Development Services Glossary

Glossary of Development Service Process Terms

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Term Definition
A
Air Test Results Each sewer segment and associated connections are air tested by plugging the end of each segment and capping the cleanout stacks for each connection. The results of the air test are reported on an air test chart.  For requirements and testing guidelines, please refer to the SEP Standard Specifications Section 02530, 3.8.
Applicant A firm, corporation, municipality, agency, person(s) who owns or develops property and who seeks water or sewer service provided by systems or facilities within the Sanitary District.
As-Built and Service Connection Requirements The purpose of these requirements are to provide direction and assistance in completing service connection finals and sewer and water main as-builts for the WSSC using Commission standards.
B
C
Capital Improvements Program (CIP) WSSC’s Capital Improvements Program is a 6 year projected program of capital improvements for all major water and sewer systems and facilities as defined in Article 29§ 7-101 of the Maryland Annotated Code.
Certificate of Substantial Completion Issued by the Washington Suburban Sanitary Commission when the construction of the project or a specified part thereof is sufficiently completed in accordance with the contract documents so that the project or specified part can be utilized for the purposes for which it is intended.
Compaction Test Report Soil compaction is defined as the method of mechanically increasing the density of soil. 
Construction Services Fee A fee to recover WSSC costs to provide construction inspection services, final project testing, and the processing of the release for service.
Contamination Data Base Search Fee A fee to recover WSSC costs of providing a Contamination data base search for an Applicant.
Corporate Entity A form certfiying that a corporation is organized under the laws of the State of Maryland. It further certifies that this corporation is currently registered to do business in the State of Maryland.
Costing Information Estimate information for front foot benefit charge, as required by law, to repay funds borrowed for construction.
D
Database Search Request A request, made by an Applicant to the WSSC, to perform a database search that will be used to assess the potential for encountering contamination during construction of water and/or sewer services at a property.
Database Summary Sheet
Delegation of Authority Delegation of authority to perform various functions from the Commission to the General Manager and sub-delegated to staff, as set forth in a document and modified from time to time as appropriate.
Development Services Process (DSP) The new process of extending the WSSC water or sewer system. The old process was called DAP (Development Authorization Process).
E
Engineering Agreement A bilateral agreement between the Applicant of a Non-SEP project and WSSC, when WSSC is to provide design services. The agreement enables WSSC to recover any costs incurred if the Applicant decides to not proceed with the construction of the project.
Environmental Questionnaire
Erosion and Sediment Control Permit - Major Request, made to WSSC by the Applicant, to perform Major utility construction as defined by the Washington Suburban Sanitary Commission’s Utility Erosion and Sediment Control Regulations.
Erosion and Sediment Control Permit - Minor Request, made to WSSC by the Applicant, to perform Minor utility construction as defined by the Washington Suburban Sanitary Commission’s Utility Erosion and Sediment Control Regulations.
Extra Review Fee for Additional Reviews of Unsigned Drawings To recover WSSC costs of reviewing design drawings more than two times. These are a result of inadequate submissions or changes in the drawings. The fee would not be charged if the changes are made as a result of a WSSC requested modification to the drawings.
Extra Review Fee for Minor Revisions A fee to recover WSSC costs of reviewing changes to approved design drawings.
Extra Review Fee for Splitting Signed Drawings A fee to recover WSSC costs of reviewing and processing the splitting of signed drawings into two or more separate projects.
F
Facilities Water and sewage pumping stations, storage structures, and treatment facilities and their appurtenances.
Feasibility Review Fee For certain SEP projects, WSSC will review a Feasibility Study prior to the initiation of the design phase. The fee will recover WSSC costs for the review.
Feasibility Study Preparation Fee For Non-SEP projects, this fee will cover the cost of WSSC’s preparation of the Feasibility Review Study, which is similar to the Authorization Report previously prepared under the DAP.
Final Sewer Inspection Report  This report is a checklist of 25 items that are inspected on every main line extension project prior to substantial completion.
Final Plan Approval Letter A letter approving construction plans for water and sewer service extension to a development site. This letter is sent from the WSSC to the Applicant stating the plans have been approved and the "Design" phase of the SEP process is complete.
