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Director's Orders 83 is the governing document that describes the Public Health Program expectations of Park Managers. The requirements outlined in DO 83 are in keeping with the requirements as set forth in the Management Policies of the National Park Service, GPRAct requirements and the NPS Strategic Plan (large file). In addition to the Director's Order, there may be additional requirements imposed by the Primacy Agency, if applicable.

There are two reference manuals that provide the "how tos" of wastewater management and disposal. RM83(B1)-Wastewater Systems is the basic guidance for septic tank and drainfield management. RM83(B2)-In-Depth Design and Maintenance of Vault Toilets, published by The Forest Service, U.S. Department of Agriculture, is the guidelines used throughout the National Park Service for vault toilet management.

All primacy agency regulated wastewater systems (e.g., systems that require an NPDES permit, must conform to the requirements imposed through the permitting process.

Recommended Training

Plumbing and Drainage Institute (PDI) Guide to Grease Interceptors

NEW! EPA Wastewater Technology Factsheets

General Information

HTML - Online, PDF - Printer Friendly, Word - Modifiable, PPT - Powerpoint, TRI - Trifold PDF Brouchure
Reference Manuals Septic Tank Log
83B1 - General:
PDF
General:
PDF
83B2 - Vault Toilet Manual:
PDF SST Installation Guide
83B3 - Cleaning Recreation Sites:
PDF
General:
PDF
83B4 - Sewage Spill Response:
PDF Toilet Odors
83F - Backcountry:
PDF
General:
PDF
Composting Toilet Decision Tree
Do Additives Work?:
PDF
General:
PDF Vent Stack Maintenance
Laboratory
General:
PDF
Generic Manual:
Word | PDF Wastewater System Data Form
BOD:
Word | PDF
General:
Word | PDF
Solids:
Word | PDF    
Multi-tube Fermentation:
Word | PDF  
Security    
EPA Threat Levels:
PDF  
DHS - Threat Reporting:
PDF    
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