AGR-WATE71-07 · Lesson 2 · 54 clock hours · practice
Operations Plan and Compliance Documentation
Objective. The student will produce a complete written operations plan for the assigned scenario that includes a process narrative, chemical feed and dosing calculations, a sampling and monitoring schedule aligned with permit requirements, daily log forms, and a regulatory compliance summary referencing applicable federal and state standards.
⚠ Pending professional review
This lesson, its worked examples and its practice questions has not yet been verified by a licensed professional in the field or by a certification or approval body. It is a study draft and may contain errors. Do not use it as instructions for work on a job site or on live equipment. Always follow your instructor, your supervising professional, and current official references and regulations.
VoTechWorks program approval and accreditation are still in progress. Credentials are issued only by the certifying bodies named in each program, after their own exams.
What an Operations Plan Is and Why It Matters
An operations plan is the written backbone of a water or wastewater facility. It tells operators exactly how the plant works, what to measure, how to treat the water, and what records to keep. Regulators—including your state primacy agency and the US Environmental Protection Agency (EPA)—expect a facility to operate according to its permit and to document that it does so. Without a complete, accurate operations plan, operators cannot demonstrate compliance, and the facility risks enforcement action. As you build toward your capstone defense, you will write this plan from scratch for your assigned scenario.
The Process Narrative
The process narrative is the heart of the operations plan. Write it in plain operator-level language: describe what each unit process does, what parameters you must watch, what the normal operating range for each parameter is, and what steps to take when a reading falls outside that range. For a drinking water plant, this might cover coagulation/flocculation, sedimentation, filtration, and disinfection. For a wastewater plant, it might cover screening, primary clarification, biological treatment, secondary clarification, and disinfection or nutrient removal.
Every major process unit must be supported by at least one state operator study manual reference or an EPA technical guidance document. This is not optional—it shows the reader that your procedures are grounded in accepted practice, not guesswork. Cite the document by name; do not fabricate section numbers.
Safety note: When describing chemical handling within the narrative, always include the required personal protective equipment (PPE) for each chemical—gloves, goggles, face shield, or chemical-resistant apron as appropriate. Reference the chemical's Safety Data Sheet (SDS). Before entering any confined space associated with a process unit (wet well, digester, valve vault), the plan must note that a confined space entry permit is required and that atmospheric testing for oxygen, combustible gases, and toxic gases must be completed. Lockout/tagout (LOTO) procedures must be referenced whenever operators perform maintenance on any pump, valve actuator, or electrical panel.
Chemical Feed and Dosing Calculations
Chemical feed calculations convert a desired treatment dose into practical pump or feeder settings. You need three pieces of information: the flow rate through the process, the target dose, and the concentration (purity) of the chemical you are using. The standard formula chain is:
1. Pounds per day (lb/day): `lb/day = Flow (MGD) × Dose (mg/L) × 8.34 lb/gal`
2. Liquid feed rate: Convert lb/day to mL/min using the chemical solution's density and concentration.
Always show every unit conversion step. A hidden conversion is an unverifiable calculation—and on a licensing exam or a regulatory inspection, unverifiable work counts for nothing. Have your instructor verify the math before you insert the worksheet into the plan.
Sampling and Monitoring Schedule
Your permit document (simulated for the capstone) lists every parameter you must measure, where you must measure it, and how often. Build a table with these columns: Parameter, Sampling Location, Minimum Frequency, Analytical Method Reference, Reporting Deadline, and Permit Limit or Action Level. Leave analytical method numbers general if you are not certain of the exact number—write "Standard Methods" or "EPA-approved method" rather than risk citing a wrong number.
Once the table is complete, cross-reference it against your regulatory compliance summary section line by line. Every permit condition must map to at least one operational control or procedure in the plan. If your permit requires a turbidity limit before disinfection, your plan must describe when turbidity is measured, what the limit is, and what the operator does if the limit is approached or exceeded.
Regulatory Compliance Summary
This section translates legal language into operational action. Identify the federal authority (for example, the Safe Drinking Water Act for water systems, or the Clean Water Act / National Pollutant Discharge Elimination System for wastewater), your state's implementing regulations, and the specific permit conditions that apply to your scenario. For each permit condition, write one or two sentences describing the operational control that ensures compliance. This section proves to any reviewer that the operator understands not just what to do but why it is legally required.
Daily Log Forms
Daily logs are legal records. Entries must be legible, in ink, and corrected by single strikethrough with initials—never use correction fluid. Log forms must capture, at minimum, treatment flows, chemical feed rates, process readings, equipment status, and any unusual events. State regulations often specify how long records must be retained (commonly three to five years, but check your state's rule). Design your blank form so that every permit-required parameter has a dedicated field.
