Chemical and radiological sample results

MS0240154 , Harrison Central High School

22 of the 53 analytes this system has been tested for have been detected at least once, across 250 samples on record.

The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 250 samples on record, detections range from November 4, 1993 to March 31, 2025. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for Harrison Central High School, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte	Kind	Detected in	First detected	Last detected
Lead 1030	Inorganic Chemical	106 of 166 results	Nov 4, 1993	Aug 14, 2023
Copper, Free 1022	Inorganic Chemical	89 of 166 results	Nov 4, 1993	Aug 14, 2023
TTHM 2950	Organic Chemical	11 of 11 results	May 24, 2004	Mar 31, 2025
Barium 1010	Inorganic Chemical	11 of 11 results	Sep 16, 2003	Feb 13, 2025
Fluoride 1025	Inorganic Chemical	11 of 11 results	Sep 16, 2003	Feb 13, 2025
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	9 of 10 results	Jul 26, 2004	Mar 31, 2025
Chromium 1020	Inorganic Chemical	7 of 11 results	Feb 2, 2004	Apr 26, 2022
Chloroform 2941	Organic Chemical	6 of 6 results	Aug 1, 2007	May 21, 2019
Bromodichloromethane 2943	Organic Chemical	5 of 6 results	Aug 1, 2007	May 21, 2019
Dichloroacetic Acid 2451	Organic Chemical	5 of 5 results	Sep 11, 2007	Aug 2, 2018
Trichloroacetic Acid 2452	Organic Chemical	3 of 5 results	Sep 11, 2007	Sep 15, 2014
Nitrite 1041	Inorganic Chemical	2 of 29 results	Jul 27, 2005	Feb 4, 2013
Dibromochloromethane 2944	Organic Chemical	2 of 6 results	Jun 10, 2010	Jul 18, 2012
Nickel 1036	Inorganic Chemical	2 of 11 results	Nov 12, 2009	May 10, 2010
Cadmium 1015	Inorganic Chemical	2 of 11 results	Mar 9, 2005	Feb 6, 2006
Selenium 1045	Inorganic Chemical	2 of 11 results	Mar 9, 2005	Feb 6, 2006
Sulfate 1055	Inorganic Chemical	2 of 2 results	Sep 16, 2003	Feb 2, 2004
Sodium 1052	Inorganic Chemical	1 of 1 result	Feb 24, 2021	Feb 24, 2021
Monochloroacetic Acid 2450	Organic Chemical	1 of 5 results	Aug 2, 2018	Aug 2, 2018
Dibromoacetic Acid 2454	Organic Chemical	1 of 5 results	Jul 18, 2012	Jul 18, 2012
Arsenic 1005	Inorganic Chemical	1 of 11 results	May 10, 2010	May 10, 2010
Cyanide 1024	Inorganic Chemical	1 of 11 results	Sep 15, 2003	Sep 15, 2003

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 21–30 of 250 samples, newest first — collected June 12, 2020 to February 9, 2023. The summary above covers all 250.

47 results from the 10 samples listed here: 8 detected, 39 not detected. Across the whole record it is 280 of 816. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for Harrison Central High School, every result from 21 to 30 of 250 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result	Analyte	Monitoring period
Collected Feb 9, 2023 12:00 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NI-230210-006 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 9, 2023 12:00, sampling point TF101	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 9, 2023 12:00, sampling point TF101	Nitrate 1040 EPA method QC10107041C	Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 9, 2023 12:00, sampling point TF101	Nitrite 1041 EPA method QC10107041C	Jan 1, 2023 – Dec 31, 2023
Collected May 24, 2022 13:00 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample VO-220525-014 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Dichloromethane 2964 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Benzene 2990 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Toluene 2991 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 24, 2022 13:00, sampling point TF101	Styrene 2996 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Collected Apr 26, 2022 11:15 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample IN-220427-119 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Arsenic 1005 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
0.0025 mg/l , sample collected Apr 26, 2022 11:15, sampling point TF101	Barium 1010 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Cadmium 1015 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
0.0005 mg/l , sample collected Apr 26, 2022 11:15, sampling point TF101	Chromium 1020 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
0.189 mg/l , sample collected Apr 26, 2022 11:15, sampling point TF101	Fluoride 1025 EPA method QC 10-109-12-2-A	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Mercury 1035 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Selenium 1045 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Antimony, Total 1074 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Beryllium, Total 1075 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 26, 2022 11:15, sampling point TF101	Thallium, Total 1085 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Collected Mar 14, 2022 14:00 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-220315-004 Laboratory MSDH Lab
4.59 ug/l , sample collected Mar 14, 2022 14:00, sampling point MRT000	TTHM 2950 EPA method 524.2	Jan 1, 2022 – Dec 31, 2022
Collected Mar 14, 2022 14:00 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-220315-004 Laboratory MSDH Lab
2.28 ug/l , sample collected Mar 14, 2022 14:00, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Jan 1, 2022 – Dec 31, 2022
Collected Feb 3, 2022 13:30 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NI-220204-003 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 3, 2022 13:30, sampling point TF101	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 3, 2022 13:30, sampling point TF101	Nitrate 1040 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 3, 2022 13:30, sampling point TF101	Nitrite 1041 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Collected May 12, 2021 14:00 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample CN-210513-001 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 12, 2021 14:00, sampling point TF101	Cyanide 1024 EPA method QC10204001X	Jan 1, 2020 – Dec 31, 2022
Collected Feb 24, 2021 13:00 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NA-210225-004 Laboratory MSDH Lab
64.6 mg/l , sample collected Feb 24, 2021 13:00, sampling point TF101	Sodium 1052 EPA method 200.7	Not recorded
Collected Feb 24, 2021 13:00 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NI-210225-001 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 24, 2021 13:00, sampling point TF101	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 24, 2021 13:00, sampling point TF101	Nitrate 1040 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 24, 2021 13:00, sampling point TF101	Nitrite 1041 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Collected Jun 12, 2020 09:50 Sampling point DS000 Distribution Sample type Routine Lab sample 200612-052PB Laboratory MSDH Lab
0.1216 mg/l , sample collected Jun 12, 2020 09:50, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020
0.0007 mg/l , sample collected Jun 12, 2020 09:50, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2018 – Dec 31, 2020

Collected
Feb 9, 2023 12:00

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NI-230210-006

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2023
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
May 24, 2022 13:00

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
VO-220525-014

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2022
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Apr 26, 2022 11:15

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
IN-220427-119

Laboratory
MSDH Lab
- Arsenic 1005 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Barium 1010 EPA method 200.8
  
  Result
  0.0025 mg/l
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Chromium 1020 EPA method 200.8
  
  Result
  0.0005 mg/l
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Fluoride 1025 EPA method QC 10-109-12-2-A
  
  Result
  0.189 mg/l
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Nickel 1036 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Selenium 1045 EPA method 200.8
  
  Result
  Not detected below 0.0025 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
Collected
Mar 14, 2022 14:00

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-220315-004

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2022
- TTHM 2950 EPA method 524.2
  
  Result
  4.59 ug/l
Collected
Mar 14, 2022 14:00

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-220315-004

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2022
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  2.28 ug/l
Collected
Feb 3, 2022 13:30

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NI-220204-003

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2022
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
May 12, 2021 14:00

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
CN-210513-001

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2020 – Dec 31, 2022
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Feb 24, 2021 13:00

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NA-210225-004

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  64.6 mg/l
Collected
Feb 24, 2021 13:00

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NI-210225-001

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Jun 12, 2020 09:50

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
200612-052PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2018 – Dec 31, 2020
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1216 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0007 mg/l

Routine (10).