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07-1002_TRUSSELL TECHNOLOGIES, INC_Personal Services Agreement11 0 PERSONAL SERVICES AGREEMENT THIS AGREEMENT is made and entered into this 6� day of Oqlz�� 1 2007, by and between the City of San Juan Capistrano (hereinafter referred to as the "City") and Trussell Technologies, Inc., (hereinafter referred to as "Consultant"). RECITALS: WHEREAS, City desires to retain the services of Consultant regarding the City's request for proposals for Engineering Design Services for the Testing, Evaluation, and Recommendations Relating to the Colored Water; and WHEREAS, Consultant is qualified by virtue of experience, training, education and expertise to accomplish such services. NOW, THEREFORE, City and Consultant mutually agree as follows: Section 1. Scope of Work. The scope of work to be performed by Consultant shall consist of those tasks as set forth in Exhibit 'A" described as the Cover Letter and Sections 1 & 2 of Consultant's proposal for the above described work, dated September 10, 2007; attached and incorporated herein by reference. Consultant warrants that all of its services shall be performed in a competent, professional and satisfactory manner and in accordance with the prevalent standards of its profession. Section 2. Term. This Agreement shall commence on the effective date of this Agreement and services required hereunder shall be completed by no later October 31, 2009. Section 3. Compensation. Total compensation for the scope of services for this Project shall not exceed One Hundred Ninety Nine Thousand, Nine Hundred Thirty Nine ($199,939 ), as set forth 1 ATTACHMENT I 0 9 in Exhibit "B," described as the Fee Proposal Cost Summary of Consultant's proposal for the above described work, attached and incorporated herein by reference. 3.2 Rate Schedule. The services shall be billed to the City at the hourly rate set forth in Exhibit "B," attached and incorporated herein by reference. Included within the compensation are all the Consultant's ordinary office and overhead expenses incurred by it, its agents and employees, including meetings with the City representatives and incidental costs to perform the stipulated services. Submittals shall be in accordance with Consultant's proposal. 3.3 Method of Payment. Consultant shall submit monthly invoices based on total services, which have been satisfactorily completed and specifying a percentage of projected completion for approval by the City. The City will pay monthly progress payments based on approved invoices in accordance with this Section. For extra work not part of this Agreement, a written authorization from City is required prior to Consultant undertaking any extra work. 3.4 Records of Expenses. Consultant shall keep complete and accurate records of all costs and expenses incidental to services covered by this Agreement. These records will be made available at reasonable times to City. Section 4. Independent Contractor. It is agreed that Consultant shall act and be an independent contractor and not an agent or employee of City, and shall obtain no rights to any benefits which accrue to City's employees. Section 5. Limitations Upon Subcontracting and Assignment. pq 0 0 The experience, knowledge, capability and reputation of Consultant, its principals and employees were a substantial inducement for City to enter into this Agreement. Consultant shall not contract with any other entity to perform the services required without written approval of the City. This Agreement may not be assigned, voluntarily or by operation of law, without the prior written approval of the City. If Consultant is permitted to subcontract any part of this Agreement by City, Consultant shall be responsible to City for the acts and omissions of its subcontractor as it is for persons directly employed. Nothing contained in this Agreement shall create any contractual relationships between any subcontractor and City. All persons engaged in the work will be considered employees of Consultant. City will deal directly with and will make all payments to Consultant. Section 6. Changes to Scope of Work. In the event of a change in the Scope of Work provided for in the contract documents as requested by the City, the Parties hereto shall execute an addendum to this Agreement setting forth with particularity all terms of the new agreement, including but not limited to any additional Consultant's fees. Section 7. Familiarity with Work and Construction Site. By executing this Agreement, Consultant warrants that: (1) it has investigated the work to be performed; (2) it understands the facilities, difficulties and restrictions of the work under this Agreement. Should Consultant discover any latent or unknown conditions materially differing from those inherent in the work or as represented by City, it shall immediately inform City of this and shall not proceed with further work under this Agreement until written instructions are received from the City. Section 8. Time of Essence. Time is of the essence in the performance of this Agreement. Section 9. Compliance with Law. Consultant shall comply with all applicable laws, ordinances, codes and regulations of federal, state and local government. Section 10. Conflicts of Interest. Consultant covenants that it presently has no interest and shall not acquire any interest, direct or indirect, which would conflict in any manner or degree with the 3 0 0 performance of the services contemplated by this Agreement. No person having such interest shall be employed by or associated with Consultant. Section 11. Copies of Work Product. At the completion of the contract period, Consultant shall have delivered to City at least one (1) copy of any final reports and architectural drawings containing Consultant's findings, conclusions, and recommendations with any support documentation. All reports submitted to the City shall be in reproducible format. All services to be rendered hereunder shall be subject to the direction and approval of the City. Section 12. Ownership of Documents. All reports, information, data and exhibits prepared or assembled by Consultant in connection with the performance of its services pursuant to this Agreement are confidential to the extent permitted by law, and Consultant agrees that they shall not be made available to any individual or organization without prior written consent of the City. All such reports, information, data, and exhibits shall be the property of the City and shall be delivered to the City upon demand without additional costs or expense to the City. The City acknowledges such documents are instruments of Consultant's professional services. Section 13. Indemnity. Consultant agrees to protect, defend and hold harmless City, its elected and appointed officials and employees from any and all claims, liabilities, expenses or damages of any nature, including attorneys' fees, for injury or death of any person or damage to property or interference with use of property and for errors and omissions committed by Consultant arising out of or in connection with the work, operation or activities of Consultant, its agents, employees and subcontractors in carrying out its obligations under this Agreement. Section 14. Insurance. Insurance required herein shall be valid for a minimum of one year, or term of contract, whichever is longer, and it shall be provided by Admitted Insurers in good standing with the State of California and having a minimum Best's Guide Rating of A - Class VII or better. 14.1 Comprehensive General Liability. 4 0 0 Throughout the term of this Agreement, Consultant shall maintain in full force and effect Comprehensive General Liability coverage in the following minimum amounts: $500,000 property damage; $500,000 injury to one person/any one occurrence/not limited to contractual period; $1,000,000 injury to more than one person/any one occurrence/not limited to contractual period. 14.2 Comprehensive Automobile Liability. Throughout the term of this Agreement, Consultant shall maintain in full force and effect Comprehensive Automobile Liability coverage, including owned, hired and non - owned vehicles in the following minimum amounts: $500,000 property damage; $500,000 injury to one person/any one occurrence/not limited to contractual period; $1,000,000 injury to more than one person/any one occurrence/not limited to contractual period 14.3 Worker's Compensation. If Consultant intends to employ employees to perform services under this Agreement, Consultant shall obtain and maintain, during the term of this Agreement, Worker's Compensation Employer's Liability Insurance in the statutory amount as required by state law. 14.4 Proof of Insurance Requirements/Endorsement. Prior to beginning any work under this Agreement, Consultant shall submit the insurance certificates, including the deductible or self -retention amount, and an additional insured endorsement to the Consultant's general liability and umbrella liability policies to the City Clerk's office for certification that the insurance requirements of this Agreement have been satisfied. 14.5 Notice of Cancellation/Termi nation of Insurance. The above policy/policies shall not terminate, nor shall they be cancelled, nor the coverages reduced, until after thirty (30) days' written notice is given to City, except that 5 0 0 ten (10) days' notice shall be given if there is a cancellation due to failure to pay a premium. 14.6 Terms of Compensation. Consultant shall not receive any compensation until all insurance provisions have been satisfied. 14.7 Notice to Proceed. Consultant shall not proceed with any work under this Agreement until the City has issued a written "Notice to Proceed" verifying that Consultant has complied with all insurance requirements of this Agreement. Section 15. Termination. City shall have the right to terminate this Agreement without cause by giving thirty (30) days'advance written notice of termination to the Consultant. In addition, this Agreement may be terminated for cause by providing ten (10) days' notice to the Consultant of a material breach of contract. If the Consultant does not cure the breach of contract, then the agreement may be terminated subsequent to the ten (10) day cure period. Section 16. Notice. All notices shall be personally delivered or mailed to the below listed addresses, or to such other addresses as may be designated by written notice. These addresses shall be used for delivery of service of process: To City: City of San Juan Capistrano 32400 Paseo Adelanto San Juan Capistrano, CA 92675 Attn: Public Works Director To Consultant: Trussell Technologies, Inc. 11622 El Camino Real, Ste 100 San Diego, CA 92130 Attn: R. Shane Trussell, PhD, P.E. Section 17. Attorneys' Fees. If any action at law or in equity is necessary to enforce or interpret the terms of this Agreement, the prevailing party shall be entitled to reasonable aftorneys'fees, costs and necessary disbursements in addition to any other relief to which he may be entitled. 11 0 Section 18. Dispute Resolution. In the event of a dispute arising between the parties regarding performance or interpretation of this Agreement, the dispute shall be resolved by binding arbitration under the auspices of the Judicial Arbitration and Mediation Service ("JAMS"). Section 19. Entire Agreement. This Agreement constitutes the entire understanding and agreement between the parties and supersedes all previous negotiations between them pertaining to the subject matter thereof. IN WITNESS WHEREOF, the parties hereto have executed this Agreement. ATTEST: Monahan, City Clerk APPROVED AS TO FORM: C\-4��� John R. S 1§, City Attorney 7 CONSULTANT By: Trusse?1, Vice President Trussell Technologies, Inc. Truissell 0 0 10 September 2007 Mr. Eric P. Bauman, P.E. Water Engineering Manager City of San Juan Capistrano Public Works Department 32400 Paseo Adelanto San Juan Capistrano, California 92675 Re- Proposal to Provide Engineering Design Services for- the Testing, Evaluation and Recommendations Relating to Colored Water Dear Mr. Bauman: The purpose of this letter is to transmit our proposal prepared in response to your RFP, dated August 1'), 2007, requesting proposals to provide Engineering Design Services for the Testing, Evaluation, and Recommendations Relating to Colored Water, Trussell Technologies, Inc. is particularly pleased to submit a proposal in response to this RFP because we believe this is a project that our organization is uniquely suited to perform. Also, we want to personally thank you for the time you spent explaining the situation to us and helping us understand San Juan Capistrano's needs. We have retained the services of the Akel Engineering Group to assist us on the system modeling in Task 4. Tony Akel's experience in this area is exceptional, and we are confident you will be pleased. Colored water problems have plagued water utilities from the beginning of time. We feel it is important to resolve these problems because they have a direct impact on consumer confidence. At the same time, such problems are often not easily solved. The key to success in resolving such problems is to determine their cause. As a result we support the basic approach outlined in the RFP and, as you requested, we have prepared a scope of work and an estimate designed to respond directly to the services described in the RFP. At the same time we are proposing some changes to the approach detailed in the RFP in the form of an optional scope. We believe these changes will save the City money and, at the same time, improve the chance of success. They are based on our experience that such color problems often result from gradual accumulation of iron and/or manganese in the system over time, and show a poor correlation with the performance of the treatment plant on any one given day. As a result we are proposing a unique application of composite samplers; both at the treatment plant and in the distribution system to simultaneously accomplish three objectives: a) find if there is a direct correlation between treatment plant effluent quality, b) document conditions in the distribution system throughout the year, and c) document the quality of all the streams in the treatment plant so that efforts to troubleshoot the treatment process can be targeted where the), will make the most difference. In this regard, we propose sampling raw water header, the bypass strearn, the recycle stream, the RO strearn and the final product water from the clearwell so that all aspects of plant performance can be examined. EXHIBIT "A" 0 0 Mr. Eric P. Batunan, P.E. — City of San Juan Capistrano 10 September 2007 Page -2- RE: Proposal to Provide Engineering Design Set -vices for the Testing, Evaluation and Recommendations Relating to Colored Water We propose that, during normal weeks, a single week-long composite sample be prepared for sites throughout the treatment plant and in the distribution system. This will give us a complete record of all the inputs and outputs. So that this composite can be prepared, we plan to save the composites from the first part of the week so they can be combined into one composite at the end of the week. These stored samples create another opportunity. When a colored water incident occurs, we will be able to analyze water throughout the system and the treatment plant for several days before and after the incident. This maximizes the likelihood that we will be able to identify any correlations to be found. We save money but learn more. It is also proposed that the budget for pilot studies be retained by the City until a time when testing can be identified that will directly address the cause of the color problem. Based on the information we've seen to date, there are three possible issues that might be investigated at the treatment plant: a) poor performance of' oxidants ahead of the greensand filter (target of the pilot work proposed in the RFP), b) interference of recycled wash water with the performance of' the greensand filters (this was the problem in the Camp Pendleton system where Trussell Tech is involved in a project to improve performance), and c) poor performance of the RO in removing manganese (manganese is now higher than anticipated during design). Desktop studies may show that pilot testing is not required. Trussell Tech has reviewed the sample Professional Services Agreement provided by the City and is claiming no exception to its standard terms and conditions. This proposal is an offer valid for a 90 -day period. We hope you find our proposal interesting and responsive. We assure you that if Trussell Technologies, Inc. is selected to do this project you will receive the direct attention of the principals of the firm. Very Truly Yours R. Shane Trussell, Ph.D., P.E. Vice-Presiderit, Trussell Technologies, Inc. CITY OF SAN JUAN CAPISTRANO TABLE OF CONI ENTS Section I - Project Understanding Section 2 - Project Approach and Scope of Services Section 3 - Qualifications and Experience Section 4 - Project Team Section 5 - Project Schedule Section 6 - Non -Collusion Statement Section 7 - Resumes of key Personnel ,fir t I S S (_-_A I 0 0 PROPOSAL To PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO PROJECT UNDERSTANDING The City of San Juan Capistrano (henceforth referred to as the "City") has been receiving persistent colored water complaints in its distribution system. The City hired Malcolm Pirnie Inc. (JMPI) to develop a Study Plan to assess water quality issues associated with the complaints. The proposed project encompasses execution of the Study