4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
California DTSC Adds Microplastics to Candidate Chemicals List
Posted: August 13th, 2026
Author: Nathan Jong On June 18, 2026, the California Department of Toxic Substances Control (DTSC) officially added microplastics to the Candidate Chemicals List under its Safer Consumer Products (SCP) Program. DTSC defines microplastics as plastic particles smaller than 5 millimeters. […]
Read articleThe Texas MSGP – Renewed and Ready
Posted: August 13th, 2026
Author: Anna Richardson The Texas Multi-Sector General Permit (MSGP), TXR050000, regulating stormwater discharges from industrial facilities has been made available just ahead of its effective date of August 14, 2026. The renewed MSGP, permit fact sheet, and additional details are […]
Read articleSigns You Need a Database Instead of an Excel Workbook
Posted: August 6th, 2026
Author: Julie Taccino Like many engineers and environmental professionals, I love Excel workbooks. Excel shines when it is used for an intended purpose, such as self-contained calculations. Over the course of my career I have seen many cases where Excel […]
Read articleU.S. EPA Guidance on Emissions Offsets
Posted: August 6th, 2026
Author: Ryker Harger On July 1, 2026, the United States Environmental Protection Agency (U.S. EPA) published a memorandum from Aaron Szabo, Assistant Administrator of the Office of Air and Radiation, “Guidance on Clean Air Act Nonattainment New Source Review (NNSR) […]
Read articleCalifornia SB 253 July 2026 Rulemaking Updates and Public Workshop
Posted: August 6th, 2026
Author: Corey Prigent The California Air Resources Board (CARB) approved the initial regulation under the Climate Corporate Data Accountability Act [Senate Bill (SB) 253] on February 26, 2026. The approval was shortly followed by a workshop in March, a reporting […]
Read articleTexas Aboveground Storage Vessel Safety Program – What to Know Before You Register
Posted: July 30th, 2026
Author: Maddy Vanlandingham On August 2, 2023, the Texas Commission for Environmental Quality (TCEQ) promulgated 30 TAC § 338, which requires facilities in Texas to participate in the Aboveground Storage Vessel Safety (ASVS) Program. The purpose of the ASVS Program […]
Read articleU.S. EPA Revises Tier II Hazard Reporting For 2027
Posted: July 30th, 2026
Author: Joe Grosse The United States Environmental Protection Agency (U.S. EPA) has finalized a significant revision to the Emergency Planning and Community Right-to-Know Act’s (EPCRA) hazardous chemical inventory reporting requirements in the Federal Register Document 2026-12426. Published on June 22, […]
Read articleGood News on New Source Review
Posted: July 30th, 2026
Author: Amy Marshall As we’ve described in several articles, the United States Environmental Protection Agency (U.S. EPA) has been active in New Source Review (NSR) related guidance and regulatory activity over the past two years. One of the current administration’s […]
Read articleProposed Revisions to Minor New Source Review Public Participation Requirements
Posted: July 23rd, 2026
Author: Roy Rakiewicz On July 7, 2026, The U.S. Environmental Protection Agency (U.S. EPA) proposed to revise the public participation regulatory requirements for sources subject to Clean Air Act (CAA) minor new source review (NSR) programs approved into State Implementation […]
Read articleSeven Governors Push for Microplastics Monitoring in UCMR 6
Posted: July 23rd, 2026
Author: Aidan Decker July 2026 Update: On July 1st, the United States Environmental Protection Agency (U.S. EPA) published Unregulated Contaminant Monitoring Rule 6 (UCMR 6). Despite public appeal and a petition signed by seven governors, UCMR 6 will not include […]
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