the boring logs, in general terms, would indicate that the contractor should expect to dredge silts, clays, sands, gravel, and eu-taw within the contract area. Moreover, a fair and reasonable reading of the logs further indicates that various grades, types, or varieties of each of these subsurface materials would be encountered. In particular, some logs even went so far as to indicate the borings had unearthed “gravel, 1' max” in size.
Plaintiff has claimed, however, that the boring logs contained indications rising to the level of “clear and direct representations of subsurface conditions that a contractor could reasonably expect to encoun
Nowhere do we find, nor has the plaintiff shown us, that these contract documents by clear and direct representations assert any specific quantities of particular subsurface materials expected to be the product of the dredging project. This is true notwithstanding the plaintiff’s assertion that by classifying the materials according to the USCS the government somehow included a contract indication which allegedly provided the plaintiff with the means to bridge this gap for bid purposes. The incontrovertible fact is, as clearly stated in the IFB, the USCS was only referenced as a means to “classiffy]” the various materials disclosed by the core of the boring:
Soils are classified in accordance with the Unified Soils Classification System, Technical Memorandum No. 3-357 dated April 1960 for civil projects and Military Standard 619B dated 12 June 1968 for military projects.259
Giving ordinary words their ordinary meanings would readily indicate that by utilizing the word “classified” the Corps meant — “to arrange in classes according to subject matter; and to assign to a category.”
Moreover, what each boring log indicated thereon, as to the location of the various materials depicted between the several logs and throughout the project area, is relatively even less precise. Plaintiff has claimed that it found both gravel and eutaw in cut areas where several contiguous boring logs allegedly indicated there would be “none.” To make this foregoing claim, plaintiff has admitted that it relied entirely and solely on its extrapolations from the contract boring logs. The method of extrapolation plaintiff used to determine what the government allegedly “represented” would exist between the borings, however, — the area where the alleged differing condition was found — was no more a contract indication than those alleged as to quantity. In fact, as we demonstrate below, the contract indications that plaintiff requests we find, as to location, are no more than hospitable assumptions, which, while necessary for the bid to proceed, are nonetheless entirely of the contractor’s own making.
A more complete understanding of the unreasonableness of Weeks’ interpretation of what the government represented may best be seen following a brief explanation of how Weeks’ conducted its bid preparation process. At the outset, the Corps provided Weeks with a large set of site maps
As its first step in the bid preparation process, plaintiff plotted these borings on a side view drawing of the contract site in order to construct a “soils profile” of the areas to be excavated.
With the descriptions of the individual borings plotted, Mr. Rice next needed to fill in the “gaps” between the several borings to make his diagram continuous. Clearly, as discussed supra, the boring logs themselves did not purport to reflect a continuous stratified depiction of materials throughout the project area, nor did they contain a methodology approved by the Corps for doing so. In fact, even Mr. Rice conceded that — “It was not all continuous uniform material, by any means.”
Based on the soils profile and USCS described supra, plaintiff geometrically calculated the quantity of each type of material indicated on the profile by total-ling, in terms of cubic yards, the volume of each strata to be excavated. Then by using these volume figures, plaintiff was able to conclude for itself that a certain percentage of the entire excavation would be clays, sands, or gravels, etc., and that certain entire cut areas (as broken down by the plaintiff) contained little to no gravel or eutaw, etc., at all. It is these estimates of the quantity of each subsurface material expected to be dredged in specific contract areas which have been presented to this court as the precise “contract indications” which led the plaintiff to conclude that it had encountered a differing site condition.
As we have demonstrated, it is the plaintiff alone who engaged in various unilateral assumptions and extrapolations, in order to calculate its materials quantities between the several borings. Plaintiff apparently has misread the boring logs to guarantee the continuous composition of subsurface materials, ultimately, across the
In sum, we believe it is painfully clear that the plaintiff’s differing site condition claims, as to quantity and location of materials, are based not on any clear contract indications, but upon independent factual assumptions for which only it, as the maker of those assumptions, can bear final responsibility. That plaintiff, in using those assumptions, proceeded to miscalculate the quantity and location of the subsurface materials, is a burden the plaintiff must bear. The case law is quite clear that contractors are not to receive equitable adjustments for miscalculations they have engaged in by misreading contract documents. Roscoe-Ajax Construction Co. v. United States, 458 F.2d 55, 60-61 (Ct.Cl.1972); Perini Corp. v. United States, 381 F.2d 403, 415 (Ct.Cl.1967); Leal v. United States, 276 F.2d 378, 384-85 (Ct.Cl.1960). By analogy, we believe this point is equally valid to the miscalculation here. See also Blauner Construction Co. v. United States, 94 Ct.Cl. 503 (1941).
In Leal, for example, an inexperienced contractor misread the contract documents to conclude that no subsurface water would be encountered. Leal, 276 F.2d at 378. In Perini, the government sought relief for miscalculating the amount of water plaintiff would be required to pump, and for which it would pay, under the contract. Perini, 381 F.2d at 403. In either case, because of the claimant’s own error in interpreting the contract documents, the Court of Claims found the structure of a differing site condition clause an inappropriate mechanism for relief. In the case at bar, Weeks’ misinterpretation of the contract indications resulted in it miscalculating certain materials quantities and locations. Weeks now claims a differing site condition where the basis of that claim is not a correct reading of the contract documents, but an incorrect reading embellished by assumptions not found in the contract documents. Like in Leal and Perini, Weeks’ claims must be rejected as well.
In addition, we would be remiss if we did not point out several indications in the contract documents which would lead a reasonable and prudent contractor to conclude that the government did not intend the boring logs to be indicators of the specific quantum and/or location of each of the various subsurface materials throughout the entire contract site. First, by supplying boring logs containing numerous gaps in greatly varying lengths, with material descriptions in intentionally general terms, and logs ranging randomly from one side of the river to the other in distances of 300 to over 1,000 feet apart, it can hardly, be said that the government would warrant, against this background, the separate quantum of each subsurface material determined to be dredged by a contractor.
Second, there is the issue of the allowable overdepth. While this issue is far more critical in our ultimate determination infra, it also has some bearing on an interpretation of what the government was indicating through the contract boring logs. As noted supra, the contract expressly provided that Weeks was to be paid for up to one foot of overdepth dredging, i.e., one
We are reminded that “[w]hile a contractor need not demonstrate that its interpretation of the contract is the only reasonable one, it does bear the burden of showing that its construction is at least a reasonable reading.” P.J. Maffei, 732 F.2d at 917 citing Max Drill, Inc. v. United States, 427 F.2d 1233, 1245 (Ct.Cl.1970). We believe our examination of the contract documents shows that the government in no way intended to warrant, by including the boring logs, either the mathematical quantities of the various materials components, or their location across the entire contract site. It is clear on these facts and we find, therefore, that the government provided the logs and bidding schedule in an effort to assist bidders in understanding the total quantity of all materials to be dredged in gross, and their general nature, character, and location. We believe the contract documents at bar would have apprised a reasonable and prudent contractor of as much, and actually depicted no more.
(ii) and (iii) The Reasonableness of Plaintiffs Interpretation of the Contract Indications And Reliance Thereon
Both the second and third elements of the plaintiff’s claim focus on the essential point of the reasonableness of the plaintiff’s conduct in interpreting the contract documents, and utilizing that information to arrive at its bid. Because these two issues both relate to the plaintiff’s overall pre-award conduct, with a common viewpoint being the reasonableness thereof, we believe that they are best addressed, in the interests of logic and brevity, as a single element. We proceed, therefore, with our analysis on that basis.
As a threshold observation, we note that much of what we said relative to the plaintiff’s misinterpretation of the contract indications, and the plaintiff’s many assumptions, is also relevant to a determination of the reasonableness of the plaintiff’s pre-award conduct discussed infra. As before, our standard is to judge the plaintiff’s “reasonableness” from the perspective of a reasonable and prudent contractor acting under similar conditions. See P.J. Maffei, 732 F.2d at 917. Our conclusion is that, on the facts here, plaintiff was unreasonable in its pre-award conduct for failing to adjust its bid to take into account the risks associated with two critical assumptions which, when taken together, thoroughly impacted upon its estimation of all classes of expected materials (gravel, eutaw, oversize gravel, etc.). We believe that given the significance of this misinterpretation, relative to the precise materials estimates plaintiff relies on for each of its claims, the plaintiff’s bid estimate does not manifest sufficient evidence of either reasonable reliance upon, or interpretation of, the contract indications as required.
As noted supra, plaintiff’s first assumption, in making its subsurface soils profile, was that borings had not been taken from the banks of the river, but rather that they all had been taken from the very center of the channel plaintiff was to dredge.
From another perspective, there was also a downside to assuming plaintiff’s “best case” scenario. The problem with the plaintiff’s assumption was that, in fact, most of the borings were actually not in the center, but on the banks, of the river channel. To the extent plaintiff assumed these borings were in the center of the river, the plaintiff’s bid was based on center line extrapolations. Against this background, plaintiff’s entire bid was based, in major part, not on the subsurface conditions of the actual channel it was required to dredge, but on the conditions of a channel which it assumed existed conformable with the broad and general indications in the boring logs. The record is totally void of any evidence indicating that plaintiff performed any quantitative adjustment to its bid to account for the substantial risks associated with this threshold assumption.
Plaintiff’s second significant assumption relates to its extrapolation from, and interpolation between, the 156 borings. This assumption, in the words of Mr. Rice, was as follows:
Mr. Rice: In other words, what you see on a boring, I assumed was true halfway to the next boring. And then halfway to that boring, halfway to the next boring, this boring I said would be true. So I thread those materials across my cross sections that I used for materials calculations to get their influence in the project as to how much of each quantity there would be.272
Plaintiff has explained that it utilized this assumption because it claims it was a standard way to reasonably interpolate between the borings, absent any evidence to the contrary. Clearly, we do not fault the plaintiff for utilizing this methodology.
