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Home My WebLink About2010-027 Emergency Action Plan - Hosler Dam CITY OF ASHLAND March 15, 2010 NOTICE OF RECEIPT The Federal Energy Regulatory Commission requires the City of Ashland to review and update the Hosler Dam Emergency Action Plan (EAP) annually and to replace it in its entirety every five years. This year is a complete replacement. Enclosed is the EAP consisting of the first 14 pages of text, two Notification Flowcharts with emergency information and an appendix consisting of the five 11 "X 17" inundation maps. The City of Ashland will annually perform a drill to ensure all agencies participate in the implementation of the flow chart. Agencies will be contacted prior to the drill to review the procedure. Please acknowledge receipt of the Revised March 2010 replacement to the HOSLER DAM EMERGENCY ACTION PLAN by signing and returning this page to: PUBLIC WORKS DEPARTMENT NANCY SLOCUM 20 E. MAIN STREET ASHLAND OR 97520 -OR- FAX TO: 541/488-6006 These acknowledgements will be documented and reported to FERC as required. If this notice is not received within 30 days from mailing a follow-up notice will be sent. Thank you for your assistance and cooperation. Sincerely, .N cuu:IJ S~ Nancy Slocum Public Works Clerk --- . ............................~-- - -- . EMERGENCY ACTION PLAN HOSLER DAM PROJECT NO. 1107 - OREGON CONTENTS OF PLAN PAGE Verification Page 2 I. Notification Flow Charts A. Failure is Imminent or Has Occurred B. Potential Hazard is Developing II. Statement of Purpose 5 , III. Project Description 5 IV. Emergency Detection, Evaluation & Classification 6 A. Measure(s) for Detection 6 B. Provisions for Evaluation 7 C. Emergency Classification 7 V, General Responsibilities Under the Emergency Action Plan 8 . A. Licensee Responsibilities 8 B. Responsibility for Notification 8 C. Responsibility for Evacuation 8 D. Responsibility for Termination & FOllow-Up 9 E. EAP Coordinator Responsibility 9 VI. Notification' Procedures - General . 10 A, Proposed Action without Warning 11 B. Proposed Action with Prior Indication 12 VII. Preparedness & Preventative Actions 13 A. General Provisions for Surveillance 13 B. Surveillance at Remotely Controlled or Unattended Dams 13 C. Response During Periods of Darkness 14 D. Response During Periods of Adverse Weather 15 E. Availability & Use of Alternative Systems of Communications - 15 F. Emergency Supplies & Resources 15 G. Other Concerns & Actions 15 VIII. Appendix 16 A, Plans for Posting the EAP and for Training, Testing & Annual Review. 16 . B. Documentation 17 C. Inundation Maps 18 G:lpub-wrksleng\FERCICurrent EAPI201 0-03-1 S EAP Update.doc Page 1 0119 . . . Verification Paae The undersigned, being first duly sworn, states that he has read the following document and knows the contents of it, and that all of the statements contained in that document are true and correct, to the best of his knowledge and belief. \\Jvt:" Michael R. Faught Public Works Dir City of Ashland State of Oregon ) ) ss: ) County of Jackson Sworn to and subscribed before me by Michael R. Faught this 19th day of March, 2010. ~11!f1 (}." C:;/fJ1'//II'-- Notary . My Commission Expires: '1 -/:5 -iI . OFFICIAL SEAL NANCY E. SLOCUM . , NOTARY PUBUC.QREGON ......- COMMISSION NO, 421357 MY COMMISSION EXPIRES SfPT. 18, 2011 G:\pub-wrks\eng\FERC\Current EAP\201 0-03-15 EAP Update.doc Page 2 of 19 WATER FILTER PLANT . GREG HUNTER-MANAGER FIRE DEPARTMENT NOTIFICATI ~, WORK: 541-488-5345 JOHN KARNS-CHIEF POLICE DEPARTMENT CITY OF AS HOME 541 826-2033 WORK: 541/482-2770 TERRY HOLDERNESS- HOSLER D CELL: 541-941-0859 OR 261-2093 541-552-2217 CHIEF - DUTY OPERATOR HOME/CELL: 805-402-4928 WORK-541-488-2211 evised 3/2010 "41-~41-0RflO CAPTAINS DESK 541-552-2288 HOME: 541-488"1652 CELL: 541-951-0313 . ACTIVATE SIREN I I PUBLIC WORKS DEPARTMENT ASHLAND COMMUNITY HOSPITAL JACKSON COUNTY MIKE FAUGHT-DIRECTOR 541/201-4000 EMERGENCY SERVICES NATIONAL W 541/488-5587 or 541/552-2411 SUSAN MONTGOMERY , MANAGER SERVICE HOME/CELL: 541-499-9458 541/201-4009 WORK: 541/774-6821 541 f773-1 067 or or and or 541-773-15 PIETER SMEENK - ENGINEER MARK MARCHETTI-CEO SOUTHERN OREGON REGIONAL 541/488-5347 or 541/552-2413 WORK: 541/201-4003 COMMUNICATION CENTER HOME: 482-2588 AFTER HOURS ASK FOR MARGIE PUCKETT- DIRECTOR CELL: 326-1039 SUPERVISOR WORK: 541/776-7206 ..................... - - DOWNSTRE ENFORCEM EMERGENC SERVICES I . Talent Police ------------------------------- -----------.. --------------- ---- ----------------------------------- I EAP-1 .