I FACTS
In August 1982, the petitioner E.F.S. Ventures Corp. (hereinafter EFS) purchased a 5.2-acre parcel on the north side of Old Montauk Highway, which had been improved by a dwelling, small motel and cottages, known as the Beachcomber. Thereafter, EFS applied for approval of a site plan for the renovation of the existing 12-unit motel building, the relocation and conversion of the existing dwelling into two units (hereinafter Hill House), construction of a 20-unit motel building (hereinafter Ocean West), construction of a 30-unit motel building (hereinafter Ocean East), construction of an office, the removal of a metal storage building and the retention of six cottages, housing 11 motel units. The entire Beachcomber development would contain 75 motel units. By resolution, dated September 29, 1982, the Planning Board of the Town of East Hampton (hereinafter the planning board) approved the site plan, subject to compliance by EFS with specified conditions recommended by the planning board’s planning and design consultant. Some of the conditions imposed by the planning board were designed to mitigate the environmental impact of the project upon a small pond located at the northeast corner of the parcel, reported to be the breeding ground for an endangered species—the blue-spotted salamander. For example, the board required the relocated Hill House to be set back a minimum of 75 feet from the pond’s edge, the septic and leaching fields to be set back a minimum of 100 feet, and the granting of a 50-foot scenic easement surrounding the pond to the Town of East Hampton. The planning board also required that a berm be reconstructed to contain drainage from the parking lot. In recommending approval of the site plan, the planning board’s retained consultant noted that the location of the motel structures, parking lots and driveway seemed to conform better with the existing topography than the originally approved site plan submitted by the previous owners. In November, building permits were issued and construction commenced in accordance with the planning board’s conditions. Minor amendments to the site plan were thereafter approved by resolution of the planning board on December 1, 1982.
*42On January 26, 1983, EFS submitted to the planning board for approval a modified site plan, which provided for the removal of all the cottages and the construction of a 28-unit structure (hereinafter Oceanside), a swimming pool and tennis court. The modified site plan provided for a net increase of 17 motel units. Some of the cottages to be demolished were nonconforming, due to their proximity to Old Montauk Highway. The planning consultant retained by the planning board reviewed this proposal and advised the planning board, inter alia, that the project was an "unlisted action”, pursuant to the State Environmental Quality Review Act (SEQRA; ECL art 8) and that the project would not result in an adverse impact on the environment. By letter dated February 18, 1983, the planning board informed EFS that it had made a determination of nonsignificance. Subsequently, EFS prepared part one of the environmental assessment form (hereinafter EAF), and the planning board’s planning consultant prepared part two. On March 16, 1983, the planning board prepared part three of the EAF and concluded that, after a review of parts one and two, the modified site plan would result in "a potential overall small to moderate impact on the environment”, which could be mitigated by the measures outlined in part two of the EAF. On March 17, 1983, the planning board filed with the Town Clerk a formal "negative declaration” under SEQRA and issued a resolution, approving the modified site plan, subject to specified conditions. On March 31, 1983, building permits were issued, and construction commenced.
On or about April 14, 1983, local residents commenced a proceeding pursuant to CPLR article 78 to set aside the planning board’s March 17, 1983 resolution approving the modified site plan on the ground, inter alia, that the planning board had not literally complied with the statutory mandates of SEQRA when it made its initial finding of environmental nonsignificance prior to the preparation of the environmental assessment forms. On April 15, 1983, an order temporarily restraining further construction pending the hearing of a motion for a preliminary injunction was granted. EFS halted construction in compliance with the temporary restraining order. As of that date, 90% of the development to be constructed pursuant to the planning board’s approval of EFS’s original site plan was complete at a cost of $1,313,000. In accordance with the modified site plan, EFS had demolished the six cottages, had excavated the site for the 28-unit Oceanside structure, laid the footings and foundation for this build*43ing and had framed a portion of the first story, at a cost in excess of $136,000.
By order, dated April 20, 1983, the temporary restraining order was vacated and the local residents’ motion for an order preliminarily enjoining construction during the pendency of their proceeding pursuant to CPLR article 78 was denied due to the unlikelihood of success on the merits. EFS recommenced construction in accordance with the planning board’s prior resolutions. It is noteworthy that the local residents did not seek leave to appeal from the denial of their motion for a preliminary injunction nor did they apply to this court pursuant to CPLR 5518 for an order restraining construction pending an appeal from the order dated April 20, 1983. Consequently, by the time Special Term rendered its disposition of the local residents’ proceeding, the portion of the development constructed pursuant to the modified site plan was complete at a cost of $700,000. Needless to say, the remaining 10% of the construction on the project built pursuant to the original site plan was also complete.
