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Home My WebLink AboutRD-243-13, v "V I I L� I INSTALL GABION BANK STABILIZATION (SEE DETAILS) I INSTALL RIPRAP STONE FOR 1 PROTECTION AT PIPE OUTLET (SEE DETAIL) 6" METAL PIPE IPIV 1N= 210.74 INV OUT 209.52 Y' ✓F -B7 r io_ 191 r WF -B? 1 %P PROVIDE FOR DRIVEWAY ACCESS \ DURING ROADWAY CLOSURE TEMPORARY DEWATERING (FRAC) TANK AND EQUIPMENT 273- - REVERE STREET (PUBLIC - 45' WIDTH) M 6" Cl W (AYANDONED) APPROX ROW INSTALL COMPACTED SOIL LIFT BANK STABILIZATION ALONG ALL AREAS OF DISTURBED STREAMBANK (SEE DETAILS) I I I I l I TEMPORARY WELL POINT USED TO CONTROL GROUNDWATER ELEVATION 1 (Y1 I C� V1 / V �I I / d-1 1. 1 -1- n l- 9� 1 N I 1 / / ADDITIONAL TEMPORARY COFFER DAM OR - SILTATION BOOM (AS NEEDED) TO PREVENT BACKWATER AND PREVENT DOWNSTREAM SILTATION j INSTALL TEMPORARY EROSION !' CONTROLS (SEE DETAILS) rDi 1 / 1 \ / I I INSTALL TEMPORARY BYPASS PIPING Z (24" MIN. HDPE OR APPROVED ALTERNATIVE) v INSTALL COMPACTED SOIL LIFT BANK p STABILIZATION ALONG ALL AREAS OF DISTURBED STREAMBANK (SEE DETAILS) PROVIDE FOR DRIVEWAY ACCESS / DURING ROADWAY CLOSURE R= 210.74 APPROX ROW 1= 207.74 Yy / r \ \TI I OUTLET OF 0111H -I 12 DUCTILE IRON.'MdA7ER MAIN Wv ,\ lam. = CA,ST IROPJ (A6APJDG'PJED) ' j _ I APPR�y_ -ROW l PROVIDE FOR DRIVEWAY ACCESS / DURING ROADWAY CLOSURE / RESTORE /REGRADE AND LOAM /SEED E ' ' ALL DISTURBED AREAS OUTSIDE OF o I i BANK STABILIZATION AREAS -1 III I �'-AS INSTALL TEMPORARY COFFER I i DAM PRIOR TO INSTALLING" VdF- 21 I I ll / TEMPORARY BYPASS PIPING 2O I oI / C) 1, TEMPORARY COFFER DAM I I qG (SHEET PILES, STEEL PLATES, JERSEY BARRIERS AND SAND I I I BAGS, PROPRIETARY SYSTEM, OR APPROVED AL TERNA T1VE) DM11 ! R =210. 90 1= 20760(x) 1= 20570(6) 1= 207.10(-,) R= 210.94 1= 207.44(a) 1= 207.54(6) _- 12 °Dl WTI I CH R =211.16 T - - 1 =203 46 GENERAL NOTES 1. DRAWINGS BASED ON TOPOGRAPHIC SURVEY CONDUCTED ON DECEMBER 2, 2011 BY GCG ASSOCIATES, INC. ELEVATIONS SHOWN HEREON ARE REFERENCED TO THE NAVD 1988 DATUM. 2. WETLAND DELINEATION PERFORMED ON NOVEMBER 18, 2011 BY COMPREHENSIVE ENVIRONMENTAL, INC. 3. STREET LINES AND PROPERTY LINES ARE BASED ON SURVEY CONDUCTED ON DECEMBER 2, 2011 BY GCG ASSOCIATES, INC. 4. ROADWAYS AND DRAINAGE STRUCTURE LOCATIONS DEPICTED ON THIS MAP ARE APPROXIMATE AND MUST BE VERIFIED BY THE CONTRACTOR. THE LOCATION AND DEPTH OF DRAINAGE PIPES SHOWN ON THESE PLANS ARE APPROXIMATE AND SHALL BE VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. 