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HomeMy WebLinkAbout11 ADOPT RESOLUTION NO. 16-17 TO ACCEPT IMPROVEMENTS FOR BIOFILTRATION (CIP NO. 50041) AND NOTICE OF COMPLETION11 Agenda Item Au"ENDA REPORT Reviewed: City Manager acro* Finance Director MEETING DATE: APRIL 5, 2016 TO: JEFFREY C. PARKER, CITY MANAGER FROM: DOUGLAS S. STACK, DIRECTOR OF PUBLIC WORKS/CITY ENGINEER SUBJECT: ADOPT RESOLUTION NO. 16-17 TO ACCEPT IMPROVEMENTS FOR THE BIOFILTRATION RETROFIT CONSTRUCTION PROJECT (CIP NO. 50041) AND AUTHORIZE THE CITY ENGINEER TO FILE A NOTICE OF COMPLETION SUMMARY Construction of the Biofiltration Retrofit — Edinger / Red Hill / Valencia / Kensington Park Quadrant Construction Project (CIP No. 50041) has been completed to the satisfaction of the City Engineer and is now ready for City Council acceptance. RECOMMENDATION It is recommended that the City Council take the following actions: 1. Adopt Resolution No. 16-17 accepting the construction of the Biofiltration Retrofit — Edinger / Red Hill / Valencia / Kensington Park Quadrant Construction Project (CIP No. 50041); and 2. Authorize the City Engineer to execute and file the Notice of Completion with the Orange County Recorder's Office. FISCAL IMPACT The final construction cost for the Biofiltration Retrofit — Edinger / Red Hill / Valencia / Kensington Park Quadrant Construction Project (CIP No. 50041) is $1,616,246.57. The project is partially funded by the OCTA Measure M2 Environmental Cleanup Program Tier 2 Grant, in the amount of $1,200,000, with the remainder provided by the City as a required match. There were no contract change orders and sufficient funds were budgeted and appropriated in the adopted FY 2015-17 Capital Improvement Program. CORRELATION TO THE STRATEGIC PLAN The biofiltration retrofit of the catch basins in the Edinger / Red Hill / Valencia / Kensington Park quadrant contributes to the fulfillment of the City's Strategic Plan Goal B: Public Safety and Protection of Assets. Specifically, the project implementation of Strategy 3, which among other items, is to ensure continuous maintenance and improvement of flood control facilities. DISCUSSION The Biofiltration Retrofit — Edinger / Red Hill / Valencia / Kensington Park Quadrant Construction Project (CIP No. 50041) consisted of excavation and installation of 32 biofiltration vaults and the connection to the existing storm drain system in order to remove oil/grease, heavy metals, trash and other debris prior to storm water entering the City local and County regional flood control system. Notice of Completion for Biofiltration Retrofit Construction Project April 5, 2016 Page 2 Construction ♦ the project is deemed complete to the satisfaction ♦ the City Engineer and is now ready for City Council acceptance. For reference, a detailed modular wetlands brochure is provided as an attachment. • installation was ♦ curb ♦- configurations. The • provides an overview of the application and the benefits of natural biofiltration to improve storm water • • State regulations. Attachment(s): 1. Resolution No. • 2. •• Wetlands • S OtyCouncil Items12016 Council Item M-05-2016ANOC Dofiltrabon RenfitNOC Dofiltrahm Retrofit (CIP50041) SCdxx ATTACHMENT 1 Resolution No. 16-17 RESOLUTION OF # OF OF CALIFORNIA,# OF IMPROVEMENT AUTHORIZING RECORDATION OF # COMPLETION FOR THE BIOFILTRATION RETROFIT CONSTRUCTION 'V# NO. 50041 WHEREAS, Beador Construction Company, Inc., having a contract with the City of • construct the hereinafter described public worksand improvement WHEREAS, the City Engineer has duly certified to the construction completion of • public improvement- - - - • • in a mannersatisfactory to the City Councilof - City of CouncilWHEREAS, the City • said contractor has completed said public improvement - - - • - particularly described in accordance with the provisions of the contract documents and the Notice of Completion, and acceptance of said public works and improvement should be filed and payment of the balance due said contrac! authorized in accordance with the contract documents; NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Tustin that • public worksand improvement is found to be complete, and the same is hereby-• -• Said public worksand improvement is more particularly described as • '• iSiofiltration Retrofit — Edinger / Red Hill / Valencia / Kensington Park Quadranl Construction Project" No. 50041 BE IT FURTHER RESOLVED that the City Engineer of the City of Tustin is hereby authorized to execute and file a Notice of Completion for the acceptance of said *ublic worksand improvement described herein as required by PASSED AND ADOPTED at a regular meeting of the City Council of the City of Tustin held on the 5 th day of April, 2016. r STATE OF CALIFORNIA ) COUNTY OF ORANGE ) SS CITY OF TUSTIN ) I, ERICA N. RABE, City Clerk and ex -officio Clerk of the City Council of the City of Tustin, California, do hereby certify that the whole number of the members of the City Council is five; that the above and foregoing Resolution No. 16-17 was duly and regularly passed and adopted at a regular meeting of the City Council held on the 5th day