By order, dated October 12, 1983, Special Term granted the local residents’ petition to the extent of setting aside the planning board’s March 17, 1983 resolution, which approved the modified site plan, and remitting the matter for a de novo determination, after full compliance with the statutory mandates of SEQRA. Special Term also enjoined the issuance of certificates of occupancy for the 64 units constructed or renovated pursuant to the planning board’s September 1982 resolution approving EFS’s original site plan. EFS appealed this order.
By order dated April 15, 1985, this court, in disposing of EFS’s appeal, affirmed so much of Special Term’s order of October 12, 1983, as granted the local residents’ petition to the extent of setting aside the planning board’s resolution filed March 17, 1983, which approved the modified site plan, and remitting the matter to the planning board for reconsideration, after literal compliance with the mandates of SEQRA. However, this court expressly noted that "the four-month Statute of Limitations precludes the granting of relief concerning construction commenced and/or completed pursuant to the [Board’s] September 1982 and prior resolutions [the resolutions that approved the original site plan] (see, CPLR 217)” (Matter of Nielsen v Planning Bd., 110 AD2d 767, 769; emphasis added). Consequently, this court vacated the injunction prohibiting the issuance of certificates of occupancy for the 64 *44motel units located in Ocean East, Ocean West, and Hill House (Matter of Nielsen v Planning Bd., supra).
While EFS’s appeal from Special Term’s October 12, 1983 order was pending, the planning board, in compliance with Special Term’s order, reconsidered, de novo, the modified site plan. After environmental assessment forms were prepared, the planning board issued a positive declaration under SEQRA. Subsequently, draft and final environmental impact statements were prepared. The requisite public hearing and comment periods were also conducted, in literal compliance with the procedural requirements of SEQRA.
The planning board identified eight major and two minor safety and environmental concerns. One major adverse impact identified by the planning board pertained to the limited sight distance available at the access driveway for the Beachcomber development. The access driveway is located on Old Montauk Highway, which runs along the entire southern border of the premises. A crest in the highway in the vicinity of the parcel’s eastern property line limits the sight distance of vehicles approaching the access driveway on the highway from the east to approximately 250 feet. According to the National Cooperative Highway Research Program, the recommended minimum sight distance for a road with a posted 30-mile-per-hour speed limit, such as Old Montauk Highway, is 430 feet. Another major adverse impact pertained to an interior roadway traffic circulation problem for emergency vehicles, i.e., an inadequate radius for the turnaround of fire apparatus servicing Ocean East, Hill House and Ocean West, which are connected by a roadway, with adjacent parking facilities, that terminates in a dead end at the western corner of Ocean West.
By resolution, dated September 5, 1984, the planning board approved the modified site plan subject to EFS’s compliance with several measures to mitigate all the significant environmental concerns identified by the planning board in the final environmental impact statement. The most financially costly mitigation measure imposed by the planning board required the removal of 10 motel units and the relocation of the access driveway. The planning board directed the removal of Hill House (housing two motel units) to provide an area for emergency vehicles and fire apparatus to turn around and to provide an additional buffer area for the pond. Four units on the eastern corner of Ocean East were to be removed in order to reroute the interior roadway to provide a safer curve radius *45for fire apparatus and to provide a buffer area between the development and adjoining property to the east of the premises. Additionally, EFS was to close the current access driveway and to remove the four units on the west corner of the Oceanside structure in order to relocate the access driveway west of its current location, which would furnish a sight-stop distance of over 400 feet. EFS proposed alternate measures to effectively mitigate the access driveway sight distance concern and the emergency vehicle circulation concern, which included the regrading of 100 feet of Old Montauk Highway at EFS’s expense to provide safe access visibility and the opening of a portion of School Lane, a mapped road located on the western border of the premises, to provide an area for emergency vehicles to turn around. The Town Engineer stated that the regrading of Old Montauk Highway to improve sight distance at the current access driveway location was the most desirable alternative from an engineering standpoint and that proposal had the authorization of the Highway Superintendent of the Town of East Hampton. The Chairman of the Board of Fire Commissioners of the Montauk Fire District stated that upon reviewing EFS’s modified site plan, the Board of Fire Commissioners was of the opinion that the current interior roadway provided an adequate curve radius and turnaround area for fire engines. Rather than removing Hill House, the Board of Fire Commissioners found acceptable EFS’s proposal to open a portion of School Lane for the purpose of making a cul-de-sac for fire apparatus to turn around. A member of the Montauk Fire Department, familiar with the site, and the Chief of the Fire Department concurred with this opinion. Even the Chief Fire Inspector of the Town of East Hampton’s Department of Fire Prevention, who characterized the interior emergency vehicle circulation flow to the rear of Ocean East, Hill House and Ocean West as a "firefighter’s nightmare”, acknowledged that opening a section of School Lane would be an acceptable mitigation measure. The alternative mitigation measures proposed by EFS were rejected by the planning board, which concluded that the wildlife corridor within School Lane should not be disturbed and that on-site, rather than off-site, mitigation measures were preferable.
