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HomeMy WebLinkAboutAdditional Funding in Preparation for Possible El Nino Storm 9 CITY OF HUNTINGTON BEAD MEETING DATE: October 6, 1997 DEPARTMENT ID NUMBER:PW97 -426 Council/Agency Meeting Held: D 7 Deferred/Continued to: W/Approved ❑ Con i Wally Ap roved Denied City Clerk's Signature/ Council Meeting Date: October , 1997 Department ID Number: PW97 - 426 CITY F HUNTINGTON BEACH QUEST FOR ACTION SUBMITTED TO: HONORABLE AND CITY COUNCIL MEMBERS �U�fTTED BY: MICHAEL T. UBERUAGA, CITY ADMINISTRATOR ?FO PREPARED BY: LES M. JONES II, DIRECTOR OF PUBLIC WORK SUBJECT: APPROVAL of ADDITIONAL FUNDING in PREPA POSSIBLE EL NIWO STORMS. Statement of Issue,Funding Source,Recommended Action,Alternative Action(s),Analysis,Environmental Status,Attachment(s) Statement of Issue: Additional preparatory measures are required for El Nino which is above the current funding in the Public Works Department Budget. Funding Source: Funds for these preparatory measures are not included in the approved 1997/1998 budget. Therefore, $198,205 must be transferred from the City's unappropriated General Fund balance to the following fiscal accounts. : . ............ .. «'>... .. ::::: R . : N ......:: � ............... .. T �E-A -P -510-304_00 Street Maintenance 32,88>5 E-AA-PW-515-390-00 Bridge & Channel Maint. 100,000 E-AA-PW-591-659-00 Maintenance Pump Engines 65,320 TOTAL Recommended Action: Motion to: .- I RCA426.DOC -2- 09/29/97 3:17 PM REQUEST FOR ACTION MEETING DATE: October 6, 1997 DEPARTMENT ID NUMBER:PW97 - 426 Authorize the Director of Finance to transfer a total of $198,205 from the City's unappropriated General Fund balance to the appropriate Public Works program account. Alternative Action(s): Forego action on one or more of the additional preparatory measures. Analysis: The International Research Institute for climate predications has issued an El Nino warning for this winter. An El Nino, the "Little One" in Spanish, is a disruption of the ocean- atmosphere system in the tropical Pacific having important consequences for weather around the world. El Ninos usually occur approximately every two to seven years. However, the phenomenon was not of real concern until the El Nino storms of 1982-83. During these storms, heavy rains forced 3,000 residents of Huntington Beach to flee their homes. Additionally, twenty foot waves severely damaged the Huntington Beach Pier and destroyed the "End Cafe." Recognizing that an El Nino could pose a potential threat to Huntington Beach residents, Public Works staff has begun the preparation for a wet and stormy winter. Although these preparations are considerable, as identified in the Department of Public Works "El Nino Report" (see Attachment A), staff is recommending the following additional preparatory measures. ADDITIONAL PREPARATORY MEASURES ITEM #1 Purchase of Sand - As a matter of past practice, sand for winter storm protection has been obtained from city beaches and most recently a site in Central Park. However, sand can no longer be removed from the beaches and the continuing depletion of this material from the Central Park location is an ongoing concern. The cost of purchasing sand for 30,000 bags is $14,350 (i.e. 480 per bag). ITEM #2 Purchase of Automatic Sandbagger - Although sandbags are available to the public at the City's Public Works Corporation Yard, each resident is required to fill their bags. Filling bags after daylight and during heavy rains is tedious and dangerous. Purchasing an automatic bagger, at a cost of $18,535, would give staff, or volunteers, the opportunity to fill bags in advance. Additionally, filled bags could be delivered to key locations for easier pick up by residents. ITEM #3 Renting Alpha Numeric Pagers - During an emergency, radio communications are frequent; thereby making it difficult to reach field personnel. Alpha numeric pagers are an excellent means of getting messages to employees when the RCA426.DOC -3- 09/29/97 4:48 PM REQUEST FOR ACTION MEETING DATE: October 6, 1997 DEPARTMENT ID NUMBER:PW97 -426 radios are busy. Ten alpha numeric pagers can be rented, for four months, at a total cost of$320. ITEM #4 Mobile Pumping Unit - the City's Storm Drain Master Plan identifies critical areas subject to flooding during heavy rains. Several of these locations have experienced flooding of personal property. The utilization of a mobile pumping unit, coupled with other interim measures, could prevent storm waters from entering residents' homes. The cost of a mobile pump, including 150 feet of flexible discharge hose is $65,000. ITEM #5 Lark/Trophy Interim Drainage Facility - Residents fronting Lark Lane and Trophy Drive (see Attachment B - Lark/Trophy Location Map) continue to experience flooding of their homes during heavy and prolonged rains. To correct this problem, two new pumps must be installed at the Shields Pump Station and 4,500 lineal feet of 24 inch to 65 inch pipe installed. The estimated cost of these improvements is $3.5 million. Although these funds are not available, staff has developed an interim solution to