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CONSTRUCTION NOTES.
1. THE CONTRACTOR SHALL CALL DIGSAFE AT
1- 800 -322 -4844 AT LEAST 72 HOURS, SATURDAYS,
SUNDAYS, AND HOLIDAYS EXCLUDED, PRIOR TO
.EXCAVATING AT ANY LOCATION. A COPY OF THE DIGSAFE
PROJECT REFERENCE NUMBER(S) SHALL BE GIVEN
TO THE OWNER PRIOR TO EXCAVATION.
2. LOCATIONS OF EXISTING PIPES, CONDUITS, UTILITIES,
FOUNDATIONS AND OTHER UNDERGROUND OBJECTS ARE
NOT WARRANTED TO BE CORRECT AND THE CONTRACTOR
SHALL HAVE NO CLAIM ON THAT ACCOUNT SHOULD
THEY BE OTHER THAN SHOWN.
3. TEST PITS TO LOCATE EXISTING UTILITIES MAY BE
ORDERED BY THE ENGINEER.
4. STONE WALLS, FENCES, MAIL BOXES, SIGNS, CURBS,
LIGHT POLES, ETC.. SHALL BE REMOVED AND REPLACED
AS NECESSARY TO PERFORM THE WORK. UNLESS
OTHERWISE INDICATED, ALL SUCH WORK SHALL BE
INCIDENTAL TO CONSTRUCTION OF THE PROJECT.
5. ALL PAVEMENT DISTURBED BY THE CONTRACTOR'S
OPERATIONS SHALL BE REPLACED IN ACCORDANCE WITH
THE SPECIFICATIONS AND AS SHOWN ON THE DRAWINGS.
6. ALL AREAS DISTURBED BY THE CONTRACTOR BEYOND
PAYMENT LIMITS SHALL BE RESTORED AT NO ADDITIONAL
COST TO THE OWNER.
7. CONCRETE CRADLES OR ARCHES SHALL BE CONSTRUCTED
WHERE SHOWN ON THE DRAWINGS OR WHERE DIRECTED
BY THE ENGINEER. UNLESS OTHERWISE INDICATED,
CONCRETE USED FOR PIPE ANCHOR BLOCKS, BACKING,
PIPE CRADLES, ARCHES, AND FILL SHALL HAVE A MINIMUM
COMPRESSIVE STRENGTH OF 3000 PSI AT 28 DAYS.
8. CONCRETE THRUST BLOCKS, ANCHOR BLOCKS, OR APPROVED
JOINT RESTRAINT METHODS SHALL BE PROVIDED FOR FORCE
MAINS WHERE ANY BENDS, TEES, PLUGS, OR WYES ARE
INSTALLED, OR WHERE DIRECTED BY THE ENGINEER. FOR
THRUST BLOCK DETAILS AND MINIMUM BLOCK BEARING
AREAS, SEE DETAILS.
9. THE CONTRACTOR SHALL NOT STORE ANY APPARATUS,
MATERIALS, SUPPLIES, OR EQUIPMENT ON DRAINAGE
STRUCTURES OR WITHIN 100 FEET OF WETLANDS.
10, FORCE MAIN TRENCHES MAY BE EXCAVATED WIDER THAN THE
'LIMIT OF EXCAVATION AND PAYMENT FOR EARTH
EXCAVATION' ABOVE THE 'LINE OF NARROW TRENCH LIMIT.'
ANY SUCH ADDITIONAL EXCAVATION SHALL BE AT THE
CONTRACTORS EXPENSE AND SHALL NOT BE MEASURED
FOR PAYMENT.
11. BELOW THE 'LINE OF NARROW TRENCH LIMIT" THE TRENCH
SHOULD NOT BE EXCAVATED BEYOND THE TRENCH
WIDTH 'W. IF MATERIAL IS LOOSENED OR REMOVED BEYOND
THE ABOVE MENTIONED LIMITS, THE CONTRACTOR WILL BE
REQUIRED TO PROVIDE CRUSHED STONE FOR THE FULL
WIDTH OF THE TRENCH AT NO ADDITIONAL COST
TO THE OWNER.
