HomeMy WebLinkAbout2008-06-24; City Council; 19488; Award Contract for Construction 2008 ARAM and Slurry Seal Project No 6001-08SSCITY OF CARLSBAD - AGENDA BILL
19.488AB#
MTG. 6/24/08
DEPT. ENG
AWARD OF CONTRACT FOR CONSTRUCTION OF THE
2008 ARAM AND SLURRY SEAL
PROJECT NO. 6001 (08SS)
DEPT. HEAD
CITY ATTY.
CITYMGR. (Jj(
RECOMMENDED ACTION:
Adopt Resolution No. 2008-181 awarding the contract to Copp Contracting for the
construction of the 2008 ARAM and Slurry Seal Project, Project No. 6001 (08SS).
ITEM EXPLANATION: j-;
The 2008 Asphalt Rubber Aggregate Membrane (ARAM) and Slurry Seal Project is part of the City's
ongoing Pavement Management Program. This street maintenance project will extend the life of
several roadways by applying rubberized chip seal with a slurry seal surface course. The roadways
were selected based on the age and existing condition of the roadway surface. The application of
rubberized chip seal and slurry seal rejuvenates and protects the pavement surface from cracking and
water penetration.
On April 28, 2008, four (4) sealed bids were received for the construction of this project as shown on
the following table. The Engineer's Estimate was $690,000.
CONTRACTOR
Copp Contracting
Manhole Adjusting
International Surfacing Systems
All American Asphalt
TOTAL
$569,403
$617,688
$633,705
$636,259
The lowest responsive bidder, Copp Contracting, proposed using a terminal blend rubberized chip
seal instead of the ARAM rubberized chip seal which was specif'ed in the contract documents. Unlike
ARAM, the proposed terminal blend binder is a homogeneous material which is produced at the
petroleum plant. Although the two rubber binders do not have identical chemical formulations, both
products contain 18% minimum rubber content. Both rubber binders are spray-applied to the road
surface to seal the road surface and hold the aggregate (chips). Also, both rubberized chip seals use
3/8-inch medium chips which are preheated and coated with asphalt.
Copp's proposed terminal blend rubber binder is not currently in the Standard Specifications for
Public Works Construction (Greenbook). However, at the City's request, the material supplier,
Paramount Petroleum, performed the Greenbook laboratory tests which are designed for ARAM
rubber binder. The results verified that the terminal blend rubber binder meets the Greenbook test
requirements for ARAM rubber binder.
Staff contacted agencies that have used the proposed terminal blend rubberized chip seal.
The material received positive reviews from all agencies contacted, including Rancho Cordoba,
Kern County, and Santa Cruz. Caltrans is currently conducting field tests on various chip seal
binders, including terminal blend rubber binder. Staff visited the Caltrans field test site at Imperial,
California, and found that the terminal blend chip seal was performing adequately.
FOR CITY CLERKS USE ONLY.
COUNCIL ACTION: APPROVED
DENIED
CONTINUED
WITHDRAWN
AMENDED
E/
D
D
D
D
CONTINUED TO DATE SPECIFIC
CONTINUED TO DATE UNKNOWN
RETURNED TO STAFF
OTHER -SEE MINUTES
D
D
D
D
DEPARTMENT CONTACT: Jon Schauble, (760) 602-2762, ischa@ci.carlsbad.ca.us
Page 2
The second low bidder, Manhole Adjusting, sent a letter to City Council on May 29, 2008 protesting
the award of contract to the low bidder, Copp Contracting. In the letter, Manhole Adjusting claims that
the two products in question are not equal. However, based on the evidence outlined above, it is
staff's professional opinion that the terminal blend rubberized chip seal is equal to the ARAM
rubberized chip seal. Public Contract Code Section 3400 clearly states "...bidders may furnish any
equal material, product, thing, or service" regardless of whether or not the contract documents make
reference to a specific material, product, thing, or service.
Manhole Adjusting has also questioned the ability of the low bidder to place the material without
violating air quality regulations. Manhole Adjusting has not provided any evidence to support their
claim. Paramount Petroleum has submitted a response to Manhole Adjusting's letter. In their letter
dated May 30, 2008, Paramount Petroleum has addressed the issues brought forth by Manhole
Adjusting. Both letters are included as exhibits.
