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Home My WebLink About2001-10-15 City Council (8)City of Palo Alto City Manager’s Report TO:HONORABLE CITY COUNCIL FROM: DATE: SUBJECT: CITY MANAGER DEPARTMENT: COMMUNITY SERVICES OCTOBER 15, 2001 CMR:386:01 APPROVAL OF CHANGE ORDER NO. 2 TO CONTRACT NO. Cl129753 WITH BRAGATO CONSTRUCTION COMPANY IN THE AMOUNT OF $28,131 TO PROVIDE REPLACEMENT OF FAILED ASPHALT WALKWAY SURFACES OF THE DUCK POND PARKING LOTS RECOMMENDATION Staffrec0mmends that Council approve and authorize the City Manager or his designee to negotiate and execute a change order to the contract with Bragato Construction Company for related, additional but unforeseen stabilization of the subgrade surface of the Duck Pond parking lots, the total value of which shall not exceed $28,131. DISCUSSION In November 2000, Council approved a contract for the paving and rehabilitation of the two parking lots adjacent to the Duck Pond (Attachment A). The scope of the work includes removing the existing asphalt surface; regrading and properly compacting the subgrade surface; paving the surface; creating bio-swales for the collection and filtering of run-off water; and applying stripes, curbs and directional arrows. Construction on this project started March 19, 2001, with the removal of the existing asphalt surface and the top twelve inches of subgrade material. In the process of regrading the lots, the contractor found that the final grade elevations on the plans did not match existing elevations of the adjacent existing asphalt walkways. The existing walkways will iaot drain as designed to the valley gutter and bio-swales. Furthermore, the edges and portions of the walkways have failed and pose a safety hazard to pedestrians. A bid from Bragato Construction was requested for this additional work. The bid price of $28,131 has been evaluated by both the City’s design consultants and Public Works Engineering. Both the contractors and City engineers believe the bid is reasonable. Staff hopes to proceed at once with the work covered by the change order in order to quickly resume construction to avoid inconvenience for the public. A large informational CMR:386:01 Page 1 of 2 construction sign is posted at the edge of the Duck Pond to explain the scope of work and project timeline to the public. This information will be updated to reflect the unexpected delays in construction. RESOURCE IMPACT Funds for the change order are available in the current Capital Improvement Program for Open Space parking lot and road improvements (Project 10003). This change order amount is an increase to the original approved contract change order authority, bringing the total change order authority to $115,658, which represents 85 percent of the contract amount. POLICY IMPLICATIONS Recommendations of this staff report are consistent with existing City policies. ENVIRONMENTAL REVIEW This is a maintenance project and is therefore categorically exempt from CEQA. ATTACHMENTS Attachment A: Attachment B: Contract Amendment #2 CMR:426:00 PREPARED BY: DEPARTMENT HEAD: -- ~/ ’ GREG"~E~TS Superintendent, Open Space & Sciences Director of Community Services CITY MANAGER APPROVAL: EMIL: Assistant City Manager CMR:386:01 Page 2 of 2 8505~i 07;Attachment A 500 Bracero Road San Cedes CA 94070 650.592.2107 Fax 10ragatoconstructlon @ pacbell.net www.bragatoconstruction.com [Cu~.__~orner Name \ Address It City of Pale Alto Open Spac 14~ 1 Middlefield Road [Palo~o, CA 9~301 [A~’. Greg PROPOSAL CONTRACT 9/19/200t 245 We are pleased to provide ~-~ with this proposal for the removal and replacement or thfled asphalt walk~’ays located al gaylands. Soufl~ Lot:13,656.00 D~mo and rcragvc existing ; ~phalt and base mat~ri~l to a depth of 7" (inches). Re compact existing sub-grade material. Furnish and install V’ (inches) of new class 2 bascrock. Furnish, install and compact 3" (inches) of new asphalt concrete. Area apprt ~ 2,075 sq.R. ~,Iorth Lot:14,475.00 )emo and remove existing ~ ~phalt, base material and existing fill ~ a depth of 7" (inches). Also overexcavate further where new ",,alley gu tee and existing pathway show grade change. Furnish and install 4" (inches) of new class 2 baaeroc~. £pread an,, compact 3" (inches) of new asphalt concrete. Area ia approx 1.820 sq.ft. Wood Plomters:0.00 Dcmo and remove wood pl~ ~ters in lhe Nurth Park.trig Lot. No Charge ,l _OtTEXas ~NO CoNornoNs a~$2& Items proposal, m.30e by ~ra~ato C ~slruction Cor.p~.U. Inc.. hefc~l~f!.or referred to as ~he contractor, v,~ll expire within 30 Gay~ from the dale r’~¢oot. a=:ceFmd wi~in said lime, The cu.’ 3mar agree3 to fJ~y tl’~e cha~ge_q f~ the above dcseribc~ work upon compta~iel’i or [h6 worK, Any extra casL~ Will only ex~.CUtL-’d upon written change cod{ and will become an extra cnarg~ over and above the es~Jmate. Progress payments Ior w~rk In progress shall be made by the l 0~n of th6 month fo~lowin9 the. ~ am of billing No adjustment o~ allowance will be. made unless a claim in v~ting iS Bed yell1 the contract&" al n~s office ten {10) days from completion orw( k. NO radii or adjustment will