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Home My WebLink AboutAGENDA BACKUP 07-16-98 ~. Central Contra Costa Sanitary District BOARD OF DIRECTORS Page 1 of 5 DATE July 2, 1998 SUBJECT BOARD MEETING OF NO. 3. CONSENT CALENDAR b. July 16, 1998 TYPE OF ACTION ACCEPT ANNEXATION FOR PROCESSING AUTHORIZATION FOR P.A. 98-8 (DANVILLE), 98-9 (ALAMO), AND 98-10 (MARTINEZ) TO BE INCLUDED IN A FUTURE FORMAL ANNEXATION TO THE DISTRICT SUBMrrTED BY Dennis Hall, Associate Engineer Parcel No. Area 98-8 Danville (78D6& 7) 98-9 Alamo (77E5) 98-10 Martinez (10A7) INITIATING DEPARTMENTIDIVISION r DH U :\PPr\Kast\Annx98-8.dh. wpd INITIATING DEPT/DIV Engineering Department/Environmental Services Owner/Address Parcel No. & Acreage Lucille Weber 333 Hill Road Danville, CA 94526 APN: 196-310-001 (15.0 Ac.) Remarks Existing house with a failing septic system; must connect to the public sewer system. Project is exempt from CEOA. Mitchell & Anne Struthers 130 South Avenue Alamo, CA 94507 APN: 198-063-014 (0.44 Ac.) Existing house with a failing septic system; must connect to the public sewer system. Project is exempt from CEOA. William G. Ainsworth, Jr., etux 4555 Alhambra Way Martinez, CA 94553 APN: 162-202-004 (0.564 Ac.) All of the parcels within this annexation have houses on them. One of the parcels (162- 230-003) is presently connected to the public sewer. The remainder of the parcels are on septic systems which are in poor shape or are failing. The petitioners are interested in forming a Contractual Assessment District to finance an William R. Sharkey III, etux 4551 Alhambra Way Martinez, CA 94553 APN: 162-202-005 (0.653 Ac.) Ruth Jamison 4531 Alhambra Way Martinez, CA 94553 APN: 162-202-006 (0.37 Ac.) Lead Agency CCCSD CCCSD CCCSD jI/J! JSM DATE July 2, 1998 Page 2 of 5 SUBJECT AUTHORIZATION FOR P.A. 98-8 (DANVILLE), 98-9 (ALAMO), AND 98-10 (MARTINEZ) TO BE INCLUDED IN A FUTURE FORMAL ANNEXATION TO THE DISTRICT Parcel No. Area Owner/Address Parcel No. & Acreage Brian C. Francios, etux 4561 Alhambra Way Martinez, CA 94553 APN: 162-230-001 (0.24 Ac.) Remarks Lead Agency extension of the public sewer to serve their homes. Brent A. Alexander, etux 4571 Alhambra Way Martinez, CA 94553 APN: 162-230-002 (0.24 Ac.) Project is exempt from CECA. Roy L. Gage, etux 4581 Alhambra Way Martinez, CA 94553 APN: 162-230-003 (0.25 Ac.) Mark A. Pendleton, etux 4510 Alhambra Way Martinez, CA 94553 APN: 162-242-014 (0.516 Ac.) Blair C. Gast 4530 Alhambra Way Martinez, CA 94553 APN: 162-242-015 (0.302 Ac.) Ellis Branchcomb, etux 4540 Alhambra Way Martinez, CA 94553 APN: 162-242-016 (0.508 Ac.) Wayne Ruga 4550 Alhambra Way Martinez, CA 94553 APN: 162-242-017 (0.23 Ac.) Rozella M. Zeppa 4570 Alhambra Way Martinez, CA 94553 APN: 162-242-031 (0.446 Ac.) RECOMMENDATION: Authorize P.A. 98-8, 98-9, and 98-10 to be included in a future formal annexation. U :\PPr\Kast\Annx98-8.dh. wpd Page 3 of 5 @ II) I I r , R PROPOSED ANNEXATION P.A.98-8 --,.--.----~-.-..-,----.--.,-,-----~,----..... ....--_._-,_._-,.,...__...,-,-,,-_.._.._....--~."_.__._-~. -."-.-----....---.---.,.-.-,----___.0__....----........--__.,"__________.____..____.._.. \ Page 4 of 5 ,eo. PROPOSED ANNEXATION P.A. 98-9 "" ~,,1;- s\l (j.l~~ tIIO' c~ , I. I~ t,_~,~0N Page 5 of 5 ----~'~,,! ~ N , ., .... t, c't ((\ PROPOSED ANNEXATION P.A.98-10 ~. Central Contra Costa Sanitary District BOARD OF DIRECTORS Page 1 of 5 NO. 3. CONSENT CALENDAR c. TYPE OF ACllON INFORMATIONAL ....ECT ADVISE THE BOARD OF THE CLOSE OUT OF 4 CAPITAL IMPROVEMENT PROJECTS SUIIMlTTB) BY John J. Mercll'io, Management Analyst INlTlATlNG DEPTIDIV Engineering/PIanning ISSUE: Work has been completed on 4 capital improvement projects. When projects have been completed it is our practice to report financial results to the Board prior to closing the projects' accounts. BACKGROUND: The 4 capital improvement projects listed on Attachment 1 have been completed, and staff is closing out the projects accounts. A summary of the total authorized budgets and expenditures for the projects to be closed is presented by program in the following table: Authorized UndelNl ram Bud et Expenditures (Overruns) Treatment Plant $1,157,000 $1,150,739 $ 6,261 Collection System 25,000 20,566 4,434 General Improvements 162,000 159,356 2,644 Totals $1,344,000 $1,330,661 $13,339 The total authorized budget for the 4 projects is $1,344,000. Total project expenditures are $1,330,661. A net underrun of $13,339 (1 % of the total authorized budgets) will result in $6,261 being returned to the Treatment Plant Program, $4,434 being returned to the Collection System Program, and $2,644 being returned to the General Improvements Program. A description of each project follows on Attachment 2. RECOMMENDATION: This item is presented to the Board of Directors for information only. No action is necessary . INITIATING EPARTMENTIDlVlSlON r /11/ jv I HIEF ENGINEER JSM JAl Page 2 of 5 ATTACHMENT 1 TREATMENT PLANT PROGRAM CAPITAL PROJECTS TO BE CLOSED OUT DISTRICT PROJECT TITLE AUTHORIZED EXPENDITURES UNDERRUN PROJECT BUDGET (OVERRUN) NO. 6084 Harmonics and Power $180,000 $174,729 $5,271 Coordination 7132 Aeration Basin Selector 977,000 976,010 990 Program Totals $1,157,000 $1,150,739 $6,261 ---,-------,--~_._........-_._-~-,._._----~'------_._.---,~-~-------,----------_.__..- ~-~----_._.__.,_.,~-" Page 3 of 5 ATTACHMENT 1 (CONTINUED) COLLECTION SYSTEM AND GENERAL IMPROVEMENTS PROGRAMS CAPITAL PROJECTS TO BE CLOSED OUT DISTRICT PROJECT TITLE AUTHORIZED UNDERRUN PROJECT BUDGET EXPENDITURES (OVERRUN) NO. 4859 A-line Internal InsDection $25,000 $20,566 $4,434 CoHection System Project Totals $25.000 $20.566 $4,434 8163 I HOB Imorovements $162,000 $159,356 $ 2,644 Generallmorovements Project Totals $162,000 $159.356 $ 2,644 __,__~___.~____........_______""u..m___"_____'_~"'__'_'.,,__,_._____.._~._..~_...~,___.__.~"_..____.~____..~._--.---.----,~..-_.- ~---...,.--....,._.----.-.,---.-.-.-..-----.-.. Page 4 of 5 ATTACHMENT 2 TREATMENT PLANT PROGRAM CAPITAL PROJECTS TO BE CLOSED OUT · The Harmonics and Power Coordination project, DP 6084, performed a short circuit analysis, harmonic analysis, and power coordination study on the existing treatment plant electrical grid in 1991. This information provided the baseline condition and requisite design parameters for the four pending major design efforts, which included the Headworks Facility, Standby Power Facility, Cogeneration, and UV Disinfection. These facilities are now successfully in operation with no negative impacts on the treatment plant electrical system. An update of the analyses was scheduled to be performed as part of this project but has been included in the electrical improvements portion of the Treatment Plant Seismic Upgrade project. · The Aeration Basin Selector project, DP 7132, modified the piping and valves in the return activated sludge (RAS) force mains so that RAS would discharge into the primary effluent channel adjacent to the aeration basins. This established a new environment for the mixing of the wastewater and biota which consumes it. The channel in which this environment was established is called a "selector", because it selectively creates an environment favoring growth of microorganisms with special attributes. Key among those attributes is good clarification, settling, and compaction characteristics. Two key benefits have resulted from this project: · The capacity of the secondary clarifiers has increased as a result of the enhanced settling properties of the activated sludge, thereby delaying construction of additional secondary clarifiers, and · The need for chlorination of the RAS to control