the flooding of homes. Two eight inch storm pipes can be installed beneath property located at 16871 Lark Lane. These lines will drain off the high waters, from Lark and Trophy into the Meadowlark Golf Course, thereby preventing the flooding of homes. The estimated cost of this project is $50,000. ITEM #6 Gregory Lane Storm Channel Repairs - Small blockwalls on both sides of an open storm drain structure directly adjacent to 18762 Gregory Lane (see Attachment C - Gregory Lane Location Map) are failing. One of the walls has collapsed into the channel structure; thereby impeding the flow of storm waters. The estimated cost of repairing this structure is $50,000. COST SUMMARY :I` 'EM >' '': :> ::>:::::>: I PTION..................................................................E. ' I NI,4TEC)..C. . T.......... ....::......... : :::::�a::::::::::::::::::::::::..:::::..: 5:.:.:::::::: .......................... ........ .................................................................................................................. .............................................................................................. 1. Purchase sand for 30,000 bags $14,350 2. Purchase automatic sandbagger 18,535 3. Rent 10 alpha numeric pagers for four months 320 4. Purchase one mobile pumping unit including 150 feet of flexible discharge hose 65,000 5. Construct an interim drainage facility in the Lark/Trophy Drive area directly adjacent to Meadowlark Golf Course 50,000 6. Repair an open storm drain channel adjacent to 18762 Gregory Lane 50,000 TOTAL COSTS: RCA426.DOC -4- 09/29/97 3:17 PM REQUEST FOR ACTION MEETING DATE: October 6, 1997 DEPARTMENT ID NUMBER:PW97 -426 The approved 1997/1998 City Budget does not include funds for these additional preparatory measures. Therefore, staff recommends that the Director of Finance be authorized to transfer $198,205 from the City's unappropriated General Fund balance to the following fiscal accounts. 4C E-UNT:N.UM. . .....................................ESiCR[PT1 N.::::::::::::::::::::::::::::::.::::::::........ I©.UNT::.:::::::::::...::::::::::::. E-AA-PW-510-304-00: Street Maintenance:::::::................................................................................... :::::::: 32,885 E-AA-PW-515-390-00 Bridge & Channel Maint. 100,000 E-AA-PW-591-659-00 Maintenance Pump Engines 65,320 TOTAL > ><< >< > >< > ' <> >'> > ' 1: €."' 0 <.: Environmental Status: N/A Attachments: City Clerk's . - NumberDescription A. El Nino Report B. Lark/Trophy Location Map C. Gregory Lane Location Map D. I Financial Impact Statement RCA Author: Les M. Jones RCA426.DOC -5- 09/29/97 3:17 PM ATTACHMENT 1 DEPARTMENT OF PUBLIC EL NINO REPOR T-. SEPTEMBER 12 , 1997 � r i� .¢s s?�y�i.;4� yx f.�; '� �s �t'�$': ., C k'��ti ,a ii•s' '$�,-r'�}.h�r - �u�',�,,� t t y€, bF n # gr ''h �brf�• fil" d1'�6 -w1 �fslsr'v.tar4ti € ��c�.ke - F r, �t �m,� w +, �� � that! A e c�✓',aa fi � 'Jy�y s� i' �• �' F�.t r { -�••�.lV �� r r'£i'aii;�-r"i•� Yr`ua �trrk" ".:k4if,4:W9:i;��;'•�.�at;:..ein,�,'.,.�' •K:�:.�C�y<�;.'�3,�y�'�V"' c'aa"b� t- ✓�f� J CITY OF HUNTINGTON BEACH Department of Public Works THE "EL NIN011 September 12, 1997 ............... . .......... . ........ ......... ....... ........... ... . ... X:...... ...... Tx ........ ............... ............ An El Nifio, the "Little One" in Spanish, is a disruption of the ocean-atmosphere system in the tropical Pacific having important consequences for weather around the world. (See attachment 1). Among these consequences, along coastal areas, are higher waves and increased rainfall. .............................._XX... .................. ......I................. ......... ... AU ....... .............. ... S . ....... ........ .... ...... ......... ....... ...... . .. ......... El Nihos are the result of global climate changes that begin with a shift in trade winds in the equatorial Pacific. Usually, the trade winds blow west pushing big pools of warm water toward Indonesia and Australia. But for reasons still unknown, there are long periods in which the winds fade or even reverse direction causing the warm water to surge east toward South America. Some of these warm currents curl north toward Southern California. The evaporation of these warm waters cause storm activity to intensify greatly. And, these storms can ride straight into Huntington Beach if the subtropical jet stream shifts north. id . .... ... .. ...... .... ..... .................... .......... .. ...... U.00 N.C. F." 0 RRMICO"' . ......... ..... ...................... E I Nifios usually occur approximately every two to seven years. However, this phenomenon was not of real concern until the El Nino storms of 1982-83. During these storms, heavy rains forced 3,000 residents of Huntington Beach to flee their homes. Additionally, twenty foot waves destroyed the Seal Beach Pier and severely damaged the Huntington Beach Pier. Damages to the Huntington Beach Pier resulted in the construction of a new pier and restaurant. ... ........... . ............. :4 ...... MP EPAR1N0if0R':E NIN ........ ..... ............ ............. Inter-Agency Coordination According to the International Research Institute for Climate Predictions (see Attachment 2), this year's El Niho is shaping up to be one of the biggest in the last 50 or 60 years, others have softened this ominous prediction. Recognizing that either m prediction could pose a potential threat to Huntington Beach residents, Public Works staff has begun the preparation for a wet and stormy winter. On August 19, 1997, four members of the Public Works staff attended a statewide El Nino Workshop at the Scripps Institute of Oceanography in La Jolla, California. Although the workshop was extremely informative, specific concerns relative to coastal city preparation were not discussed. Therefore, Public Works staff has scheduled a Strategic Planning Workshop (see Attachment 3), for,Orange County Coastal Cities on Wednesday, September 17, 1997, between 10:00 AM and 2:00 PM at the City's Civic Center complex. Additionally, Public Works staff met with the County of Orange on September 5, 1997, to discuss flood control channel preparations. Although these meetings will more than likely identify, or result in, additional ways of preparing for an El Nino, Public Works staff has already begun the preparation process based on past storm experiences. Improving/Maintaining City Facilities The Engineering staff has identified twelve (12) low lying areas (see Attachment 4 - Critical Areas Map) which need immediate attention in order to minimize flood damage in an El Nino. The total cost to upgrade these areas, exclusive of Orange County Channel improvements, is approximately $17 million. Although the city has not been able to fund, or identify an external source of revenue for this level of work, numerous "Stop Gap Measures" as listed below have been completed at six of the twelve locations. Critical Area Location "Stop Gap" Measures 1. Halifax Drive • Installed 36" storm drain line between Edwards and Victoria. 2. Greer Annex Park • Lined on-site storm water retention basin with concrete and installed drainage pump. 3. Corsican Dr/Murdy Channel • Repaired channel damage, raised east side of channel to force potential flood waters into city park rather than apartments and installed additional storm water inlets. 4. Slater Channel • Completed miscellaneous channel repairs at opening to Springdale Street crossings. 2 5. Lark Drive Developed interim solution to shift water into Greenview & Meadowlark Golf Course. Estimated cost of Trophy Drive construction is $50,000 (see Memorandum included in Attachment 4). Further action pending receipt of private easement. • County has lined significant portion of channel adjacent to this residential development. 6. Michael Drive • Diverted some of the area storm waters to west side of Beach Boulevard and installed additional storm water inlets. The Maintenance Division has an ongoing program of routinely cleaning catch basins, channels and harbor storm water outfalls. In preparation for an El Nino, with high tides and heavy rains, Public Works Storm Watch Patrols (see Attachment 5) will provide the following services as may be needed 1. Storm drain pipes, in the harbor area adjacent to Pacific Coast Highway, dump rain water into city channels, which flow directly to the ocean. During a high tide, ocean waters flow into city channels and water can rise high enough to enter into the storm drain pipes and empty into city streets. Storm drain patrols will monitor high tide conditions, and, when necessary, will insert and inflate balloons, within the storm drain pipes, to preclude sea waters from entering the storm lines and potentially flooding streets and homes. 2. Public Works staff has 30,000 unfilled sandbags, on hand, and is currently developing a plan to fill the bags and distribute to residents via city volunteer programs. 3. Street barricades, flood signs and traffic control delineators have been purchased and will be installed, by Storm Watch Patrols, where needed. Trees and other types of vegetation can cause havoc during a major storm. As a result, the Park, Tree and Landscape Division has undertaken completion of the following tasks. 1. Trees have been trimmed to preclude branches from breaking and falling into the street; thereby restricting the flow of storm waters and vehicular traffic movement. 2. Channel vegetation, that would restrict the flow of storm waters, has been sprayed with a herbicide. 3 3. Storm Maps have been updated to include critical locations requiring special consideration. 4. Tools and equipment used extensively during winter storms, have been checked and are ready. Water Division responsibilities include maintenance of the City's Storm Drain Pump Stations. The proper maintenance of these facilities, in light of a pending El Nino, is imperative. As of this date, all pump station facilities are operational. Additionally, station engine control systems, including emergency backup equipment, are operational. Routine maintenance includes the following tasks. 1. Monitor the National Weather Service reports provided by EOC. 2. Maintain all equipment at 100% readiness starting September 1st (normally rain season starts October 1 thru April 30). 