However, our primary concern relates to the availability of other probative evidence regarding the surrounding subsurface conditions that would call into question the reasonableness of this assumption relative to the areas where plaintiff later encountered alleged excess gravel. We have reviewed the record and find evidence which we believe should have suggested to a reasonable and prudent contractor the likely existence of gravel in greater percentages than that which plaintiff expected based on a mere extrapolation laterally and below the boring logs. In the face of such evidence, we find that it would be unreasonable not to increase the expected quantum of gravel to reflect such increased probability of encountering greater amounts of this material than anticipated. We believe available collateral evidence of this magnitude was present, but that plaintiff once again acted unreasonably in failing to make a sufficient inquiry so as to facilitate an appropriate adjustment to its bid.
Second, against this background, there is the impact of gravel in-flow from two upstream tributaries into the Ten-Tom, one of which entered the Ten-Tom at the northernmost (upstream) point of the plaintiff’s project site. The critical evidence in this regard comes from Defendant’s Exhibit 56, an enlarged map of the county (Lowndes County, Mississippi) containing the northern half of the plaintiff’s project. That map contains approximately 67 red dots purporting to represent sand and gravel mining operations in the vicinity of the Ten-Tom River and its tributaries. The two critical tributaries we noted, supra, are the Buttahatchie River, which enters the Ten-Tom some 14 miles north (upstream) from the northern end of the plaintiff’s project site, and the Luxapalila River, which enters the Ten-Tom just north of the northern end of the plaintiff’s project site. The presence of the many gravel and sand mine operations contiguous to these two rivers clearly corroborates the testimony of defendant’s soils expert (Dr. Lang) that these eastern tributaries contained significant gravel, and they carried that gravel with them as they emptied into the Ten-Tom River. Accordingly, in the words of defendant’s expert, they truly “supply the gravel into the Tombigbee River valley.”
While the location and proximity of the gravel in-flow from these two tributaries is a potent circumstance in and of itself to suggest the presence of substantial gravel in the subject project area, there is yet a third fact in evidence which compels this conclusion to an even greater likelihood. That evidence relates to the normal pattern of materials deposits in rivers which contain numerous meanders such as the Ten-Tom. Defendant’s soils expert (Dr. Lang) further testified that as a general principle, heavier materials being carried by a river tend to settle out or deposit along the inside banks of bends or meanders in the river.
The significance of these three fact circumstances regarding the lay-out of plaintiff’s project, the gravel in-flow, and the materials deposits, would have, we believe, changed a reasonable contractor’s view, from that of plaintiff’s, with regard to expected gravel in and around the banks on the inside of the several meanders where
The record is clear beyond cavil that Weeks actually knew of the existence of gravel operators in the area of its project site.
In sum, then, we fault plaintiff not for generally making the assumptions that we have addressed, but for failing to recognize the significant downside to those assumptions and making appropriate adjustments to its bid therefor. In “moving” the bor-ings to the center of the river to perhaps minimize extrapolation risk, plaintiff clearly based its bid on facts contrary to those stated in the contract documents. Inasmuch as the borings were the only actual data for its materials estimates, this assumption undoubtedly changed the entire character of the extrapolations plaintiff made therefrom. Similarly, in failing to contact and interview gravel operators plaintiff clearly knew existed, plaintiff was self-deprived of likely important information concerning how its extrapolations between borings might very well have underestimated its calculation of expected gravel. Ironically, plaintiff is now here to claim an equitable adjustment that this very underestimation may have substantially caused. In both instances, as explained supra, we believe a reasonable contractor would have acted otherwise.
(iv) The Actual Subsurface Conditions Encountered Must Differ Materially
Having concluded that plaintiff has failed to carry its burden with respect to the first three elements discussed supra, it would appear that any further discussion of the plaintiff’s claims would be perhaps academic. In spite of the foregoing, we have, nevertheless, decided to make findings regarding all remaining elements respecting the alleged differing site condition claims. For purposes of this analysis, we assume, arguendo, that plaintiff has indeed carried its burden with respect to elements (i), (ii), and (iii) (but we do not so find). We proceed in this manner in order to establish that there are other independent bases for rejecting the plaintiff’s ex
a. The Legal Criteria
The fourth fundamental element of a differing site condition claim is primarily factual in nature — i.e., the subsurface conditions actually encountered (re gravel and eutaw), must differ materially from those depicted in the contract documents within the same project site. Plaintiff claims that, based on the information summarized in its daily dredge reports, it has conclusively proven that it in fact encountered quantities of gravel, eutaw, and sizes of gravel, all materially in excess of those represented in the contract documents. In particular, plaintiff claims that the daily dredge reports prove that Weeks actually encountered 24.9% gravel, as opposed to the 8.1% depicted in the contract documents; 161,-305 cubic yards of eutaw, as opposed to the 62,350 cubic yárds depicted; and graded gravel up to three inches in size, as opposed to three-fourths of an inch depicted gravel.
In assessing the probative value of plaintiff’s proof, with regard to subsurface conditions actually encountered, we believe that it is basic and fundamental that such proof must encompass a comparison of the subsurface conditions, both estimated and actual, contained within the precise work site as defined in the parties’ contract, i.e., the maximum pay template. The operative language in the Differing Site Conditions clause of subject contract, as quoted supra, makes this conclusion abundantly clear. We repeat the critical portion of that provision here:
(a) The Contractor shall promptly ... notify the Contracting Officer ... of ... conditions at the site differing materially from those indicated in the con-tract____286
What this means, and we so hold, is that any contract indications relied on by the contractor can only form the basis of a differing site conditions claim to the extent that they (i.e., the contract indications) are “at the site,” in this case the maximum pay template. Likewise, any proof of actual conditions encountered, proffered by the plaintiff to establish a differing site condition, is similarly relevant only to the extent that it represents those conditions encountered “at the site,” in this case, the maximum pay template.
b. Plaintiffs Failure Of Proof With Regard To Actual Conditions “At The Site”
While this need to compare only those subsurface conditions, i.e., expected and actual, within the same site may seem to state the obvious, it appears that in the case at bar, the plaintiff may have, in fact, missed the obvious. Plaintiff’s ..operative proof of actual conditions encountered fails this fundamental test because the daily dredge reports simply do not summarize and quantify the various materials dredged only from within the contract site, i.e., the maximum pay template. The daily dredge reports, as candidly admitted by the plaintiff, are simply a summary of materials taken indiscriminately from both the area within the maximum pay template, and the area of non-pay overdredging outside of the maximum pay template.
This fatal flaw which we find in the plaintiff’s proof, therefore, leaves this court in the unacceptable position of having to speculate as to the true character, nature, and quantity of each of those various materials which were actually dredged within “the[contract]site,”i.e., the maximum pay template. For example, plaintiff
Plaintiff’s attempt to discredit this fundamental incongruence falls short of the mark. In this connection, it argues that the figures of 24.9% actual, and 8.1% expected, gravel are comparable because it has also proven that the materials composition of the subsurface within the areas of admitted overdredging (both lateral and below the maximum pay template) is the same as that within the maximum pay template.
We believe that independent of the fact that this type of extrapolation was not a part of the contract indications as noted supra, it is, by the admission of one of plaintiff’s own witnesses, an inherently unreliable technique. There is testimony in the record by one of plaintiff’s own expert witnesses that the composition of the materials below a particular boring can have a strata of material three to four feet in width or it could vary or change within as little as 6 inches below that particular boring.
Moreover, with respect to the foregoing, we believe that the only persuasive direct probative evidence on this point supports a
c. The Inherent Unreliability Of Plaintiff’s Daily Dredge Report Data
As demonstrated supra, plaintiff’s failure of fundamental symmetry in proof regarding the quantification of expected and actual gravel, eutaw, and oversize gravel, is clearly a valid basis upon which we may reject the subject claims and find that plaintiff has failed to prove that it encountered subsurface conditions materially different than those indicated in the contract documents. We also hasten to add that this is not the plaintiff’s only failure of proof with regard to conditions actually encountered. We believe that even assuming, arguendo, that plaintiff’s proof, as to actual and expected gravel, eutaw, and oversize gravel, was that the materials were dredged from the same contract site, such proof on the facts here, based totally upon the daily dredge reports, would nonetheless be inadequate to carry the plaintiff’s burden. This is so because we find that the circumstances surrounding the preparation and the maintenance of the plaintiff’s daily dredge reports render the data, as to the percentage quantum of the various subsurface materials recorded thereon, inherently unreliable.
It is undisputed that plaintiff’s only source of raw evidence of subsurface conditions actually encountered is that contained on the 818 daily dredge reports. As we noted at the outset, these reports, and the Corps’ inspector’s reports, were the only contemporaneous records of events as they allegedly occurred on the project. On the upper portion of each daily dredge report, plaintiff recorded, usually at 8:00 a.m. each day, its best estimate of the total cubic yards dredged during the preceding 24 hours, as well as a percentage breakdown with respect to the various materials dredged. For example, on the report for March 7, 1982, plaintiff estimated dredging 7,998 cubic yards of materials, consisting of 15% clay, 70% sand, and 10% gravel.
Thus, it would not be an overstatement to say that the viability of the plaintiff’s entire case substantially depends upon the credibility of the encountered materials percentage estimates derived from the daily dredge reports. This data is truly the core of the plaintiff’s claim. Unfortunately for the plaintiff, we have substantial misgivings as to the credence to be given to the estimated percentages of the various dredged materials.
1. The Methodology Of Estimation
Our first finding with respect to the credibility of plaintiff’s daily dredge reports covers the inherent unreliability of the methodology plaintiff employed in gathering the data recorded thereon as “material[s] description.” Specifically, we refer to the precise numerical estimates, by percent, of the various materials components allegedly dredged, i.e., actually taken out of the river, during the period of the report. The explanation below illustrates the methodology plaintiff employed to arrive at these percentage materials breakdowns.
