- Revenue 2024
- $35,411,298
- Expenses 2024
- $37,408,233
Program services were 79.8% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.
As filed
- Subsection
- 03
- NTEE code
- C320
- Classification
- 1280
- Street
- 6 HERNDON AVE
These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).
Officers and directors · 2024
As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.
-
Hilary H Falk
President
- Total calculated
- $403,312
- From this org
- $367,595
- From related orgs
- $0
- Other
- $35,717
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $353,362
- Bonus
- $148
- Other
- $14,085
- Deferred
- $14,085
- Nontaxable benefits
- $21,632
- Filer's total
- $403,312
-
Otis S Jones
Chair
- Total calculated
- $0
- Hours/week
- 4
-
Ann Pelham
Vice Chair
- Total calculated
- $0
- Hours/week
- 4
-
Bruce R Bradley
Trustee
- Total calculated
- $0
- Hours/week
- 4
-
Joan P Brock
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
George B Clarke IV
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Brian Cobb
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Margaret M Freeman
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Alexandra Grayson
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Jennifer E Green
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Harry S Gruner
Trustee
- Total calculated
- $0
- Hours/week
- 4
-
Ann D Horner
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Robert A Kinsley II
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Jonathan D Manekin
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Anne Mehringer
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Mamie A Parker PHD
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Crystal Patterson
Trustee
- Total calculated
- $0
- Hours/week
- 4
-
Nick Pomponi
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Samara Pyfrom
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Christa Riepe
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Nathanial J Rose
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Kathryn Gilchrist Simpson
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
J Sedwick Sollers III
Trustee
- Total calculated
- $0
- Hours/week
- 4
-
J Alex Ward
Trustee
- Total calculated
- $0
- Hours/week
- 1
-
Denice Heller Wardrop
Trustee
- Total calculated
- $0
- Hours/week
- 1
The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.
Filings
-
2024
- Revenue
- $35,411,298
- Expenses
- $37,408,233
- Contributions
- $27,417,431
- Grants paid
- $668,182
-
2023
- Revenue
- $36,221,171
- Expenses
- $35,057,375
- Contributions
- $29,421,478
- Grants paid
- $406,027
-
2022
- Revenue
- $32,201,003
- Expenses
- $34,140,334
- Contributions
- $26,605,958
- Grants paid
- $314,928
The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.
Other returns filed
-
2024 · 990-T
- Revenue
- not reported
- Expenses
- not reported
- Assets (EOY)
- not reported
-
2023 · 990-T
- Revenue
- not reported
- Expenses
- not reported
- Assets (EOY)
- not reported
-
2022 · 990-T
- Revenue
- not reported
- Expenses
- not reported
- Assets (EOY)
- not reported
Nonprofiteer parses the Form 990 only. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.
Grants made
-
$146,692
2024 Chesapeake Bay Trust Grant Program Administration
-
$136,088
2022 Chesapeake Bay Trust Grant Program Administration
-
$133,887
2023 Chesapeake Bay Trust Grant Program Administration
-
2024 Expanding Rotational Grazing through the Mountains to Bay Grazing Alliance.
-
Center for Watershed Protection Inc
$101,543
2024 Choptank: Building Capacity to Enhance Watershed and Community Health
-
2023 Greening Faith Places and Community Spaces project to enhance water quality improvement efforts in Central Virginia.
-
2024 Keystone 10 million trees project for restoration of the city of Greenbelt's Parkway Creek
-
2023 Choptank: Building Capacity to Enhance Watershed and Community Health
-
$37,500
2022 Restoring Oysters in the Baltimore Harbor
-
Capital Area Intermediate Unit
$31,313
2024 Build and strengthen effective MWEEs into sustained and systemic student-led environmental action teams in Pennsylvania.
The 10 largest by cash amount. The API serves every itemized grant.
Grants received
-
THE AYCO CHARITABLE FOUNDATION
$1,754,300
2023 ENVIRONMENT & ANIMAL PROTECTION
-
NATIONAL FISH AND WILDLIFE FOUNDATION
$1,597,020
2024 PROTECT UPPER POTOMAC WATERSHED WITH WETLANDS
-
VIRGINIA ENVIRONMENTAL ENDOWMENT
$1,152,830
2022 BUFFER RESTORATION IN THE UPPER JAMES RIVER WATERSHEDPHASE 2
-
2024 For grant recipient's exempt purposes
-
2022 FOR RECIPIENT'S EXEMPT PURPOSE
-
2023 PROTECT UPPER POTOMAC WATERSHED WITH WETLANDS MD
-
2022 CHESAPEAKE BAY STEWARDSHIP
-
2022 For grant recipient's exempt purposes
-
$450,600
2024 ENVIRONMENT, ANIMALS
-
2022 PREVENTING ANY NEW FRACKED GAS COMPRESSOR STATIONS, THE BAMA WORKS 2022 GRANT, AND GENERAL PURPOSES
The 10 largest by cash amount. The API serves every itemized grant.
Other IRS files
Auto-Revocation List
Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.
Publication 78
Listed as of 10 September 2026, under deductibility PC.
These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.