WATERS, Member,
This matter comes before the board as an appeal from a decision of the Department of Environmental Resources to [755]*755spray a pesticide1 over 8102 acres of privately owned forest land located in Northampton County, Pa. The purpose of the proposed spraying is to control an expected attack by the Gypsy Moth3 in the spring and summer of 1972.
This appeal of the Ecological Protection Society, Inc., a nonprofit corporation with an interest in preserving the environment of Northampton County, and an individual Haydon Pritchard4 was filed alleging that they had been given no opportunity to be heard on the decision to use an aerial pesticide spray, that such spray was unsafe and that there were acceptable alternatives to deal with the Gypsy Moth problem. A supersedeas was requested by appellant, but at the hearing the parties agreed that, inasmuch as no spraying was contemplated in the area, before a final decision was rendered by this board, the supersedeas question was moot.
The law clearly provides that the requirements of due process are met so long as a hearing is provided at any stage in the proceeding before final action is taken.5
The Department of Environmental Resources (hereinafter called “Department”) contends initially that the appellant, Ecological Protection Society, [756]*756Inc. (hereinafter called “Ecological”), lacks standing to take this appeal. It is their position that, in any event, the proposed Gypsy Moth program is an environmentally safe and effective method of immediately dealing with a difficult infestation problem in Northampton County.
The pesticide problem was first brought into sharp focus in this country by Rachel Carson in her celebrated and (berated) book “Silent Spring.” Despite the overwhelming evidence there presented of the danger of pesticide residues, public and governmental apathy often persist.6
Juxtaposed with the environmental impact of pesticides is the extremely destructive Gypsy Moth, which in its larval or caterpillar stage is an unsightly leaf-eater, whose population density rapidly increases7 to a point at which it can in a few weeks denude an entire forest of oak trees.8
FINDINGS OF FACT
1. The department has properly determined that there will be a heavy infestation of the Gypsy Moth in a certain area of Northampton County in 1972 and, unless some action is taken, substantial damage will result to many trees in the area.
[757]*7572. The Gypsy Moth, in one of its stages of development, is an unsightly, defoliating, destructive, prolific pest.
3. Appellant, Haydon Pritchard, a naturalist and nearby resident of the proposed spray area, has substantial interest in maintaining and preserving the natural environment of the proposed spray area. Ecological Protection Society has not shown such interest.
4. On February 18, 1972, the department notified the County of Northampton of its finding evidence of Gypsy Moth infestation and offered to finance two-thirds of the cost of a project to use an aerial spray over an area of the county, with the cooperation of the county, to control the Gypsy Moth.
5. The County of Northampton by resolution of March 16, 1972, and by various methods including regular mail, radio and newspapers, attempted to advise the owners of the 1,975 acres (known as spray areas 8 and 9), of the proposal, and to elicit objections from those opposed to having their property sprayed.
6. As a result of objections and complaints received from Bangor Water Company and Blue Mt. Consolidated Water Company, the intended spray area was reduced from 1,975 to 810 acres.
7. Some residents of the proposed spray area did not receive adequate personal notice of the intentions of the department and the county to spray the area.
8. The department proposes to spray from helicopters Trichlorfon, a chemical formula produced by Chemagro Corporation and known as Dylox (80 percent.)
9. The formula which the department proposes to use is not fully registered with the Federal govern[758]*758ment9 for use against the Gypsy Moth, although another formula, (U.L.V.), which has basically the same properties,10 is so registered.
10. The formula Dylox (80 percent) has been used in small test areas, and in 1972 it was given a temporary registration which permits its use in larger test areas. This is the procedure whereby information on the effects of a chemical pesticide is obtained which can then be used to apply for full registration of the pesticide for use against the Gypsy Moth.
11. The proposed spraying in Northampton County is intended to accomplish not only the immediate control of the Gypsy Moth infestation, but also will be used as part of a program to gather additional scientific information on the environmental impact of the Dylox (80 percent) formula when used over a large area.
12 There is some scientific evidence which indicates that the formula of Dylox (80 percent) can persist in the environment up to 126 days on leaf litter; can produce a product called Vapona upon chemical breakdown which can be five times more toxic than the original formula: It (Dylox) can deplete the immediately available food supply for certain birds and cause them to leave the area, and, when used contrary to directions, can have discomforting effects on humans.
