G.R. No. 90364 - Arriola vs. Commission on Audit

Case Summary (G.R. No. 90364)

Parties and Governing Audit Review

The background involves the defunct National Coal Authority (NCA), a subsidiary of the Philippine National Oil Co. (PNOC), which invited bids for the construction of a water well known as the Batangas Water Well project at the Batangas Coal Terminal of NCA in Sta. Rita, Batangas. The bidding became necessary because, after only one contractor submitted a bid, the NCA Contract Committee invalidated the original bidding and conducted re-bidding. The governing dispute centers on COA’s authority, under its auditing and disallowance powers, to determine whether government contract costs were excessive expenditures, and on whether COA followed due process in arriving at its findings and in holding signatory officials personally liable.

Factual Background of the Batangas Water Well Project

In October 1985, the NCA invited eight accredited and prequalified PNOC contractors to bid for the Batangas Water Well project. Because only one contractor submitted a bid, the NCA Contract Committee invalidated the bidding. On November 13, 1985, during the re-bidding, P.I. Well Drilling Corporation (P.I. Wells) was declared the winning bidder with a bid of P277,662.00. During negotiations, P.I. Wells reduced its bid to P262,662.00, representing a discount of P15,000.00. The contract was approved by the NCA Administrator and the NCA Executive Committee. On December 9, 1985, NCA Administrator M.V. Tiaoqui wrote P.I. Wells advising acceptance of the bid amount of P262,662.00. The contract was submitted to COA on January 28, 1986 for post-audit review, and the project was completed on February 14, 1986.

COA’s Audit Challenge and the Initial Disallowance

On April 9, 1986, the COA Technical Service Office requested a breakdown of the contract amount of P262,662.00 showing, with sufficient detail, the quantity and unit cost of direct labor and materials, and the derivation of total indirect costs, to facilitate review. NCA submitted detailed cost estimates in response. Subsequently, in a memorandum dated September 15, 1986, Jose F. Mabanta of COA Technical Service Office informed the NCA-assigned auditor that COA found the contract excessive by 46.94% due to higher unit costs used in NCA’s detailed agency estimates. COA stated the discrepancy amount was P83,914.22.

On September 15, 1986, the NCA-assigned auditor demanded refund of P83,914.22 and, on March 10, 1987, issued a Certificate of Settlement and Balances (CSB No. 87-0001-42) demanding settlement of P71,746.66, computed as P83,914.22 less 10% withholding taxes. The CSB demanded payment from NCA management officials identified as signatories to the check and payment voucher, including V.C. Arriola, J.L. Fernandez, and others.

NCA’s Requests for Rechecking and the COA Sustained Findings

On April 7, 1987, NCA requested COA Technical Service Office to recheck the first review, contending that some unit price differences might have arisen from differences in specifications and from changes in prices from bidding to COA’s review. COA Technical Service Office reiterated its original finding that the contract price was P83,914.22 or about 46.95% above COA cost.

On July 7, 1987, NCA sought reconsideration, emphasizing that what was submitted to COA was not the NCA estimate but the breakdown prepared by the contractor, and that the detailed contract breakdown submitted to COA was not the official version submitted by P.I. Wells to NCA. COA Technical Service Office sustained its findings and even increased the amount of disallowance to P95,885.30. NCA appealed to COA.

COA Decision No. 943 and Personal Liability Demand

On July 14, 1989, COA rendered Decision No. 943, dismissing NCA Deputy Administrator V.C. Arriola’s appeal while reducing the disallowed amount to P83,766.60. On August 9, 1989, the auditor-in-charge of NCA liquidation requested the Director and General Manager of the Board of Liquidators to furnish NCA officials concerned copies of the COA decision. Contrary to this request, petitioners Arriola and Fernandez received copies only on September 19, 1989, from Wenceslao M. Buenaventura, Director/General Manager of the Board of Liquidators. The Board demanded payment solely from petitioners of the disallowed amount.

