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TECHNICAL APPROACH: COLLABORATION WITH ENGINEERS <br />CITY OF SOUTH BEND: PINHOOK WTP IMPROVEMENTS PROJECT GUARANTEED SAVINGS CONTRACT <br />This section of the response should contain information about the Provider’s technical abilities. <br />PROJECT UNDERSTANDING <br />The City and American Structurepoint have done extensive research and planning to determine what improvements <br />need to be completed during this project. The 5 specific items that need to be addressed are: Filters, Valves, Roof, <br />Electrical and I&C, HVAC. <br />Our approach to this project will focus on maximizing the amount of work that can be accomplished during the minimum <br />amount of time, while keeping an eye out for cost-savings opportunities along the way. Since the City is able to shut <br />down the entire plant for the construction, we will work on the filter refurbishment and valve replacements concurrently <br />– with multiple crews on each task. We will develop a strategy for the sequence of the filter rehab with plant personnel <br />and “leap-frog” the media from one filter to a refurbished one when possible if it will save time and money. <br />We will solicit quotes from subcontractors we know and trust for the electrical, HVAC, and roofing work. We will also <br />request quotes from local South Bend contractors that the City recommends. <br />PRE-OUTAGE PREPARATION <br />Our experience shows that pre-outage preparation pays off. We know <br />to expect the un-expected and don’t assume anything when doing <br />retrofits of existing facilities. Taking the time to verify items like lay- <br />lengths of valves, bolt diameters, thread pitch, and coating compatibility <br />are all small details that need to be addressed to ensure the work is <br />efficient. For items that cannot be verified, it is important to have <br />contingency plans. At this moment we are retrofitting eight gravity filters <br />in West Point, NY. This photo shows gravity filter #4 after media was <br />removed with the existing underdrains still intact. The scope of work <br />includes upgrading 8- 14’x14’ gravity filters, keeping underdrains in <br />place where we find them to be intact and then install the Leopold <br />Universal Type XA -IMS Media Retainer, installing 24” sand and 12” <br />Filter #4 after media removal <br />anthracite. A similar project was completed at another American Water <br />plant earlier this summer (2020). <br />FILTERS <br />The scope of the anticipated filter rehabilitation is clearly defined on <br />Drawing C210 and it is consistent with what we have experienced on <br />recent projects. We have proactively contacted BL Anderson and <br />obtained a budgetary quote for the Leopold IMS 200 retainer that is <br />being considered for the 8 filters. We are experienced with this product <br />and efficiently install it. Once we remove the existing MDM, we will <br />coordinate the inspection of the underdrain blocks and begin <br />cleaning/prepping the filter for installation of the new IMS components. <br />This will include the removal of the existing cant strip and items shown <br />in Section 1 of drawing C209. Overall, modifications to each filter will <br />take a crew of 3 men between 7 and 9 days depending on the extent <br />of repairs required beyond the basic scope already identified. <br />Placement of media via eductor <br />The two biggest variables for the filter renovation will be: the cost-benefit ratio of re-using the media and what <br />underdrain components will need to be replaced in each filter. We will help assess the pros/cons of re-using the media <br />and prepare budgets for both reuse and purchasing new. The choice will affect the sequence of filter construction, the <br />duration for each retrofit, the process we use to remove and replace the media, and ultimately the cost of the project. <br />Page | 30 <br /> <br />