November 5, 2026
Safety Focus
Part 4 of 4: PPE Fundamentals
PPE only works if it is there, it fits, and the crew wears it. That takes a standard, not a reminder.
Who pays. On construction work, 1926.95(d)(1) says the PPE used to comply "shall be provided by the employer at no cost to employees," with listed exceptions. The main ones: the employer does not have to pay for non-specialty safety-toe boots or non-specialty prescription safety glasses if the worker may wear them off the job site, or for everyday clothing and weather gear. The employer pays for replacements unless the worker lost or deliberately damaged the gear.
Build the standard around the job:
• Walk each new site before setup and name the PPE for each task, as on Tuesday.
• Stock the truck: spare glasses, face shields, the right gloves, and hearing protection, so "I didn't have one" is never the answer.
• Fit new hires on day one, and refit when gear changes.
• Inspect at the start of every shift and pull damaged gear.
• Know where the eyewash is before anyone mixes grout. On construction work, where eyes or body may be exposed to injurious corrosive materials, 1926.50(g) requires suitable facilities for quick drenching or flushing "within the work area for immediate emergency use."
Then enforce it the same way every time. And lead by example.
These steps are crew practice built on the OSHA rules cited this week, not a complete OSHA program. Your company's written safety program and any state plan rules decide the details.
Tomorrow's Health Focus turns to what happens when something gets past the glasses.
Key Takeaways:
• On construction work, employers provide required PPE at no cost, with listed exceptions (1926.95(d)).
• Stock spares on the truck and fit new hires on day one.
• Where corrosive materials can reach the eyes, eyewash or flushing must be in the work area (1926.50(g)).
Sources:
Knowledge Share
Part 4 of 4: Slot Selection and Open Area
In a naturally developed well, the slot is critical and a miss in either direction can hurt.
Too big. The slot passes more than the fines that development is meant to remove. The well keeps making sand. Sand wears the pump, fills the well bottom, and can leave voids in the formation behind the screen. A slot that is too big for the formation is hard to fix once it is in the hole.
Too small. The slot holds back grains that should have come out during development, so the coarse, high-permeability zone around the screen never fully forms. The well works harder for the same water, and that loss of efficiency shows up as extra drawdown and a higher power bill every year the well runs.
A100-20 gives you the test that tells you whether you got it right. Under Section 4.8.2, development continues until:
• Sand content averages no more than 5 mg/L over a complete 2-hour pumping cycle at the design discharge, measured at least 10 times.
• Specific capacity stops increasing significantly.
Those two numbers are the scorecard for the slot. Too big, and the sand limit is hard to meet. Too small, and specific capacity stalls below what the formation could give.
This is the newsletter's position in one line: efficiency, longevity, and durability come from matching the slot to the formation and developing the well until the numbers say it is done, not from maximizing open area.
These are the risks of a mis-sized slot, not guaranteed outcomes. Development method, formation, and pumping rate all play in.
Next week, the filter pack: how to choose it and how to place it.
What this means for your operation:
• Size the slot from the curve and A100's retention rules, not by habit.
• Develop until sand content and specific capacity both meet the mark.
• Record sand content and specific capacity on the completion report; they show whether the slot was right.
Sources:
• AWWA: ANSI/AWWA A100-20, Water Wells
Recommended Print References:
• Hydraulics of Wells: American Society of Civil Engineers
• Handbook of Ground Water Development- Roscoe Moss Company
• Groundwater & Wells, Third Edition- Edited by Robert J. Sterrett, Johnson Screens
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