~ ~ FAILURE IS IMMINENT OR HAS OCCURRED R . I : PW OPERATIONS I TERRY ELLIS-SUPERINTENDENT I I WORK: 541/488-5353 : HOME/CELL: 541/326-2621 I I I '---------------------1-------- .- : CITY ADMINISTRATOR I MARTHA BENNETT : WORK: 541/488-6002 : HOME: 541/482-0687 : CELL: 541/490-7864 I I I I I I I I I I I I .-'---------------------______1 1- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _I . PARKS DEPARTMENT ODOT ASHLAND HELMAN ELEMENTARY WASTEWATER TREATMENT DON ROBERTSON -DIRECTOR MAINTENANCE SECTION SUSAN HOLLINGSWORTH PLANT WORK: 541/488-5340 541/482-4344 -PRINCIPAL DAVID GIES-SUPERVISOR HOME: 541/690-1295 24 HOUR DISPATCH WORK 541/482~5620 WORK: 541/488-5348 CELL: 541/261-7954 541/858-3103 HOME: 541/499-7136 CELL-541/951-0325 Emergency Operations Center - 541/488-5338 If the information listed on this flowchart has changed, please contact the Public Works Department at 541/488-5587, G:\pub.wrks\eng\10-04 Hosler Dam Comprehensive Plan\Eng\EAP\2010-03-29 EAP.doc Page 3 of 19 ON FLOWCHART HLAND, OREGON AM FERC 1107 EATHER 25 ..................~ AM LAW ENT& Y NCLUDING: Department Fire District No.5 Jackson Co Sheriff Oregon State Police ~....................................... ................................... FERC-PORTLAND EDWARD PEREZ WORK: 503/552-2750 CELL: 503/706-8237 Home: 503/285-1381 or PATRICK REGAN WORK: 503-552-2741 HOME: 503-292-1915 CELL: 503-706-8733 .................................... NOTIFICATION FLOWCHART CITY OF ASHLAND OREGON C 1107 I EAP-2 I POTENTIAL HAZARD IS DEVELOPING , rA' WATER FILTER PLANT PUBLIC WORKS DEPARTMENT HOSLER DAM FER GREG HUNTER-MANAGER NEED REVIEW OF MIKE FAUGHT-DIRECTOR WORK: 541-488-5345 SITUATION BY WORK: 541/488-5587 or 541/552-2411 HOME 541 826-2033 PUBLIC WORKS HOME/CELL: 541-499-9458 Revised 3/2010 CELL: 541-941-0859 OR 261-2093 DIRECTOR OR Or PIETER SMEENK - ENGINEER WATER QUALITY DUTY OPERATOR SUPERVISOR 541/488-5347 OR 541-552-2413 541-941-0860 CELL: 541/326-1039 I ..........1 PW OPERATIONS POLICE DEPARTMENT " ELECTRIC DEPARTMENT CITY ADMINISTRATOR' FERC- - FIRE DEPARTMENT TERRY ELLlS- TERRY HOLDERNESS-CHIEF JOHN KARNS-CHIEF SCOTT JOHNSON MARTHA BENNETT EDWA -SUPERINTENDENT WORK-541/488-2211 WORK: 541/482-2770 INTERIM DIRECTOR WORK: 541/488-6002 WORK: WORK: 541/488-5353 HOME-541/488-1652 541-552-2217 WORK: 541/488-5357 HOME: 541/482-0687 CELL: 5 or 541/552-2325 CELL-541/951-0313 HOME/CELL: 805-402-4928 HOME:541 /535-7719 or CELL: 541/490-7864 HOME: CELL: 541/951-0335 OR 911 DISPATCH CAPTAINS DESK 541-552-2288 CELL 541/951-0307 OR Or HOME CELL: 541/326-2621 DAVE TYGERSON PATRI 541/488-5357 OR 541/951-0387 . WORK: HOME: 541/890-6215 : HOME: : CELL: . . . - . ............ - ---------------~-~-------------------- r------------- ------------------ .______l___________________________________, : NATIONAL WEATHER SERVICE , ASHLAND COMMUNITY HOSPITAL_541/201-4000 , :JACKSON CO. EMERGENCY SERVICES ' , 541/773-1067 , I MICHAEL CURRY-MANAGER : SUSAN MONTGOMERY 541/201-4009 , I , or 541n73-1525 , :WORK: 541/774-6821 : MARK MARCHETTI- CEO I , :and WORK: 541/201-4003 I I I , I I AFTER HOURS ASK FOR SUPERVISOR . --------------------------______1 : SOUTHERN OREGON REGIONAL COMMUNICATION , , :CENTER , , , ' MARGIE PUCKETT-DIRECTOR , --------------------------------------- , I I WORK: 541n76-7206 , . , I______----------------------------------~- . , ............. ~ DOWN PARKS DEPT, ODOT ASHLAND MAINTENANCE HELMAN ELEMENTARY WASTEWATER TREATMENT : ENFOR DON ROBERTSON SECTION SUSAN HOLLINGSWORTH PLANT : EM ERG -DIRECTOR 541/482-4344 -PRINCIPAL DAVID GIES-SUPERVISOR : SERVIC : Talent P WORK: 541/488-5340 24 HOUR DISPATCH WORK 541/482-5620 WORK: 541/488-5348 : Fire Dist HOME: 541/690-1295 541/858-3103 HOME: 541/499-7136 : Jackson CELL: 541/261-7954 CELL -541/951-0325 ~ Oregon . ............. . ......................