delivered the opinion of the court:
These two appeals, consolidated for opinion, involve plaintiff’s attempts to gain site location approval for a new sanitary landfill in McHenry County pursuant to the provisions of the Environmental Protection Act (hereinafter designated the Act) (111. Rev. Stat. 1983, ch. HV-k, par. 1039.2). We begin by reviewing the somewhat complicated case history.
Plaintiff, McHenry County Landfill, Inc. (hereinafter designated Landfill), filed its initial request for site approval with McHenry County on November 27, 1984. In January and February 1985, the McHenry County board held hearings to determine the suitability of the site under the six criteria set out in the Act (111. Rev. Stat. 1983, ch. lll1^, par. 1039.2). The board denied the request, finding that plaintiff had established only three of the six criteria. Landfill then petitioned the Pollution Control Board (hereinafter designated the PCB) to review that decision as provided by section 40.1 of the Act (111. Rev. Stat. 1983, ch. llLVa, par. 1040.1). Cross-appeals were filed by Arthur T. McIntosh & Company, the Landfill Emergency Action Committee, the villages of Lakewood and Huntley and several others who participated in the county hearing (hereinafter referred to as the objectors) to challenge the board’s conclusion that three of the criteria had been met. The PCB determined that the county board improperly required Landfill to establish by the manifest weight of the evidence that its site met the statutory criteria, rather than using the appropriate preponderance of the evidence standard. The PCB concluded that, because the decision was not rendered under the correct standard, it had “no proper subject for review before it.” It remanded to the county board, directing that it apply the correct standard but noting that it need not hold a new hearing. On October 15, 1985, the county board took a new vote and reaffirmed its first order, concluding that it had in fact applied the preponderance of the evidence standard in reaching that original decision.
Following the county board’s second decision, Landfill submitted a statement to the Environmental Protection Agency (hereinafter the EPA) requesting that it issue Landfill a permit to develop the site, claiming that it had been approved by operation of law because the PCB had not followed the mandatory procedures set out in the Act (111. Rev. Stat. 1985, ch. llF/z, par. 1040.1) and because the county board had not taken “final action” within 120 days of the initial filing (111. Rev. Stat. 1983, ch. IIIV2, par. 1039.2). However, Landfill also appealed the county board’s second decision to the PCB. The EPA informed Landfill that it would not issue a permit absent an order from the PCB or a court of law.
On January 13, 1986, Landfill filed a declaratory action in the circuit court of McHenry County requesting that it stay the PCB proceedings and issue a declaratory judgment finding site approval by operation of law. The suit named the EPA, the PCB, and McHenry County as defendants. The trial court dismissed Landfill’s action for failure to exhaust administrative remedies and lack of subject matter jurisdiction. The first of the two actions this opinion addresses, case No. 86 — 265, is Landfill’s appeal of that dismissal.
Following the trial court’s dismissal, Landfill filed a motion with the PCB requesting that it declare that the site had been approved by operation of law for the same reasons raised in the trial court. On March 14, 1986, the PCB denied Landfill’s motion and affirmed the county board’s denial of site approval, but found that a fourth criterion had been met. Landfill appealed the PCB decision directly to this court as permitted by section 41 of the Act (111. Rev. Stat. 1985, ch. lll1^, par. 1041). That appeal names the PCB, McHenry County, and the objectors as defendants. The appeal, along with the objectors’ cross-appeals, is case number 86 — 369, the second of the two appeals currently before this court.
I
The first issue we must address is whether this court should review the dismissal of a declaratory action (case No. 86 — 265) when a second appeal which directly addresses the substantive issues involved in the declaratory action is currently pending. One of the objectors, Arthur T. McIntosh & Company (in a motion to dismiss which we have taken with this case), and the appellees argue that case No. 86-265 should be dismissed as moot. We agree.
An appellate court will not render an opinion on a moot question or an abstract proposition or enter a declaratory judgment which will not affect the rights of the parties before it. (Johnson v. Quern (1980),
We conclude that no useful purpose could be served by reviewing the trial court’s dismissal of Landfill’s declaratory action. Clearly, a reversal would not empower the trial court to enjoin a PCB hearing or decision which has already occurred. (See Rasky v. Anderson (1978),
II
Landfill raises the following arguments on appeal: (1) because the county board and the PCB failed to follow the Act’s mandatory procedures, Landfill was entitled to deem its site approved; (2) the county board’s hearing was fundamentally unfair because certain evidence offered by Landfill was excluded; and (3) the PCB’s decision was against the manifest weight of the evidence. In addition, Landfill filed a motion to dismiss the objectors’ cross-appeals (which motion we have taken with the case), claiming that they have no standing to appeal.
