PE Environmental study plan

Convert between ppm, mg/m3, and percent by volume at given temperature and pressure using the ideal gas law, including wet vs. dry and corrected-to-7%-O2 bases

Calculate uncontrolled and controlled particulate and gaseous emission rates from AP-42-style emission factors and mass-balance fuel/feed data

Compute combustion stoichiometry: theoretical air, excess air from stack O2/CO2, and flue-gas composition on a dry basis

Predict control-device performance by calculating collection efficiency, penetration, and overall efficiency for series/parallel arrangements of cyclones, ESPs, baghouses, and scrubbers

Estimate stack-tip and ground-level concentrations qualitatively from Gaussian plume assumptions, and identify when dispersion modeling versus monitoring is required

Interpret NAAQS, PSD increments, nonattainment classifications, and New Source Review applicability against a described facility

Distinguish NSPS, NESHAP/MACT, and Title V permitting obligations and identify which pollutants and units each applies to

Apply Stokes' law and settling-velocity relationships to size chambers and estimate particle removal cut points

Set up mass-balance and dilution equations for a mixing zone, converting between concentration, flow, and loading units (MGD, cfs, lb/day)

Compute BOD5, ultimate BOD, and NBOD, and apply k-rate corrections for temperature and reaction time

Construct a Streeter-Phelps dissolved-oxygen sag curve and locate the critical deficit point and distance downstream

Solve activated-sludge design problems for F/M ratio, MCRT/SRT, MLSS inventory, recycle ratio, and WAS flow

Size primary sedimentation tanks, clarifiers, and disinfection contact basins from hydraulic and solids loading rates, and evaluate CT disinfection credit

Match drinking-water contaminants to their MCL, treatment process, and monitoring/reporting requirement under the Safe Drinking Water Act

Compare NPDES effluent limits and TMDL wasteload allocations against calculated discharge loadings to determine compliance

Apply Darcy's law to compute groundwater flow rate, seepage velocity, and travel time from conductivity, gradient, porosity, and aquifer thickness

Evaluate stormwater and industrial runoff controls, including load reduction from best management practices

Explain the CERCLA/RCRA corrective-action framework and how it drives investigation and cleanup decisions at a release site

Design and critique a Phase I and Phase II ESA scope using ASTM-style practice, including records review, recognized environmental conditions, and sampling rationale

Compute a contaminant retardation factor from Kd, foc, bulk density, and porosity, and rank contaminants by mobility

Apply Henry's law and vapor-pressure data to decide among soil vapor extraction, air sparging, and multiphase extraction

Compare remediation technologies (pump-and-treat, SVE, ISCO, thermal, PRB, bioremediation, MNA) against contaminant type, hydrogeology, and cleanup timeframe

Delineate a LNAPL/DNAPL plume from boring and monitoring-well data and set an appropriate monitoring network

Classify waste as listed, characteristic, universal, or excluded under RCRA, and justify the determination against a waste description

Apply the TCLP and land-disposal restriction framework to determine whether a waste can be land-disposed as generated

Size landfill components: liner and leachate-generation volume, leachate collection, gas generation, and remaining capacity/tipping-life projection

Trace the hazardous-waste manifest lifecycle and identify generator, transporter, and TSDF responsibilities at each step

Evaluate recycling, composting, incineration, and waste-to-energy options on a mass-balance and cost basis

Calculate exposure dose from intake parameters (concentration, contact rate, frequency, duration, body weight) for ingestion, inhalation, and dermal pathways

Derive cancer risk from a slope factor and noncancer hazard quotient/hazard index from an RfD, then interpret the result against acceptable-risk ranges

Convert between occupational exposure limits (PEL, TLV, REL) and air concentrations, and apply time-weighted-average and excursion rules

Identify HAZWOPER, confined-space, LEL/UEL, and PPE requirements for a described field task and select the required protection level

Explain environmental liability, auditing, and management-system drivers (CERCLA liability, environmental management systems, pollution prevention) and how they shape compliance decisions

Take a full-length timed practice exam under exam conditions and score each domain separately

Rework every missed item to root cause and re-derive the governing equation or rule from memory

Drill the 40 highest-frequency equations and unit conversions across all five domains until recall is automatic

Build a personal final-week review sheet limited to recurring error patterns and the regulatory thresholds most often confused