SEWAGE DEPARTMENT TRAINING PROGRAM
How to Build an At-Grade Sewage Disposal System
Aggregate used in the absorption area must meet Pennsylvania Department of Transportation specifications, publication #408 (1994) section 703. The size and grading shall meet AASHTO No. 57. All aggregate must be taken from a PennDOT certified stockpile and shall be of the Type B quality requirements.
[See 25 Pa. Code § 73.51]
Certification slips will be required to be submitted to the SEO.