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References from PA DEP
Resource links
DEP Wastewater Management
Chapter 73 - Standards for onlot sewage treatment facilities
Onlot alternate technology listings
Guidance documents
Alternate Systems Guidance - February 2004
Experimental Systems Guidance - January 2003
At-grade Guidance - March 2016
Shallow Limiting Zone At-grade Guidance - March 2016
Steep Slope Elevated Sand Mound Guidance - February 2014