bogan road booster station engine pump addition …
TRANSCRIPT
March 8, 2019
BL022-19
BOGAN ROAD BOOSTER STATION ENGINE PUMP ADDITION
ADDENDUM #01
Clarifications / additions to the bidding documents:
1. Add sheet C-102 (see attached).
2. Sheet C-504 has been amended to remove the word "wood" from the Sd1-S detail to indicate wood post
for silt fence is not acceptable (replace Sheet C-504 with the attached C-504).
3. Sheet C-504 has been amended to add the text "Type C" to the Sd2-F detail to further describe the type
of silt fence required for inlet protection.
4. References are not needed as a part of the bid package.
5. On Sheet E-501, change the 1-inch conduit and CAT 5E cable in between the new and existing RTUs to
3/4-inch conduit and CAT 6 cable.
Questions received and response (in Italics):
1. Can concrete be used Instead of asphalt for paving?
Provide asphalt for paving in accordance with detail G5b on sheet C-501. Note that the site currently
features asphalt paving.
2. Is It acceptable If the exhaust silencer/muffler Is mounted vertically in a separate compartment from the
engine? (2.09.C.1)
If it’s a manufacturer's standard package offering, then it's likely acceptable. However, any deviations to
the package configuration as designed will need to be evaluated during the submittal review process for
final approval.
3. What size fuses and breakers should be supplied? (2.10.A.3)
Based on the current (RTU) design, the fuses and breakers should be sized for 5A to provide adequate
power for the PLC and cellular communications unit.
4. Will a dry contact for the valve position be supplied to the engine controller to communicate the valve
position? If not, how will this be done? (2.14.C.2)
No. Valve control is by the County's system; not by the pump controller. A permissive signal will be
provided by the County's RTU; allowing the engine pump to run.
5. Can the attached (Esterline Series 27) transmitter be used for control on the diesel drive pump instead of
the Rosemount 3051CG? I am concerned with how the Rosemount pressure transmitter will handle
natural voltage fluctuations of the diesel engine during startup and while running?
The Rosemount 3051CG is the County's standard instrument. It should be noted that the 4-20mA signal
to the pump controller is not directly sent from the PIT to the controller. This signal is transmitted to the
County's RTU. Signal is split and re-transmitted to the pump controller.
The sign in sheet for the Pre-Bid Conference held on February 21, 2019 at the Bogan Road Booster Pump
Station is attached.
This addendum should be acknowledged on the Bid Form, page 16 of the Bid Document. Failure to do so may
result in your bid being deemed non-responsive.
Thank you.
Dana Garland, CPPB
Purchasing Associate III
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DATE
REVISIONS
DESCRIPTION
BC PROJECT NUMBER
FILENAME
SHEET NUMBER
DRAWING NUMBER
AT FULL SIZE
CHECKED:
APPROVED:
DRAWN:
CLIENT PROJECT NUMBER
DESIGNED:
REV
CHECKED:
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BID DOCUMENTS
CERT. NO. 0000070007
SCALE IN FEET
0 20 40
ARROW
NORTH
Utilities ProtectionCenter.Inc.
THREE WORKING DAYSBEFORE
YOU DIG GEORGIACALL
It's The Law.811
COLOR CODESFOR
UTILITY LOCATING
Utilities Protection Center.Inc.
IF YOU DIG GEORGIA
CALL US FIRST.811
It's The Law.
RED
YELLOW
ORANGE
BLUE
GREEN
ELECTRIC
GAS-OIL
WATER
SEWER
TELEPHONE/CATV
®
EXISTING VALVE VAULT
NEW ENGINE PUMP
EROSION CONTROL NOTES:
1. THE CONTRACTOR SHALL PROVIDE APPROPRIATE EROSION AND SEDIMENT CONTROL
MEASURES IN ACCORDANCE WITH THE MANUAL FOR EROSION AND SEDIMENT
CONTROL IN GEORGIA, 2016 EDITION (GEORGIA SOIL AND WATER CONSERVATION
COMMISSION).
2. SILT FENCE TO BE INSTALLED IN ALL LOCATIONS DOWN GRADE FROM LAND
DISTURBING / TRENCHING ACTIVITIES.
