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Home My WebLink AboutAGENDA REPORT 2004 0901 CC REG ITEM 09ATo. From: Date: SUBJECT: MOORPARK CITY COUNCIL AGENDA REPORT The Honorable City Council TTEM CIA • CITY OF MOORPARK, CALIFORNIA City Council Meeting of 9-/— ACTION: _ -- BY: � C Kenneth Gilbert, Director of Public Works August 13, 2004 (Council Meeting of 9 -1 -04) DISCUSSION Status Report on the Construction of the Calleguas' Las Posas Feeder No. 3 Waterline Project A. Overview Attached as Exhibit 1, is information provided by the Calleguas Municipal Water District [ "Calleguas "] regarding the construction of the subject water line project, as well as other components of the overall $200 million Aquifer Storage and Recovery {AFR) Project. B. Discussion A representative of Calleguas will be at the September 1 City Council meeting to give a presentation of the status of the project. Calleguas has provided staff with an anticipated schedule for the remainder of the project, based on information provided by their contractor, which is listed as follows: ...................... .. ................. ........................... . ....................... ..................... ............:.................. ................................................... .... ........... ....................... .._ ...... , Estimated Segment ;Start Date Completion Date 1. Butter Creek Road to Underway August 27 Mira Sol Drive ........................................ ......... ....... . a. 2. Bore pit west of ...... ... ...... ......... Underway ._........... ......... August 31 Tierra Rejada Road .................................................................................................................................................................................................................................................................... 3. Bore pit east of Underway ........................15._. .............................. ..... ....:..... ....... ... ......... . .......... ... ............ .......... September Tierra Rejada Road ........................................................................................................................................................................... 4. Tierra Rejada Road to ............................... N/A .............................. ..................... ..... ete....................................... ................__............. Complete Leta Yancy Road Calleguas Project_0409 000129 Calleguas Water Line Project September 1, 2004 Page 2 STAFF RECOMMENDATION Receive and file. Attachments: Exhibit l: Project Info from Calleguas Calleguas Project_0409 000130 ...... .............................................. ......... .......................... _........ .. ........ ............ .... Estimated Segment Start Date Completion Date 5. Leta Yancy Road to September 3 October 31 Moorpark Avenue ......................................................... 6. Bore pits east and August 22 ......... ........... .......... ......... October 31 west of Moorpark Avenue .................................................................................................................................................................................................................................................................... 7. Moorpark Avenue to ............................... Underway ...................................... ... ............... 2 7 ....... ............................... .....:....... ...:..... . September Spring Road ............................................................................................................................................................................................................................................................................ 8. Spring Road ............................... Underway ............. September 2 0 ............ ............................... STAFF RECOMMENDATION Receive and file. Attachments: Exhibit l: Project Info from Calleguas Calleguas Project_0409 000130 L2 QS-OS-I-P_CIE In an effort to improve water supply reliability for existing and future Ventura County water users, the Calleguas Municipal Water District is implementing the ''J r 0-, Las Posas Basin Aquifer Storage and Recovery Project. The project provides for long -term storage of drinking water imported from California's State Water Project. Ultimately, up to 300,000 acre feet of water, roughly a three year supply, will be stored in the Las Posas groundwater basin under the program. Together with other local supply projects, the Las Posas program promises to virtually drought -proof the Calleguas service area and ensure an adequate drinking water supply in the event of outages of state water facilities due to earthquakes or other emergencies. The project includes the construction of 26 groundwater wells and nearly 30 miles of pipeline to connect the wells to the District's existing distribution system. Development of the project has been underway since the late 1990s and will be complete by 2008. A key component of the project, the Las Posas Feeder pipeline, is currently under construction in the City of Moorpark along Los Angeles Avenue (State Highway 1 18) from Grimes Canyon Road to Spring Road. It is anticipated that installation of this pipeline will be completed by August 2004. Over the next few months, varying traffic lanes of Los Angeles Avenue may be closed to it vehicular traffic in active construction areas. Please review the overview map of the project site and Frequently Asked Questions section on the reverse side for more details. 