References for the low bidder were contacted and Copp Contracting received unanimous praise for
being a "very professional" and "highly recommended" family-operated business. Staff has completed
its review of the contract documents and has determined that they are in order; therefore, staff
recommends that Copp Contracting be awarded the contract.
ENVIRONMENTAL IMPACT:
This project is categorically exempt from the environmental review process under CEQA Guidelines
Section 15301 Class 1(c) Existing Facilities, of the Public Resources Code (California Environmental
Quality Act).
FISCAL IMPACT:
The construction costs associated with this project are summarized in the following table.
Construction Contract
Construction Contingency (10%)
Project Admin., Testing & Inspection (10%)
TOTAL ESTIMATE PROJECT COST
AVAILABLE PAVEMENT MANAGEMENT FUNDS
ADDITIONAL APPROPRIATIONS NEEDED
$569,403
$56,940
$56,940
$683,283
$1,543,950
-0-
Sufficient funds are available in the TransNet Local Fund to complete Project 6001 (08SS). The unused
funds will be returned to the Pavement Management Program for future road resurfacing projects.
EXHIBITS:
1.
2.
3.
4.
Location Map.
Resolution No.2008-181 awarding the contract to Copp Contracting for the
construction of the 2008 ARAM and Slurry Seal Project, Project No. 6001 (08SS).
Letter from Manhole Adjusting dated May 29, 2008.
Letter from Paramount Petroleum dated May 30, 2008.
LOCATION MAP
STREETS TO BE SEALED
NOT TO SCALE
PROJECT NAME
2008 ARAM AND SLURRY SEAL
PROJECT
NUMBER
6001-08SS
EXHIBIT
1
DRAWN BY: SCOTT EVANS, CARLSBAD ENGINEERING DEPT. 5/22/08 C: \CAPITAL\SCHAUBLE\6001-08SS 2008 SLURRY SEAL\6001-08SS 2008 SLURRY SEALDWG
1
RESOLUTION NO. 2008-181
2
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
3 CARLSBAD, CALIFORNIA, AWARDING A CONTRACT FOR
THE CONSTRUCTION OF THE 2008 ARAM AND SLURRY
4 SEAL PROJECT NO. 6001 (08SS).
5 WHEREAS, on March 18, 2008, the City Council of the City of Carlsbad approved plans
6 for the construction of the 2008 ARAM and Slurry Seal Project No. 6001 (08SS) and authorized
7 bidding; and
o WHEREAS, the City Council has determined it necessary, desirable, and in the public's
best interest to construct the 2008 ARAM and Slurry Seal Project No. 6001 (08SS); andy
WHEREAS, four (4) sealed bids were received on April 28, 2008 by the City of Carlsbad
10
for the construction of the 2008 ARAM and Slurry Seal Project No. 6001 (08SS); and
11
WHEREAS, the lowest responsive and responsible bid to construct said project was
12 submitted by Copp Contracting in the amount of $569,403; and
13 WHEREAS, Copp Contracting proposed an alternative rubberized chip seal to the
^ specified rubberized chip seal and the Engineering Department has determined that the proposed
15 terminal blend rubberized chip seal is equal to the specified ARAM chip seal; and
16 WHEREAS, a bid protest was received from Manhole Adjusting and the bid protest was
17 rejected by the Engineering Department; and
IQ WHEREAS, there are sufficient funds available in the Pavement Management Program
to complete the project; andi y
WHEREAS, subsection 3.28.040(C)(6) of the Carlsbad Municipal Code authorizes the
City Manager to approve change orders in the amount equal to the contingency set at the time of
21
project award.
22
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Carlsbad,
23 California, as follows:
1. That the above recitations are true and correct.
25 2. That the bid protest is rejected and the City is accepting the proposed terminal
26 blend chip seal as an equal to the ARAM chip seal.
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1 3. That the low bid of $569,403 submitted by Copp Contracting for the construction
2 of the 2008 ARAM and Slurry Seal, Project No. 6001 (08SS), is accepted and the Mayor is hereby
3 authorized to execute a contract for this project.