Thereafter, EFS commenced the instant CPLR article 78 proceeding to set aside the planning board’s resolution of September 5, 1984, approving the modified site plan, conditioned, inter alia, upon the destruction of 10 motel units. In a *46memorandum decision, dated January 23, 1985, Special Term (Stark, J.), concluded that the planning board, in reviewing the modified site plan for the 28-unit Oceanside building, properly considered the environmental impact of the entire development, rather than confining their review to the proposed enlargement, and that the planning board had arrived at an acceptable balance between conflicting interests. Additionally, Special Term held that EFS had acquired no vested rights, upon finding that it had completed the project at its peril by "proceeding full tilt” with construction during the prior proceeding pursuant to CPLR article 78, which resulted in a judgment annulling the planning board’s March 17, 1983 resolution approving the modified site plan. In the judgment appealed from, entered March 20, 1985, Special Term dismissed the proceeding.
On May 15, 1985, EFS commenced a second proceeding pursuant to CPLR article 78 to compel the building inspector to issue permanent certificates of occupancy for the 64 units located in Ocean East, Ocean West and Hill House, erected pursuant to the original site plan. The building inspector would only issue temporary certificates of occupancy for 58 of the 64 units, because the remaining six units were among the 10 units required to be destroyed, pursuant to the planning board’s September 5, 1984 resolution. Furthermore, the building inspector advised EFS that no permanent certificates would issue until EFS had complied with all the conditions imposed by the resolution dated September 5, 1984. By judgment, dated July 29, 1985, Special Term (Stark, J.), dismissed the proceeding upon finding no legal basis for granting mandamus compelling the building inspector to issue 64 permanent certificates of occupancy.
II THE DOCTRINE OF EQUITABLE ESTOPPEL
I disagree with my learned colleagues regarding the issue of whether or not the doctrine of equitable estoppel may be invoked under the extraordinary circumstances at bar to preclude the planning board from imposing as a condition to approval of the modified site plan the removal of 10 motel units.
It is well settled that a governmental agency may be es-topped where its wrongful or negligent conduct induces a party relying thereon to change his position to his detriment (Bender v New York City Health & Hosps. Corp., 38 NY2d 662, *47668; Landmark Colony v Board of Supervisors, 113 AD2d 741, 744). Although estoppel should be invoked "only in truly exceptional cases, involving, as it often does, an intrusion, pro tanto, by the judiciary, into the prerogatives of other branches of the government” (Eden v Board of Trustees of State Univ., 49 AD2d 277, 284; Luka v New York City Tr. Auth., 100 AD2d 323, 325, affd 63 NY2d 667; Landmark Colony v Board of Supervisors, supra), courts have not hesitated to invoke estoppel if a manifest injustice would otherwise occur (see, ScruggsLeftwich v Rivercross Tenants’ Corp., 119 AD2d 88; Bender v New York City Health & Hosps. Corp., supra, at 668; Landmark Colony v Board of Supervisors, supra; Matter of 1555 Boston Rd. Corp. v Finance Adm’r of City of N. Y., 61 AD2d 187, 192; Eden v Board of Trustees of State Univ., supra, at 284).