The setting is any one of plaintiff’s disposal areas in which it deposited the dredged materials. It is a large, rectangular, desolate landfill, of some tens or even hundreds of thousands of square feet. It is surrounded by a man-made dirt dike, with a graded surface sloping downward to create a relatively level stagnant settling pond at the lower most bottom. The flat settling area at any given time during the dredging process contains at least four to five feet of standing water. Somewhere towards the river side of the disposal area is the open end of a large diameter discharge pipe, which enters the disposal area over a side dike, and also continues in the opposite direction into the river, where it eventually connects to the dredge itself. From this pipe there is continuously spewed a slurry of water mixed with the dredged materials (i.e., sands, fines, clays, gravel and eutaw etc.) as a workman stands at a distance “eyeballing” its waterfall-like projection into the disposal area. Periodically, the scene is interrupted because the falling debris, i.e., gravels and eutaw, occasionally pilling up at the end of the discharge pipe, requires a levelling process by a bulldozer.
Such activities in the disposal area necessarily continue, more or less, day and night whenever the dredge was in actual operation. Often this was upwards of 18 to 20 hours a day. Once a day, usually at 8 a.m., an estimate was made of the composition of all of the dredged materials dispensed from the discharge pipe into the disposal area over the past 24 hours.
With regard to these visual estimates, there were, of course, limits as to the extent to which a naked eye could have reasonably and accurately quantified, for comparison purposes, the vast amount of substantive materials spewed in a waterfall-like fashion into the disposal area(s). Not to mention the virtually impossible task of visually separating between where today’s materials began, and yesterday’s ended. Added to this, there was also the supreme difficulty of viewing the layers upon layers of buried materials which anything less than a complete post dredging excavation would not have disclosed. Moreover, the materials were constantly being spread out and leveled, thereby muddling them with those preexisting in the same area. While plaintiff refuses to acknowledge and recog
There are also serious questions concerning the plaintiffs methodology in estimating materials encountered that arise from the way said materials were deposited into each disposal area. Our understanding, based on the plaintiffs testimony, is that as the materials flowed from the disposal pipe, they dropped from the pipe to the ground, in distance, based on their relative weights, i.e., the heavier particles dropping first and so on.
2. The Lack Of Certain Critical Evidence
Our second finding is that even were plaintiffs methodology for estimating materials components more inherently reliable, plaintiff has failed in its burden to establish the pertinent qualifications and credibility of several of the employees who were allegedly at the site actually performing the visual estimates. Such significant omissions, we believe, necessarily taint each and every percentage materials estimate on each and every daily dredge report. Given the overwhelming importance of these percentage materials estimates to plaintiffs entire case, we view it essential that plaintiff should have corroborated the foregoing critical data on the DDR by calling all persons who actually participated in estimating the various materials discharged into the disposal area. That they failed to do, with the exception of Mr. Rice.
In his testimony, Mr. Rice explained that for the first three months following commencement of the dredging (January 19, 1980), Mr. Nathaniel Hutchinson (superintendent) was responsible for estimating the percentages of materials dredged each day for recordation on the DDR; that Mr. Hutchinson had a “fair amount of experience” in estimating materials; Mr. Stringer and Mr. Wright, who were Mr. Hutchinson’s assistants, were “worked with ... to help bring them up to a level where we felt that they could make these estimates”; after he (Rice) came on board, he “supervised their work”; that he (Rice) “would go out to the disposal area,” after he came on board, ‘“every second day to every fourth day when I was on the job site”; and he stated “I believe so” when asked if Weeks’ personnel were estimating accurately the percentages of materials to be recorded on the DDR.
The foregoing testimony of Mr. Rice also leads us to find the following operative factual circumstances to obtain, which we feel bears critically on the credence this court should give to the DDRs. First, we note that plaintiff failed to call Messrs. Hutchinson, Stringer, and Wright, who were its employees, and, failing such, did not explain these omissions. Certainly, their testimony, if consistent, would have corroborated the DDR on which they estimated the materials, and it would have also dispelled any misgivings of the court with respect thereto. Plaintiff also failed to proffer any definitive evidence regarding said persons’ estimating qualifications, as well as the number of days each actually was at the disposal area and “eyeballed” his estimate of the various dredged materials.
In the same regard, while Mr. Rice’s total testimony covers over 1,000 pages of the transcript, he failed to testify as to the number of days Messrs. Hutchinson, Stringer, and Wright were at the disposal areas, if any, at which time they effected “eyeball estimates” of the dredged materials. Moreover, Mr. Rice even failed to testify as to the number of days, out of the 818 dredge days, that he was actually present at a disposal area and effected “eyeball estimates” of the discharged materials. Mr. Rice also did not testify as to the reasons for the absence of the testimony of Messrs. Hutchinson, Wright and Stringer. While we note that Mr. Rice signed the majority of the DDRs, we do not find this circumstance to be conclusive or even probative of the fact that he performed the “eyeball” percentage materials estimates for those days or even that he visited the disposal areas on such days.
Not surprisingly, plaintiff appears to rely on the credibility of Mr. Rice as supervisor and “sometimes estimator” to fill the gap in this regard. However, that argument is fundamentally flawed because the evidence is clear that Mr. Rice visited the site only two to four times a week, and was absent from the site for various indeterminant periods. For all we know, Mr. Rice was away from the site more than he was there. Evidence as to his continuous presence, and/or when, where, and how he trained his substitutes, as well as when and whether they were even present during all of his absences, is simply not in the record. That plaintiff clearly possessed this critical evidence can hardly be doubted. Why it did not present it we will never know. However, against this background, such a circumstance requires an inference that had plaintiff done so, said testimony would have been unfavorable to plaintiff’s case and we so find. Cf. The Steamer Southern Belle, 59 U.S. (18 How.) 584, 15 L.Ed. 493 (1855); Contract Master Services, Inc., et al. v. United States, 225 Ct. Cl. 735 (1980); Kavaros Compania Naviera S.A. v. Atlantica Export Corp., 588 F.2d 1, 9-10 (2d Cir.1978); United States v. Fields, 102 F.2d 535, 537-38 (8th Cir.1939); Barnett v. United States, 6 Cl.Ct. 631, 671 (1984). In view of the foregoing, we are constrained to conclude that plaintiff’s daily dredge reports are inherently unreliable as creditable proof of the subsurface conditions actually encountered,
d. Defendant’s RUSCC 36 Admissions
Despite plaintiff’s many failures of proof with regard to subsurface conditions noted supra, we have yet to address the impact of certain admissions made by the defendant pursuant to RUSCC 36.
Request for Admission No. 6: Admit that Weeks dredged a total quantity of Eutaw of the project greater than that indicated by the contract boring logs. Defendant’s Response to Request No. 6: Admits that Weeks reported a total quantity of Eutaw on the project greater than that indicated by the contract boring logs, within the pay template volume, (emphasis added).
Plaintiff claims that defendant’s response is an unequivocal admission that Weeks encountered a differing site condition for excess eutaw.
Plaintiff makes a similar claim with regard to a second alleged admission as well:
Request for Admission No. 7: Admit that Weeks dredged a percentage of eu-taw greater than that indicated by the contract boring logs.
Defendant’s Response to Request No. 7: Admits that Weeks dredged a percentage of Eutaw greater than that indicated by the contract boring logs, within the pay template.
The parties are at odds regarding the meaning of defendant’s somewhat ambiguous statement. The confusion stems from the extent to which the final phrase “within the pay template” delimits where the greater percentage of eutaw was dredged, compared to where the contract borings indicated it would be found. As discussed supra, the need for symmetry in identifying the correct contract site — for purposes of proving both expected and actual conditions — is perhaps the critical issue presented by this case. Defendant would argue that admission no. 7 does not establish the requisite symmetry, i.e., that plaintiff dredged a greater percentage of eutaw within the pay template. Rather, defendant would contend that the admission relates to all the areas where plaintiff dredged eutaw, including overdredging. Plaintiff, on the other hand, would take the position that admission no. 7 admits that plaintiff dredged a greater percentage of eutaw “within the pay template.” As noted, it is a question which depends on the extent to which the words “within the pay template” do or do not modify the phrase “dredged a percentage of eutaw greater.”
While we find defendant’s interpretation fully reasonable, we nonetheless cannot dismiss as unreasonable the interpretation of the plaintiff. Given this apparent ambiguity, we are forced by the standard principle of contra preferentem to construe this ambiguity against its drafter, the defendant. For this reason, we are constrained to agree with the plaintiff that defendant has admitted that Weeks encountered a differing site condition for excess eutaw. Accordingly, as RUSCG 36(b) requires:
Any matter admitted under this rule is conclusively established unless the court on motion permits withdrawal or amendment of the admission.
To date, defendant has made no such motion to withdraw said admission. Based on
Where this leaves the plaintiff with regard to element (iv), however, is not in as good a position as one might anticipate at first blush. This is so because, as the case law clearly requires, not only must the actual conditions differ from those indicated in the contract borings, but that difference must be material as well. As is plain from our quote of the defendant’s admission supra, that admission is limited to establishing only that plaintiff dredged a “percentage of Eutaw greater” than indicated in the boring logs, but not necessarily one materially greater. This gap, in turn, brings us back full circle to relying on the proven percentage of eutaw derived from the daily dredge reports to gauge its materiality. As noted supra, such data from the daily dredge reports, given the unique facts of this case, is inherently unreliable and, therefore, cannot serve as a basis to carry plaintiff’s burden with respect to materiality. Accordingly, notwithstanding defendant’s admission, plaintiff fails as to this element of its excess eutaw claim as well.