of April, 2016 by the following vote: COUNCILMEMBER AYES: COUNCILMEMBER NOES.. COUNCILMEMBER ABSTAINED: COUNCILMEMBER ABSENT: ERICA N. RABE City Clerk ATTACHMENT 2 Modular Wetlands Brochure 1� - M O D U L A I WFTLAND5 Advanced Stormwater Biofiltration r_- 4 r Contents 1 Introduction 2 Applications 3 Configurations 4 Advantages 5 Operation 6 Orientations j Bypass 7 Performance i Approvals 8 Sizing 9 Installation I Maintenance I Plants The Urban Impact For hundreds of years natural wetlands surrounding our shores have played an integral role as nature's stormwater treatment system. But as our cities grow and develop, these natural wet- lands have perished under countless roads, rooftops, and parking lots. Plant A Wetland Without natural wetlands our cities are deprived of water purification, flood control, and land stability. Modular Wetlands and the MWS Linear re-establish nature's presence and rejuvenate water ways in urban areas. MWS Linear The Modular Wetland System Linear represents a pioneering breakthrough in stormwater tech- nology as the only biofiltration system to utilize patented horizontal flow, allowing for a smaller footprint and higher treatment capacity. While most biofilters use little or no pre-treatment, the MWS Linear incorporates an advanced pre-treatment chamber that includes separation and pre- filter cartridges. In this chamber sediment and hydrocarbons are removed from runoff before it enters the biofiltration chamber, in turn reducing maintenance costs and improving performance. www.ModuLarWettands.com Applications The MWS Linear has been successfully used on numerous new construction and retrofit projects. The system's superior versatility makes it beneficial for a wide range of stormwater and waste water applications - treating rooftops, streetscapes, parking lots, and industrial sites- Industrial Many states enforce strict regulations for dis- charges from industrial sites. The MWS Linear has helped various sites meet difficult EPA mandated effluent limits for dissolved metals and other pol- lutants. Streets Street applications can be challenging due to limited space. The MWS Linear is very adaptable, and offers the smallest footprint to work around the constraints of existing utilities on retrofit pro- jects. Commercial Compared to bioretention systems, the MWS Lin- ear can treat far more area in less space - meeting treatment and volume control requirements. Residential Low to high density developments can benefit from the versatile design of the MWS Linear. The system can be used in both decentralized LID de- sign and cost-effective end -of -the -line configura- tions. Parking Lots Parking lots are designed to maximize space and the MWS Linear's 4 ft. standard planter width al- lows for easy integration into parking lot islands and other landscape medians - Mixed Use The MWS Linear can be installed as a raised plant- er to treat runoff from rooftops or patios, making it perfect for sustainable "live -work" spaces_ More applications are available on our website: www-Modu[arWetlands.com/Applications • Agriculture • Reuse • Low Impact Development • Waste Water Configurations The MWS Linear is the preferred biofiltration system of Civil Engineers across the country due to its versatile design. This highly versatile system has available "pipe -in" options on most models, along with built-in curb or grated inlets for simple integration into your stormdrain design. Curb Type The Curb Type configuration accepts sheet flow through a curb opening and is commonly used along road ways and parking lots. It can be used in sump or flow by conditions. Length of curb opening varies based on model and size. Grate Type The Grate Type configuration offers the same features and benefits as the Curb Type but with a grated/drop inlet above the systems pre-treatment chamber. It has the added benefit of allowing for pedestrian access over the inlet. ADA compliant grates are available to assure easy and safe access. The Grate Type can also be used in scenarios where runoff needs to be intercepted on both sides of landscape islands. Vault Type The system's patented horizontal flow biofilter is able to accept inflow pipes directly into the pre-treatment chamber, meaning the MWS Linear can be used in end -of -the -line installations. This greatly improves feasibility over typical decentralized designs that are required with other biofiltration/bioretention systems. Another benefit of the "pipe in" design is the ability to install the system downstream of underground detention systems to meet water quality volume requirements. Downspout Type The Downspout Type is a variation of the Vault Type and is designed to accept a vertical downspout pipe from roof top and podium areas. Some models have the option of utilizing an internal bypass, simplifying the overall design. The system can be installed as a raised planter and the exterior can be stuccoed or covered with other finishes to match the look of adjacent buildings. Advantages & Operation The MWS Linear is the most efficient and versatile biofiltration system on the market, and the only system with horizontal