21 - Proposed OCSD Transfer of Fairview Trunk Protecting our community's health and the environment by providing solid waste and sewer collection services. www.cmsdca.gov Costa Mesa Sanitary District ….an Independent Special District Memorandum ITEM NO. 21 T o: Board of Directors Via: Scott Carroll, General Manager From: Rob Hamers, District Engineer Date: March 28, 2013 Su bject: Proposed OCSD Transfer of Fairview Trunk to CMSD – Condition Assessment and Engineer’s Estimate to Rehabilitate Summary Staff has been reviewing and analyzing CCTV video of the Fairview Trunk to determine its current condition and a cost estimate to bring the trunk up to industry standards. The following are staff’s findings. S ta ff Recommendation That the Board of Directors considers the Engineer’s Report and direct the General Manager to conduct a soils test. Analysis Reason for Transfer Orange County Sanitation District (OCSD) is a “sanitation district”, as opposed to a “sanitary district,” and a sanitation district is a regional agency that owns large trunk sewers, treatment plants, wastewater recycling facilities, and ocean outfall facilities. OCSD sewer lines are large (96” diameter) while a “sanitary district”, which is a local sewer agency, owns small diameter sewers (8”, 10”, 12”, etc.) OCSD has found itself owning multiple small diameter sewers that have caused OCSD to own and operate small diameter cleaning equipment in addition to their large-scale equipment. OCSD, therefore, desires to transfer the smaller sewers to the local agencies in which they reside. OCSD and the Costa Mesa Sanitary District (CMSD) have to date
Board of Directors March 28, 2013 Page 2 of 4 entered into four phases of sewer line transfers. The proposed Fairview Trunk transfer would be Phase V and consists of 10” and 12” diameter sewers . Development of the Home Ranch The proposed development of the Home Ranch (bounded by South Coast Drive, Ikea, 405 Freeway, and Fairview Road) presented OCSD with the opportunity to transfer the Fairview Trunk to CMSD. OCSD has historically mandated that new development be sewered northerly to the Sunflower Trunk instead of southerly to the Gisler Red Hill Trunk due to the possibility that future widening of the 405 freeway may cause abandonment of the Gisle r Red Hill Trunk. Indications from OCTA are the future widening of the 405 will not negatively impact the Gisler Red Hill Trunk, therefore, OCSD is taking the position that sewering the Home Ranch by the Fairview Trunk or the CMSD Ikea Trunk in a southerly direction is conditioned upon transfer of the Fairview Trunk. Sewering in the northerly direction is expensive and requires a new pumping station. Portion of Sewer Under 405 Freeway During the previous transfer (Phase IV), in accordance with CMSD’s request, OCSD retained ownership of the portion of the sewers that lie under the 405 freeway due to the large financial liability associated with these portions of the lines. For this transfer, OCSD originally stated the transfer of the Fairview Trunk would include the portion under the 405 freeway, however, then CMSD President Bob Ooten and current President Jim Ferryman successfully negotiated with OCSD to have them retain this portion . Benefits of the Transfer to CMSD Benefits to the CMSD include: Continuing the mutually beneficial and friendly relationship with OCSD. Collection of connection charges and yearly fees from developments connected directly to the Fairview Trunk. CMSD ordinances exempt developments connected directly to an OCSD trunk because CMSD has no facilities involved and provides no cleaning or maintenance. Based on a build-out of approximately 1 million square feet in the Home Ranch development, an estimate of one-time CMSD connection charges is $40,000 and the on-going yearly fee is approximately $39,000. Staff has not yet studied other existing and potential connections to the Fairview Trunk. Additional infrastructure helps spread CMSD capital and maintenance costs. OCSD states there have been no sanitary sewer overflows (SSOs) from the Fairview Trunk.
