Environmental Engineering Reference
In-Depth Information
11.3.6.1 Average Monthly Concentration
The average monthly concentration (AMC) is the average of the
results of all tests performed during the month:
∑
Test
+
Test
+
Test
+ +
…Test
1
2
3
n
(11.1)
AMC(mg/L)
=
n
(tes
ts during month)
11.3.6.2 Average Weekly Concentration
The average weekly concentration (AWC) is the average of the results
of all of the tests performed during a calendar week. A calendar week
must start on Sunday and end on Saturday and be completely within the
reporting month. A weekly average is not computed for any week that
does not meet these criteria.
∑
Test
+
Test
+
Test
+ +
…Test
1
2
3
n
(11.2)
AWC(mg/L)
=
n
(tes
ts during calendarweek)
11.3.6.3 Average Hourly Concentration
The average hourly concentration (AHC) is the average of all of the
test results collected during a 60-minute period:
∑
Test
+
Test
+
Test
+ +
…Test
1
2
3
n
(11.3)
AHC(mg/L)
=
n
(tes
ts during 60-minute period)
11.3.6.4 Daily Quantity
Daily quantity is the quantity of a pollutant in kilograms per day
discharged during a 24-hour period:
DailyQuantity(kg/day)
=
Concentration(mg/L
))Flow(MGD)
×
(11.4)
×
3.785 kg/mg/L/MG
11.3.6.5 Average Monthly Quantity
Average monthly quantity (AMQ) is the average of all the individual
daily quantities determined during the month:
∑
dq
+
dq
+
dq
+…+
dq
1
2
3
ingmonth)
n
(11.5)
AMQ(kg/day)
=
n
(testsdur