(v) The Foreseeability of the Actual Subsurface Conditions Encountered
The fifth element of plaintiff’s differing site condition claim relates to whether or not the particular site conditions which
Our primary concern under this element revolves around plaintiffs allegation that it was reasonably unforeseeable that it would have encountered any gravel substantially in excess of its 8.1% figure for expected gravel. We reject this contention based on the very same collateral facts regarding gravel in-flow and materials deposits which caused us to conclude that this 8.1% estimate was unreasonable in the first place. See discussion supra. In addition, we note for the record, but do not find, certain facts in evidence which would tend to suggest, contrary to the plaintiffs position, the possible existence of gravel in excess of one inch in size. Lastly, we are in accord with the plaintiff to the extent it alleges that a reasonable contractor would not have foreseen quantities of eutaw in excess of those discernible from a reasonable interpretation of, and reliance on, the contract boring logs.
Prior to our discussion of the foreseeability of each encountered condition infra, we begin with a brief review of the site investigation plaintiff undertook prior to preparing and submitting its bid. As is quite clear from Mr. Rice’s testimony, plaintiff’s site investigation was organized almost solely with a view toward resolving certain anticipated logistics problems. This preoccupation with logistics, in contrast to !a concern over gathering information about subsurface conditions, is manifested rather persuasively by the scope of Mr. Rice’s investigation. In this regard, the record reflects that Mr. Rice physically inspected roughly only one-third of the approximately 30-mile site; made his inspection by foot to only a few accessible portions of the river bank; failed to procure a boat to traverse the entire river channel and view all exposed portions of the river bank; failed to contact or interview any adjacent land owners, gravel operators, or other dredge contractors in reasonably contiguous portions of the river regarding subsurface materials; failed to visit or consult appropriate sources of public information established for the very purpose of gathering and maintaining geological and meteorological data for the Ten-Tom area, and even failed to consult with local Corps officials regarding what their experience may have been in overseeing past projects in the Ten-Tom area.
a. The Foreseeability of “Excess" Gravel
Plaintiff’s estimate of 8.1% expected gravel was, therefore, based primarily,
These facts to which we are referring have been discussed in detail supra, and will not be repeated here in detail. We believe it sufficient to state that the critical omission, inter alia, on the plaintiffs part was — not contacting the many surrounding gravel operators. The testimony indicates “any one” of these individuals could have told plaintiff of the significant tributary gravel flowing into the Ten-Tom at the north end of plaintiffs project site. More importantly, defendant’s expert testified that they could have told Mr. Rice that this tributary gravel would most likely be found deposited along the inside banks of meanders in the river. Mr. Rice testified that he knew of these many operators, but gave no reasonable explanation as to why he did not contact them. The court is mindful of the fact that defendant did not call any gravel operators to testify regarding their operation and what they would have specifically told Mr. Rice regarding gravel had he inquired. However, given that there were numerous commercial gravel operators seeking profit therefrom, and the opinion of defendant’s expert noted supra, the inference is reasonable that substantial gravel deposits existed in the area.
Had he obtained all such relevant information, Mr. Rice could have readily determined that since the vast majority of Weeks’ dredging in the northern half of the site consisted of dredging materials deposits along the inside banks of meanders in the river, large quantities of gravel would reasonably be anticipated. Moreover, using such information, he could also have readily observed that the boring logs were not a “snap shot” of these gravel build-ups because the gravel was deposited by the river flow itself, and not likely to show up in borings taken inland from the river banks. Mr. Rice did not adjust his bid to take into account these clearly foreseeable gravel deposits (which deposits likely account for why approximately 78% of the claimed excess gravel was found in the northern end of plaintiff’s project) because he failed to act reasonably by investigating the surrounding gravel operations.
Plaintiff’s failure to conduct a reasonable site investigation and contact the surrounding gravel operators is, in substance, not unlike the failure of the plaintiff to conduct any site investigation in the case of Blauner Construction Company v. United States, 94 Ct.Cl. 503 (1941). In Blauner, plaintiff sought an equitable adjustment due to changed conditions allegedly encountered while engaged in digging a building foundation. It had based its bid estimate of subsurface conditions entirely upon the drawings of four borings supplied by the government, and undertook no site investigation, despite a contract clause urging it to conduct a thorough one. When
Plaintiff had ample notice and was warned in the specifications to visit the site of the proposed building, and the information given by the defendant before the bids were placed was simply for the purpose of letting plaintiff know of certain conditions which might be met upon excavation of the site. Defendant held nothing back from the plaintiff. There was no misrepresentation on the part of the defendant. There was simply a miscalculation on the part of the plaintiff of the difficulties to be encountered, which could readily have been ascertained by a visit [as to Weeks a reasonable visit] to and examination of the site.
____ Where a contractor has miscalculated, and, through its own negligence in not examining the site, has failed to take into consideration conditions which actually existed and which had been called to his attention in the specifications by a warning to visit the site, and sustains a loss, no claim arises.
Id. at 510-11 (emphasis added; citations omitted). Like Blauner, Weeks relied totally on the information in the boring logs unsupplemented by critical evidence of “conditions which actually existed” which was readily available to it through a reasonable site investigation.
In defending its site investigation, plaintiff has made much of the fact that the case law holds that a contractor need not conduct its own surveys or borings, nor hire its own geologist and geotechnical engineer. We thoroughly agree. See Stock & Grove, Inc. v. United States, 493 F.2d 629 (Ct.Cl.1974); Morrison-Knudsen Co., 345 F.2d at 535. Plaintiff is, however, held accountable to discover and pursue reasonable indications, as here, which would put a reasonable and prudent contractor, experienced in dredging, on notice that there may be subsurface conditions different than those indicated in the contract boring logs. We believe that evidence of extensive commercial gravel operations, in such close proximity to plaintiff’s site, was a significant factor constituting such notice (not to mention Mr. Rice’s admitted knowledge of their existence).
Mr. Rice’s failure to. contact these commercial operators, contrary to the contentions of the plaintiff, has nothing to do with its failure to hire a geotechnical engineer. We agree that the case law holds, in that regard, that the contractor is not required to “reinvent the wheel.” Rather, creditable evidence in the record establish
b. The Foreseeability of “Oversize” Gravel
As with its estimated quantum of gravel expected, plaintiff’s estimate of size of gravel expected was also based on the information contained in the contract boring logs. At trial, plaintiff stated that it expected to encounter 4 to 5 percent of one inch gravel, approximately one percent of one and one-half inch gravel, and minute amounts of two to three inch gravel.
Such an argument has been held to be a non sequitor by the Corps’ own board of contract appeals. Bernard McMenamy Contractors, Inc., ENG BCA No. 3413, 77-1 BCA ¶ 12, 335 at 59, 633-34. This argument has two sides, however. On the one hand, it is reasonable to argue that the Corps chose a 1 3/8-inch sampler because it anticipated a certain size of gravel. This leads up to the inference that the Corps knew something about the subsurface conditions prior to taking these samples. On the other hand, there is no conclusive creditable evidence that the Corps knew anything about the subsurface conditions (i.e., gravel sizes), other than as manifested, when it chose the 1 3/8-inch sampler. And absent such, it would be arguably unreasonable for a contractor to assume this on its own and expect larger size gravel. While we do believe sampler size can, in some circumstances, be a positive indicator of expected subsurface conditions, the better approach is that no conclusive inference about the subsurface conditions can be drawn from the Corps’ choice of sampler size absent some evidence to suggest that the Corps indeed knew something positively about the size of the gravel when it chose the 13/8 inch sampler. That fact the government has neither argued nor established. We thus find no probative evidence to warrant a conclusion that Weeks should have foreseen substantial oversize gravel.
c. The Foreseeability of “Excess” Eutaw
Plaintiff’s estimate of expected eutaw was similarly based on the information contained in the contract boring logs. It anticipated no eutaw beyond that which it perceived was indicated in the boring logs, and there is no creditable evidence to suggest that plaintiff should have anticipated more. While it is true that plaintiff misread one boring log to indicate no eutaw, when it in fact did indicate eutaw, this clerical error does not change the correctness of the plaintiff’s ultimate conclusion, and the evidence in the record, that no further eutaw
The government disputes this estimate by arguing that Weeks should have foreseen excess eutaw based on Weeks’ anticipated overdredging.
(vi) Were the Excess Costs Claimed Caused By The Materially Different Contract Site Conditions?
The sixth and final element of plaintiff’s differing site condition claim is one which plaintiff itself does not specifically posture as a separate element. It is, however, one which plaintiff does address in its discussion of the “materiality” of the differing site conditions it encountered. Given the teaching of Klingensmith, supra, we adopt this criterion as a separate element, focusing expressly upon the question — whether the contractor has specifically proven that injury to it did, in fact, directly result from encountering the alleged differing site conditions. See Saunders Construction Co. & Kay Kizer Construction Co. v. United States, 618 F.2d 121, 220 Ct.Cl. 639, 641 (1979); Stuyvesant Dredging Co., 11 Cl.Ct. at 858. In this regard, we must be careful to focus only on those damages directly attributable to the alleged differing site condition, and not on those damages for which concurrent causes, stemming from the plaintiff’s own making, are equally to blame. Klingensmith, 731 F.2d at 809. It is for the plaintiff to show, by probative evidence, which separate causes by the government result in which identifiable periods of delay, before it can be said that plaintiff has carried its burden with respect to causation. Id.
Plaintiff has attempted to prove its injury, due to the alleged differing site conditions, by arguing that any and all days worked beyond its ex post facto averred best time estimate of 413 days (estimated in June 1983) are compensable days attributable collectively to the four encountered differing site conditions (excluding, of course, the stump claim for which plaintiff has already been compensated, and the time extension due to flooding). Plaintiff arrives at its alleged residual uncompensated 195-day figure by working backward from the figure for total dredging days on the project (i.e., 818 days), minus its ex post facto best time estimate had there been no differing site conditions (413 days), minus the stump claim extension (174 days), and minus the flooding extension (36 days). In essence, plaintiff is blandly arguing that — but for the collective effect of the four differing site conditions ard the flooding, it would have completed the project in 413 days. Therefore, plaintiff concludes, inasmuch as the uncompensated differing site conditions were causes for which the government assumes liability, it is liable for the excess costs plaintiff incurred in those 195 days as a result of these causes. In theory, there is a certain fleeting logic to the plaintiff’s position.