13. Although all studies to date of the effects of Dylox (80 percent) indicate that it is, when properly used, an effective measure (95 percent) to bring the [759]*759Gypsy Moth under rapid temporary control, without known major or long-term detrimental effects on the environment, other treatment methods appear to be more promising as permanent solutions to the Gypsy Moth problem.
14 More scientific information is needed on the long and short-range effects of the Dylox formula (80 percent) on aquatic insects, certain birds and wildlife and the environment generally.
15 The Bushkill Watershed Association of Northampton County passed a resolution May 5, 1972, opposing the aerial spraying of the chemical pesticide as proposed, in the confines of the Bushkill Watershed.
CONCLUSIONS OF LAW
On the basis of the foregoing findings of fact, the Environmental Hearing Board concludes as follows:
1. The Environmental Hearing Board has jurisdiction in this case.
2. The individual appellant, Haydon Pritchard, has standing to take this appeal; the Ecological Protection Society, Inc., does not.
3. The burden of proof is upon appellant, to show that the decision of the department is arbitrary, unreasonable, unsafe or, for some reason, not properly directed to solve the problem for which it was designed, and is, therefore, an abuse of discretion.
4. Appellant has failed to present evidence sufficient to require a reversal of the decision of the department, except as indicated hereinafter.
5. Notice of the proposed spraying given to residents of the proposed spray area was inadequate.
6.
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WATERS, Member,
This matter comes before the board as an appeal from a decision of the Department of Environmental Resources to [755]*755spray a pesticide1 over 8102 acres of privately owned forest land located in Northampton County, Pa. The purpose of the proposed spraying is to control an expected attack by the Gypsy Moth3 in the spring and summer of 1972.
This appeal of the Ecological Protection Society, Inc., a nonprofit corporation with an interest in preserving the environment of Northampton County, and an individual Haydon Pritchard4 was filed alleging that they had been given no opportunity to be heard on the decision to use an aerial pesticide spray, that such spray was unsafe and that there were acceptable alternatives to deal with the Gypsy Moth problem. A supersedeas was requested by appellant, but at the hearing the parties agreed that, inasmuch as no spraying was contemplated in the area, before a final decision was rendered by this board, the supersedeas question was moot.
The law clearly provides that the requirements of due process are met so long as a hearing is provided at any stage in the proceeding before final action is taken.5
The Department of Environmental Resources (hereinafter called “Department”) contends initially that the appellant, Ecological Protection Society, [756]*756Inc. (hereinafter called “Ecological”), lacks standing to take this appeal. It is their position that, in any event, the proposed Gypsy Moth program is an environmentally safe and effective method of immediately dealing with a difficult infestation problem in Northampton County.
The pesticide problem was first brought into sharp focus in this country by Rachel Carson in her celebrated and (berated) book “Silent Spring.” Despite the overwhelming evidence there presented of the danger of pesticide residues, public and governmental apathy often persist.6
Juxtaposed with the environmental impact of pesticides is the extremely destructive Gypsy Moth, which in its larval or caterpillar stage is an unsightly leaf-eater, whose population density rapidly increases7 to a point at which it can in a few weeks denude an entire forest of oak trees.8
FINDINGS OF FACT
1. The department has properly determined that there will be a heavy infestation of the Gypsy Moth in a certain area of Northampton County in 1972 and, unless some action is taken, substantial damage will result to many trees in the area.
[757]*7572. The Gypsy Moth, in one of its stages of development, is an unsightly, defoliating, destructive, prolific pest.
3. Appellant, Haydon Pritchard, a naturalist and nearby resident of the proposed spray area, has substantial interest in maintaining and preserving the natural environment of the proposed spray area. Ecological Protection Society has not shown such interest.
4. On February 18, 1972, the department notified the County of Northampton of its finding evidence of Gypsy Moth infestation and offered to finance two-thirds of the cost of a project to use an aerial spray over an area of the county, with the cooperation of the county, to control the Gypsy Moth.
5. The County of Northampton by resolution of March 16, 1972, and by various methods including regular mail, radio and newspapers, attempted to advise the owners of the 1,975 acres (known as spray areas 8 and 9), of the proposal, and to elicit objections from those opposed to having their property sprayed.
6. As a result of objections and complaints received from Bangor Water Company and Blue Mt. Consolidated Water Company, the intended spray area was reduced from 1,975 to 810 acres.