000131L anuaAV sala5ub sot fiuoIa u0I.4:)nJ4su0:) auiladid Io a:)140N 09CL9 V0's4e0 puesnoyl'peoy ues10 ow Frequently Asked Questions • What is Calleguas Municipal Water District? - Calleguas is a public agency which provides water service to cities and other local water retail agencies within southern Ventura County including the City of Moorpark. • Why was LA Avenue chosen for the pipeline route? - Other pipeline alternatives, including a route paralleling the Arroyo Las Posas, were assessed by Calleguas during the initial planning phase of the project. The LA Avenue route was ultimately selected as the most cost effective and technically preferred alternative. • What is the project schedule? - Potholing activities necessary to identify the location of adjacent underground utility lines will likely begin along LA Avenue between Buttercreek Road and Spring Road by mid August 2003. These activities will occur over a period of 6 to 8 weeks. Actual pipeline construction is tentatively scheduled to begin in early November 2003 and conclude by August 2004. • What will be done to minimize traffic impacts? - For a majority of the pipeline alignment two east and west bound lanes along LA Avenue will remain open during construction. To maintain adequate traffic circulation at major intersections, tunneling methods as opposed to conventional open trenching will be used to install the pipeline. Tunneling will occur at both the Tierra Rejada Road and Moorpark Road intersections. Also, construction in the Spring Road intersection will be limited to weekends only. Additional tunneling will occur south of the arroyo under Spring Road. • Where can I rind more information? - Project updates will be available on Calleguas' web site at http: / /www. calleguas.com /lp.htm or by calling (805) 658 -0542. Project information will also be posted on Moorpark's government access cable television channel. 1* Las Posas Basin Aquifer Storage &Recovery Project A Joint Project of Calleguas Municipal Water District and Metropolitan Water District of Southern California How Imported Water is Delivered to the Region The Metropolitan Water District of Southern California (Metropolitan) supplies water to 26 cities and water dis- tricts serving about 17 million people in Los Angeles, Or- ange, San Diego, Riverside, San Bernardino, and Ventura counties. Calleguas Municipal Water District (Calleguas), a member agency of Metropolitan, is located at its northern boundary. Calleguas supplies water to 22 water agencies and cities serving about 550,000 people in southern Ventura County. Communities served include the cities of Oxnard, Cama- rillo, Thousand Oaks, Simi Valley, Moorpark, Port Hue- neme, and the unincorporated areas of Oak Park, Santa Rosa Valley, Bell Canyon, Lake Sherwood, Somis, Las Po- sas Estates, and Camarillo Heights. The entire potable water supply for Calleguas is surface wa- ter imported from the California State Water Project. The State Water Project conveys water from the mountains in Oxnard __ Part Hueneme Paint Mugu -- Caliegua northern California to southern California through a net- work of reservoirs, aqueducts, and pumping facilities. The surface water is treated at Metropolitan's Jensen Water Filtration Plant in Granada Hills to ensure that all federal and state water quality standards are met or surpassed. Following treatment, the water is conveyed to Calleguas via a pipeline thorough the San Fernando Valley and then a mile -long tunnel in the Santa Susana Mountains. Cal - leguas then conveys this water supply through 130 miles of large diameter pipelines to local water agencies for de- livery to water users. 00011133 Project Purpose Southern California experiences severe droughts and earth- quakes that can disable water supply systems throughout the region. The social and economic vitality of the region de- pends on a reliable water supply. The Las Posas Basin ASR Project provides this essential reliability. The project will store large volumes of imported water in the Lower Aquifer System of the Las Posas Groundwater Basin when supplies are plentiful, generally during the winter. This stored water will later be recovered (extracted) when im- ported supplies are reduced or unavailable, generally during summer peak demand periods, droughts, or emergencies. surface contamination by clay layers; and the 18 -mile long and 4.5 mile wide basin contains as much as 300,000 acre The Lower Aquifer System is optimal for groundwater stor- feet of available storage space. age. The lower aquifers are largely confined, protected from Project Overview square mile area northwest of Moorpark, At completion, project facilities will allow the delivery of wa- ter from the well fields through the conveyance system at a rate of 100 cubic feet per second (cfs). If the wells were op- erated continuously, they could extract 72,000 acre feet in a year. The facilities will also allow delivery of 70 cfs from the conveyance facilities to the groundwater basin for storage. At this rate, with year round injection, they could store 51,000 acre feet in