3. Inspect and operate all pumping units on a weekly basis to insure readiness. 4. Monitor all stations 24 hrs/day, 7 days/week via Telemetry System. 5. Emergency Stand-by personnel assigned 24 hrs/day, 7 days/week. 6. Monitor rain rate via control systems and activate "patrols" as needed. 7. As required, assign operator to man stations in high flooding areas (such as Shields Station). Pending Preparations Although the Public Works Department has completed considerable preparations, staff is certain that other measures will be necessary subsequent to the upcoming Strategic Planning Workshop. In the interim, Public Works is now pursuing the following additional preparatory measures. 4 Description Estimated Cost 1. Purchase of sand for 30,000 bags. (i.e. 48C/bag) 14,350 2. Acquisition of automatic sandbagger. Sole source 18,535 item @ a cost of $18,535. 3. Replacement of heat exchangers at the Atlanta 31,000 Storm Pump Station. (Slated for Council Action on 9/15/97). 4. Rental of 10 Alpha Numeric Pagers (i.e. $80/Mo. 320 x 4 months). 5. Purchase a mobile pumping unit including 150' of 65,000 flexible discharge hose. The unit is diesel powered and trailer mounted. 6. Construct interim drainage facility in the 50,000 Lark/Trophy Drive Area. 7. Repair of open storm drain channel adjacent to 50,000 18762 Gregory Lane. TOTAL COSTS $229,205 Exclusive of any applicable staff overtime costs, or additional measures identified as a result of upcoming meetings with the County of Orange and other coastal cities. Attachments: 1 - U.S. Dept. of Commerce Report - What is an El Nino. 2 - International Research Institute for Climate Prediction - The 1997/98 El Nino. 3 - Strategic Planning Workshop 4 - Critical Areas Map 5 - Emergency Response Program for 1997 Storm Season 5 NOAA/PMEL/TAO -What is an PI Nino (ENSO)? Page 1 U.S.Dept of Commerce/NOAA /PMEL/TAQ/EI Alino Theme Page What is an El Nino? Illustrated with realtinte graphics front the TA 0 arra of moored buoys in the Equatorial Pacific Ocean. For more information, see the El Nino Thente Page. ►` 1997 El Nino Information ► Fenomeno del Nino: Spanish language site provided by Centro Peruano de Estudios Sociales (CEPES), the Peruvian Center for Social Studies. Normal and El Nino conditions in the tropical Pacific Ocean Normal Cor:&iict:s ......--••--•--------, Ytind and Teraperature at EQ, I I O'W NORMALT L _J F.,"41ho COnditSgns =--------- DO — - w s SGO I$-0 i 7A80ND )PNa11a IAS0N1) 1FXAHI — �- i l�81 l982 lBB2 lB69 .. .......................................... (a)Schematic diagram of normal and El Nino conditions in the Pacific Ocean, and (b) wind and temperature on the Equator at 11OW El Nino is a disruption of the ocean-atmosphere system in the tropical Pacific having important consequences for weather around the globe. Among these consequences are increased rainfall across the southern tier of the US and in Peru, which has caused destructive flooding, and drought in the west Pacific, sometimes associated with devastating brush fires in Australia. Observations of conditions in the tropical Pacific are considered essential for the prediction of short term (a few months to 1 year) climate variations. To provide necessary data, NOAA operates a network of buoys which measure temperature, currents and winds in the equatorial band. These buoys daily transmit data which are available to researchers and forecasters around the world in real time. In normal, non-El Nino conditions (top panel of schematic diagram), the trade winds blow towards the west across the tropical Pacific. These winds pile up warm surface water in the west Pacific, so that the sea surface is about 1/2 meter higher at Indonesia than at Ecuador. The sea surface temperature is about 8 degrees C higher in the west, with cool temperatures off South America, due to an upwelling of cold water from deeper levels. This cold water is nutrient-rich, supporting high levels of primary productivity, diverse marine ecosystems, and major fisheries. Rainfall is found in rising air over the warmest water, and the east NOAA/PMEL/TAO - What is an F1 Nino (ENSO? Page 2 Pacific is relatively dry. The obse. Aons at 110 W (left diagram of 110 W nditions) show that the cool water (below about 17 degrees C, the black band in these plots) is within 50m of the surface. During El Nino (bottom panel of the schematic diagram), the trade winds relax in the central and western Pacific leading to a depression of the thermocline in the eastern Pacific, and an elevation of the thermocline in the west. The observations at 110W show, for example, that during 1982-1983, the 17-degree isotherm dropped to about 150m depth. This reduced the efficiency of upwelling to cool the suface and cut off the supply of nutrient rich thermocline water to the euphotic zone. The result was a rise in sea surface temperature and a drastic decline in primary productivity, the latter of which adversely affected higher trophic levels of the food chain, including commercial fisheries in this region. The weakening of easterly tradewinds during El Nino is evident in this figure as well. Rainfall follows the warm water eastward, with associated flooding in Peru and drought in Indonesia and Australia. The eastward displacement of the atmospheric heat source overlaying the warmest water results in large changes in the global atmospheric circulation, which in turn force changes in weather in regions far removed from the tropical Pacific. El Nino can be seen in Sea Surface Temperature in the Equatorial Pacific Ocean Li:Yu::J:i;-kc- 32:•,"C, Z:r,_v(-.r . 