EPR Consulting · 2026

Packaging EPR, translated for the people who have to live with it.

Source + Soil is a consulting practice for packaging producers navigating new Extended Producer Responsibility laws — and for the communities learning how to unlock reimbursement and build recycling programs that qualify for funding.

Source + Soil

Circular Economy, Grounded in practice

What we do

Three lanes of work, one integrated practice.

We sit at the table with producers, PROs, and local governments — because EPR only works when everyone is speaking the same language.

1

EPR Compliance Advisory

For packaging producers and PROs navigating multi-state obligations in Oregon, California, Colorado, Maine, Minnesota, Washington, and Maryland.

  • Multi-state obligation & gap analysis
  • Fee modeling and eco-modulation strategy
  • Reporting systems that survive an audit
$15k–$75k project · Retainer $3k–$8k/mo
2

PRO Reimbursement Navigation

For municipalities and regional programs ready to unlock the funding that EPR laws now make available to them.

  • Eligibility assessment & needs documentation
  • Claim submission and PRO negotiation
  • Annual reporting & performance tracking
$10k–$40k project · Or % of funds recovered
3

Recycling + Reuse Program Design

For communities, tribes, and service providers analyzing system gaps & designing the programs that EPR funding is meant to support.

  • Curbside, drop-off, and hard-to-recycle streams
  • Hauler RFPs, contracts, and vendor management
  • Reuse + refill gap analysis
  • Communities of practice
$20k–$100k project · Scales with scope
Oregon California Colorado Maine Minnesota Washington Maryland

Currently serving clients across all seven EPR-active states.

Why Source + Soil

We've built what we advise.

Operators, not just analysts

Our founder has hands-on operational experience — designed drop-off centers, stood up nonprofit and for-profit curbside programs, and written educational how-to guides for business leaders and the public. We know what it takes to run a program — not just analyze one.

We've written the laws

Our experience drafting ordinances, regulations, and statewide statutes means we read EPR laws for intent and specifics. That translates into compliance paths producers can actually follow.

Big picture, to the last detail

Strategic framing for the C-suite, and the technical specificity your operations, legal, and finance teams need. We don't hand off — we ride it down to implementation.

Kara, Founder & Principal of Source + Soil
About the founder

Kara Mertz — Founder & Principal

Kara's background in recycling and producer responsibility is long and varied. On the operations side, she's helped design and establish hard-to-recycle drop-off centers and curbside collection programs. On the policy side, she's drafted ordinances, regulations, and statewide statutes. Underpinning these, she's designed and managed feasibility studies and financial models to guide business pivots and transformations over time. From this, comes an understanding of how legislation, regulations, and operational pathways must be written to actually function on the ground, and she effectively advocates to keep the work grounded in field expertise.

A strategic, big-picture thinker, Kara knows where the technical details must ultimately lead — and she actively seeks out communities of practice, engaging others in the purpose and process of creating workable solutions. In that work, she'll ask powerful questions, invite diverse voices to the table, and help organizations incorporate learning into the system.

Contact

Let's talk.

Most engagements start with a free 30-minute call. Bring your questions — we'll bring a concrete next step.