a year. During injection operations, imported surface water from Metropolitan is conveyed through the Calleguas system pipe- lines to the wells The water is injected into the wells for stor- age in the groundwater aqui- fer. Injection operations typi- cally occur during winter months, when water demands are low and excess pipeline capacity and surplus water are available. During extraction operations, water is pumped from the wells for delivery to the Cal- leguas system. The project supplements imported supply during peak summer months when system demands are high. The project also pro- vides supply during routine maintenance outages and emergencies, when imported supplies are reduced or un- available. The project facilities include: • 26 ASR wells in three well fields within a nine • About 30 miles of large diameter (60 to 72 inch) pipeline feeders to connect the wells to the existing Calleguas pipeline system, • A reservoir and treatment facilities at the well fields, • A combined pump station and pressure reducing facility in the City of Moorpark to deliver water to and from the wells, and • A reservoir and expansion of an existing pump station at Calleguas' Conejo facilities in Thousand Oaks. 'eb i C fl. vi a k ;v i f e.rar 4c Pcxa aada. 91G. 9 _ ,� �"`' �sss F » ®�sr, ?�� 3 .• _.'�9,.... � Rag2 � MxvA�ark E�l ,M1 •� $il59NGif �.11ila�VA� ;�i3nFfa: Z�.GROUltfr Banal Ruaa Tsar a Ftaja�ix f�xda .. ... 1 �I q i' Fa84EYP3 c:9RY4x> v7aaafL'03:' -Ya3s \ {�v�vra el-1711111 ME 0 w') 0 .,73 4 N ASR Wells The project includes 26 wells, each of which has about 4 cfs extraction ca- pacity and 3 cfs injection capacity. The wells are 800 to 1,200 feet deep, and are perforated in the Fox Canyon Aquifer. The wells have vertical tur- bine pumps, with motors ranging from 600 to 800 hp. Each well has a sensor which continuously monitors ground- water level. Injection and extraction Treatment Facilities Water injected into the wells is a high quality potable supply. When water is extracted it is disinfected before being delivered to Calleguas' customers. Disinfection is accomplished through the addition of chlorine and am- monia to form chloramines. This chloramine residual keeps the water safe as it is delivered through distribution pipelines and reservoirs. It is the same form of disinfec- tion used for Calleguas' other sources of supply. It is anticipated that additional treatment for removal of iron and manganese may be required. After the wells are brought on line, water quality testing will be performed to determine the level and type of treatment which may be necessary for long term operations. rates can be controlled remotely through a supervisory con- trol and data acquisition (SCADA) system, however transfer- ring between injection and extraction modes must be accom- plished manually. For injection, each well includes a primary and secondary injection system. In primary injection mode, water is routed to the pump discharge header and into the pump column. For higher injection rates, the secondary injection system can be used to inject water into the annulus. Grimes Canyon Reservoir The 5 million gallon Grimes Canyon Reservoir provides bal- ancing storage between the well fields and the Calleguas dis- tribution system. During injection operations, water is routed from the distribution system to the reser- voir and then distrib- uted to the wells. During extraction op- erations the process is reversed. Wells are brought in and out of service according to water levels in the reservoir. ':.,�.uw.w.. ",:.; -_.... / /t7`l ,ir.',r,,,. „ %,_.::: ..,<,,., O/tf, > „�1 t1;'��, :;9 �'fFE �«f.,,fw�.'.:W .,,, .,�.„ �c��:? ,sk” �Si�.g:.' ,l,123C:iu ., .0/..N.., laF."�'°!.x. a �•, ,,,, ir,., ,;,. Conveyance Pipelines Pump Stations & Pressure Twenty-six miles of large diameter pipeline deliver water between the well fields and Calleguas' Conejo facility in Thousand Oaks. From this facility, water can be deliv- ered to all parts of Calleguas' service area. The pipelines are cement mortar lined and coated steel ranging from 60 inches to 72 inches in diameter. Some of the pipelines have special tape wrap coatings to protect them from cor- rosion and adjacent cathodic protection systems. The pipelines were built using primarily open trench methods, with tunneling used to cross rivers and major roadways. Regulating Stations Two pump stations are needed to deliver water from the well field to Calleguas' customers. Moorpark Pump Station will deliver up to 100 cfs of water from the well fields to the cities of Moorpark, Camarillo, Oxnard and Port Hueneme, and neighboring unincorpo- rated areas. Moorpark Pump Station will be built in a style consistent with the local architecture and will be equipped with standby generators to assure reliable operation during power outages. Conejo Pump Station, a forty year old pump station which is to be rehabilitated as part of this project, will deliver wa- ter from the well fields to the cities of Simi Valley, Thou- sand Oaks, and the unincorporated areas of Oak Park, North Ranch, and Sherwood. Conejo Pump Station is lo- cated at Calleguas' Conejo facility in Thousand Oaks. A pressure regulating station located at Moorpark Pump Station delivers water from Calleguas' distribution system to Grimes Canyon Reservoir for delivery to the wells. 000 175 (11 () ( _.". .1 )1436