Furthermore, there is authority for invoking equitable doctrines to prevent manifest injustice in suits brought to compel compliance with Federal and sister States’ environmental protection statutes that are analogous to SEQRA. For example, in People v Department of Hous. & Community Dev. (45 Cal App 3d 185, 119 Cal Rptr 266), a State agency had issued a permit for the construction of a mobile home park without preparing an environmental impact statement, in violation of the California Environmental Quality Act (hereinafter CEQA) (see, Cal Public Resources Code § 21000 et seq.). The applicant had waited four months to ascertain whether the State would require environmental inquiries under CEQA, and, after receiving official assurances that these inquiries were unnecessary, he forwarded his application to the State and received the construction permit. Upon receiving the permit, the applicant removed and destroyed improvements worth about $20,000 and spent about $20,000 for construction, administrative outlays and lease payments. Thereafter, the State’s representative filed suit to rescind the permit for noncompliance with CEQA. While recognizing that in environmental suits equitable defenses will rarely be invoked to defeat a policy adopted for the public protection, the California Court of Appeals held that the State was barred by laches, a doctrine which rests on the same principle as estoppel, from annulling the developer’s permit where nullification would cause injustice of sufficient dimension to warrant judicial refusal to enforce environmental procedures which should have preceded his project. The court concluded that $40,000 represented an undebatable quantum of prejudice and rejected the State’s argument that *48the bar of laches would allow developers to rush into actual construction immediately after approval of construction permits and thereby defeat anticipated lawsuits to enforce statutory procedures to protect the environment. The court noted that this argument overlooks judicial refusal to tolerate such tactics and, absent evidence of bad faith, the developer had every right to rely upon the official permit sanctioning his proposal. Since the record showed no acceleration of the developer’s activities for the purpose of "beating out” the opposition, the court sustained the developer’s defense of laches.
Similarly, in cases involving violations of the National Environmental Policy Act (hereinafter NEPA) (see, 42 USC § 4321 et seq.), the statute upon which SEQRA was modeled (Aldrich v Pattison, 107 AD2d 258; H.O.M.E.S. v New York State Urban Dev. Corp., 69 AD2d 222, 232), Federal courts have also invoked the doctrine of laches and have refused to preliminarily enjoin construction where the petitioner’s delay in bringing a proceeding to compel compliance with NEPA had resulted in construction proceeding to a "point where any significant environmental damage [had] already been done” or, in the alternative, where "construction may have gone so far that for economic reasons it would be impracticable or impossible to alter much of the basic plan” (Steubing v Brine-gar, 511 F2d 489, 495; see, e.g, City of Rochester v United States Postal Serv., 541 F2d 967; Dalsis v Hills, 424 F Supp 784; Riverdale Envtl. Action Comm. Along Hudson v Metropolitan Transp. Auth., 638 F Supp 99, 102-103, affd 797 F2d 110). This court has also taken cognizance of the fact that when environmental impact statements are not prepared at an early stage, modification of a project in light of subsequently discovered environmental problems may no longer be feasible "because nonenvironmental considerations may have already been transformed into an over-all proposal” (Matter of Sun Beach Real Estate Dev. Corp. v Anderson, 98 AD2d 367, 371, affd 62 NY2d 965; Golden v Metropolitan Transp. Auth., 126 AD2d 128).
(A) APPLICATION OF EQUITABLE ESTOPPEL TO BAR DESTRUCTION OF SIX UNITS CONSTRUCTED IN ACCORDANCE WITH THE PLANNING BOARD’S RESOLUTION OF SEPTEMBER 29, 1982
In the instant case, 6 of the 10 units (two units in Hill *49House and four units in Ocean West), directed by the planning board to be demolished to mitigate the traffic circulation concern for emergency vehicles using the interior roadway for Ocean East. Hill House and Ocean West, were renovated and/ or constructed pursuant to the planning board’s September 29, 1982 resolution, approving EFS’s original site plan application. Furthermore, the dead end, interior subject roadway and adjacent parking facilities were also approved pursuant to this resolution. Contrary to the majority’s representation, neither Special Term nor this court annulled the planning board’s September 29, 1982 resolution, as the local residents had never timely commenced a proceeding to set aside this resolution predicated upon the failure of the planning board, as lead agency, to literally comply with the procedural requirements of SEQRA (see, Matter of Nielsen v Planning Bd., 110 AD2d 767, supra). Moreover, such relief would clearly have been barred by the defense of laches, since 90% of the project constructed pursuant to the approved original site plan had been completed at a cost of approximately $1,313,000 as of the date the local residents commenced their proceeding to review the planning board’s resolution, filed March 17, 1983. Similar to the applicant in People v Department of Hous. & Community Dev. (45 Cal App 3d 185, 119 Cal Rptr 266, supra), EFS acted in good faith in relying upon the September 1982 resolution of the planning board approving their original site plan, as no timely challenge had been made and EFS fully complied with the measures recommended by the planning board’s consultant to mitigate adverse impacts upon the environment, in particular, the pond. There is no evidence that EFS rushed to complete construction in accordance with the approved original site plan. The financial detriment to EFS if required to remove these six units includes the renovation and relocation costs for Hill House ($46,875), the initial construction costs for four units of the Ocean East building (approximately 13% of the cost for Ocean East or about $100,000), demolition costs, reconstruction of foundation and refurbishing costs for the adjacent units in Ocean East ($300,000), and lost rental revenue (approximately $100 per day, per unit). If required to remove the subject six units, the financial detriment to EFS resulting from the applicant’s good-faith reliance upon the planning board’s September 1982 resolution is an undebatable quantum of prejudice.
