March 10, 2005
NOTICE TO PLANHOLDERS
FOR CONSTRUCTION OF
CENTRAL
DISPOSAL SITE
LEACHATE & COMPRESSED LANDFILL GAS
PIPELINES PROJECT
COUNTY PROJECT NO. W06985
ADDENDUM
NO. 3
The
following changes are hereby deemed to be a part of
the Contract Documents in full effect as if originally
included.
GENERAL-
1. Notice to Proceed: The County anticipates a
Notice to Proceed date of April 8, 2005.
DIVISION
I-BIDDING REQUIREMENTS
1. Document 00400, paragraph 4 Schedule of Bid
Prices, Bid Item 13: DELETE description "Leak Detection Pull Boxes" and REPLACE with "NOT USED." DELETE references to applicable section, quantity, and units.
2. Document 00400, paragraph 4 Schedule of Bid
Prices, Bid Item 26: DELETE "Continuous Cable Leak Detection" and REPLACE with "Leak Detection System."
DIVISION
II-CONTRACTING REQUIREMENTS
1. Document 00520 Agreement: Article 3.1 Contract
Time, Second Paragraph DELETE paragraph and REPLACE with "Contractor shall achieve Substantial
Completion, as defined in Document 01420 References and Definitions,
Paragraph 1.5B, Item 75, of the entire Work by
November 1, 2005 as provided in Document 00700
(General Conditions). Contractor shall achieve Final Completion of
the entire Work and be ready for Final Payment in
accordance with Document 01780 (Project Record
Documents) by November 15, 2005."
2. Document 00520, Article 4 Contract Sum Item 13: DELETE description "Leak Detection Pull Boxes" and
Replace with "NOT USED." DELETE references to applicable section, quantity, and units.
3. Document 00520, Article 4 Contract Sum Item 26: DELETE "Continuous Cable Leak Detection" and REPLACE with "Leak Detection System."
DIVISION III-CONDITIONS OF THE CONTRACT
1. Document 00800 ADD Section F:
F. Coordination with on-site activities.
"Coordinate activities with County to ensure that
County's essential operations are not adversely
affected. Of critical importance is the trucking of
leachate from Leachate Pond 1 (LP1) and Leachate Pond 2
(LP2) for which the leachate pipeline will eventually
replace the need for trucking.
"The
project drawings call for pump stations at both LP1 and
LP2. At LP1 trucks currently back in to load leachate via portable
pump where the pump station is to be constructed (as was
available to observe during pre-construction site
visit). Trucking at LP2 should be less of a conflict
because the trucks load below the pond in a different
location than that called for the pump station.
"Submit
a detailed construction schedule for the installation of
the of the pump stations. County will manage its
leachate levels in LP1 so as to provide Contractor 5
consecutive days (Monday - Friday) with no trucking at
LP1 to allow Contractor to work on foundation for pump
station at LP1 including piping related to the
foundation. County
will continue to truck leachate from below LP2. County may then resume trucking at LP1 for up to
2 weeks should County need to control pond level. County will then cease trucking again at LP1 for
5 consecutive days while Contractor installs pump
station at LP1. The
second shut down of trucking at LP1 shall be coordinated
with Contractor's construction schedule. The County
retains right to resume trucking for up to two weeks
immediately after Contractor's construction of pump
foundation.
"Contractor will be allowed to work at
either LP1 or LP2 while trucking is occurring but must
not impede trucking operation. Should County receive a legitimate claim for
standby or delays from trucking firm, Contractor shall
reimburse County for added cost caused by
Contractor."
DIVISION
IV-TECHNICAL SPECIFICATIONS
1. Document 01100 Summary: Paragraph 1.14
Construction Staking and Monument Protection. DELETE parts A through G and REPLACE with the following:
"A.
Contractor shall provide construction staking in
accordance with Document 01720 Field Engineering.
"B.
Existing monuments shall be protected. Contractor shall
employ a licensed Land Surveyor to replace any monuments
disturbed by the Contractor. Any monument disturbed by
the Contractor which is not directly affected by Work
shall be replaced by the Contractor at the Contractor's
expense."
2. Document 01270, Paragraph 2.13: DELETE paragraph and REPLACE with "NOT USED." CLARIFICATION: Leak
detection pull boxes shall be included in the lump sum
price paid for the Leak Detection System under Bid Item
26.
3. Document 01270, Paragraph 2.26: DELETE paragraph and REPLACE with paragraph 2.26 as follows:
"2.26 LEAK DETECTION SYSTEM (Bid Item No. 26)
"A. Measurement for payment for
the leak detection system as shown on the
contract drawings and as specified in Section 13850
"Leak Detection and Location Systems," shall
be based upon the designing and providing of the leak
detection system, per paragraph 1.1B,
"Scope," of this section.