Plan as written by MPI. At the same time, the proposed project will lay out an alternative strategy to identify the source of the color and to eliminate the colored water episodes. It is our belief that judicious use of week-long composite samples at several locations will improve the chance of success. We also propose that the City retain the budget for pilot studies until a time when it is certain that the testing to be conducted will directly address the cause of the color problem. BACKGROUND Before providing background on the specific problem being experienced by the City, it is useful to provide a little background on the experiences of other utilities with colored water problems. Colored Water Colored water is a common cause of consumer cornplaints and there are many causes of colored water. The most common example is the colored water that occurs in the dead ends of almost every water, system. For most of the 20"' century cities with low alkalinity water (e.g. Portland, OR; Tacoma and Seattle, WA; Boston, MA; New York, NY; and Sydney, Aus.) experienced red water complaints resulting from iron release in cast iron mains. These same cities also experienced blue and green water at the consumer's taps due the action of the same water on consumer plumbing. A few cities have also experienced a blue water phenomenon that has been attributed to the action of bacteria On Consumer plumbing (e.g, EBMUD in Oakland, CA). Another common problem is the red water after a municipality changes from an unchlorinated deep well supply to a chlorinated surface supply. This happened in parts of Long Beach in the 1960s, in Upland, CA in the 1970s and in Tucson, AZ in the 1990s. Red watei is also more common in systems with high chloride water using cast iron or ductile iron mains. Besides dead ends, the most prevalent colored water problem today is probably red water associated with iron mains. Yellow, brown or black water associated with manganese is also a common problem. Some confusion exists concerning acceptable levels of manganese. EPA's secondary MCL for manganese is 50 ltg/L. Although keeping mangaDese below 50 lig/L is usually adequate to prevent staining of fixtures, lower levels are required to prevent periodic occurrences of' colored water. Over the years, the quality of the distribution systems has improved, consumers have become accustomed to higher quality water and more utilities are now finding that very low manganese levels are required to prevent consumer complaints. When manganese is present in water entering the distribution system, it deposits on pipeline surfaces and, periodically the deposit comes loose, making colored water. In 1960, A. Griffen, Chair of the AWWA Task Group on Manganese Deposition in Pipelines concluded that a range of 10 to 20 pg/I could be safely tolerated (Griffen, 1960). Thirty years later a careful study was done in Brisbane, Australia (Sly et al, 1990). This study reported that consurner complaints were only eliminated when manganese levels in the treatment plant effluent were consistently less than 20 lig/L, with an average level near 10 gg/L TRUSSEL1 TECHNOLOGIES, INC PASADENA, CA PAGE 1 1 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO San Juan Capistrano. The City has historically relied on imported water from the Metropolitan Water District of Southern California (MWDSC) as the primary source of its drinking water. In order to decrease its dependence on imported water, the City retained ECO Resources Inc. to design, build, and operate a Ground Water Recovery Plant (GWP,P) to treat groundwater from six wells: Capistrano Valley Water District (CVWD- 1), Dance Hall. Kinoshita, San Juan Basin 2 (SJB-2), San Juan Basin 4 (S.113-4). and Tirador. Well water quality The six wells serving the GWRP have varying quality. Table I -I shows the average turbidity, iron, manganese, and TDS for each of the six wells based on sampling conducted in 2004 along with the design raw water quality (DRWQ). Iron and manganese are highlighted because they often cause color episodes in distribution systems. Table 1-1 also shows the maxiinuin production that was anticipated from each well. Table I -I shows that certain wells are of considerably lower quality than others, notably Dance Hall and Tirador. The report by Boyle cited in Table 1-1 also noted one well would be used as a stand-by well and that not all wells would be used under typical operation. The Boyle report also showed a scenario where blending Five wells would result in a manganese concentration that exceeded the DRWQ (Boyle 2004). Based on the experience of ECO Resources in operating the plant, it is known that the wells were not capable of producing the anticipated amount of water shown in Table 1-1 (Drehet, 2006). Therefore, it is possible that the blending of well water may result it, conditions where the DRWQ for manganese is exceeded. It has been observed recently that the blended well water nianganese concentration has been hi(,her than the DRWQ, — 1.5 mg/L (Bauman, 2007). While the blended well water manganese concentrations have been higaher than expected, they are consistent over a period of time and not subject to fluctuations that correspond with the color episodes. Therefore, the City believes the well water quality, alone, is not likely the cause of the intermittent color episodes (Bauman, 2007). Description of the Groundwater Recovery Plant (GWRP). The GWRP treats a portion of the flow with reverse osmosis preceded by conventional multimedia filtration pretreatment. No oxidants are added upstream of the RO process. The remaining portion of the now bypasses the RO and is treated by oxidation followed by greensand filtration. For the bypass stream, sodium hypochlorite is added prior to the greensand filter to oxidize the iron and potassium permanganate is added to oxidize the manganese. Figure 1-1 shows a simplified schematic of the GWRP process. Figure 1-1 includes enough detail to describe the issues related to the proposed project and is not intended to show all details. For example, certain chemical feeds are omitted from Figure 1-1, such as the sodium bisulfite added upstream of the RID, the caustic soda added to the RO permeate, the free chlorine 1-1 - Well Water Quality and Expected Maximum Production fluent or Pararneter CVWD-1 I Dance Hall K! ­ �Vk A f SJR -2 I q.1171-41 I _000 TRUSSEL-L TECHNOLOGIES, INC PASADENA, CA PAGE 1-2 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Conventicnai R0 t Deaiweii 4 Product Water Blended Well - Water Geersanc i 1 FiTat,or Bypass Washwater Recycle (_)Xidants imle NaOCI KMnO, Figure 1�1 - Simpliflied Schematic oi the GWRP PTDCeS� added to the blended RO perineate/bypass strearn prim, to the clearwell, and the aqua ammonia and sodium hypochlorite added downstream of the clearwell before the water enters the distribution systerri, The numbers that appear on Figure 1-1 correspond to sampling locations, wbich will be discussed later in the proposal. Colored water complaints. The City has received persistent colored water complaints from residents since the GWRP began operation in December- 2004. A map of the distribution system provided by the City showed that in eight colored water episodes since 2005, most of the customer complaints occurred in the 250S pressure zone. July 2005. A colored water complaint was received in July 2005 that resulted in operational changes to the GWR -P. On July 17: 2005, the GWRP had a turbidity spike of > 1.0 NTU that lasted for 12 minutes, During the episode, customers were calling the City complaining of "brown water." At the time, the GWRP was not alarmed for turbidity spikes (Dreher, 2005a). Upon investigation, it was deten-nined that solids buildup in the washwater recovery tanks was resulting in increased turbidity of the clarified washwater recycle line that is fed to the RO bypass greensand filters. In essence, it was determined that the washwaiei line was drawing from a layer of high concentration solid material at the bottom of the washwater recovery tanks. In the short- term, ECO began pumping out the higher - concentration material from the %vashwater recovery tanks, For the long-term, ECO instituted weekly flushing of backwash water to the SOCWA wastewater plant and initiated a program of visual inspection of the backwash water tanks interior, to determine if buildup is occurring. Additionally, an alarm was put in place to shut down the washwalet recovery purrips when turbidity in the RO bypass filter effluent exceeds 0.2 NTU (Dreher, 2005a). September 2005. A colored water complaint was received in September 2005 that resulted in additional changes to the GWRP Operating procedures. On September 23, 2005, a turbidity spike was observed in the GWRP in the influent to the clearwell (see Figure I -I) with a duration of 1. 5 hours and > I NTU for 20 minutes (Dreher, 2006b). In a letter from ECO's plant operator to CDHS, it was noted that it was only the second time since plant operations began that colored water complaints were preceded by a turbidity spike. It was also noted that "post pi ior incidents have been related to distribution system issues." (Dreher, 2006b). TRUSSELL- TECHNOLOGIES, INC PASADENA, CA PAGE 1-3 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Additional modifications to plant operations were made aftei this incident. The online turbidirneter on the RO bypass stream had been "active" only when the plant was in the backwash recovery, process. After the incident, the RO bypass filter effluent turbidity alarm was set to remain active 24/7 and the plant's distribution pumps were set to be shutdown by this alarm. After the July 2005 incident, a procedure was put in place to waste the Fc/Mn solids sludge from the bottom of the washwater recovery tanks weekly. After the September 2005 colored water episode, the frequency of this process was increased to three times per week (MWF) (Dreher, 2006b). Evaluation of July and September 2005 Colored Water Episodes by MPI. The City retained MPI to identify corrective measures for water quality issues causing- "customei complaints of red and brown water resulting from excessive levels of iron and manganese concentrations in the distribution system samples." MPI was also asked to evaluate potential areas of concern regarding the GIAIRP's ability to produce 4800 AFY (MPI, 2006). The MPI evaluation corroborated the observations made by F -CO's plant operator (Dreher, 2006a&b) that high turbidities in the washwater recovery line contributed to the elevated turbidities in the July 2005 and September 2005 incidents of colored water. It was reported that the online turbidity analyzers for the RO bypass and blended RO permeate/R0 bypass water samples had limits of 10.0 and 1.0 NTU, respectively. In the July and Septenibei 2005 incidents, these limits were reached and actual turbidity values may be higher than those reported for these streams. MPI also reported that it is "highly unlikely that RO membrane operation resulted in the excessive turbidities obseived hi the City's distribution system (MPI, 2006). For the RO bypass treatment train, MPI recommended installation of an online turbidimeter on the washwater recycle line to the RO bypass filter to continuously measure turbidity and made several recommendations involving GWRP operations. They also noted that changes to plant operations that increase "the particulate and solids loading to the filters, such as oxidizing and filterin.- the complete plant now or operating the Backwash Recovery tanks in a less than optimal manner for solid separation may require construction of additional Filters or washwater recovery tanks (MPI, 2006), In their evaluation, MPI also recommended that ECO consider modifications for RO pretreatment to remove iron and noted that ECO is considering adding a sodium hypochlorite feed to the entire plant now (sand separator innuent) to oxidize it -on and remove it in the RO feed filters prior to the RO and avoid probleiris with membrane fouling. MPI also recommends that if this strategy is followed, there are several concerns that must be addressed (MPI, 2006): • The RO feed filters may not be adequately sized to handle the increased loading and additional filters may be needed • The RO feed filters will need to be backwashed more frequently, resulting in more wastewater to the washwater recovery tanks and possibly a need For additional tankage • The sodium hypochlorite may come in contact with the RO inernbranes and daniage them so careful evaluation of the sodium bisulfite feed system to avoid this potential problem is needed. • Manganese is not likely to be fully oxidized by the sodium hypochlorite, TRUSSELL TECHNOLC)GIES, INC PASADENA, CA PAGE 1-4 PROPOSAL TO PROVIDE EN*RING DESIGN SERVICES FOR THE TESTIOLVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO but it may be partially oxidized and could foul the RO membranes. Based on the raw data in Attachment A of MPI (2006)., Trussell Tech constructed a probability plot of average RO Feed conventional filter effluent compared to average RO Bypass greensand filter effluent for the period June through September 2005. As shown on Figure 1-2, the RO bypass greensand filter produces a lower effluent turbidity than the RO feed conventional filters. This suggests that a strategy to oxidize iron in the complete plant flow and increase the loading of the RO feed filters may indeed require the installation of additional RO Feed filters. EVALUATION OF THE COLORED WATER PROBLEM AND POSSIBLE APPROACHES TO SOLUTION The Tasks as laid out in Exhibit A by MPI will probably resolve the colored water problem, but Trussell Tech believes that, if some modifications are made to this approach, the chances of success can be improved and the cost of the project can be reduced. ('oncepts Behind the Optional Approach. The following four tasks were laid out in Exhibit A: 1. Task I -- Sampling 2. Task 2 — Evaluation of' Treatment Alternatives 1. — Optimization of GWRP _3 Task 3 Processes 4. Task 4 — Optimization of Distribution System Operations Trussell Tech. would like to suggest modifications to Tasks I and 2. As it is currently specified Task I would collect daily samples at three points in the distribution and at the following locations at the treatment plant: a) the blended well water, b) the bypass water, c) the recycle water, and d) the product water, Optional Approach to Sampling The optional approach would collect coniposite samples at the same locations daily. More intensive surveys would be conducted if a color incident occurs in the distribution system. Trussell Tech suggests that composite samplers be installed at the following locations. - 1. Three locations in the distribution system 2. The blended well water (point"P' on Fig. 1-1) 3� The washwater recycle line (point "Y' on Fig. 1-1) 4. The Bypass line(point "2"on Fig. 1-1) S. The RO effluent (point "T' on Fig. 1-1) 6� The product water exiting the clearwell (point "4" on Fig. I - 1). TRUSSELL TECHNOLOGIES, INC, PASADENA, CA PAGE 1-5 0 1 (A 110 20�0 �O 7'0�0 9� �9 99.9 99.99 P.'�W L.�. Th.n 0, E,..i To Figure 1-2 — Comparison of Average Effiluent Turbidity for RO Feed Conventional Filters and RO Bypass Greensand Filters Based on Online Turbidimeter Data Collected at the GWRP from June — September 2005. EVALUATION OF THE COLORED WATER PROBLEM AND POSSIBLE APPROACHES TO SOLUTION The Tasks as laid out in Exhibit A by MPI will probably resolve the colored water problem, but Trussell Tech believes that, if some modifications are made to this approach, the chances of success can be improved and the cost of the project can be reduced. ('oncepts Behind the Optional Approach. The following four tasks were laid out in Exhibit A: 1. Task I -- Sampling 2. Task 2 — Evaluation of' Treatment Alternatives 1. — Optimization of GWRP _3 Task 3 Processes 4. Task 4 — Optimization of Distribution System Operations Trussell Tech. would like to suggest modifications to Tasks I and 2. As it is currently specified Task I would collect daily samples at three points in the distribution and at the following locations at the treatment plant: a) the blended well water, b) the bypass water, c) the recycle water, and d) the product water, Optional Approach to Sampling The optional approach would collect coniposite samples at the same locations daily. More intensive surveys would be conducted if a color incident occurs in the distribution system. Trussell Tech suggests that composite samplers be installed at the following locations. - 1. Three locations in the distribution system 2. The blended well water (point"P' on Fig. 1-1) 3� The washwater recycle line (point "Y' on Fig. 1-1) 4. The Bypass line(point "2"on Fig. 1-1) S. The RO effluent (point "T' on Fig. 1-1) 6� The product water exiting the clearwell (point "4" on Fig. I - 1). TRUSSELL TECHNOLOGIES, INC, PASADENA, CA PAGE 1-5 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING� EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Five sample bottles will be purchased for each of the composite samplers, one for each day of the work week. Each day, the oldest composite sample will be thrown away at each site and the bottle reused. As a result, there will always be four earlier samples as well as the sample for the current day at each sample site. At the end of each week, an aliquot will be taken from the composite sample for each day and poured into one sample bottle for each site, provided by the laboratory - to create one overall composite sample for each sample site Im the week. This approach provides a complete characterization of plant performance and of conditions in the distribution system, but it reduces the sample load by 80 percent. When an incident occurs and color complaints are triade, the four previous samples will be analyzed as well as sample for the day of the incident as well as the samples for the following two days. As a result we will have sound data on the overall long-term conditions at all sample sites as well as a specific daily record before and after each incident. Equally important samples before and after the incident can be preserved for future analysis should questions arise. Optional Approach to Pilot Work Trussell Tech also recommends that a decision to conduct the pilot work proposed in Task 2 be postponed until the completion of the oxidants analysis in Task 2, the optimization analysis in Task 3 as well as the first 4-6 months of the sampling program as well as preliminary work on Task 4. This will put the team in a strong position to judge the cause of the colored water problem, to understand the part of the plant that is not meeting the city's needs and if piloting is necessary to address the problem. Trussell Tech believes the decision to pilot preoxidants is prerriatine at this time for the following reasons: I ) Piloting is expensive and should out), be conducted if there are identifiable berefits. 