Putting the Plan Together
Organize your plan with a title page, table of contents, and numbered sections. Use consistent units throughout. A reviewer should be able to open any section and understand it without reading the rest. Proofread for calculation errors, missing units, and broken cross-references before submission. The rubric awards points for technical accuracy, correct calculations with units shown, complete sampling coverage, and a compliance summary that maps every permit condition to an operational control. A score of 28 out of 40 (70 percent) is required to pass; students below that mark receive written corrective feedback and one revision opportunity within five school days.
Key terms10
Operations PlanA written document that describes how a water or wastewater facility functions, what parameters are monitored, how chemicals are applied, and how the facility meets its permit requirements.
Process NarrativeThe section of an operations plan that explains, in operator-level language, what each treatment unit does, its normal operating range, and corrective actions when parameters go out of range.
Chemical Feed RateThe quantity of chemical applied per unit of time, typically expressed as pounds per day for dry chemicals or milliliters per minute for liquid chemicals, calculated from flow rate, target dose, and chemical concentration.
Permit LimitA numeric or narrative standard set in an operating permit that the facility must not exceed; established under federal or state authority such as the Safe Drinking Water Act or the Clean Water Act.
Sampling and Monitoring ScheduleA table or plan specifying which parameters are measured, where samples are collected, how often, by what analytical method, and by what deadline, all tied to permit requirements.
Regulatory Compliance SummaryThe section of an operations plan that identifies applicable laws, regulations, and permit conditions and maps each condition to a specific operational control or procedure.
Lockout/Tagout (LOTO)A safety procedure that isolates and de-energizes equipment before maintenance, preventing unexpected startup that could injure workers; required under OSHA standards for control of hazardous energy.
Safety Data Sheet (SDS)A standardized document provided by a chemical manufacturer that describes a chemical's hazards, safe handling requirements, required PPE, and emergency response information.
Daily LogAn official facility record completed each shift or day that documents flows, chemical use, process readings, equipment status, and unusual events; entries are legal records and must be retained for the period specified by state regulation.
Primacy AgencyThe state agency authorized by EPA to implement and enforce federal drinking water or wastewater regulations within that state; the agency that issues operator licenses and facility permits.
Worked examples4
1. A surface water plant treats 2.50 MGD. The target chlorine dose is 2.0 mg/L. The sodium hypochlorite solution is 12.5% available chlorine by weight and has a density of 8.34 lb/gal (essentially the same as water for this problem—use the given density). Calculate the feed rate in pounds of available chlorine per day and in gallons per day of solution.
Step 1 – Find lb/day of chlorine needed: lb/day = Flow (MGD) × Dose (mg/L) × 8.34 lb/gal = 2.50 × 2.0 × 8.34 = 41.7 lb/day of available chlorine.
Step 2 – Convert solution concentration to a decimal: 12.5% = 0.125.
Step 3 – Find gallons per day of solution needed: gal/day = lb/day of chlorine ÷ (density of solution × concentration) = 41.7 lb/day ÷ (8.34 lb/gal × 0.125) = 41.7 ÷ 1.0425 = 40.0 gal/day of solution.
Step 4 – State the answer with units and check reasonableness: 41.7 lb/day of available chlorine; 40.0 gal/day of 12.5% sodium hypochlorite solution.
Answer: 41.7 lb/day of available chlorine; 40.0 gal/day of 12.5% sodium hypochlorite solution.
2. Convert the sodium hypochlorite feed rate from the previous example (40.0 gal/day) to mL/min for setting a liquid chemical metering pump.
Step 1 – Convert gallons per day to liters per day: 40.0 gal/day × 3.785 L/gal = 151.4 L/day.
Step 2 – Convert liters per day to mL per day: 151.4 L/day × 1,000 mL/L = 151,400 mL/day.
Step 3 – Convert mL per day to mL per minute: 151,400 mL/day ÷ 1,440 min/day = 105.1 mL/min.
Step 4 – State the answer: the metering pump should be set to deliver approximately 105 mL/min.
Answer: Approximately 105 mL/min.
3. A wastewater plant flows at 1.80 MGD. The operator wants to add alum (aluminum sulfate) for phosphorus removal at a dose of 15 mg/L. Dry alum is 100% purity (for simplicity). Calculate the alum feed rate in lb/day.
Step 1 – Apply the standard dose formula: lb/day = Flow (MGD) × Dose (mg/L) × 8.34 lb/gal.
