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HomeMy WebLinkAboutItem 3c - Orange Grove Disinfection System Upgrade€J�r STAFF REPORT Public Works Services Department DATE: June 3, 2014 TO: Honorable Mayor and City Council FROM: Tom Tait, Public Works Services Director By: Ken Herman, P.E. Principal Civil Engineer Tiffany Lee, P.E., Associate Civil Engineer SUBJECT: CONTRACT WITH MLADEN BUNTICH CONSTRUCTION COMPANY, INC. FOR THE ORANGE GROVE WATER PLANT DISINFECTION AND REHABILITATION PROJECT IN AN AMOUNT NOT TO EXCEED $125,500 Recommendation: Approve SUMMARY The Orange Grove Water Plant consists of four reservoirs that hold about 15 million gallons of water and four domestic groundwater wells. Two of these wells (Well No.1A and Well No.5) produce water that currently exceeds the Maximum Contaminant Level (MCL) for Volatile Organic Compounds (VOC's). Drinking water produced from these two wells must be blended with water from other Arcadia wells that do not have levels of these contaminants present in the water. In order to comply with the California Department of Public Health's (CDPH) drinking water requirements, the Orange Grove Water Plant Disinfection Rehabilitation Project involves the installation of chemical analyzers, valves, and modification of existing piping to ensure proper mixture of the water and to monitor the VOC's in the water leaving the Orange Grove Water Plant. To ensure the City is receiving the most competitive prices and quality service for this work, a formal bid was conducted and Mladen Buntich Construction Co. Inc. submitted the lowest responsive bid. It is recommended that the City Council authorize and direct the City Manager to execute a contract with Mladen Buntich Construction Co. Inc. for the Orange Grove Water Plant Disinfection and Rehabilitation Project in the amount not to exceed $125,500. DISCUSSION The Orange Grove facility is a vital component of the City's water supply and distribution system. It is the City's only source of supply from the Santa Anita Subarea of the Raymond Groundwater Basin. Orange Grove Disinfection Rehabilitation Project June 3, 2014 Page 2 of 3 Water pumped from two wells at the Orange Grove Water Plant (Well No.1A and Well No.5) is close to the Maximum Contaminant Level (MCL) for nitrates and Volatile Organic Compounds (VOC's). VOC's have been used extensively in the United States since the 1940's. VOC's are common components or additives in gasoline and diesel fuel and are used in the dry cleaning of clothing, in refrigeration units, and other petroleum -based products. The CDPH approved the City's Blend Plan that blends water from these two wells with other City wells to ensure that the City's drinking water meets all state and federal drinking water standards before it leaves the Orange Grove Water Plant. The goal of the project is to demonstrate and ensure that water from these wells is blended with water from other City sources that are much lower in VOC's, resulting in water that is well below the limits established by the Environmental Protection Agency (EPA) and enforced by the CDPH. In 2011, the CDPH added a condition of approval for the City's Blend Plan that requires the City to ensure that Wells 1A and 5 have a positive connection to their blending source. The only way to accomplish this in a way acceptable to the CDPH was to modify the piping from the wells to the reservoirs where blending occurs. This project accomplishes that goal as well as providing constant monitoring of the blended water to ensure that concentration levels are below the allowable limits. This is a common practice by municipal water agencies and has been approved by the CDPH. An alternative would be to provide treatment at our wells at a cost of approximately $700 per acre foot, which would equate to $770,000 annually for Orange Grove 1A and 5. A Notice Inviting Bids was published in the City's adjudicated newspaper and bid packages were distributed to contractors that perform this type of work. The City Clerk publicly opened four sealed bids on April 15, 2014, with the following results: Rank Bidder Location Bid 1. Mladen Buntich Construction Co. Upland, CA $125,500 2. Fleming Environmental Inc. Fullerton, CA $133,081 3. Perry C. Thomas Construction, Inc. Monrovia, CA $170,248 4. MMC, Inc. La Palma, CA $194,111 The bid documents were reviewed for content and the Contractors' background and recent projects were investigated for competency. Mladen Buntich Construction Co. Inc. was determined to be the lowest responsible bidder and is capable of completing the project for the City. Mladen Buntich Construction Co. has been in the general construction and pipe rehabilitation industry for almost 40 years. They successfully completed similar projects at several agencies such as Metropolitan Water District of Southern California, Los Angeles County Sanitation District, Inland Empire Utilities Agency, and Cities of Los Angeles (Department of Water and Power), Garden Grove, and Port Hueneme, Orange Grove Disinfection Rehabilitation Project June 3, 2014 Page 3 of 3 ENVIRONMENTAL ANALYSIS This project is considered a Class 1 exemption as defined in Section 15301(b) of the California Environmental Quality Act since the project consists of minor alteration of existing public facility providing public utility service and does not increase the capacity of the system. FISCAL IMPACT Sufficient funding of $200,000 from the Water Fund has been budgeted for this project in Fiscal Year 2013 -14 Capital Improvement Program. RECOMMENDATION It is recommended that the City Council authorize execute a contract with Mladen Buntich Construction Water Plant Disinfection and Rehabilitation Project $125,500. Approved: Dominic Lazzar City Manager Attachment: Project Location Map and direct the City Manager to Co., Inc. for the Orange Grove in an amount not to exceed Orange Grove Disinfection System Upgrade Project Project No.: 7286114 NORTH CITY OF ARCADIA RAND VIEW �y O� Q� h PROJECTSIE .RA RE BL ' LOCATION yy e 3 � 0 4r 0 ORANGE GROVE � S ¢ s z m z a,. F OTHII BL �- FOREST PARK COLORADO ST COLOR BL SANTA ANRA ST PAR K Net, a SANT AR ST %ek HL TING N R O� ma > Z J FA N P O 0 �O O J�� -T4P SANTA ANRA = m F U R P COLF COURSE � HUNTINGTON ¢ CAMPUS DR n N A R C A D I A K S W RD e a t z p ¢ ¢ DUARTE o O c7 z 0 o ¢ > z ¢ ¢ N N m CAMINO REAL ¢ CAMINO REAL All J ¢ ¢ O Z _ ¢ x F 7 w F z LONGDEN AV Z w 3 O J Q t0 LIVE O All LAS TUNAS DR LIVE OAK V 1 Q e D LOCATION MAP °y NOT TO SCALE