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......................... PORTLAND RD PEREZ 503-552-2750 03-706-8237 503-285-1381 CK REGAN 503/552-2741 503/292-1915 503n06-8733 . ~....................., . . . . . . . . . . . . . . . . . . . ........................ Emergency Operations Center - 541/488-5338 If the information listed on this flowchart has changed, please contact the Public Works Department at 541/488-5587. G:\oub-wrks\ena\10.04 Hosler Dam Comprehensive Plan\Ena\EAP\2010-03-29 EAP.doc STREAM LAW CEMENT & ENCY ES INCLUDING: olice Department rict No.5 Co Sheriff State Police . . . . EMERGENCY ACTION PLAN HOSLER DAM . PROJECT NO. 1107 - OREGON I. Notification Flow Charts A. Failure is Imminent or Has Occurred 6, Potential Hazard is Developing The attached flow charts provide a detailed process of notification for either dam failure/imminent failure or a possible hazardous situation developing, The flow charts detail names, titles, and phone numbers of those who are responsible for notification from the individual observer to the responsible agency representatives, These flow charts also denote the relative priorities of the notification, C. Posting of Flow Charts The EAP has been distributed to all key supervisory and operational employees, as well as those personnel listed on the flow chart, The flow chart is easily identified in the EAP, The Plan itself is located in a prominent site near the telephone and radio transmitter at the Water Filter Plant, the closest site to the dam and with the responsible party that oversees the facility. The EAP is readily available to appropriate plant operators and the City's pDlice and emergency (911) dispatch center personnel. II. Statement of Purpose The primary purpose of this Emergency Action Plan (EAP) is to safeguard lives and reduce damage in the unlikely event of catastrophic failure of Hosler Dam within the Ashland Creek Watershed. This EAP, in total, is one specific section of the City of Ashland's Emergency Action Plan, which identifies all types of emergency procedures for the City, This EAP specifically defines the respDnsibilities and notification procedures in the unlikely event of dam failure or potential hazard involving the dam. The EAP is designed to promulgate the Federal Emergency Regulatory Commission's regulations and guidelines for emergency procedures. This plan may also be used in the event of significant flooding and overtopping of the dam under extreme flooding conditions along Ashland Creek, III. Project Description . Hosler Dam is a concrete arch dam constructed in 1928 in the Ashland Watershed canyon, Hosler Dam, also known as Reeder Gulch, is owned and operated by the City of Ashland, Department of Public Works, Hosler Dam is 118 feet high and impounds approximately 800 acre-feet of water behind the dam (normal spillway crest) in what is commonly referred to as Reeder Reservoir, It is situated on Ashland Creek in the southwestern part of the State of Oregon, three miles south of the City of Ashland and approximately 200 miles south of Salem, Oregon. It impounds water from both the east and west forks of Ashla nd Creek which have small concrete diversion dam structures on each fork. There are no major streams or other reservoirs upstream from Hosler Dam, G:lpub-wrkslengI10-04 Hosler Oam Comprehensive PlanIEng\EAP\2010-03-29 EAP.doc Page 5 of 19 The City's Department of Electric Utility operates a power generation plant about 3f4 of a mile . downstream of the dam, and the Public Works Department operates the City's Water Treatment Plant immediately downstream of the power plant. A newly replaced 24-inch ductile iron transmission pipeline (penstock) supplies water from the reservoir behind the dam to the water filtration plant through the power generation plant. Downstream, Ashland Creek travels through the northern end of the City of Ashland until the confluence with Bear Creek at 4,8 miles downstream of the Dam. Bear Creek travels within Jackson County, north