filamentous organisms in the activated sludge has been eliminated along with the high costs of providing this chlorine in the liquid form which is presently being used. H:\OATA\POSPAPER\0716attch298.wpd Page 5 of 5 ATTACHMENT 2 (CONTINUED) COLLECTION SYSTEM AND GENERAL IMPROVEMENTS PROGRAMS CAPITAL PROJECTS TO BE CLOSED OUT · The A-Line Internal Inspection project, DP 4859, entailed constructing an additional manhole on the existing A-Une to facilitate internal inspection of potential corrosion damage as a result of the Concord Pump Station discharge. The inspection revealed moderate corrosion. Operational changes have been implemented at the pump station which has reduced the amount of Hydrogen Sulfide present in the A-Line. · The HOB Improvements project, DP 8163, repainted the outside of HOB, replaced the landscape lighting with energy efficient and corrosive-resistant fixtures, reconfigured Accounting, Purchasing, MIS staff area, and the Reprographics Service Center using modular space efficient work station panels and furniture. H:\DA T A \POSPAPER\0716attch298. wpd ~ Central Contra Costa Sanitary District BOARD OF DIRECTORS !!:!!!!!!!!!!!IIII'IIIIII!!!:!!ll.lillii!:!!!!!!!:!!!:i!!i!!:!!: BOARD MEETING OF mf~j!j!jj::::~~mmt::::::::::~~~:::::::::::t:tj:::::jj\{:::::::::(i::::{::::::jjjf:d~?t:t~~~::::i::l@t::::::::;:;:;:;:;:!i!i;:;:)tjjjjjijjjjjjjjfjj Page 1 of 1 DATE NO. 3. CONSENT CALENDAR d. TYPE OF ACTION July 9, 1998 SET HEARING DATE SUBJECT ESTABLISH AUGUST 6, 1998, AS THE DATE FOR A PUBLIC HEARING TO RECEIVE COMMENTS ON A PROPOSED SCHEDULE OF HAZARDOUS WASTE HANDUNG AND DISPOSAL CHARGES FOR CATEGORICALLY EXEMPT SMALL QUANTITY GENERATORS SUBMITTED BY Jarred Miyamoto-Mills, Principal Engineer INITIATING DEPT tOlV Engineer/Environmental Services ISSUE: The District Code requires that the Board of Directors conduct a public hearing before considering the adoption of fees or charges for services. BACKGROUND: The Household Hazardous Waste Collection Facility (HHWCF) was established to collect and dispose of hazardous waste from both residential customers, and nonresidential categorically exempt small quantity generators. The cost for HHWCF operation and waste disposal for residential customers is paid for through annual Sewer Service Charges, and agreements with the cities of Concord, San Ramon and Clayton, and the Mountain View Sanitary District. Categorically exempt small quantity generators are to pay the incremental cost of waste disposal directly through the application of charges for service. Staff has developed a proposed Schedule of Charges for categorically exempt small quantity generators. Prior to the Board's consideration of the proposed charges, it is appropriate to conduct a public hearing to receive comments from interested individuals; a staff presentation will be made at that time. This public hearing has been tentatively scheduled for the regular meeting of the Board on August 6, 1998. Appropriate notices will be posted and published in the Contra Costa Times. RECOMMENDATION: Establish August 6, 1998, as the date for a public hearing to receive comments on the proposed Schedule of Hazardous Waste Handling and Disposal Charges for Categorically Exempt Small Quantity Generators. INITIATING DEPARTMENTtOlVlSlON JMM U:\PPr\0716CEsa,WPD 4/8/98 .~-------_...-...."-'_..._._-'-_._--------_..~-------~~--"-"---~-------_._-~,-----~------_._-,....