Lastly, a viable alternative for mitigating the emergency *50vehicle circulation concern was proposed by EFS and approved by fire officials. A relatively small segment of School Lane could be opened in a half circle to provide a turnaround for emergency vehicles. Alternatively, aerial photos show that a segment of School Lane, which is already open, could be extended 50 to 100 feet to the northwest parking lot, behind Ocean West. By designating School Lane a one-way fire lane and by enforcing such designation, wildlife, after the initial excavation and paving, would only be disturbed in the event of an emergency. Since the pond is situated in the northeast corner of the parcel and School Lane runs along the western boarder, the substantive comment of a member of the planning board that the opening of School Lane would not seem to pose a threat to the pond has a rational basis.
It is noteworthy that if EFS had never submitted an application to modify the original site plan to include a 28-unit structure (Oceanside) to be located on the southern border of the premises, and a tennis court and swimming pool to be located in the center of the development, the requirement in the planning board’s September 5 1984 resolution, that the six units at issue be removed as a condition for approval of the modified site plan could never have been lawfully imposed, as this court expressly noted on the prior appeal that the "four-month Statute of Limitations precludes the granting of relief concerning construction commenced and/or completed pursuant to the September 1982 and prior resolutions” (Matter of Nielsen v Planning Bd., supra, at 769).
Based on the aforenoted facts, the mitigation measure imposed by the planning board’s September 5, 1984 resolution, which requires the demolition of six units constructed in accordance with the unchallenged September 29, 1982 resolution, when other adequate, albeit less preferable, alternatives are available to effectively mitigate an adverse environment impact identified after the completion of the project, would result in manifest injustice to EFS (see, People v Department of Hous. & Community Dev., supra). It bears repeating that EFS, in good faith, relied to its financial detriment on the untimely challenged original site plan approval of the planning board when it fully complied with the conditions initially required by the agency’s own environmental consultant to mitigate adverse environmental consequences of the project. Under these exceptional circumstances, I conclude that the planning board should be estopped from imposing as a condition to approval of EFS’s modified site plan, the removal of *51Hill House and the four units on the eastern corner of Ocean East.
(B) APPLICATION OF EQUITABLE ESTOPPEL TO BAR DESTRUCTION OF FOUR MOTEL UNITS CONSTRUCTED IN ACCORDANCE WITH THE PLANNING BOARD’S RESOLUTION FILED
MARCH 17, 1983
In my opinion, the planning board should also be estopped from requiring EFS to comply with so much of its September 5, 1984 resolution as directs the razing of the four units on the western corner of the Oceanside structure for the purpose of relocating the access driveway to this area of the development, in order to mitigate the limited sight distance concern at the present location of the access driveway on Old Montauk Highway. These four units were constructed in accordance with the planning board’s resolution filed March 17, 1983, approving EFS’s modified site plan, which was subsequently set aside for noncompliance with SEQRA in the proceeding commenced by local residents. Unlike the six units in Hill House and Ocean East which had been constructed in accordance with the untimely challenged September 29, 1982 resolution, neither the Statute of Limitations nor laches, which requires a showing of unreasonable delay, was available as a defense. However, these factors do not preclude the application of the doctrine of equitable estoppel. At the time that proceeding had been commenced, EFS had already detrimentally changed its position and incurred substantial expenses in good-faith reliance upon the planning board’s March 1983 resolution as evidenced by the fact EFS had already implemented 25% of the modified site plan. EFS had incurred about $4,000 in cost to demolish the six cottages, having an estimated value of $325,000, had excavated the site of the Oceanside structure at a cost of $6,000, had laid the footings and foundation of the Oceanside structure at a cost of $10,000, and had precut lumber and partially framed the first story at a cost of $23,000. In addition to expenses associated with this work, EFS had also incurred contractual obligations associated with building and furnishing the Oceanside structure, by the scheduled opening date—May 30, 1983. Between March 31, 1983 and April 15, 1983, a total of approximately $136,000 had been expended on the implementation of the modified site plan.
