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Hydraulic Planning Analysis Request Instructions for Sketches

  • The project is to be shown on a sketch at 1" = 200' scale. 
     
  • The base for the sketch shall be a black line print that accurately reflects the applicant's and adjacent properties as well as the public way. Show all existing WSSC water and sewer mains on that sheet. The sketch is to be one continuous sketch -not in sections or on multiple pages. Off-site extensions over 2000 feet in length may be shown on a separate sketch with reduced scale. 
     
  • Relevant field observations that impact main alignment should also be shown (including, but not limited to. streams, steep slopes, Marlboro clay, and tree save areas).
     
  • If the WSSC project number is known, it should be included on the sketch. If the project number is not known, a space for the number should be provided in the lower right hand corner of the sketch. 
     
  • Show spot elevations of interest (intersections, high points, low points, and ends of proposed mains). On one copy of the sketch should show contours for areas with significant re-grading or other relevant topological features.
     
  • On the original submission for projects with multiple parts, the parts should be numbered in order of construction sequence. Parts should be delineated and numbered so that any single part is never dependent on a higher-numbered part for sewer. For subsequent submissions of multiple part jobs, label part numbers consistent with previous reviews and WSSC job numbers for parts that have been assigned WSSC job numbers. Should a part be split into 2 or more parts, designate these new parts as 2A, 2B, etc. 
     
  • The date the sketch is prepared. 
     
  • Delineate deep sewer (provide profiles as required). 
     
  • The sketch shall show all the information identified in the Sketch Color Coding list.  

Sketch Color Coding
Description   Color  Symbol 
Applicant's property and/or parcel
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 Yellow (outline)
 
Existing water and sewer mains from which proposed extensions will be made, with sizes and contract/job numbers. This criterion pertains to parts of multi-part jobs already built by applicant as well as existing WSSC mains.
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 Black
 
Proposed water extensions (and if previously reviewed by WSSC, line sizes).
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 Blue
 
Change Description
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 Change Color
 
Water loops.
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 Blue (dashed)
 
Proposed sewer extensions, manholes, sizes (if previously reviewed by WSSC), and flow direction arrows.
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 Red
 
Proposed pressure sewer extensions (Label "PS" or force mains (Label "FM") and sizes (if previously reviewed by WSSC).
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 Red
 
Capital Improvements Program Project Numbers.
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 Black
abc
Dependent projects with project number and date of letter of findings.
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 Black
abc
Existing houses or buildings abutting proposed construction
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 Black (filled)
 
Proposed buildings: The line type should be narrower rather than thicker than that used for sewer.
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 Red (outline)
 
Boundaries of government, park, and Board of Education Property.
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 Green (outline)
 
Surrounding property, abutting roads and street names.
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 Black
 
Underline of street names.
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 Red
 
Existing paving.
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 Green (filled)
 
Existing and proposed private on-site water and sewer systems.
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 Green
 
Proposed water connections to be built under SEP to existing water line.
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 Orange
 
Proposed sewer connections to be built under SEP to existing sewer line.
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 Brown
 
If the proposed development is to be divided into parts for construction, the parts should be clearly labeled and delineated using various colors of preference, but distinct from those listed in this Sketch Color Coding table. The proposed development for each part should be labeled (number of units, sq. footage etc).
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 Various colors  
Show the project name, WSSC 200 -foot sheet number(s) and the scale (usually 1 inch=200 feet as required) in the lower right hand corner.
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 Black
abc
Show a north arrow and a graphic scale.
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 Black
 
Existing and proposed Rights-of-way and permits required.
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 Black
 
Mini-Basin boundaries through property and corresponding number (Provided by WSSC during review).
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 Black
 
Pressure zone boundaries through property and corresponding number (Provided by WSSC during review).
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 Black
 
Show 1,000 foot grid intervals corresponding to WSSC 200-foot sheet quadrants.
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 Black
 


Sketch-Color Coded Instructions Updated: October 13, 2004

 
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