~.,..._- ~ Central Contra Costa Sanitary District BOARD OF DIRECTORS IIIIIIIII!:::::::::::::::::::::;:::::::;:::::::I.IIIII111111111111.1'1111111 BOARD MEETIj~~; 16, 1998 Page 1 of 1 NO. 3. CONSENT CALENDAR e July 9, 1998 TYPE OF ACTION ACCEPT CONTRACT/AUTHORIZE NOTICE OF COMPLETION/CLOSE PROJECT DATE SUBJECT ACCEPT CONTRACT WORK FOR CONSTRUCTION OF THE PRIMARY BUILDING REMODEL, DISTRICT PROJECT 6095, AND AUTHORIZE FILING OF THE NOTICE OF COMPLETION SUBMITTED BY David J. Reindl, Associate Engineer INITIATING DEPTIDIV Plant Operations/Maintenance Engineering ISSUE: Construction has been completed on the Primary Operations Building Remodel, District Project 6095, and the work is now ready for acceptance. BACKGROUND: The remodel project that renovated the three structures that make up the existing Primary Building was awarded to N. E. Carlson Construction Company in July 1997. After removing the old influent pumps, main engines, and the carport structure and demolishing interior walls and partitions, construction of the new Maintenance and Reliability Center has been completed. New construction included the conversion of existing space into shop areas for Instrument and Electrical Shops and provided additional space for employee lockers and day room, as well as new Maintenance offices and safety-related facilities. Structural improvements were also made throughout the building to improve the building's performance in a seismic event. The project description can be found in the fiscal year 1997-98 Capital Improvement Budget (CIS) on pages TP-40 through TP-41. The Board of Directors authorized the award of a construction contract for this work in the amount of $1,900,585 to N. E. Carlson Construction Company on July 11, 1997. The contractor was issued a Notice to Proceed on August 20, 1997, and the District took beneficial use on May 13, 1998, with all work completed at this time, except for minor punch list items. It is appropriate to accept the contract work at this time. The total authorized budget for this project is $2,564,000. An accounting of this project will be provided to the Board of Directors at the time of close out. RECOMMENDATION: Accept contract work for construction of the Primary Building Remodel, District Project 6095, and authorize filing of the Notice of Completion. JM< -- Jt-t/L- 5:\BI05\ 1998\6095\PosPprforCompln. wpds:\Bids\ 1998\6095\PosPprforCompln ~ Central Contra Costa Sanitary District BOARD OF DIRECTORS ::~:~::I':':':':'::::.:::':':':':::::S::':':':':::::I':':m':':':':':':'I:.::.:::.:.:.:.::tR:':'::r:'::~:rll:':':':':':::.::;=-:':-:::::':':':':':::::1':':':':':':'11:':':.:.:.:::::{{{:: ..... .- .......... . .... .. .. .. .. . .... ... ........ :::::: ...... :::::::", .....: :::: :::: ::::::. : ::::::: .... .::. ::: ..... ....: .... .':::::::::::::::: ... . ..... ." .. .... ... . . . . .......... .....- ...... ....... ..... .... ..... ..... . ....... ...... " ...... .........", .................. ...... ........... . .... ..... . . ." ....... ........ .. . ..-...... .... .... ................ ~~r::::~~~~~r~~:::::::::::t::::::::::~~:::t\::~~\}:::::::::::f:::f::::::~~r::::t~t::::~r~~:::::::r~r~:::::::::::::::::~~~~~:::::tr~rt Page 1 of 1 July 8, 1998 NO. July 16, 1998 3. CONSENT CALENDAR f. DATE TYPE OF ACTION ACCEPT CONTRACT/AUTHORIZE NOTICE OF COMPLETION SUBJECT ACCEPT CONTRACT WORK FOR M6 FORCE MAIN CATHODIC PROTECTION SYSTEM REHABIUTATlON PROJECT, DISTRICT PROJECT 6117, AND AUTHORIZE THE FlUNG OF THE NOTICE OF COMPLETION SUBMITTED BY James L. Belcher, Senior Engineer INITlA TlNG DEFT IDIV Plant Operations/Maintenance Engineering ISSUE: Construction has been completed on the M6 Force Main Cathodic Protection System Rehabilitation Project, District Project 611 7, and the work is now ready for acceptance. BACKGROUND: The M6 force main, which conveys wastewater from Martinez Pumping Station to Fairview Pumping Station, consists of two force mains. An impressed current cathodic protection system was installed in 1984 and has been protecting the two force mains since that time. The cathodic protection system utilizes deep well anodes to supply protective current to the two-mile long force mains. Testing of the protective system indicated