HomeMy WebLinkAboutScanned on 11/09/2012 at 09:11:24 WRIGHT-PIERCE Water
Engineering a Better Environment Wastewater
Infrastructure
November 6, 2012
W-P Project No. MCI12
Mr. C. Frederick Shaw, Superintendent Pollution Control
Town Hall
1540 Sullivan Avenue
South Windsor, CT 06074
Subject: Town of South Windsor, CT—GIS Mapping
Proposal to Assist in Locating Missing Sanitary Sewer Mains
Dear Mr. Shaw:
As discussed at our October 17, 2012 meeting, we are pleased to provide you with our proposal to assist
the Town of South Windsor in completing a digitized base map for sanitary sewer mainlines within the
sewer collection system. It is our understanding that there is currently 10 miles +/- of known sewer
main which the Town is missing digital information on. The approximate locations of these are shown
on the attached maps provided by the South Windsor GIS Department. It is also our understanding that
there are likely several other sections of sewer main that are unknown in addition to the 10 miles
currently identified.
The ultimate goal of this work is to develop a complete and accurate digital map of the entire sewer
collection system to assist in general operations and maintenance, sewer line inspection and cleaning,
and the ability to conduct hydraulic modeling within the system. It is understood that it will take several
phases to generate such mapping, with the first phase focusing on collecting information on the missing
sections of sewer main only.
Proposed Scope of Services
This letter presents our proposed scope and budget to conduct the following tasks to assist the Town in
this initial effort with the understanding that subsequent phases will include additional data collection on
the sewer mains already in the Towns GIS database:
1. Consult with the CT DEEP to determine if this work would be eligible under Clean Water
Funding. It determined eligible, Wright-Piece would complete the necessary paperwork on
behalf of the town. If determined ineligible, it is assumed that this work will be funded by the
Town.
2. Meet with the Towns Pollution Control, GIS, Engineering and Public Works departments to
review the software we own and propose to utilize on this project (PIPELOGIX —
www.pipelo ix.com) to ensure it meets the needs of the Town and is compatible with the
Offices Throughout New England I www.wright-pierce.com 169 Main Street, 700 Plaza Middlesex
Middletown, CT 06457 USA
Phone 860.343.8297 1 Fax 860.343.9504
C. Frederick Shaw
November 6, 2012 ~�
Page 2 of 2
Town's current GIS system. At a minimum, it is anticipated that the database will include fields
for the following:
o GPS Coordinates (x,y,z) of each manhole at the cover elevation(Assume 200 manholes)
o Sewer manhole invert elevations (Assume 200 manholes)
o Sewer pipe size and material (To be determined topside with a"Pipe Mic II")
o Sewer Manhole Inspection Form with NAASCO MACP Coding
3. Conduct field surveys to locate missing manholes for GPS sub-centimeter location in the x,y,z
plane. It is anticipated that the GPS work will be subcontracted out to Martinez Couch &
Associates, LLC of Rocky Hill, CT who owns the necessary equipment for the sub-centimeter
GPS work with assistance from Wright-Pierce employees.
4. Open all GPS located manholes for the remaining data collection. It is anticipated that two
Wright-Pierce employees will lead this effort but assistance will be required from Town staff at
various intervals depending upon accessibility to the manholes (buried), traffic control, and the
general knowledge of the system that the Town possesses. Please note that inverts will be
measured manually and then entered into the database to correlate with the GPS coordinates.
5. Provide the town with the finalized electronic database from PIPELOGIX for incorporation into
their existing GIS system.
6. Develop a scope and fee for the next phase, if desired by the Town.
Proposed Fee
Wright-Pierce proposes to complete the above scope of work on a time-charge basis with a not-to-
exceed fee of $ 40,900.00 without written authorization from the Town of South Windsor. This fee
includes the costs associated with data collection of the missing 10 miles of sewer main including
subcontracted surveyor costs to determine invert elevations. It does not include any data collection for
sewer main piping in addition to the 10 miles identified on the attached mapping. A copy of our
estimated engineering fee and associated staff-hours and subcontractor costs to complete this work is
enclosed for your review.