4. That the City Manager is hereby authorized to approve construction change4
orders up to $56,940.
5
5. That the award of this contract is contingent upon the bidder submitting the
6
lowest responsible bid executing the required contract and submitting the required bonds and
7 insurance policies, as described in the contract, within twenty (20) days of adoption of this
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PASSED, APPROVED AND ADOPTED at a Regular Meeting of the City Council
of the City of Carlsbad on the 24th day of June, 2008, by the following vote to wit:
AYES: Council Members Lewis, Kulchin, Hall, Packard and Nygaard.
NOES: None.
ABSENT: None.
ATTEST:
M. WtfODJ City Clerk'^-~/
May 29 2008 1 :08PM MRNHOLE RDJUSTIMG INC.323 558 8020 p. 2
$ ADJUSTING
S ,/ GENERAL ENGiNEERING UC. 398443
ASPHALT RU8BER APPLi GATORS
VOICE: 323-558-8000 FAX: 323-556-8001
9500 BEVERLY RD., PICO RiVERA, CA 90660-2135
ViA FACSIMILE (750) 720-4917
ORIGINAL BY FEDEX 8617 0:49 4254
May 29 2008
CITY OF CARLSBAD, CA
ATT: MEMBERS OF THE CITY COUNCILL
! 200 CARLSBAD VILLAGE DR.
CARLSBAD CA 92008
RE: Protest of Award of 2008 ARAM and Slurry Seal Project,
Contract No. 6001 (08SS), Bid No. PWS08-27ENG to Copp Contracting Inc.
Dear Council Members:
This ieuer is our protest to the proposed award of the above referenced contract to Copp
Contracting Inc. (Copp).
The basis of the protest is as follows:
Item 1: The City of Carlsbad (City) has perhaps, inadvertently, approved as an "equal" what is
actually an alternate product (terminal biend binder) to the specified material in the specifications
(asphalt-rubber). In the manner this approval was made, it deprived the other three bidders from
submitting, and the City from receiving, a competitive price for the process now being
contemplated for use by the City.
Item 2: The City has not been offered any assurance that a terminal blend binder can be applied
in accordance with air quality rules and regulations.
The following elaborates upon the previous referenced items.
Item 1 - The City has approved an experimental material, terminal blend binder, which although
may be acceptable for the City's use, is not the equal of the originally specified material, asphalt-
rubber binder. There are numerous technical differences between these materials, such as cmmb
rubber modifier content, application rates, etc., which can be further detailed if requested. The
main issue of this protest, is that if our firm, as a bidder, had the opportunity to submit pricing for
the product now being considered, our pricing would be considerably lower than the bid price
submitted by Copp. The City did not receive the benefit of competitive bidding on the terminal
blend process, i.e. multiple bidders on the terminal blend binder would have resulted in a
substantially lower bids to the City.
The integrity of the bidding process must be one carefully safeguarded by any Public Works
agency. If contractors can submit a bid for an unspecified product and/or process, and then a
determination is made that a substitution would be allowed before award, it places the other
bidders at an unfair bidding disadvantage. If the City had specified a lesser product as to what it is
now contemplating as an equivalent, our firm would have submitted a lower bid.
Z'-.ESPERANZASDataVSOOS CORR\€rties\City of Cadsbad\M«mb<;rs vCGih- Counei! Itr 5-29-08 rev.cbc
May 29 20O8 1:08PM MHMHOLE flDJUSTING INC. 323 558 8020 p.3
Item 2 - As you may be aware, the applications of hot applied seal coats usually require emission
control equipment. The industry was advised that strict enforcement would be administered for
violations of this type, (See California Air Resources Board letter dated December 9, 2005.)
Many cities require a certification form (See attached certification form) to be submitted with the
bid to avoid perspective job delays or shutdowns due to air quality violations.
As you are probably aware, this is a serious concern lacing the general population of California,
(See L.A. Times article enclosed),
In summary, if the City wishes to specify a lesser product, that is the City's prerogative,
However, the City should specify in. the imitation to bid exactly what it wants, so all bidders can
compete equally and the City receives the benefit. Terminal blend binder should be solely
specified and not commingled with a more expensive superior product such as asphalt-rubber.