that the deep well anode had reached the end of its useful life. This project replaced the existing deep well anode and added an additional deep well anode and rectifier. The project description can be found in the fiscal year 1997-98 Capital Improvement Budget (CIB) on pages TP-40 through TP-41 . The Board of Directors authorized the award of a construction contract for this work in the amount of $67,898 to American Construction on March 5, 1998. The contractor was issued a Notice to Proceed, which was effective April 20, 1998, with a required contract completion date of June 19, 1998. The District took beneficial use on June 12, 1998, with all work being completed on June 18, 1998. It is appropriate to accept the contract work at this time. The total authorized budget for this project is $104,400. An accounting of this project will be provided to the Board of Directors at close out. RECOMMENDATION: Accept contract work for construction of the M6 Force Main Cathodic Protection System Rehabilitation Project, District Project 6117, and authorize the filing of the Notice of Completion. 4/8/98 ~ Central Contra Costa Sanitary District BOARD OF DIRECTORS Page 1 of 3 JULY 16,1998 NO. 6. ENGINEERING a. BOARD MEETING OF DATE TYPE OF ACTION July 8, 1998 SET HEARING DATE SUBJECT ESTABLISH SEPTEMBER 3, 1998, AS THE DATE FOR A PUBLIC HEARING TO CONSIDER THE ESTABLISHMENT OF THE ALHAMBRA WAY CONTRACTUAL ASSESSMENT DISTRICT NO. 98-1 SUBMIlTED BY Curtis W. Swanson, Principal Engineer INITIATING DEPT/DIV Engineering Department/Environmental Services ISSUES: A public hearing is required to establish the Alhambra Way Contractual Assessment District No. 98-1 (C.A.D. No. 98-1). A public hearing is also required to create an assessment district pursuant to the procedure adopted under Proposition 218, which amended the California Constitution, Article XIII D, Section 4. BACKGROUND: On April 2, 1998, the Board of Directors adopted a resolution directing the preparation of a report for a demonstration project known as Alhambra Way C.A.D. No. 98-1. A draft report has been prepared and assessments are being estimated. It is now appropriate to schedule a public hearing to offer interested parties the opportunity to comment on the proposed assessments and related issues. A resolution has been prepared and is attached, which, if adopted, will set the date for the public hearing on September 3, 1998. Provisions of Proposition 218 require a minimum of 45 days between the sending of the notices of the hearing and the hearing itself. The resolution adopted on April 2, 1998, included a tentative date of July 2 for the hearing. Due to delays in completing project design and soliciting construction bids, the hearing date must be rescheduled for September 3. In conjunction with this item, staff will provide the Board an update regarding the latest developments related to sewering properties in the vicinity of Alhambra Way. RECOMMENDATION: Establish September 3, 1998, as the date for a public hearing regarding Alhambra Way C.A.D. No. 98-1 pursuant to California Constitution, Article XIII D, Section 4, and Streets and Highways Code, Sections 5898.20 and 5898.24. {l/I{ CWS JSM U :\PPr\Kast\ALHWYCAD. WPD Page Z of 3 RESOLUTION NO. 98- RESOLUTION SETTING HEARING OF PROTESTS ON DEMONSTRATION PROJECT KNOWN AS ALHAMBRA WAY CONTRACTUAL ASSESSMENT DISTRICT (C.A.D. NO. 98-1) WHEREAS, on April 2, 1998, this Board of Directors adopted Resolution 98-035 expressing the intent of the District to proceed with demonstration project for the purpose of installing sewer improvements known an the Alhambra Way Contractual Assessment District (C.A.D. 98-1). WHEREAS at the direction of this Board of Directors, Curtis W. Swanson, Principal Engineer in the Environmental Services Division, as Engineer of Work for