b~ allowed by the con~;racwx unless made in warms] by an autnC~ zen agent of me contractor, The cus4omer shall not be allowed ~ )y offse! or credit for personal injuries sustalneO ~ f~ propert~ damage claimeO against the cc~tracto¢ since the contractormaintains public tiabil~ insurance i the event payment is not made in aco&,dance with terms and condi’Jons set toPJ~ herein, lne unpa=O balance shall bear delinquency charge .3t 2% per mot] ~ and i[~ [he even[ an action be commenced for tl~e collection o~ the unpaid balance, ~e customer agrees to pay reasonable attorney’s fees DISCLAIMER tf the asphalt or the Concrete is thick r than the total depth describecl In the base bid. or #the subsurface is wet and mr. subbase will not s~abilize aRe~ compaction,then any additio~ql costs for further =xcava~=on anO replacement [0 p’operly COmpact the subsuffacu ~hall b~ :~gol|aled with the owner and a representative of 8ragato CensbuC0on Company, In( A change order 5hall be signed a[td issued for further cos[. The earth-eater denies end disclaims any and all liabili~" and resp~;~Sibillty i’0~ any and all deruL;t.~ ~Jamages. repairs, replacement and!or failure of ~aid work, pre.~ent o~ future, due to sub~.,urface Conditions who[see.vet. ur~0erS[oxx:lthatthecnotracl.orv,~ll r =~beresp~ns~blef~nydamago~au~ed[~nyundergr~undservicesinCOnnecti~nwiththeab~vementj~nedc~nstruc~n. Said damages will be tf’re re’spon~t: iDJ of the customer. Contract Accepts Ice:wa accept the following proposal and aggree to all information described above. Please note: No work will commence until signed acceptance is received. Signature C#ml~ny N~r~ -.D~ta ur~oertneMECHANICSLIEN LA’ i{Cal~f~-nmCMICode, Sectlen 3109eL.~;)a.ycentrac.BIll, GATe ~on~l~u~tl~ll C~ml~ln~, In, t~. 5ubc0nEac[or, E]be~, .~up~l ~" or otJ3er [:~rr, on who P0etp~ to imp~vc you p{oper~ but is not paid ror his work or supplie has a right to enforce t~ claim against your prop~ly. This n’E’.ans that. after a cowl heafinc, your proper~ could bQ g~QId by a cou~t ol~cer and pro-By ~,=s,,... ~ r.eeds of the sale us.e~ to gatJsty ie m~3ep[edness. ]l~is can happen ever~ if you have pai(l year own Contractor io frill, ff t~e IDCOi3LrBctOf, laborer, c~ supplier remains unpairt Attachment B TO: City of Palo Alto City Manager’s port HONORABLE CITY COUNCIL FROM:CITY MANAGER DEPARTMENT: COMMUNITY SERVICES DATE:APRIL 30, 2001 CMR:209:01 SUBJECT:APPROVAL OF A CHANGE ORDER NO. 1 TO CONTRACT NO. Cl129753 WITH BRAGATO .CONSTRUCTION COMPANY IN THE AMOUNT OF $66,527 TO PROVIDE UNFORESEEN STABILIZATION OF THE SUBGRADE SURFACE OF THE DUCK POND PARKING LOTS RECOMMENDATION Staff recommends that Council approve and authorize the City Manager or his designee to negotiate and execute a change order to the contract with Bragato Construction Company for related, additional but unforeseen stabilization of the subgrade surface of the Duck Pond parking lots, the total value of which shall not exceed $66,527.00. This change order amount is an increase to the original approved contract change order authority, bringing the total change order authority to $87,527, which represents 65 percent of the contract amount. BACKGROUND In November 2000, Council approved a contract for the paving and rehabilitation of the two parking lots adjacent to the Duck Pond (Attachment A). The scope of the work includes removing the existing asphalt surface; regrading and properly compacting the subgrade surface; paving the surface; creating bio-swales for the collection and filtering of run-off water; and applying stripes, curbs and directional arrows. DISCUSSION Construction on this project started March 19, 2001, with the removal of the existing asphalt surface and the top twelve inches of subgrade material. In the process of regrading the lots, the contractor found that, because of the high water table around the Pond, the soil was -extremely unstable and shifting. Despite early soil samples during the design phase,., the extent of the soil unstableness was unexpected. Geotechnical engineers from Lowney Associates were consulted with to find appropriate methods to stabilize the base surface, and providing a subgrade that will remain firm under CMR:209:01 Page 1 of 2 the high volume of traffic that these lots experience. The consultants recommended that an additional six inches of soil be removed from the surface, Tensar geogrid material be installed, on top of which, six additional inches of new class 2 baserock be added and compacted. A bid from Bragato Construction was requested for this additional work. The bid price of $66,527 has been evaluated by both the City’s design consultants and Public -Works Engineering. Both the contractors and City engineers feels the bid is reasonable. Staff hopes to proceed at once with the change order in order to quickly resume construction to avoid inconvenience for the public. A large informational construction sign is posted at the edge of the Duck Pond to explain the scope of work and project timeline to the public. This information will be updated to reflect the unexpected delays in construction. RESOURCE