2) The Clilorine-pei-iiiaiiganate-a,i-eeiisand approach used on the bypass stream at the GWRP is accepted as the state of the art for the removal of iron and manganese and it is successfully used throughout the country. 3) There is a reasonable possibility that other problerns at the GWRP are responsible for the color problem and it is not clear that an oxidants pilot study would resolve these. Examples are a) the possibility that the washwater recycle, while improved, is still interfering with performance and b) the possibility that the RO membranes it) the GWRP, which have been cleaned man), times an which ate constructed with no brine seal, are contributing to the problem. 4) The use of an oxidant on whole flow may void RO membrane warranty. Boyle proposed gieensand treatment for the whole now during the original desi,,ri but was forced to change to conventional filters before RO and avoid oxidants in order to gain the cooperation of the RO manufacturer. 5) There is very limited or no turbidity data for the RO permeate and the washwater recovery streams and very limited iron and manganese data for any streams other than the raw water and product water. This data is essential for the analysis of possible treatment solutions. 6) Until the sampling, source tracking- and t1ushing studies are completed it is not certain that improving oxidation at the GWRP is the most cost-effective means of solving the color problems. TRUSS15L.1. TECHNOLOGIES, INC PASADENA, CA PAGE 1-6 11 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Approach to Hydraulic Modeling. A hydraulic model, developed based on information extracted from the City's existing GIS shape Files for the 250 pressure zone, will be the central tool for the source tracing task, Hydraulic pathways from and to the 250 pressure zone will be considered to establish the boundary conditions and bypass modeling the entire City-wide system at this time. Sources of watet at the locations of elevated iron and manganese occurrence within the distribution system will be determined. The intent of this task is to determine if the complaints are resulting from the operation of the treatment facility or due to operation of certain distribution systern infrastructure. REFERENCES Bauman, Eric, 2007. Personal Communication. Boyle, 2004, Capistrano Well Water Quality Analysis, Report No. BK -C68-200-85. Dreher, Pierre, 2005a, Letter to Mr. Anthony Nhan, CDHS on July 2005 colored water incident. Dreher, Pierre, 2005b, Letter to Mr. Anthony Nhan, CDHS on September 2005 colored water incident. Dreher, Pierre, 2006, Personal Communication. Griffen, A., 1960, Significance and removal of Manganese in Water Supplies, J A WWA, 52, 1326-1334. MPI, 2006, City of San Juan Capistrano Ground Water Recovery Plant (GWRP) Process Evaluation Memorandum, Final Draft, Jan. 24. Sly, L., et at., 1990, Deposition of Manganese in a Drinking Water Distribution System, Appl. & Env. Micro., 56(3), 628-639. TRUSSELL TECHNOLOGIES, INC PASADENA, CA PAGE 1-7 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO PROJECT APPROACH AND SCOPE Table 2-1 List of Deliverables forTask I OF SERVICES —6—yerall samplhw deliverabies I a) sampling schedule b) sample collection and preservation protocol c) coordination of analysis of samples by local laboratory d) database development and updating as dani described below is collected IA - Daily samplint! for 12 mos. at raw water header supplyine GWRP (Grab or composite SamplinL) a) Iron (total, dissolved) b) Manganese (total, dissolved) 1B - Continuous recording turbidemetLr data I B - Daily samples in treated water for 12 mos. with varying collection times (Grab or comitIosit samplinu) a) Imn (total, dissolved) b) Manganese (total, dissolved)" IC — GWRP sannifinp when turbidity spikes o colored water complaints are received (a) Plan for intensive sampling in Plant (b) Plam to include 3 GWRP locations: RO permeate, bypass filter effluent, washwater recycle line (c) Samples to be analyzed for turbidity, iron (total/dissolved), manganese (total, dissolved) ID — Distribution system grab sampling wben turbidity spikes or colored water complaints are received (a) Plan for sampling locations based on travel lime (b) Sampling locations: 3 in 250 pressure zone and I at 437N to 350S pressure zone reed (c) Samples to be analyzed for turbidity, iron (totalidissolved), manganese (toml, dissolved) ID Alternate - Distribution system camposit 5amplluu when turbid1tv spikes or colored water complaints are received (a) Plan for sampling firequency/sampling location for a composite sampler in 250 pressure zone (b) Samples to be analyzed for turbidity, iron (total/dissolved), manganese (total, dissolved) The project approach and scope of services will build upon the logic laid out in the Project Understanding (Section 1). The scope will encompass execution of all the Tasks as laid out in Exhibit A of the REP. In additiOD, all optional approach to Task I and Task 2 will be included that Trussell Tech believes will 3esu It in a determination of the cause of and the solution to the colored water episodes at a cheaper cost to the approach defined in the RFP. TASK 1 — SAMPLING OF THE RAW WATER, GWRP TREATED WATER AND AT THE DISTRIBUTION SYSTEM The purpose ofTask I is to collect regular monitoring data frorri the raw water, from various locations in the GWR -P, and from the distribution system to aid in determining the source, cause, and extent of the colored watei problems. Table 2-1 shows the deliverables for Task I broken down by sub -tasks. The scope of services for Task I will be described below for both the approach described in Exhibit I of the RFP and the optional approach recommended by Trussell Tech. Approach in the RFP The scope of services for the approach laid out in the REP is described below. As shown in Table 2- 1, a sampling plan and database for storing sample data will be developed before sampling begins. In addition, operators will be briefed on the sampling plan so they will be prepared to take the samples. A local lab was contacted in preparation of the project budget so the seeds of developing a sample collection and preservation protocol have been planted. Task I A Influent Water. As shown in Table 2-1, grab samples for the influent water for the constituents shown in Table 2-1 will be collected daily (5d/wk) at varying times throughout the day over a 12 -mo. period. As an alternate approach, composite samples will be collected daily (5d/wk) over a 12 -mo. period. TRUSSEL-L TECHNOLOGIES, INC. PASADENA, CA PAGE 2-1 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING. EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Task I B GWRP I reated Water Sampling. As shown in Table 2 -1 . the GWRP treated water will be sampled for the constituents shown in Table 2-1. Samples will be collected daily (5d/wlo at varying times throughout the day over a I 2 -mo. period. As an alternate approach, composite samples will be collected daily (5d/wk) over a 12 -mo. period. rask I C Additional Sampling when Turbidity Spikes or Colored Water is Reported. An intersive plan for sampling the Plant when turbidity spikes > 0.3 ntu or when colored water is reported will be developed. Based on past online turbiderrieter data and on the historical record of color complaints, 20 such events were included in the project budget. The constituents to be sampled and the sample locations in the GWRP are shown in Table 2-1, The preliminary plan, to be revisited before the sampling begins, is to have the operators sample at each sample location in the Plant four times per day for the day a color event is reported and also the following day for a total of eight samples. Task ID Distribution System Sampling when Turbidity Spikes or Colored Water is Reported. Air intensive plan for sampling the distribution system when turbidity spikes > 0.3 ntu or when colored water is reported will be developed. Based on past online turbidemeter data and on the historical record of color complaints, 20 such events were included in the project budget. The constituents to be sampled and the protocol for sample locations in the distribution system, to be determined before sampling begins, are shown in Table 2-1. The preliminary plan, to be revisited before the sampling begins, is to have the operators sample at each sairiple location in the distribution system two times per day for the day a color event is reported and also the following day for a total of eight samples. As an alternate approach, a composite samp lei, will be placed in the distribution system at a location to be determined before sampling begins. The composite samples will be analyzed for the constituents shown in Table 2- 1. The preliminary plan, to be revisited before sampling begins, calls for samples to be collected under the same procedure as for the distribution system grab sampling (2X/d for the day of and day following an event). Optional Approach Recommended by Trussell Tech. As discussed in the Project Understanding (Section 1), Trussell Tech recommends an optional approach to meet the objectives of the Task I Sampling at a cheaper cost to the sampling prescribed by the RFP. The optional approach would collect composite samples at the same locations daily. More intensive surveys would be conducted if a color incident in the distribution system. Trussell Tech suggests that composite samplers be installed throughout the GWRP and in the distribution system (locations to be described in the sub -sections below). Sampling Protocol for the Optional Approach Recommended by Trussell Tech. The protocol for sampling is as follows. Five sample bottles will be purchased for each of the composite samplers, one for each day of the work week. Each day, the oldest composite sample will be thrown away at each site and the bottle reused. As a result, there will always be four earlier samples as well as the sample for the current day at each sample site. At the end of each week, an aliquot will be taken from the composite sample for each day and poured into one sarnple bottle for each site, provided by the laboratory - to create one overall composite sample for each sample site for the week. This approach TRUSSELL TECHNOLOGIES, INC PASADENA, CA PAGE 2-2 0 PROPOSAL To PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATtONs RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO provides a complete characterization of plant performance and of conditions in the distribution system, but it reduces the sample load by 80 percent. When an incident occurs and colored water is reported, the four previous samples will be analyzed as well as sample for the day of the incident as well as the samples for the following two days. As a result we will have sound data on the overall long-term conditions at all sample sites as well as a specific daily record before and after each incident. Equally important samples before and after the incident can be preserved for future analysis should questions arise. Based on the historical record, the fee proposal is based on six colored water incidents being reported during the one-year sampling program time frame, Task [A Influent Water A composite sampler will be installed on the influent water stream and samples collected and analyzed as described above. Sampler location: I . The blended well wato (point "I" on Section 1, Fig-, I - 1) Task I B/ I C GWRP Water Sampling Composite samplers will be installed on the following locations in the GWRP: 2. Theblended wellwater(point "I" on Fig. 1-1) 3. The washwater recycle line (point "5" on Fig. I - 1) 4. The Bypass line (point "T' on Fig. 1-1) 5. The RO effluent (point "Y' on Fig. 1-1) 6. The product water exiting the clearwell (point "4" on Fig. I - 1). Samples will be collected according to the protocol described above, which includes the plan for regular sampling and analysis of the GWRP along with the sampling and additional analysis perfornried during events when colored water is reported. Task I D Distribution System Sampling when Turbidity Spikes oi Colored Water 'is Reported Composite samplers will be installed at the following locations. 7, Three locations in (lie distribution system, to be determined during preliminary planning. Samples will be collected and analyzed according to the protocol described above, TASK 2 - EVALUATION OF TRFATMENI At TERNATIVES As stated in Exhibit I of the RFP, "this task will evaluate alternatives for treatment of colored water. Assuming that colored water is caused by the presence of iron and manganese in the water, oxidation followed by filtration is the most preferable solution. Treatment alternatives will be evaluated in this task assuming that GWRP operations will not be altered in response to an iron or manganese spike in the raw water." An optional approach to this task is recommended by Trussell Tech in which the pilot study (Task 2.A.b) will not be conducted at this stage of the project for reasons discussed in the Project Understanding (Section 1). Approach in the RFP. rhe defiverables for Task 2 are summarized in Table 2-2. Table 2-2 List of Deliverables for Task 2 2A.a - Evaluation of Several Pre-treatment Alternatives including letter report summarlwam'. a) evaluation of several alternative oxidants including free chlorine and chlorine dioxide b) desktop calculations and/or bench -scale testing to select a pre -oxidant for further consideration 2A.b — Pilot Study for Selected Pre -oxidant a) Development of pilot plan including costs to setup system and monitor and operate pilot i) pilot operations ii) sampling ii) analysis protocol b) Pilot test of at least 3 mos. c) Assessment Report ZAx — Conceptual Design and Layout for Selected Prc�oxidant 2B — Post-treatment Alternatives ivaluatiInn Desktop evaluation of treatment train of oxidant fccd+filtration on GWRP treated water 2C — Conceptual Level Cost Estimate Level 4 (-30%, +50%) cost estimates for: a) seleoned pre-treatment alternative b) selected post-treatment alternative TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-3 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THEE CITY OF SAN JUAN CAPISTRANO Each sub -task will be described below. Task 2A Pre-treatment Alternatives Evaluation This task will consider addition of an oxidant chemical to the blended well water to oxidize iron and/or manganese for subsequent removal in the GWRP by the RO bypass Filters oi the RO feedwater filters. Task 2A.a Desktop Study As shown in Table 2-2, this sub -task will analyze several alternative pre -oxidants for the oxidation of iron and manganese including free chlorine and chlorine dioxide. The results will be Summarized in a letter report selecting one pre -oxidant for further consideration in the project. Task 2A.b Pilot Study The selected pre -oxidant FTom Task 2.A.a will be tested in a pilot study to demonstrate its applicability for iron and manganese removal. The pilot study will be performed for a period of 3 months and is to be conducted on a side -stream of blended well water prior to its entry to the GWRP. After addition of pre -oxidant to remove iron and manganese, the blended well watei will be treated bys temporary greensand filter in the pilot study to remove precipitated iron and manganese. The fee proposal includes rental of a greensand filter, time for a Trussell Tech engineer to setup the pilot study and assist the operators in running the pilot experiment, and budget for laboratory analysis of iron and manganese (total and dissolved) in the feed and downstream of the greensand Filter. The pilot study will run 24/7 as intermittent operation will introduce reactions that will not be present during Full- scale operation and potentially compromise the results. The detiverabtes for Task 2.A.b are summarized in Table 2-2. Task 2A.c Conceptual Design and Layout, VarousTrussell Tech engineers have extensive experience with conceptual design and layout. In this sub -task a conceptual design and layout for the selected alternative oxidant will be performed. Task 2B Post-treatmern Alternatives Evaluation Another alternative approach to reduce iron and manganese levels entering the distribution system is to post -treat the GWRP treated water with an oxidant feed followed by filtration. As shown in Table 2-2, the deliverable wilt be a desktop soidy of post- treatment alternatives. Task 2C Conceptual Level Cost Estimation. As shown in Table 2-2, the deliverable is I Level 4 (-30%, +50%) cost estimate for the selected pre-treatruent (from Task 2A) and post-treatment (from Task 213) alternatives. The Trussell Tech engineers participating in this project have broad experience with Level 4 cost estimates. Optional Approach Recommended by Frussell Tech. Trussell Tech recommends that a decision to conduct the pilot work proposed in Task 2 (Task 2A.b) be postponed until the completion of the oxidants analysis in Task 2, the optimization analysis in Task 3 as well as the first 4-6 months of the sampling program as well as preliminary worl, on Task 4. This will put the team in a strong position to judge the cause of the colored water problem, to understand the part of the plant that is not meeting the city's needs and if piloting is necessary to address the problem. Trussell Tech believes the decision to pilot preoxidants is premature at this time for the reasons stated in the Project Understanding (Section 1). As a part of the optional approach recommended by Trussell Tech discussed in Task 1, the fee proposal includes this strategy of not conducting the pilot study as a part of this project as an element of the optional approach. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-4 ��A PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO TASK 3 - OPTIMIZATION OF GWRP PROCESSES The purpose of Task 3 is to optimize the performance of the GWRP for better removal of iron and mangoarrese. According to Exhibit I of the RFP, "the premise of this task is that a well operated systern such as the one at GWRP should be capable of effectively removing iron and manganese from the well water, which is anticipated to be the source of colored water complaints." The deliverables for Task 3 are summarized in Table 2-3. TASK 4 - OPTIMIZATION OF DISTRIBUTION SYSTEM OPERATIONS Table 2-4 presents a list of deliverables for Task 4. Each sub -task will be described in detail below. Task 4A Evaluation of the 250 Zone Operational and Functional Conditions The purpose of Task 4A is to assess water quality conditions in the 250 pressure zone because most of the colored water problems have been associated with the 250 pressure zone, There is a concern iron valves and other fixtures in the distribution system may be subject to corrosion and contributing to the colored water episodes. The 250 pressure zone also includes the older part of the City and there may be unlined iron pipe in the distribution system though the City has stated that the colored water reported by consumers is not typically associated with the older parts of the 250 pressure zone (Bauman, 2007). Water samples will be collected at the frequency, in the locations, and for the constituents described in Table 2-2 in order to assess the potential for corrosion contributing to the colored water episodes. Trussell Tech engineers have a unique expertise in this particular area. Table 2-3 List of Deliverables for Task 3 al-Aimization of existine processes in GWRP Ohnited to occurrence of colored water in GNNRP effluent and better removal of iron to manganese) a) recommendations of best operational practices for existing GWRP facility b) estimate of operational changes for Optimized operation c) cost estimate for such operation Table 24 List of Deliverables for Task 4 4A - Evaluation of the 250 Zone Operational and Functional Conditions Study to assess conditions in 250 pressure zone and potential for corrosion of iror) valves and other fixtur es in distribution system pipeliiie� a) sampling protocol b) water samples from at least 3 locations once per Merrill c) samples measured for WQPs including TDS, pit, total alkalinity, calcium, chloride, sulfate. d) calculate LSI based on data collected in this sub - task 4B - Source Tra-ein—p— Hydraulic modeling including: a) Develop hydraulic model using City's existing GIS shape Files b) Run EPS to determine water age primarily focusing on locations in the 250 pressure zone 9 Determine sources of water at location% of elevated troll or manganese occurrence d) Identify if issues with color complaints are from operation of treatment facility or due to operation of curtain distribution system infrastructure. 4C -Evaluation of FlushinL Proaram a) Evaluation of the City's existing flushing program b) Identification of opportunities to improve delivery of fresh water at various locations in the distribution system TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-5 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO 'I ask 4B Source 'I racing. Task 4B will be divided into six sub -tasks discussed below. Task 4B I Meetings. Data Collection, and I ask Management This task includes project triectings, data collection, task management, meeting -agendas, and monthly progvess reports. Task 4132 Seasonal Demand Analysis and Geocoefing from Water Billing Records. Monthly City-wide production records for the past 5 years will be evaluated to determine the seasonal demand variations within the City. The objective is to identify the maximum day demands, typical average day demands, and the low winter demand periods. Water age tends to be a factor during the to", demand periods. In this task, water demand peaking factors will be recommended. The hitting records will be normalized and geocoded to the model junction nodes within the 250 Pressure 70nes This methodology provides a more accurate distribution of demands for modeling purposes. Though this task will focus on the pressure zone 250, this same methodology can be used by the City to complete the assembly of the entire distribution system, following the completion of this project. Task 4B3 Hydraulic Model Development from GIS and from Input/Output Location Information. The City has invested in a GIS that includes the water distribution system and its appurtenances. The 250 pressure zone includes approximately 15,000 pipes, 5,300 valves, and 1,700 hydrants. The GIS shapefiles will be exported to the hydraulic model. The project team is equally competent with commercially available hydraulic models including MWHSoft H20NET, H20MAP Water, and Infowater, as well as Bentley's WaterGEMS. It is our understanding that City staff currently own an 1420MAP water license. Since the hydraulic engine contained in these software packages are identical, our team Proposes to perforin the analysis using a software most preferred by City staff. A long term City goal may be to build on the 250 pressure zone model and assemble a City-wide model that will be maintained by City staff During the kickoff meetina we will discuss the benefits of 7 using 1120MAP Water, currently owned by the City, versus Infowater which runs inside ArcMAP, Since the 250 pressure zones is interconnected to other pressure zones, the boundary conditions consisting ofwater flowing into and out of this zone, are exceptionally important. Historical and seasonal operational data for water entering and leaving this zone will be collected from the SCADA system. The intent is to simulate realistic boundary conditions for the demand scenarios that will be used for the source tracing task. Task 4134 Hydraulic Model Calibration to SCADA and optional Pressure Monitors, Calibration provides a measure of confidence in the model simulated results. SCADA data will be used to calibrate the boundary conditions, including the operations of pump stations and storage reservoirs influencing this pressure zone. Calibration within the distribution system of the 250 pressure zone is an optional, though desired task. This task involves installing up to 6 pressure loggers at critical locations within the distribution system and monitoring pressures for a period of one week. This task assumes the pressure loggers, if available, will be installed by the City's operation staff. The model will be calibrated for the extended period simulation, using the data available from SCADA and the optional pressure loggers. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-6 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO 'I ask 4135 Source Tracing In this task, the model will be used for the source tracing simulations. Water age through the distribution system will be mapped for average day demand, maximum day demand, and minimum winter day demand. The model will be used to monitor the area of influence from each source entering the 250 pressure zone and from the storage reservoirs. The focus of the analysis will be the areas of elevated iron or manganese occurrences within the distribution system, The preliminary analysis results will be presented to City staff for discussions and for evaluating further analysis scenarios. The team feedback will be used to model the final scenarios, draw conclusions, and develop recommendations. Task 4136 Technical Memorandum A technical memorandum will document the hydraulic model development, calibration, and modeling. Task 4C - Evaluation of Flushing Program The team will evaluate the existing flushingg program utilized by the City, The hydraulic model will be used to assist the project team in evaluating opportunities for improving delivery of fresh water at various distribution system locations. Various possibilities will be considered including unidirectional flushing. OPTIONAL. TASK A — FINAL REPORT The scope and deliverables discussed above include all those prescribed by the RTP. An Optional Task A (OT -A) is included in the Fee Proposal for a final report to present the I-eSUlts all four tasks simultaneously. TRUSSELL TECHNOLOGIES, INC, PASADENA, C:A PAGE 2-7 0 11 City of San Juan Capistrano Colored Water Evaluation Trussell Technologies Inc. Fee Proposal - Cost Summary Task Base Budget Base with Alternates Budget TT Recom- mended Budget Task 1: Sampling of the Raw Water, GIVRP Treated Water and at the Distribution System 62,098 63,617 44,173 A Influent Water $11,192 NA NA A (Alternate) Influent Water Composite Sampler NA $12,385 $7,808 B (a) Finished Water Turbidity $2,210 $2,210 $2,210 B (b) Inorganic Water Quality Parameters $11,192 NA NA B (b) Alternate Inorganic Water Quality Parameters, Composite Sampler NA $12,385 $18,629* C Turbidity Spike Monitoring $21,472 $21,472 NA* D Distribution System Sampling $16,032 NA NA D Distribution System Sampling Composite Sampler NA $15,165 $15,526 Task 2: Evaluation of Treatment Alternatives $144,879 $144,879 $64,368 A (a) Pre-treatment Alternatives Evaluation $11,880 $11,880 $11,880 A (b) Pilot Test. $80,511 $80,511 $0 A (c) Conceptual Layout $12,608 $12,608 $12,608 B Post-treatment Alternatives Evaluation $11,880 $11,880 $11,880 C Pre-treatment and Post-treatment Alternatives Conceptual Level Cost Estimation $28,000 $28,000 $28,000 Task 3: Optimization of GWRP Processes $14,944 $14,944 $14,944 Task 4: Optimization of Distribution Systems Operations $76,454 $76,454 $76,454 A 250S Zone Functional Conditions $12,532 $12,532 $12,53 B 250S Modeling / Source Tracing $52.199 $52,199 $52,199 B 250S Evaluation of Flushing Programs $11,723 $11,723 $11,723 TOTAL $298,375 $299,894 $199,939 *Budget for TT Recommended approach to turbidity spike/colored water episodes included in B(b) Alternate Inorganic Water Quality Parameters, Composite Sampler EXHIBIT "B" 0 32400 PASEO ADELANTO SAN JUAN CAPISTRANO, CA 92675 (949) 493-1171 (949) 493-1053 FAX www sanjuancapistrano. Org TRANSMITTAL TO R. Shane Trussell, PhD, P.E. Trussell Technologies, Inc. 11622 El Camino Real, Suite 100 San Diego, CA 92130 DATE: October 26, 2007 EST ILIRIE1 776 FROM: Maria Morris, Deputy City Clerk (949) 443-6309 RE: Personal Services Agreement — Colored Water Study MEMBERS OF THE CITY COUNCIL SAM ALLEVATO THOMAS W. HRIBAR MARK NIELSEN JOE SOTO DR. LONDRES USO Thank you for providing documentation confirming compliance with the terms of the agreement related to insurance. Please keep in mind this documentation must remain current with our office during the term of this agreement. If you have questions related to insurance requirements, please call me at (949) 443-6309. If you have questions concerning the agreement, please contact Eric Bauman, Water Engineering Manager (949) 487-4312. An original agreement is enclosed for your records. Cc: Eric Bauman, Water Engineering Manager San Juan Capistrano: Preserving the Past to Enhance the Future CIE PonfiKI on 100% recyd� pa,,er 0 0 Page I of 1 Maria Morris From: Maria Morris Sent: Thursday, October 11, 2007 12:59 PM To: Eric Bauman Cc: Christine Casper Subject: Trussell Technologies, Inc.- Colored Water Study Hi Eric, I need the insurance certificates for Trussell. ThanksH Maria Morris Deputy City Clerk 32400 Paseo Adelanto San Juan Capistrano, CA 92675 (949) 443-6309 (949) 493-1053 -Fax 10/11/2007 0 Trussell. 17 October 2007 Ms. Christine Casper Public Works Administrative Specialist City of San Juan Capistrano 32400 Pasco Adclanto San Juan Capistrano CA 92675 PUBLIC WORKS DEPARTMENT OCT 19 2001 CITY OF SAN JUAN CAPISTRANO RE: Personal Services Agreement — Construction Contract Engineering Design Services for Testing, Evaluation and Recommendations Relating to Colored Water — City of San Juan Capistrano Christine: Referencing my transmittal to you, dated September 26, 1 would like to advise that the contact address for Shane Trassell should be changed. We have recently relocated our San Diego offices to: 6540 Lusk Boulevard, Suite C175 San Diego CA 92121 PH: 858/458-1030 Sincerely, 6 yne . Chesebrough .ej c Manager .... .. CA 9 i 1, � I 0 10/2/2007 AGENDA REPORT G 2a TO: Dave Adams, City Manager &A FROM: Cindy Russell, Interim Public Works Director SUBJECT: Consideration of Agreement for Colored Water Study and Appropriation of Funds (Trussell Technologies Inc.) RECOMMENDATION: By motion, 1. Approve the agreement with Trussell Technologies Inc. to test and evaluate for the causes of the colored water in the distribution system in the amount of $199,939; 2. Appropriate $250,000 from the Ground Water Recovery Plant (GWRP) fund reserves to cover the cost of the Colored Water Study. SITUATION: The City of San Juan Capistrano has experienced a significant level of customer complaints about colored water since June of 2005. The problem was at first mitigated through a program of hydrant flushing when complaints occurred. At this point, the frequency and degree of complaints have risen beyond levels that can be addressed by a flushing program. Given that colored water can come from many complex interactions or even multiple sources, the City hired Malcolm Pirnie, Inc. to develop a Study Plan to assess water quality issues associated with the colored water. This Study Plan was utilized as a means of defining the problem and the approximate range of investigation needed in a solicitation of proposals to perform the study of the colored water problem. The Study Plan was prepared after careful evaluation of the data available to Malcolm Pirnie related to the colored water occurrences. The available data included; a) The Ground Water Recovery Plant (GWRP) system and basic operational information, b) information about the distribution system network, c) raw well water quality, d) water quality being produced by the GWRP, and e) listing of the customer complaints during colored water occurrences. The proposed Study Plan included several tasks designed to carefully evaluate the potential sources and causes of the colored water. The tasks consisted of sampling of the water in the system including: import, well, system water at several points, raw water and the product water of the GWRP. The sampled water is to be tested for key parameters that could explain the source of the color and the exact Agenda Report Page 2 October 2, 2007 mechanism by which it materializes. After a careful evaluation of the source(s) of the problem, the Study Plan considered an evaluation of the solutions including: a desk top study of corrective actions, a pilot treatment plant, and a cost evaluation of the studied solution. The Study Plan was solicited to firms that have experience in the study and evaluation of colored water. The firms were PSOMAS & Assoc., Black & Veatch, Malcolm Pirnie, and Trussell Technology, Inc., Proposals were received from Malcolm Pirnie and Trussell Technology. The proposal by Malcolm Pirnie follows the Study Plan with no changes. The proposal by Trussell Technology followed the Study Plan except for a recommendation to remove the pilot study, and Trussell included the cost of testing in its response, unlike that of Malcolm Pirnie. Trussell's recommendation to drop the pilot study was based on its evaluation that the true nature of the problem had not yet been identified, and that the results of the monitoring and sampling combined with the process study may yield the need for a much different pilot study than outlined in the Study Plan. Adjusting the cost of the proposals for the cost of the testing and the difference on the pilot study, Trussell will cost less ($298,375) than Malcolm Pirnie (approximately $370,000). Staff recommends the modified proposal by Trussell Technology, costing $199,393, which eliminates some of the testing in favor of performing more compositing, and defers the pilot study recommended by the Study Plan. The pilot study may or may not be required depending on the study results, and if required, will in Trussell Technology's opinion, require modification from that recommended by the Study Plan; requiring the solicitation of the pilot study at a later