Module 7 Runoff and EMC Values Quiz

How is the Event Mean Concentration (EMC) defined?

Total pollutant load for a storm event divided by the total runoff volume for that event

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The peak pollutant concentration measured during a storm event

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The arithmetic mean of pollutant concentrations sampled at equal time intervals

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The median pollutant concentration across all sampled storm events in a year

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According to the module, what is the generally recommended minimum number of storm events needed to determine a representative annual EMC through field monitoring?

7 to 10 events

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3 to 5 events

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12 to 15 events

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20 to 25 events

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Why should NPDES data NOT be used as a substitute for annual average EMC values?

NPDES data typically reflects a specific event rather than an annual average

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NPDES data is collected only during dry-weather flow conditions

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NPDES data is not publicly available for use in permit applications

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NPDES data is only applicable to industrial discharge sites

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In which document and table are the current regulatory EMC values for Florida permit applications published?

Table 9.2 of the Applicant’s Handbook, Vol. 1 (FDEP, 2024)

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Table 5.1 of the Florida Stormwater Management Manual (FDEP, 2020)

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Appendix B of the NPDES Stormwater Permit Guidance Document

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Table 9.2 of the Florida Water Quality Standards (Chapter 62-302, F.A.C.)

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What is the primary characteristic that distinguishes low-intensity commercial land use from high-intensity commercial land use?

Traffic volume

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Building height and floor area ratio

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The proportion of impervious surface coverage

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Proximity to residential zones

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How do total nitrogen EMC values for agricultural and urban areas typically compare to average natural area EMC values?

Up to three times greater than average natural area EMCs

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Up to ten times greater than average natural area EMCs

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Approximately equal to average natural area EMCs

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Up to five times greater than average natural area EMCs

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According to the module, how do total phosphorus EMC values for agricultural and urban areas typically compare to average natural area EMC values?

Up to 10 times greater than average natural area EMCs

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Up to 3 times greater than average natural area EMCs

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Up to 5 times greater than average natural area EMCs

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Approximately equal to average natural area EMCs

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How many major natural community types were sampled in the Natural Area Monitoring Project, and approximately what percentage of upland land cover in Florida did they represent?

Nine community types representing more than 92% of upland land cover

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Six community types representing more than 80% of upland land cover

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Twelve community types representing more than 75% of upland land cover

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Nine community types representing more than 70% of upland land cover

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In the practical highway TN EMC sampling example described in the module, what was the resulting highway TN EMC value, and how did it compare to the Applicant’s Handbook Table 9.2 value?

1.24 mg/L, closely matching the Applicant’s Handbook value of 1.25 mg/L

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1.50 mg/L, which was higher than the Applicant’s Handbook value of 1.25 mg/L

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1.24 mg/L, which was significantly higher than the Applicant’s Handbook value of 1.00 mg/L

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0.98 mg/L, which was lower than the Applicant’s Handbook value of 1.25 mg/L

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When was the Florida Cooperative Land Cover Map first released, and what was the version number of its most recent update mentioned in the module?

First released in 2010; updated to Version 3.5 in November 2021

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First released in 2004; updated to Version 2.0 in 2015

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First released in 2007; updated to Version 3.0 in 2018

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First released in 2010; updated to Version 4.0 in 2023

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Module 7 Runoff and EMC Values Quiz

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