Board of Directors March 28, 2013 Page 3 of 4 Risks to CMSD Additional sewers provide additional possibilities of SSOs. As CMSD Board and Staff are aware, the South Coast Drive sewer transferr ed to CMSD as part of Phase IV transfer is surrounded by partially compacted, moist, soil, including sandy areas that make reconstruction very difficult. District Staff is unsure of the soil conditions surrounding the Fairview Trunk. Ownership of the Fairview Trunk may cause additional monies to be contributed to the CMSD asset management fund. Due Diligence Steps Due diligence includes developing the cost to repair existing deficiencies and bringing the sewer up to industry standards. These steps inclu de: Review the 2004, 2007 , and 2012 CCTV of the trunk as provided by OCSD to determine needed repairs. Compare the 2004, 2007 , and 2012 videos to determine whether deterioration is occurring. Inspect the manhole interiors. Prepare an Engineer’s Estimate of needed repairs and rehabilitation. Research soil conditions, ground water levels, and utility projects in and around the Fairview Trunk. Interview city and water district engineers and inspectors to ascertain field conditions and results of projects in Fairview Road. Attachment A is the District Engineer’s report identifying the condition s and recommendations for improvement. This area is close proximity to the OCSD sewer transfer on South Coast Drive where the District experienced significant wet soil conditions that caused the soil to collapse during excavation. From the lessons learned at South Coast Drive, staff is recommending an extensive soil test be conducted to determine the soil conditions and ground water levels. Strategic Plan Element & Goal This item adheres to Strategic Element 1.0, Infrastructure , and Strategic Goal No. 1.4., System wide Sewer Replacement and Repair Program . Legal Review Not applicable Financial Review Staff is estimating $347,000 is needed to bring the Fairview Trunk back up to industry standards; however, that cost may increase after the soils test is conducted.
Board of Directors March 28, 2013 Page 4 of 4 Attachment B is an itemized summary of the rehabilitation that includes condition assessment, engineering design, and contract administration and inspection fees. Committee Recommendation On March 19, 2013, the Operations Committee discussed this item and recommends that the Board directs the General Manager to conduct a soils test and report back to the Committee and Board of Directors with its findings. Public Notice Process Copies of this report are on file and will be included with the entire agenda packet for the March 28 , 201 3 Board of Directors regular meeting at District Headquarters and on District’s website. Alternative Actions 1. Do not conduct a s oils test. 2. Do not consider the transfer of Fairview Trunk from OCSD. Attachment A: Engineer’s Report B: Engineer’s Estimate C: OCSD Map of Fairview Trunk