Our firm respectfully requests that all bids be rejected, specify in revised bid documents precisely
what the City wishes to utilize, and re-bid this project. .
%
1 am confident the City would receive much better prices than that currently presented by the low
bidder if all other bidders were bidding on a level playing field.
This letter will constitute our request to receive copies of communication between the City of
Carlsbad and Copp, as well as to receive notification of and the right to participate in any
hearings on these issues.
Thank you in advance for your prompt attention to these jraatters.
na .f
/ John Corcoran
\ / President
Enclosures:
California Air Resources Board letter dated December 9, 2005
and Advisory dated December 2005.
Form: Designatiaa-'Certifieatian of Asphalt Rubber Binder Applicator.
- L.A. Times article dated 5/23/2008:
Up to 24,000 deaths a year in California are linked to air pollution.
JC/ei.
2:'£SPERAN2A'iDala\2QOS CORR'.CitiMv.City of CvUbachMeoibcrs of Ciry Council ft:5-29-Og rev.dec
14700 Downey Avenue
PARAMOUNT asubsidiaryof P.O. Box 1418
PETROL ELM A LOJUJ S A Paramount, CA 90723
^^"^ (562)531-2060
City of Carlsbad, CA
Att: Members of the City Council
1200 Carlsbad Village Dr.
Carlsbad, CA 92008
May, 30 2008
RE: Response to Protest Letter of Award of 2008 ARAM and Slurry Seal Project,
Contract No. 6001 (08SS), Bid No. PWS08-27ENG to Copp Contracting Inc.
Dear Council Members:
This letter is a response to the protest letter submitted by Mr. John Corcoran, President
Manhole Adjusting, to the bid award referenced above to Copp Contracting Inc.
In his letter on May 29, 2008 Mr. Corcoran based his protest on two main items as
follows:
Mr. Corcoran wrote:
The basis of the protest is as follows:
Item 1: The City of Carlsbad (City) has perhaps, inadvertently, approved as an "equal" what is
actually an alternate product (terminal blend binder) to the specified material in the specifications
(asphalt-rubber). In the manner this approval was made, it deprived the other three bidders from
submitting, and the City from receiving, a competitive price for the process now being
contemplated for use by the City.
Item 2: The City has not been offered any assurance that a terminal blend binder can be applied
in accordance with air quality rules and regulations.
The following elaborates upon the previous referenced items.
Item 1 - The City has approved an experimental material, terminal blend binder, which although
may be acceptable for the City's use, is not the equal of the originally specified material, asphalt-
rubber binder. There are numerous technical differences between these materials^ such as crumb
rubber modifier contest, application rates, etc., which can be further detailed if requested. The
main issue of this protest, is that if our firm, as a bidder, had the opportunity to submit pricing for
the product now being considered, our pricing would be considerably lower than the bid price
submitted by Copp. The City did not receive the benefit of competitive bidding on the terminal
blend process, i.e. multiple bidders on the terminal Wend binder would have resulted in a
substantially lower bids to the City.
Response:
1) Contrary to what was stated in item 1 above, Terminal blends rubberized asphalt
binders, are not "experimental materials", as they have been is use for many years in the
State of California, Arizona, Texas, Florida, etc. Terminal blends are now and have been
since 1998 specified under the Standard Specifications for Public Works "Greenbook".
Additionally, other California Counties and Cities, (San Diego County, Los Angeles
County, Sacramento County, City of Stockton, City of Santa Cruz, etc), have specified
and used terminal blend rubberized asphalt binders.
2) Terminal blends are rubberized asphalt binders with varying recycled crumb rubber
content, which differ according to specific applications and uses, ranging from 5% to
20% rubber content. The above referenced project specifies a rubber content of 18% min.
3) Terminal blends are manufactured at the refinery or terminal and delivered to the job
site by trucks for applications. Unlike the so called "Wet Process", terminal blends do not
require any special equipment, rubber introduction equipment, specialized air quality
vapor recovery equipment and or specialized trucks; hence, the cost to do a project, using
terminal blend rubberized asphalt binder is significantly lower.