date. Summary and Recommendation: Staff recommends accepting the modified proposal recommended by Trussell Technology, Inc. in the amount of $199,939. COMMISSION/BOARD REVIEW AND RECOMMENDATIONS: This item will be presented to the Water Advisory Commission at its meeting of September, 25, 2007. The comments of the commission will be presented orally. FINANCIAL CONSIDERATIONS: The projected budget for the analysis phase of this project is estimated at $250,000. This amount covers that cost of the contract, plus approximately $50,000 is additional staff, equipment and other expenses that may be necessary. For example, the sampling requirements of the contract may result in the need for increased staff time and/or temporary staffing. If no additional costs are needed these funds would no be used. Additionally, the cost of this project is recommended to be funded from the GWRP fund. Although the fund reserves may not be sufficient to fund the project, the cash flow deficit can be covered from the capital replacement or debt service reserves on a temporary basis. Agenda Report 0 0 Page 3 October 2, 2007 If pilot testing of a developed solution is conducted, the cost of pilot testing phase may cost an additional $100,000. The cost of implementing the ultimate solution is unable to be determined at this time. NOTIFICATION: Malcolm Pirnie, Inc. Trussell Technology, Inc. RECOMMENDATION: By motion, 1. Approve the agreement with Trussell Technologies Inc. to test and evaluate for the causes of the colored water in the distribution system in the amount of $199,939; 2. Appropriate $250,000 from the Ground Water Recovery Plant (GWRP) fund reserves to cover the cost of the Colored Water Study. Respectfully submitted, &T14 kw&u-- Cindy Rusgell Interim Public Works Director, Attachment(s): 1. Agreement Prepared by Eric Bauman Water Engineering Manager 0 0 PERSONAL SERVICES AGREEMENT THIS AGREEMENT is made and entered into this day of _ 1 2007, by and between the City of San Juan Capistrano (hereinafter referred to as the "City") and Trussell Technologies, Inc., (hereinafter referred to as "Consultant"). RECITALS: WHEREAS, City desires to retain the services of Consultant regarding the City's request for proposals for Engineering Design Services for the Testing, Evaluation, and Recommendations Relating to the Colored Water; and WHEREAS, Consultant is qualified by virtue of experience, training, education and expertise to accomplish such services. NOW, THEREFORE, City and Consultant mutually agree as follows: Section 1. Scope of Work. The scope of work to be performed by Consultant shall consist of those tasks as set forth in Exhibit 'A" described as the Cover Letter and Sections 1 & 2 of Consultant's proposal for the above described work, dated September 10, 2007; attached and incorporated herein by reference. Consultant warrants that all of its services shall be performed in a competent, professional and satisfactory manner and in accordance with the prevalent standards of its profession. Section 2. Term. This Agreement shall commence on the effective date of this Agreement and services required hereunder shall be completed by no later October 31, 2009. Section 3. Compensation. 3.1 Amount. Total compensation for the scope of services for this Project shall not exceed One Hundred Ninety Nine Thousand, Nine Hundred Thirty Nine ($199,939 ), as set forth 1 ATTACHMENT I 0 0 in Exhibit "B," described as the Fee Proposal Cost Summary of Consultant's proposal for the above described work, attached and incorporated herein by reference. 3.2 Rate Schedule. The services shall be billed to the City at the hourly rate set forth in Exhibit "B," attached and incorporated herein by reference. Included within the compensation are all the Consultant's ordinary office and overhead expenses incurred by it, its agents and employees, including meetings with the City representatives and incidental costs to perform the stipulated services. Submittals shall be in accordance with Consultant's proposal. 3.3 Method of Payment. Consultant shall submit monthly invoices based on total services, which have been satisfactorily completed and specifying a percentage of projected completion for approval by the City. The City will pay monthly progress payments based on approved invoices in accordance with this Section. For extra work not part of this Agreement, a written authorization from City is required prior to Consultant undertaking any extra work. 3.4 Records of Expenses. Consultant shall keep complete and accurate records of all costs and expenses incidental to services covered by this Agreement. These records will be made available at reasonable times to City. Section 4. Independent Contractor. It is agreed that Consultant shall act and be an independent contractor and not an agent or employee of City, and shall obtain no rights to any benefits which accrue to City's employees. Section 5. Limitations Upon Subcontracting and Assignment. 2 The experience, knowledge, capability and reputation of Consultant, its principals and employees were a substantial inducement for City to enter into this Agreement. Consultant shall not contract with any other entity to perform the services required without written approval of the City. This Agreement may not be assigned, voluntarily or by operation of law, without the prior written approval of the City. If Consultant is permitted to subcontract any part of this Agreement by City, Consultant shall be responsible to City for the acts and omissions of its subcontractor as it is for persons directly employed. Nothing contained in this Agreement shall create any contractual relationships between any subcontractor and City. All persons engaged in the work will be considered employees of Consultant. City will deal directly with and will make all payments to Consultant. Section 6. Chan-ges to Scope of Work. In the event of a change in the Scope of Work provided for in the contract documents as requested by the City, the Parties hereto shall execute an addendum to this Agreement setting forth with particularity all terms of the new agreement, including but not limited to any additional Consultant's fees. SectJon 7. Familiarity with Work and Constructton Site. By executing this Agreement, Consultant warrants that: (1) it has investigated the work to be performed; (2) it understands the facilities, difficulties and restrictions of the work under this Agreement. Should Consultant discover any latent or unknown conditions materially differing from those inherent in the work or as represented by City, it shall immediately inform City of this and shall not proceed with further work under this Agreement until written instructions are received from the City. Section 8. Time of Essence, Time is of the essence in the performance of this Agreement. Section 9. Compliance with Law. Consultant shall comply with all applicable laws, ordinances, codes and regulations of federal, state and local government. Section 10. Conflicts of Interest. Consultant covenants that it presently has no interest and shall not acquire any interest, direct or indirect, which would conflict in any manner or degree with the K performance of the services contemplated by this Agreement. No person having such interest shall be employed by or associated with Consultant. Section 11. Copies of Work Product. At the completion of the contract period, Consultant shall have delivered to City at least one (1) copy of any final reports and architectural drawings containing Consultant's findings, conclusions, and recommendations with any support documentation. All reports submitted to the City shall be in reproducible format. All services to be rendered hereunder shall be subject to the direction and approval of the City. Section 12. Ownership of Documents. All reports, information, data and exhibits prepared or assembled by Consultant in connection with the performance of its services pursuant to this Agreement are confidential to the extent permitted by law, and Consultant agrees that they shall not be made available to any individual or organization without prior written consent of the City, All such reports, information, data, and exhibits shall be the property of the City and shall be delivered to the City upon demand without additional costs or expense to the City. The City acknowledges such documents are instruments of Consultant's professional services. Section 13. Indemnity. Consultant agrees to protect, defend and hold harmless City, its elected and appointed officials and employees from any and all claims, liabilities, expenses or damages of any nature, including attorneys' fees, for injury or death of any person or damage to property or interference with use of property and for errors and omissions committed by Consultant arising out of or in connection with the work, operation or activities of Consultant, its agents, employees and subcontractors in carrying out its obligations under this Agreement. Section 14. Insurance. Insurance required herein shall be valid for a minimum of one year, or term of contract, whichever is longer, and it shall be provided by Admitted Insurers in good standing with the State of California and having a minimum Best's Guide Rating of A - Class VII or better. 14.1 Comprehensive General Liability. 4 0 0 Throughout the term of this Agreement, Consultant shall maintain in full force and effect Comprehensive General Liability coverage in the following minimum amounts: $500,000 property damage; $500,000 injury to one person/any one occurrence/not limited to contractual period; $1,000,000 injury to more than one person/any one occurrence/not limited to contractual period. 14.2 Comprehensive Automobile Liability. Throughout the term of this Agreement, Consultant shall maintain in full force and effect Comprehensive Automobile Liability coverage, including owned, hired and non - owned vehicles in the following minimum amountsi $500,000 property damage; $500,000 injury to one person/any one occurrence/not limited to contractual period; $1,000,000 injury to more than one personlany one occurrence/not limited to contractual period 14.3 Worker's Compensation. If Consultant intends to employ employees to perform services under this Agreement, Consultant shall obtain and maintain, during the term of this Agreement, Worker's Compensation Employer's Liability Insurance in the statutory amount as required by state law. 14.4 Proof of Insurance Requirements/Endorsement. Prior to beginning any work under this Agreement, Consultant shall submit the insurance certificates, including the deductible or self -retention amount, and an additional insured endorsement to the Consultant's general liability and umbrella liability policies to the City Clerk's office for certification that the insurance requirements of this Agreement have been satisfied. 14.5 Notice of Cancellation/Termination of Insurance. The above policy/policies shall not terminate, nor shall they be cancelled, nor the coverages reduced, until after thirty (30) days' written notice is given to City, except that 5 ten (10) days' notice shall be given if there is a cancellation due to failure to pay a premium. 14.6 Terms of Compensation. Consultant shall not receive any compensation until all insurance provisions have been satisfied. 14.7 Notice to Proceed. Consultant shall not proceed with any work under this Agreement until the City has issued a written "Notice to Proceed" verifying that Consultant has complied with all insurance requirements of this Agreement. Section 15. Termination. City shall have the right to terminate this Agreement without cause by giving thirty (30) days' advance written notice of termination to the Consultant. In addition, this Agreement may be terminated for cause by providing ten (10) days' notice to the Consultant of a material breach of contract. If the Consultant does not cure the breach of contract, then the agreement may be terminated subsequent to the ten (10) day cure period. Section 16. Notice. All notices shall be personally delivered or mailed to the below listed addresses, or to such other addresses as may be designated by written notice. These addresses shall be used for delivery of service of process: To City: City of San Juan Capistrano 32400 Paseo Adelanto San Juan Capistrano, CA 92675 Attn: Public Works Director To Consultant: Trussell Technologies, Inc. 11622 El Camino Real, Ste 100 San Diego, CA 92130 Attm R. Shane Trussell, PhD, P.E. Section 17. Attorneys' Fees. If any action at law or in equity is necessary to enforce or interpret the terms of this Agreement, the prevailing party shall be entitled to reasonable attorneys' fees, costs and necessary disbursements in addition to any other relief to which he may be entitled. R Section 18. Dispute Resolution. In the event of a dispute arising between the parties regarding performance or interpretation of this Agreement, the dispute shall be resolved by binding arbitration under the auspices of the Judicial Arbitration and Mediation Service ("JAMS"). Section 19. Entire A-greement- This Agreement constitutes the entire understanding and agreement between the parties and supersedes all previous negotiations between them pertaining to the subject matter thereof. IN WITNESS WHEREOF, the parties hereto have executed this Agreement. ATTEST: Margaret R. Monahan, City Clerk APPROVED AS TO FORM: John R. S Irv, City Attorney 7 CITY OF SAN JUAN CAPISTRANO 97 Sam Allevato, Mayor CONSULTANT an Trusselt 10 September 2007 Mr. Eric P. Bauman, P.E. Water Engineering Manager City of San Juan Capistrano Public Works Department 32400 Paseo Adelanto San Juan Capistrano, California 92675 Re: Proposal to Provide Engineering Design Services for the Testing, Evaluation and Recommendations Relating to Colored Water Dear Mr. Bauman: The purpose of this letter is to transmit our proposal prepared in response to your RFP, dated August 13, 2007, requesting proposals to provide Engineering Design Services for the Testing, Evaluation, and Recommendations Relating to Colored Water. Trussell Technologies, Inc. is particularly pleased to submit a proposal in response to this RFP because we believe this is a project that our organization is uniquely suited to perform. Also, we want to personally thank you for the time you spent explaining the situation to us and helping us understand San Juan Capistrano's needs. We have retained the services of the Akel Engineering Group to assist us on the system modeling in Task 4. Tony Akel's experience in this area is exceptional, and we are confident you will be pleased, Colored water problems have plagued water utilities from the beginning of time. We feel it is important to resolve these problems because they have a direct impact on consumer confidence. At the same time, such problems are often not easily solved. The key to success in resolving such problems is to determine their cause. As a result we support the basic approach outlined in the RFP and, as you requested, we have prepared a scope of work and an estimate designed to respond directly to the services described in the RFP. At the same time we are proposing some changes to the approach detailed in the RFP in the form of an optional scope. We believe these changes will save the City money and, at the same time, improve the chance of success. They are based on our experience that such color problems often result from gradual accumulation of iron and/or manganese in the system over time, and show a poor correlation with the performance of the treatment plant on any one given day. As a result we are proposing a unique application of composite samplers; both at the treatment plant and in the distribution system to simultaneously accomplish three objectives: a) find if there is a direct correlation between treatment plant effluent quality, b) document conditions in the distribution system throughout the year, and c) document the quality of all the streams in the treatment plant so that efforts to troubleshoot the treatment process can be targeted where they will make the most difference. In this regard, we propose sampling raw water header, the bypass stream, the recycle stream, the RO stream and the final product water from the clearwell so that all aspects of plant performance can be examined. EXHIBIT "A" 1�21�, 411, 0 9 Mr. Eric P. Bauman, P.E. — City of San Juan Capistrano 10 September 2007 Page -2- RE: Proposal to Provide Engineering Design Services for the Testing, Evaluation and Recommendations Relating to Colored Water We propose that, during normal weeks, a single week-long composite sample be prepared for sites throughout the treatment plant and in the distribution system. This will give us a complete record of all the inputs and outputs. So that this composite can be prepared, we plan to save the composites from the first part of the week so they can be combined into one composite at the end of the week. These stored samples create another opportunity. When a colored water incident occurs, we will be able to analyze water throughout the system and the treatment plant for several days before and after the incident. This maximizes the likelihood that we will be able to identify any correlations to be found. We save money but learn more. It is also proposed that the budget for pilot studies be retained by the City until a time when testing can be identified that will directly address the cause of the color problem. Based on the information we've seen to date, there are three possible issues that might be investigated at the treatment plant: a) poor performance of