Latest / The Operations Podcast with Fexingo: Process, People, and Profit in Modern Business / How a Plastic Recycler Cut Contamination from 25 Percent to 2 Percent
Transcript
- Lucas: So here's a number that stopped me: 25 percent. That was the contamination rate in incoming plastic bales at a mid-sized recycler in Ohio called ReCircle Solutions. One in every four pounds they bought was essentially garbage — not plastic, not recyclable, just waste they paid for and then had to pay to send to a landfill. Luna: Twenty-five percent — that's not a contamination problem, that's a business model problem. How were they even staying afloat? Lucas: Barely. And only because commodity plastic prices were high enough at the time to absorb some of the loss. But the CEO knew that wasn't sustainable. So in early 2025, they launched a full-scale operational overhaul, and over 14 months they got contamination down to 2 percent. That's the story I want to unpack today. Luna: How did they do it? Was it new equipment, better sourcing, both? Lucas: All of the above, but let's start with the most visible change: they installed two optical sorters at the intake line. These are near-infrared scanners that identify polymer types and eject anything that's not a target resin — PVC, silicone, metal, glass. One sorter at the beginning of the line, one right before the wash stage. That alone caught about 60 percent of the contaminants. Luna: Sixty percent — so they still had 10 percent slipping through. What was the rest? Lucas: That's where the human side comes in. They set up what they called 'station audits' — every shift, each operator at a key inspection station would log every contaminant they pulled, with a photo and a category tag. Once a week, the operations manager compiled those into a heat map showing which materials and which suppliers were generating the most rejects. Then they shared that heat map directly with suppliers. Luna: So they turned the data around and gave it back upstream. That's smart — you're making the supplier part of the solution instead of just penalizing them. Lucas: Exactly. And they added teeth. They created a supplier scorecard with three metrics: contamination rate, consistency over time, and responsiveness to corrective action requests. Suppliers that scored below a 70 out of 100 got a warning. Two consecutive warnings and they were suspended for 60 days. Two suppliers actually lost their contracts entirely within the first year. Luna: Wow. That's bold. Did they have replacement suppliers lined up? Lucas: They did. They had been quietly qualifying backup sources during the scorecard rollout. So when they cut a supplier, they had someone else ready within two weeks. But here's the part I found really interesting: the scorecard wasn't purely punitive. They also created a 'preferred supplier' tier with a 5 percent price premium and faster payment terms — net 15 instead of net 45. That gave suppliers a real incentive to clean up their bales. Luna: A carrot and stick approach, but with real economics. The 5 percent premium probably cost less than the extra sorting and landfill fees they were paying before. Lucas: Exactly right. The CFO calculated that each percentage point of contamination cost them roughly $120,000 a year in disposal and lost processing time. So dropping from 25 percent to 2 percent saved them about $2.8 million annually. The premium payments to preferred suppliers were about $400,000. Net win of $2.4 million. Luna: Do we know how the suppliers actually improved their bales? I mean, they're collecting from curbside programs and sorting facilities — it's not like they have full control over what people throw in the bin. Lucas: Fair point. What ReCircle did was send their own quality auditors to the largest supplier facilities — the ones that accounted for 80 percent of volume. They'd spend a day at the supplier's site, walking the line with the plant manager, showing them the actual photos from the station audits. In many cases, the contamination was coming from a single MRF — materials recovery facility — that had a broken eddy current separator or a poorly calibrated screen. Fixing that one machine often cut that supplier's contamination rate in half. Luna: So it was less about the supplier being negligent and more about them not knowing where the weak point was until someone showed them. That's a coaching model, not a compliance model. Lucas: Right. And once they had the data and the relationships, they went a step further. They launched a customer-facing rebate program for the municipalities and haulers that supplied the original material. If a hauler delivered a load with less than 5 percent contamination, they got a rebate of $10 per ton. If it was above 10 percent, they paid a penalty. Within six months, the average contamination from those direct-sourced loads dropped from 15 percent to 4 percent. Luna: So the whole system — from the household bin to the final pellet — started to tighten up. That's a closed-loop operations mindset, applied to quality. Lucas: Exactly. And I think that's the real lesson here. It's not that optical sorters are magic — they're becoming standard in modern recycling. The hard part was the behavioral change across the entire supply chain. ReCircle basically turned quality from a problem they absorbed into a shared metric that everyone could act on. And it worked because they made the economics clear at every step. Luna: Look, if these conversations have moved your work forward in some small way — given you an idea, a framework, a number you referenced in a meeting — then that's exactly why we keep doing this. And listener support is what keeps the show ad-free and independent. If that's valuable to you, you can find us at buy me a coffee dot com slash fexingo. No pressure. Just a way to keep the conversations going. Lucas: Yeah, and honestly, stories like this one take hours to research and fact-check. If you get even one operational insight you can apply, it's worth it. But back to ReCircle — one more detail I want to hit. Luna: Please. I'm curious about the employee side. You mentioned station audits — how did the operators respond to having to log every contamination? Lucas: Mixed at first. Some saw it as extra paperwork. But the operations manager made it part of a game — each shift had a 'contamination catch rate' target, and the winning shift each month got a team lunch and a small bonus. Within two months, the operators were actively competing to find more contaminants. They also started suggesting process improvements — like adjusting the belt speed at certain points to give them more time to spot non-recyclables. Management implemented several of those suggestions. Luna: That's a classic example of giving people ownership over the outcome. When they see the data they generate actually leads to changes, engagement goes up. Lucas: Exactly. And the end result was not just lower contamination. Throughput increased by 18 percent because the line jammed less often. Downtime from cleaning out non-recyclable material dropped by 40 percent. The plant avoided a planned $3 million expansion because they were effectively getting more usable material from the same incoming tonnage. Luna: So the contamination reduction paid for itself multiple times over. That's a textbook operational win. Lucas: It is. And I think the reason it worked is that they didn't just buy a machine and hope for the best. They redesigned the entire quality loop — from supplier coaching to operator engagement to customer incentives. Every link in the chain had a reason to care. Luna: I wonder if this model could apply to other industries where contamination is a problem — food processing, pharmaceuticals, even data centers with bad data. Lucas: Absolutely. The principles are the same: measure precisely, feed data back upstream, align incentives, and empower the people at the point of action. ReCircle's story is specific to plastic recycling, but the playbook is transferable. That's the takeaway for me. Luna: Yeah. A great case study. And a reminder that sometimes the biggest gains come from tightening the loops you already have, not from buying new gear. Lucas: Exactly. So next time you're looking at a quality problem, ask yourself: can I see the full picture of where the defects come from? And does every supplier and every operator have a reason to help fix it? If not, there's your starting point.