The plaintiff, a construction contractor, brought this action to recover additional compensation which it claims to be owed for its work in the development of a campsite at Wompatuck State Park in Hingham. From *249 a judgment, entered on a master’s report, dismissing the complaint, the plaintiff appeals.
The master’s findings are not in dispute; and our function on appeal, like that of the judge who ordered the entry of judgment, is to determine what disposition of the case is legally required by the master’s findings.
1
Central Tow Co.
v.
Boston,
The dispute arose because of a substantial underestimation by the Commonwealth’s designer, a private engineering firm, of the amount of excavation and replacement fill (“ordinary borrow”) that would be required to lay a proper base for the roads to be constructed within the campsite. No test borings or soil analyses were done for the purposes of accurate estimation; 2 the designer instead based his estimate on an assumption that, because roads had been constructed previously without difficulty in the same vicinity (the campsite had been used earlier as a naval ammunition depot), it would not be necessary to excavate beyond an average depth of twelve inches. In fact excavation revealed substantial amounts of unsuitable organic material and nested boulders, all of which had to be removed; and instead of excavating 85,650 cubic yards of material, the amount the designer had estimated, the plaintiff was required to excavate 215,492 cubic yards of material. The amount of ordinary borrow required to be brought in from other locations amounted to 278,493 cubic yards, rather than the 30,150 cubic yards which had been estimated by the designer.
The excavation and borrow items were bid on the basis of unit prices. The plaintiff had bid $1.60 per cubic yard for excavation and $ .90 per cubic yard for borrow. Multiply *250 ing these figures by the applicable estimates, the plaintiff had included as components of its total bid for the entire project ($2,113,597.20) $137,040.00 for excavation and $21,135.00 for borrow, a total of $158,175.00 for the two. In fact, because the work in those two categories so greatly exceeded that which had been estimated, the plaintiff has been paid a total, on the basis of unit prices, of $595,430.90 for the excavation and borrow items combined.
The master, however, found that that sum did not adequately compensate the plaintiff for the work it did in excavating and filling with borrow, and that fair compensation to the plaintiff for its work in those categories would have been $913,522.40. 3 The plaintiff advances two theories why it is entitled to the difference of $318,091.50.
The first is based on a finding that “[t]he earth moving operation was an entirely different type of job in scope and magnitude from the one that Federico offered to perform in its sealed proposal.” This finding, the plaintiff argues, brings the case within the authority of
Long
v.
Athol,
The second theory is that the Commonwealth impliedly warranted the accuracy, not to the precise yard but as fair approximations (compare
Muir Bros.
v.
Sawyer Constr. Co.,
There is a further reason that the plaintiff may not recover. It is a general rule in public construction contracts that, “if the contractor encounters materially different conditions from those predicted by the plans, specifications, preliminary borings and estimates, the contractor must follow the procedures spelled out in the contract ... to adjust the price before unilaterally accruing expenses to be pursued later on breach of contract or quantum meruit theories.”
Glynn
v.
Gloucester,
There was no error in the judgment dismissing the complaint.
Judgment affirmed.
Notes
We assume that the plaintiff’s motion to amend its complaint to conform to the findings made by the master would have been allowed if those findings had disclosed a basis for recovery. See
Castellucci
v.
United States Fid. & Guar. Co.,
There were some borings done in locations where comfort stations were to be built.
The difference arises because of the difficulties encountered in excavating to much greater depths; the necessity for using heavier equipment; the necessity for blasting of rock and use of mining methods; the greater distances that excavated material and borrow had to be transported; etc.
Article XVI(g) provided that “ [i]f the Contractor claims compensation for a change not ordered as aforesaid, or for any damages sustained, he shall on or before the first working day following commencement of any such work or sustaining of any such damage submit to the Architect, the Clerk of the Works and the Department a written statement of the nature of such work or damage sustained. Any work performed or damages sustained prior to the time specified above, even though similar in character, will not be considered as warranting compensation, it being clearly *253 understood that the commencement of any such work or the sustaining of any such damage will be recognized only when and as submitted in writing in accordance with the requirements of this Article” (emphasis supplied). The master found that no claim for extra compensation was submitted in accordance with the requirements of Article XVI (g).
