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Increase productivity.
Eliminate chaos.

We teach civil contractors continuous improvement.
Book a Call to Learn How
 Capacity available

"Zack teaches you the mindset to build a lean, standardized, and efficient business—powered by a culture of people working toward the same goal: getting better every day. As I tell everyone I talk to about Zack’s methods: you want this, your people want this, and your customers want this."

Matt Gillett
Owner of Gillett Excavating, LLC

“I work with dozens of top-notch excavation contractors. I see the successes and the struggles in the industry. And I’ve watched first-hand as Zack has brought incredible value by showing my people how to create processes and systems to make their business run better (even when they’re not “systems” people).”

Benjamin Holmgren
Owner of Kestaa, LLC

"Our company has been in business for ten years, and while some of our issues are due to geographic and seasonal challenges, our growth has stagnated due to a lack of structure and repeatable processes. This has led to difficulties in day-to-day operations due to inconsistent expectations and the limited local "head knowledge" our team members retain. Since working with Zack, we've been able to provide our team with clear expectations and our "standard way" of doing what we do.  We were taught methods and tools to improve and standardize our way of doing our work and, better yet, train inexperienced team members. While sometimes it's easy to be embarrassed about the flaws that we have within our businesses, realize that Zack has seen it all.  He's personable, approachable, and helpful, and wants you, your people, and your business to succeed."

Dave Newby
Owner of Great Divide Earthworks LLC

"Your skills determine your ceiling, not your circumstances."

Without

No processes

Lost knowledge

Same mistakes

Constant chaos

With

Simple systems

Documented expertise

Proactive fixes

Daily improvement

Lean Dirt isn’t just a toolkit—it’s how excellent businesses think.

We help civil contractors build lean operating systems that reduce friction, capture what works, and make continuous improvement part of the culture.

Because when your crew knows the right way to work—and has the tools to do it—it shows in your bottom line.

‍

How It Works: 3 Components

1
Skills
The ability to see waste, solve problems, and improve how work gets done.
2
Systems
The tooling to easily create, improve, and access standard work.
3
Processes
Repeatable methods for getting the right work done the right way—every time.

Who am I?

Hey, I’m Zack Estes. I come from manufacturing, where process is everything.

But at a conference on manufacturing operational excellence, I looked around and realized something: most of the people there weren’t in manufacturing.

They were in healthcare, education, service… even construction.

That’s when it hit me:

Lean thinking isn’t industry-specific.

It’s how smart businesses run—period.

Then I started working with civil contractors. Good people. Hard work. Big equipment. But no system. No structure. No simple way to run the business better, day by day.

Lean Dirt is the operating system made for the dirt world.

It’s simple. Practical. Easy to stick with.

Lean Dirt...

✅ Increases your production capacity

✅ Lowers your costs

✅ Gets everyone involved in making the business better

It’s daily maintenance for your business—just like your machines.

Lean Dirt makes it easier for your team to do the right work, the right way.

How's it work?

Simple: 60-minute training sessions, twice per month + daily check-ins for feedback and refinement.

processarb logo
paper airplane

Spot Inefficiencies

checklist

Build Processes

magic wand

Improve Processes

test tube and checkmark

Train Process Ownership

checkmark on box

Identify Bottlenecks

 Capacity available

Join

processarb logo
We help small businesses do more with fewer people.

See if processarb is right for you.

Learn more about how processarb works and how it can help you.
Book a 15-min intro call

Tired of rework, delays, and chaos on the job?

Let's fix that—in 30 minutes.
Book a free call and get:
  • Clarity on where your business is stuck.
  • Straight answers about building a team that improves daily.
  • A practical next step to start building a business that runs lean.
Book a Free 30-min Call

Frequently Asked Questions

We figured you'd have a few questions. Do your proper vetting with a scroll through our FAQ.
Why wouldn't I just hire a full-time employee?

For starters, the annual cost of a full-time senior-level process engineer will exceed $100,000 plus benefits. Not to mention, our process engineers are fully vetted, trained, and managed by… not you!

What’s the turnaround time?

It depends on the scope of the problem. Some headaches are a 3-week project. Others are a 3-hour sprint. Regardless, you’ll receive an update every 3 business days (at the latest) on the progress.

Who are the process experts?

Specially-trained process engineers. Our team lives and breathes the Toyota Production System—focused on riddening businesses of grueling and expensive waste.

What do I actually receive?

When we design a process, we’ll manage all of the work through implementation—after your approval, of course. Additionally, we’ll document flowcharts and SOPs for all solutions.

What if I don’t like the result?

Before implementation, you’ll have a chance to approve the solution. After the solution is implemented, you’ll have unlimited revision cycles to make sure you’re 100% satisfied.

What if I only have one request?

That’s fine. Headaches come and go. You can pause your subscription when finished and return when you have additional process improvement needs.

Can I pause my subscription?

We understand you may not have enough work to fill up the entire month. Maybe you only have one or two processes in dire need of improvement at the moment. That’s where pausing your subscription comes in handy. Billing cycles are based on a 31-day period. Let’s say you sign up and use the service for 21 days, and then decide to pause your subscription. This means that the billing cycle will be paused and you’ll have 10 days of service remaining to be used anytime in the future.

Are there any refunds if I don’t like the service?

Due to the high quality nature of the work, there will be no refunds issued.

Free Download:
The Lean Dirt Cheat Sheet

“I know we need processes, but I don’t know where to start.”

Everybody says it.

Nobody knows where to start.

So I made a cheat sheet.

It’s short.

It’s simple.

And it’ll show you EXACTLY how to start your Lean Dirt journey—today.

🚜 Practical steps you can take, immediately

🧼 The daily 30-minute routine that changes everything

🔧 My go-to tool for making processes stupid-easy to use

📘 The 1 book (free) I recommend to every field team

See if

is right for you.

Master the skills to operationalize your dirt business.
Book a 30-min Call
© 2025 The 5 Functions LLC dba Lean Dirt. All rights reserved.
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Here’s the process

No matter the scope, whether it’s small individual process improvements or large business-wide system installations, progress updates are provided every 3 business days.

Submit Request

1
Next
Review

Review

2
Unclear
Clear
Follow-Up
Solution Design

Follow-Up

3
Next
Solution Design

Solution Design

4
Next
Customer Proposal

Customer Proposal

"No"
"Yes"
Follow-Up
Implement
5

Implement

Next
Test
6

Test

Next
Deliver
7

Deliver

Next
Feedback
8

Feedback

"Not Quite Right"
"Great!"
Follow-Up
Complete
9

Complete

Next
We're on to the next request!
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