oxidants ahead of the greensand filter (target of the pilot work proposed in the RFP), b) interference of recycled wash water with the performance of the greensand filters (this was the problem in the Camp Pendleton system where Trussell Tech is involved in a project to improve performance), and c) poor performance of the RO in removing manganese (manganese is now higher than anticipated during design). Desktop studies may show that pilot testing is not required. Trussell Tech has reviewed the sample Professional Services Agreement provided by the City and is claiming no qNggptions to its standard terms and conditions. This proposal is an offer valid for a 90 -day period. We hope you find our proposal interesting and responsive. We assure you that if Trussell Technologies, Inc. is selected to do this project you will receive the direct attention of the principals of the firm. Very Truly Yours R. Shane Trussell, Ph.D., P.E. Vice -President, Trussell Technologies, Inc. 0 CITY OF SAN JUAN CAPISTRANO and, c 1-n rr, c, 1-16, �nion(, 1 I () (� (.) I (.) I (, ��, \ / \ /ai -i, (-- ! f (--) I e ( i of i I'l a I TABLE OF CONTENTS Section I - Project Understanding Section 2 - Project Approach and Scope of Services Section 3 - Qualifications and Experience Section 4 - Project Team Section 5 - Project Schedule Section 6 - Non-Collusio.n Statement Section 7 - Resumes of key Personnel Trussell, 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMmENoAncNs RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO PROJECT UNDERSTANDING The City of San Juan Capistrano (henceforth referred to as the "City") has been receiving persistent colored water complaints in its distribution system. The City hired Malcolm Pimie Inc. (MPI) to develop a Study Plan to assess water quality issues associated with the complaints. The proposed project encompasses execution of the Study Plan as written by MPL At the same time, the proposed project will lay out an alternative strategy to identify the source of the color and to eliminate the colored water episodes. it is our belief that judicious use of week-long composite samples at several locations will improve the chance of success. We also propose that the City retain the budget for pilot studies until a time when it is certain that the testing to be conducted will directly address the cause of the color problem. BACKGROUND Before providing background on the specific problem being experienced by the City, it is useful to provide a little background on the experiences of other utilities with colored water problems. Colored Water. Colored water is a common cause of consumer complaints and there are many causes of colored water. The most common example is the colored water that occurs in the dead ends of almost every water system. For most of the 201h century cities with low alkalinity water (e,g. Portland, OR; Tacoma and Seattle, WA; Boston, MA; New York, NY; and Sydney, Aus.) experienced red water complaints resulting from iron release in cast iron mains. These same cities also experienced blue and green water at the consumer's taps due the action of the same water on consumer plumbing. A few cities have also experienced a blue water phenomenon that has been attributed to the action of bacteria on consumer plumbing (e.g. EBMUD in Oakland, CA). Another common problem is the red water after a municipality changes from an uneblorinated deep well supply to a chlorinated surface supply. This happened in parts of Long Beach in the 1960s, in Upland, CA in the 1970s and in Tucson, AZ in the 1990s. Red water is also more common in systems with high chloride water using cast iron or ductile iron mains. Besides dead ends, the most prevalent colored water problem today is probably red water associated with iron mains. Yellow, brown or black water associated with manganese is also a common problem. Some confusion exists concerning acceptable levels of manganese. EPA's secondary MCL for manganese is 50 gg/L. Although keeping manganese below 50 Ixg/L is usually adequate to prevent staining of fixtures, lower levels are required to prevent periodic occurrences of colored water. Over the years, the quality of the distribution systems has improved, consumers have become accustomed to higher quality water and more utilities are now finding that very low manganese levels are required to prevent consumer complaints. When manganese is present in water entering the distribution system, it deposits on pipeline surfaces and, periodically the deposit comes loose, making colored water. In 1960, A. Griffen, Chair of the AWWA Task Group on Manganese Deposition in Pipelines concluded that a range of 10 to 20 lig/I could be safely tolerated (Griffen, 1960). Thirty years later a careful study was done in Brisbane, Australia (Sly et al, 1990). This study reported that consumer complaints were only eliminated when manganese levels in the treatment plant effluent were consistently less than 20 gg/L, with an average level near 10 pg/L. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-1 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY Or SA14 JUAN CAPISTRANO San Juan Capistrano. The City has historically relied on imported water from the Metropolitan Water District of Southern California (MWDSC) as the primary source of its drinking water. In order to decrease its dependence on imported water, the City retained ECO Resources Inc. to design, build, and operate a Ground Water Recovery Plant (GWRP) to treat groundwater from six wells: Capistrano Valley Water District (CVWD-1), Dance Hall, Kinoshita, San Juan Basin 2 (SJB-2), San Juan Basin 4 (SJB-4), and Tirador. Well water quality. The six wells serving the GWRP have varying quality. Table I -I shows the average turbidity, iron, manganese, and TDS for each of the six wells based on sampling conducted in 2004 along with the design raw water quality (DRWQ). Iron and manganese are highlighted because they often cause color episodes in distribution systems. Table 1-1 also shows the maximum production that was anticipated from each well. Table 1-1 shows that certain wells are of considerably lower quality than others, notably Dance Hall and Tirador. The report by Boyle cited in Table 1-1 also noted one well would be used as a stand-by well and that not all wells would be used under typical operation. The Boyle report also showed a scenario where blending five wells would result in a manganese concentration that exceeded the DRWQ (Boyle 2004). Based on the experience of ECO Resources in operating the plant, it is known that the wells were not capable of producing the anticipated amount of water shown in Table 1-1 (Dreher, 2006). Therefore, it is possible that the blending of well water may result in conditions where the DRWQ for manganese is exceeded. It has been observed recently that the blended well water manganese concentration has been higher than the DRWQ, — 1.5 mg/L (Bauman, 2007). While the blended well water manganese concentrations have been higher than expected, they are consistent over a period of time and not subject to fluctuations that correspond with the color episodes. Therefore, the City believes the well water quality, alone, is not likely the cause of the intermittent color episodes (Bauman, 2007). Description of the Groundwater Recovery Plant (GWRP). The GWRP treats a portion of the flow with reverse osmosis preceded by conventional multimedia filtration pretreatment. No oxidants are added upstream of the RO process. The remaining portion of the flow bypasses the RO and is treated by oxidation followed by greensand filtration. For the bypass stream, sodium hypochlorite is added prior to the greensand filter to oxidize the iron and potassium permarganate is added to oxidize the manganese. Figure I -I shows a simplified schematic of the GWRP process. Figure 1-1 includes enough detail to describe the issues related to the proposed project and is not intended to show all details. For example, certain chemical feeds are omitted from Figure 1-1, such as the sodium bisulfite added upstream of the RO, the caustic soda added to the RO permeate, the free chlorine Table 1-1 - Well Water Quality and Expected Maximum Production lConstituent or Parameter DAWO _dV_WD-1 Well S.J.:B 2 =JB Tired—or 30 0.52 p� 1— ;4 58.5 1 2200 1 1070 1 1 SWI 1 1270 ion (gpm) I NIA > 1,000 1 1,000 1 - 500 1 > 1,000 1 - 1,000 �J_ullluo 1,00 Source: Boyle (2004) TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-2 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO added to the blended RO permeate/bypass stream prior to the clearwell, and the aqua ammonia and sodium hypochlorite added downstream of the clearwell before the water enters the distribution system. The numbers that appear on Figure 1-1 correspond to sampling locations, which will be discussed later in the proposal. Colored water complaints. The City has received persistent colored water complaints from residents since the GWRP began operation in December 2004. A map of the distribution system provided by the City showed that in eight colored water episodes since 2005, most of the customer complaints occurred in the 250S pressure zone. July 2005. A colored water complaint was received in July 2005 that resulted in operational changes to the GWRP. On July 17, 2005, the GWRP had a turbidity spike of > 1 .0 NTU that lasted for 12 minutes. During the episode, customers were calling the City complaining of "brown water." At the time, the GWRP was not alarmed for turbidity spikes (Dreher, 2005a). Upon investigation, it was determined that solids buildup in the washwater recovery tanks was resulting in increased turbidity of the clarified washwater recycle line that is fed to the RO bypass greensand filters. In essence, it was determined that the wasbwater line was drawing from a layer. of high concentration solid material at the bottom of the washwater recovery tanks. In the short- term, ECO began pumping out the higher concentration material from the washwater recovery tanks. For the long-term, ECO instituted weekly flushing of backwash water to the SOCWA wastewater plant and initiated a program of visual inspection of the backwash water tanks interior to determine if buildup is occurring. Additionally, an alarm was put in place to shut down the washwater recovery pumps when turbidity in the RO bypass filter effluent exceeds 0.2 NTU (Dreher, 2005a). September 2005. A colored water complaint was received in September 2005 that resulted in additional changes to the GWRP operating procedures. On September 23, 2005, a turbidity spike was observed in the GWRP in the influent to the clearwell (see Figure 1-1) with a duration of 1.5 hours and > I NTU for 20 minutes (Dreher, 2006b). In a letter from ECO's plant operator to CDHS, it was noted that it was only the second time since plant operations began that colored water complaints were preceded by a turbidity spike. it was also noted that "post prior incidents have been related to distribution system issues." (Dreher, 2006b). TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-3 'Conve itional 3) Product 1/ Clearwell Kil tr Fill tion Water Blended Well Water Greensand Filtration Bypass Washwater L Recyclei Oxidant Line NaOCI KMnO, Figure 1 -1 -Simplified Schematic of the GWRP Process added to the blended RO permeate/bypass stream prior to the clearwell, and the aqua ammonia and sodium hypochlorite added downstream of the clearwell before the water enters the distribution system. The numbers that appear on Figure 1-1 correspond to sampling locations, which will be discussed later in the proposal. Colored water complaints. The City has received persistent colored water complaints from residents since the GWRP began operation in December 2004. A map of the distribution system provided by the City showed that in eight colored water episodes since 2005, most of the customer complaints occurred in the 250S pressure zone. July 2005. A colored water complaint was received in July 2005 that resulted in operational changes to the GWRP. On July 17, 2005, the GWRP had a turbidity spike of > 1 .0 NTU that lasted for 12 minutes. During the episode, customers were calling the City complaining of "brown water." At the time, the GWRP was not alarmed for turbidity spikes (Dreher, 2005a). Upon investigation, it was determined that solids buildup in the washwater recovery tanks was resulting in increased turbidity of the clarified washwater recycle line that is fed to the RO bypass greensand filters. In essence, it was determined that the wasbwater line was drawing from a layer. of high concentration solid material at the bottom of the washwater recovery tanks. In the short- term, ECO began pumping out the higher concentration material from the washwater recovery tanks. For the long-term, ECO instituted weekly flushing of backwash water to the SOCWA wastewater plant and initiated a program of visual inspection of the backwash water tanks interior to determine if buildup is occurring. Additionally, an alarm was put in place to shut down the washwater recovery pumps when turbidity in the RO bypass filter effluent exceeds 0.2 NTU (Dreher, 2005a). September 2005. A colored water complaint was received in September 2005 that resulted in additional changes to the GWRP operating procedures. On September 23, 2005, a turbidity spike was observed in the GWRP in the influent to the clearwell (see Figure 1-1) with a duration of 1.5 hours and > I NTU for 20 minutes (Dreher, 2006b). In a letter from ECO's plant operator to CDHS, it was noted that it was only the second time since plant operations began that colored water complaints were preceded by a turbidity spike. it was also noted that "post prior incidents have been related to distribution system issues." (Dreher, 2006b). TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-3 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Additional modifications to plant operations were made after this incident. The online turbidimeter on the RO bypass stream had been "active" only when the plant was in the backwash recovery process. After the incident, the RO bypass filter effluent turbidity alarm was set to remain active 24n and the plant's distribution pumps were set to be shutdown by this alarm. After the July 2005 incident, a procedure was put in place to waste the Fe/Mn solids sludge from the bottom of the washwater recovery tanks weekly. After the September 2005 colored water episode, the frequency of this process was increased to three times per week (MWF) (Dreher, 2006b). Evaluation of July and September 2005 Colored Water Episodes by MPI. The City retained MPI to identify corrective measures for water quality issues causing "customer complaints of red and brown water resulting from excessive levels of iron and manganese concentrations in the distribution system samples." MPI was also asked to evaluate potential areas of concern regarding the GWRP's ability to produce 4800 AFY (MPI, 2006). The MPI evaluation corroborated the observations made by ECO's plant operator (Dreher, 2006a&b) that high turbidities in the washwater recovery line contributed to the elevated turbidities in the July 2005 and September 2005 incidents of colored water. It was reported that the online turbidity analyzers for the RO bypass and blended RO permeate/R0 bypass water samples had limits of 10.0 and 1.0 NTU, respectively. In the July and September 2005 incidents, these limits were reached and actual turbidity values may be higher than those reported for these streams. MPI also reported that it is "highly unlikely that RO membrane operation resulted in the excessive turbidities observed in the City's distribution system (MPI, 2006), For the RO bypass treatment train, MPI recommended installation of an online turbidimeter on the washwater recycle line to the RO bypass filter to continuously measure turbidity and made several recommendations involving GWRP operations. They also noted that changes to plant operations that increase "the. particulate and solids loading to the filters, such as oxidizing and filtering the complete plant flow or operating the Backwash Recovery tanks in a less than optimal manner for solid separation may require construction of additional filters or washwater recovery tanks (MPI, 2006). In their evaluation, MPI also recommended that ECO consider modifications for RO pretreatment to remove iron and noted that ECO is considering adding a sodium hypochlorite feed to the entire plant flow (sand separator influent) to oxidize iron and remove it in the RO feed filters prior to the RO and avoid problems with membrane fouling. MPI also recommends that if this strategy is followed, there are several concerns that must be addressed (MPI, 2006): • The RO feed filters may not be adequately sized to handle the increased loading and additional filters may be needed • The RO feed filters will need to be backwashed more frequently, resulting in more wastewater to the washwater recovery tanks and possibly a need for additional tankage • The sodium hypochlorite may come in contact with the RO membranes and damage them so careftil evaluation of the sodium bisulfite feed system to avoid this potential problem is needed. • Manganese is not likely to be fully oxidized by the sodium hypochlorite, TRUSSELL TECHNOLOGIES, INC, PASADENA, CA PAGE 1-4 PROPOSAL TO PROVIDE ENSERING DESIGN SERVICES FOR THE TESTIV EVALUATION, AND REcomMENPATioNs RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO but it may be partially oxidized and could foul the RO Membranes. Based on the raw data in Attachment A of MPI (2006), Trussell Tech constructed a probability plot of average RO Feed conventional filter effluent compared to average RO Bypass greensand filter effluent for the period June through September 2005. As shown on Figure 1-2, the RO bypass greensand filter produces a lower effluent turbidity than the RO feed conventional filters. This suggests that a strategy to oxidize iron in the complete plant flow and increase the loading of the RO feed filters may indeed require the installation of additional RO Feed filters. 