7. Some residents of the proposed spray area did not receive adequate personal notice of the intentions of the department and the county to spray the area.
8. The department proposes to spray from helicopters Trichlorfon, a chemical formula produced by Chemagro Corporation and known as Dylox (80 percent.)
9. The formula which the department proposes to use is not fully registered with the Federal govern[758]*758ment9 for use against the Gypsy Moth, although another formula, (U.L.V.), which has basically the same properties,10 is so registered.
10. The formula Dylox (80 percent) has been used in small test areas, and in 1972 it was given a temporary registration which permits its use in larger test areas. This is the procedure whereby information on the effects of a chemical pesticide is obtained which can then be used to apply for full registration of the pesticide for use against the Gypsy Moth.
11. The proposed spraying in Northampton County is intended to accomplish not only the immediate control of the Gypsy Moth infestation, but also will be used as part of a program to gather additional scientific information on the environmental impact of the Dylox (80 percent) formula when used over a large area.
12 There is some scientific evidence which indicates that the formula of Dylox (80 percent) can persist in the environment up to 126 days on leaf litter; can produce a product called Vapona upon chemical breakdown which can be five times more toxic than the original formula: It (Dylox) can deplete the immediately available food supply for certain birds and cause them to leave the area, and, when used contrary to directions, can have discomforting effects on humans.
13. Although all studies to date of the effects of Dylox (80 percent) indicate that it is, when properly used, an effective measure (95 percent) to bring the [759]*759Gypsy Moth under rapid temporary control, without known major or long-term detrimental effects on the environment, other treatment methods appear to be more promising as permanent solutions to the Gypsy Moth problem.
14 More scientific information is needed on the long and short-range effects of the Dylox formula (80 percent) on aquatic insects, certain birds and wildlife and the environment generally.
15 The Bushkill Watershed Association of Northampton County passed a resolution May 5, 1972, opposing the aerial spraying of the chemical pesticide as proposed, in the confines of the Bushkill Watershed.
CONCLUSIONS OF LAW
On the basis of the foregoing findings of fact, the Environmental Hearing Board concludes as follows:
1. The Environmental Hearing Board has jurisdiction in this case.
2. The individual appellant, Haydon Pritchard, has standing to take this appeal; the Ecological Protection Society, Inc., does not.
3. The burden of proof is upon appellant, to show that the decision of the department is arbitrary, unreasonable, unsafe or, for some reason, not properly directed to solve the problem for which it was designed, and is, therefore, an abuse of discretion.
4. Appellant has failed to present evidence sufficient to require a reversal of the decision of the department, except as indicated hereinafter.
5. Notice of the proposed spraying given to residents of the proposed spray area was inadequate.
6. Objections to the spraying raised by and in the area of the Bushkill Watershed Association are reasonable and must be considered.
[760]*7607. Under authority granted by the Act of December 3, 1970, P.L. 834, sec. 1902-A(4), the Department has the right to spray the pesticide Dylox (80 percent) for the emergency treatment of Gypsy Moth infestation in the proposed areas of Northampton County, excluding, however, a part of the Bushkill Watershed.
DISCUSSION
To spray or not to spray, that is the question. This is the first major case involving the large scale use of pesticides in the environment, to come before the board. The case is both unique and thorny, because it presents a situation in which even the conservationists and environmentalists are divided among themselves.
To spray is to place into the air, by which we all live, a chemical pesticide which has not been registered by the Federal government and all of the results of which are not fully known to science. Not to spray is to abandon large segments of our beautiful wooded recreation and residential areas in Northampton County to the ugly, rapidly multiplying Gypsy Moth, which will surely damage and kill thousands of trees if not immediately checked.
This appeal was brought by a corporation, the Ecological Protection Society, and Dr. Haydon Pritchard, an individual. We find that only Dr. Haydon Pritchard has standing, because of the uncertainty of the membership of the corporation: Sierra Club v. Morton, No. 70-34 U. S. Supreme Court (1972), Environmental Hearing Board Rule 6(b).