1%::Xm>J:ip k1—:i._. 'itata(n,"4) We'd ::!Z t., ie t:'i t4krA Ita'A SN• t�:::_.•'l' :_�Ji'Ka,:=d •-__ .,. ,.. ..,...wlj. ti,1:F iL:::=:.i -- a.. a , „...:...- ....-. � i a .- NYC; ,'-�:.,�:'...�..� .. ..:_•;J:-_:e:::�ej-1:.mow:: (a) January 1991 (a normal year), and (b) January 1992 (an El Nino Year). El Nino can be seen in measurements of the sea surface temperature, such as those shown above, which were made from the TAO Array of moored ATLAS buovs and PROTEUS buoys. In January 1991, the sea surface temperatures and the winds were near normal, with warm water in the Western Pacfic Ocean (in red on the top panel of January 1991 plot), and cool water, called the "cold tongue" in the Eastern Pacific Ocean (in green on the top panel of the January 1991 plot). The winds in the Western Pacific are eery weak (see the arrows pointing in the direction the wind is blowing towards), and the winds in the Eastern Pacific are blowing towards the west (towards Indonesia). The bottom panel of the January 1991 plot shows anomalies, the way the sea surface temperature and wind differs from a normal January. In this plot, the anomalies are very small (yellow/green), indicating a normal January. January 1992 was the peak of an El Nino year. In January 1992, the warm water (red in the top panel of the January 1992 plot) has spread from the western Pacific Ocean towards the east (in the direction of South America), the "cold tongue" (green color in the top panel of the January 1992 plot) has weakened, and the winds in the western Pacific, usually weak, are blowing strongly towards the east, pushing the warm water eastward. The anomalies show clearly that the water in the center of Pacific Ocean is much warmer(red) than in a normal January. An animation of E1 Nino If you have an MPEG animation viewer, and sufficient memory, you can view an animation of El Nino which shows the changes in monthly sea surface temperature in the tropical Pacific Ocean. The animation is v;about 1 Megabyte in size. As you view this animation, you will see the warm water spreading from the western Pacific to the eastern Pacific during 1991. The bottom panel in the animation, labeled anomalies, shows how much the sea surface temperature for each month is different from the long term average for that month. The red color in the anomalies plot indicates that the temperature of the water is much warmer than NOAA/PMEL/TAO - What is an F' Nino (ENSO)? Page 3 is normal for that month. Blue co,„, indicates that the water is much cool4i"than is normal for that month. Several recent El Ninos can be seen in Pacific Sea Surface Temperature In the left hand panel, you see the sea surface temperature at the Equator in the Pacific Ocean (Indonesia is towards the left, South America is towards the right). Time is increasing downwards from 1986 at the top of the plot, to the present, at the bottom of the plot. The first thing to note is the blue "scallops" on the right of the plot, in the eastern Pacific. These indicate the cool water typically observed in the Eastern Pacific (called the "cold tongue"). Cold tongue temperatures vary seasonally,being warmest in the northern hemisphere springtime and coolest in the northern hemisphere fall. The red color on the left is the warm pool of water typically observed in the western Pacific Ocean. El Nino is an exaggeration of the usual seasonal cycle. During the El Nino in 1986-1987, you can see the warm water (red) penetrating eastward in the Spring of 1987. There is another El Nino in 1991-1992, and you can see the warm water penetrating towards the east in the northern hemisphere spring of 1992. 2 IL »� 1A t ■.X L.tl.L•v 4 t:ft1 Mean and anomalies of sea surface temperature from 1986 to the present, showing El Nino's in 1986-1987, 1991-1992, 1993 and 1994. El Nino years are easier to see in the anomalies on the right hand panel. The anomalies show how much the sea surface temperature is different from the usual value for each month. Water temperatures significantly warmer than the norm are shown in red, and water temperatures cooler than the norm are shown in blue. In the right-hand plot of sea surface temperature anomalies, it is very easy to see El Nino's, with water warmer than usual (red) in the eastern Pacific, during in 1986-1987, 1991-1992, 1993 and 1994. Notice the very cool water (blue), in the Eastern Pacific, in 1988-1989. This is a La Nina, which occurs after some (but not all) El Nino years. It is unusual for El Ninos to occur in such rapid succession, as has been the case during 1990-1994. More