through the cities of Talent (approximately 3 miles downstream of the confluence of Ashland and Bear Creeks), Phoenix (approximately 4 miles downstream of Talent), Medford (approximately 5 miles downstream of Phoenix), and into the Rogue River (approximately 7 miles downstream of Medford). The inundation maps include the inundation area through the Ashland Watershed to the City of Phoenix, IV. Emergency Detection, Evaluation and Classification A, Measures for Detection Timely and reliable detection of a potential or imminent dam failure is the key to downstream notification and safety, As discussed under. specific responsibilities later in this document, current detection measures include visual monitoring of the dam, water levels behind the dam, SCADA system notification (telemetry) if the water levels behind the dam rise or fall within very short periods of time, and creek flow monitoring, The majority of our monitoring data includes visual as well as instrument recording devises. The dam is monitored through telemetry and notifications are through an auto-dialer to Water Treatment Plant personnel. These procedures are detailed in . other sections. In addition to the above-cited detection measures, the City has installed additional instrumentation for detection as part of a new automated emergency warning system, Along with the sensor arrays, a day-night camera will be installed at one of the dam transceivers. A picture of the dam will be available on video monitors installed at both the Water Treatment Plant and the Fire Station on demand at each location to allow instantaneous visual verification of existing conditions. Audible alarms will be sounded in the event of imminent failure which is described in Section IV, C. Emergency Classification and in Section VI, Notification Procedures. B. Provisions for Evaluation The dam is approximately 1.2 miles above the Water Treatment Plant. As such the current initial method for evaluation of potential problems is direct visual observations and telemetry warnings, In addition, a new day-night camera is planned to be installed as part of the water line replacement project and will provide a means for instantaneous remote visual observation, Other than in times of sudden failure, plant personnel, the Public Works Director and experts in dam evaluation would observe the dam to evaluate concerns and potential hazards, The City has used consultants in the past and could also call upon FERC or the US Corps of Engineers to provide assistance in evaluating a potential dam failure, In the absence of the ability to physically observe the dam through vehicle or foot access, helicopter assistance would be available, As . G:\pub-wrks\eng\10-04 Hosler Dam Comprehensive Plan\Eng\EAP\2010-03-29 EAP.doc Page 6 of 19 . . . earlier described, the Ashland Watershed between the Water Treatment Plant / Power Generation Plant and the dam is through a steep canyon, Extremely high water levels would not allow physical access for observation, C. Emergency Classification The City of Ashland has chosen two basic dassifications for emergency action: 1. Failure is Imminent or Has Occurred: In this situation, the warning time frame is significantly diminished. In essence, time has run out and corrective measures to eliminate dam failure would have been exhausted. The EAP-l notification chart would be activated and evacuation procedures would immediately begin, If failure occurs, inundation through to the City center has been calculated to be approximately 8 to 10 minutes. Therefore, the City has installed a new emergency warning system with audible alarms. The water level sensor arrays installed at the dam would send signals through transceivers which would be received at both the Water Treatment Plant and the Ashland Are Station, The control logic from the sensing arrays would provide a short preset time delay (i,e" in the range of 15 to 60 seconds as determined by the City after testing) to allow a quick review of the picture from the remote camera before the audible alann is given, Although unlikely, if this classification has been