DOMESTIC WASTEWATER FACILITIES MANUAL

DOMESTIC WASTEWATER FACILITIES MANUAL

A GUIDE FOR THE PREPARATION OF APPLICATIONS, REPORTS AND PLANS BUREAU OF WATER QUALITY PROTECTION



COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION

362-0300-001 10/97

DEPARTMENT OF ENVIRONMENTAL PROTECTION BUREAU OF WATER QUALITY PROTECTION

Document ID: Title: Effective Date: Authority Policy: Purpose: Applicability: Disclaimer:

Page Length: Location: Definitions:

362-0300-001

Domestic Wastewater Facilities Manual

October 1, 1997

Act 537 of 1966, the Pennsylvania Sewage Facilities Act (as amended), and the Clean Streams Law (35 P.S. ??691.1-691.1001) 25 PA Code Chapter 91.

To improve and preserve the purity of the waters of the Commonwealth for the protection of public health, animal and aquatic life and for recreation

To amend and clarify the existing 8/91 guidance regarding the design and construction of domestic wastewater treatment facilities.

This policy amends the 8/91 guidance regarding the design and construction of domestic wastewater treatment facilities.

The policies and procedures outlined in this guidance are intended to supplement existing requirements. Nothing in the policies or procedures shall affect regulatory requirements.

The policies and procedures herein are not an adjudication or a regulation. There is no intent on the part of DEP to give the rules in these policies that weight or deference. This document establishes the framework within which DEP will exercise its administrative discretion in the future. DEP reserves the discretion to deviate from this policy statement if circumstances warrant.

117 Pages

Vol. 33, Tab 33

Sewage Facilities: A system of sewage collection, conveyance, treatment and disposal which will prevent the discharge if untreated adequately treated sewage or other wastes into waters of the Commonwealth or otherwise provide for the safe and sanitary treatment and disposal of sewage.

DOMESTIC WASTEWATER FACILITIES MANUAL DEPARTMENT OF ENVIRONMENTAL PROTECTION

COMMONWEALTH OF PENNSYLVANIA

The attached Domestic Wastewater Facilities Manual has been prepared as a guide for persons responsible for the design and construction of domestic wastewater facilities. It is being sent to you because you might be interested or because you have requested a copy. The manual is also available to download from the DEP web site at: .

The manual may be revised from time to time as the need arises. If you have suggestions for improvement to this manual or desire that future revisions be sent to you, please return this letter to us with the following completed information.

NAME STREET OR ROUTE CITY

This manual could be improved by

STATE ZIP CODE

___ Yes, send me future revisions.

Send to:

Chief, Permits Section Pennsylvania Department of Environmental Protection Bureau of Water Quality Protection RCSOB 11th Floor P.O. Box 8774 Harrisburg, PA 17105-8774

PREFACE

The Commonwealth of Pennsylvania provides for the regulation of wastewater disposal "to preserve and improve the purity of the waters of the Commonwealth for the protection of public health, animal and aquatic life, and for industrial consumption and recreation".

The manual has been prepared as a guide to those persons responsible for the discharge of treated wastewater to waters of the Commonwealth and for the construction of sewers, pump stations and treatment facilities. Parts I and II briefly set forth information regarding the responsibility and the functions of the Department of Environmental Protection (Department) in carrying out the policies and provisions of the Clean Streams Law and the procedure for obtaining permits for discharge and for the construction and operation of treatment facilities.

The Department's policy for conducting technical reviews and approvals of permit applications contained in DEP document #362-2000-007 is applicable to this manual. The policy states that the Department will consider the registered professional engineer whose seal is affixed to facility design documents to be fully responsible for the adequacy of all aspects of the facility design and compliance with the state standards and requirements. The Department approval or issuance of permit does not, in any way, relieve the design engineer of this responsibility.

Part III is a detailed technical guide for consultants and sanitary engineers, containing minimum requirements and limiting factors used by the Bureau of Water Quality Protection in the review of applications for treatment facilities permits. It has been based primarily on the "Recommended Ten States Standards for Wastewater Facilities" adopted by the Great Lakes and Upper Mississippi River Board of State Public Health and Environmental Managers.

The design of wastewater facilities should not be limited by minimum requirements, but must meet the needs of the particular situation. It is not the purpose of this manual to set forth data which can be used without due regard for the requirements of the particular project under design. The judgment of the skilled professional engineer is still required to apply these data. The Department will apply more stringent criteria when, in its judgment, their use is justified. With the foregoing qualifications definitely understood, the Department considers the items set forth in Part III of this manual as generally representative of good engineering practices.

New processes and variations of processes are proposed from time to time. Lack of description or criteria for a process does not suggest a process should not be used, but only that consideration by the Department will be on the basis of information submitted with a specific design. The manual explains the requirements for experimental processes in Section 9.4, entitled "Applications for New Processes". Data on newly proven processes are usually meager, and final standards cannot be adopted immediately or included in a revised manual. Tentative standards for such processes will be available as information is submitted and reviewed. The Department reserves the right to amend this manual if and when necessary to incorporate such new processes. Any such amendments will be posted on the DEP site and incorporated into the manual then reprinted at a later date.

TABLE OF CONTENTS PART I GENERAL INFORMATION

PAGE

1. Acts of the General Assembly of Pennsylvania .................................................. 1 2. The Bureau of Water Quality Protection............................................................ 2 3. Permits ............................................................................................................. 3 4. Approval by Other Agencies ............................................................................. 4

PART II. PROCEDURE FOR OBTAINING A PERMIT

7. Summary of Procedures .................................................................................... 5 8. Preliminary Engineering Conference.................................................................. 5 9. Applications for Wastewater Facilities Permits.................................................. 6

PART III. STANDARDS FOR DOMESTIC WASTEWATER FACILITIES

10. Engineering....................................................................................................... 11 11. Designer's Report ............................................................................................. 11 12. Plans ................................................................................................................ 11 13. Specifications ................................................................................................... 14 14. Revisions to Approved Plans............................................................................. 15 15. Operation During Construction ......................................................................... 15 16. Blasting During Construction............................................................................ 15

20. Design of Sanitary Sewer Systems .................................................................... 15 21. Type of System................................................................................................. 15 22. Design Period ................................................................................................... 16 23. Design Factors.................................................................................................. 16 24. Design Basis..................................................................................................... 16 25. Details of Design and Construction ................................................................... 17 26. Manholes.......................................................................................................... 20 27. Sewers in Relation to Streams ........................................................................... 22 28. Protection of Water Supplies............................................................................. 23 29. Alternative Sewer Systems................................................................................ 24

30. Wastewater Pumping Stations........................................................................... 28 31. General............................................................................................................. 28 32. Wet and Dry Well Pump Stations...................................................................... 28 33. Suction Lift Pump Stations ............................................................................... 31 34. Submersible Pump Stations............................................................................... 32 35. Alarm Systems ................................................................................................. 33 36. Emergency Operation........................................................................................ 33 37. Instructions and Equipment............................................................................... 35 38. Force Mains ..................................................................................................... 35

362-0300-001 / 10/1/97 / Table of Contents / Page i

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