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Local Assistance Procedures Manual Exhibit 16-R Sampling and Testing Frequency SUBGRADE (DISTURBED BASEMENT SOIL) OR EMBANKMENT Quality Characteristic Test Method Minimum Sampling and Testing Frequency Location/Time of Sampling Maximum Density and Relative Compaction CT 216/CT 231 1 Min. Test per 5000 sq ft under vehicle traveled way and shoulder 1 Min. Test Per 300 linear foot under sidewalk Random locations as determined by the Engineer in place after compaction. AGGREGATE BASES AND SUBBASES, IMPORTED BORROW Quality Characteristic Test Method Minimum Sampling and Testing Frequency Location/Time of Sampling Sample from site stockpile/plant prior to placement. Sieve Analysis CT 202 1 Min. Test Per Material Source R-Value CT 301 Sand Equivalent CT 217 Maximum Density and Relative Compaction CT 216/CT 231 1 Min. Test per 5000 sq ft Random locations as determined by the Engineer in place after compaction. STRUCTURE BACKFILL, SELECT BACKFILL Quality Characteristic Test Method Minimum Sampling and Testing Frequency Location/Time of Sampling Sieve Analysis CT 202 1 Min. Test Per Material Source Sample from site stockpile/plant prior to placement R-Value CT 301 Sand Equivalent CT 217 Maximum Density and Relative Compaction CT 216/CT 231 1 Min. Test Per 2 Vertical Lifts of Placement Random locations as determined by the Engineer in place after compaction. January 2018 Page 2 of 3   <br />  <br />City Council 21 – 42 9/16/2025