{"data":{"id":"us-va/9vac5-540-180","jurisdiction":"us-va","citation":"9VAC5-540-180","heading":"Emissions limits","body":"A. Manufacturer certified emissions of each CI affected unit located in an attainment area shall not exceed the limits specified in Table III.\n\nTable III\n\nEmissions Limits for CI Units Located in Attainment Areas\n\nGenerator Size (kW)\n\nDisplacement liters/cylinder\n\nModel Year\n\nEmission Limits\n\ng/kW-hr (g/bhp-hr)\n\nPM\n\nPM10\n\nPM2.5\n\nCO\n\nVOC\n\nNOx\n\nx \u003c 8 kW\n\nLess than 10\n\n2010+\n\n0.4\n\n0.4\n\n0.4\n\n8.0\n\n7.5*\n\n(x \u003c 11 bhp)\n\n(0.30)\n\n(0.30)\n\n(0.30)\n\n(6.0)\n\n(5.6*)\n\n8 kW ≤ x \u003c 19 kW\n\nLess than 10\n\n2010+\n\n0.4\n\n0.4\n\n0.4\n\n6.6\n\n7.5*\n\n(11 bhp ≤ x \u003c 25 bhp)\n\n(0.30)\n\n(0.30)\n\n(0.30)\n\n(4.9)\n\n(5.6*)\n\n19 kW ≤ x \u003c 37 kW\n\nLess than 10\n\n2010+\n\n0.3\n\n0.3\n\n0.3\n\n5.5\n\n7.5*\n\n(25 bhp ≤ x \u003c 50 bhp)\n\n(0.22)\n\n(0.22)\n\n(0.22)\n\n(4.1)\n\n(5.6*)\n\n37 kW ≤ x \u003c 75 kW\n\nLess than 10\n\n2010+\n\n0.4\n\n0.4\n\n0.4\n\n5.0\n\n4.7*\n\n(50 bhp ≤ x \u003c 100 bhp)\n\n(0.30)\n\n(0.30)\n\n(0.30)\n\n(3.7)\n\n(3.5*)\n\n75 kW ≤ x \u003c 130 kW\n\nLess than 10\n\n2010+\n\n0.3\n\n0.3\n\n0.3\n\n5.0\n\n4.0*\n\n(100 bhp ≤ x \u003c 174 bhp)\n\n(0.22)\n\n(0.22)\n\n(0.22)\n\n(3.7)\n\n(3.0*)\n\n130 kW ≤ x \u003c 560 kW\n\nLess than 10\n\n2010+\n\n0.2\n\n0.2\n\n0.2\n\n3.5\n\n4.0*\n\n(174 bhp ≤ x \u003c 751 bhp)\n\n(0.15)\n\n(0.15)\n\n(0.15)\n\n(2.6)\n\n(3.0*)\n\n560 kW ≤ x \u003c 2,237 kW\n\nLess than 10\n\n2010+\n\n0.2\n\n0.2\n\n0.2\n\n3.5\n\n6.4*\n\n(751 bhp ≤ x \u003c 3,000 bhp)\n\n(0.15)\n\n(0.15)\n\n(0.15)\n\n(2.6)\n\n(4.8*)\n\nx ≥ 2,237 kW\n\nLess than 10\n\n2010\n\n0.54\n\n0.54\n\n0.54\n\n11.4\n\n1.3\n\n9.2\n\n(x ≥ 3,000 bhp)\n\n(0.40)\n\n(0.40)\n\n(0.40)\n\n(8.5)\n\n(1.0)\n\n(6.9)\n\n2011+\n\n0.2\n\n0.2\n\n0.2\n\n3.5\n\n6.4*\n\n(0.15)\n\n(0.15)\n\n(0.15)\n\n(2.6)\n\n(4.8*)\n\nx ≥ 2,237 kW\n\n10.0 ≤ x \u003c 15.0\n\n2010+\n\n0.27\n\n0.27\n\n0.27\n\n5.0\n\n7.8*\n\n(x ≥ 3,000 bhp)\n\n(0.20)\n\n(0.20)\n\n(0.20)\n\n(3.7)\n\n(5.8*)\n\n*Combined limit for VOC and NOx\n\nB. Emissions of each CI affected unit located in an attainment area during testing shall not exceed the limits specified in Table IV.