{"data":{"id":"us/40-cfr-appendix-xi-to-part-86","jurisdiction":"us","citation":"40 CFR Appendix XI to Part 86","heading":"Appendix XI to Part 86—Sampling Plans for Selective Enforcement Auditing of Light-Duty Vehicles","body":"40% AQL\nTable 1—Sampling Plan Code Letter\nAnnual sales of configuration Code letter\n50-99 A\n100-299 B\n300-499 C\n500 or greater D\nTable 2—Sampling Plan for Code Letter “A” 40% AQL\n[Sample inspection criteria]\nStage Pass No. Fail No.\n1 (1) (2)\n2 (1) (2)\n3 (1) (2)\n4 0 (2)\n5 0 (2)\n6 1 6\n7 1 7\n8 2 7\n9 2 8\n10 3 8\n11 3 9\n12 4 9\n13 5 10\n14 5 10\n15 6 11\n16 6 11\n17 7 12\n18 7 12\n19 8 13\n20 8 13\n21 9 14\n22 10 14\n23 10 15\n24 11 15\n25 11 16\n26 12 16\n27 12 17\n28 13 17\n29 14 17\n30 16 17\n1 Test sample passing not permitted at this stage.\n2 Test sample failure not permitted at this stage.\nTable 3—Sampling Plan for Code Letter “B” 40% AQL\n[Sample inspection criteria]\nStage Pass No. Fail No.\n1 (1) (2)\n2 (1) (2)\n3 (1) (2)\n4 (1) (2)\n5 0 (2)\n6 1 6\n7 1 7\n8 2 7\n9 2 8\n10 3 8\n11 3 9\n12 4 9\n13 4 10\n14 5 10\n15 5 11\n16 6 12\n17 6 12\n18 7 13\n19 8 13\n20 8 14\n21 9 14\n22 9 15\n23 10 15\n24 10 16\n25 11 16\n26 11 17\n27 12 17\n28 12 18\n29 13 18\n30 13 19\n31 14 19\n32 14 20\n33 15 20\n34 16 21\n35 16 21\n36 17 22\n37 17 22\n38 18 22\n39 18 22\n40 21 22\n1 Test sample passing not permitted at this stage.\n2 Test sample failure not permitted at this stage.\nTable 4—Sampling Plan for Code Letter “C” 40% AQL\n[Sample inspection criteria]\nStage Pass No. Fail No.\n1 (1 ) (2 )\n2 (1 ) (2 )\n3 (1 ) (2 )\n4 (1 ) (2 )\n5 0 (2 )\n6 0 6\n7 1 7\n8 2 7\n9 2 8\n10 3 9\n11 3 9\n12 4 10\n13 4 10\n14 5 11\n15 5 11\n16 6 12\n17 6 12\n18 7 13\n19 7 13\n20 8 14\n21 8 14\n22 9 15\n23 10 15\n24 10 16\n25 11 16\n26 11 17\n27 12 17\n28 12 18\n29 13 18\n30 13 19\n31 14 19\n32 14 20\n33 15 20\n34 15 21\n35 16 21\n36 16 22\n37 17 22\n38 18 23\n39 18 23\n40 19 24\n41 19 24\n42 20 25\n43 20 25\n44 21 26\n45 21 27\n46 22 27\n47 22 27\n48 23 27\n49 23 27\n50 26 27\n1 Test sample passing not permitted at this stage.\n2 Test sample failure not permitted at this stage.\nTable 5—Sampling Plan for Code Letter “D” 40% AQL\n[Sample inspection criteria]\nStage Pass No. Fail No.\n1 (1 ) (2 )\n2 (1 ) (2 )\n3 (1 ) (2 )\n4 (1 ) (2 )\n5 0 (2 )\n6 0 6\n7 1 7\n8 2 8\n9 2 8\n10 3 9\n11 3 9\n12 4 10\n13 4 10\n14 5 11\n15 5 11\n16 6 12\n17 6 12\n18 7 13\n19 7 13\n20 8 14\n21 8 14\n22 9 15\n23 9 15\n24 10 16\n25 11 16\n26 11 17\n27 12 17\n28 12 18\n29 13 19\n30 13 19\n31 14 20\n32 14 20\n33 15 21\n34 15 21\n35 16 22\n36 16 22\n37 17 23\n38 17 23\n39 18 24\n40 18 24\n41 19 25\n42 19 26\n43 20 26\n44 21 27\n45 21 27\n46 22 28\n47 22 28\n48 23 29\n49 23 29\n50 24 30\n51 24 30\n52 25 31\n53 25 31\n54 26 32\n55 26 32\n56 27 33\n57 27 33\n58 28 33\n59 28 33\n60 32 33\n1 Test sample passing not permitted at this stage.\n2 Test sample failure not permitted at this stage.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 86—CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"49f06dfbf12bb7c5cc41e643da369ab719fdf1db3ccb591cd4a568a245c6e970","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-appendix-x-to-part-86","next":"us/40-cfr-appendix-xii-to-part-86"},"notice":"GroundRules: Original legal text. Not legal advice."}