CA Drinking Water Watch

CALIFORNIA STATE PRISON - SOLANO (4810800)

All Sampling Results From To

STG2-SIT...* (CA4810800_DST_802)

Click to hide / show columns: Analyte Number | Analyte Name | Sampling Date | Detected Level | Less Than | RL | Counting Error (+/-) | MCL | DLR | Unit | Lab Sample ID | Lab | ELAP | Method |

Some columns are not shown for clarity. Please use the above links to unhide them.

Tips on Using Table

Analyte Number Analyte Name Sampling Date Results Counting Error (+/-) MCL DLR Unit Lab Sample ID Lab ELAP Method
Detected Level Less Than RL
Analyte Number Analyte Name Sampling Date Detected Level Less Than RL Counting Error (+/-) MCL DLR Unit Lab Sample ID Lab ELAP Method
2950 TTHM 03-04-2024 42.35 1 80 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 03-04-2024 6.67 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 03-04-2024 9.72 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 03-04-2024 1.89 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 03-04-2024 24.07 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 03-04-2024 15.0 1 60 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 03-04-2024 3.3 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 03-04-2024 < 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 03-04-2024 11.7 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 03-04-2024 < 1 1 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 03-04-2024 < 2 2 UG/L 24C1465-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 11-27-2023 14.47 1 80 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 11-27-2023 1.16 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 11-27-2023 2.81 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 11-27-2023 < 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 11-27-2023 10.50 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 11-27-2023 5.4 1 60 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 11-27-2023 < 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 11-27-2023 < 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 11-27-2023 3.9 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 11-27-2023 1.5 1 1 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 11-27-2023 < 2 2 UG/L 23K3905-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 07-03-2023 < 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 07-03-2023 5.8 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 07-03-2023 6.9 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 07-03-2023 < 2 2 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 07-03-2023 25.64 1 80 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 07-03-2023 1.18 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 07-03-2023 4.85 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 07-03-2023 < 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 07-03-2023 19.61 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 07-03-2023 12.7 1 60 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 07-03-2023 < 1 1 UG/L 23G0431-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 06-19-2023 41.80 1 80 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 06-19-2023 2.20 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 06-19-2023 7.72 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 06-19-2023 < 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 06-19-2023 31.88 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 06-19-2023 10.8 1 60 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 06-19-2023 < 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 06-19-2023 < 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 06-19-2023 7.0 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 06-19-2023 3.8 1 1 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 06-19-2023 < 2 2 UG/L 23F3422-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 02-27-2023 32.52 1 80 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 02-27-2023 4.52 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 02-27-2023 7.57 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 02-27-2023 < 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 02-27-2023 20.43 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 02-27-2023 8.2 1 60 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 02-27-2023 1.7 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 02-27-2023 < 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 02-27-2023 6.5 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 02-27-2023 < 1 1 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 02-27-2023 < 2 2 UG/L 23C0023-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 12-20-2022 9.50 1 80 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 12-20-2022 2.11 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 12-20-2022 2.39 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 12-20-2022 < 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 12-20-2022 5.00 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 12-20-2022 4.6 1 60 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 12-20-2022 < 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 12-20-2022 < 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 12-20-2022 1.4 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 12-20-2022 3.2 1 1 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 12-20-2022 < 2 2 UG/L 22L3424-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 09-12-2022 62.94 1 80 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 09-12-2022 < 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 09-12-2022 10.25 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 09-12-2022 < 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 09-12-2022 52.69 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 09-12-2022 39.6 1 60 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 09-12-2022 < 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 09-12-2022 < 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 09-12-2022 15.5 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 09-12-2022 24.1 1 1 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 09-12-2022 < 2 2 UG/L 22I1974-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 04-18-2022 29.98 1 80 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 04-18-2022 4.22 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 04-18-2022 6.29 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 04-18-2022 1.30 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 04-18-2022 18.17 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 04-18-2022 19.0 1 60 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 04-18-2022 1.6 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 04-18-2022 < 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 04-18-2022 6.6 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 04-18-2022 10.8 1 1 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 04-18-2022 < 2 2 UG/L 22D3089-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 01-19-2022 97.69 1 80 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 01-19-2022 6.77 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 01-19-2022 21.88 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 01-19-2022 < 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 01-19-2022 69.04 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 01-19-2022 84.0 1 60 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 01-19-2022 3.7 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 01-19-2022 < 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 01-19-2022 42.6 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 01-19-2022 37.7 1 1 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 01-19-2022 < 2 2 UG/L 22A2542-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2943 BROMODICHLOROMETHANE 11-15-2021 11.12 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 11-15-2021 < 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 11-15-2021 22.42 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 11-15-2021 32.9 1 60 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 11-15-2021 < 2 2 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 11-15-2021 1.3 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 11-15-2021 < 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 11-15-2021 15.5 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 11-15-2021 16.1 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2950 TTHM 11-15-2021 38.08 1 80 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 11-15-2021 4.54 1 1 UG/L 21K2892-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2950 TTHM 08-04-2021 72.13 1 80 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2944 DIBROMOCHLOROMETHANE 08-04-2021 9.90 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2943 BROMODICHLOROMETHANE 08-04-2021 16.83 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2942 BROMOFORM 08-04-2021 1.97 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2941 CHLOROFORM 08-04-2021 43.43 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 524.2
2456 TOTAL HALOACETIC ACIDS (HAA5) 08-04-2021 20.4 1 60 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2454 DIBROMOACETIC ACID 08-04-2021 2.0 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2453 MONOBROMOACETIC ACID 08-04-2021 < 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2452 TRICHLOROACETIC ACID 08-04-2021 10.4 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2451 DICHLOROACETIC ACID 08-04-2021 8.0 1 1 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2
2450 MONOCHLOROACETIC ACID 08-04-2021 < 2 2 UG/L 21H0818-02 ALPHA ANALYTICAL LABORATORIES UKIAH 1551 EPA 552.2

*Please refer to the Stage 2 DBP Monitoring Plan Approval Letter for full sample point names.
RL – Reporting Level means the level to which the laboratory reported the presence of an analyte. For radionuclides, Reporting Level is the MDA95.

DLR – Detection Limit for purposes of Reporting (DLR) means the designated minimum level at or above which any analytical finding of a contaminant in drinking water resulting from monitoring required under Chapter 15 of Title 22 shall be reported to the State Board (California Code of Regulations Section § 64400.34)

For addtional definitions, please refer to our data dictionary.