The problems with this “collective” reasoning approach, however, are many. First, the government has argued the existence of other concurrent causes, of the plaintiff’s own doing, which it alleges caused the plaintiff to require the additional 195 dredging days to complete the project. If this is the case, even were there
Defendant has argued three general categories of concurrent causes. The first is plaintiff’s failure to dredge at production rates (measured in cubic yards of dredging per hour) even close to those rates it estimated and used in preparing its bid. The second is the lengthy record of work stoppages and delays occasioned by repairs to the dredge Venture. The third is the extensive amount of the plaintiff’s admitted overdredging (at least 25%). We believe that given the undifferentiated nature of the plaintiff’s proof, it is sufficient for defendant to overcome the plaintiff’s showing of causation were only one of these three causes shown to be supported by the evidence. Such is the case because, as noted supra, plaintiff has provided no creditable evidence of the number of uncompensated days attributable to even one differing site condition independent of the alleged concurrent causes. On that basis, as discussed infra, we believe the evidence of plaintiff’s substandard productivity rates to be a most persuasive concurrent cause sufficient in magnitude to persuasively discredit any notion that plaintiff could have attained the 413 (ex post facto) day anticipated completion schedule absent the alleged differing site conditions. Accordingly, any further discussion of defendant’s other alleged concurrent causes is rendered unnecessary. (By this approach, we are not holding that the evidence is not probative regarding the remaining averred concurrent causes.)
The evidence regarding the productivity rates we rely on in order to find the existence of said concurrent cause derives from the plaintiff’s daily dredge reports. It is the same evidence we described supra as inherently unreliable, and so highly speculative that it was incapable of serving as a probative basis for the plaintiff’s claimed differing site conditions. It is critical to note, however, that what we state hereinafter does not in any way reflect a change of our finding as to the lack of credibility inherent in the daily dredge report data with regard to the quantum of each subsurface material actually dredged. However, with respect to the recorded production rate thereon, we simply assume for the sake of argument that even were this data as accurate as the plaintiff claims it is relative to the production rates actually obtained, it would, in fact, demonstrate the substandard productivity of the dredge Venture when compared with plaintiff’s estimated rates. Our focus is, therefore, that even in giving the plaintiff the benefit of the doubt as to the accuracy of its actual production rate data, it nonetheless belies the plaintiff’s assertion — that it could have completed the project in 413 days; and that, therefore, all uncompensated days are due to the existence of the alleged differing site conditions.
Productivity for a dredge project can be effectively measured by comparing the rates at which the contractor expected to dredge in order to complete the project within the estimated time frame, and those which the contractor actually obtained in the time it actually took to complete the project. In other words, the question is, using hindsight, was the plaintiff’s ex post facto estimated completion days (requiring 413 days) a reasonable projection in terms of the productivity rates achieved versus those expected. We believe not. For the entire project, plaintiff’s bid reveals an estimated overall production rate of approxi
The same is true for plaintiffs individual production rate for dredging gravel. Plaintiffs bid worksheets show expected rates for dredging gravel, depending upon the conditions of the cut, ranging from 455 to 750 cubic yards per hour.
A similar deficiency in productivity is exhibited with respect to plaintiff’s production rates for dredging sand and clay. For sand, plaintiff’s bid papers show an expected productivity rate of 1,500 cubic yards per hour, except for one cut area where plaintiff expected a sand productivity rate of 995 cubic yards per hour.
For dredging clays, plaintiff’s bid worksheets show expected production rates ranging from 373 to 1,000 cubic yards per hour, with most cut areas registering in the 1,000 cubic yards per hour range.
Lastly, there are the plaintiff’s production rates for dredging eutaw. Plaintiff’s bid papers reveal an expected productivity rate for dredging eutaw of 15Q cubic yards per hour.
In sum, the foregoing picture of approximate actual productivity rates versus expected rates tells an interesting story of what the dredge Venture was and was not capable of doing. Yet despite this proof, plaintiff still clings to its belief that it could have completed the project, but for the
C. Interest on the Now Settled Stump Claim
As its second cause of action, plaintiff seeks interest on a June 26, 1984 settlement award from the Corps which arose out of an equitable adjustment plaintiff filed in October of 1982 alleging a differing site condition for unanticipated stumps and logs encountered during dredging on the Ten-Tom project.
Defendant has objected to this claim on three grounds: (1) the Court of Appeals for the Federal Circuit has specifically held that the submission of a DD Form 633, contemporaneous with a claim, does not fulfill the certification requirement of the CDA; (2) plaintiffs settlement agreement is a binding accord, which has been satisfied through payment to the plaintiff and estops plaintiff from now seeking any additional interest on the settlement amount; and (3) FAR § 49.112-2(d) prohibits the government from paying interest on the amount due under a settlement agreement. Defendant is quite correct that in the case of ReCon Paving, Inc. v. United States, 745 F.2d 34 (Fed.Cir.1984), the Federal Circuit specifically held that a “ ‘Certificate of Current Cost or Pricing Data’ [a DD Form 633] does not meet the requirements of Section 6(c),” the CDA certification requirement. Id. at 40. Thus, we need look no further for a basis to reject the plaintiff’s claim for additional interest. ReCon bars the plaintiff’s claim notwithstanding any decision we might reach as to accord and satisfaction, or the regulations. Therefore, we rest our decision rejecting plaintiff’s claim solely upon the holding in ReCon.
Y. Conclusion
At first reading, our judgment in this case would appear to rest on multiple holdings involving numerous legal issues. A closer reading would reveal, however, that for all the detail, one definitive fundamental reason underlies our rejection of the plaintiff’s petition for an equitable adjustment, i.e., failure of proof. That failure of proof is seen most dramatically to the extent of plaintiff’s reliance upon the daily
Beyond the foregoing fundamental failure of proof, our findings have, nevertheless, dealt with other critical failures in the plaintiff’s case. These include primarily the plaintiff’s flawed attempt to rely on the alleged existence of contract indications as to the quantum of each type of subsurface material, which did not exist; the underlying unreasonableness of the plaintiff’s conduct in preparing its bid and the failure to adjust for the risks associated with its several assumptions; the unreasonableness of the plaintiff’s pre-bid site investigation and the failure to seek out information readily available to it from which a reasonable contractor would have foreseen its bid estimate for expected gravel was suspiciously low; and lastly, the dredge Venture’s substandard productivity and the plaintiff’s failure to provide a method of separating the delay due to this concurrent cause from the delay encountered due to the alleged differing site conditions.
Lastly, we have also rejected plaintiff’s claim for interest on the stump claim settlement award as being barred by binding precedent of the Court of Appeals for the Federal Circuit.
For the reasons just noted, and all those reasons postulated supra, we are constrained to enter judgment for the defendant directing the Clerk to dismiss the plaintiff’s petition with prejudice. Costs to the prevailing party.
IT IS SO ORDERED.
. See Orders dated: September 11, 1986; September 23, 1986; September 29, 1986; October 8, 1986; October 27, 1986; December 8, 1986; and June 1, 1987.
. The Tennessee-Tombigbee Waterway joins the Tennessee and Tombigbee Rivers to form a continuous water route stretching from Kentucky to the Gulf of Mexico, parallel to the Mississippi River. The Waterway crosses the states of Tennessee, Missouri, and Alabama. For more detailed background and history, see Patterson, The Tennessee-Tombigbee Waterway: Bounty or Boondoggle?, National Geographic, March, 1986, at 364.
. Eutaw is a soil material found primarily in the southern United States. It is a compacted gray, clay-like material which is often very hard. Joint Glossary of Technical Terms (JG1) filed July 29, 1986 at 8; Tr. at 573-74.
. Boring logs are the recorded data depicting the boring samples, and usually describe the boring samples by words and symbols. Borings are a field sampling procedure whereby subsurface soil information is acquired through drilling or driving a sampling device. The boring logs may state the depths of the various materials, depth of the boring sample, location and top elevation of the boring hole, and any other gathered information. JG1 at 1-2.
. See Plaintiffs Exhibit (PX) 1 at appendix.
. See Defendant’s Exhibit (DX) 7.
. This post-dredging test pit study included samples taken from five “spoil" areas — the areas into which dredged material was dumped— which were then analyzed and used as a basis to estimate the quantities of the various dredged materials which actually existed in certain cut areas below the surface of the river prior to dredging. See PX 40; DX 79; Tr. at 3292-3350, passim.
. In a Motion For Leave To File A Supplemental Brief filed on June 29, 1987, plaintiff sought to preclude defendant from defending on said grounds allegedly because “[d]efendant raised [said] issue in closing argument which it never previously asserted." The court by its order dated July 2, 1987, denied plaintiff’s foregoing motion (in spite of the fact that plaintiff conceded that "defendant’s allegation is potentially a bar to any recovery”) because it found that defendant clearly and unequivocally raised said issue in both its pre- and post-trial submissions.
. Tr. at 59-60.
. Tr. at 160, 164, 168; Joint Stipulation (JS) ¶3.
. Tr. at 68.
. JS ¶ 4.
. Tr. at 465.
. Tr. at 493, 479.
. Tr. at 489-92, 918-19.
. Tr. at 578.
. JS ¶ 6.
. JS ¶ 6.
. Tr. at 349-60.
. Tr. at 361, 363.
. JS ¶ 23; Tr. at 344.
. See PX 1; see supra note 2.
. See PX 1, PX 20, PX 21.