5. THE CONTRACTOR SHALL EXERCISE EXTREME CAUTION TO PREVENT ANY DAMAGE TO ADJACENT PROPERTIES. ALL AREAS WHICH ARE AFFECTED BY THE CONTRACTOR'S OPERATIONS SHALL BE RETURNED TO THEIR ORIGINAL CONDITION OR BETTER, AT NO ADDITIONAL COST TO THE OWNER. 6. ANY CHANGE IN FIELD CONDITIONS SHALL BE REPORTED TO THE ENGINEER TO INSURE THAT ANY MODIFICATIONS TO THE ORIGINAL DESIGN ARE PROPER AND ADEQUATE TO SERVE THE PROJECT'S NEEDS AND COMPLY WITH THE APPLICABLE STANDARDS AND REGULATIONS. _ - - 7. CONTRACTOR SHALL IMMEDIATELY REPAIR OR FILL ANY POTHOLES THAT 21s 212 SBOH OCCUR DUE TO CONSTRUCTION. / / THE FOLLOWING SEQUENCE IS PROVIDED FOR GUIDANCE TO THE CONTRACTOR FOR COMPLYING WITH ENVIRONMENTAL REQUIREMENTS. THE CONTRACTOR REMAINS RESPONSIBLE FOR MEANS AND METHODS OF CONSTRUCTION, AND CAN REASONABLY MODIFY THIS SEQUENCE, CONSISTENT WITH ALL APPLICABLE PERMIT REQUIREMENTS. 1. CULVERT REPLACEMENT AND ADJACENT STREAMBANK STABILIZATION WORK SHALL COMMENCE AFTER JULY 1ST AND BE COMPLETED 13. PERFORM WATER, SEWER AND DRAINAGE UTILITY MODIFICATIONS AS SHOWN ON THE PLANS. CONTRACTOR SHALL PROVIDE FOR /-- PRIOR TO OCTOBER 1ST. TEMPORARY WATER AND SEWER SERVICES TO THOSE AFFECTED WHILE MAINS ARE OFF -LINE. I 2. INSTALL TEMPORARY BARRIERS TO CLOSE DOWN THE USE OF THE ROADWAY. USE OF TEMPORARY TRAFFIC SIGNAGE SHALL BE USED 14. BACKFILL THE MODIFIED WATER, SEWER AND DRAINAGE UTILITY MODIFICATIONS. PREPARE FOUNDATION FOR THE NEW CULVERT PI 111 I a I CONTRACTOR WILL MAINTAIN ACCESS THROUGHOUT CONSTRUCTION. PROVIDE FOR DRIVEWAY ACCESS \ DURING ROADWAY CLOSURE TEMPORARY DEWATERING (FRAC) TANK AND EQUIPMENT 273- - REVERE STREET (PUBLIC - 45' WIDTH) M 6" Cl W (AYANDONED) APPROX ROW INSTALL COMPACTED SOIL LIFT BANK STABILIZATION ALONG ALL AREAS OF DISTURBED STREAMBANK (SEE DETAILS) I I I I l I TEMPORARY WELL POINT USED TO CONTROL GROUNDWATER ELEVATION 1 (Y1 I C� V1 / V �I I / d-1 1. 1 -1- n l- 9� 1 N I 1 / / ADDITIONAL TEMPORARY COFFER DAM OR - SILTATION BOOM (AS NEEDED) TO PREVENT BACKWATER AND PREVENT DOWNSTREAM SILTATION j INSTALL TEMPORARY EROSION !' CONTROLS (SEE DETAILS) rDi 1 / 1 \ / I I INSTALL TEMPORARY BYPASS PIPING Z (24" MIN. HDPE OR APPROVED ALTERNATIVE) v INSTALL COMPACTED SOIL LIFT BANK p STABILIZATION ALONG ALL AREAS OF DISTURBED STREAMBANK (SEE DETAILS) PROVIDE FOR DRIVEWAY ACCESS / DURING ROADWAY CLOSURE R= 210.74 APPROX ROW 1= 207.74 Yy / r \ \TI I OUTLET OF 0111H -I 12 DUCTILE IRON.'MdA7ER MAIN Wv ,\ lam. = CA,ST IROPJ (A6APJDG'PJED) ' j _ I APPR�y_ -ROW l PROVIDE FOR DRIVEWAY ACCESS / DURING ROADWAY CLOSURE / RESTORE /REGRADE AND LOAM /SEED E ' ' ALL DISTURBED AREAS OUTSIDE OF o I i BANK STABILIZATION AREAS -1 III I �'-AS INSTALL TEMPORARY COFFER I i DAM PRIOR TO INSTALLING" VdF- 21 I I ll / TEMPORARY BYPASS PIPING 2O I oI / C) 1, TEMPORARY COFFER DAM I I qG (SHEET PILES, STEEL PLATES, JERSEY BARRIERS AND SAND I I I BAGS, PROPRIETARY SYSTEM, OR APPROVED AL TERNA T1VE) DM11 ! R =210. 