The fact EFS completed the project, at a cost of $700,000, *52pending a determination of the proceeding brought by the local residents, does not, under the circumstances of this case, vitiate EFS’s good-faith reliance upon the planning board’s March 17, 1983 resolution. Prior to having received approval in March 1983 of the modified site plan application, it was the planning board’s retained consulting firm, not an agent of EFS, that had conducted an environmental assessment study. The consulting firm had adhered to its previous recommendation to the planning board that EFS’s proposed modification of the original site plan was an unlisted action under SEQRA and that the proposed project would not result in an adverse impact on the environment. The planning board formally issued a negative declaration, after reviewing the environmental assessment forms. Subsequently, Special Term vacated a temporary restraining order and denied the local residents’ motion for a preliminary injunction against further construction pending their proceeding to set aside the planning board’s approval of EFS’s modified site plan, based upon a finding that there was not a likelihood of success on the merits. When confronted with these administrative and judicial rulings, it cannot be said that EFS acted in bad faith in proceeding with construction during the pendency of the CPLR article 78 proceeding commenced by the local residents.
Nor can I concur with the majority’s finding that EFS proceeded at its own risk in completing the project, after vacatur of a temporary restraining order and denial of the local residents’ motion for a preliminary injunction. Courts have held that injunctive relief will not issue to prohibit a fait accompli (see, Town of Oyster Bay v New York Tel. Co., 75 AD2d 598; Finger Lakes Health Sys. Agency v St. Joseph’s Hosp., 81 AD2d 403, lv denied 55 NY2d 606), even in the context of a violation of environmental protection statutes (see, Golden v Metropolitan Transp. Auth., 126 AD2d 128, supra; City of Rochester v United States Postal Serv., 541 F2d 967, supra; Florida Wildlife Fedn. v Goldschmidt, 611 F2d 547). This rule is particularly appropriate, where the proponent was slow to invoke the process of the court to preserve the status quo, during which period a project was completed at considerable cost to the builder (see, University Gardens Prop. Owners Assn. v Schultz, 272 App Div 949, rearg denied 272 App Div 977; Forstmann v Joray Holding Co., 244 NY 22; see also, Florida Wildlife Fedn. v Goldschmidt, supra; Golden v Metropolitan Transp. Auth., supra; City of Rochester v United States Postal Serv., 541 F2d 967, supra). *53The local residents had an obligation to invoke the aid of the courts to restrain construction and preserve the status quo pending their proceeding to set aside the planning board’s March 17, 1983 resolution (Goldfarb v Freedman, 76 AD2d 565). While an initial unsuccessful effort was made, the local residents did not seek leave to appeal from the denial of their motion for a preliminary injunction, nor a stay pending appeal, pursuant to CPLR 5518, to preserve the status quo (see, Governale v Porsche-Audi of Bay Ridge, 97 AD2d 457; Florida Wildlife Fedn. v Goldschmidt, supra; cf., Lieferant v Bartell, 36 Misc 2d 477). Under these circumstances, EFS did not complete construction at its own peril, so as to preclude application of the doctrine of equitable estoppel.
As in the case of the six units in Hill House and Ocean East, the financial detriment to EFS if required at this stage to remove the four units on the western corner of Oceanside and to relocate the access driveway will be unduly harsh, consisting of the initial costs for constructing the four units of Oceanside( 1/7 of the entire structure), demolition expenses, costs for rebuilding the foundation and refurbishing the adjacent units of Oceanside, the loss of rental income, and the costs for relocating the access driveway. It would be a manifest injustice to require EFS to sustain such a loss, resulting from its good-faith reliance upon the planning board’s March 1983 resolution, where an alternative measure is available to effectively mitigate the limited sight distance problem at the access driveway where it is presently located by simply requiring EFS to remove a crest in Old Montauk Highway, a measure approved by the Town Engineer and the Highway Superintendent. The inconvenience to travelers, during the regrading of a stretch of 100 feet of Old Montauk Highway, at EFS’s expense, is nominal in face of the manifest injustice EFS will incur if required to demolish the subject four units and to relocate the access driveway. Under these unique circumstances, application of the doctrine of estoppel is warranted.
