When a contaminated site stays fenced off for years, most of us assume the science is hard or the money has run out. Often the delay has a plainer cause: a report travelling back and forth between a consultant and a regulator.

One letter, 149 days

The San Jacinto River Waste Pits is a federal Superfund site east of Houston. On 25 November 2024, the consultant resubmitted the final design for the cleanup. The US Environmental Protection Agency (EPA) sent its comments back on 23 April 2025, 149 days later. That was the second round of review. EPA reviewed the design together with the state environmental agency, the county, the Port of Houston, the state transport department and NOAA.

What did the comments say? Three of EPA's first four general comments were about document control, not the science. In EPA's words, the problems were:

• Responses to earlier comments were "not consistently incorporated" into the text, figures and tables.
• A change made in one part of the document was "not consistently carried throughout the entire document."

In other words, the fixes were promised but didn't reach every page that needed them. So the design went round the loop again.

Plans assume review is quick

Project schedules rarely budget for this. One New York State investigation schedule from 2004 gave the laboratory about two months, and data checking about two months more. It gave agency review only 10 days for the investigation report and 20 days for the study of cleanup options.

These are different projects, so the chart isn't a like-for-like comparison. But it shows the pattern: plans treat review as a short gate, while a real round can take about five months. Large designs are also often reviewed at several stages, so a gap like this can repeat several times before any digging begins.

Why this is a stewardship issue

Review is where public oversight happens, and it should be careful. But the time lost at San Jacinto went on checking consistency, not on questions of safety or the environment. That delay has real costs:

• For communities: the site stays as it is while each round runs.
• For regulators: reviewers with limited time spend it checking whether a correction reached every table.
• For trust: long silences between rounds look like inaction from the outside.

The delay can be cut. At the West Lake Landfill in Missouri, EPA says restructuring the work and committing to faster review turnarounds cut nearly two years from the draft cleanup timeline. Pennsylvania's Act 2 programme sets review clocks of 60 and 90 days, and a report counts as approved if the agency doesn't respond in time.

What would help

1. Track each comment to every place it affects. Keep a log that links each agency comment to the sections, tables and figures it touches, and carry that log across rounds.
2. Check consistency before resubmitting. If a number or a decision changes, confirm the change appears everywhere in the document. Tools can do most of this checking.
3. Measure the loop. Agencies and firms could publish how many review rounds a document takes and how long each takes, so this delay becomes visible.
4. Use clear review clocks. Deadlines like Pennsylvania's make both sides plan for review time rather than hope it will be short.

What we don't know yet

This article rests on a handful of public documents, and San Jacinto is a single case. We don't yet know how typical a 149-day round is, or how many rounds a cleanup document usually takes. We're asking practitioners on both sides.

If you have written, reviewed or waited on one of these reports, tell us in the comments: how many rounds did it take, and what caused them?

Sources

• US EPA Region 6, comment letter on the San Jacinto River Waste Pits Revised 100% Remedial Design (23 April 2025): https://semspub.epa.gov/work/06/100033529.pdf
• US EPA Region 7, West Lake Landfill OU-1 remediation timeline (April 2025): https://www.epa.gov/system/files/documents/2025-04/2025-04_west-lake-landfill-ou1-remediation-timeline_public_508compliant.pdf
• 25 Pa. Code § 245.313, review periods under Pennsylvania's Act 2: https://www.law.cornell.edu/regulations/pennsylvania/25-Pa-Code-SS-245-313
• NYSDEC, remedial investigation and feasibility study work plan schedule for a utility site (2004).