If the scope and fee presented in this letter are acceptable, we can prepare a draft Agreement for review
and approval by the Town. Should you have any questions or desire additional information, please call
Dennis Dievert or me at 860-343-8297.
Very truly yours,
WRIGHT-PIERCE
John W Braccio, P.E.
Vice President
cc: Michael Gantick, P.E., Director of Public Works
Town of South Windsor, CT
Phase I GIS Mapping
Field Location Work
Activity CHARGE MANAGER ENGINEER I ENGINEER II TECHNICIAN Total Labor Cost
Project Management 1 4 $739.20
Meet/Fine Tune Pipelogix 4 16 $2,254.56
Locate MH's for GPS Location 2 40 40 8 $8,272.88
Coordinate GPS Locations 4 40 $4,225.76
Open Each Manhole/Inspect 64 64 $11,432.96
Generate Database Deliverable 1 4 40 8 $5,297.60
Totals 2 18 184 104 32 $32,222.96
Direct Costs Units Unit Cost Estimated Cost
Survey Subconsultant (X,Y,Z GPS Location) 1 $ 6,500.00 $6,825
Pipelogix Use of License per Manhole 200 $ 2.00 $400
Mileage 700 $ 0.55 $385
Miscellaneous Field Equipment 1 $ 1,000.00 $1,000
Photocopies/Printing 100 $ 1.00 $100
Total $8,710
Total Cost $40,900.00
` Blank page Page of
PI —MIC H (Pronounced"PIPE M|KE") Made |n the USA
Home Measure pipe inverts and sizes fast, easy & accurate
~Measurements are more accurate because you are measuring
Products
with vertical plumb rod.
^Made for Crain 2s'SVR' USL rods and our new double sided
PiPe'm|oxrod.
----~�---- ^Made o,lightweight(two pounds)non rusting aircraft aluminium.
AMINzamoL ^Nn tools needed in attach u`rod.
~S|igea on and off inseconds.
»erzuuzvbu ,
New round foot design slices through ma0eria|atbnxomnfnipo
muu�bu and insures accurate invert and pipe diameter measurement.
y1ellsiuudiea oy pulling u pin in just seconds you can go from zero
m 1ftve�ioa|oM�e+fo,�|oamnoovndormd
xwunu���udux� � .
Markers
E��� "We have been using the Pipe-Mic 11 for over 4 years and have found it to be an field note sheet.
R��
invaluable tool.We initially purchased it for a contract with a local sanitation district. This helpful field note sheet
Accurate invert elevations and pipe sizes were needed for sewer force mains,trunk
All of these measurements were obtained using the Pipe-Mic.including manhole field measurements with the
invert elevations that exceeded 25 feet:it would have been impossible to get accurate PIPE-MICII.
pipe sizes and inverts at the depth using the"old method",The Pipe-Mic has not only
quickly and safely.Thank you for such a wonderful product."Jason Moore-Proactive
Engineering Consultants,Inc. Example field note sheet.
DmR,-r-Lave
ttj
&�ao�ou�bu�n
To use:
° You can direct read the depth of the invert when the pin is set el"zero offset"nn the P|PE-M|C||.
° !f you need clearance under rod tn measurement en invert move the pin to^1'vertioa|offset hole"
° |f you need clearance under rod and a pipe that is hard tnreach youcan add a1 ft.extension.
(1 ft.extension sold separately)Move pin to"1'wmrtiva|ofsetw/1'extenaion^hole.
To size apipe:
The foot is 0.33 or 4".Take the reading from the rim,pull up and take reading plus 0.33 and that is
your pipe size.
New Double Sided P|PE'[W|C || Rod Example:
~Made exclusively for the P|PE'M|CU 4^Pipe=0.00movement
°Reduces multiple setups when using aTotal =7 p 6" Pipe=0.17
Station nr Auto level, 8" eipv=0.33
°Printed in tenths on front& back ofrod. - 10"ov,~0.50
4 D" n/p, 0.67
Part#17251O 4
PIPE-N|CUDouble Sided Rod 25' 10th '
List$246.00
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