AL Well Driller common mistakes
AL Well Driller · Understand the traps and how to avoid them.
Treating Alabama's casing, grouting, and sealing rules as generic industry practice instead of citing the state-specific minimums (casing depth below land surface, annular seal thickness and depth, grout placement method) when a question asks what is required.
Candidates study national drilling manuals and assume state rules mirror them, then answer with 'best practice' values that are close but not the Alabama minimums the exam is testing.
What to do instead
Build a one-page reference of the ADEM well construction minimums (casing depth, seal depth, grout type and placement) and quiz yourself until you can state each number and the reason behind it without looking.
Confusing the permitting sequence: who applies, which form, what must be submitted before drilling starts, and which changes require a permit modification versus a new permit.
Permitting is memorization-heavy and candidates lump 'get a permit' into one step without learning the triggers for amendment, transfer, or re-application.
What to do instead
Write the permit lifecycle as a numbered timeline from application through well completion reporting, and for each stage list the triggering event and the responsible party.
Placing grout by dumping from the top of the annulus or tremie above the grout surface instead of using a positive-displacement method from the bottom up.
Field habits and speed pressure lead to top-down placement, and candidates who have seen it done that way assume it is acceptable on the exam.
What to do instead
Memorize the rule that the grout discharge must stay submerged in the rising grout column, and practice explaining why top-down placement leaves voids and bridging.
Mixing up casing types and their intended uses (steel versus PVC versus continuous-wall versus screen) and selecting a casing material that fails the structural or water-quality requirement in the scenario.
Candidates memorize material lists without linking each to collapse strength, corrosion resistance, and the specific aquifer or contaminant condition described.
What to do instead
For each casing material, write three bullets: where it is appropriate, where it fails, and the code or standard that governs it; then answer scenario questions by matching the constraint first.
Answering pump and equipment sizing questions by picking the largest or smallest number rather than calculating from well yield, total dynamic head, and drawdown.
Candidates avoid the arithmetic under time pressure and default to intuition, missing questions that hinge on a simple head or yield comparison.
What to do instead
Drill a fixed calculation routine: determine required yield, compute total dynamic head from static level plus drawdown plus lift plus friction, then select the pump setting below the anticipated pumping level.
Treating drawdown, specific capacity, and aquifer transmissivity as interchangeable terms in groundwater questions.
The concepts are related and the definitions blur under exam pressure, so candidates pick a plausible-sounding term instead of the one the question defines.
What to do instead
Write a definition card for each term with its units and one worked example, and practice distinguishing 'what happens during pumping' from 'what the aquifer property is.'
Ignoring the well development and disinfection steps in the completion sequence, or placing them in the wrong order relative to grouting and pump installation.
Candidates focus on drilling and casing and treat development and disinfection as afterthoughts, so sequence questions catch them out.
What to do instead
Memorize the completion sequence as a single ordered list from drilling through development, disinfection, testing, and reporting, and rehearse it until the order is automatic.
Misreading water quality questions by confusing primary and secondary drinking water standards or applying a standard to the wrong parameter.
Both sets of limits are memorized as numbers without the category distinction, so candidates match a number to the wrong contaminant or the wrong regulatory tier.
What to do instead
Separate primary (health-based) and secondary (aesthetic) standards into two lists, and for each parameter note the standard, the category, and a common Alabama groundwater context such as iron, manganese, or nitrate.
Skipping the abandonment and sealing requirements, assuming they only apply to dry holes rather than to every well taken out of service.
Abandonment is a small part of the manual and candidates deprioritize it, but the exam tests sealing methods, materials, and notification requirements directly.
What to do instead
Create a dedicated abandonment checklist covering when sealing is required, approved sealing materials, placement method, and reporting, and review it as its own topic rather than as a footnote.
Guessing on questions about Alabama-specific reporting and recordkeeping (well logs, completion reports, who receives them, and retention) instead of knowing the requirement.
Candidates assume reporting is administrative busywork and never commit the specifics to memory, then lose easy points.
What to do instead
List every required record, its recipient, and its deadline in a table, and self-test by covering the answers and reciting the table from memory.