Issues Raised by Petitioners

Petitioners challenged COA and the Board of Liquidators on three principal grounds. First, petitioners alleged a denial of due process because COA supposedly based its decision on certain documents, particularly canvass sheets or price quotations, but did not show those documents to them despite repeated demands. Second, they argued that COA’s disallowance of P83,766.60 was not supported by evidence and not in accord with law and applicable Supreme Court decisions. Third, they contended that COA erred in claiming payment from them in their personal capacity without any finding or even an allegation that they acted in bad faith, with malicious intent, or with negligence under the circumstances.

The Solicitor General initially disputed petitioners’ due process claim for being raised for the first time on appeal, but the Supreme Court chose to relax that procedural rule in the interest of justice because petitioners had been adjudged personally liable for the disallowed amount.

Petitioners’ Due Process Claim and COA’s Handling of Source Documents

Petitioners maintained that COA did not show them the canvass sheets on which the disallowance was premised, despite repeated requests. The Solicitor General, however, relied on a letter dated January 5, 1990 by the COA Technical Service Office Director stating that petitioners had not made a formal request to be shown the canvass sheets and had not questioned their validity. Petitioners countered through an affidavit by Atty. Bethany G. Kapili, who served as regulation office/in-house counsel for NCA at the time of contract award. She stated that meetings with COA Technical Service Office personnel were held, that petitioners asked to verify the canvass, that they were dismayed because they were not allowed to talk to the personnel who procured the canvass, and that they were repeatedly denied requests on the ground that the information was confidential.

Petitioners further argued that disclosure was belated. They noted that a COA Price Monitoring Division communication dated August 28, 1986 had stated that a market canvass was undertaken, but they allegedly learned only on January 5, 1990—after they had already filed the petition—that COA arrived at the price of P26,035.20 for the submersible pump pursuant to price quotations from suppliers. They claimed that this delayed disclosure deprived them of an opportunity to rebut COA’s price quotations, including the purported basis for arriving at an exact figure.

The Supreme Court’s Findings on Due Process Violations

The Supreme Court agreed that petitioners were indeed denied due process. The Court reasoned that COA did not sufficiently grant petitioners access to the source basis for its excessive cost determination. COA merely referred to a “cost comparison made by an engineer of COA Technical Service Office, based on unit costs furnished by the Price Monitoring Division,” without producing to petitioners the actual canvass sheets and/or the identified price quotations from accredited suppliers. The Court further held that, with respect to the submersible pump, COA should have produced a written price quotation specifically for the identified item and its required coupling and motor specifications, because the cost evaluation sheet dated September 15, 1986, item No. 12, referred only to a general description of a “Goulds submersible pump.”

Although a report dated August 28, 1986 contained a quoted price and a price finding for the pump, the Supreme Court ruled that such report, absent the actual canvass sheets and/or price quotations from identified suppliers, did not provide a valid basis for the outright disallowance of agency disbursements or cost estimates for a government project. The Court emphasized that a more humane procedure, aligned with due process, required that COA representatives allow the relevant contract committee members mandatory access to COA source documents or canvass sheets. The Court treated such transparency as consistent with COA’s own Audit Circular No. 85-55-A, particularly its approach for determining excessive expenditures by reference to, among others, the place and origin of goods, quantity, service warranties or quality, and special features of purchased units. The Court explained that access to source documents would allow the agency officials to verify compliance with COA guidelines and would prevent any suspicion that audit rules were used oppressively rather than as a working part

Case Syllabus (G.R. No. 90364)

Parties and Procedural Posture

Petitioners Virgilio C. Arriola and Julian L. Fernandez sought review by certiorari of Decision No. 943 of the Commission on Audit (COA) dated July 14, 1985.
The COA disallowed P83,914.22 out of P262,662.00 as the total cost of the Batangas Water Well Project and held petitioners personally liable for the disallowed amount.
Respondents were the Commission on Audit and the Board of Liquidators, which enforced COA’s disallowance through its liquidation processes.
The petition raised issues on due process, evidentiary support, and the legal basis for personal liability absent findings of bad faith, malicious intent, or negligence.
The Court relaxed procedural rules to allow petitioners to raise due process considerations for the first time on appeal, given the personal nature of the COA liability.

