3. Compliance with MCL well #1 0.8 3.8 2.1 0.9 determined by running annual average of all Report in the the Average = 1.9 AND Range = 0.8 - 3.8 samples taken from one sampling point. Example of XYZ System’s table: Range of Contaminants Average MCL MCLG Violation Possible Sources detects Runoff from herbicide used Atrazine (ppb) 1.9 0.8 3.8 3 3 No – on row crops. 4. Compliance with MCL determined by a running annual average of all samples at all sampling points XYZ System has multiple sampling sites with multiple sampling dates (TTHM example). Q2 Q3 Q4 Q1 Q2 Q3 Q4 TTHMs 2015 2015 2015 2016 2016 2016 2016 site #1 - - - 45 60 125 70 site #2 - - - 40 55 115 60 site #3 - - - 45 60 105 70 site #4 - - - 50 65 135 80 Quarterly Average 55 125 65 45 60 120 70 Running Annual - - - 73 74 73 74 Average Report in the table the Highest Annual Average = 74 AND Range = 40 -135
well #1 0.8 3.8 2.1 0.9 Report in the the Average = 1.9 AND Range = 0.8 - 3.8 3. Compliance with MCL determined by running annual average of all samples taken from one sampling point. Example of XYZ System’s table: Contaminants Average Range of detects MCL MCLG Violation Possible Sources Atrazine (ppb) 1.9 0.8 – 3.8 3 3 No Runoff from herbicide used on row crops. 4. Compliance with MCL determined by a running annual average of all samples at all sampling points XYZ System has multiple sampling sites with multiple sampling dates (TTHM example). TTHMs Q2 2015 Q3 2015 Q4 2015 Q1 2016 Q2 2016 Q3 2016 Q4 2016 site #1 - - - 45 60 125 70 site #2 - - - 40 55 115 60 site #3 - - - 45 60 105 70 site #4 - - - 50 65 135 80 Quarterly Average 55 125 65 45 60 120 70 Running Annual Average - - - 73 74 73 74 Report in the table the Highest Annual Average = 74 AND Range = 40 -135
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