In Committee to Preserve Mill Creek et al. v. Secretary of Health, et al., 3 Com. Ct. 200, the court denied standing to an organization which had described itself as a “a group of citizens . . . concerned with the preservation of the Mill Creek Valley and its [761]*761flood plain as a public asset.” The court there said, after finding that the individual appellants did have standing:
“The Committee to Preserve Mill Creek is on an entirely different footing. It is not the owner of land near the site and it it is not the authorized agent of any such owner and cannot, therefore, in the legal sense be aggrieved by the grant of the permit or have a direct interest in the denial of the appeal to the secretary. See Cleaver Appeal, 24 D. & C. 2d 483 (1961).”
The department proceeds under the powers and duties given to it by Act 275, sec. 1902-A(4), which is an amendment to The Administrative Code of April 9, 1929, P. L. 177. That law specifically imposes upon the department the duty “. . . to protect all forest land in the State from . . . , insects, and other enemies, to promote and develop forestry and knowledge of forestry throughout the State.” In addition, the department is authorized to “promote and advance any other activity in local forestry which the Department may deem helpful to the public interest.”
It is, therefore, clear that the Gypsy Moth program is an exercise of the police power of the State. The police power, which authorizes a State to make all laws for the general health, welfare and safety of its citizens11 is, of course, not unlimited. The laws must not be unduly oppressive and the means employed must have a real and substantial relation to the objects sought to be attained.12
Inasmuch as there is a presumption in favor of the [762]*762propriety of the actions of government officials, the burden of proof is clearly upon appellant to show that proposed Gypsy Moth program is not a proper exercise of the authority granted.
Investigation by the department and previous experience has shown that, by all indications, Gypsy Moth infestation and damage will be great unless some immediate treatment is undertaken. Although there is some question about the predictability of future damage of the Gypsy Moth,13 there is no serious dispute about the heavy temporary damage that it can inflict.
The question then becomes: Is the department’s proposal reasonable under the circumstances?
As might be expected, it is at this point that the battle of the experts begins in earnest.14
Let us examine the alternatives debated at length.
The various alternative treatment methods available include the following:
A. Ground Spray.
Here the time and cost involved, as well as the fact that there is less control of the quantity of spray placed on each tree, make this method less desirable.
B. Painting the Eggs With Insecticide.
This process is even more painstaking and difficult than the ground spray operation. It takes a trained eye to find the eggs and many are missed altogether. [763]*763Over a large area, the total result would not be satisfactory.
C. Bacillus Thuringiensis (Bt).
A bacteriological spray is itself still undergoing tests to determine its long-range effects. It is a promising alternative but not yet fully registered for use over large areas.15
D. Banding.
This control method, which requires a band to be placed around the tree to prevent the moth in its caterpillar stage, from returning up the tree after it once leaves, might be ideal to protect a few important large backyard shade trees, but is impractical over a forest.16
E. Allozo Gypsy Moth to Run Natural Course.
This is an alternative that has had varying results in different areas. The department has elected to treat this area because it is used for both recreational and residential purposes. Many thousands of unused forest acres where some damage is expected will go untreated.
Much testimony related to the problem of “drift” of the pesticide while being sprayed from the air.
Indeed, the major complaint of appellant, Dr. Pritchard, a biologist, was not about the use of the pesticide Dylox but the method of aerial, as opposed to a ground, spray application.
We find that the detailed safety precautions to be [764]*764used at the time of spraying17 are adequate, with one exception. It was indicated that there were no plans to notify hikers or others entering the spray area while the operation is taking place. This omission we find to be unreasonable.
An important conclusion reached from the lengthy expert testimony in this case was that each witness was found to be well qualified in his field, candid and credible. Inasmuch as the opinion testimony was to some extent contradictory, at first blush this would appear to further complicate the matter and defy solution. In fact, it leads directly to our resolution.
The major difficulty faced by each expert witness was the fact that there is limited information available on the long- and short-range effects of the pesticide formula in question upon the soil and water of a large forest area. Testing is, after all, the very heart of the scientific process, and very little testing has been done over large areas with this formula.18 In their excellent study, Aerial Application of Insecticides for Control of the Gypsy Moth, C. C. Doone and P. W. Schaefer,19 after finding the formula of Dylox [765]*765(80 percent) about 99 percent effective against the Gypsy Moth, concluded . . the effect of systematic insecticide coverage on large townships appears detrimental to some birds, particularly to any nestlings which require considerable amounts of food at a time when the insect biomass has been decimated. This bird-insect control relationship should be studied in depth.”