\n\nTable IV\n\nEmissions Limits for CI Units Located in Attainment Areas\n\nGenerator Size (kW)\n\nDisplacement liters/cylinder\n\nModel Year\n\nEmission Limits\n\n(g/kW-hr (g/bhp-hr)\n\nPM\n\nPM10\n\nPM2.5\n\nCO\n\nVOC\n\nNOx\n\nx \u003c 8 kW\n\nLess than 10\n\n2010+\n\n0.5\n\n0.5\n\n0.5\n\n10.0\n\n9.4*\n\n(x \u003c 11 bhp)\n\n(0.4)\n\n(0.4)\n\n(0.4)\n\n(7.5)\n\n(7.0*)\n\n8 kW ≤ x \u003c 19 kW\n\nLess than 10\n\n2010+\n\n0.5\n\n0.5\n\n0.5\n\n8.3\n\n9.4*\n\n(11 bhp ≤ x \u003c 25 bhp)\n\n(0.4)\n\n(0.4)\n\n(0.4)\n\n(6.2)\n\n(7.0*)\n\n19 kW ≤ x \u003c 37 kW\n\nLess than 10\n\n2010+\n\n0.38\n\n0.38\n\n0.38\n\n6.9\n\n9.4*\n\n(25 bhp ≤ x \u003c 50 bhp)\n\n(0.28)\n\n(0.28)\n\n(0.28)\n\n(5.1)\n\n(7.0*)\n\n37 kW ≤ x \u003c 75 kW\n\nLess than 10\n\n2010+\n\n0.5\n\n0.5\n\n0.5\n\n6.3\n\n5.9*\n\n(50 bhp ≤ x \u003c 100 bhp)\n\n(0.4)\n\n(0.4)\n\n(0.4)\n\n(4.7)\n\n(4.4*)\n\n75 kW ≤ x \u003c 130 kW\n\nLess than 10\n\n2010+\n\n0.38\n\n0.38\n\n0.38\n\n6.3\n\n5.0*\n\n(100 bhp ≤ x \u003c 174 bhp)\n\n(0.28)\n\n(0.28)\n\n(0.28)\n\n(4.7)\n\n(3.7*)\n\n130 kW ≤ x \u003c 560 kW\n\nLess than 10\n\n2010+\n\n0.25\n\n0.25\n\n0.25\n\n4.4\n\n5.0*\n\n(174 bhp ≤ x \u003c 751 bhp)\n\n(0.19)\n\n(0.19)\n\n(0.19)\n\n(3.3)\n\n(3.7*)\n\n560 kW ≤ x \u003c 2,237 kW\n\nLess than 10\n\n2010+\n\n0.25\n\n0.25\n\n0.25\n\n4.4\n\n8.0*\n\n(751 bhp ≤ x \u003c 3,000 bhp)\n\n(0.19)\n\n(0.19)\n\n(0.19)\n\n(3.3)\n\n(6.0*)\n\nx ≥ 2,237 kW\n\nLess than 10\n\n2010\n\n0.68\n\n0.68\n\n0.68\n\n14.3\n\n1.6\n\n11.5\n\n(x ≥ 3,000 bhp)\n\n(0.51)\n\n(0.51)\n\n(0.51)\n\n(10.7)\n\n(1.2)\n\n(8.6)\n\n2011+\n\n0.25\n\n0.25\n\n0.25\n\n4.4\n\n8.0*\n\n(0.19)\n\n(0.19)\n\n(0.19)\n\n(3.3)\n\n(6.0*)\n\nx ≥ 2,237 kW\n\n10.0 ≤ x \u003c 15.0\n\n2010+\n\n0.34\n\n0.34\n\n0.34\n\n6.3\n\n9.8*\n\n(x ≥ 3,000 bhp)\n\n(0.25)\n\n(0.25)\n\n(0.25)\n\n(4.7)\n\n(7.3*)\n\n*Combined limit for VOC and NOx\n\nC. Manufacturer certified emissions of each CI affected unit located in a nonattainment attainment area shall not exceed the limits specified in Table V.\n\nTable V\n\nEmissions Limits for CI Units Located in Nonattainment Areas\n\nGenerator Size (kW)\n\nDisplacement liters/cylinder\n\nModel Year\n\nEmission Limits\n\ng/kW-hr (g/bhp-hr)\n\nPM\n\nPM10\n\nPM2.5\n\nCO\n\nVOC\n\nNOx\n\nx \u003c 8 kW\n\nLess than 10\n\n2010+\n\n0.4\n\n0.4\n\n0.4\n\n8.0\n\n6.4*\n\n(x \u003c 11 bhp)\n\n(0.30)\n\n(0.30)\n\n(0.30)\n\n(6.0)\n\n(4.8*)\n\n8 kW ≤ x \u003c 19 kW\n\nLess than 10\n\n2010+\n\n0.4\n\n0.4\n\n0.4\n\n6.6\n\n6.4*\n\n(11 bhp ≤ x \u003c 25 bhp)\n\n(0.30)\n\n(0.30)\n\n(0.30)\n\n(4.9)\n\n(4.8*)\n\n19 kW ≤ x \u003c 37 kW\n\nLess than 10\n\n2010+\n\n0.3\n\n0.3\n\n0.3\n\n5.5\n\n6.4*\n\n(25 bhp ≤ x \u003c 50 bhp)\n\n(0.22)\n\n(0.22)\n\n(0.22)\n\n(4.1)\n\n(4.8*)\n\n37 kW ≤ x \u003c 75 kW\n\nLess than 10\n\n2010+\n\n0.4\n\n0.4\n\n0.4\n\n5.0\n\n4.7*\n\n(50 bhp ≤ x \u003c 100 bhp)\n\n(0.30)\n\n(0.30)\n\n(0.30)\n\n(3.7)\n\n(3.5*)\n\n75 kW ≤ x \u003c 130 kW\n\nLess than 10\n\n2010+\n\n0.3\n\n0.3\n\n0.3\n\n5.0\n\n4.0*\n\n(100 