0.01 P&.�t Lo.. Ths. Or Eq.al T. Figure 1-2 — Comparison of Average Efflluent Turbidity for RO Feed Conventional Filters and RO Bypass Greensand Filters Based on Online Turbillimeter Data Collected at the GWRIP from June — September 2005. EVALUATION OF THE COLORED WATER PROBLEM AND POSSIBLE APPROACHES TO SOLUTION The Tasks as laid out in Exhibit A by MPI will probably resolve the colored water problem, but Trussell Tech believes that, if some modifications are made to this approach, the chances of success can be improved and the cost of the project can be reduced. Concepts Behind the Optional Approach, The following four tasks were laid out in Exhibit A: I . Task I — Sampling 2. Task 2 — Evaluation of Treatment Alternatives 3. Task 3 — Optimization of GX�W Processes 4. Task 4 — Optimization of Distribution System Operations Trussell Tech. would like to suggest modifications to Tasks I and 2. As it is currently specified Task I would collect daily samples at three points in the distribution and at the following locations at the treatment plant: a) the blended well water, b) the bypass water, c) the recycle water, and d) the product water. Optional Approach to Sampling. The optional approach would collect composite samples at the same locations daily. More intensive surveys would be conducted if a color incident occurs in the distribution system. Trussell Tech suggests that composite samplers be installed at the following locations - 1. Three locations in the distribution system 2. The blended well water (point "I" on Fig. 1-1) 3. The washwater recycle line (point "5" on Fig. 1-1) 4. The Bypass line (point "2" on Fig. 1-1) 5. The RO effluent (point "Y on Fig. 1-1) 6. The product water exiting the clearwell (point "4" on Fig. 1 -1). TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-5 0 E PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, FVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Five sample bottles will be purchased for each of the composite samplers, one for each day of the work week. Each day, the oldest composite sample will be thrown away at each site and the bottle reused. As a result, there will always be four earlier samples as well as the sample for the current day at each sample site. At the end of each week, an aliquot will be taken from the composite sample for each day and poured into one sample bottle for each site, provided by the laboratory - to create one overall composite sample for each sample site for the week. This approach provides a complete characterization of plant performance and of conditions in the distribution system, but it reduces the sample load by 90 percent. When an incident occurs and color complaints are made, the four previous samples will be analyzed as well as sample for the day of the incident as well as the samples for the following two days. As a result we will have sound data on the overall long-term conditions at all sample sites as well as a specific daily record before and after each incident. Equally important samples before and after the incident can be preserved for future analysis should questions arise. Optional Approach to Pilot Work. Trussell Tech also recommends that a decision to conduct the pilot work proposed in Task 2 be postponed until the completion of the oxidants analysis in Task 2, the optimization analysis in Task 3 as well as the first 4-6 months of the sampling program as well as preliminary work on Task 4. This will put the team in a strong position to judge the cause of the colored water problem, to understand the part of the plant that is not meeting the city's needs and if piloting is necessary to address the problem. Trussell Tech believes the decision to pilot preoxidants is premature at this time for the following reasons: 1) Piloting is expensive and should only be conducted if there are identifiable benefits. 2) The Chlorine-permanganate-greensand approach used on the bypass stream at the GWRP is accepted as the state of the art for the removal of iron and manganese and it is successfully used throughout the country. 3) There is a reasonable possibility that other problems at the GWRP are responsible for the color problem and it is not clear that an oxidants pilot study would resolve these. Examples are a) the possibility that the washwater recycle, while improved, is still interfering with performance and b) the possibility that the RO membranes in the GWRP, which have been cleaned many times an which are constructed with no brine seal, are contributing to the problem. 4) The use of an oxidant on whole flow may void RO membrane warranty. Boyle proposed greensand treatment for the whole flow during the original design but was forced to change to conventional filters before RO and avoid oxidants in order to gain the cooperation of the RO manufacturer. 5) There is very limited or no turbidity data for the RO permeate and the washwater recovery streams and very limited iron and manganese data for any streams other than the raw water and product water. This data is essential for the analysis of possible treatment solutions. 6) Until the sampling, source tracking and flushing studies are completed it is not certain that improving oxidation at the GWRP is the most cost-effective means of solving the color problems. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-6 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Approach to Hydraulic Modeling. A hydraulic model, developed based on information extracted from the City's existing GIS shape files for the 250 pressure zone, will be the central too] for the source tracing task. Hydraulic pathways from and to the 250 pressure zone will be considered to establish the boundary conditions and bypass modeling the entire City-wide system at this time. Sources of water at the locations of elevated iron and manganese occurrence within the distribution system will be determined. The intent of this task is to determine if the complaints are resulting from the operation of the treatment facility or due to operation of certain distribution system infrastructure, REFERENCES Bauman, Eric, 2007, Personal Communication. Boyle, 2004, Capistrano Well Water Quality Analysis, Report No. BK -C68-200-85. Dreher, Pierre, 2005a, Letter to Mr. Anthony Nhan, CDHS on July 2005 colored water incident. Dreher, Pierre, 2005b, Letter to Mr. Anthony Nhan, CDHS on September 2005 colored water incident. Dreher, Pierre, 2006, Personal Communication. Griffen, A., 1960, Significance and removal of Manganese in Water Supplies, J. A WWA, 52, 1326-1334. MPI, 2006, City of San Juan Capistrano Ground Water Recovery Plant (GWRP) Process Evaluation Memorandum, Final Draft, Jan. 24. Sly, L., et al., 1990, Deposition of Manganese in a Drinking Water Distribution System, AppL & Env. Micro., 56(3),628-639. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 1-7 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO PROJECT APPROACH AND SCOPE OF SERVICES The project approach and scope of services will build upon the logic laid out in the Project Understanding (Section 1). The scope will encompass execution of all the Tasks as laid out in Exhibit A of the RFP. In addition, an optional approach to Task I and Task 2 will be included that Trussell Tech believes will result in a determination of the cause of and the solution to the colored water episodes at a cheaper cost to the approach defined in the RFP. TASK 1 — SAMPLING OF THE RAW WATER, GWRP TREATED WATER AND AT THE DISTRIBUTION SYSTEM The purpose of Task I is to collect regular monitoring data from the raw water, from various locations in the GWRP, and from the distribution system to aid in determining the source, cause, and extent of the colored water problems. Table 2-1 shows the deliverables; for Task I broken down by sub -tasks. The scope of services for Task I will be described below for both the approach described in Exhibit I of the RFP and the optional approach recommended by Trussell Tech. Approach in the RFP. The scope of services for the approach laid out in the RFP is described below. As shown in Table 2-1, a sampling plan and database for storing sample data will be developed before sampling begins. In addition, operators will be briefed on the sampling plan so they will be prepared to take the samples. A local lab was contacted in preparation of the project budget so the seeds of developing a sample collection and preservation protocol have been planted. Table 2-1 List of Defiverables for Task I Overall sampline defiverables a) sampling schedule III sample collection and preservation protocol c) coordination of analysis of samples by local laboratory d) database development and updating as data described below is collected 1A - Daily SAMR111111 for 12 mos. at raw water header sumlyine GWRP (Grab or composite sampline) a) Iron (total, dissolved) b) Manganese (total. dissolved) 1B - Continuous recording turbidemeter data 1B - Dally saingles In treated water for 12 mos. with varyinar collection thutes (Grab or composite —sampline) a) Iron (total, dissolved) b) Manganese (total, dissolved)" IC — GWRP samp)[Im! when turbidity svikes or colored water cormulaints are received (a) Plan for intensive sampling in Plant (b) Plan to include 3 GWRP locations: RO permeatc� bypass filter effluent, waghwater recycle line (c) Samples to be analyzed for turbidity, iron (intal/dissolved), manganese (tutal, dissolved) 111 —Distribution system Prab sampffnp when turbidity spikes or colored water complaints are received (a) Plan for sampling locations based on travel time (b) Sampling locations: 3 in 250 pressure zone and I at 437N to 350S pressure zone ficed (c) Samples to be analyzed for turbidity, iron (intal/dissolved), manganese (total, dissolved) ID Alternate - Distribution "em comaosite samnlim when turbidity spikes or colored water convolabuts are received (a) Plan for sampling frequcricy/sampling location for a composite sampler in 250 pressure zone (b) Samples to be analyzed for turbidity, iron (tolul/dissolved), manganese (total, dissolved) Task I A Influent Water. As shown in Table 2- 1, grab samples for the influent water for the constituents shown in Table 2-1 will be collected daily (5d1wk) at varying times throughout the day over a 12 -mo. period. As an alternate approach, composite samples will be collected daily (5d/wk) over a 12 -mo. period. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-1 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SA14 JUAN CAPISTRANO Task I B GWRP Treated Water Sampling. As shown in Table 2-1, the GWRP treated water will be sampled for the constituents shown in Table 2-1. Samples will be collected daily (5d/wk) at varying times throughout the day over a 12 -mo. period. As an alternate approach, composite samples will be collected daily (5d/wk) over a 12 -mo. period. Task I C Additional Sampling when Turbidity Spikes or Colored Water is Reported. An intensive plan for sampling the Plant when turbidity spikes > 0.3 ntu or when colored water is reported will be developed. Based on past online turbidemeter data and on the historical record of color complaints, 20 such events were included in the project budget. The constituents to be sampled and the sample locations in the GWRP are shown in Table 2- 1. The preliminary plan, to be revisited before the sampling begins, is to have the operators sample at each sample location in the Plant four times per day for the day a color event is reported and also the following day for a total of eight samples. Task ID Distribution System Sampling when Turbidity Spikes or Colored Water is Reported. An intensive plan for sampling the distribution system when turbidity spikes > 0.3 ntu or when colored water is reported will be developed. Based on past online turbidemeter data and on the historical record of color complaints, 20 such events were included in the project budget. The constituents to be sampled and the protocol for sample locations in the distribution system, to be determined before sampling begins, are shown in Table 2-1. The preliminary plan, to be revisited before the sampling begins, is to have the operators sample at each sample location in the distribution system two times per day for the day a color event is reported and also the following day for a total of eight samples. As an alternate approach, a composite sampler will be placed in the distribution system at a location to be determined before sampling begins. The composite samples will be analyzed for the constituents shown in Table 2-1. The preliminary plan, to be revisited before sampling begins, calls for samples to be collected under the same procedure as for the distribution system grab sampling (2X/d for the day of and day following an event). Optional Approach Recommended by Trussell Tech. As discussed in the Project Understanding (Section 1), Trussell Tech recommends an optional approach to meet the objectives of the Task I Sampling at a cheaper cost to the sampling prescribed by the RFP. The optional approach would collect composite samples at the same locations daily. More intensive surveys would be conducted if a color incident in the distribution system. Trussetl Tech suggests that composite samplers be installed throughout the GWRP and in the distribution system (locations to be described in the sub -sections below). Sampling Protocol for the Optional Approach Recommended by Trussell Tech. The protocol for sampling is as follows. Five sample bottles will be purchased for each of the composite samplers, one for each day of the work week. Each day, the oldest composite sample will be thrown away at each site and the bottle reused. As a result, there will always be four earlier samples as well as the sample for the current day at each sample site. At the end of each week, an aliquot will be taken from the composite sample for each day and poured into one sample bottle for each site, provided by the laboratory - to create one overall composite sample for each sample site for the week. This approach TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-2 PROPOSAL To PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO provides a complete characterization of plant performance and of conditions in the distribution system, but it reduces the sample load by 90 percent. When an incident occurs and colored water is reported, the four previous samples will be analyzed as well as sample for the day of the incident as well as the samples for the following two days. As a result we will have sound data on the overall long-term conditions at all sample sites as well as a specific daily record before and after each incident. Equally important samples before and after the incident can be preserved for future analysis should questions arise. Based on the historical record, the fee proposal is based on six colored water incidents being reported during the one-year sampling program time frame. Task IA Influent Water. A composite sampler will be installed on the influent water stream and samples collected and analyzed as described above, Sampler [ocation: 1. The blended well water (point "I" on Section 1, Fig. I - 1) Task I B/I C GWRP Water Sampling. Composite samplers will be installed on the following locations in the GWRP: 2. Theblendedwell water (point'1" on Fig. 1-1) 3. The washwater rccycle line (point "Y' on Fig. 1-1) 4. The Bypass line (point "T' on Fig. 1-1) 5. The RO effluent (point "3" on Fig. 1 -1) 6. The product water exiting the clearwell (point "4" on Fig. I - 1). Samples will be collected according to the protocol described above, which includes the plan for regular sampling and analysis of the GWRP along with the sampling and additional analysis performed during events when colored water is reported. Task I D Distribution System Sampling when Turbidity Spikes or Colored Water is Reported. Composite samplers will be installed at the following locations. 7. Three locations in the distribution system, to be determined during preliminary planning. Samples will be collected and analyzed according to the protocol described above. TASK 2 — EVALUATION OF TREATMEN-1 ALTERNATIVES As stated in Exhibit I of the RFP, "this task wil I evaluate alternatives for treatment of colored water. Assuming that colored water is caused by the presence of iron and manganese in the water, oxidation followed by filtration is the most preferable solution. Treatment alternatives will be evaluated in this task assuming that GWRP operations will not be altered in response to an iron or manganese, spike in the raw water." An optional approach to this task is recommended by Trussell Tech in which the pilot study (Task 2.A.b) will not be conducted at this stage of the project for reasons discussed in the Project Understanding (Section 1). Approach in the RFP. The deliverables fbi Task 2 are summarized in Table 2-2. Table 2-2 List of Defiverables for Task 2 2A.