The need for additional testing of the Dylox formula is one reason why it is important to Chemagro and others20 that this Gypsy Moth program go forward. More information is needed about the environmental effects of the spray other than upon the Gypsy Moth.
The only way new information can be obtained is by further testing. To prohibit this is to choke off at its inception the attempt to develop what could be an extremely effective, safe, emergency weapon in man’s fight against the Gypsy Moth.
Therefore, it is the very paucity of scientific information with which appellant’s expert witnesses were faced which made it impossible for appellant to carry its burden of proof: Upper Darby National Bank v. Finnegan, 68 Dauph. 53, vol. 1, P.L.E. Adm. Law, 83. In effect, he could not prove the environmental harm of the proposed spraying would outweigh the benefits involved, because there is still much that can only be learned by further large scale testing.21
As the testimony indicated, the Dylox (80 percent) [766]*766formula in question was not yet fully registered because additional information first had to be gathered from large area tests and submitted to the Federal government.22
If each State were to completely prohibit any further aerial spraying of this pesticide formula, until it is fully registered, then the very information needed to obtain registration would be put beyond reach. It would, in effect, be a vicious circle, held together by a Gordian knot.
We conclude that appellant has failed to offer substantial evidence to support his allegation that the proposed spraying will be detrimental to the health, welfare and safety of the residents of Northampton County.
One final matter requires our attention.
Although form letter notices of the proposed pesticide spraying operation were sent to residents in the spray area, and other attempts were made to notify the property owners of the project, the testimony nevertheless shows that some residents were not previously, properly or adequately notified.
The requisites of due process are just as applicable in administrative proceedings as in judicial proceedings: Bridgewater Borough v. Pennsylvania Public Utility Commission, 181 Pa. Superior Ct. 84, West Penn Power Co. v. Pennsylvania Public Utility Commission, 174 Pa. Superior Ct. 123.
The most basic of rights and, indeed, the very cornerstone of our Constitution (Williams v. Yellow Cab Co. of Pittsburgh, Pa., 200 F.2d 302), is the requirement of due process. The keystone of due process is notice, and opportunity to be heard: National [767]*767Automobile Corporation v. Barfod, 289 Pa. 307. Here, we have the prospect that a property owner may have his trees sprayed with a pesticide without his knowledge, let alone his consent. Clearly, this cannot be permitted.
The letters which were sent to residents of the area, calling for a response only if the property owner objected to the proposal, is just another way of trying to exhume the now discredited doctrine of silence being construed as consent: Cohen v. Johnson, 91 F. Supp. 231.
In the same vein is the plan to spray at an appointed hour with no notice being given to persons who might for various legitimate reasons find themselves in the spray area at that time. We do not propose the impossible, but we do insist that every reasonable measure be taken to give actual personal notice to all persons who may be affected by the proposed aerial spraying.23
Finally, appellant and Bushkill Watershed Association indicated that they are opposed to spraying in the area covered by the watershed. Its boundaries, however, are somewhat inexact. We feel that, inasmuch as there is some dispute as to the effect of [768]*768Dylox (80 percent) on certain aquatic life, and since the headwaters of the little Bushkill Creek run far beyond the confines of the spray area and the spray area was previously altered substantially to delete other property where large amounts of water are located from the spray proposal, we believe aerial spraying over this area should be prevented.
ORDER
1. The department or the County of Northampton shall give individual written notices by certified mail or personal service to each resident of the proposed spray area. The notice shall indicate the approximate date and time of spray and any special precautions deemed appropriate.
2. The department shall conspicuously post at least one notice along each road leading into the spray area, containing the same information required in the notice to residents. One hour prior to spray, during spray and until one hour thereafter, the mainly traveled roads entering the area shall have located at their entrance point a person to give notice of the spraying operation to incoming persons.
3. The department may air spray with Dylox (80 percent) all of the area indicated on proposed spray charts offered into evidence as department’s exhibits 1 and 2, marked as areas 8 and 9, with the following exception in area 8:
4. The department shall not spray the area referred to generally as the headwaters of the Little Bushkill Creek, and shall use Legislative Route 48088 as the northernmost boundary of said headwaters area. No spraying shall be carried out in area 8 to the south of Legislative Route 48088.
5. A summary of any scientific conclusions [769]*769reached after a follow-up study of the spray area shall be made available to the board and to appellant.