12. SHEETING TO BE LEFT IN PLACE SHALL BE USED WHERE
SHOWN ON THE DRAWINGS OR WHERE DIRECTED BY THE
ENGINEER. IT SHALL BE LEFT IN PLACE BELOW A
LINE 12 INCHES ABOVE THE TOP OF THE PIPE UNLESS
OTHERWISE DIRECTED BY THE ENGINEER.
13. ALL TRENCH EXCAVATIONS SHALL BE COMPLETELY CLOSED
AT THE END OF EACH WORKING DAY BY BACKFILLING OR
COVERING WITH STEEL PLATES.
14. THE CONTRACTOR MUST GIVE THE ENGINEER AT LEAST
10 DAYS' NOTICE PRIOR TO PERFORMING ANY
WORK IN WETLANDS.
15. THE CONTRACTOR SHALL NOTIFY THE LOCAL WATER
DEPARTMENT AT LEAST 72 HOURS PRIOR TO EXCAVATING
NEAR WATERLINES.
16. THE CONTRACTOR SHALL INSTALL THE PROPOSED FORCE MAIN
FROM A POINT AS SHOWN ON THE DRAWINGS TO THE GRADES
AND ELEVATIONS AS INDICATED. THIS WORK SHALL BE
COORDINATED WITH THE CONTRACTOR RESPONSIBLE FOR
CONSTRUCTION BEYOND THE LIMIT OF THIS CONTRACT.
(SEE CONTRACT 92 -1)
17. WHEN PERFORMING WORK ON BEDFORD STREET, THE CONTRACTOR
SHALL MAINTAIN AT LEAST ONE LANE OF TRAFFIC IN
EITHER DIRECTION AT ALL TIMES. THE CONTRACTOR SHALL
BE REQUIRED TO UTILIZE APPROPRIATE BARRICADES AND
SIGNAGE TO DETOUR THE TRAFFIC AROUND THE CONSTRUCTION
SITE. (SEE SPECIFICATIONS FOR TRAFFIC MANAGEMENT PLAN
AND STATE HIGHWAY PERMIT.)
18. CONTROL OF GROUNDWATER DURING CONSTRUCTION SHALL BE
IN ACCORDANCE WITH SPECIFICATION SECTION 02140, DEWATERING.
19. EXISTING INFORMATION CONTAINED ON THESE DRAWINGS WERE
OBTAINED FROM THE FOLLOWING SOURCES:
(a) FORCEMAIN — CONTRACT 3, DECEMBER, 1938
—MISC. CONTRACT, JANUARY, 1966
— BEDFORD STREET PLANS, 1973
(b) SANITARY SEWER —MANOR SEWERAGE SYSTEM, 1946 -1947
—TOWN OF LEXINGTON SEWER PLANS, 1949
(c) WATER —TOWN OF LEXINGTON WATER MAIN PLANS, 1925 -1947
(d) GAS — LEXINGTON GAS LIGHT Co., 1927 -1990
(e) STORM DRAIN — EXISTING DRAINAGE FACILITIES PLAN, FIG. E -12,
— WILLIAMS ROAD, STREET AND DRAIN RECORD PLAN,1954
(f) TOPOGRAPHY AND STREET /PROPERTY LINES —TOWN OF LEXINGTON ASSESSORS MAPS,
APRIL, 1987
BORING L(
TOP OF BORING
BLOWS REQ
EACH SIX It
ELEVATION
WEIGHT FAL
1,
BLOWS REQUIRED TO PENETRATE - -�
EACH SIX INCH CHANGE IN
ELEVATION USING A 300 POUND
WEIGHT FALLING 24 INCHES
FIGURE WHEN BELOW BEDROCK
INDICATES THE MINUTES REQUIRED
TO PENETRATE DEPTH AS MARKED 6
OF ROCK USING STANDARD
PROCEDURES
4
2
BOT
NOTE:
FOR DRILLER'S NAME, S
ENCOUNTERED AND OTF
PERTINENT DATA SEE B
LOGS BOUND IN SPECIF'
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- INDICATES DEPTH OF BORING
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