information about E1 Nino • Frequently Asked Questions • Predictions and Forecasts • Present conditions in the tropical Pacific measured by NOAA's TAO network of moored buo,L • El Nino Theme Page: Centralized access to widely distributed information • Fenomeno del Nino: Spanish language site provided by Centro Peruano de Estudios Sociales (CEPES), the Peruvian Center for Social Studies. Information about the name El Nino _ El Nino was originally recognized by fisherman off the coast of South America as the appearance of unusually warm water in the Pacific ocean, occurring near the beginning of the year. El Nino means The Little One in Spanish. This name was used for the tendency of the phenomenum to arrive around Christmas. There has been a confusing range of uses for the terms El Nino, La Nina and ENSO by both the scientific NOAA/PMEL/TAO - What is an r�' Nino (ENSO)? Page 4 community and the general pubhL, which is clarified in this web page on u,.anitions of the terms ENSO Southern Oscillation Index. El Nino and La Nina. Selected References Philander, S.G.H., 1990: El Nino, La Nina and the Southern Oscillation. Academic Press, San Diego, CA, 289 pp. Hayes, S.P., L.J. Mangum, J. Picaut, A. Sumi, and K. Takeuchi, 1991: TOGA-TAO: A moored array for real-time measurements in the tropical Pacific Ocean. Bull. Am. Meteorol. Soc., 72, 339-347. (abstract available) McPhaden,M.J., 1993: TOGA-TAO and the 1991-93 El Nino-Southern Oscillation Event. Oceanography, 6, 36-44. (entire paper available) • El Nino references: TAO refereed iournal articles and other TAO-120ners. • Reports to the Nation -El Nino and Climate Prediction • El Nino Theme Page - Central access to widely distributed El Nino data and information. • TAO Project Office -People to Contact- What's new in TAO? • Credits and acknowledgements El Nino Theme Pagge ( TAO Project People to contact Nancy Soreide, nns@pmel.noaa.gov IRI: Hot Topic Page 1 El Nino's, Past, Present, and Future The sea surface temperatures in the tropical eastern Pacific Ocean are warming dramatically this year to induce the onset of the phenomena known as El Nino. One of the goals of the IRI is to forecast the occurrance and magnitude of El Ninos and to disseminate this information to the public. The El Nino for 1997-98 is shaping up to be one of the biggest in the last 50 or 60 years. It's unusually early for a winter warning from national weather experts, but they see signs of El Nino in several spots around the globe. Scientists say the signs of heavy weather are so strong this year that they think both Northern and Southern California may be pummeled this winter. Normally, an El Nino affects only part of the state. The conditions are called El Nino because the warm sea surface temperatures that trigger them arrive around Christmas. El Nino, which means "the little boy" in Spanish, is a reference to the Christ child. The conditions generally arrive once every two to seven years and sometimes two years in a row. Every event varies in duration, location and intensity. J V MIZE WE READY ??? NINO Strategic Planning Workshop for Orange County Coastal Cities WE&EsdAy, SEPTEmbER 17, 1997 10 AM 2 PM R.S.V.P. gy VISM? HUNTiNqTONBEAch CITY HALL, Rm's B -7 & 8 CALL 536-S431 Lunch Provided 11 -oil -PIP LEG EN 0"NAGE DISTRICT BOUNDARY --------— Cry BOUNDARY 2 CRITICAL AREAS L)asnmc cHAssrL OtICAM 20 Critical Areas City 6,11 Huntington Bea,-:h CITY OF HANTAIGTON BEACH Storm Drain Master Plan PUBLJC WORKS DEPARTMENT F- uvy 7DOE 'I Critical Areas HALIFAX ®RIVE 0R7--ER ANNEX PARR ®RANGE COUNTY _ `` CHANHELS - :1, ��. �. WIURDY CHANNEL ©RWE f �� II,? [ ✓;il �'� rJUN?7INSTCH ARTS. Lj 11 k.MCK y.L ''IIG I.1� IL.. I I I I'I I ? III �• i I I I�.� S'JiA {�[ G,I Ar R0�' CS \ '4 if �= �JIJ PACIFIC NOT TO scuE '�� � I1I I 3 c Arc, LARK ©R., GREENWHY AND TROPHY DR. 5'�� SLAVER Cj)AII�i� � ?: IM.LIUA�C3 17TH STREET ' u�� of iJ L K+NatoN 6AXE PA fX OCEAN aA..uc u I E� GEND DRAINAGE DISTRICT BOUNDARY —•— —•—— CIrY BOUNDARY 2 — CRITICAL AREAS — EXISTING CHANNEL praAK'1 20 Critical Areas STOP GAP MEASURES Halifax Drive has a tributary area of approximately 1,200 acres and is bounded by Bolsa Avenue to the North, Golden West Street to the East, McFadden Avenue to the South, and Edwards Street to the West. • The existing 66 inch diameter reinforced concrete pipe (RCP) storm drain in McFadden Avenue between the CO4, Orange County Flood Control Channel (OCFCC) and Edwards Street is deficient in size. This causes storm water to back up and flood the residential areas north of McFadden Avenue and east of Edwards Street. To correct these deficiencies, the existing 2,700 lineal foot system needs to be replaced with a 8 foot by 12 foot reinforced concrete box culvert. This would allow for the construction of new storm drain systems into the surrounding residential area, thereby relieving the flooding. The estimated cost is $3.5 million. • Mitigation to Date - Installed 36" storm drain line between Edwards and Victoria. • Sandbags. • Barricading if necessary. Greer Annex Park has a tributary area of approximately 300 acres and is