One Wooden Board, One Bucket, Fifty PPM

What went wrong. The board was never washed. A damp wipe with a sanitizer solution does not remove raw poultry juices, fat, or protein - and chlorine is rapidly inactivated by organic load. At 50 ppm, the solution is half the required strength of 100 ppm before the chicken residue hits it, so it was doing almost nothing. The result is raw chicken contamination transferred directly onto a ready-to-eat food that receives no kill step. The likely hazards are Salmonella, Campylobacter, and potentially Listeria from the poultry.

What happens to the food. The six plated salads are discarded. Romaine cannot be made safe by rinsing it afterwards - the bacteria are on and in the leaf surfaces, and the salad is served raw. The remaining romaine on the board, and any lettuce that contacted the board or knife, is discarded for the same reason. Damaged romaine should not be repurposed into a cooked dish either; that decision invites an argument you cannot win.

The other failures in the sequence.

• One board and one knife used for raw poultry and ready-to-eat food. Colour-coded boards and a dedicated RTE board are the only practical control.
• The scored wooden board cannot be adequately cleaned and sanitized; scoring holds residue and moisture. It needs replacing with a smooth, non-absorbent, easily cleanable board.
• The cloth carried raw chicken juice from the board back into the bucket, contaminating the whole solution.
• The bucket was never tested or remade, and the sanitizer sat for hours at the wrong strength.
• The seasonings, the knife handle, and the counter were never addressed - cross-contamination is usually a trail, not a single item.

The sequence matters more than the products.

1. Scrape and pre-clean. Remove food debris into the garbage. Sanitizer cannot penetrate soil.
2. Wash in the first compartment with hot water and detergent, using a brush or scouring pad to reach knife-to-board joints and both sides of the board. Water temperature should follow the detergent label; hot water in the range of 45°C and above is typical.
3. Rinse off detergent and loosened soil - detergent residue neutralizes chlorine.
4. Sanitize in the second compartment by full immersion in 100 ppm available chlorine (or 200 ppm quaternary ammonium, or 25 ppm iodine, per the product label). Allow the full contact time stated on the label - commonly 2 minutes for a 100 ppm chlorine solution. Contact time is not optional; a three-second dip accomplishes nothing.
5. Air-dry on a rack. Do not towel-dry - cloths recontaminate clean equipment.

Verification and maintenance. Test the solution with test strips every time it is made and periodically during use; remix when it falls below strength, becomes cloudy, or is visibly soiled, and in any case at least every few hours. Keep a simple log with initials, time, and ppm reading - this is the document an inspector will ask for after a complaint.

The bigger fix. Even perfect technique will not save a scored wooden board. Stand-alone food-contact surfaces must be smooth, non-absorbent, and easily cleanable; once wood is scored it cannot be. Replace it with colour-coded boards: one for raw meat and poultry, one for ready-to-eat. The two-compartment sink is acceptable in Ontario only with a chemical sanitizer step handled correctly - if the operation cannot manage the sanitizer, it needs a third compartment or a mechanical dishwasher.

Three distinct problems.

1. Contamination of the solution. A cloth that has just wiped raw chicken goes back into the bucket, seeding the entire solution with organic matter and bacteria. From that moment the bucket is a contamination reservoir, and every surface wiped afterwards receives a thin film of whatever was on the chicken.
2. Strength decay. Chlorine dissipates with organic load, heat, light, and time. A 9:00 a.m. bucket reading 50 ppm (already half strength) is closer to plain water by lunch, and nobody tested it again.
3. Cross-use. The same cloth wiping the prep counter and the salad plating area spreads contamination onto a surface that ready-to-eat food touches.

The correct practice.

• Store wiping cloths submerged in sanitizer at the correct concentration (100 ppm chlorine) - a dry cloth on the counter is a bacterial incubator, since it stays warm and damp.
• Use separate, colour-coded cloths for raw-food areas and for ready-to-eat or front-of-house areas, and never let a raw-area cloth enter the RTE bucket.
• Change the solution regularly - at minimum every few hours, immediately when it is visibly soiled or the strip reading falls below 100 ppm - and test it with strips.
• After a raw-meat wipe, the cloth goes to the laundry, not back into the bucket.
• Launder cloths at the end of the day; do not use them for drying clean dishes or utensils at any point.
• Keep the bucket off prep surfaces where splash can reach food, and label it with the contents and the time it was mixed.

The underlying lesson for the exam: sanitizing is a three-part process of cleaning, correct concentration, and adequate contact time. Skip any part - as happened here - and the bucket becomes a tool for spreading contamination rather than removing it.