IMPACT. Funds for the change order are available in the current Capital Improvement Program for Open Space parking lot and road improvements (Project 10003). POLICY IMPLICATIONS Recommendations of this staff report are consistent with existing City policies. .ENVIRONMENTAL REVIEW This is a maintenance project and is therefore categorically exempt from CEQA. ATTACHMENTS Attachment A: Attachment B: Contract Amendment # 1 CMR:426:00 PREPARED BY: GREG BETTS Superintendent, Open Space & Sciences PAUL T. THILTGEN Director of Community Services CITY MANAGER APPROVAL: Y HARRISON Assistant City Manager CMR:209:01 Page 2 of 2 TO: FROM: DATE: SUBJECT: Attachment A City of Pal lAito City Manager’s R6 rt HONORABLE C1TY COUNCIL CITY MANAGER DEPARTMENT: COMMUNITY SERVICES NOVEMBER 27, 2000 CMR:426:00 APPROVAL OF CONTRACT WITH BRAGATO CONSTRUCTION COMPANY IN THE AMOUNT OF $133,506 FOR PAVING OF THE DUCK POND PARKING LOTS,CAPITAL IMPROVEMENT PROGRAM PROJECT 10003 RECOMMENDATION Staff recommends that Council: 1. Approve and authorize the Mayor to execute the attached contract with Bragato Construction Company in the amount of $133,506 for the paving of two parking lots at the Palo Alto Duck Pond. 2. Authorize the City Manager or his designee to negotiate and execute one or more change orders to the contract with Bragato Construction Company for related, additional but 3. Unforeseen expenditures associated with the project, the total value of which shall not exceed $20,000. DISCUSSION Project Description The work to be performed under the contract is for the paving of the parking lots adjacent to the Duck Pond. Parking lots on the north and south side of the Duck Pond have not been resurfaced in more than twenty-five years, and have badly deteriorated. This project will completely reg;,=de the lots to properly collect run-offwater and channel it through naturally filtering bio-swales. The present ~-p~?oblems with pooling of water in the lots will be eliminated. Parking stalls have been designed to improve circulation and safety. Design engineers have worked with staff from the City’s Water Quality Control Division to integrate state-of-the-art techniques to reduce environmental effects from ran-off water. The project scope of the proposed work includes removing the existing asphalt surface, re- grading and properly compacting the subgrade surface, paving the surface, and applying stripes, curbs and directional arrows. Electrical and telephone conduits will be installed under the parking lots to facilitate the under-grounding of utilities in the future. CMR:426:00 Page 1 of 3 Staff hopes to begin construction in early December, as weather conditions permit. Following the award of contract, public notices will be posted at all entrances to the Duck Pond advising the public of the construction schedule and likely parking lot closures. Bid Process A notice inviting formal bids for the paving project was sent on October 3, 2000 to two builders’ exchanges and 27 paving contractors. The bidding period was 35 days. Bids were received from four qualified contractors on November 7, 2000, as listed on the attached bid summary (Attachment A). Bids ranged from a high of $257,877 to a low bid of $133,506. Contractors not responding indicated that they did not submit a bid because they either were too busy bidding for other jobs or because they did not feel their bids would be competitive. Staff has reviewed all bids submitted and recommends that the bid of $133,506 submitted by Bragato Construction Company be accepted and that Bragato Construction Company be declared the lowest responsible bidder. The bid is 8.9 percent below the engineer’s estimate of $146,500. The change order amount of $20,000, which equals 15 percent of the total contract, is requested to resolve unforeseen problems that may arise during the construction period. Staff checked references supplied by the contractor for previous work performed and found no significant complaints. Staff also checked with the Contractor’s State License Board and found that the contractor has an active license on file. RESOURCE IMPACT Funds for this project are available in the Capital Improvement Program Project 10003 for open space road and parking lot repair. POLICY IMPLICATIONS This recommendation does not represent any change to existing City policies. ENVIRONMENTAL REVIEW This project is exempt from the provisions of the California Environmental Quality Act under Section 15302 of the guidelines, and no further environmental review is required. All necessary permits from the California Fish and Game Department,. United States Fish and Wildlife Service have been obtained. Permits were not required for this project by the Bay Conservation and Development Commission, Regional Water Quality Board or Army Corps of Engineers. CMR:426:00 Page 2 of 3 ATrACHMENTS Attachment A: Attachment B: PREPARED BY: Bid Summary Contract Greg Betts, Superintendent, Open Space & Sciences DEPARTMENT HEAD: PAUL T. THILTGEN Director of Community Services CITY MANAGER.APPROVAL: ~rr~~ Assistant to the City Manager CMR:253:00 Page 3 of 3