bounded by McFadden Avenue to the North, Golden West Street to the East, Shannon Drive to the South, and Wild Plum Circle to the West. • The existing detention basin is connected via an 18 inch diameter storm drain pipe to an existing 63 inch diameter pipe near the southeast corner of Golden West Street and McFadden Avenue. At the present time, the existing 18 inch pipe is overburdened, not allowing efficient drainage, thereby flooding the surrounding residential tract. In addition to the Master Plan of Drainage, further studies must be completed to determine the optimum design and construction costs required to correct this problem. • Mitigation to Date - Retention basin lined with concrete and pump installed. • Clean retention filters. • Pump water level down prior to storms. • Barricades and signage if necessary. Orange County Channels There are nine principal Orange County Flood Control Channels that serve and traverse the City of Huntington Beach at various locations. • These channels are the backbone of the entire County's flood prevention and storm drain system. Therefore, all maintenance and upgrading of these facilities is a County reponsibility. However, the City has a critical interest in these channels, as most of our storm drain systems are dependent on their proper operation. Corsican Drive (Murdy Channel) #27409 has a tributary area of approximately 1,200 acres and is bounded by Center Drive to the North, Southern Pacific Railroad to the East and west, and the County Flood Control Channel (CO5) to the South. • This existing under-sized City owned concrete lined channel is deficient in approximately forty-five percent of its length. At the present time, any substantial rainfall will result in waters overtopping the channel walls. To correct these deficiencies, the City must replace and repair portions of this channel at an estimate cost of$2.5 million. • Mitigation to Date - Repaired channel damage, raised east/south of channel adjacent to apts.) and installed additional; catch basins on applicable portions of Gothard. • Provide sandbags. • Continue cleaning and catch basic and channel. • Barricading when necessary. 17th Street has a tributary area of approximately 75 acres and is bonded by Palm Avenue to the North, 16th Street to the East, PCH to the South, and 19th to the West. • The existing storm drain system is deficient in both structural condition and size. Currently, the only catch basins for the entire area are located near PCH Therefore, the flood water up stream of Palm Avenue must utilize streets to traverse its way to the catch basins, thereby flooding the entire area. To correct these deficiencies, the existing system must be replaced with approximately 5,000 lineal feet of 24 in to 54 inch pipe, including new catch basins and an outlet structure located south of the beach service road. The estimated cost is $1.5 million. • No action to date. • Barricades and signage are needed. • Sandbag "beach concessions." • Clean existing half round storm drain inlets at street intersections. • Request Beach Maintenance to clean storm drain outlets on beach as needed. Slater Channel has a tributary area of approximately 300 acres and is bounded by Slater Avenue to the North, Central Park to the east, various residential tracts and Hope View School to the south, and Springdale Street to the west. • This existing City owned earthen channel is deficient in both size and condition. At the present time, flood waters have caused severe erosion and bank failures over the entire length of the channel. To correct these deficiencies, the channel must be enlarged and concrete lined, costing an estimated $3.0 million. • De-silting adjacent to equine center or grate was cleaned to slow flow. • Continue to monitor cleanness (sic). • Foliage left in place to secure failing dirt walls. • Applying for Corps of Engineers Grant to line channel (in addition to FEMA request). • Pursue de-silting Talbert Lake to slow flow. #27409 Lake Park is the up-stream end of a 150 acre tributary area and is bounded by 12th Street to the north, Lake Street to the east, 11th Street to the south, and Main Street to the west. • This is the first area within the Downtown drainage district to be inundated by flood waters due to the existing undersized storm drain system. At the present time the storm water cannot get into the existing system, thereby causing flooding in the surrounding park and residential area. To correct the deficiency, a new storm drain system of approximately 4,500 lineal feet of 51 inch to 87 inch pipe and appurtenances must be installed with an outlet structure south of the beach service road. The estimated cost is $2 million. • No action to date. • Signs and barricades as needed. • Clean existing half round storm drain inlets at adjacent street intersections as needed. Lark Drive, Greenview, and Trophy Drive are streets within the Shields Drive Pump Station water shed area. The tract is bounded by Heil Avenue to the north, Springdale Street to the east, Warner Avenue to the south, and the Meadowlark Golf Course to the west. • This