Attachment A District Engineer Report Fairview Trunk Transfer & Rehabilitation Project TRANSFER SEGMENT NO. 2 10” Sewer Location: Manholes BKR0020-0565-BKR0020-0560 (954.9’) Deficiencies: Calcium buildup at 41.6’, 188.5’, 203.5’, 228.9’, 244.1’, 259.2’, 324.9’, 329.9’, 335.0’, 355’5’, 365.5’, 390.2, 400.5’, 441.3’, 517.3’, 552.8’, 563.1’, 603.5’, 639.0’, 654.1, 694.8’, 745.3’, 765.4’, 790.6’, 800.5’, 810.7’, 826.1’, 851.0’, 866.6’, 891.6’, 902.0’, 917.0’, 951.3’ Slight calcium buildup at 100-124’, 236 -2 80’, 451 -456’, 467 -474’, 487 -493’, 497 -502’, 629 -635’, 640’, 645’, 659’, 665 -670’, 674’, 684’, 802 -808’, 813’, 824’, 847 -850’, 864’, 869 -887’, 891 -900’, 904 -910’, 913’, 915’ Infiltration Weepers at 355.5’, 517.3’, 552.8’, 563.1’ Infiltration Dripper at 891 .6’ Work: 1) Remove calcium deposits by chemical and mechanical methods. 2) Clean entire line. 3) Use a packer to terminate weepers and dripper. 4) Install Cured in Place Pipe (CIPP) for entire segment to prevent future calcium buildup. 5) Recoat manhole BKR0020-05 60 (17.4’ deep ) due to failure of existing lining . Apply new lining to manhole walls, bottom, and channels. 6) Install an intermediate manhole; 954.9’ exceeds standards for MH spacing. 7) Grind “OCSD” off downstream MH cover. TRANSFER SEGMENT NO. 3 12” Sewer Location: Manholes BKR0020-0560-BKR0020-0555 (164.9’) Deficiencies: Calcium buildup at 3.2’, 72.1’, 123.3’ 157.8’ (heavy) Slight calcium buildup at 79-113’ Infiltration Dripper at 157.8’
Work: 1) Remove calcium deposits by chemical and mechanical methods. 2) Clean entire line. 3) Use a packer to terminate dripper. 4) Install Cured in Place Pipe (CIPP) for entire segment to prevent future calcium buildup. 5) Recoat manhole BKR0020-0555 (18.6’ deep) due to failure of existing lining . Apply new lining to manhole walls, bottom, and channels. 6) Grind “OCSD” off downstream MH cover. TRANSFER SEGMENT NO. 4 12” Sewer Location: Manholes BKR0020-0555-BKR0020-0550 (499.1’) Deficiencies: Calcium buildup at 3.0’, 12.6’, 37.6’, 44.1’ , 82.5 -84.5’, 108.2’, 173.8’ Slight calcium deposits at 20-69’, 97 -105’, 139 -174’, 200 -240’, 330 -435’, 464’ I nfiltration Runner at 3.0’ Infiltration Dripper at 44.1’ Work: 1) Remove calcium deposits by chemical and mechanical methods. 2) Clean entire line. 3) Use a packer to terminate runner and dripper. 4) Install Cured in Place Pipe (CIPP) for entire segment to prevent future calcium buildup. 5) Downstream MH BKR0020-0550 to remain under OCSD ownership. SEGMENT NOT TO BE TRANSFERED (under 405 Freeway) 12” Sewer Location: Manholes BKR0020-0550-BKR0020-0100 (651.8’) Deficiencies: Calcium Buildup at 4.0’, 10.4’, 40.9’, 60.6’, 63.7’, 77.8’, 86.1’, 141.6’, 191.4’, 348.6’-353.7’, 413.7’, 443.7’, 579.9’, 613.2’, 614.1’, 631.0’, 635.6’, 643.7’ Slight calcium deposits at 148’, 303’, 320’, 474’, 600’ Infiltr ation Gusher at 70.5’
Infiltration Dripper at 614.1’ Crack Circumferential at 71.0’ Crack Longitudinal at 637.6’ Recommendations: 1) Remove calcium buildup by chemical and mechanical methods. 2) Clean entire line. 3) Use a packer to terminate gusher (immediately) and dripper. 4) Install Cured in Place Pipe (CIPP) for entire segment to prevent future calcium buildup. Recoat both upstream and downstream manholes