Force Main Test Results When constructing sewer main pipe which will be used to transmit raw sewage under pressure a Force Main test is conducted prior to connection to the existing sewer system. Requirements on how to conduct this test are provided in the WSSC STANDARD SPECIFICATIONS, SECTION 02530, SANITARY SEWER SYSTEM, PART 3 EXECUTION under 3.8 FIELD TESTING. When Pressure test is complete provide: Copy of pressure readings from pressure gage provided by Contractor, pressure calculation sheet and water meter readings on forms provided by the Commission. Note: WSSC will provide all information on pressure calculation sheet.
G
Grading Certification A form submitted to the WSSC certifing that the streets and
rights-of-way are on grade, as defined on the Project Drawings.
H
Hazen-Williams Formula
High/Low Domestic Pressures Instructions that will enable an engineer to obtain a general idea if a particular site will have adequate fireflow pressures to serve a proposed development.
HPA Complexity Ratings Defines the differences between BasicModerate and Complex Hydraulic Planning Analysis Projects.
House Connection Certification A form submitted to the WSSC certifing the accuracy and quantity of connections based on field measurements.
Hydraulic Grades
Hydraulic Information Available from WSSC Instructions provided for those who design fire sprinkler systems. It describes hydraulic information that may help the designer obtain a starting point for hydraulic calculations. Use of the sheet will help reduce the possibility of incorrectly interpreting hydraulic data received from WSSC.
Hydraulics Modeling Fee A fee to recover the costs of WSSC modeling the water and sewer systems for a development. There will not be a revision fee. If the Applicant changes what was originally sized, the new modeling would be subject to the entire fee. If the resizing is for a multipart development and several parts have already been completed, the completed parts would be considered existing for the calculation of the new fee.
Hydraulic Planning Analysis -Amendment For all SEP projects, WSSC will review planned alignments and perform a hydraulic review prior to the initiation of the design phase.
Hydraulic Planning Analysis -Basic A basic project includes:
 
  • 3 parts or less.
  • BSF less than 100,000 gpd.
Hydraulic Planning Analysis -Complex

A complex project includes one or more of the following items:
 

  • 12 or more parts
  • Facility projects (System pressure reducing valve, System pressure relief valve, Major water transmission main, Elevated storage tank, Water pumping station, Wastewater pumping station, Force main).
  • High domestic water pressures greater than 130 psi, necessitating the creation of a new water pressure zone.
  • Interjurisdictional issues.
  • Unlined water mains with 1500 gpm or greater fireflow.
  • Large grinder pump systems (20 or more units), or a small system that connects into an existing grinder pump system.
  • Sewer surcharge evaluation and calculations.
  • Unusual service requirements that the WSSC deems will make the project a complex project. For example, a project with a downstream sewer running through parkland, and sewer service requires a facility plan. Another example could be a large project that requires a major water system enhancement to provide the required flows.
Hydraulic Planning Analysis -Moderate A moderate project includes one or more of the following items:
 
  • 4-11 parts.
  • Hydraulic modeling that would require the use of a computer pipe network model.
  • Small grinder pump systems (less than 20 units).
  • CIP projects.
  • Interpreting wastewater flow meter data.
  • Unlined water mains with 1000 gpm fireflow.
  • Extra-depth sewer (15 feet deep or greater). Profiles required.
  • Onsite takeovers.
  • Interpreting fire flow test results.
  • BSF greater than or equal to 100,000 gpd (necessitates sewer modeling by the Planning Group).
I
J
K
L
Labor and Material Bond A Contractor’s bond in which a surety guarantees to the owner that the Contractor will pay for labor and materials used in the performance of the contract. The claimants under the bond are defined as those having direct contracts with the contractor. See Art 21 SECURITY of the SEP General Conditions for Bond requirements.
Letter of Findings This correspondence will state all pertinent information for the proposed development and specifies WSSC contact’s name, phone number and job number, and will set forth any conditions that must be met prior to service being provided. Information will include the availability of Water and Sewer, the need for a “Feasibility Review” for SEP projects, and the need to obtain a “Planning Assistance Package” required prior to Phase 2.