"B. Payment for the leak detection system shall be
made at the bid price for the lump sum price named in
the Bid Form under Item No. 26 Leak Detection System for
all such work as required per the Contract
Documents."
4. Document 01720, Paragraph 1.3A: DELETE first sentence and REPLACE with "The Engineer has established sufficient
temporary horizontal and vertical control points prior
the beginning of construction to enable the Contractor
to layout the Work.."
5. Document 01720 Field Engineering, Paragraph 1.3D: DELETE sentence
and REPLACE with "A monumented survey line has been provided by
the Engineer as a base line for horizontal control on
the project area."
6. Document 01720 Field Engineering, Paragraph 1.3E: DELETE second sentence and REPLACE with "The elevation of each temporary bench mark
will be marked at each temporary bench mark in the field
by the Contractor."
7. Document 01720 Field Engineering, Paragraph 1.5B: DELETE paragraph.
8. Document 02315 Utility Earthwork, Paragraph 2.1B: DELETE description for Type 1 backfill and REPLACE with the following.
"Sand
shall be material with 100 percent passing a ¾-inch
sieve, at least 80 percent passing a 3/8-inch sieve,
35-55 percent passing a No. 4 sieve, 0-15
percent passing a No. 200 sieve, and a sand equivalent value not less than 30."
9. Document 02445 Boring and Jacking, Paragraph 1.4: ADD subparagraph
F "The subsurface sampling by Caltrans District 3
at the intersection of Stony Point Road and Highway 116
detected low levels of dissolved gasoline contamination.
The reported concentrations were below the Department of
Health standards for drinking water."
10. Document 02445 Boring and Jacking, Paragraph 1.4: ADD subparagraph
G "Because of potential seasonal fluctuations of
ground water table, water may or may not be present in
the jacking pit. If water is encountered, Caltrans
recommends that the Contractor over-excavate the jacking
pit and line the pit with fabric and drain-rock in order
to provide an area from which to collect water. The sump, from which to pump, shall be excavated
at the lower end. Contractor
shall monitor discharge to prevent migration of fines. Dewater shall be pumped to storage container for
discharge to sanitary sewer system. Contractor shall
obtain discharge permit from the governing agency prior
to any discharge to any sewer.
11. Document 02445 Boring and Jacking, Paragraph
3.1B: ADD subparagraphs
1 and 2 below:
1. Adequately fence boring and receiving pits with
6' chain link fence or have Type K barrier placed around
pits. For the crossing of Highway 116, K-rail protection
along the traveled way shall be used at the southerly
pit.
2. Shore
pits according to Cal-OSHA MINIMUM REQUIREMENTS. Shoring
for jacking and receiving pits located within 15' of
traffic lanes on a State highway shall not extend more
than 36" above pavement grade unless otherwise
authorized by a Caltrans' representative. Reflectors
shall be affixed to the shoring on the sides facing
traffic. Around the perimeter of the pits shall be in
place a 6' chain link fence during non-working days. If
pipe is in roadway, place steel plate pit in
accordance with Section 02315, paragraph 2.4 STEEL
PLATE.
12. Document 02445 Boring and Jacking, Paragraph 3.1: ADD subparagraph
F "Bore and jack crossing of Highway 116 shall have
a survey grid installed and monitored daily during the
jacking operation. If the roadway settles more than
10mm, the jacking operation shall cease until such time
as a mitigation plan can be delivered to the State by
the Contractor."
13. Document 13850 Leak Detection and Location
Systems: DELETE section
and REPLACE with SECTION 13850 Leak Detection and Location Systems,
attached.
PLANS-
1. G004, Details 1 through 4. DELETE "3-9" percent passing a number 200 sieve and REPLACE with "0-15%" passing a number 200 sieve.
2. C503, Detail 5. CLARIFICATION:
Contractor shall provide fabricated HDPE tee and
reducers sized adequately to dual contain an 8"
full port Nordstrom valve or equivalent.
3. The project drawings are reissued with this
Addendum:
· C126
RESPONSES
TO WRITTEN QUESTIONS-
All
questions submitted by the deadline for written
questions of February 23, 2005 have been answered within
Addenda Nos. 1 and 2.
Please
fill out the Addendum section of the Bid Form [Division
I, Section 00400, Page 1, 3(a)] acknowledging receipt of
this Addendum No. 3
DAVID D.
KNIGHT, DIRECTOR
DEPARTMENT OF TRANSPORTATION
AND PUBLIC WORKS
Randall S.
Forbes
Randall S. Forbes, Design Manager
Measure M