improvement proceedings in Alhambra Way Contractual District (C.A.D. No. 98-1), Central Contra Costa Sanitary District, Contra Costa County, California, has prepared a report described in Section 5898.22 of the Streets and Highways Code (Municipal Improvement Act of 1911); and WHEREAS owners of each affected parcel will be provided written notice of the proposed assessment and ballot to indicate approval or opposition of the assessment pursuant to the procedures required by California Constitution Article XIII D Section 4, as amended by Proposition 218; NOW, THEREFORE, the Board of Directors of the Central Contra Costa Sanitary District resolves: 1. This Board sets 2 p.m. on September 3, 1998, at the Meeting Room of the Board of Directors, 5019 Imhoff Place, Martinez, California, as the time and place for hearing protests to the proposed improvements and the creation of the proposed Contractual Assessment District and assessment. U :\PPr\Kast\ALHWYCAD. WPD Page 3 of 3 2. The Secretary of the District is directed to publish, post, and mail the notices of improvement required by the Municipal Improvement Act of 1911, and to file an affidavit of compliance. The notice shall be published in the CONTRA COSTA TIMES not later than twenty (20) days before the date of the hearing. PASSED AND ADOPTED this 16th day of July, 1998, by the Board of Directors of the Central Contra Costa Sanitary District by the following votes: AYES: NOES: ABSENT: Members: Members: Members James A. Nejedly President of the Board of Directors, Central Contra Costa Sanitary District, County of Contra Costa, State of California COUNTERSIGNED: Joyce E. Murphy Secretary, Central Contra Costa Sanitary District, County of Contra Costa, State of California APPROVED AS TO FORM: Kenton L. Aim, District Counsel U :\PPr\Kast\ALHWYCAD. WPD .. _______..._...._.__...,..__~___._~__,~.__."..___.______~_.._____.'._...___..___~_____..._,,_w._____"___'_"___....."____.__.___,_...".~_ ~ -".--...-.--,.-------~-----. -'."-- ~ Central Contra Costa Sanitary District BOARD OF DIRECTORS ::}:if.iiSI::::':::::::~_:':':;:::':':::::':':::::::::;::::('I..:.::~t\t~B_::::::':':':::::::':':;::::::iHli:}}}} BOARD MEETING OF :~~rm_:":"'" t ~~~~ . ::::::' ,= ::. ~~~~~~~mf "::" ': ::::;:;:E:lStrrr J I 16 1998 ;:::::::::::::::::::::::::::::::::::::::::::::::;:::;;;:;:::::::::::::::::::::::::::::::::::::::::::::::::;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::;;;:;::::::::::: uy, Page 1 of 3 NO. 6. ENGINEERING b. DATE TYPE OF ACTION July 9, 1998 EXECUTE AGREEMENT SUBJECT AUTHORIZE THE GENERAL MANAGER-CHIEF ENGINEER TO EXECUTE AN AGREEMENT WITH CH2M- HILL FOR PROFESSIONAL ENGINEERING SERVICES IN CONNECTION WITH THE TREATMENT PLANT ODOR CONTROL EVALUATION, DISTRICT PROJECT 7185 SUBMITTED BY Randy Schmidt, Associate Engineer INITlATlNG DEPTIDIV Engineering Department/Capital Projects Division ISSUE: Board authorization is required for the General Manager-Chief Engineer to execute professional agreements for more than $50,000. BACKGROUND: The Treatment Plant Odor Control Facilities Plan, prepared by CH2M-HiII, was completed in March 1998. CH2M-HiII was selected out of four environmental engineering firms for the Odor Control Facilities Plan, using the District's standard consultant selection process. They completed the Odor Control Facilities Plan on time and on budget using new technology approaches. Computer "air dispersion" modeling, tracer validation, and selective process odor sampling were used to estimate odor impacts at off-site locations including the Household Hazardous Waste Facility, Highway 4, and the Mobil Home Park directly south of the treatment plant. The Treatment Plant Odor Control Facilities Plan drew major conclusions: . Plant influent, along with centrate addition from the Solids Conditioning Building, to