flow which improves performance, reduces footprint, and minimizes maintenance. Figure -1 and Figure -2 illustrate the invaluable benefits of horizontal flow and the multiple treatment stages. Featured Advantages • Horizontal Flow Biofiltration • Greater Filter Surface Area • Pre -Treatment Chamber • Patented Perimeter Void Area • Flow Control • No Depressed Planter Area 1 Pre -Treatment Separation • Trash, sediment, and debris are separated before entering the pre -filter cartridges • Designed for easy maintenance access Pre -Filter Cartridges • Over 25 ft2 of surface area per cartridge • Utilizes BioMediaGREEN filter material • Removes over 80% of TSS & 90% of hydrocarbons • Prevents pollutants that cause clogging fry migrating to the biofiltration chamber Indi,,;A,..,i KA -A;, Ml -- Cart Curb InIE filter Cartridge uioMedio VMr, EN i i Fig. 2 • Top View 2x to 3x More Surface Area Than Traditional Downward Flow Bioretention Systems, 2 Biofiltration Horizontal Flow • Less clogging than downward flow biofilters • Water flow is subsurface • Improves biological filtration Patented Perimeter Void Area • Vertically extends void area between the walls and the WetlandMEDIA on all four sides. • Maximizes surface area of the media for higher treatment capacity WetlandMEDIA • Contains no organics and removes phosphorus • Greater surface area and 48% void space Maximum evapotranspiration High ion exchange capacity and light weight vuueL ripe 3 Discharge Flow Control • Orifice plate controls flow of water through WetlandMEDIA to a level lower than the media's capacity. • Extends the life of the media and improves performance Drain -Down Filter • The Drain -Down is an optional feature that completely drains the pre-treatment chamber • Water that drains from the pre-treatment chamber between storm events will be treated Orientations .r', Side -By -Side 14, The Side -By -Side orientation places the pre-treat- ment and discharge chamber adjacent to one an- other with the biofiltration chamber running paral- lel on either side. This minimizes the system length, providing a highly compact footprint. It has been proven useful in situations such as streets with di- rectly adjacent sidewalks, as half of the system can be placed under that sidewalk. This orientation also offers internal bypass options as discussed below. Bypass Internal Bypass Weir (Side -by -Side Only) The Side -By -Side orientation places the pre-treat- ment and discharge chambers adjacent to one an- other allowing for integration of internal bypass. The wall between these chambers can act as a by- pass weir when flows exceed the system's treatment capacity, thus allowing bypass from the pre-treat- ment chamber directly to the discharge chamber. External Diversion Weir Structure This traditional offline diversion method can be used with the MWS Linear in scenarios where run- off is being piped to the system. These simple and effective structures are generally configured with two outflow pipes. The first is a smaller pipe on the upstream side of the diversion weir - to divert low flows over to the MWS Linear for treatment. The second is the main pipe that receives water once the system has exceeded treatment capacity and water flows over the weir. Flow By Design This method is one in which the system is placed just upstream of a standard curb or grate inlet to intercept the first flush. Higher flows simply pass by the MWS Linear and into the standard inlet down- stream. End -To -End The End To End orientation places the pre-treat- ment and discharge chambers on opposite ends of the biofiltration chamber therefore minimizing the width of the system to 5 ft (outside dimension)- This orientation is perfect for linear projects and street retrofits where existing utilities and sidewalks limit the amount of space available for installation. One limitation of this orientation is bypass must be ex- ternal. DVERT Low Flow Diversion DVERT Trough _AW. Pr This simple yet innovative diversion trough can be installed in existing or new curb and grate inlets to divert the first flush to the MWS Linear via pipe. It works similar to a rain gutter and is installed just below the opening into the inlet. It captures the low flows and channels them over to a connecting pipe exiting out the wall of the inlet and leading to the MWS Linear. The DVERT is perfect for retrofit and green street applications that allows the MWS Lin- ear to be installed anywhere space is available- Performance The MWS Linear continues to outperform other treatment methods with superior pollutant removal for TSS, heavy metals, nutrients, hydrocarbons and bacteria. Since 2007 the MWS Linear has been field tested on nu- merous sites across the country. With it's advanced pre-treatment chamber and innovative horizontal flow biofilter, the system is able to effectively remove pollutants through a combination of physical, chemical, and biological filtration processes. With the same biological processes found in natural wetlands, the MWS Linear harnesses natures ability to process, transform, and remove even the most harmful pollutants. Approvals The MWS Linear has