Ill RELIEF
Invoking the doctrine of equitable estoppel to preclude the planning board from conditioning its September 5, 1984 approval of the modified site plan upon the removal of 10 motel units does not render meaningless this court’s previous affirmance of so much of Special Term’s judgment of October 12, *541983, as set aside the planning board’s March 17, 1983 resolution and remitted the matter to the agency for reconsideration of EFS’s modified site application after literal compliance with SEQRA. I agree with the majority that in reviewing de novo the modified site plan, the planning board was required under SEQRA to assess the environmental impact of the project as a whole and not just the impact of the 28-unit Oceanside structure in isolation (Matter of Town of Henrietta v Department of Envtl. Conservation, 76 AD2d 215). To permit noncomprehensive consideration of a project divisible into smaller parts, each of which taken alone does not have a significant impact but which taken as a whole has cumulative significant impact, would provide a clear loophole in SEQRA (cf., City of Rochester v United States Postal Serv., 541 F2d 967, 972, supra; Plan for Arcadia v Arcadia City Council, 42 Cal App 3d 712, 117 Cal Rptr 96). Concededly, a fire out of control due to insufficient access and turnaround areas for fire apparatus in the area of the project developed, pursuant to the original site plan, would impact upon the 28-unit Oceanside structure built pursuant to the modified site plan, as well as neighboring properties. Similarly, the traffic generated by the Oceanside structure, when combined with the traffic generated by the retention of 64 units constructed pursuant to the original site plan pose a potential traffic safety hazard at the presently located access drive. If the modified site plan had still been in the planning stage, the planning board, after having identified the aforenoted adverse environmental impacts, would be acting within the scope of its authority to condition approval of the modified site plan upon compliance with the best practicable measures for avoiding or minimizing such impacts to the maximum degree possible (see, ECL 8-0109 [8]; 6 NYCRR 617.9 [c]). Prior to construction, EFS would not be prejudiced by the imposition of such mitigating measures, since it would still have the option to undertake the modified site plan project or to forgo it and retain the development constructed pursuant to the original site plan. Recall that the modified site plan, as proposed by EFS, provided for the demolition of six cottages, housing 11 motel units, in exchange for the construction of a 28-unit Oceanside structure, for a net increase of 17 units. However, the conditions now imposed by the planning board would require not only the destruction of the six cottages, but also the demolition of four newly constructed units in Ocean East, the destruction of the renovated and relocated Hill House, and the costly relocation of the access and internal *55driveway in exchange for the construction of a 24, rather than a 28, unit structure, for a net increase of seven motel units, a pool and tennis court. It is dubious that a developer would have undertaken the project in the first instance, had the planning board initially conditioned approval of the modified site plan upon compliance with the mitigating measures ultimately imposed in its September 5, 1984 resolution. However, by the time the local residents had commenced their proceeding to compel literal compliance with SEQRA, EFS was financially committed to the proposal, having already completed approximately 25% of the modified site plan project. By the time Special Term rendered its order, remitting the matter to the planning board, the entire project was complete. The inequity in so much of the planning board’s September 5, 1984 resolution as conditions approval upon the destruction of 10 motel units results from the fact that construction had already proceeded to a point where, for economic reasons, it would not be feasible to alter much of the basic, modified site plan in light of subsequently discovered environmental concerns.
In considering the proper remedy once a violation of SEQRA has been shown, this court recently took cognizance of the distinction between cases where the project is still in the planning stage, as opposed to being implemented or fully completed (see, Golden v Metropolitan Transp. Auth., supra). While a determination made in violation of SEQRA is rendered a nullity (Chinese Staff & Workers Assn. v City of New York, 68 NY2d 359; Matter of Tri-County Taxpayer Assn. v Town Bd., 55 NY2d 41), these cases should not be construed as meaning that any project completed in good faith pursuant to an invalid agency determination must be "undone”, or that, as a matter of law, there must be a return to the "status quo ante” (Golden v Metropolitan Transp. Auth., supra, at 132).
In City of Rochester v United States Postal Serv. (supra), the relief fashioned by the Second Circuit to remedy a violation of NEPA after construction had proceeded to a point where for economic reasons it would not be feasible to alter much of the basic plan, is instructive with respect to fulfilling the statutory mandate of SEQRA under analogous circumstances. In that case, the United States Postal Service had decided to relocate a post-office terminal from downtown Rochester to suburban Henrietta. No environmental impact statement had been prepared in violation of NEPA. When construction of the new facility was 18% completed, the petitioners commenced *56an action to enjoin construction and to compel compliance with NEPA. Applying the doctrine of laches, the court concluded that the petitioners were barred from enjoining the construction of the new Henrietta facility, upon finding that during the delay in bringing suit construction had proceeded to a point where it was impractical for economic reasons to enjoin further development and that further construction would not create such an adverse environmental impact, beyond that already incurred by partial construction, as to override the public interest in averting the economic waste entailed from midstream termination of the construction contracts. Nevertheless, the court directed the preparation of an environmental impact statement, as if the construction decision (and activity) had not yet taken place. However, the location of the construction site was to be deemed fixed. The court believed that the preparation of an environmental impact statement from such a perspective would identify adverse environmental impacts and would not unnecessarily stifle creative consideration of methods for minimizing environmental damage at the construction site. Cognizant that it was unlikely that construction planned without the benefit of an environmental impact statement would achieve the best practicable measures for minimizing adverse environmental impacts at the construction site and that such measures might be foreclosed by the bar against relocating the site, the court opined that some useful alternatives might still be available.