90 1= 20760(x) 1= 20570(6) 1= 207.10(-,) R= 210.94 1= 207.44(a) 1= 207.54(6) _- 12 °Dl WTI I CH R =211.16 T - - 1 =203 46 GENERAL NOTES 1. DRAWINGS BASED ON TOPOGRAPHIC SURVEY CONDUCTED ON DECEMBER 2, 2011 BY GCG ASSOCIATES, INC. ELEVATIONS SHOWN HEREON ARE REFERENCED TO THE NAVD 1988 DATUM. 2. WETLAND DELINEATION PERFORMED ON NOVEMBER 18, 2011 BY COMPREHENSIVE ENVIRONMENTAL, INC. 3. STREET LINES AND PROPERTY LINES ARE BASED ON SURVEY CONDUCTED ON DECEMBER 2, 2011 BY GCG ASSOCIATES, INC. 4. ROADWAYS AND DRAINAGE STRUCTURE LOCATIONS DEPICTED ON THIS MAP ARE APPROXIMATE AND MUST BE VERIFIED BY THE CONTRACTOR. THE LOCATION AND DEPTH OF DRAINAGE PIPES SHOWN ON THESE PLANS ARE APPROXIMATE AND SHALL BE VERIFIED BY THE CONTRACTOR PRIOR TO CONSTRUCTION. 5. THE CONTRACTOR SHALL EXERCISE EXTREME CAUTION TO PREVENT ANY DAMAGE TO ADJACENT PROPERTIES. ALL AREAS WHICH ARE AFFECTED BY THE CONTRACTOR'S OPERATIONS SHALL BE RETURNED TO THEIR ORIGINAL CONDITION OR BETTER, AT NO ADDITIONAL COST TO THE OWNER. 6. ANY CHANGE IN FIELD CONDITIONS SHALL BE REPORTED TO THE ENGINEER TO INSURE THAT ANY MODIFICATIONS TO THE ORIGINAL DESIGN ARE PROPER AND ADEQUATE TO SERVE THE PROJECT'S NEEDS AND COMPLY WITH THE APPLICABLE STANDARDS AND REGULATIONS. _ - - 7. CONTRACTOR SHALL IMMEDIATELY REPAIR OR FILL ANY POTHOLES THAT 21s 212 SBOH OCCUR DUE TO CONSTRUCTION. / / RE'TERE SCALE 1" - 20' 20 10 0 20 40 Scale 1" = 20' LEGEND: THE FOLLOWING SEQUENCE IS PROVIDED FOR GUIDANCE TO THE CONTRACTOR FOR COMPLYING WITH ENVIRONMENTAL REQUIREMENTS. THE CONTRACTOR REMAINS RESPONSIBLE FOR MEANS AND METHODS OF CONSTRUCTION, AND CAN REASONABLY MODIFY THIS SEQUENCE, CONSISTENT WITH ALL APPLICABLE PERMIT REQUIREMENTS. 1. CULVERT REPLACEMENT AND ADJACENT STREAMBANK STABILIZATION WORK SHALL COMMENCE AFTER JULY 1ST AND BE COMPLETED 13. PERFORM WATER, SEWER AND DRAINAGE UTILITY MODIFICATIONS AS SHOWN ON THE PLANS. CONTRACTOR SHALL PROVIDE FOR /-- PRIOR TO OCTOBER 1ST. TEMPORARY WATER AND SEWER SERVICES TO THOSE AFFECTED WHILE MAINS ARE OFF -LINE. APPROX ROW 2. INSTALL TEMPORARY BARRIERS TO CLOSE DOWN THE USE OF THE ROADWAY. USE OF TEMPORARY TRAFFIC SIGNAGE SHALL BE USED 14. BACKFILL THE MODIFIED WATER, SEWER AND DRAINAGE UTILITY MODIFICATIONS. PREPARE FOUNDATION FOR THE NEW CULVERT TO SET UP THE ROADWAY DETOUR. PEDESTRIAN PASSAGE WILL NEED TO BE MAINTAINED THROUGHOUT THE ROADWAY DETOUR. THE PLACEMENT. CONTRACTOR WILL MAINTAIN ACCESS THROUGHOUT CONSTRUCTION. 