4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
Sprinkle Some ALL4 On It!
Posted: March 19th, 2013
As we approach ALL4’s 11th anniversary, I occasionally get asked what I do at ALL4 – especially now that we are 35 people and have multiple…
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PM2.5 Modeling Guidance Released by U.S. EPA
Posted: March 14th, 2013
On March 4, 2013 the U.S. EPA Office of Air Quality Planning and Standards (OAQPS) released “Draft Guidance for PM2.5 Permit Modeling” memorandum. The memorandum provides…
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Continuing the Momentum on Air Toxics Rules – Utility MACT
Posted: March 8th, 2013
In the midst of a tug of war between environmental groups, state agencies, and industry, the U.S. Environmental Protection Agency (U.S. EPA) remains bullish on the issuance of its proposed revisions…
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A Resolution in the Case of ‘Upset’ Emissions
Posted: March 4th, 2013
U.S. EPA has ended an almost two-year long battle with environmental groups regarding provisions in State Implementation Plans (SIPs) related to emissions during Startup, Shutdown and Malfunction…
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Toxic Release Inventory (TRI) Season Is Here – Are You Ready?
Posted: March 4th, 2013
On December 3, 1984, a horrifying 32 tons of toxic gases leaked from a U.S.-owned pesticide plant in Bhopal, India, leading to what many regard as the world’s worst industrial disaster to date. Estimates of the total death toll suggest […]
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Revisions to the PADEP Plan Approval and Permit Exemption List
Posted: March 1st, 2013
Attention compressed natural gas dispensing, oil and gas exploration, development, production facilities! The PADEP has published a notice in the Pa. Bulletin that the listing of sources…
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Hydrogen Sulfide Accounting and Reporting in Advance of this Year’s Toxic Release Inventory Reports
Posted: February 28th, 2013
As environmental personnel gear up for the suite of annual reports due each year, 2013 brings an important change to the Toxic Release Inventory (TRI) report. Beginning with the TRI report due July 1, 2013, releases of hydrogen sulfide (H2S), […]
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ALL4’s Is That Your Final Answer?
Posted: February 25th, 2013
Test your knowledge across the environmental field, on the building blocks of air quality rules, on ALL4 general trivia, and with brain teasers that have perplexed us…Take on ALL4’s Is That Your Final Answer?
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Area Designations and Implementation of the Sulfur Dioxide National Ambient Air Quality Standard
Posted: February 22nd, 2013
On February 6, 2013, U.S. EPA issued a white paper outlining the agency’s updated strategy for completing initial area designations under the June 2010 1-hour primary sulfur dioxide (SO2)…
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ALL4 Seeking Part-Time Administrative Assistant
Posted: February 20th, 2013
ALL4 currently employs a five-person Administrative Team and we are looking to hire another part-time member of this team to provide general administrative support…
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