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Home My WebLink AboutItem 3i: Contract with Ace Restoration and Waterproofing Inc. for Baldwin Reservoir 2 and 3 Repair Project AR V~44 oF� xi ryn VT p 9 ONiiii. `e r Of STAFF REPORT Public Works Services Department DATE: December 6, 2011 TO: Mayor and City Council FROM: Tom Tait, Public Works Services Director Prepared by: Ken Herman, Deputy Public Works Services Director Mark Rynkiewicz, Associate Civil Engineer SUBJECT: AUTHORIZE THE CITY MANAGER TO EXECUTE A CONTRACT WITH ACE RESTORATION AND WATERPROOFING INC. FOR THE BALDWIN RESERVOIR 2 AND 3 REPAIR PROJECT IN THE AMOUNT OF $806,938 Recommendation: Approve SUMMARY A routine inspection in 2002 of Baldwin Reservoirs 2 and 3 indicated some cracks in the concrete columns that support the concrete roof. A subsequent structural inspection in 2003-04 by the City's consulting structural engineer confirmed concrete spalling and cracks to the reservoir's columns supporting the concrete roof, as well as broken concrete around the connection points of the roof to the walls. Additionally, the reinforcement of the columns does not meet current seismic standards and the recommendation from the structural engineer was to conduct full scale analysis and structural retrofit. As a result, a structural analysis was conducted; bid specifications and plans were prepared. On October 17, 2011 notice inviting bids was published in the adjudicated paper and bid packages were picked up by several local contractors. On November 17, 2011, the City Clerk publicly open bids and ACE Restoration and Waterproofing Inc. was the lowest bidder. Staff recommends that the City Council authorize the City Manager to execute a contract with ACE Restoration and Waterproofing Inc. for the Baldwin Reservoir 2 and 3 Repair project, in the amount of $768,512 and issue a purchase order for the contract amount plus 5% contingency, totaling $806,938. BACKGROUND The Public Works Services Department manages the entire water system for the City of Arcadia. As a part of the water system, there are seventeen (17) water storage reservoirs, which hold the City's 40.8 million gallon reserve water supply. The Baldwin Reservoir Facility was built in 1962 and 1966, consists of two (2) partially buried rectangular concrete reservoirs that hold a combined capacity of 9.3 million gallons or 22.8% of the City's total water supply storage. The Baldwin Reservoir Facility is a vital Page 1 of 3 Mayor and City Council December 6, 2011 link in the City's water supply system by providing the main water supply for the west side of the City (Zone 2) between Colorado Boulevard and Duarte Road. A seismic inspection of the reservoirs in 1993 by the engineering consulting firm Montgomery Watson Harza (MWH) indicated that the reservoir showed no signs of seismic distress at that time. In 2002 Dive/Corr Inc. a underwater dive consultant who specializes in inspections of water reservoirs conducted a routine visual inspection for the Baldwin Reservoirs. This inspection revealed cracking in the columns supporting the concrete roof, as well as broken concrete around the connection points of the roof to the walls. The cracking, which was identified most likely, occurred as a result of the Northridge earthquake in 1994. Reinforced concrete structures are designed to show some cracking prior to the ultimate failure of the structure as a means of warning that the structure is being, or has been overloaded. A subsequent structural inspection in 2003-04 by the City's consulting structural engineer confirmed concrete spalling and cracks to the reservoir's columns supporting the concrete roof, as well as broken concrete around the connection points of the roof to the walls. Additionally, the reinforcement of the columns does not meet current seismic standards and the recommendation from the structural engineer is to conduct full scale analysis and structural retrofit. On October 19, 2010, City Council authorized the City Manager to enter into a Professional Services Agreement with Civiltec Engineering, Inc. for structural engineering