M
Maintenance Bond A security payable to WSSC as a guarantee of funds for the correction of any construction and material deficiencies found during the life of the bond. The security shall be in an amount equal to one half the amount of the Performance Security. The security may be provided in the form of a certified check, a cash deposit, a certificate of deposit, an irrevocable letter of credit from a financial institution acceptable to WSSC and in a form acceptable to WSSC, a bond executed by a surety company authorized to do business in the State of Maryland, or any other form of security acceptable to WSSC.
Major Project Projects for the construction of larger diameter water and/or sewer mains, force mains, and/or facilities included in the CIP as defined in Article 29§ 7-101of the Maryland Annotated Code.
Manning Formula
Memorandum of Understanding (MOU) A bilateral agreement between the Applicant and WSSC for the design and construction of water and/or sewer facilities. The MOU is required for the applicant to construct facilities that WSSC will, upon satisfactory completion, take over for maintenance and operation.
Modifications Booklet A booklet compiling all changes to the General Conditions and Standard Specifications, Standard Detail, and applicable Special Provisions that pertain to the construction of SEP projects.
N
Non-SEP Job A booklet compiling all changes to the General Conditions and Standard Specifications, Standard Detail, and applicable Special Provisions that pertain to the construction of SEP projects.
O
Offsite Extensions Water or sewer mains constructed beyond the limits of the Applicant’s property.
Outstanding Conditions A letter of Outstanding Conditions usually is provided at the end of the "Design" phase of the SEP process. It lists all items from the System Extension Permit Developer Information Submission Checklist that have yet to be received by the WSSC. A Certification of Substantial Completion will not be given until all of the Outstanding Conditions have been met by the Applicant.
P
Partial Release of Liens A form acceptable to WSSC, signed by the utility contractor and the Applicant and notarized, stating that the utility contractor, and all subcontractors and suppliers, have been paid for the specified portion of the total project.
Partial Release for Service Fee A fee to recover WSSC costs of processing a release of a portion of a project prior to final Release for Service.
Partial Release Request Request, made to WSSC by the Applicant, to release for service a portion of the complete project.
Payment Security A security payable to WSSC to guarantee payment to the utility contractor, subcontractors, and suppliers that provide labor, materials, or construction equipment for the construction of the subdivision lines. This security shall be in an amount equal to the amount of the performance security. The security may be provided in the form of a certified check, a cash deposit, a certificate of deposit, an irrevocable letter of credit from a financial institution acceptable to WSSC and in a form acceptable to WSSC, a bond executed by a surety company authorized to do business in the State of Maryland, or any other form of security acceptable to WSSC.
Performance Security A security payable to WSSC to guarantee completion of construction of subdivision lines. This security shall be payable to WSSC in an amount designated by WSSC, taking into account potential cost escalation. The security may be provided in the form of a certified check, a cash deposit, a certificate of deposit, an irrevocable letter of credit from a financial institution acceptable to WSSC and in a form acceptable to WSSC, a bond executed by a surety company authorized to do business in the State of Maryland, or any other form of security acceptable to WSSC.
Physical Acceptance Date In instances where Substantial Completion is issued with outstanding punch list items, WSSC will establish the Physical Acceptance Date once all items have been completed. This date will signify that all contractual requirements at the site have been met.
Planning Assistance Package Fee A fee for the preparation of an information package on all existing WSSC water and sewer systems in the vicinity of the project.
Pressure Sewer Test Results On 4 inch and smaller PVC pressure sewer a pressure test is conducted prior to connection to existing sewer system. Requirements on how to conduct this test are provided in the WSSC STANDARD SPECIFICATIONS, SECTION 02533, PRESSURE SEWER SYSTEM, PART 3 EXECUTION under 3.7 FIELD TESTING. When Pressure test is complete provide: Copy of pressure readings from pressure gage provided by Contractor, pressure calculation sheet and water meter readings on forms provided by the Commission. Note: WSSC will provide all information on pressure calculation sheet.