We will first consider Landfill’s motion to dismiss the cross-appeals. Due process of law does not encompass the right to appeal an administrative decision, and affording that right is the exclusive prerogative of the legislature. (Board of Education v. Gates (1974),
The PCB permitted the objectors to file cross-appeals of the county board’s decision, concluding that failure to do so would frustrate its policy of reviewing all local decisions. Section 40.1 of the Act, which governs appeals to the PCB, provides:
“If the county board *** refuses to grant [site] approval *** the applicant may *** petition for a hearing before the [PCB] to contest the decision ***.
(b) If the county board *** grants [site] approval *** a third party other than the applicant *** may petition the [PCB] *** for a hearing to contest the approval ***.” (111. Rev. Stat. 1985, ch. llV-k, pars. 1040.1(a), (b).)
The Act thus does not provide for a third-party appeal where the PCB has refused to grant site approval. (See E & E Hauling, Inc. v. Pollution Control Board (1985),
We now address the substantive arguments raised by Landfill.
A
Landfill argues that the PCB’s failure to follow statutory requirements entitled Landfill to deem its site approved. After the county board first refused to approve the site, Landfill appealed to the PCB on April 23, 1985. On July 5, 1985, the PCB published notice of the hearing which was held on July 25, 1985. Landfill argues that, in giving only 20-day notice of the hearing, rather than the 21 days the Act requires, the PCB violated a mandatory and jurisdictional provision of the Act and therefore failed to conduct a valid hearing within the required 120 days. (See 111. Rev. Stat. 1985, ch. IIIV2, par. 1040.1.) As a result, Landfill was entitled to deem its site approved.
Because we reject Landfill’s argument, we find it unnecessary to consider the PCB’s contentions that: (1) Landfill has no standing to raise the jurisdictional issue; (2) Landfill waived the objection by failing to raise it at the hearing; and (3) the subsequent hearing cured the notice deficiency.
Section 40.1 of the Act provides in pertinent part:
“If the county board *** refuses to grant [site] approval *** the applicant may *** petition for a hearing before the [PCB] to contest the decision ***. The [PCB] shall publish 21 day notice of the hearing on the appeal ***. *** If there is no final action by the [PCB] within 120 days, petitioner may deem the site location approved ***.” 111. Rev. Stat. 1985, ch. llLVa, par. 1040.1.
Landfill relies on two recent decisions as authority for its argument that the 21-day notice requirement is mandatory and jurisdictional. In Illinois Power Co. v. Pollution Control Board (1985),
In Kane County Defenders, Inc. v. Pollution Control Board (1985),
In interpreting statutory language, the court should attempt to give effect to the legislature’s intent. (In re Application of Rosewell (1983),
The decisions in Kane County Defenders and Illinois Power were consistent with the legislature's purposes. In Kane County, the notice requirement was held to be jurisdictional because failure to give it would have jeopardized both the quality of the initial hearing and the public’s sole opportunity to comment on the proposed landfill location. (Kane County Defenders, Inc. v. Pollution Control Board (1985),
In Illinois Power, the court recognized that, in addition to its public health concerns, the Act requires the PCB to expedite its review process. If the court had not deemed the permits issued under the circumstances presented there, it would effectively have allowed the PCB to avoid the consequences of an impending violation of the 90-day limit by disregarding the notice requirement. (Illinois Power Co. v. Pollution Control Board (1985),
B
Landfill next argues that it was entitled to deem its site approved because the county board failed to take “final action” on its request within 120 days of filing, as required by section 39.2(e) of the Act (111. Rev. Stat. 1983, ch. lllVa, par. 1039.2(e)). Landfill admits that the county board denied site approval 114 days after the initial filing (on March 20, 1985), but contends that the order was not “final” because, on review, the PCB held that the wrong evidentiary standard had been used and that it therefore had “no proper subject for review before it.” By the time the PCB remanded the case to the county board for a new vote, the initial 120-day period had expired, and Landfill argues that the county board’s subsequent decision therefore was untimely.
Again, we must look to the legislature’s intent (Maloney v. Bower (1986),
The fact that the PCB concluded that the county board had applied an improper standard did not cause a retroactive expiration of the 120-day limit because an erroneous administrative order is not void on its face and from its inception as if subject matter jurisdiction had been lacking, but is merely voidable in an appropriate review proceeding. (See Newkirk v. Bigard (1985),
C
Landfill next argues that the county board hearing was fundamentally unfair because the hearing officer excluded some of its evidence. (See 111. Rev. Stat. 1985, ch. lll1^, par. 1040.1 (requiring the PCB to consider the fundamental fairness of the county board’s procedures).) The county board’s hearing officer excluded those portions of the testimony of Landfill’s expert hydrogeologist which related to his recommendations for improving the proposed Landfill design, concluding that the testimony would unfairly surprise opponents of the Landfill. The recommendations were later elicited to Landfill’s satisfaction by several board members who questioned the expert. It is unclear whether the county board initially considered the recommendations, however, because the hearing officer instructed the board not to consider Landfill’s proposed changes to its application, but stated that he was not ruling on the propriety of the board’s requiring such changes. The PCB reviewed that first county board decision and remanded for other reasons, concluding that while exclusion of the evidence had not affected the fundamental fairness of the hearing, it was ill-advised.