4) Terminal blend materials have been bid and accepted as an equal or better product to
other Slurry/Chip Seal products and have been used successfully and cost effectively in
many California cities including; Santa Cruz, Stockton, Sacramento, Rancho Cordova
and Caltrans District 11. In fact, the City of Santa Cruz was awarded the 2007 Chip Seal
project of the year by the California Chip Seal Association, using Terminal Blend Chip
Seal binders. In the process, Santa Cruz saved over $400,000 on this one project
(attached please find report). Offering terminal blend rubberized asphalt binders to cities
and counties in addition to the "Wet Process" will offer the Cities, Counties, and State
more competitive bidding opportunities.
5) Use of terminal blend rubberized asphalt binders does not require any specialized
equipment to apply the Slurry/Chip Seal unlike the "Wet Process" which requires very
specialized and patented equipment, thus the use of terminal blend rubberized asphalt
binders has and will open the doors for all contractors to bid on these projects, without
discriminations.
Mr. Corcoran wrote:
Item 2 - As you may be aware, the applications of hot applied seal coats usually require emission
control equipment. The industry- was advised that strict enforcement would be administered for
violations of this type, (See California Air Resources Board letter dated December 9, 2005.)
Many cities require a certification form (See attached certification form) to be submitted with the
bid to avoid perspective job delays or shutdowns due to air quality violations.
As you are probably aware, this is a serious concern facing the general population of California.
(See LA. Times article enclosed).
Response:
Some of the reasons that special equipment is required when applying Hot Applied Chip
Seal using the Wet Process is; 1) the Wet process Slurry/Chip Seal must be applied at
very high temperatures as high as 425°F or more, in order to insure the complete and
proper coating of the aggregate chips.
2) To this point terminal blends are typically handled and applied at temperatures of 325-
350°F, because unlike the Wet Process, the tire rubber is fully incorporated in the oil and
full coating of the aggregate is achieved easily.
3) Terminal blends are similar in application to Polymer modified asphalt chip seals and
at these lower application temperature, do not require any specialized patented vapor
recovery system on distributor trucks for emissions control.
4) The Wet process method uses "extender oils" with the binder, which is typically a
lower Flash point product having a higher mass loss. At temperatures 425°F or more a
blue smoke effect is created and hence special equipment is required to control the
emissions coming from the oil.
6) On the other hand, terminal blends are binders using no extender oil and are similar to
any hot mix asphalt applications.
Mr. Corcoran wrote:
In summary, if the City wishes to specify a lesser product, that is the City's prerogative.
However, the City should specify in the invitation to bid exactly what it wants, so all bidders can
compete equally and the City receives the benefit. Terminal blend binder should be solely
specified and not commingled with a more expensive superior product such as asphalt-rubber.
Response:
One final comment on quality assurance and quality control; Terminal blend rubberized
asphalt binders are produced in batches, tested, and certified to State requirements before
being shipped to the job site. A certificate of compliance is issued with each truck load
which states all product specifications and rubber content. Furthermore, terminal blends
are performance graded materials (PG graded as required by the State) where as Wet
Process products are not. There is truly only one control point on the process for Wet
Process "ARAM", that being the field viscosity test, which does not indicate anything
about the performance, life or aging of the binder, where as Performance graded terminal
blends requires and follows specific tests that indicate performance, aging and life of the
binder.
The terminal blends (PG64-28TR, PG70-22TR, and PG76-22TR) have been approved by
the California Integrated Waste Management Board which recently awarded a $400,000
grant fund to Los Angeles County forHot Applied Chip Seal using PG70-22TR.
We believe that the City of Carlsbad will have a better performance material which is
tested and certified, environmentally friendlier product which does not require any
specialized patented equipment for construction and vapor control, and provide for more
competitive bidding from different companies in the State, thereby, reducing the cost and
stretching the tax payers dollar as does the above referenced project.
Thank you for your attention.
Jean Azoury
Group Manager
Attachments:
- City of Santa Cruz job report.
- Kern County job report.
- Contractor email letter on temperature applications.