. JS ¶ 26. The actual dredging within this 30 mile stretch, however, was some 16.78 miles. JS ¶ 60.
. JGI If 15.
. JGI ¶ 16.
. PX 1 at 2A-10, ff 10.3. Section 10.3 provides, in relevant part: "10.3 Excessive excavation: Material taken from beyond the limits as extended in the Paragraphs: Overdepth and Side Slopes above will be deducted from the total amount excavated as excessive overdepth excavation or excessive side slope excavation for which payment will not be made____”
. JGI 1121.
. JGI ¶ 14.
. See Definitions JGI f s 14, 21.
. PX 1 at BS-1.
. JS U 52.
. JS ¶ 53.
. JS ¶ 39.
. Tr. at 76.
. Tr. at 616-17; JS ¶ 58.
. JS ¶ 58; Tr. at 626, 629.
. Tr. at 616-648.
. Tr. at 630-31.
. Tr. at 1084, 1100.
. Tr. at 648; PX 17.
. Id.; Tr. at 656.
. Joint Glossary at p. 5, ¶ 32, defines the USCS as: “A system of soil classification based, in large part, on soil grain size characteristics.” The USCS's descriptive terms assume a quantitative range in its definitions. For example, a subsurface material, i.e., "sand" preceding a descriptive term such as — “some,” "little," or "trace” followed by the noun “gravel” contemplates a range of 20% to 35%, 10% to 20%, and 1% to 10%, respectively, of gravel.
. Tr. at 691-700; PX 18; PX 19.
. Tr. at 672.
. See PX 17.
. Tr. at 691-700; PX 18; PX 19.
. PX 26.
. Tr. at 709; PX 22.
. Tr. at 721-23.
. Id.
. Id.
. Tr. at 726-27.
. Tr. at 720, 742-43.
. Tr. at 719-50; PX 22, columns 3-6, 14.
. PX 22, columns 15, 16.
. Id.
. PX 22, columns 15 and 16; Tr. at 720.
. PX 22, columns 15 and 17 ("yardage governs"); Tr. at 748-50.
. PX 22, column 15.
. PX 22, columns 16 and 17 ("advance governs"); Tr. at 750-53.
. PX 22, column 16.
. PX 22, column 18.
. Tr. at 753.
. Tr. at 754.
. Tr. at 764.
. Id.; 24 hours a day minus 15.93 dredge hours equals 8.07 hours down time per day.
. PX 22, p. 5.
. PX 22, p. 5; Tr. at 763-64. These contingencies consisted of one additional day per month for breakdowns, and an additional 16 hours for each of 16 "major moves” of the dredge along the river. Lastly, the record reflects that Weeks, in fact, revised its dredge time estimate once again after being awarded the contract, i.e., four-tenths (.4) of a month was subtracted as Weeks later hired a subcontractor who worked contemporaneously with Weeks to complete dredge work on one marina area along the project. Id.
. JS ¶ 39.
. JS ¶ 25.
. JS ¶ 39.
. Tr. at 71.
. Tr. at 581.
. Id.
. Tr. 581-82.
. Tr. at 582.
. Tr. at 589.
. Tr. at 590.
. Tr. 107-08.
. Tr. at 591.
. Tr. at 591.
. Tr. at 590-92.
. Tr. at 112.
. PX 3.
. Tr. at 103.
. Tr. 104.
. DX 13.
. Tr. at 104.
. Tr. at 598.
. Tr. at 597.
. Tr. at 105.
. JS ¶ 39.
. Tr. at 122, 1461-62.
. Tr. 603-09.
. Id.
. Tr. at 608 (Rice), 366 (Harris).
. JS ¶ 40.
. JS ¶ 52.
. Id.
. JS 1153.
. Tr. at 837, 759-60, 845.
. Tr. at 907-09; 413 days divided by 30 days per month = 13.76 months.
. PX 1 at 1A-1 ¶ SP-5.
. See n. 104, supra.
. JS ¶ 40.
. PX 62 at Report for June 7-11, 1979.
. PX 31.
. Id.
. Tr. at 858; PX 31.
. PX 31.
. See PX 62, Reports for November, 1979 through January, 1980; PX 34, Report for January 20, 1980.
. PX 34, Report for January 20, 1980.
. PX 31.
. PX 34, Report for April 16, 1982.
. PX 31.
. PX 34, Report for July 30, 1982.
. PX 34; Tr. at 867-68.
. Tr. at 867, 882; PX 1 at 14.1 ¶56.
. PX 62; Tr. at 2213-15.
. PX 62.
. PX 34.
. Tr. 876-78.
. Tr. at 876.
. Tr. at 876-77.
. Tr. at 877.
. Id.
. PX 22; Tr. at 764.
. PX 34 reflects 818 daily dredge reports, of which approximately only 428 show daily running time of 15.93 hours or better.
. This figure does not refer to routine maintenance, such as moving of the dredge, changing pontoons, or minor breakdowns such as changing cutter head teeth. See PX 34. This 44.1% figure reflects downtime on "repairs” specifically designated as such and requiring a minimum of one hour each to complete.
. Tr. at 891.
. See PX 34. This category includes delays due to logs, stumps, and high water.
. Not necessarily within the maximum pay template, however.
. PX 62. These reports reflect the official observations of the Corps throughout the period of the contract.
. See PX 62, Report nos. 243-49; 271-77; 329-30; 479-85; 519-23; 661-62; 686-92; 700-01; 714-15; 720-24; 738-42; 784-86; 794-96; 871-78; 886-93; 901-04; 908-16; 932-49; 953-60; 961-67; 968-75; 976-80.
. Defendant has made a general admission with respect to the area of the pay template {see infra text at note 311), and a specific admission with respect to cut area 9 only in its pretrial submission, ¶ 83 at p. 22, and cut areas 19 in PX 68.
. See PX 68; the admission of gravel appears to relate to Cedar Creek Cutoff; and that for oversize gravel to cut areas 14, 15, 18, and 19.
. See DX 7.
. See DX 20.
. DX 7.
. Id.
. Id. While the merits of Weeks’ stump and log claim is not before the court, Count II of plaintiff’s petition, which is before this court, does seek additional interest on the stump and log claim running from October 29, 1982 through July 5, 1983.
. See DX 20.
. Id.
. Id.
. See DXs 2, 3, 4, 5, 8, 9.
. DX 6.
. DX 6. This revised submission, coming before the settlement of the stump and log claim, also contains reference to the delay due to stumps and logs.
. DX 20.
. Plaintiffs Complaint ¶ 17; Defendant’s Answer ¶ 17.
. This 215-day figure was subsequently revised downward to 195 days at trial and in the plaintiff’s post-trial submission and proposed findings of fact.
. Following the trial, plaintiff revised its ad damnum relative to the equitable adjustment to $3,599,171.72. For additional details relative to the trial, see Weeks Dredging & Contracting, Inc., 11 Cl.Ct. 37 (1986).
. Plaintiff’s Post-Trial Submission (PPS) at 119, citing Dunbar & Sullivan Dredging Co., ENG BCA 3165, 73-2 BCA ¶ 10,285 (1973); P.J. Maffei Building Wrecking Corp. v. United States, 732 F.2d 913, 917 (Fed.Cir.1984); Morrison-Knudsen Co. v. United States, 345 F.2d 535, 539 (Ct.Cl.1965); Foster Construction C.A. of Williams Brothers Co. v. United States, 435 F.2d 873, 893 (Ct.Cl.1970); Farnsworth & Chambers Co. v. United States, 346 F.2d 577, 580-81 (Ct.Cl.1965).
. PPS at 120.
. Id.
. Id.
. PPS at 121 citing Fox v. United States, 7 Cl.Ct. 60, 65 (1984); Foster Construction, 435 F.2d at 888, citing United Contractors v. United States, 368 F.2d 585, 598, 177 Ct.Cl. 151 (Ct.Cl.1966). Plaintiff posits alternatively that the contract boring logs could be similarly interpreted as statements of general conditions, Rottau Electric Co., ASBCA No. 20283, 76-2 BCA ¶ 12.001 (1976), or that the requisite representations of subsurface conditions could be found by implication in the contract documents taken as a whole, Stock & Grove, Inc. v. United States, 493 F.2d 629, 645, 204 Ct.Cl. 103 (Ct.Cl.1974).
. PPS at 128 quoting Maffei Building Wrecking Corp., 732 F.2d at 917, quoting H.N. Bailey Associates v. United States, 449 F.2d 387, 390, 196 Ct.Cl. 156 (Ct.Cl.1971).
. Id.
. PPS at 122.
. PPS at 122. The court notes, however, that Mr. Rice candidly admitted that he did not consider all of the boring logs in arriving at his estimate. He stated that some 15 plus or minus logs were not used. Tr. at 673, 1174.
. PPS at 122-23.
. Id. at 123.
. PPS at 124.
. Id.
. PPS at 124.
. PPS at 125.
. PPS at 125. Weeks adds that: "Because the total quantities of materials were substantially reduced by flooding, and the Venture had a greater productivity than the typical 24 inch dredge assumed in the Bid Estimate, Weeks could have finished the dredge work in 413 days — provided the subsurface conditions were as represented in the Contract.” Id. at n. 60.
. See Dr. Kondner’s background and proffer, Tr. at 1517-31.
. PPS at 126.
. Id.
. PPS at 126-27.
. Id. at 126.
. Tr. at 836.
. Tr. at 836.
. PPS at 127.
. Id.
. PPS at 127.
. Id. at 130.
. PPS at 131 citing Fox v. United States, 7 Cl.Ct. at 65; Foster Construction, 435 F.2d at 888; United Contractors, 368 F.2d at 598.
. Id. at 131-32 quoting Foster Construction, 435 F.2d at 887.
. PPS at 132.
. Id. at 133.
. PPS at 133.
. Id. at 133-34.
. PPS at 137, quoting Foster Construction, 435 F.2d at 893.
. PPS at 134.
. Id.
. PPS at 134.
. PPS at 135-36.
. Id. at 136.
. PPS at 136.
. Id. at 137.
. Granite-Groves, A Joint Venture, ENG BCA Nos. 3977, 4033, 79-2 BCA ¶ 14,078 (1979); Jackson-Swindell-Dressler, A Joint Venture, ENG BCA No. 3614, 76-2 BCA ¶ 12,222 (1976); Clement Brothers Co., ENG BCA No. 2969, 70-2 BCA 1f 8438 (1970); and Morrison-Knudsen Co., ENG BCA No. 3856, 3857, 79-1 BCA ¶ 13,798 (1979).
. PPS at 138.
. Id. at 139, quoting Bernard McMenamy, 77-1 BCA at 59,635.
. PPS at 139.
. Id. at 139-40.
. PPS at 141.
. Id.
. PPS at 141. Again, relying on Bernard McMenamy Contractors, Inc., plaintiff adds that in this regard "the Corps’ Board of Contract Appeals has specifically cautioned against using an overly expansive application of pre-bid site investigation requirement to undermine the Differing Site Conditions Clause.” PPS at 144.
. PPS at 144. Plaintiff argues further that the government’s "failure to present any such contradicting evidence completely and wholly refutes their defense that Weeks’ pre-bid site investigation was inadequate.” Here plaintiff cites Alps Construction Corp., ASBCA No. 16966, 73-2 BCA ¶ 10,309 (1973); John G. Vann v. United States, 420 F.2d 968, 190 Ct.Cl. 546 (Ct.Cl.1970); Bernard McMenamy Contractor, Inc., 77-1 BCA at 59,635. Plaintiff also presents a review of the evidence relative to the proper measure of damages. However, inasmuch as we find no differing site condition liability on behalf of the defendant, because of failure of proof on behalf of plaintiff, we do not address plaintiffs contentions as to the alleged amount of damages.
. PPS at 149.
. Id.
. PPS at 149.
. Id.
. PPS at 149-50. We address the question of certification relative to the calculation of statutory interest only as it relates to the previously settled stump claim. Outside of that context, because plaintiff has failed to prove liability as to the other alleged differing site condition claims, the interest issue is clearly moot.
. Defendant's Post-Trial Brief (DPB) at 3-4.
. DPB at 9.
. Id.
. DPB at 9.
. Id at 10. Defendant argues that "[fjurther-more, as Mr. Rice aptly pointed out, a three-quarter-inch piece of gravel could easily be mistaken for a two-inch piece by someone attempting visually to estimate its size without the aid of sieve analysis.” Id
. DPB at 10.
. Id.
. DPB at 11-12.
. Id. at 12-14.
. DPB at 14 quoting Fox v. United States, 7 Cl.Ct. 60, 65 (1984).
. DPB at 14-16.
. Id. at 14.
. DPB at 16-17.
. DPB at 17.
. Id.
. DPB at 17-18.
. Id. at 18-20. Defendant, in its brief, argues that had Weeks made this adjustment. Weeks’ percentage of anticipated gravel would have been 10.4 percent. Id. at 19-20.
. DPB at 21-22.
. Id.
. DPB at 21-22.
. Id. at 22.
. DPB at 22.
. Id.
. DPB at 22.
. See supra note 206.
. DPB at 22-23.
. Id. at 23-27.
. DPB at 23.
. Id. In support of the 592 day figure, the government argues that "[t]his estimate was prepared [July 10,1979] after Weeks had purchased the VENTURE and presumably was aware of the VENTURE’S capacity.” DPB at 23. In addition, defendant argues that it is a more credible estimate because it was not prepared by Weeks in support of its claim, as was the revised 413 day figure calculated in June or July of 1983, long after the project was completed and Weeks’ differing site condition claims had arisen. Id. at 23-24.
. DPB at 24.
. Id.
. DPB at 24-26.
. DPB at 25.
. Id. at 26.
. DPB at 26.
. Id. at 28 (citation omitted), quoting William F. Klingensmith, Inc. v. United States, 731 F.2d 805, 809 (Fed.Cir.1984).
. DPB at 29.
. Id. Defendant also addresses Weeks’ damages calculation in its post-trial contentions. However, as with the plaintiff’s contentions regarding damages, inasmuch as we find no liability on behalf of the government, we do not address them.
. DPB at 31.
. Id. at 32 citing Federal Acquisition Regulation 49.112-2(d).
. DPB at 32.
. PX 1 at General Provisions p. 1. Defendant has previously admitted timely notice. See Weeks Dredging, 11 Cl.Ct. at 37. As to the phrase "at the site,” we believe a reasonable interpretation thereof to obviously mean — “at the [contract] site.” See discussion, infra.
. Id.
. Proof by a "preponderance of the evidence” is defined by McCormick as proof "that the existence of the contested fact is more probable than its non-existence." McCormick, Handbook of the Law of Evidence 677 (1954). DeMarines v. KLM Royal Dutch Airlines, 580 F.2d 1193, 1200 (3d Cir.1978).
. Throughout this case, and in particular in its post-trial submission, plaintiff has argued vigorously that the purpose of a differing site condition clause is to “allocate[ ] directly to the government” “[t]he risk of subsurface operations.” PPS at 118. This is so, says plaintiff, because absent such an allocation, contractors would be forced to include substantial contingencies in their bids which would cause the government to pay more for a job where in fact such contingencies may very well not materialize. In this way, it says the differing site condition clause works to the government’s advantage in preventing inflated bidding while at the same time "shielding the contractor from the risk of loss for unforeseen subsurface condi-tions____” Id. citing Foster Construction C.A. v. United States, 435 F.2d at 887.
. See supra at 26.
. PX 1 at BS-1.
. Id.
. See PX 20.
. PX 1 at A-l (appendix).
. PPS at 121.
. PX 1 at A-l (appendix).
. Webster’s New Collegiate Dictionary at p. 206 (1976).
. See PX 16.
. See PX 17.
. Tr. at 661.
. Tr. at 661; compared with PX 16.
. Tr. at 658.
. Tr. at 670.
. See PXs 18, 19, and 25.
. See, e.g., PX 1 at A-l (appendix) logs for boring numbers 19A, 19B, 20, 20A, 20B, 21A, 2IB, 22A, 23, 23A, 24, 36, 41, 41A.
. See PX 1 at BS-1.
. "To hold otherwise would effectively render the Government unable to [provide] ... a potential contractor [with] ... possibly helpful information without undertaking to stand on” the reasonable use thereof. "If, on the other hand, the Government tried to protect itself from lawsuits such as this one by withholding a potential source of information, it might be found liable to a contractor for not disclosing its ‘superior’ knowledge. See, e.g., Hardeman-Monier-Hutcherson v. United States, 458 F.2d 1364 (Ct.Cl.1972). The Differing Site Conditions clause cannot be read to create such a pointless predicament.” P.J. Maffei, 732 F.2d at 918.
. Tr. at 661.
. Tr. at 670.
. In fact, plaintiffs expert Thomas Turner confirmed that this was a reasonable technique. Tr. at 1867-69. We are quick to note, however, that Mr. Turner does not address whether there should also be adjustments to take into account the obvious risks associated with this assumption. As noted infrfl, we do not quarrel with plaintiffs or Mr. Turner’s assessment of using this technique. Rather, we quarrel with the fact that neither plaintiff, nor Mr. Turner, acknowledges that the vast risks associated with this assumption should reflect an adjustment. In our opinion, a reasonable contractor utilizing such risky assumptions would adjust its bid quantities to take into account these risks.
. See PX 38. We use plaintiff’s recalculated figures here for demonstration purposes only.
. Id.
. See PX 16.
. Id.
. Tr. at 3177.
. Tr. at 3520-35.
. Id.
. The vast majority of borings are dated as having been taken in 1973-74, some five to six years prior to this contract. See PX 1 at appendix.
. Tr. at 1012-13.
. Id.
. Id.
. Tr. at 3177-78.
. PX 1 at General Provisions page 1.
. See PX 34; Transcript of Closing Argument, June 15, 1987, at p. 145.
. Tr. at 1481.
. See note 27 supra.
. Transcript of Closing Argument, June 15, 1987, at 146-47.
. Id.
. Tr. at 4598-99.
. Tr. at 4597 (Dr. Kondner).
. Tr. at 1165-66 and 1233.
. Id.
. See PX 18.
. PX 34.
. As to a similar observation made by the Corps of Engineers’ own Board of Contract Appeals, see Arundel Corp., 515 F.2d at 1120 n. 5.
. Tr. at 876-77.
. Id.
. See PX 34.
. Tr. at 1230-32.
. Tr. at 1228-33.
. Id.
. Id.
. Tr. at 879-81.
. Tr. at 878.
. Tr. at 1228.
. Tr. at 1233.
. Tr. at 1232.
. RUSCC 36 provides:
“Rule 36. Requests for Admissions.
(a) Request for Admissions. A party may serve upon any other party a written request for the admissions, for purposes of the pending action only, of the truth of any matters within the scope of Rule 26(b) set forth in the request that relate to statements or opinions of fact or of the application of law to facts*234 including the genuineness of any documents described in the request____
(b) Effect of Admission. Any matter admitted under this rule is conclusively established unless the court on motion permits withdrawal or amendment of the admission----’’
. PPS at 135-36.