File: Macintosh HD:Users:robhamers:Desktop:CMSD Fairview Trunk estimate.xlsx Worksheet: CMSD Budget COSTA MESA SANITARY DISTRICT Print: 2/18/13 Engineer's Estimate Client/Owner:COSTA MESA SANITARY DISTRICT Project:OCSD SEWER TRANSFER TO CMSD- FAIRVIEW TRUNK Bid Date Engineer's Estimate Item No.Unit Cost Total Cost 1 Remove calcium deposits by chemical & mechanical methods 1LS 2,000.00 $ 2,000.00 $ Clean entire line 1LS 500.00 $ 500.00 $ Use packer to terminate dripper 1LS 1,500.00 $ 1,500.00 $ Install Cured in Place Pipe (CIPP) for entire segment 1LS 70,000.00 $ 70,000.00 $ Recoat manholes BKR0020-0565 (15.0’ deep) 1LS 8,000.00 $ 8,000.00 $ Install an intermediate manhole 1LS 10,000.00 $ 10,000.00 $ Grind "OCSD" off downstream manhole cover 1LS 300.00 $ 300.00 $ 2 Remove calcium deposits by chemical & mechanical methods 1LS 4,000.00 $ 4,000.00 $ Clean entire line 1LS 600.00 $ 600.00 $ Use packer to terminate weepers and dripper 1LS 5,000.00 $ 5,000.00 $ Install Cured in Place Pipe (CIPP) for entire segment 1LS 72,000.00 $ 72,000.00 $ Recoat manhole BKR0020-0560 (17.4’ deep) 1LS 10,000.00 $ 10,000.00 $ Install an intermediate manhole 1LS 10,000.00 $ 10,000.00 $ Grind "OCSD" off downstream manhole cover 1LS 300.00 $ 300.00 $ 3 Remove calcium deposits by chemical & mechanical methods 1LS 2,000.00 $ 2,000.00 $ Clean entire line 1LS 500.00 $ 500.00 $ Use packer to terminate dripper 1LS 1,500.00 $ 1,500.00 $ Install Cured in Place Pipe (CIPP) for entire segment 1LS 14,000.00 $ 14,000.00 $ Recoat manholes BKR0020-0555 (18.6’ deep) 1LS 11,000.00 $ 11,000.00 $ Grind "OCSD" off downstream manhole cover 1LS 300.00 $ 300.00 $ 4 Remove calcium deposits by chemical & mechanical methods 1LS 2,000.00 $ 2,000.00 $ Clean entire line 1LS 500.00 $ 500.00 $ Use packer to terminate dripper 1LS 2,000.00 $ 2,000.00 $ Install Cured in Place Pipe (CIPP) for entire segment 1LS 40,000.00 $ 40,000.00 $ Sub Total $268,000.00 15% Contingency including mobilization, bonding, traffic control 40,500.00 $ Condition Assessment Engineering Fee 3,500.00 $ Engineering Design (10%)31,000.00 $ Contract Admin/Inspection (10%)31,000.00 $ TOTAL AMOUNT $374,000.00 TRANSFER SEGMENT NO. 4-Manholes BKR0020-0555-BKR0020-0550 (499’ 12" sewer)TRANSFER SEGMENT NO. 3-Manholes BKR0020-0560-BKR0020-0555 (165’ 12" sewer)Quantity Description TRANSFER SEGMENT NO. 2-Manholes BKR0020-0565-BKR0020-0560 (955' 10" sewer)TRANSFER SEGMENT NO. 1-Manholes BKR0020-0570-BKR0020-0565 (929’ 10" sewer)
FAIRVIEW BKR0020-0565 BKR0020-0560 BKR0020-0550 BKR0020-0555 SUN0050-0000 SUN0045-0000 SUN0060-0000 BKR0020-0107 BKR0020-0095 SUN0055-0005 BKR0020-0110 BKR0020-0105 BKR0020-0090 SUN0040-0005 SUN0040-0000 SUN0055-0000 BKR0020-0570 BKR0020-0100 250 0 250 500 FEET Disclaimer: Map prepared by Orange County Sanitation District. This map is intended for graphical representation only. No level of accuracy is claimed for the base mapping shown hereon and graphics should not be used to obtain coordinate values, bearings or distances. Portions of this derived product contain geographical information copyrighted by Thomas Brothers.All Rights Reserved.Source: OCSD GIS Data, Thomas Brothers 2010.Created: February 2012 Orange County Sanitation District Proposed Sewer Transfer to Costa Mesa Sanitary District /-- Fairview Avenue --%&l (OCSD manholes to be retained Proposed manholes to be transfered OCSD sewers to be retained Proposed sewers to be transfered Proposed sewer transfer H:\apps\gis.dta\740_data\AI-Projects\Sewer Transfers\2011 Costa Mesa\Fairview Ave