Note: The materials specification and requirements were submitted to the City engineer
copies and additional information is available upon request.
References:
Dan Chung, PE, Kern County Roads Dept, (661) 862-5188, cell (661) 345-0597
Steve Olsen, Intermountain Slurry Seal, (916) 439-3129
Josh Spangrud, PE, City of Santa Cruz, jspangrud@ci.santa-cruz.ca.us. (831) 420-5178
Che Corlett, Graham Contractors, Inc., che@grahamcontractors.com. (408) 293-9516
Shawn Rizzutto, Caltrans, District 11, (760) 355-0430
Hans Ho, Telfer Oil, (925) 766-8530
Don Goss, Valero, (310) 518-4000
Merril Buck, City of Tracy, (209) 831-4633
Dennis Copp, roadcon @ earthlink.net, Copp Construction
2008 ARAM and Slurry Seal Project No.
All Receive-Agenda Item# C?
For fhe Information of the:
CTTY COUNCILK. rM rA tsr>rAssLCM,
Council Question #1: Are temperature requirements the same for both products?
Answer: No. Terminal Blend rubber binder is applied at 325 degrees F, while ARAM
binder is applied between 375 and 425 degrees F. The reason for this difference in
application temperatures is because the Terminal Blend arrives at the job site with the
rubber already fully digested into the binder, while the ARAM process involves blending
the rubber into the binder at the job site.
Council Question #2: What is Caltrans' position on Terminal Blend?
Answer: On June 16,2008 at a meeting in Sacramento, Caltrans adopted a new standard
specification for asphalt rubber binder for use with chip seal applications. This new
Caltrans specification allows for Terminal Blend to be used on all Caltrans projects.
Council Question #3: Will Terminal Blend last 5 years, same as ARAM? Can we get a
5-year warranty with Terminal Blend?
Answer: The expected service life for Terminal Blend and ARAM chip seals is
approximately 6 to 8 years. This project will place a slurry seal on top of the chip seal.
This combination is often referred to as a cape seal and has an expected service life of
approximately 8 to 12 years.
The City's Public Works Contract contains a faithful performance/warranty bond which
remains in full force and effect for a one-year warranty period. If the City wants a 5-year
warranty period, staff could negotiate with the low bidder to receive such an extended
warranty.
Council Question #4: Does any other agency have Terminal Blend in place for 5 years
or more?
Answer: Yes. See attached list from Paramount Petroleum.
Q)ECS OS OWE
JUN 2 4 2008
CITY OF CARLSBAD
CITY CLERK'S OFFICE
P
1
TIRE RUBBER PRODUCTS SUPPLIED IN SO. CALIFORNIA
AGENCIES CONTACTS/ PRODUCERS
PRODUCTS/TIME LENGTH
Los Angeles County Rd. Dept. Erik Updyke
MAC-10TR - over 10 yrs.
Orange County
Caltrans -Dist. 11
San Diego County
CityofPalmdale
City of Lancaster
City of Hawthorne
City of Long Beach
City of Moorpark
City of Irvine
City of Lawndale
City of Santa Monica
City of Apple Valley
City of Hesperia
Buddy Coover -
MAC-10TR- over 5 years
Sully Miller
Vulcan
Holliday Rock
RJ Noble
Hanson
Asphalt Construction
Granite Construction
Silvia Construction
Art Padilla (858) 467-4050 Materials Eng.
Joe Odel (858) 467-4057 Materials Lab
Larry Horsman (858) 694-2842
Joe Goldhammer, ret., 619-286-0624
AC155TR 10 +years
over 5 yrs.
over 5 yrs.
over 5 yrs.
over 5 yrs.
over 3 yrs.
over 5 yrs.
over 4 yrs.
over 2 yrs.
over 2 yrs.
over 2 yrs.
Camp Pendelton, US Marine Corp. over 5 yrs.
