| EP ID | Entry point name | Water type |
Availability | Frequency | Schedule begin |
Schedule end |
First quarter or First sample |
Second quarter or Second sample |
Third quarter |
Fourth quarter |
|---|---|---|---|---|---|---|---|---|---|---|
| EP-A | EP FOR ROCK CREEK | SW | Permanent | 4 quarters | 1/1/2023 | 9/3/2025 | 12/15/2025 | |||
| For each active entry point served by surface water, collect 4 consecutive quarters of samples within a 12-month period with samples collected 2 to 4 months apart. |
||||||||||
| For compliance? | EP ID | Entry point name | Sample date | # Detections | # MCL exceedances |
Sample ID |
|---|---|---|---|---|---|---|
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 0 | 0 | 2509059-01 |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 0 | 0 | 170-2632-1 |
| For compliance? | EP ID |
Entry point name | Sample date | Received date | Analyte code |
Analyte abbreviation |
Analyte name |
Result (ng/L) |
MCL (ng/L) |
MRL (ng/L) |
Sample ID | Lab ID | Lab name | Analysis method | Method name | TINWSF ISN |
TSASAMPL ISN |
TSASAR ISN |
SelectDataSet | SelectAnalyte | SelectDetects | SelectLabID | SelectLabName | SelectMethod | SelectMethodName |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2813 | 11Cl-PF3OUdS | 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017032 | Yes | 2813 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2814 | 9Cl-PF3ONS | 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017031 | Yes | 2814 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2815 | ADONA | 4,8-Dioxa-3H-perfluorononanoic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017030 | Yes | 2815 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2816 | HFPO-DA | Hexafluoropropylene oxide dimer acid | ND | 10 | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017029 | Yes | 2816M | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2801 | PFBS | Perfluorobutanesulfonic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017042 | Yes | 2801M | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2807 | PFDA | Perfluorodecanoic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017036 | Yes | 2807 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2808 | PFDoA | Perfluorododecanoic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017035 | Yes | 2808 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2802 | PFHpA | Perfluoroheptanoic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017041 | Yes | 2802 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2809 | PFHxA | Perfluorohexanoic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017034 | Yes | 2809 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2803 | PFHxS | Perfluorohexanesulfonic acid | ND | 10 | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017040 | Yes | 2803M | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2804 | PFNA | Perfluorononanoic acid | ND | 10 | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017039 | Yes | 2804M | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2806 | PFOA | Perfluorooctanoic acid | ND | 4.0 | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017037 | Yes | 2806M | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2805 | PFOS | Perfluorooctanesulfonic acid | ND | 4.0 | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017038 | Yes | 2805M | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 12/15/2025 | 12/29/2025 | 2812 | PFUnA | Perfluoroundecanoic acid | ND | 2.00 | 170-2632-1 | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | 12282 | 3032481 | 4017033 | Yes | 2812 | N | 4034 | EUROFINS EATON ANALYTICAL | EPA 537.1 | PFAS SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2813 | 11Cl-PF3OUdS | 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000121 | Yes | 2813 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2821 | 4:2FTS | 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000073 | Yes | 2821 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2820 | 6:2FTS | 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000081 | Yes | 2820 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2822 | 8:2FTS | 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000065 | Yes | 2822 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2814 | 9Cl-PF3ONS | 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000113 | Yes | 2814 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2815 | ADONA | 4,8-Dioxa-3H-perfluorononanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000105 | Yes | 2815 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2816 | HFPO-DA | Hexafluoropropylene oxide dimer acid | ND | 10 | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000097 | Yes | 2816M | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2827 | NFDHA | Nonafluoro-3,6-dioxaheptanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000025 | Yes | 2827 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2819 | PFBA | Perfluorobutanoic acid | ND | 5.03 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000089 | Yes | 2819 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2801 | PFBS | Perfluorobutanesulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000201 | Yes | 2801M | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2807 | PFDA | Perfluorodecanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000153 | Yes | 2807 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2808 | PFDoA | Perfluorododecanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000145 | Yes | 2808 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2826 | PFEESA | Perfluoro(2-ethoxyethane)sulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000033 | Yes | 2826 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2802 | PFHpA | Perfluoroheptanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000193 | Yes | 2802 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2829 | PFHpS | Perfluoroheptanesulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000009 | Yes | 2829 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2809 | PFHxA | Perfluorohexanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000137 | Yes | 2809 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2803 | PFHxS | Perfluorohexanesulfonic acid | ND | 10 | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000185 | Yes | 2803M | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2825 | PFMBA | Perfluoro-4-methoxybutanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000041 | Yes | 2825 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2823 | PFMPA | Perfluoro-3-methoxypropanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000057 | Yes | 2823 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2804 | PFNA | Perfluorononanoic acid | ND | 10 | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000177 | Yes | 2804M | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2806 | PFOA | Perfluorooctanoic acid | ND | 4.0 | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000161 | Yes | 2806M | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2805 | PFOS | Perfluorooctanesulfonic acid | ND | 4.0 | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000169 | Yes | 2805M | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2824 | PFPeA | Perfluoropentanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000049 | Yes | 2824 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2828 | PFPeS | Perfluoropentanesulfonic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000017 | Yes | 2828 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | |
| Yes | EP-A | EP FOR ROCK CREEK | 09/03/2025 | 12/05/2025 | 2812 | PFUnA | Perfluoroundecanoic acid | ND | 2.01 | 2509059-01 | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS | 12282 | 3023370 | 4000129 | Yes | 2812 | N | 18 | DEQ LABORATORY DIVISION | 533 | PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS |