Nonprofit · EIN 23-7444529
MT DIABLO INTERPRETIVE ASSOC
Tax-exempt · WALNUT CREEK, CA 94597
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $394,360 | $325,946 | $68,414 | $1,311,871 | $12,058 | $1,299,813 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $267,162
- Membership dues
- $1,085
- Program service revenue
- $140
- Investment income
- $33,345
- Net income from sales of inventory
- $93,713
- Other revenue
- $93,713
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $7,862
- Program services (functional)
- $303,767
- Management and general (functional)
- $20,394
- Fundraising (functional)
- $1,785
Balance sheet and other
- Total assets, start of year
- $1,234,905
- Total assets, end of year
- $1,311,871
- Total liabilities, end of year
- $12,058
- Net assets, end of year
- $1,299,813
- Net assets without donor restrictions
- $1,299,813
- Gross receipts
- $499,861
- Employees
- 0
- Volunteers
- 35
- Year formed
- 1974
- State of legal domicile
- CA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LESLIE CONTRERAS | Director Trustee or director | 4 | $0 |
| DANIEL FITZGERALD | Treasurer Trustee or director, Officer | 12 | $0 |
| CAROL LANE | Director Trustee or director | 8 | $0 |
| MIKE BRANDY | Vice President Trustee or director, Officer | 16 | $0 |
| DICK NICOLL | Director Trustee or director | 12 | $0 |
| TERESE DIXON | Director Trustee or director | 8 | $0 |
| STEVE VIARENGO | Director Trustee or director | 4 | $0 |
| JULIE BRAUN MARTIN | Director Trustee or director | 8 | $0 |
| MARK BRAUER | Director Trustee or director | 4 | $0 |
| LINDA KWONG | Director Trustee or director | 4 | $0 |
| DAN SANDRI | Secretary Trustee or director, Officer | 12 | $0 |
| STEVE SMITH | President Trustee or director, Officer | 16 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 346, WALNUT CREEK, CA 94597-0346
- Principal officer (990 for 2025)
- DANIEL FITZGERALD, PO BOX 346, WALNUT CREEK, CA 945970346
- Signed the 990
- DAN FITZGERALD, Treasurer
- Phone
- (925) 927-7222
- Return prepared by
- Krisch & Company
Mission
TO ASSIST WITH MAINTAINING AND INTERPRETING MOUNT DIABLO STATE PARK, AN ECOLOGICAL TREASURE OF THE SAN FRANCISCO BAY AREA.
Program accomplishments
- EDUCATION CENTER-MDIA IS PARTNERING WITH THE WILDLIFE CONSERVATION BOARD TO DEVELOP THE MITCHELL CANYON VISITOR CENTER PROVIDING VISITORS WITH STATE PARK HISTORY, EDUCATION ABOUT HABITAT AND WILDLIFE, TRAIL MAPS, AND A MEETING POINT FOR ALL VISITORS.Expenses $284,550
- MAINTENANCE OF PARK FACILITIES - FUNDING OF PARK MAINTENANCE PROJECTS AND EVENTS, INCLUDING EARTH DAY AND OTHER PARK RESTORATION EVENTS, TRAIL MAINTENANCE AND SIGNAGE, TRASH REMOVAL AND PURCHASE OF PARK EQUIPMENT.Expenses $8,096
- INTERPRETATION AND OUTREACH - FUNDING OF MERCHANDISING AND OPERATION OF TWO VISITOR CENTERS, VOLUNTEER ASSISTANCE PROGRAMS, SCHOOL AND JR. RANGER PROGRAMS, INTERPRETIVE TALKS AND EVENTS, HIKES, NATIVE PLANT GARDEN, AND INTERPRETIVE WEBSITE.Expenses $5,900
- PUBLICATIONS AND VIDEOS - CREATION, PUBLICATION AND DISTRIBUTION OF INTERPRETIVE PUBLICATIONS AND VIDEOS.Expenses $5,221
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 23-7444529
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1975
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Recreation and sports (N320)
- Assets (IRS master file)
- $1,311,871
- Income (IRS master file)
- $499,861
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | – | – | – | IRS |
| 990 | December 2024 | – | – | – | IRS |
| 990 | December 2023 | $541,060 | $333,444 | $971,715 | IRS |
| 990 | December 2022 | $284,012 | $76,908 | $764,473 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS.
Questions about MT DIABLO INTERPRETIVE ASSOC
- What is the EIN of MT DIABLO INTERPRETIVE ASSOC?
- The employer identification number (EIN) of MT DIABLO INTERPRETIVE ASSOC is 23-7444529.
- Is MT DIABLO INTERPRETIVE ASSOC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1975.
- Are donations to MT DIABLO INTERPRETIVE ASSOC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does MT DIABLO INTERPRETIVE ASSOC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of MT DIABLO INTERPRETIVE ASSOC due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did MT DIABLO INTERPRETIVE ASSOC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of MT DIABLO INTERPRETIVE ASSOC?
- The 990 for the year ended December 31, 2025 names DANIEL FITZGERALD.
- Who are the officers and directors of MT DIABLO INTERPRETIVE ASSOC?
- The 990 for the year ended December 31, 2025 lists 12 people; 0 received compensation from the organization.
- How much revenue does MT DIABLO INTERPRETIVE ASSOC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $394,360, expenses of $325,946 and total assets of $1,311,871 at year end.
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