successfully met years of challenging technical reviews and testing from some of the most prestigious and demanding agencies in the nation, and perhaps the world. Washington State DOE Approved The MWS Linear is approved for General Use Level Designation (GULD) for Basic, En- hanced,and Phosphorus treatment at 1 gpm/ft2 loading rate. The highest performing BMP on the market for all main pollutant categories. T55 Total Ortho Nitrogen Dissolved Zinc Dissolved Total Zinc Total Motor Oil Phosphorus Phosphorus Copper Copper 85% 643/c 67% 45% 66% 38% 69% 50% 95% DEQ Assignment The Virginia Department of Environmental Quality assigned the MWS Linear, the highest phosphorus removal rating for manufactured treatment devices to meet the new Virginia Stormwater Management Program (VSMP) Technical Criteria. MASTEP Evaluation The University of Massachusetts at Amherst - Water Resources Research Center, issued a technical evaluation report noting removal rates up to 84% TSS, 70% Total Phosphorus, 68.5% Total Zinc, and more. Rhode Island DEM Approved Approved as an authorized BMP and noted to achieve the following minimum removal efficiencies: 85% TSS, 60% Pathogens, 30% Total Phosphorus for discharges to freshwater systems, and 30% Total Nitrogen for discharges to saltwater or tidal systems. Flow Based Sizing The MWS Linear can be used in stand alone applica- tions to meet treatment flow requirements. Since the MWS Linear is the only biofiltration system that can ac- cept inflow pipes several feet below the surface it can be used not only in decentralized design applications but also as a large central end -of -the -line application for maximum feasibility. Treatment Flow Sizing Table Model # Dimensions WetlandMedia Surface Area Treatment Flow Rate (cfs) MWS -L-4-4 4'x 4' 23 ft2 0.052 MWS -L-4-6 4'x 6' 32 ft' 0.073 MWS -L-4-8 4'x 8' 50 ft2 0.115 MWS -L-4-13 4' x 13' 63 ft2 0.144 MWS -L-4-15 4' x 15' 76 ft2 0.175 MWS -L-4-17 4' x 17' 90 ft2 0.206 MWS -L-4-19 4'x 19' 103 ft2 0.237 MWS -L-4.21 4'x 21' 117 ft2 0.268 MWS -L-8-8 8'x 8' 100 ft2 0.230 MWS -L-8-12 8'x 12' 151 ft2 0.346 MWS -L-8-16 8'x 16 201 ft2 0.462 Volume Based Sizing Many states require treatment of a water quality volume and do not offer the option of flow based design. The MWS Linear and its unique horizontal flow makes it the only biofilter that can be used in volume based design installed downstream of ponds, detention basins, and underground storage systems. Treatment Volume Sizing Table Model # Treatment Capacity (cu. ft.) Treatment Capacity (cu. ft.) @ 24 -Hour Drain Down @ 48 -Hour Drain Down MWS -L-4-4 1140 2280 MWS -L-4-6 ~ Y _ 1600 3200 MWS -L-4-8 2518 5036 MWS -L-4-13 3131 6261 MWS -L-4-15 3811 7623 MWS -L-4-17 4492 8984 MWS -L-4-19 5172 10345 MWS -L-4-21 5853 11706 MWS -L-8-8 5036 10072 MWS -L-8-12 7554 15109 MWS -L-8-16 10073 20145 Installation The MWS Linear is simple, easy to install, and has a space efficient design that offers lower excavation and in- stallation costs compared to traditional tree -box type systems. The structure of the system resembles pre -cast catch basin or utility vaults and is installed in a similar fashion. The system is delivered fully assembled for quick in- stallation. Generally, the structure can be unloaded and set in place in 15 minutes. Our experienced team of field technicians are available to supervise installations and provide technical support. Maintenance Reduce your maintenance costs. man hours, and materials with the MWS Linear. Unlike other biofiltration systems that provide no pre-treatment. the MWS Linear is a self-contained treatment train which incorporates simple and effective pre-treatment. Maintenance requirements for the biofilter itself are almost completely eliminated, as the pre-treatment chamber removes and isolates trash, sediments, and hydrocarbons. What's left is the simple maintenance of an easily accessible pre-treatment chamber that can be cleaned by hand or with a standard vac truck- Only periodic replacement of low- cost media in the pre -filter cartridges is required for long term opera- tion and there is absolutely no need to replace expensive biofiltration media. Plant Selection Abundant plants, trees, and grasses bring value and an aesthetic benefit to any urban setting, but those in the MWS Linear do even more • they increase pollutant removal. What's not seen, but very important, is that below grade the stormwater runoff/flow is being subjected to nature's secret weapon: a dynamic physical, chemi- cal, and biological process working to break down and remove non -point source pollutants. The flow rate is controlled in the MWS Linear, giving the plants more "contact time" so that pollutants are more successfully decomposed, volatilized and incorporated into the biomass of The MWS Linear's micro/macro flora and fauna. A wide range of plants are suitable for use in the MWS Linear, but selec- tions vary by location and climate. View suitable plants by selecting the List relative to your project location's hardy zone. Please visit www.ModuLarWetLands.com/Plants for more information and various plant lists. Page 9 www.ModuLarWettands.com