analysis, technical support and plans and specifications for the Baldwin Reservoir Facility. DISCUSSION The Baldwin Reservoir 2 and 3 Repair project involves the structural reinforcing and strengthening of 125 columns (total for Reservoirs 2 and 3) inside the reservoirs, repair of broken or missing concrete, and the repair of rusty metal objects. Notice inviting bids was published in the adjudicated paper and bid packages were acquired by area contractors. The City Clerk publicly opened four (4) sealed bids on November 15, 2011 with the following results: Base Bid Alternate Rank Firm Location Amount Bid Amount 1 ACE Restoration and Waterproofing Inc. Fullerton $694,407 $ 768,512 2 Howard Ridley Co., Inc Chino $887,885 $ 803,402 3 Atom Engineering Construction, Inc. Hemet $818,023 $ 982,484 4 G Coast Construction, Inc. Encino $748,440 $1,164,440 An alternate bid using fiber reinforcing (Fiber warp) as a means to provide the necessary strengthening of the columns was included in the bid documents. Fiber wrap is a synthetic fabric, permeated with epoxy materials, used to confine existing concrete structural members and add tensile strength to the member. When applied to columns, Page 2 of 3 Mayor and City Council December 6, 2011 fiber wrap will effectively confine the columns, which are important in resisting seismic loads, add tensile strength, and waterproof the columns. It is staff's opinion that fiber wrap column strengthening as opposed to constructing concrete reinforced columns will add strength and eliminate future problems that often occur due to shrinkage cracking. Additionally, the use of fiber wrap also saves approximately 55,000 gallons of current water storage compared to the use of concrete reinforcing. Therefore, it is recommended that the bid alternate for fiber wrap be exercised during the execution of this contract. Staff has reviewed the bid documents for content and investigated the contractor's background and recent projects for competency. Staff has concluded that ACE Restoration and Waterproofing, Inc. is the lowest responsible bidder to perform the construction of this project. Therefore, staff recommends that the City Council award a contract to ACE Restoration and Waterproofing, Inc. for the Baldwin Reservoir 2 and 3 Repair project in the amount of $768,512 and issue a purchase order for the contract amount plus 5% contingency, totaling $806,938. ENVIRONMENTAL ANALYSIS This project consists of minor alteration of an existing public utility system with no expansion of the system and therefore qualifies as a Class 1 categorical exemption per 15301 (b) of the California Environmental Quality Act. Since this project is partially funded through an EPA grant, a Finding of No Significant Impact (FONSI) was also filed and approved for this project. FISCAL IMPACT Funds in the amount of $938,000 have been budgeted as a part of the 2009-10 Capital Improvement Program. In addition, this work is also partially funded by a United States Environmental Protection Agency (EPA) grant with total reimbursement funding available of$242,500. RECOMMENDATIONS 1. Award a contract to ACE Restoration and Waterproofing, Inc. for the Baldwin Reservoir 2 and 3 Repair project in the amount of $768,512 and issue a purchase order for the contract amount plus 5% contingency, totaling $806,938. 2. Authorize the City Manager and City Clerk to execute a contract in a form approved by the City Attorney. 3. Waive any informality in the bid or bidding process. Approved by: , Donald Penman, City Manager TT:KH:MR Attachment Page 3 of 3 CITY OF ARCADIA BALDWIN RESERVOIRS NO. 2 & 3 REPAIR PROJECT J z T69 0 a 'U F F El ins c . Grandview Ave. N BALDWIN RESERVOIR NO.2&3 Siena 0 edre BI. PROJECT LOCATION _,, Orange GroveAv _ NORTH ''' Hacienda Drive iCOTMILL JR HS Faolhgl BL 1. Ili—I;-- I * H 710 Foothill F All 4 1 J' " 4h� ( PM, � e / 3 a TV HALL Metro,i.,U / Z I f P a AO 8 e rbncmglon or. A A L iF 4 1110 Campus or. ' r�� P. 110 Oil ,C" Reel Av= A ; I. �- _ a a • r --,..—'.---,.„1 Longtlen Ave. y Lea Tunas Dr. Live Oak Ave f.A. e�k dt Co 7 a Ibn Dark • Oo ce •e1 LOCATION MAP EXHIBIT A