the primary effluent channel are the largest remaining sources of odor at the Treatment Plant; . Hydrogen peroxide dosing of plant influent is the most cost-effective method to reduce plant influent odors during the hot summer months; . Alternatives for centrate odor control should be evaluated including hydrogen peroxide dosing, re- routing flows to headworks, or biological treatment; . Odor control at the Headworks, aerated grit tanks, and the Solids Conditioning Building could be enhanced by upgrading the chemical feed systems to the associated odor control scrubbers by re- balancing the foul air flows. RS WEB INITlATlNG DEPARlMENTIDIVISION ~) urrs L:\Position Papers\Schmidt\ 7185agree.wpd 4/8/98 -"._._---------'~--_._- ----.----.----------.------- DATE July 9, 1998 Page 2 of 3 SUBJECT AUTHORIZE THE GENERAL MANAGER-CHIEF ENGINEER TO EXECUTE AN AGREEMENT WITH CH2M-HILL FOR PROFESSIONAL ENGINEERING SERVICES IN CONNECTION WITH THE TREATMENT PLANT ODOR CONTROL EVALUATION, DISTRICT PROJECT 7185 The Plant Operations Department has already started upgrading certain chemical feed systems to the existing odor control scrubbers. Once completed, the foul air flows to each odor control scrubber will be balanced. Staff also recommends that CH2M-HiII be retained to assist the District with the following additional odor control tasks: . Determine the nature of the odors from the plant influent and design revisions to the plant influent hydrogen peroxide addition system; . Evaluate centrate odor control alternatives; . Evaluate the HV AC system in the Solids Conditioning Building; . Update the District's Odor Control Facilities Plan. The cost estimate for CH2M-HiII to complete all the above work is $250,000. Included as an attachment is a breakdown of those costs. RECOMMENDATION: Authorize the General Manager-Chief Engineer to execute an agreement with CH2M-HiII Consultants to assist in additional odor control work with an initial limit of $73,000 and an overall cost not to exceed $250,000. L:\Position Papers\Schmidt\7185agree.wpd 4/8/98 Page 3 of 3 ATTACHMENT 1 CH2M-HILL COST SUMMARY I. UPGRADE PLANT INFLUENT HYDROGEN PEROXIDE ADDITION - $73,000 CH2M-HILL shall use an interceptor model to predict odors in the District's interceptors, influent structure, and at the plant's Headworks. This model will require minimal sampling at these locations. It will show areas where corrosion could be expected and give an estimate of odor loading at the Headworks. CH2M-HILL will also design an appropriate analyzer system to meter hydrogen peroxide dosage into the raw influent, and will assist District Staff in the installation and start-up of this system. II. EVALUATE RE-ROUTE OF CENTRATE TO HEADWORKS - $80,000 CH2M-HILL will develop a detailed work plan, complete with schedule and budget, that identifies all the sampling and analytical activities, the responsible parties, the project deliverable, and the dates required for the centrate sampling events. CH2M-HiII will sample at five sites to determine the impact of re-routing centrate on plant liquid processes. Sampling and analytical procedure from the Odor Control Facilities Plan (OCFP) shall be used to determine a comparative analysis between emissions prior to and following centrate re-routing. III. EVALUATE SOLIDS CONDITIONING BUILDING HVAC SYSTEM - $50,000 CH2M-HILL shall perform an analysis of flow balancing, HV AC system operations, and operational strategies in the Solids Conditioning Building (SCB) and develop conceptual changes to limit the worker exposure to foul air and to odors within the SCB. Three major sources of odor are present in the SCB, the centrifuges, the scum thickener, and the incinerators. In addition, consideration will be given to the impact of the scrubber discharge on the building air system