& - Evaluation of Several Pre-treatment Alternafives includinu letter revort sunustarizinin a) evaluation of several alternative oxidants including fi-ce chlorine and chlorine dioxide b) desktop calculations and/or bencb-scalc testing to select a pre -oxidant for further consideration 2A.b - Pilot Study for Selected Pre -oxidant a) Development of pilot plan including costs it) octup, system and monitor and operate pilot I) pilot operations i!) sampling ii) analysis protocol b) Pilot test of at least 3 mos. c) Assessment Report 2A,c - Conceptual Desien and Layout for Selected Pre -oxidant 2B - Post-treatment Alternatives Evoluntlon Desktop evaluation of treatment train of oxidant -feed+filtrstion on GWRP treated water 2C - Conceptual Lp—el Cost Estimate Level 4 (-30%, +50%) cost estimates for: a) selected pre-treatment alternative I b) selected post-treatment alternative TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-3 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORE:O WATER FOR THE CITY OF SAN JUAN CAPISTRANO Each sub -task will be described below. Task 2A - Pre-tTeatment Alternatives Evaluation. This task will consider addition of an oxidant chemical to the blended well water to oxidize iron and/or manganese for subsequent removal in the GWRP by the RO bypass filters or the RO feedwater filters. Task 2A.a Desktop Study. As shown in Table 2-2, this sub -task will analyze several alternative pre -oxidants for the oxidation of iron and manganese including free chlorine and chlorine dioxide. The results will be summarized in a letter report selecting one pre -oxidant for further consideration in the project. Task 2A.b Pilot Study. The selected pre -oxidant from Task 2.A.a will be tested in a pilot study to demonstrate its applicability for iron and manganese removal. The pilot study will be performed for a period of 3 months and is to be conducted on a side -stream of blended well water prior to its entry to the GWRP. After addition of pre -oxidant to remove iron and manganese, the blended well water will be treated by a temporary greensand filter in the pilot study to remove precipitated iron and manganese. The fee proposal includes rental of a greensand filter, time for a Trussell Tech engineer to setup the pilot study and assist the operators in running the pilot experiment, and budget for laboratory analysis of iron and manganese (total and dissolved) in the feed and downstream of the greensand filter. The pilot study will run 24/7 as intermittent operation will introduce reactions that will not be present during full- scale operation and potentially compromise the results. The deliverables for Task 2.A.b are summarized in Table 2-2. Task 2A.c Conceptual Design and Layout. Varous Trussell Tech engineers have extensive experience with conceptual design and layout. In this sub -task a conceptual design and layout for the selected alternative oxidant will be performed. Task 2B Post-treatment Alternatives Evaluation. Another alternative approach to reduce iron and manganese levels entering the distribution system is to Post -treat the GWRP treated water with an oxidant feed followed by filtration. As shown in Table 2-2, the deliverable will be a desktop study of post- treatment alternatives. Task 2C - Conceptual Level Cost Estimation. As shown in Table 2-2, the deliverable is a Level 4 (-30%,+50%) cost estimate for the selected pre-treatment (from Task 2A) and post-treatment (from Task 213) alternatives. The Trussell Tech engineers participating in this project have broad experience with Level 4 cost estimates. Optional Approach Recommended by Trussell Tech. Trussell Tech recommends that a decision to conduct the pilot work proposed in Task 2 (Task 2A.b) be postponed until the completion of the oxidants analysis in Task 2, the optimization analysis in Task 3 as well as the first 4-6 months of the sampling program as well as preliminary work on Task 4. This will put the team in a strong position to judge the cause of the colored water problem, to understand the part of the plant that is not meeting the city's needs and if piloting is necessary to address the problem. Trussell Tech believes the decision to pilot preoxidants is premature at this time for the reasons stated in the Project Understanding (Section 1). As a part of the optional approach recommended by Trussell Tech discussed in Task 1, the fee proposal includes this strategy of not conducting the pilot study as a part of this project as an element of the optional approach. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-4 11 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO TASK 3 — OPTIMIZATION OF GWRP PROCESSES The purpose of Task 3 is to optimize the performance of the GWRP for better removal of iron and manganese. According to Exhibit I of the RFP, "the premise of this task is that a well operated system such as the one at GWRP should be capable of effectively removing iron and manganese from the well water, which is anticipated to be the source of colored water complaints." The deliverables for Task 3 are summarized in Table 2-3. TASK 4 — OPTIMIZATION OF DISTRIBUTION SYSTEM OPERATIONS Table 2-4 presents a list of deliverables for Task 4. Each sub -task will be described in detail below. Task 4A Evaluation of the 250 Zone Operational and Functional Conditions. The purpose of Task 4A is to assess water quality conditions in the 250 pressure zone because most of the colored water problems have been associated with the 250 pressure zone. There is a concern iron valves and other fixtures in the distribution system may be subject to corrosion and contributing to the colored water episodes. The 250 pressure zone also includes the older part of the City and there may be unlined iron pipe in the distribution system though the City has stated that the colored water reported by consumers is not typically associated with the older parts of the 250 pressure zone (Bauman, 2007). Water samples will be collected at the frequency, in the locations, and for the constituents described in Table 2-2 in order to assess the potential for corrosion contributing to the colored water episodes. Trussell Tech engineers have a unique expertise in this particular area, Table 2-3 List of Deliverables for Task 3 Optimization of existing processes In GW" (Ho*W to occurrence of colored water In GWRP effluent and better removal of iron and maneanese) R) recommendations of best operational practices for existing GWRP facility b) estimate of operational changes for optimized operation I c) cost estimate for such operation Table 24 List of Defiverables for Task 4 4A - Evaluation of the 250 Zone Operational and Functional Conditions Study to assess conditions in 250 pressure zone and potential for corrosion of iron valves and other atures in distribution system pipeline. a) sampling protocol b) water samples from at least 3 locations once per month c) samples measured for WQPs including TDS, PH, total alludinity, calcium, chloride, sulfate. d) calculate LSI based on data collected in this sub - task 4H — Source Tracin Hydraulic modeling including: a) Develop hydraulic model using City's misting GIS shape files b) Run BPS to determine water age primarily focusing on locations in the 250 pressure zone ?) Determine sources of water at locations of elevated iron or manganese occurrence d) Identify if issues with color complaints are from opennion of treatment facility or due In operation of certain distribution system infrastructure. 4C —Evaluation of Flushing Prourain a) Evaluation of the City's exMng flushing program b) identification of opportunities to improve delivery of fresh water at various locations in the distribution system TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-5 0 0 PROPOSAL TO PROV113E ENGINEERING DESIGN SERVICES FOR THE TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Task 4B - Source Tracing. Task 4B will be divided into six sub -tasks discussed below. Task 4B I Meetings, Data Collection, and Task Management. This task includes project meetings, data collection, task management, meeting agendas, and monthly progress reports. Task 4132 Seasonal Demand Analysis and Geocoding from Water Billing Records. Monthly City-wide production records for the past 5 years will be evaluated to determine the seasonal demand variations within the City. The objective is to identify the maximum day demands, typical average day demands, and the low winter demand periods. Water age tends to be a factor during the low demand periods. In this task, water demand peaking factors will be recommended. The billing records will be normalized and geocoded to the model junction nodes within the 250 pressure zones This methodology provides a more accurate distribution of demands for modeling purposes. Though this task will focus on the pressure zone 250, this same methodology can be used by the City to complete the assembly of the entire distribution system, following the completion of this project. Task 4133 Hydraulic Model Development from GIS and from Input/Output Location Information. The City has invested in a GIS that includes the water distribution system and its appurtenances. The 250 pressure zone includes approximately 15,000 pipes, 5,300 valves, and 1,700 hydrants. The GIS shapefiles will be exported to the hydraulic model. The project team is equally competent with commercially available hydraulic models including MWHSoft H20NET, H20MAP Water, and Infowater, as well as Bentley's WaterGEMS. It is our understanding that City staff currently own an H20MAP water license. Since the hydraulic engine contained in these software packages are identical, our team proposes to perform the analysis using a software most preferred by City staff. A long term City goal may be to build on the 250 pressure zone model and assemble a City-wide model that will be maintained by City staff. During the kickoff meeting we will discuss the benefits of using H20MAP Water, currently owned by the City, versus Infowater which runs inside ArcMAP. Since the 250 pressure zones is interconnected to other pressure zones, the boundary conditions consisting of water flowing into and out of this zone, are exceptionally important. Historical and seasonal operational data for water entering and leaving this zone will be collected from the SCADA system. The intent is to simulate realistic boundary conditions for the demand scenarios that will be used for the source tracing task. Task 4B4 Hydraulic Model Calibration to SCADA and optional Pressure Monitors. Calibration provides a measure of confidence in the model simulated results. SCADA data will be used to calibrate the boundary conditions, including the operations of pump stations and storage reservoirs influencing this pressure zone. Calibration within the distribution system of the 250 pressure zone is an optional, though desired task. This task involves installing up to 6 pressure loggers at critical locations within the distribution system and monitoring pressures for a period of one week. This task assumes the pressure loggers, if available, will be installed by the City's operation staff. The model will be calibrated for the extended period simulation, using the data available from SCADA and the optional pressure loggers. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-6 0 0 PROPOSAL TO PROVIDE ENGINEERING DESIGN SERVICES FOR THE: TESTING, EVALUATION, AND RECOMMENDATIONS RELATING TO COLORED WATER FOR THE CITY OF SAN JUAN CAPISTRANO Task 4135 Source Tracing. In this task, the model will be used for the source tracing simulations. Water age through the distribution system will be mapped for average day demand, maximum day demand, and minimum winter day demand. The model will be used to monitor the area of influence from each source entering the 250 pressure zone and from the storage reservoirs. The focus of the analysis will be the areas of elevated iron or manganese occurrences within the distribution system. The preliminary analysis results will be presented to City staff for discussions and for evaluating further analysis scenarios. The team feedback will be used to model the final scenarios, draw conclusions, and develop recommendations. Task 4136 Technical Memorandum. A technical memorandum will document the hydraulic model development, calibration, and modeling. Task 4C - Evaluation of Flushing Program. The team will evaluate the existing flushing program utilized by the City. The hydraulic model will be used to assist the project team in evaluating opportunities for improving delivery of fresh water at various distribution system locations. Various possibilities will be considered including unidirectional flushing. OPTIONAL TASK A — FINAL REPORT The scope and deliverables discussed above include all those prescribed by the RFP. An Optional Task A (OT -A) is included in the Fee Proposal for a final report to present the results all four tasks simultaneously. TRUSSELL TECHNOLOGIES, INC. PASADENA, CA PAGE 2-7 0 City of San Juan Capistrano Colored Water Evaluation Trussell Technologies Inc. Fee Proposal - Cost Summary Task Base Budget Base with Alternates Budget TT Recom- mended Budget Task 1: Sampling of the Raw Water, GWRP Treated Water and at the Distribution System 62,098 63,617 44,173 • Influent Water $11,192 NA NA • (Alternate) Influent Water Composite Sampler NA $12,385 $7,808 B (a) Finished Water Turbidity $2,210 $2,210 $2,210 B (b) Inorganic Water Quality Parameters $11,192 NA NA B (b) Alternate Inorganic Water Quality Parameters, Composite Sampler NA $12,395 $19,629* C Turbidity Spike Monitoring $21,472 $21,472 NA* D Distribution System Sampling $16,032 NA NA D Distribution System Sampling Composite Sampler NA $15,165 $15,526 Task 2: Evaluation of Treatment Alternatives $144,879 $144,879 $64,368 A (a) Pre-treatment Alternatives Evaluation $11,880 $11,880 $11,880 A (b) Pilot Test. $80,511 $80,511 $0 A (c) Conceptual Layout $12,608 $12,608 $12,608 B Post-treatment Alternatives Evaluation $11,880 $11,880 $11,880 C Pre-treatment and Post-treatment Alternatives Conceptual Level Cost Estimation $28,000 $28,000 $28,000 Task 3: Optimization of GWRP Processes $14,944 1 $14,944 $14,944 Task 4: Optimization of Distribution System Operations $76,454 $76,454 $76,454 A 250S Zone Functional Conditions $12,532 $12,532 $12,532 B 250S Modeling / Source Tracing $52,199 $52,199 $52,199 B 250S Evaluation of Flushing Programs $11,723 $11,723 TOTAL $298,375 $299,894 $199,939 *Budget for TT Recommended approach to turbidity spike/colored water episodes included in B(b) Alternate inorganic Water Quality Parameters, Composite Sampler EXHIBIT "B" 32400 PASEO ADELANTO IT MEMBERS OF THE CITY COUNCIL SAN JUAN CAPISTRANO, CA 92675 SAM ALLEVATO (949) 493-1171 01 PIO all 0 7HOMAS W. HRISAR (949) 493-1053 FAx [STRB ISNED 1961 MARK NIELSEN www.sanjuancapiL�trano.org 17 6 JOE SOTO DR LONDRES USO 0 NOTIFICATION OF MEETING OF POTENTIAL INTEREST OF THE SAN JUAN CAPISTRANO CITY COUNCIL The City Council of San Juan Capistrano will meet at 7:00 p.m. on Tuesday, October 2, 2007 in the City Council Chamber in City Hall, to consider: "Consideration of Agreement for Colored Water Study and Appropriation of Funds (Trussell Technologies Inc.)" — Item No. G2a. If you have specific thoughts or concerns regarding this item, you are encouraged to participate in this decision making process. You can communicate with the City Council through correspondence addressed to the Council and/or by attending the meeting and speaking to the Council during the public meeting. Correspondence related to this item must be received at the City Clerk's office by 5:00 p.m. on Monday, October 1, 2007 to allow time for the Council to consider its content. If you would like to speak at the meeting, please complete a yellow "Request to Speak" form found inside the entrance to the Council Chamber. This form is turned in at the staff table, just in front of the Council dais. You will be called to speak by the Mayor when the item is considered. You have received this notice at the request of the City staff member Eric Bauman, Water Engineering Manager. You may contact that staff member at (949) 487-4312 with any questions. The agenda, including agenda reports, is available to you on our web site: www.san'uancapistrano.or-g. If you would like to subscribe to receive a notice when agendas are posted to the web site, please make that request by sending an e-mail to: cityclerk(a)saneuancapistrano.org. Meg Monahan, MMC City Clerk cc: Malcolm Pirnie, Inc; Trussell Technology, Inc.; Eric Bauman, Water Engineering Manager * Received staff report San Juan Capistrano: Preserving the Past to Enhance the Future Printed on 100% recypied paper 32400 PASEO ADELANTO SAN JUAN CAPISTRANO, CA 92675 (949) 493-1171 (949) 493-1053 FAx www sanjuancapistrano. org October 3, 2007 0 ESTR I LISH ID 1961 1 76 NOTIFICATION OF ACTION BY THE CITY COUNCIL OF SAN JUAN CAPISTRANO MEMBERS OF THE CITY COUNCIL SAM ALLEVATO THOMAS W. HRIBAR MARK NIELSEN JOE SOTO DR LONDRES USO On October 2, 2007, the City Council of San Juan Capistrano met regarding: "Consideration of Agreement for Colored Water Study and Appropriation of Funds (Trussell Technologies Inc.)" Item No. G2a. The following action was taken at the meeting: Personal services agreement for testing and evaluation of the causes of colored water in the water distribution system, in the amount of $199,939.00 approved If you have any questions regarding this action, please contact Eric Bauman, Water Engineering Manager at (949) 487-4312 for more detailed information. Thank you, Meg,'Mona an, MMC CiCv C I Cc: Malcolm Pirnie, Inc; Trussell Technology, Inc.; Eric Bauman, Water Engineering Manager San Juan Capistrano.- Preserving the Past to Enhance the Future Q* P,,,t� �, 100%,�,d�d pa,.,