Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 811 - STANDARDS FOR NEW SOLID WASTE LANDFILLS
Subpart E - CONSTRUCTION QUALITY ASSURANCE PROGRAMS
Section 811.509 - Leachate Collection Systems

a) The CQA officer shall exercise professional judgement to verify that pipe sizes, material, perforations, placement and pipe grades are in accordance with the design.

b) The CQA officer shall exercise professional judgement to certify that all soil materials used for the drainage blanket and graded filters meet the required size and gradation specifications in the design plan and are placed in accordance with the design plans.

c) The CQA officer shall inspect all prefabricated structures for conformity with design specifications and for defective manufacturing.