No OSHA Lightning Standard: Writing a Weather Stop-Work Policy That Holds Up
OSHA has no lightning standard. The exposure sits in how you handle the worker who stops for thunder, and in what your written weather plan actually says.
EHS Insights & Compliance Updates
Industry news, compliance guidance, and best practices from iSi Environmental's expert team
Two Ozone Classifications, One Plant: The 25 Ton Threshold Houston and Dallas Fort Worth Sources Are Permitting Against Right Now
Houston and Dallas Fort Worth sit in two ozone nonattainment classifications at once, so the binding air permitting threshold is 25 tpy of VOC or NOx, not 50.
EPA Reopened the Gasoline Distribution NESHAP. Your First LDAR Survey Is Still Due May 8, 2027.
EPA's September 2026 gasoline distribution NESHAP reconsideration reopened control-device rules and left the May 8, 2027 first LDAR survey date in place.
There Is No Kansas Phosphorus Number: How a Lower Arkansas TMDL Sets Your NPDES Limit
Kansas publishes no numeric stream phosphorus criterion, so a revised Lower Arkansas TMDL sets the wasteload allocation your next NPDES renewal must match.
What OSHA's New Naloxone Guidance Asks of Your Workplace First Aid Program
OSHA Fact Sheet 4519 recommends stocking opioid overdose reversal medications. No OSHA standard requires naloxone. Here is what your first aid program owes.
EPA Asks About Alternatives to TCLP Testing: What the LEAF Methods Mean for Your Hazardous Waste Determinations
EPA's September 2026 notice asks whether LEAF leaching methods could support an alternative to TCLP testing for industrial landfill waste. Nothing changes yet.
EPA's Final Rule on Title V Applicable Requirements: Which NSR Conditions Are Now Insulated and Which Stay Contestable
EPA's final Title V applicable requirements rule is effective October 26, 2026. NSR permit terms become final only where a permit had public notice and comment.
Thirty Dry Days: How the 2026 WOTUS Supplemental Proposal Redefines Relatively Permanent Waters
EPA's September 2026 WOTUS supplemental proposal would define relatively permanent waters as perennial, with a single 30-day dry period. Comments close October 9.
The OSHA 15-Day Records Clock Is Two Different Rules: What Happens When an Employee Asks for Their Exposure File
Federal OSHA gives you fifteen working days to explain a delay, not to produce the record. California gives fifteen calendar days, hard. Here is the difference.
Naming a Chemical Hygiene Officer Is Element Seven of Eight: What 1910.1450 Actually Requires a Laboratory to Write Down
OSHA requires eight specific elements in a laboratory chemical hygiene plan, plus an annual effectiveness evaluation most labs cannot evidence. All eight here.
Class I Injection Wells: Permit Rules, State Agency Splits, and the Arbuckle Pressure Problem
Class I injection well permitting, state by state: a different agency in Kansas, Oklahoma, Texas and Nebraska, EPA direct in Colorado, and banned in Missouri.
Lead and Copper Rule Improvements: Service Line Inventory Rules for Facilities That Own Their Water
If your plant, school, or campus runs its own well, federal lead service line inventory rules already apply. EPA is enforcing now. Here is how to check.
Deleted From the Superfund NPL Is Not Clean: What Buyers and Lenders Have to Check Before Closing
NPL deletion is a rulemaking. What a buyer, lender, or developer has to verify on a delisted or partially delisted Superfund parcel before closing.
Before You Break Ground on a Remediation Job: The HASP, the SWPPP, and the State Filing Clock That Costs Contractors a Season
Kansas wants your stormwater NOI 60 days out. Nebraska wants 7. What a general contractor needs in hand, HASP included, before a remediation job starts.
Acetone in a Groundwater Sample: Trip Blanks, Laboratory Contamination, and the Decision Tree Nobody Publishes
Acetone in a groundwater sample is usually laboratory contamination. Get the trip blank evidence, the current 2x blank rule, and a tree that ends in an action.
OSHA Silica Enforcement in Manufacturing: Your Own 300A Filing Is an Inspection Input
OSHA's silica PEL is 50 µg/m3 and the action level is 25 µg/m3. Here is how Site-Specific Targeting turns a manufacturer's own 300A filing into an inspection.
Kansas Cleanup Sites Get Rechecked Every Five Years. In October 2026, One Came Back "Not Protective" Over Vapor Intrusion.
Two of eight EPA Region 7 five-year reviews came back not protective in October 2026, one of them in Kansas. What the category means and what a Phase I misses.
A 37-Year-Old Kansas Gasoline Release Is Closing With Deed Restrictions on the Neighbors. KDHE Gives 15 Days to Comment.
KDHE opens a 15-day comment window on each draft Agency Decision Statement. That is when Kansas cleanup levels and recorded use restrictions get fixed.
Leading and Lagging Safety Indicators: OSHA Only Uses One of Them to Pick Your Inspection
Leading indicators live in OSHA guidance. OSHA's Site-Specific Targeting program picks inspections from the lagging 300A injury data you submitted yourself.
The Clock Started Before You Read the Report: What a Compliance Audit Finding Obligates You to Do
A compliance audit finding starts two clocks: 21 days to disclose to EPA, 60 days from discovery to correct. What self-disclosure protects and what it does not.
The County Wants an Impact Study Before It Will Hear Your Data Center. Here Is What Is Actually In One.
County data center impact studies, the Sedgwick County pause and Kansas water rights: what the ordinances require and what a water permit actually takes.
EPA's 2026 Regulatory Agenda for Manufacturers: 20 Rules, 4 Media, and Why Eight of Nine July Dates Never Happened
EPA's 2026 agenda filtered to the air, RCRA, TSCA and PFAS actions that hit industrial plants: RINs, dockets, projected dates, and what those dates really mean.
Your Industrial Stormwater Permit Does Not Cover Your Process Water: The 11 Authorized Non-Stormwater Discharges
Your industrial stormwater permit authorizes rain, not process water. The 11 authorized non-stormwater discharges, the 4 banned at food plants, and what to do.
Kansas Water Permits and the 30-Day Clock: What a KDHE Public Notice Means for Your Facility
KDHE names Kansas facilities in a weekly water permit notice with a 30-day comment window. What the clock means, who it covers, and what missing it costs.