3. PERFORM ROADWAY ALTERATIONS SUFFICIENT FOR EQUIPMENT ACCESS FOR CULVERT RECONSTRUCTION. 15. STARTING AT THE END AS DIRECTED BY THE SHOP DRAWINGS, INSTALL THE CULVERT CUTOFF WALLS AND WINGWALL FOOTINGS. 4. TEMPORARY EROSION CONTROLS, COFFER DAMS, AND BYPASS PIPING (OR APPROVED ALTERNATIVE BYPASS). SHALL BE USED TO 16. INSTALL THE NEW CULVERT SECTIONS AND WINGWALLS ON TOP OF CUTOFF WALLS, FOOTINGS, AND PREPARED BASE. MAINTAIN NATURAL FLOWS IN THE STREAMBED IMMEDIATELY UPSTREAM AND DOWNSTREAM OF THE WORK AREA, AND TO PREVENT 17. IT IS AT THE CONTRACTORS DISCRETION WHETHER TO FILL CULVERT SECTIONS WITH DESIGNED STREAM BED MATERIAL AS WORK �F- SEDIMENT DISCHARGE TO STREAM, IN ACCORDANCE WITH PERMIT CONDITIONS. PROGRESSES OR AS A FINAL STEP. AS NOTED ON THE DETAIL SHEETS: THE USE OF A SEPARATE TOP SLAB OPTION OR ACCESS MANHOLES OPTION IS AT THE DISCRETION OF THE CONTRACTOR. A CONTINUOUS BOX CULVERT, TOP SLAB OPTION, OR SEALABLE ACCESS 5. INSTALL TEMPORARY BYPASS PIPING, OUTSIDE THE LIMITS OF NEW CULVERT STRUCTURE, IN THE GENERAL LOCATION SHOWN IN THE MANHOLES, MEETING ALL REQUIRED SPECIFICATIONS MAY BE EDP USED. PLAN VIEW, AS REQUIRED BY FIELD CONDITIONS. INSTALLATION OF THE TEMPORARY BYPASS PIPING SHALL BEGIN FROM THE DOWNSTREAM -169- - END. DO NOT ACTIVATE BYPASS PIPING UNTIL ROADWAY DETOUR PREPARATIONS ARE COMPLETE. 18. GRADE STREAMBED MATERIAL WITHIN BOX CULVERT AS DEPICTED ON PLANS. THE FULL CONSTRUCTION OF THE DESIGNED STREAMBED MATERIAL AND STREAMBANKS WITHIN THE CULVERT MUST BE COMPLETED AS SPECIFIED ON THE PLANS. 6. A TEMPORARY COFFERDAM SHALL BE INSTALLED AROUND THE UPSTREAM END OF THE TEMPORARY BYPASS PIPING PRIOR TO PUTTING OPTIONAL CONSTRUCTION METHOD: INSTALL THE TOP SLAB PORTION OF THE BOX CULVERT OR SEALABLE ACCESS MANHOLE COVERS AND D- THE TEMPORARY BYPASS PIPING INTO USE. HEADWALLS AND SECURE AS SPECIFIED. - -170- - 7. THE UPSTREAM WATER LEVEL OF THE STREAM SHALL BE GRADUALLY LOWERED THROUGH THE USE OF TEMPORARY BYPASS PIPING, 19. REALIGN TEMPORARY BYPASS PIPING WITHIN CULVERT, STABILIZE AND REESTABLISH STREAMBANK WHERE TEMPORARY PIPE WAS IN PUMPING, OR OTHER APPROVED MEANS, AS TO AVOID LARGE VOLUMES OF WATER AND EROSIVE VELOCITIES TO DISCHARGE DOWNSTREAM. USE. - -169- - 8. THE UPSTREAM COFFERDAM SHALL BE INSTALLED TO CONTROL SURFACE WATER ACTION AND MAINTAIN ANY NECESSARY WORK IN