Q
R
Release of Liens A form acceptable to WSSC, signed by the utility contractor and the Applicant and notarized, stating that the utility contractor, and all subcontractors and suppliers, have been paid.
Release for Service Request A form, filled out by the Applicant, requesting that the WSSC take over servicing and maintenance of the development project site water and sewer extensions.
Request for Permit Numbers A request, made by the Applicant to the WSSC, for issuance of permit numbers for proposed installation of water and/or sewer connections under a contract.
Re-Test Fee A fee to recover WSSC costs when additional project testing is needed as a result of initial testing failures.
Review for System Integrity Fee A fee to recover WSSC costs incurred for the preliminary and final review and approval of the Applicant’s design submission.
S
Sediment Control Permit Permit that allows for ground disturbance in support of water and sewer development. This permit is based on the erosion and sedminet control plan submitted by the Applicant.
SEP Design Checklist The SEP Design Checklist serves as a guide for engineers in the preparation and review of water and sewer construction drawings.
Service Category Status Service Category Status pertains the the Maryland National Park & Planning Commissions (M-NCPPC) 10 Year Plan. The 10 Year plan defines categories (1-6) for every property in the M-NCPPC control area. In general, the higher the category number, the further off (time/physical distance) are planned connections to Water and Sewer service.
Service Connection Finals A WSSC generated form (As-Built Service Connection Certification) to be completed, certified, and submitted by the Applicant’s Engineer providing as-built information for all water and sewer house connections installed on Systems Extension Permit Projects.
Sewer As-Built Plan drawings of sewer as they were built on site. These drawings must be sealed by a Registered Surveyor and/or Engineer.
Sewer As-Built Worksheet The purpose of the Sewer as-built is for the location of  manholes for the WSSC Utility Services Team and Infrastructure Systems Group as well as any in house survey jobs.
Stake-Out Record Notes that include line, grade, cut sheets, and the like, necessary for the construction of Commission facilities.
Substantial Completion The point in the construction phase when a project is ready to be used for its intended purpose. All testing is complete and the system or facility is ready to be placed into service.
System Development Charge (SDC) Credit Costs paid by the Applicant to construct WSSC systems or facilities may entitle the Applicant to a credit or reimbursement of the System Development Charges imposed by WSSC for properties served by the project. The System Development Charge Credit Agreement (SDCCA) shall indicate how such credits towards SDC will be determined. See Standard Procedure CUS 94-03.
System Extension Permit (SEP) A WSSC-issued permit for extensions to WSSC System. Replaces the MOU for systems projects. The permit is required for the applicant to build water and sewer systems that WSSC will, upon satisfactory completion, take over for maintenance and operation.
System Integrity Review Checklist A WSSC generated form (Information Submission Checklist for System Integrity Review) to be submitted by the Applicant’s Engineer to the  Development Service Group at the Phase 2 step for design review.
Systems Water and sewer pipes.
T
Television Report Reports based on closed circuit television inspection of sewer mains and laterals.
Transfer of Ownership Fee A fee to recover WSSC costs of processing a change in ownership of a project prior to the issuance of the SEP.
Turnkey Project A project where the Applicant will design and construct all systems, facilities, or connections in accordance with WSSC standards and technical criteria, and will transfer the same to WSSC for operation and maintenance when the construction and testing has been completed to the satisfaction of WSSC and all conditions set forth in the SEP or MOU are met.
U
Unit Costs A spreadsheet for calculating standard unit costs of utility construction in the determination of SEP Construction Security.
V
W
Water Main Test Results Test results on any water main installed by the Applicant’s Contractor. New water mains cannot be connected to the WSSC water system until the following tests have been performed and meet the requirements as set forth in the WSSC General Conditions and Standard Specifications: Pressure/Leakage Hydrostatic Tests, Bacterioliogical Test, and Water Pipe Continuity Test on PVC water main.
Water or Sewer Availability Confirmation A form that confirms approval by the WSSC of water and/or sewer extension plan for the property or properties. It alos serves to certify that the WSSC water and/or sewer service connections will be provided subject to compliance with the conditions of the plan approval and System Extension Permit.
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