CLASSIFIEDS
Test Yourself Answer Key
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Government Services Group - Utility Manager Government Services Group is seeking a full-time Utility Manager for the Florida Governmental Utility Authority (FGUA) at MacDill AFB with office location at the FGUA WWTP, 9119 Bayshore Blvd, MacDill AFB, Tampa, FL. Preliminary salary range is $80k to $95k, depending on qualifications. FGUA seeks an individual with excellent communication skills and 20 years' experience in utility management of water and wastewater utilities. Bachelor's Degree in civil engineering or equivalent is required, PE preferred. Salary, education, and experience requirements are adjustable for the right person. Applicant must hold a current, valid Florida Driver's License and be able to pass a Federal Government Background Security check. Interested candidates please email resume to gforrest@govmserv.com or call 407803-3478. Excellent benefits package including 401-k, dental and healthcare insurance. AA/EOE
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1. C) Community water systems (CWSs) and nontransient, noncommunity water systems (NTNCWSs) Per the U.S. EPA Comprehensive Disinfectants and Disinfection Byproducts Rules (Stage 1 and Stage 2): DBPR Quick Reference Guide, “The DBPRs apply to all sizes of community water systems (CWSs) and nontransient, noncommunity water systems (NTNCWSs) that add a disinfectant other than UV light or deliver disinfected water, and transient noncommunity water systems (TNCWSs) that add chlorine dioxide.”
2. A) locational RAA (LRAA) for each monitoring location in the distribution system. Per the DBPR Quick Reference Guide, for the Stage 2 DBPR, “MCL compliance is calculated using the locational RAA (LRAA) for each monitoring location in the distribution system.”
3. A) Bromate and chlorite Per the DBPR Quick Reference Guide, “Regulated Contaminants and Disinfectants,” in the table under Stage 1: “Total Trihalomethanes (TTHMs), five Haloacetic Acids (HAA5), Bromate, Chlorite.” Under Stage 2: “Total Trihalomethanes (TTHMs), five Haloacetic Acids (HAA5)”
4. D) 4.0
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Per FAC 62-550.310(2)(a) Primary Drinking Water Standards: Maximum Contaminant Levels and Maximum Residual Disinfectant Levels, “Maximum disinfectant levels are as follows (in table): Chlorine – 4.0 mg/L (as Cl2) Chloramines – 4.0 mg/L (as Cl2) Chlorine Dioxide – 0.8 mg/L (as ClO2).”
5. A) TTHM = 0.080 mg/L, HAA5 = 0.060 mg/L
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September 2019 • Florida Water Resources Journal
Per the DBPR Quick Reference Guide, Table 2. Regulated Contaminants and Disinfectants, “TTHM = 0.080 mg/L; HAA5 = 0.060 mg/L.”
6. C) Only systems that use chlorine dioxide for disinfection. Per the DBPR Quick Reference Guide, Table 4. Compliance with MCLs and MRDLs (Routine Monitoring), “Contaminant/Disinfectant – Chlorite, Coverage: Systems that use chlorine dioxide as a disinfectant, monitoring frequency daily (at entrance to the distribution system), monthly (in distribution system), and at total distribution system monitoring locations (one at entry point to the distribution system, three in the distribution system).”
7. C) Systems that use conventional filtration Per the DBPR Quick Reference Guide, Table 4. Compliance with MCLs and MRDLs (Routine Monitoring), “Contaminant/Disinfectant – DBP Precursors (TOC sample set), Coverage: Systems that use conventional filtration and monitoring frequency at the same location and frequency as the Total Coliform Rule.”
8. B) operational evaluation levels (OELs). Per the DBPR Quick Reference Guide, Table 5. Operational Evaluation Levels (OELs), “Applies to all systems subject to Stage 2 DBPR monitoring requirements that conduct compliance monitoring and collect samples quarterly.”
9. A) During any quarter in which the OEL is greater than the TTHM or the HAA5 MCL. Per the DBPR Quick Reference Guide, Table 5. Operational Evaluation Levels (OELs), “OELs are exceeded during any quarter in which the OEL is greater than the TTHM or HAA5 MCL.”
10. C) TOC. Per the DBPR Quick Reference Guide, Table 7. TOC Removal, “Subpart H systems that use conventional filtration treatment are required to remove specific percentages of organic materials, measured as TOC, that may react with disinfectants to form DBPs. Removal must be achieved through a treatment technique (enhanced coagulation or enhanced softening) unless a system meets alternative criteria. Systems practicing softening must meet TOC removal requirements for source water alkalinity greater than 120 mg/L CaC03.”