Similarly, in this case, upon this court’s remittitur of the modified site plan to the planning board for reconsideration, after literal compliance with SEQRA, numerous significant environmental concerns have been identified and the creative consideration of alternative mitigating measures has not been stifled. In order to avoid manifest injustice to EFS, estopping the planning board from mitigating the access driveway limited sight distance problem and the emergency vehicle circulation problem by the method of demolishing 10 motel units will not foreclose the implementation of alternative measures that will effectively mitigate these adverse impacts, albeit those measures are not the "best” in the assessment of the lead agency—the planning board. Nevertheless, a benefit has been achieved by the planning board’s reconsideration of the modified site plan application after literal compliance with the statutory mandates of SEQRA. The application of the doctrine of equitable estoppel to prevent manifest injustice in this exceptional case does not vitiate this court’s prior holding in *57Matter of Nielsen v Planning Bd. (110 AD2d 767, supra), nor does it signal a departure from the rule of literal compliance with the environmental review procedures set forth in SEQRA and the regulations (see, Aldrich v Pattison, 107 AD2d 258, supra; Glen Head—Glenwood Landing Civic Council v Town of Oyster Bay, 88 AD2d 484, 490-491; Matter of Rye Town/ King Civic Assn. v Town of Rye, 82 AD2d 474, appeals dismissed 55 NY2d 747, lv dismissed 56 NY2d 985, rearg denied 57 NY2d 775).
Accordingly, in proceeding No. 1, I vote (1) to reverse the judgment, entered March 20, 1985; (2) to grant EFS’s petition to the extent of annulling so much of the planning board’s determination as imposed, as a condition for approval of the modified site plan, the demolition of two units in Hill House, the four units in the eastern corner of Ocean East, and the four units in the western corner of Ocean West; and (3) to remit the matter to the planning board to consider and implement alternative measures for mitigating the limited site access driveway concern and the emergency vehicle circulation concern, with the proviso that the planning board is directed to refrain from ordering the demolition of any other units. Since nonenvironmental considerations have already been incorporated into EFS’s completed original and modified site plan proposals, the planning board should be directed to choose the next best practicable alternatives which, consistent with social, economic and other essential considerations, will avoid or minimize to the maximum degree possible the aforenoted adverse impacts.
In proceeding No. 2, with respect to the judgment dated July 29, 1985, dismissing EFS’s petition to compel the building inspector to issue permanent certificates of occupancy for 64 units constructed pursuant to the original site plan approved by the planning board’s September 29, 1982 resolution, I would reverse this judgment and grant EFS’s petition to the extent of directing the building inspector to issue 64 temporary certificates of occupancy. It is clear from the record that six temporary certificates of occupancy were withheld by the building inspector for the sole reason that the planning board’s September 5, 1984 resolution, approving the modified site plan, required the removal of the two motel units in Hill House and the four eastern motel units in Ocean East. Since I conclude that the planning board is estopped from imposing as a condition for approval of the modified site plan the removal of these six units, there is no reason remaining for withhold*58ing temporary certificates of occupancy for those units. EFS will be entitled to permanent certificates of occupancy for 92 motel units, "[w]hen, after final inspection [by the building inspector], it is found that the [Beachcomber development] has been completed in accordance with the applicable building laws, ordinances and regulations; and also in accordance with the application, plans and specifications filed in connection with the issuance of the building permit[s]” (see, Code of Town of East Hampton § 53-15; see also, § 153-10-40). The latter would include compliance with the planning board’s resolution of September 5, 1984 (except for the conditions requiring the removal of the subject 10 units) and any alternative measures the planning board may impose for mitigating the limited sight access driveway concern and the emergency vehicle circulation concern.
Lawrence, J. P., Eiber and Spatt, JJ., concur; Rubin, J., dissents and votes to reverse the judgments entered March 20, 1985, and dated July 29, 1985, respectively, and to grant the petitions of E.F.S. Ventures Corp. to the extent of annulling so much of the planning board’s determination as imposed, as a condition for the approval of the petitioner’s modified site plan, the removal of 10 motel units and the relocation of the access driveway to the development, remitting the matter to the planning board for reconsideration and implementation of an alternative measure not involving the removal of any motel units for mitigating the environmental impacts pertaining to interior traffic circulation for emergency vehicles and sight distance at the access driveway, and compelling the building inspector to issue 64 temporary certificates of occupancy, with an opinion.
Ordered that the judgments are affirmed, without costs or disbursements.