Formaldehyde at 0.5 ppm: The Action Level That Starts a 6-Month Monitoring Cycle
Formaldehyde at 0.6 ppm is under the 0.75 ppm PEL and still over the action level, which starts 6-month monitoring and medical surveillance under 1910.1048.
EHS Insights & Compliance Updates
Industry news, compliance guidance, and best practices from iSi Environmental's expert team
8,600 Pounds Against a 10,000-Pound Threshold: The Process Safety Duties PSM Never Covered
A 2,000-gallon propylene tank holds 8,600 lb, under the 10,000 lb PSM threshold. Two general duty clauses and 29 CFR 1910.110 reached that site anyway.
Asbestos Rules After a Fire: What Applies When a Burned Building Comes Down
A fire does not exempt a burned building from the asbestos NESHAP. What applies when a fire damaged structure is demolished, who files, and what six states add.
There Is No Single Kansas Quarry Permit: The Five Environmental Authorizations a Limestone Crusher Holds
A Kansas quarry carries five environmental permits from three divisions in two departments, and three are not KDHE's. The map, and the October 31 clock.
Asbestos Operations and Maintenance Programs for Commercial and Industrial Buildings: What Federal Law Requires and What It Only Recommends
No federal rule requires an asbestos operations and maintenance program for a commercial building. Two sourced tables split the required duties from the rest.
Contractor Prequalification Requirements: Which Half of Your Plant's RFP Is Actually Law
Half the contractor requirements in a manufacturing plant RFP carry a CFR section. The other half are the owner's choice, and they narrow the bidder field.
Four Calendars, Not One: The Recurring EHS Deadlines a Manufacturing Facility Owes
A manufacturing plant does not owe one list of dates. It owes four, on four different clocks. Here is every recurring federal obligation with its CFR citation.
Your EHS Manager Left. What Has a Clock on It, and What Does Not.
Your EHS manager left. Almost nothing lapses legally, because the duties bind the employer. Here is what does lapse, with the cited 30, 60 and 90 day fix.
The Waste Route Nobody Owns: Who May Legally Move a Drum Inside Your Plant
40 CFR 262.15(a) ties satellite accumulation to the process operator. What that means for in-plant waste handling in a manufacturing plant, and who may move it.
Industrial Wastewater Pretreatment Permits: The Local Limit Is the Number That Binds You
Federal metal finishing cadmium sits at 0.69 mg/L. A Kansas City metro city sets 0.020 mg/L for the same metal. What your pretreatment permit requires.
Subpart GG or 6H: Which Air Toxics Rule Governs Your Aerospace Coating Line
Subpart GG applies only to aerospace facilities that are major sources of HAP. Below 10 and 25 tons per year, Subpart 6H governs instead. Here is how to run the test.
Subpart N, Subpart 6W, and OSHA Cr(VI): Sorting a Plating Shop Tank by Tank
Chrome plating and anodizing fall under 40 CFR 63 Subpart N even at area sources. The rest of the shop falls under 6W. How to tell which rule covers which tank.
Commercial Mold Remediation in Kansas: What Is Required and What Is Not
A water loss in a Kansas commercial building raises one question above all others: what has to happen before people can use the space again. The answer is not a regulatory number, because no federal mold standard exists.
Lead Paint in Commercial and Industrial Renovation: Which Rules Reach Your Building
EPA's RRP rule does not cover most commercial or industrial buildings. Here is what governs a plant renovation instead: OSHA 29 CFR 1926.62 and RCRA waste testing.
When to Test Indoor Air for Mold, and What the Results Can Actually Prove
There is no federal mold standard and no legal limit for airborne mold. Here is what air, surface and bulk samples establish in a commercial building, what they cannot establish, and the three situations where sampling is worth the money.
Lead in Construction: What 29 CFR 1926.62 Requires Before Your First Sample Comes Back
OSHA's construction lead standard presumes exposure for named demolition, blasting and torch-cutting tasks and demands full protection on day one, before any lab result exists.
Spray Booth Air Permits: How to Calculate Potential to Emit and Find Your State's Trigger
A new spray booth usually needs state pre-construction authorization before install. Run the potential to emit math, then check the trigger in six states.
Your Shop Just Switched to Stainless: When OSHA Requires Welding Fume Sampling for Cr(VI) and Manganese
A stainless or chrome-alloy changeover triggers additional exposure monitoring under 29 CFR 1910.1026(d)(2)(vi). What that means for Cr(VI), manganese, and who gets sampled.
Colorado Class VI Primacy Starts November 12. Your CO2 Compressor Building Still Answers to Federal OSHA.
Colorado's ECMC takes over Class VI carbon storage well permits on November 12, 2026. Here is what OSHA still requires at your CO2 capture and compression skid.
Missouri Narrowed the Air Permit Exemption for Emergency Generators in 2026. One Unit Still Passes.
Missouri narrowed its construction permit exemption for emergency generators on January 30, 2026. One generator still qualifies. Two or more is a calculation.
Two Kansas Counties Flagged Under the 9.0 Microgram PM2.5 Standard, With Final Designations Due February 2027
EPA flagged monitors in Sedgwick and Wyandotte counties under the 9.0 ug/m3 PM2.5 standard. Kansas designations go final February 6, 2027. What changes.
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.
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.