bhp ≤ x \u003c 174 bhp)\n\n(0.22)\n\n(0.22)\n\n(0.22)\n\n(3.7)\n\n(3.0*)\n\n130 kW ≤ x \u003c 560 kW\n\nLess than 10\n\n2010+\n\n0.2\n\n0.2\n\n0.2\n\n3.5\n\n4.0*\n\n(174 bhp ≤ x \u003c 751 bhp)\n\n(0.15)\n\n(0.15)\n\n(0.15)\n\n(2.6)\n\n(3.0*)\n\n560 kW ≤ x \u003c 2,237 kW\n\nLess than 10\n\n2010+\n\n0.2\n\n0.2\n\n0.2\n\n3.5\n\n6.4*\n\n(751 bhp ≤ x \u003c 3,000 bhp)\n\n(0.15)\n\n(0.15)\n\n(0.15)\n\n(2.6)\n\n(4.8*)\n\nx ≥ 2,237 kW\n\nLess than 10\n\n2010\n\n0.54\n\n0.54\n\n0.54\n\n11.4\n\n1.3\n\n6.4\n\n(x ≥ 3,000 bhp)\n\n(0.40)\n\n(0.40)\n\n(0.40)\n\n(8.5)\n\n(1.0)\n\n(4.8)\n\n2011+\n\n0.2\n\n0.2\n\n0.2\n\n3.5\n\n6.4*\n\n(0.15)\n\n(0.15)\n\n(0.15)\n\n(2.6)\n\n(4.8*)\n\nx ≥ 2,237 kW\n\n10.0 ≤ x \u003c 15.0\n\n2010+\n\n0.27\n\n0.27\n\n0.27\n\n5.0\n\n6.4*\n\n(x ≥ 3,000 bhp)\n\n(0.20)\n\n(0.20)\n\n(0.20)\n\n(3.7)\n\n(4.8*)\n\n*Combined limit for VOC and NOx\n\nD. Emissions from the operation of each CI affected unit located in a nonattainment area during testing shall not exceed the limits specified in Table VI.\n\nTable VI\n\nEmissions Limits During Testing for CI Units Located in Nonattainment Areas\n\nGenerator Size (kW)\n\nDisplacement liters/cylinder\n\nModel Year\n\nEmission Limits\n\ng/kW-hr (g/bhp-hr)\n\nPM\n\nPM10\n\nPM2.5\n\nCO\n\nVOC\n\nNOx\n\nx \u003c 8 kW\n\nLess than 10\n\n2010+\n\n0.5\n\n0.5\n\n0.5\n\n10.0\n\n8.0*\n\n(x \u003c 11 bhp)\n\n(0.4)\n\n(0.4)\n\n(0.4)\n\n(7.5)\n\n(6.0*)\n\n8 kW ≤ x \u003c 19 kW\n\nLess than 10\n\n2010+\n\n0.5\n\n0.5\n\n0.5\n\n8.3\n\n8.0*\n\n(11 bhp ≤ x \u003c 25 bhp)\n\n(0.4)\n\n(0.4)\n\n(0.4)\n\n(6.2)\n\n(6.0*)\n\n19 kW ≤ x \u003c 37 kW\n\nLess than 10\n\n2010+\n\n0.38\n\n0.38\n\n0.38\n\n6.9\n\n8.0*\n\n(25 bhp ≤ x \u003c 50 bhp)\n\n(0.28)\n\n(0.28)\n\n(0.28)\n\n(5.1)\n\n(6.0*)\n\n37 kW ≤ x \u003c 75 kW\n\nLess than 10\n\n2010+\n\n0.5\n\n0.5\n\n0.5\n\n6.3\n\n5.9*\n\n(50 bhp ≤ x \u003c 100 bhp)\n\n(0.4)\n\n(0.4)\n\n(0.4)\n\n(4.7)\n\n(4.4*)\n\n75 kW ≤ x \u003c 130 kW\n\nLess than 10\n\n2010+\n\n0.38\n\n0.38\n\n0.38\n\n6.3\n\n5.0*\n\n(100 bhp ≤ x \u003c 174 bhp)\n\n(0.28)\n\n(0.28)\n\n(0.28)\n\n(4.7)\n\n(3.7*)\n\n130 kW ≤ x \u003c 560 kW\n\nLess than 10\n\n2010+\n\n0.25\n\n0.25\n\n0.25\n\n4.4\n\n5.0*\n\n(174 bhp ≤ x \u003c 751 bhp)\n\n(0.19)\n\n(0.19)\n\n(0.19)\n\n(3.3)\n\n(3.7*)\n\n560 kW ≤ x \u003c 2,237 kW\n\nLess than 10\n\n2010+\n\n0.25\n\n0.25\n\n0.25\n\n4.4\n\n8.0*\n\n(751 bhp ≤ x \u003c 3,000 bhp)\n\n(0.19)\n\n(0.19)\n\n(0.19)\n\n(3.3)\n\n(6.0*)\n\nx ≥ 2,237 kW\n\nLess than 10\n\n2010\n\n0.68\n\n0.68\n\n0.68\n\n14.3\n\n1.6\n\n8.0\n\n(x ≥ 3,000 