area is frequently saturated by flood waters because of deficient pump station and storm drain system. Currently, the storm water cannot be pumped out of the existing system fast enough, thereby causing flooding in the surrounding residential area. To correct these deficiencies, two new pumps must be installed at the existing pump station, in addition to approximately 4,500 lineal feet of 24 inch to 65 inch pipe. The estimate cost is $3.5 million. • Mitigation to Date - Developed interim solution to shift water into gold course at estimated $30,000 to $60,000 (construction pending private easement). Storm drain station and forebays. County has lined channel adjacent to Trophy cleaned at channel bend and bend on south side of Warner adjacent to shopping center. • Sandbags delivered to vacant SCE site. • Barricading and signage as needed. • Push for easement. Michael Drive has a tributary area of approximately 50 acres and is bounded by Slater Avenue to the north, residential units to the east, Newman Avenue to the south, and Beach Boulevard to the west. • This area's storm drain system is undersized, thereby causing flooding in the surrounding residential area. To correct the deficiencies in the immediate area, the existing 3o inch and 48 inch pipes must be replaced with 63 inch pipes. In addition, the existing culvert, crossing under Slater Avenue, east of Jefferson Street, must be replaced with a larger culvert. The estimated cost is $400,000. #27409 • Mitigation to Date - Diverted Beach Blvd. water to Central Park. Added two catch basins easterly of Michael and Jefferson. • Sandbags. • Keep adjacent City channel cleaned. • Barricading if necessary. • Cleared brush from properties adjacent to channel. Huntington Apartments has a tributary area of approximately 30 acres and is located within the City of Huntington Beach, yet is in the upper end of a drainage area controlled by the City of Westminster. The Huntington Apartments are bounded by Edinger Avenue to the north, Newland Street to the east, and the San Diego Freeway to the south and west. • The City of Westminster must complete storm drain renovations to the surrounding area before Huntington Beach can implement its storm drain improvements around the Huntington Apartments. At the present time, the existing system cannot accept the storm water fast enough, thereby causing flooding in the Huntington Apartments. To correct these deficiencies, the City of Huntington Beach would need approximately 400 lineal feet of 27 inch to 45 inch pipe and new appurtenances. The estimated cost for the City of Huntington Beach is $200,000. • City of Westminster, County problem and CalTrans problem. • Provide sandbags. • Barricading when necessary. • Requires on-site action by gated community. #27409 EMERGENCE' RESPONSE PROGRAM FOR 1997 STORM SEASON (El Nino) For the purpose of emergency response the city is divided.into four different sections, each of which are controlled by a designated area coordinator. The coordinator is responsible for the routing of all emergency calls in his area to available personnel. In the event of an emergency, calls received at the City Corporation Yard are forwarded to the respective coordinator who assigns the response based on the nature of the emergency or the potential threat to public safety. 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Uberuaga, City Administrator From: Robert J. Franz, Deputy City Administrator Subject: FIS 98-01 Preparation for El Nino Date: September 22, 1997 As required by Resolution 4832, a Fiscal Impact Statement has been prepared for Preparation for El Nino . If the City Council approves this request (total appropriation of $198,205) the estimated unappropriated, undesignated fund balance of the General F d at September -;'�1998 will be reduced to $4,9 1 , 5 Robert J. Krkinz, Deputy City Administrator ATTACHMENT D M 9801 Adopted Current Fund Balance -General Fund Budget Estimate Beginning Fund Balance 10/1/97 (Est) $5,100,000 $5,100,000 Less FIS 98-01 (198,205) Estimated 9/30/98 Balance $5,100,000 $4,901,795 Fund Balance -General Fund $5,500,000 — s $5,000,000 — , $4,500,000 — $4,000,000 — $3,500,000 — $5,100,000 $4,901,795 $3,000,000 — $2,500,000 — $2,000,000 — Adopted Revised Budget Estimate G:\ACCTG\[FIS.XLS]9801 Page 1 COVER PAGE REQUEST FOR LATE SUBMITTAL (To accompany RCA) Department: Public Works Subject El Nino Preparation Council Meeting Date: Oct. 6, 1997 Date of This Request: Sept. 29, 1997 REASON (Why is this RCA being submitted late?): The determination on how to present this information to Council was not immediately forthcoming. EXPLANATION (Why is this RCA necessary to this agenda?): These are preparatory measures for an El Nino and therefore should be done as soon as possible. Some of these items are construction work and will require time to complete. CONSEQUENCES How shall delay of this RCA adversely impact the City?): A delay will preclude the completion of these items. S' ure: O Approved O Denied pproved O Denied Initials Required e a ment Head Asst. City Administrator City Administrator 0027993.01