. Through a reliance on allegedly “Contemporaneous, Internal Corps Documents,” plaintiff also seeks to bolster its conclusion that the Corps in some way "admitted" or "confirmed” its differing site condition claims. We cannot ascribe to these documents the ultimate effect the plaintiff desires. In the case of excess eu-taw, plaintiffs references, such as Plaintiffs Exhibits 64, 67 and 68, Defendant’s Pretrial Submission para. 83, and the testimony of Mr. Jan-gula (Tr. at 2289-90), all say little more than defendant’s admission no. 7, i.e., that plaintiff encountered excess eutaw, or unanticipated eu-taw, but none definitively resolves the question of materiality without further resort to the daily dredge report data. While several of these documents profess to recommend that plaintiff be compensated for this excess eutaw, these references are nothing more than the writer’s opinion, without any corroborating evidence as to a material amount of excess eutaw. As such, they are yet insufficient proof for this court to find materiality as a matter of law.
In addition, we would note that all of the documentary references are. taken from documents prepared, or evidence obtained, prior to the completion of plaintiffs project, and prior to when the reality of plaintiffs overdredging was fully uncovered (PX 64 dated 1981; PX 67 dated 1981; PX 68 dated 12/82, based on evidence obtained during the period of dredging). These particular references were therefore made without any of the authors knowing of the full impact of the overdredging or where the allegedly excess materials were actually encountered — within the contract site, or from the area of overdredging. On this basis, the probative value of these documents is greatly diminished by our current understanding of the true extent of plaintiffs admitted overdredging and plaintiffs complete inability to present any evidence on the precise conditions encountered exclusively within the contract site (maximum pay template).
The same is true with respect to plaintiffs alleged "Corp [ ] Admissions of Excess Quantities of Gravel” and “Oversize Gravel.” True, the documents and testimony cited (PX 68; PX 62 [reports of 11/81]; PX 74; Tr. at 2231-38; 2227-28; 2262-63) suggest two Corps employees’ bland opinions that Weeks was encountering unexpected or unanticipated excess quantities of gravel and oversize gravel. Once again, however, absent reliance on the daily dredge reports, there is no quantitative corroboration of the materiality element. Similarly, plaintiffs references are mostly to evidence obtained prior to the time the full extent of plaintiffs over-dredging was known or understood (not true with respect to PX 74 and defendant’s inspection of disposal sites revealing oversize gravel). These two circumstances, we believe, vastly diminish the significance of this evidence uncorroborated by reliable data of actual subsurface conditions within the maximum pay template, i.e., the relevant contract site.
Lastly, there is plaintiffs reliance on PX 40, the Corps’ test pit study, and PX 50, Dr. Kond-ner’s test pit analysis. Plaintiff claims that the materials estimates derived from these studies of several exhumed disposal areas compares closely with the data contained on the daily dredge reports. The relevancy of this observation is quickly put to rest when one considers that the two test pit studies do no better job in segregating the materials taken from the maximum pay template from those encountered during overdredging than the plaintiffs own dredge reports. On this basis, we do not believe that the test pit studies, whatever their results, truly corroborate anything of import relative to the plaintiffs burden of establishing the precise conditions encountered exclusively within the maximum pay template.
. This, of course, does not alter in tiny way our previous finding that plaintiffs bid estimates of all materials components were unreasonable due to its several assumptions and its failure to make appropriate adjustments to its bid for the risks associated with those assumptions. See supra.
. Tr. at 1043-1101.
. Tr. at 1081.
. Plaintiff consistently challenges this court’s authority to decide for itself what a reasonable dredge contractor would or would not do by arguing that the proper test for reasonableness is the expert testimony of another dredge contractor. Plaintiff reasons that inasmuch as defendant did not call a "dredge contractor" or dredge expert, and plaintiff did, this court is somehow constrained to give conclusive effect to the plaintiffs expert’s testimony on the question of reasonableness. Nothing could be farther from the truth. Our inquiry into what is reasonable conduct on the part of any contractor is a question of law, to be decided using our own independent judgment. Naturally, we may accept testimony as to what an alleged expert would or would not have done — but such testimony is not unassailable by the forces of objective reason, logic, credibility, as well as other material evidence which may come in through the mouth of a non-dredge expert. In sum, as a question of law, we are charged to make our own independent assessment of the reasonableness of the plaintiffs conduct whether or not defendant presents even one scintilla of evidence with respect thereto. We note that Stem-berger v. United States, 401 F.2d 1012, 185 Ct.Cl. 528, 535-36 (1968), teaches that "[e]ven uncon-tradicted opinion testimony is not conclusive if it is intrinsically nonpersuasive.”
. Plaintiff was required, pursuant to General Provision 48, to undertake a thorough site investigation:
48. SITE INVESTIGATION (1965 JAN)
The Contractor acknowledges that he has investigated and satisfied himself as to the conditions affecting the work, including but not restricted to those bearing upon transportation, disposal, handling and storage of materials, availability of labor, water, electric power, roads and uncertainties of weather, river stages, tides or similar physical conditions at the site, the conformation and conditions of the ground, the character of equipment and facilities needed preliminary to and during prosecution of the work. The Contractor further acknowledges that he has satisfied himself as to the character, quality and quantity of surface and subsurface materials or obstacles to be encountered insofar as this information is reasonably ascertainable from an inspection of the site, including all exploratory work done by the Government, as well as from information presented by the drawings and specifications made a part of this contract. Any failure by the Contractor to acquaint himself with the available information will not relieve him from responsibility for estimating properly the difficulty or cost of successfully performing the work. The Government assumes no responsibility for any conclusions or interpretations made by the Contractor on the basis of the information made available by the Government. (ASPR 7-602.33)
PX 1 at General Provisions p. 13 (emphasis added).
. Tr. at 935-41.
. Tr. at 1103-05. We note that despite plaintiffs estimate of three to four inch gravel, it yet maintains that its expected gravel was based on the contract boring logs which Mr. Rice also testified indicated gravel only up to one and one half inches in size. While we note this inconsistency for the record, the boring logs speak for themselves as to what size gravel was indicated thereon.
. DPB at 13-14.
. See PX 22 — estimated total cubic yards to be dredged by Weeks: 8,255,555 (8,360,175 cy— 104,620 cy subcontracted out) divided by estimated total dredge hours for Weeks to complete its dredging: 9,607 (9,747 — 140 subcontracted out) = 859.33 cy per hour.
. See PX 34; 608 dredge days {i.e., 818 reported dredge days minus 174 days due to stump delay and 36 days due to flooding delay).
. See PX 22.
. Those three dredge report days were 4/29/81, 11/22/80, and 4/30/81. These figures are based on the court’s own independent review of the daily dredge reports.
. This figure was arrived at by averaging the daily rates for report dates: 9/21/81, 9/22/81, 9/23/81, 4/27/81, 4/29/81, 11/22/80, 5/12/81, 5/13/81, 5/16/81, 5/17/81, 5/18/81, 5/19/81, 5/20/81, 5/22/81, 5/26/81, 5/27/81, 5/28/81, 11/23/80, 8/3/81, and 4/30/81. The choice of 85% or greater gravel does not in any significant way detract from the comparison with plaintiff’s estimated production rates for dredging 100% gravel. In fact, according to plaintiffs own testimony, gravel is harder and more time consuming to dredge than sand or clay, both of which accounted for the major balance of materials encountered on the reports cited. Thus, where we have used production rate figures for 85% or greater gravel, and 15% to 0% of some other easier pumping material such as sand or clay, such productivity rate average would actually overstate the true 100% gravel production rate. In this case, if we have overstated the already weak actual production rate for gravel, it cannot be a source of prejudice to the plaintiff.
. PX 22
. PX 34 for report dates: 4/13/82, 10/12/80, 10/14/80, 10/16/80, 10/20/80, 9/26/80.
. PX 34 for report dates: 4/5/82, 4/13/82, 4/14/82, 4/15/82, 7/1/81, 7/6/81, 8/9/81, 8/10/81, 8/13/81, 8/14/81, 8/15/81, 8/16/81, 8/17/81, 8/18/81, 8/20/81, 8/21/81, 8/24/81, 10/6/80, 10/7/80, 10/8/80, 10/9/80, 10/10/80, 10/11/80, 10/12/80, 10/13/80, 10/14/80, 10/15/80, 10/16/80, 10/17/80, 10/18/80, 10/19/80, 10/20/80, 10/23/80, 10/24/80, 5/22/80, 5/29/80, 2/1/82, 2/2/82, 2/3/82, 2/4/82, 2/5/82, 2/6/82, 2/7/82, 2/8/82, 2/10/82, 2/11/82, 2/12/82, 2/13/82, 2/14/82, 2/15/82, 2/16/82, 2/17/82, 2/18/82, 2/19/82, 2/20/82, 3/16/82, 3/17/82, 3/18/82, 3/19/82, 3/20/82, 3/21/82, 3/22/82, 3/23/82, 3/24/82, 3/25/82, 4/2/81, 4/4/81, 4/5/81, 6/15/81, 6/16/81, 6/17/81, 6/18/81, 6/19/81, 6/20/81, 6/21/81, 6/22/81, 6/23/81, 6/24/81, 6/25/81, 6/26/81, 6/27/81, 6/28/81, 6/30/81, 1/26/80, 1/27/80, 1/28/80, 3/5/80, 3/6/80, 9/25/80, 9/26/80.
. PX 22.
. PX 34 for report dated 11/13/80.
. PX 34 for reports dated: 9/11/80, 9/13/80, 9/22/80, 9/23/80, 9/24/80, 1/19/80, 6/7/80, 11/13/80, 11/14/80, 11/15/80, 11/16/80, and 11/17/80.
. PX 22.
. PX 34 for reports 1/20/80, 4/27/80, 4/10/80, 4/28/80, 4/29/80, 10/29/80, and 10/30/80.
. PX 34 for reports 4/27/80, 1/20/80, 4/10/80, and 4/29/80, respectively.
. PX 34 for reports 1/20/80, 4/27/80, 4/10/80, 4/28/80, 4/29/80, 10/28/80, 10/29/80, and 10/30/80.
. We do not address the interest issue as to the other three differing site condition claims for the obvious reason that we have found no liability on behalf of the government for the underlying claim.
. See DX 7 and DX 20.