bhp)\n\n(0.51)\n\n(0.51)\n\n(0.51)\n\n(10.7)\n\n(1.2)\n\n(6.0)\n\n2011+\n\n0.25\n\n0.25\n\n0.25\n\n4.4\n\n8.0*\n\n(0.19)\n\n(0.19)\n\n(0.19)\n\n(3.3)\n\n(6.0*)\n\nx ≥ 2,237 kW\n\n10.0 ≤ x \u003c 15.0\n\n2010+\n\n0.34\n\n0.34\n\n0.34\n\n6.3\n\n8.0*\n\n(x ≥ 3,000 bhp)\n\n(0.25)\n\n(0.25)\n\n(0.25)\n\n(4.7)\n\n(6.0*)\n\n*Combined limit for VOC and NOx\n\nE. Emissions from the operation of each SI affected unit shall not exceed the limits specified in Table VII.\n\nTable VII\n\nEmissions Limits for SI Units\n\nModel Year\n\nEmissions Limits\n\ng/kW-hr (g/bhp-hr)\n\nPM\n\nPM10\n\nPM2.5\n\nCO\n\nVOC\n\nNOx\n\n2010+\n\n0.015\n\n0.015\n\n0.015\n\n5.3\n\n1.3\n\n2.7\n\n(0.011)\n\n(0.011)\n\n(0.011)\n\n(4.0)\n\n(1.0)\n\n(2.0)\n\nInstead of meeting the limits stated above, the owner may  meet the alternative standards below: ( ppmvd  at 15% O2)\n\n540\n\n86\n\n160\n\nF. Combined source-wide emissions from the operation of affected units shall not exceed the limits specified in Table VIII.\n\nTable VIII\n\nCombined Source-Wide Emissions Limits for Affected Units\n\nPollutant\n\nNonattainment Area Emissions (tons/year)\n\nAttainment Area Emissions (tons/year)\n\nPM\n\n1.4\n\n2.3\n\nPM10\n\n1.4\n\n2.3\n\nPM2.5\n\n1.4\n\n2.3\n\nNOX\n\n24.4\n\n39.4\n\nSO2\n\n0.5\n\n0.5\n\nCO\n\n48.0\n\n77.4\n\nVOC\n\n11.8\n\n19.0\n\nG. Visible emissions from each affected unit located in an attainment area shall not exceed 10% opacity except during one six-minute period in any one hour in which visible emissions shall not exceed 20% opacity as determined by Reference Method 9. This condition applies at all times except during startup, shutdown, and malfunction.\n\nH. Visible emissions from each affected unit located in a nonattainment area shall not exceed 5.0% opacity except during one six-minute period in any one hour in which visible emissions shall not exceed 10% opacity as determined by the Reference Method 9. This condition applies at all times except during startup, shutdown, and malfunction.","path":["Title 9. Environment","Agency 5. State Air Pollution Control Board","Chapter 540. Emergency Generator General Permit","Part IV. General Permit Terms and Conditions"],"source_url":"https://law.lis.virginia.gov/admincode/title9/agency5/chapter540/section180/","current_through":"2026 Regular Session (effective July 1, 2026)","vintage":"","retrieved_at":"2026-09-14T04:48:50Z","sha256":"6290719032abdfe05c2cdb27abecb7a148ecbe34790d5755ab489cc7fa88d12a","source_id":"us-va-vac","stale":false,"prev":"us-va/9vac5-540-170","next":"us-va/9vac5-540-190"},"notice":"GroundRules: Original legal text. Not legal advice."}