SLNC Registration study materials
SLNC Registration study resources

SLNC Registration study plan

SLNC Registration · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Standards, Codes, and Regulations

  • Map the full regulatory hierarchy that governs septic/onsite wastewater system siting and design in your jurisdiction, from statute down to local health-department rule, and note where each layer adds requirements.

  • Build a one-page crosswalk of setback distances, vertical separation to limiting zone, and soil-treatment-area sizing rules, citing the specific code section for each number.

  • Define the permit pathway step by step (site evaluation, design submittal, construction permit, final approval) and identify which agency issues each approval.

  • List the ten code violations most commonly cited in your area and write the corrective action for each.

Your checkpoint

A two-page code crosswalk table with at least 25 cited requirements (setbacks, separation distances, sizing, permitting) and the exact section number for each.

Week 2

Standards, Codes, and Regulations & Site Assessment and Planning

  • Interpret soil profile descriptions (texture, structure, consistence, redoximorphic features) and translate them into a determination of limiting zone depth.

  • Calculate soil loading rates from texture class and structure using the governing table, showing your work for at least five soil scenarios.

  • Sketch a site plan for a hypothetical lot that layers topography, slope class, drainage patterns, water table indicators, wells, and property lines.

  • Explain how slope, floodplain, and proximity to surface water each independently constrain system layout.

Your checkpoint

Five worked loading-rate calculations with soil descriptions and a labeled site-plan sketch showing all constraint layers.

Week 3

Site Assessment and Planning

  • Perform a mock site evaluation on a real or photographed parcel, recording soil borings, depth to limiting zone, and slope readings in a field notebook format.

  • Determine a preliminary system type (conventional, alternative, or advanced treatment) from site constraints and justify the choice in writing.

  • Identify the reserve area requirement and demonstrate that the proposed layout satisfies it.

  • Draft a list of questions you would ask the regulator before design begins for a site with a shallow limiting zone.

Your checkpoint

A completed mock site assessment report (minimum 500 words) with boring log data, a constraint map, and a recommended system type with justification.

Week 4

Design and Specification

  • Size a treatment tank, distribution network, and soil treatment area for a three-bedroom dwelling, showing each calculation step and the code basis.

  • Compare gravity, pressure distribution, and drip dispersal and state the site conditions that favor each.

  • Select materials and components (pipe, fittings, risers, effluent filters, pumps) against the applicable standard and write a short specification for each.

  • Produce a design drawing set with plan view, section, and profile showing elevations and slopes.

Your checkpoint

A complete design package for one dwelling: calculations, component specifications, and a three-sheet drawing set.

Week 5

Design and Specification & Installation and Construction Practices

  • Write an installation sequence from excavation through final backfill, noting the inspection hold points at each stage.

  • Identify the construction practices that most often cause failures (compaction of infiltrative surfaces, smearing, improper bedding, inadequate slope) and state the prevention measure for each.

  • Explain safety requirements for excavation, confined-space entry into tanks, and equipment operation on site.

  • Draft a pre-construction checklist a contractor would use before breaking ground.

Your checkpoint

A staged installation checklist with at least eight inspection hold points and a parallel list of failure modes with prevention measures.

Week 6

Installation and Construction Practices & Inspection, Testing, and Verification

  • Describe the tests performed at each inspection stage (soil verification, tank water test, distribution lateral verification, final grading) and the pass criteria for each.

  • Explain how to conduct and document a hydraulic load test and a dosing verification.

  • Identify signs of poor workmanship visible during a final inspection and how to record them objectively.

  • Outline the steps for commissioning a system and training the owner.

Your checkpoint

An inspection and testing protocol document covering at least six tests, each with procedure, acceptance criteria, and the record to be retained.

Week 7

Inspection, Testing, and Verification & Documentation, Reporting, and Ethics

  • Assemble a complete project file: application, site evaluation, design, permits, inspection records, as-builts, and operation and maintenance information.

  • Write an inspection report that separates observed facts from professional opinion and states limitations clearly.

  • Analyze three ethical scenarios (pressure to approve deficient work, undisclosed site limitations, conflicts of interest) and state the correct course of action with reference to professional obligations.

  • Explain record retention and confidentiality expectations for site and client data.

Your checkpoint

A full sample project file with a written inspection report and a one-page ethics position statement on at least three scenarios.

Week 8

Standards, Codes, and Regulations & Site Assessment and Planning & Design and Specification & Installation and Construction Practices & Inspection, Testing, and Verification & Documentation, Reporting, and Ethics

  • Complete two timed practice exams and score each domain separately to identify remaining weak areas.

  • Re-review the code crosswalk and loading-rate calculations, correcting any errors found in practice.

  • Recite from memory the key numeric thresholds (setbacks, separation distances, loading rates) without reference.

  • Write a one-page personal summary of the five concepts you are most likely to confuse on exam day and the distinction for each.

Your checkpoint

Two scored practice exams with a domain-by-domain error log and a final one-page concept-distinction summary.

Milestones

Week 2: Can state the governing code section for any setback or separation distance asked, and complete a loading-rate calculation from a soil description without notes.

Week 4: Produce a full design package for a single dwelling in under three hours with calculations that reconcile to the code tables.

Week 6: Explain every inspection hold point and its pass criteria, and identify at least five visible workmanship defects from a description alone.

Week 8: Score at least 80 percent on both timed practice exams with no domain below 70 percent.