On remand, the county board apparently did consider the excluded evidence which was contained in the record, stating that its final conclusions that three of the required criteria had not been met would not be altered by it. We therefore find it unnecessary to decide whether the initial exclusion of the testimony was error, because the testimony was in fact presented to and considered by the county board before it made its second decision, which is on appeal here. We therefore must conclude that any error the county board may have made was harmless. See Waste Management of Illinois, Inc. v. Pollution Control Board (1984),
D
Landfill’s final contention is that the decisions of the county board and the PCB were against the manifest weight of the evidence. The PCB determined that Landfill had met its burden in establishing four of the six statutory criteria, but affirmed the county board’s refusal to approve the site, because it had failed to meet its burden on the remaining two. We therefore need only consider the evidence presented with respect to those criteria. They are:
“(ii) the facility is so designed, located and proposed to be operated that the public health, safety and welfare will be protected;
* * *
(vi) the traffic patterns to or from the facility are so designed as to minimize the impact on existing traffic flows.” HI. Rev. Stat. 1983, ch. HV-k, pars. 1039.2(aXii), (aXvi).
A reviewing court will not reverse an administrative agency’s decision unless it is against the manifest weight of the evidence. (Davern v. Civil Service Com. (1970),
At the hearing, three experts testified for Landfill regarding the health and safety ramifications of the proposed landfill — the design engineer, an expert hydrogeologist, and a geotechnical engineer. They concluded that the landfill would have no adverse effect on the safety of the surrounding communities. Experts for the objectors, however, testified that laboratory soil permeability tests used by Landfill’s experts provided insufficient data to conclude that the soil was sufficiently impermeable to prevent leakage and pollution of the surrounding soil. One expert, a soil water engineer, concluded that there was a continuous layer of potentially water-bearing soil running across the proposed site. He stated that deeper monitoring wells, and extensive quality control in the excavation process, neither of which were provided for in the proposed design, were necessary to ensure safety. Another witness, a professor with expertise in geology and hydrogeology, testified to the necessity of field tests and deeper boring samples. He stated that the data accumulated by Landfill’s experts were insufficient to assure that the soil at the proposed site would not subside. A third expert, a professor of civil engineering, concluded that the rate at which water collected in the boring holes indicated that the soil was more permeable by several orders of magnitude than the laboratory test results for those boring samples indicated. In addition, Landfill’s own expert hydrogeologist stated that leachate, a potential pollutant, would probably continue to form and collect at the site long after the facility has closed and the three year post-closure monitoring period has ended, i.e., long after Landfill stops removing it.
Landfill argues that laboratory tests for soil permeability are accepted by the EPA, as is the number of boring samples it used, and that those tests indicate that the soil’s impermeability exceeds the EPA standards. Additionally, PCB regulations require only three years of post-closure care, the depth of the Landfill’s proposed clay liner is well in excess of EPA requirements, and the design and proposed operation meet or exceed all State requirements for landfills. Landfill contends that, where a proposed landfill meets or exceeds State design and operation requirements, a county board may not reject the site by imposing other, higher standards of design and operation which the applicant has failed to meet. We disagree.
Landfill relies on isolated statements made by this court in two recent decisions to support its position. In M.I.G. Investments, Inc. v. Environmental Protection Agency (1986),
Landfill additionally cites County of Lake v. Pollution Control Board (1983),
The final issue is whether Landfill met the traffic pattern criterion. The only expert to testify on this issue was Brian Johnson, a professional traffic engineer. The site is located on Route 47, a two-lane, major arterial route, which will be used by trucks entering and leaving the site. The speed limit on Route 47 is 55 miles per hour, and there will be no traffic signals at the site entrance. Mr. Johnson testified that an estimated 80 to 85 trucks would use the site per day and that 85% to 90% of them would approach the site from the north and would have to make a left turn from Route 47 into the site. For that reason, he proposed developing a protected left turn lane for the vehicles. However, his plans did not include a deceleration lane for traffic approaching from the south and making a right turn into the site, because he concluded that even during peak traffic periods, only two trucks will make that turn over a one-hour period.
We believe that the county board could properly have concluded that even one or two trucks slowing enough to make a right-hand turn on a two-lane, 55-miles-per-hour roadway presented a substantial hazard to existing traffic. For that reason, we conclude that the PCB and the county board’s findings that Landfill had not met its burden in meeting the traffic pattern criterion were not against the manifest weight of the evidence.
For the foregoing reasons, we affirm the PCB’s decision.
Affirmed.
HOPF and DUNN, JJ., concur.