3. SLOPE PROTECTION AND RESTORATION MEASURES SHALL BE IMPLEMENTED IN
AREAS DISTURBED BY THE CONTRACTOR.
4. CONTRACTOR SHALL PREVENT TRACKING OR FLOW OF MUD ONTO ROADWAYS. ALL
MATERIALS SPILLED, DROPPED, WASHED, OR TRACKED FROM VEHICLES OR SITE
ONTO ROADWAYS OR INTO STORM DRAINS MUST BE REMOVED IMMEDIATELY BY THE
CONTRACTOR.
5. THE ESCAPE OF SEDIMENT FROM THE SITE SHALL BE PREVENTED BY THE
INSTALLATION OF EROSION AND SEDIMENT CONTROL MEASURES AND PRACTICES
PRIOR TO, OR CONCURRENT WITH, LAND DISTURBING ACTIVITIES.
6. EROSION CONTROL MEASURES WILL BE MAINTAINED AT ALL TIMES. IF FULL
IMPLEMENTATION OF THE APPROVED PLAN DOES NOT PROVIDE FOR EFFECTIVE
EROSION CONTROL, ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES
SHALL BE IMPLEMENTED TO CONTROL OR TREAT THE SEDIMENT SOURCE.
7. AT THE END OF EACH WORK DAY, THE SITE SHALL BE STABILIZED WITH MULCH AND
TEMPORARY SEEDING.
X X
SILT FENCE - TYPE SENSITIVE
LEGEND:
INITIAL PHASE:
· INSTALLATION OF TYPE C SILT FENCE (Sd1-S)
INTERMEDIATE PHASE:
· DISTURBED AREA STABILIZATION (Ds1)
· SETUP OF TEMPORARY CONCRETE TRUCK AND VEHICLE WASH DOWN
AREA
FINAL PHASE:
· DISTURBED AREA STABILIZATION (Ds3)
· REMOVAL OF TEMPORARY EROSION AND SEDIMENTATION CONTROL
MATERIALS
EROSION AND SEDIMENTATION CONTROL PHASES:
Sd1-S
X
X
X
X
X
X
X
X
X
Ds3Ds1
Ds3Ds1
CONCRETE
WASHOUT AREA
DISTURBED AREA STABILIZATION
Ds3Ds1
FILTER SOCK - TYPE "B"
PLAN VIEW
Sd1-Fs
Sd1-Fs
INSTALL SD1-Fs
AROUND ANY PILE
OF DEBRIS AND/OR DIRT,
AS NECESSARY
BOGAN ROAD
BOOSTER STATION
ENGINE PUMP
ADDITION
ATLANTA, GA
M-0741-69
######
C-102.DWG
J. BOLANO
J. BOLANO
J. CHENG
J. JACKSON
J. BOLANO
225
C-102
EROSION CONTROL
PLAN
CIVIL
Sd1-S
Sd2-F
Sd2-F
1
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DATE
REVISIONS
DESCRIPTION
BC PROJECT NUMBER
FILENAME
SHEET NUMBER
DRAWING NUMBER
AT FULL SIZE
CHECKED:
APPROVED:
DRAWN:
CLIENT PROJECT NUMBER
DESIGNED:
REV
CHECKED:
2 3 4 5 6
C
B
1 2 3 4 5 6
OF
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LINE IS 2 INCHES
BID DOCUMENTS
CERT. NO. 0000070007
FASTENERS FOR SILT FENCES
OVERLAP AT FABRIC ENDS
EROSION AND SEDIMENT CONTROL
COMPOST FILTER SOCK
Sd1-Fs
Sd1-S
BOGAN ROAD
BOOSTER STATION
ENGINE PUMP
ADDITION
ATLANTA, GA
M-0741-69
######
C-504.DWG
J. BOLANO
J. CHENG
J. BOLANO
J. CHENG
J. BOLANO
2210
C-504
EROSION CONTROL
DETAILS
CIVIL
SILT FENCE - TYPE SENSITIVE
SIDE VIEW
FRONT VIEW
FABRIC AND SUPPORTING FRAME FOR
STEEL FRAME AND TYPE C SILT FENCE INSTALLATION
INLET PROTECTION
Sd2-F
