Federal contract award
68HERH20F0394
NEW AWARD MAINTENANCE AND ENHANCEMENTS OF THE AMERICAN METEOROLOGICAL SOCIETY/ENVIRONMENTAL PROTECTION AGENCY (AMS/EPA) REGULATORY MODEL (AERMOD) MODELING SYSTEM (APP-OAR-20-00008)
Award details
Obligations, current value and potential value describe different measures; they are never added together.
| Field | Reported value |
|---|---|
| Agency | Environmental Protection Agency |
| Office | LAND, ENFORCEMENT, AND AIR DIVISION |
| NAICS | 541620 — Environmental Consulting Services |
| PSC | F999 — Other Environmental Services, Studies, and Analytical Support |
| Parent award / vehicle | GS00F314CA |
| Set-aside | Not reported |
| Pricing type | FIRM FIXED PRICE |
| Obligations | $3.9M |
| Current contract value | $5.1M |
| Potential contract value / ceiling | $5.1M |
| Start date | Sep 1, 2020 |
| Current end date | Mar 5, 2026 |
| Potential end date | Mar 5, 2026 |
| Latest award activity | Apr 29, 2026 |
| Source loaded | Sep 26, 2026 |
Funding and modification history
Showing the latest 68 of 68 loaded transactions. Negative values are deobligations.
| Date | Modification | Obligation change | Description |
|---|---|---|---|
| Apr 29, 2026 | P00067 | $-52.6K | MOD - 0067 - DEOBLIGATION AND CLOSE OUT CONTRACT |
| Feb 24, 2026 | P00066 | $-29.0K | MOD - 00066 DEOBLIGATION OF $29,000.00 |
| Feb 11, 2026 | P00065 | $0 | MOD - 00065 CHANGE THE ALTERNATE COR AND INVOICE APPROVER FROM DARRYL PAUL TO SHARON PHILLIPS |
| Nov 7, 2025 | P00064 | $0 | MOD - 00064 THE PURPOSE OF THIS MODIFICATION IS TO EXTEND THE POP TO MARCH 5, 2026. |
| Oct 15, 2025 | P00063 | $196.7K | MOD 62 - ADD FUNDING TO GREENBOOK |
| Jul 28, 2025 | P00062 | $81.0K | MOD 62 - ADD FUNDING TO GREENBOOK |
| Jul 2, 2025 | P00061 | $160.0K | MOD 61 - FUNDING TO EXTEND PERIOD OF PERFORMANCE TO JANUARY 8, 2026 |
| May 16, 2025 | P00060 | $0 | MOD 60 - REPLACING THE ALTERNATE COR AND INVOICE APPROVER MOD 59 - INCREMENTALLY FUNDING IN THE AMOUNT OF $35,000.00 |
| Apr 15, 2025 | P00059 | $35.0K | MOD 59 - INCREMENTALLY FUNDING IN THE AMOUNT OF $35,000.00 |
| Feb 21, 2025 | P00058 | $40.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING FOR $40,000.00 AND MOVE A CAPACITY OF $150,000.00 FROM CLIN 3001 TO CLIN 4001 |
| Jan 31, 2025 | P00057 | $20.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD THE COR AND ALT COR. ADD FUNDING FOR $20,00.00 |
| Dec 31, 2024 | P00056 | $125.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING AND CHANGE COR TO CAROLYN BLAKE FROM ANTONIO LEATHERS |
| Nov 27, 2024 | P00055 | $145.0K | THE PURPOSE OF THIS MODIFICATION ADD FUNDING |
| Nov 14, 2024 | P00054 | $0 | THE PURPOSE OF THIS MODIFICATION IS SHIFTING FUNDS |
| Oct 30, 2024 | P00053 | $50.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING TO OPTION PERIOD 4 - CLIN 4001: $ 50,000.00 (AERMOD) |
| Aug 7, 2024 | P00052 | $212.5K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING TO OPTION PERIOD 4 - CLIN 4001: $ 50,000.00 (AERMOD) CLIN 4001: $112,531.00 (AERMOD) CLIN 4001B:$ 50,000.00 (FRED/GREENBOOK) |
| Jul 17, 2024 | P00051 | $35.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING TO OPTION PERIOD 4 |
| Jun 27, 2024 | P00050 | $10.0K | THE PURPOSE OF THIS MODIFICATION IS TO EXERCISE OP 4 AND ADD FUNDING IN THE AMOUNT OF $10,000.00. |
| Jun 5, 2024 | P00049 | $90.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING IN THE AMOUNT OF $90,000.00 |
| Apr 4, 2024 | P00047 | $100.0K | THE PURPOSE OF THIS MODIFICATION IS ADD FUNDING IN THE AMOUNT $100,000.00 |
| Apr 4, 2024 | P00048 | $0 | THE PURPOSE OF THIS MODIFICATION IS TO SHIFT FUNDS FOR $1,425.93 |
| Jan 24, 2024 | P00046 | $0 | THE PURPOSE OF THIS MODIFICATION IS TO ADD CORRECT THE LANGUAGE ON PAGE 2 OF MODIFICATION 45 |
| Dec 21, 2023 | P00045 | $50.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING THE AMOUNT OF $50,000.00 |
| Dec 12, 2023 | P00044 | $150.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING THE AMOUNT OF $150,000.00 |
| Nov 6, 2023 | P00043 | $100.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING THE AMOUNT OF $100,000.00 |
| Sep 21, 2023 | P00042 | $40.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING THE AMOUNT OF $40,000.00 |
