Industry news, compliance guidance, and best practices from iSi Environmental's expert team
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's September 2026 gasoline distribution NESHAP reconsideration reopened control-device rules and left the May 8, 2027 first LDAR survey date in place.
Kansas publishes no numeric stream phosphorus criterion, so a revised Lower Arkansas TMDL sets the wasteload allocation your next NPDES renewal must match.
OSHA Fact Sheet 4519 recommends stocking opioid overdose reversal medications. No OSHA standard requires naloxone. Here is what your first aid program owes.
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 Title V applicable requirements rule is effective October 26, 2026. NSR permit terms become final only where a permit had public notice and comment.
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.
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.
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 well permitting, state by state: a different agency in Kansas, Oklahoma, Texas and Nebraska, EPA direct in Colorado, and banned in Missouri.
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.
NPL deletion is a rulemaking. What a buyer, lender, or developer has to verify on a delisted or partially delisted Superfund parcel before closing.
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 is usually laboratory contamination. Get the trip blank evidence, the current 2x blank rule, and a tree that ends in an action.
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.
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.
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 indicators live in OSHA guidance. OSHA's Site-Specific Targeting program picks inspections from the lagging 300A injury data you submitted yourself.
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.
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 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 authorizes rain, not process water. The 11 authorized non-stormwater discharges, the 4 banned at food plants, and what to do.
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.
The Eighth Circuit stay keeps Missouri St. Louis sources at 100 tpy RACT and NNSR thresholds today, while the Illinois side of the same airshed sits at 50 tpy.