Key Factual Allegations

In October 1985, the defunct National Coal Authority (NCA), a subsidiary of PNOC, invited eight accredited and prequalified PNOC contractors to bid for the construction of a water well at the NCA Batangas Coal Terminal in Sta. Rita, Batangas.
Only one contractor submitted a bid, prompting the NCA Contract Committee to invalidate the bidding.
On November 13, 1985, during re-bidding, P.I. Well Drilling Corporation (P.I. Wells) won with a bid of P277,662.00.
After negotiation, P.I. Wells reduced the bid to P262,662.00, representing a discount of P15,000.00.
The contract was approved by the NCA Administrator and the NCA Executive Committee, and on December 9, 1985, the NCA accepted the reduced bid amount.
On January 28, 1986, the contract was submitted to COA for post-audit review.
The project was completed on February 14, 1986.
On April 9, 1986, COA-TSO requested a detailed breakdown of the P262,662.00 contract amount to facilitate review of direct labor and materials costs and the derivation of indirect costs.
NCA submitted detailed cost estimates in response to COA-TSO’s directive.
In a memorandum dated September 15, 1986, COA-TSO informed NCA that the contract amount was excessive by 46.94%, with the discrepancy pegged at P83,914.22, attributed to higher unit costs used in NCA’s detailed agency estimates.
On September 15, 1986, the NCA-assigned auditor demanded refund of P83,914.22.
On March 10, 1987, the auditor issued Certificate of Settlement and Balances (CSB No. 87-0001-42) for settlement of P71,746.66 (computed as P83,914.22 less 10% withholding taxes amounting to P3,776.44) from specified NCA management officials, including Arriola and Fernandez, as signatories to relevant payment instruments.
In April 7, 1987, NCA sought reconsideration and requested rechecking, contending that unit price differences could have resulted from specification differences and market price changes between bidding and COA findings.
COA-TSO reiterated its excessive-expenditure finding and later increased the disallowance to P95,885.30 compared with the earlier P83,914.22.
On July 14, 1989, COA rendered Decision No. 943, dismissing NCA Deputy Administrator V.C. Arriola’s appeal but reducing the disallowed amount to P83,766.60.
COA-Board of Liquidators processes led to petitioners’ receipt of Decision No. 943 on September 19, 1989, after which the Board demanded the disallowed amount solely from petitioners.
Petitioners challenged the Board’s act of enforcing COA’s disallowance against them personally through the instant petition.

Issues Raised

Whether petitioners were denied due process when COA allegedly did not show them the source documents, including canvass sheets and price quotations, used as the basis for COA’s decision despite repeated requests.
Whether COA’s finding that P83,766.60 should be disallowed was supported by evidence.
Whether COA could lawfully claim the disallowed amount from petitioners in their personal capacity without any finding or allegation that they acted with bad faith, malicious intent, or negligence.

Contentions of the Parties

Petitioners argued that COA violated due process because certain documents, particularly the canvass sheets and the underlying price quotations from suppliers, were not furnished to them despite repeated demands.
Petitioners contended that COA’s disallowance was premised on matters that could not be tested through the source documents, leaving their ability to rebut COA’s calculations effectively impaired.
Petitioners claimed that disclosure of specific pricing details occurred only after the petition was filed, and that delayed disclosure deprived them of a meaningful chance to challenge COA’s computations.
Petitioners further argued that COA failed to meet the evidentiary burden required for disallowance and did not establish that COA’s “excessive” determination complied with applicable standards.
Respondents, through the Solicitor General, disputed petitioners’ due process claim and pointed to COA-TSO’s assertion that petitioners never made formal requests to be shown the canvass sheets and never questioned