HomeMy Public PortalAbout2021-763 Lighthouse Area Sewer - Addendum 2 Attachment B.pdfThis map was created using geothinQ | www.geothinQ.com | Mapping Smart Land Decisions
TYBEE ISLAND
DIVISION III
09/26/2021
Good
Fair
Poor
Unknown
Gravity Main
APPROX. 16 LF OF 10" DIA.
SEWER (PVC -SDR 26) @
0.28%
APPROX. 111 LF OF 10" DIA.
SEWER (PVC -SDR 26) @
0.28%
APPROX. 223 LF OF 10" DIA.
SEWER (PVC -SDR 26) @
0.28%
APPROX. 235 LF OF 10" DIA.
SEWER (PVC -SDR 26) @
0.28%
APPROX. 14 LF OF 10" DIA.
SEWER (PVC -SDR 26) @
0.28%
MH #4-8
RIM: 7.40
INV. IN: 0.27 (N)
INV. IN: -2.17 (NE)
INV. IN: -2.25 (E)
INV. OUT: -2.27 (W)
MH #4-9
RIM: 7.80
INV. IN: -2.02 (E)
INV. OUT: -2.10 (W)
MH #4-11
RIM: 6.00
INV. IN: 0.05 (N)
INV. IN: 0.71 (S)
INV. OUT: -0.10 (NW)
INV. OUT: -0.10 (W)
10 TH
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MH #1
RIM: 8.00
INV. IN: -2.03 (SE)
INV. OUT: -2.13 (SW)
MH #2
RIM: 8.00
INV. IN: -1.62 (SE)
INV. OUT: -1.72 (NW)
MH #3
RIM: 7.00'
INV. IN: -0.90' (SE)
INV. OUT: -1.00' (NW)
MH #4
RIM: 6.00'
INV. IN: -0.14' (S)
INV. OUT: -0.24' (NW)
TOPOGRAPHIC INFORMATION FOR TYBEE
LIGHTHOUSE AREA SEWER - PHASE 2 - DIVISION III
IS BASED UPON AVAILABLE LIDAR AND GIS DATA.
CONTRACTOR SHALL BE RESPONSIBLE FOR
LOCATING ALL UNDERGROUND UTILITIES AND
OTHER SALIENT FEATURES PRIOR TO BEGINNING
CONSTRUCTION. MANHOLE RIM AND INVERT
ELEVATIONS ARE APPROXIMATE. CONTRACTOR
SHALL VERIFY ALL MANHOLE ELEVATIONS PRIOR
TO BEGINNING CONSTRUCTION.
PROPOSED 10" SEWER MAIN
PROPOSED 4' I.D. MANHOLE
1. 10TH ST (NORTH SIDE) - CUT AND PLUG
EXISTING SEWER LATERALS AND CONNECT TO
PROPOSED 10" DIA. SEWER MAIN.
2. 10TH ST. (SOUTH SIDE) - EXTEND EXISTING
SEWER LATERALS AND CONNECT TO PROPOSED
10" DIA. SEWER MAIN.
3. INSTALL 4" DIA. CLEANOUTS AT PROPERTY
LINES.
4. THE DESIGN, INSTALLATION, OPERATION, AND
MONITORING OF THE TEMPORARY BYPASS
PUMPING SYSTEM SHALL BE THE CONTRACTOR'S
RESPONSIBILITY.
PROPOSED 4" DIA. CLEANOUT
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