intakes. IV. UPDATE ODOR CONTROL FACILITIES PLAN - $47,000 CH2M-HILL shall prepare an update to the Odor Control Facilities Plan. The update will focus on those programs completed since March 1998. The OCFP update will feed information to the District's selected odor control programs and provide tools to address future odor control needs. L:\Position Papers\Schmidt\7185agree.wpd 4/8/98 ~ Central Contra Costa Sanitary District BOARD OF DIRECTORS !1111111:11111:1111111111l:11!1:"i'I:~~.:.!1 BOARD MEETIj~~; 16, 1998 Page 1 of 2 NO. 7. TREATMENT PLANT a. DATE TYPE OF ACTION July 9, 1998 AUTHORIZE AGREEMENT SUBJECT AUTHORIZE THE SIGNING OF A NATURAL GAS SALES AGREEMENT WITH CORAL ENERGY RESOURCES SUBMITTED BY James L. Belcher, Senior Engineer INITIATING DEPT tOlV Plant Operations/Maintenance Engineering JSSUf: Board of Directors' approval is requested for this Natural Gas Sales Agreement. BACKGROUND: The District uses natural gas (NG) as fuel for the treatment plant cogeneration system and as backup fuel to the landfill gas (LFG), which is used in the multiple-hearth furnaces (MHF) and the auxiliary steam boilers. Nearly 95 percent of the NG is used by cogeneration with the remaining five percent supplementing LFG use or providing space heating for the Plant Operations Department Administration area. The total projected FY 1998/99 usage of NG for the treatment plant and Administration area is just over 400,000 decatherms, or approximately $1,100,000 at $2.50 per decatherm, as identified in the 1998-99 Operations and Maintenance Budget. Prior to 1988, NG was purchased and transported by Pacific Gas and Electric (PG&E) under one tariff. The deregulation of the NG industry provided a mechanism for industrial consumers to contract directly with independent gas supply brokers. PG&E maintained ownership and control of the distribution pipelines supplying the end user. As the deregulated market evolved in the early 1990s, it became economical for the District to purchase brokered natural gas from an independent supplier. The natural gas market has developed to the point where natural gas is traded vigorously on the commodities market. Natural gas prices are quite volatile and unpredictable with large upward swings in the winter and price reductions in summer months. The District currently buys NG from Amoco on a month-to-month basis because month-to-month has been less expensive than a longer firm contract. The District sent requests for informal quotes in August 1997, and again in October, 1997. Eight brokers were contacted, and five returned proposals with fixed-price annual costs that were projected to be higher than if the District continued to purchase NG on a month-to-month basis. In May, the market softened, and in early June took a noticeable dip of over 10 cents per decatherm. Coral Energy Resources and Amoco continued to be interested in ROGER J. DOLAN S :\MAINTENG\ 1998\Belcher\AmocoPosPpr. wpd 4/8/98 ~.._._----------~---_.,.._-"--,---~---_._._' _._----~- DATE July 9, 1998 Page 2 of 2 SUBJECT AUTHORIZE THE SIGNING OF A NATURAL GAS SALES AGREEMENT WITH CORAL ENERGY RESOURCES supplying the District with natural gas. Coral Energy Resources and Amoco were petitioned for quotes; Coral was able to offer the lowest, fixed, one-year price at $2.4925 per decatherm, through June 30,1999, and month-tcrmonth thereafter at the index price. A fixed-price annual contract now is expected to obtain the lowest overall NG cost for the next year. RECOMMENDATION: Authorize the General Manager-Chief Engineer to enter into the Natural Gas Sales Agreement with Coral Energy Resources to supply natural gas at $2.4925 per decatherm starting July 1, 1998. 5 :\MAINTENG\ 1998\Belcher\AmocoPosPpr. wpd 4/8/98 "_._----~-"_..".__.._._.--_.,._.__.._--'------"~"-'--,...,.-.-.--------.-.-------.-----