| Sep 19, 2023 | P00041 | $145.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Aug 15, 2023 | P00040 | $40.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Aug 1, 2023 | P00038 | $45.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Aug 1, 2023 | P00039 | $35.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Jul 7, 2023 | P00037 | $0 | THE PURPOSE OF THIS MODIFICATION IS TO CORRECT THE PERIOD OF PERFORMANCE DATE ON MODIFICATION 36 |
| Jul 6, 2023 | P00036 | $130.0K | THE PURPOSE OF THIS MODIFICATION IS TO EXERCISE OPTION PERIOD III AND INCREMENTAL FUNDING |
| May 24, 2023 | P00035 | $20.0K | THE PURPOSE OF THIS MODIFICATION IS INCREMENTAL FUNDING |
| Jan 19, 2023 | P00034 | $100.0K | THE PURPOSE OF THIS MODIFICATION IS INCREMENTAL FUNDING |
| Dec 21, 2022 | P00033 | $100.0K | THE PURPOSE OF THIS MODIFICATION IS INCREMENTAL FUNDING |
| Nov 21, 2022 | P00032 | $14.6K | THE PURPOSE OF THIS MODIFICATION IS INCREMENTAL FUNDING |
| Nov 9, 2022 | P00031 | $40.0K | THE PURPOSE OF THIS MODIFICATION IS INCREMENTAL FUNDING |
| Nov 8, 2022 | P00030 | $-14.6K | THE PURPOSE OF THIS MODIFICATION IS DEOBLIGATING |
| Nov 2, 2022 | P00029 | $69.7K | THE PURPOSE OF THIS MODIFICATION IS ADD FUNDING |
| Sep 20, 2022 | P00028 | $70.0K | THE PURPOSE OF THIS MODIFICATION IS ADD FUNDING IN THE AMOUNT OF $70,000.00 |
| Aug 9, 2022 | P00027 | $50.0K | THE PURPOSE OF THIS MODIFICATION IS ADD FUNDING IN THE AMOUNT OF $50,000.00 |
| Jul 27, 2022 | P00026 | $20.0K | THE PURPOSE OF THIS MODIFICATION IS ADD FUNDING IN THE AMOUNT OF $20,000.00 |
| Jul 15, 2022 | P00025 | $170.0K | THE PURPOSE OF THIS MODIFICATION IS EXERCISE OPTION PERIOD II AND ADD FUNDING |
| Jul 7, 2022 | P00024 | $12.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING TO OPTION PERIOD I |
| Jun 29, 2022 | P00023 | $0 | THE PURPOSE OF THIS MODIFICATION IS TO SHIFT FUNDING FROM BASE TO OPTION PERIOD I |
| Jun 23, 2022 | P00022 | $122.4K | THE PURPOSE OF THIS MODIFICATION IS TO INCREASE THE CEILING FOR OPTION PERIOD I FOR TWO MONTHS (JULY AND AUGUST), OPTION PERIOD II - OPTION PERIOD III |
| May 20, 2022 | P00021 | $27.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Feb 14, 2022 | P00020 | $27.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Dec 9, 2021 | P00019 | $100.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Dec 7, 2021 | P00018 | $27.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Nov 17, 2021 | P00017 | $150.1K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Oct 7, 2021 | P00016 | $218.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Sep 2, 2021 | P00015 | $36.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Sep 1, 2021 | P00014 | $-36.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Aug 18, 2021 | P00013 | $70.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Aug 6, 2021 | P00012 | $40.0K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING AND EXERCISE OPTION PERIOD |
| Jul 21, 2021 | P00011 | $39.5K | THE PURPOSE OF THIS MODIFICATION IS TO ADD FUNDING |
| Jul 15, 2021 | P00010 | $0 | THE PURPOSE OF THIS MODIFICATION IS TO ADD GREENBOOK CLIN FOR OPTION PERION I - OPTION PERIOD IV |
| Jun 11, 2021 | P00009 | $-133.6K | DEOBLIGATION OF $133,627.97 |
| May 25, 2021 | P00008 | $50.0K | INCREMENTAL FUNDING IN THE AMOUNT OF $50,000.00 |
| May 4, 2021 | P00007 | $38.3K | INCREMENTAL FUNDING IN THE AMOUNT OF $38,342.00 |
| Mar 4, 2021 | P00006 | $30.0K | INCREMENTAL FUNDING IN THE AMOUNT OF $30,000.00 |
| Dec 31, 2020 | P00005 | $50.0K | INCREMENTAL FUNDING IN THE AMOUNT OF $50,000.00 |
| Dec 22, 2020 | P00004 | $50.0K | INCREMENTAL FUNDING IN THE AMOUNT OF $50,000.00 |
| Nov 9, 2020 | P00003 | $100.0K | ADD FUNDING AND THE 889 CLAUSE |
| Sep 28, 2020 | P00002 | $126.0K | INCREMENTAL FUNDING IN THE AMOUNT OF $45,000.00 |
| Sep 25, 2020 | P00001 | $45.0K | INCREMENTAL FUNDING IN THE AMOUNT OF $45,000.00 |
| Sep 1, 2020 | 0 | $100.0K | NEW AWARD MAINTENANCE AND ENHANCEMENTS OF THE AMERICAN METEOROLOGICAL SOCIETY/ENVIRONMENTAL PROTECTION AGENCY (AMS/EPA) REGULATORY MODEL (AERMOD) MODELING SYSTEM (APP-OAR-20-00008) |
Research next steps
- Confirm the ordering vehicle and your eligibility or a qualified teaming route.
- Review the award scope and buyer evidence before making a bid/no-bid decision.