THE 20. COMPLETE BACKFILLING OF CULVERT STRUCTURE. DRY. `o, 21. INSTALL COMPACTED SOIL LIFT BANK STABILIZATION ALONG ALL AREAS OF DISTURBED STREAMBANK, SHAPE STREAMBANKS TO BLEND ---- - - ---- 9. WATER, SEWER AND DRAINAGE UTILITY MODIFICATIONS, AND CULVERT STRUCTURE PLACEMENT SHALL BE CONDUCTED DURING LOW WITH BED MATERIAL IN THE CULVERT. W FLOW CONDITIONS AT A TIME WHEN NO RAIN IS PREDICTED FOR THE ANTICIPATED TIME REQUIRED FOR INSTALLATION. 22. INSTALL GABION BANK STABILIZATION ALONG AREA OF ERODED STREAMBANK. WORK ALONG PRIVATE PROPERTY MAY REQUIRE 10. ADJUST EROSION CONTROLS AS REQUIRED TO PROTECT STREAM AND WETLANDS FROM SEDIMENT RESULTING FROM CONSTRUCTION TEMPORARY CONSTRUCTION EASEMENT. e '. ACTIVITY. ---- - - - - -- 23. REMAINING TEMPORARY BYPASS PIPING AND COFFER DAM SHALL BE REMOVED. IN ALL CASES OF COFFERDAM REMOVAL THE RELEASE 11. INSTALL DEWATERING EQUIPMENT IN PREPARATION FOR COMPLETE EXCAVATION. A DEWATERING FRAC TANK WITH OF FLOWS SHALL BE XaF -Ai GRADUAL AS TO AVOID LARGE VOLUMES OF WATER AND EROSIVE VELOCITIES TO DISCHARGE DOWNSTREAM. SEDIMENTATION /FILTRATION BAG SHALL BE USED PRIOR TO DISCHARGE. 24. CONSTRUCT REMAINING ROADWAY IMPROVEMENTS, AND PROTECTIVE FENCE AND GUARDRAIL WHERE SPECIFIED. 12. EXCAVATE THE ROADWAY TO PREPARE FOR .PLACEMENT OF THE NEW UTILITIES AND CULVERT. REMOVE THE EXISTING CULVERTS, IN -LINE CATCH BASINS, AND HEADWALLS, AND COMPLETE EXCAVATION. THE AREA OF DISTURBANCE SHALL BE KEPT TO A MINIMUM. 25. REMOVE REMAINING EROSION CONTROLS WHEN ALL SURFACES HAVE BEEN STABILIZED. RE'TERE SCALE 1" - 20' 20 10 0 20 40 Scale 1" = 20' LEGEND: /-- APPROX ROW E%ISPNG SURVEY MARKER APPROXIMATE RIGHT -OF -WAY EXISPNG 5' CONTOUR �F- APPROXIMATE PROPERTY LINE EDP -169- - EXISTING 1' CONTOUR EXISTNG EDGE OF PAVEMENT D- EXISPNG DRAIN UNE - -170- - PROPOSED 5' CONTOUR PROPOSED DRAIN LINE - -169- - PROPOSED V CONTOUR PROPOSED CULVERT `o, EXISPNG U1UTY POLE ---- - - ---- EXISTING WATER MMN W EXISPNG SIGN PROPOSED WATER MAIN e '. EXISTING TREE W /TRUNK DIAMETER ---- - - - - -- EXISTING SEVER MAIN XaF -Ai E%ISPNG WETLAND ELAG COFFER DAM PROPOSED SEWER MAIN SHEET PILES EROSION CONTROLS JERSEY BARRIER OMIT OF WORK - - -- APPROX. PROPERTY LINE EASEMENT P.E. STAMP No. I Revision /Issue I Date COMPREHENSIVE ENVIRCINMENTAL INCORPORATED 225 CEDAR HILL ST. MARLBOROUGH, MA 01752 0 REVERE STREET N. LEXINGTON BROOK CULVERT REPLACEMENT WATER MANAGEMENT AND EROSION CONTORL PLAN Town of Lexington, IVA r roject ND.: 228 -4 Sheet ate: FEBRUARY 2015 pDrown By: : Md By: MLL 1" = 20' RECORD , . RD Y � 3