City of Carlsbad Skip Hammann (760)602-2780
Rick Wojucka (760) 594-7658
CityofOceanside JimKnowlton (760)966-4747x32
City of El Cajon Dennis Davies(619) 441-1661
Taylor Coffroth (619) 441 -1653
TIRE RUBBER PRODUCTS SUPPLIED IN SO. CALIFORNIA
City of Encinitas
City of Escondido
Texas - over 10 years
Arizona - over 10 years
2008 ARAM and 2008 ARAM and Slurry Seal Project Slurry Seal Project No. 6001No. 6001June 24, 2008June 24, 2008
Project DescriptionProject DescriptionPavement Management ProgramPavement Management ProgramTwo pavement rehabilitation projects per Two pavement rehabilitation projects per yearyearStreets were selected based on age and Streets were selected based on age and existing conditionexisting conditionRehabilitation strategy: Chip Seal covered Rehabilitation strategy: Chip Seal covered by a Slurry Sealby a Slurry Seal
Types of Chip SealTypes of Chip SealConventional Chip SealConventional Chip SealPolymer Modified Chip SealPolymer Modified Chip SealRubberized Chip Seal Rubberized Chip Seal Asphalt Rubber Aggregate Membrane Asphalt Rubber Aggregate Membrane (ARAM) (ARAM) Terminal Blend Rubberized BinderTerminal Blend Rubberized Binder
Rubberized Chip SealRubberized Chip SealAsphalt Rubber binder sprayAsphalt Rubber binder spray--applied to applied to pavement surfacepavement surfaceScreenings (3/8Screenings (3/8””crushed rock) placed and crushed rock) placed and rolledrolledSeals the road and provides a wearing Seals the road and provides a wearing surfacesurfaceExtends life of existing pavementExtends life of existing pavement
Chip SealChip Seal
ARAM ARAM vsvsTerminal Blend (TB)Terminal Blend (TB)SimilaritiesSimilaritiesBoth utilize asphalt rubber binders (18% min)Both utilize asphalt rubber binders (18% min)Both use 3/8Both use 3/8””preheated and preheated and precoatedprecoatedchipschipsDifferencesDifferencesTB is manufactured at the refinery where TB is manufactured at the refinery where rubber is completely digested into the asphalt rubber is completely digested into the asphalt binder.binder.ARAM is made at the job site where rubber is ARAM is made at the job site where rubber is partially digested into the asphalt binder.partially digested into the asphalt binder.
ExamplesExamplesAdd photos of 2006 streetfrom Carlsbad
Evaluation of BidsEvaluation of BidsPublic Contract Code Section 3400Public Contract Code Section 3400“…“…bidders may furnish any equal material, bidders may furnish any equal material, product, thing, or service.product, thing, or service.””Contract General Provisions Section 4Contract General Provisions Section 4--1.61.6““The Contractor may offer any material, The Contractor may offer any material, process, or equipment considered to be process, or equipment considered to be equivalent to that indicated.equivalent to that indicated.””““The Engineer will evaluate the results and The Engineer will evaluate the results and determine if the substitute item is equivalent.determine if the substitute item is equivalent.””““The EngineerThe Engineer’’s findings shall be final.s findings shall be final.””
Terminal Blend PerformanceTerminal Blend PerformanceTB passed the SSPWC (TB passed the SSPWC (GreenbookGreenbook) ) laboratory tests for ARAM Binder.laboratory tests for ARAM Binder.TB used at various AgenciesTB used at various AgenciesCity of Rancho Cordova, Kern County, City of City of Rancho Cordova, Kern County, City of Santa Cruz, City of Stockton, and SacramentoSanta Cruz, City of Stockton, and SacramentoPositive reviews from all agencies contactedPositive reviews from all agencies contactedSite visit to Caltrans chip seal test site Site visit to Caltrans chip seal test site near Imperial, Californianear Imperial, California
ConclusionConclusionARAM and TB are equalARAM and TB are equalBoth utilize asphalt rubber binders (18% min)Both utilize asphalt rubber binders (18% min)Both use 3/8Both use 3/8””preheated and preheated and precoatedprecoatedchipschipsTB meets the contract requirementsTB meets the contract requirementsTB received positive reviews from other TB received positive reviews from other agenciesagenciesStaff recommends that the contract be Staff recommends that the contract be awarded to the low bidder: awarded to the low bidder: CoppCoppContractingContracting
Questions?Questions?