Step 4 – Because purity is 100%, no correction factor is needed. State the answer: 225.2 lb/day of dry alum.
Answer: 225.2 lb/day of dry alum.
4. A scenario permit requires that turbidity be measured at the filter effluent no less than every 4 hours and must not exceed 1.0 NTU. During a shift, the 8:00 a.m. reading is 0.4 NTU and the noon reading is 1.3 NTU. (a) Is the noon reading a permit violation? (b) What is the next required measurement time?
Step 1 – Compare the noon reading to the permit limit: 1.3 NTU > 1.0 NTU. Yes, the noon reading exceeds the permit limit and is a potential violation.
Step 2 – Determine what the operations plan must require the operator to do: investigate the cause (backwash status, coagulant dose, filter run time), take corrective action, and document the event in the daily log immediately.
Step 3 – Calculate the next required measurement time: 4 hours after the noon reading = 4:00 p.m. However, most regulatory guidance also requires more frequent monitoring during a turbidity exceedance—follow the operations plan's out-of-range response procedure.
Step 4 – Note reporting obligation: the operations plan must specify whether same-day notification to the primacy agency is required for this type of exceedance; check the permit conditions and state regulation.
Answer: (a) Yes, 1.3 NTU exceeds the 1.0 NTU permit limit. (b) The next scheduled measurement is at 4:00 p.m., with more frequent checks required during the exceedance per the operations plan response procedure.
The math in this lesson2
Learners compute 41.7 lb/day chlorine from 2.50 MGD × 2.0 mg/L × 8.34, then solution gal/day.
In class: Write a process narrative (minimum three pages) that describes, in operator-level language, how each unit process in the scenario facility functions, what parameters operators must monitor, what normal operating ranges are, and what the operator should do if a parameter goes out of range; the narrative must reference at least one state or EPA technical guidance document per major process unit. · Complete a chemical feed calculation worksheet for at least two chemicals used in the scenario (for example, chlorine disinfection and pH adjustment, or coagulant and sludge conditioning chemical): given flow rate, target dose, and chemical purity, calculate feed rate in pounds per day and in mL/min for a liquid chemical metering pump, showing all unit conversions; verify calculations with the instructor before incorporating them into the plan. · Design a sampling and monitoring schedule table that lists each required parameter, sampling location, minimum sampling frequency, analytical method reference (standard method number or EPA method number, left general if uncertain), reporting deadline, and the permit limit or action level; cross-reference this table against the regulatory compliance summary section of the operations plan to confirm every permit condition is addressed. Materials: Word processor or technical writing software, engineering calculator, Chemical Feed Calculation Worksheet (instructor template), state operator study manual, EPA Guidance on Small Drinking Water System Compliance or comparable wastewater effluent guidelines, blank daily log form template, spreadsheet software for table construction, scenario permit document (simulated) Check: Instructor evaluates the draft operations plan using a 40-point rubric: process narrative is technically accurate and complete (10 pts), chemical feed calculations are correct with units shown (10 pts), sampling schedule covers all permit-required parameters at correct frequency (10 pts), regulatory compliance summary cites correct authorities and maps each permit condition to an operational control (10 pts). Pass mark: 28/40 (70%). Students below pass mark receive written corrective feedback and one opportunity to revise within five school days.
Practice check8
Answer each question, then check it. Nothing is recorded; this is your own practice.
Water Treatment Calculations
1. Which formula correctly calculates the pounds per day of a chemical needed to dose a water supply?
Water/Wastewater Operations
2. A process narrative in an operations plan must include which of the following for each unit process?
Safety
3. Before an operator performs maintenance on a pump, the operations plan must require that the operator follow which safety procedure?
Water Treatment Calculations
4. A liquid sodium hypochlorite solution is 10% available chlorine by weight and has a density of 8.34 lb/gal. A plant needs to feed 50 lb/day of available chlorine. How many gallons per day of solution are required?
Regulations and Permit Compliance
5. A sampling and monitoring schedule table in an operations plan should include which of the following columns?
Regulations and Permit Compliance
6. When an operator must correct an error on a paper daily log, the proper procedure is to:
Regulations and Permit Compliance
7. The regulatory compliance summary section of an operations plan is designed primarily to:
Safety
8. Before handling sodium hypochlorite solution at a water treatment plant, an operator should consult which document to determine the required personal protective equipment?
Record this lesson on my transcript.Sign in with your key and enrollment email to record lessons (enroll free if you have no key). This page stays open to read and practise.
A free tech program — complimentary, as our commitment to get America working. Help us build VoTechWorks. Tell us what works, what doesn’t, and what you want to learn.