Category: Blog

What This Means for Permittees:Dischargers should take this opportunity to review and align with the updated regulatory framework. Key considerations include:✅Confirming designated uses and applicable effluent limits✅Evaluating impacts to permit renewals and monitoring programs✅Assessing potential implications for use-attainability analyses✅Reviewing WYPDES permit language and compliance schedules Wyoming’s updated tools, including its interactive recreation-use map and criteria… Continue reading EPA Approves Wyoming’s Updated Water Quality Rules

The CDPHE adopted the EPA’s drinking-water standard for six key PFAS compounds (PFOA, PFOS, PFHxS, PFNA, and GenX chemicals) through Regulation 11. The “initial monitoring” deadline is April 1, 2027. These requirements apply to community and non-transient, non-community water systems, which must complete initial PFAS monitoring to establish future compliance obligations. The monitoring results will… Continue reading 🚰 Colorado Water and PFAS 

A Phase I Environmental Site Assessment (ESA) can tell a story — but a Phase II ESA uncovers the facts. Rule Engineering provides support for due diligence and compliance projects through targeted subsurface investigations, including: Soil borings and lithologic logging Groundwater sampling Field screening and laboratory analysis Regulatory guidance and reporting Whether you’re purchasing property, redeveloping a site, or… Continue reading 🔎 Phase II ESA: Turning Questions Into Data

From complex air permits to day-to-day compliance, Rule Engineering helps facilities stay ahead of regulatory requirements and operational risks.  Our air services include:• Permit compliance management — building practical tools and tracking systems to ensure every requirement is met on time.• Air permit development & renewals — including construction permits, operating permits, and Title V… Continue reading 🌬️ Air Permitting & Compliance — Keeping Your Operations on Track

We attended the Rocky Mountain EHS Peer Group meeting in February, where EPA Region 8 shared current priorities for the region (Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming). They highlighted an effort to clear backlogs in permits, SIP approvals, and enforcement matters (including Superfund projects). While not a new rulemaking, this represents an… Continue reading 🔎 EPA Region 8 Signals Focus on Reducing Permit & Enforcement Backlogs

As the federal definition of Waters of the United States (WOTUS) narrows, Colorado has stepped in. Regulation 87 establishes a state dredge-and-fill authorization program for impacts to wetlands and streams that may no longer be federally protected — especially seasonal and temporary-flow waters common across the Mountain West. ✔️ What Regulation 87 Does:• Covers non-WOTUS… Continue reading 📢 Colorado Fills the WOTUS Gap: What to Know About Regulation 87

📊 The Greenhouse Gas Reporting Program (GHGRP) requires facilities emitting 25,000 metric tons or more of CO₂-equivalent annually to report their greenhouse gas emissions. The EPA has extended the GHGRP reporting deadline for 2025 data from March 31, 2026 to October 30, 2026 while the agency continues rulemaking on proposed revisions to the Greenhouse Gas… Continue reading 🚨 EPA Extends GHGRP 2025 Reporting Deadline

Last month, the U.S. EPA repealed the 2009 greenhouse gas (GHG) Endangerment Finding, the legal basis for many federal climate regulations. What this means in practice is still evolving:• Federal GHG standards could change — depending on litigation outcomes• States may step in with their own requirements• Long-term planning for regulated facilities is now more… Continue reading ⚠️ EPA Repeals Greenhouse Gas Endangerment Finding — What Now?

Last December, the U.S. Environmental Protection Agency (EPA) approved a limited set of site-specific criteria and Water-Effects Ratios (WERs) under the Texas Surface Water Quality Standards (TSWQS). The updates, issued in March and September 2025, are targeted and apply only in specific circumstances:Applies only to copperApplies only to certain designated segments This means facilities will… Continue reading 💦 Texas Surface Water Quality Standards Update

This site tells the story of a subsurface release — and our job is to make it visible. Earlier this year, our team was out in the field delineating a hydrocarbon plume by advancing boreholes, collecting soil samples, installing monitoring wells, and collecting groundwater samples to define the extent of impact and guide cleanup. Every… Continue reading 🚧 Delineating a Fuel Release in the Field 🚧