activated and the dam has not or does not . fail, the Public Works Director has the ability to move into the "Potential Hazard" classification and continue with the longer term notification, evaluation and update process, 2. Potential Hazard is Develooina: Because of the daily inspections of the dam, this situation would allow time to notify and gain better understanding of a potential hazardous situation, Under this classification, there should be time to evaluate cOlTective actions and plan for either corrections or ultimate failure. Reporting procedures will be followed and periodic updates to the situation will allow transition to the "Failure is Imminent" mode as necessary, This classification would also be used for significant flooding and notification procedures. For both classifications there is an initial response and notification procedure as described in the notification flow charts and in the responsibilities sections below. G:\pub-wrks\eng\10-~4 Hosler Dam Comprehensive PlanlEngIEAPI2010-03-29 EAP.doc Page 7 of 19 V. General Responsibilities under the Emergency Action Plan A, Licensee Responsibilities . The Water Treatment Plant Operations Division of the Ashland Public Works Department is responsible for maintenance and operations of Hosler Dam and Reeder Reservoir, As such, the Water Treatment Plant Manager and the plant operators are responsible for major decisions relating to emergency situations. Because of the location of the Water Treatment Plant on Ashland Creek below Hosler Dam, the Water Treatment Plant operators are uniquely situated to observe any changes of flow in Ashland Creek, which might indicate a problem or emergency situation at the dam. The Plant Operators have daily responsibilities that include observations of the dam and recordings of the water elevations behind the dam face, The first line supervisors and treatment plant operators are the key personnel who are generally responsible under the Emergency Action Plan. These personnel have been advised of the importance of the Plan and why it is necessary, They are also exercised annually on the proper communications lines, secondary communications and how to apply proper notification procedures under this EAP. B. Responsibility for Notification The Water Treatment Plant operators have primary responsibility for notification of dam failures or any significant changes in the water level behind the dam as shown in the EAP, Their activities are logged in daily operations logs at the Water Treatment Plant. Plant personnel duties include knowing the location of the Plan, thorough study and knowledge of the Plan's content, participation with other key personnel in study sessions of the Plan elements, and participation in review and test sessions of emergency communication and notification . procedures, Actions the operators take after completing notification responsibilities depend upon the specific situation, There are not certain sequences predicted for opening or closing of valves or gates and decisions will be made based upon the immediate situation, If there is any doubt as to the actions to be taken, the next level of supervisors (Water Treatment Plant Manager or Public Works Superintendent) is empowered to make the decision or gain additional expertise to make such a decision. The chain of command and notification procedures are shown on the Notification Flow Charts. Public Works key personnel, as indicated Dn the Notification Flow Charts, will keep local authorities advised of conditions at the dam by use of telephone, radio and/or personal contact, as appropriate or as available. The National Weather Service will be utilized to enhance flood warning information. Jackson County, through the Southern Oregon Regional Communications Center, will be the clearinghouse and the Jackson County Emergency Operations Center will have additional coordination responsibilities for all emergency activities throughout the County. C. Responsibility for Evacuation Should evacuation be required, the City's Emergency Management Plan will be enforced. The Incident Commander (in this case, most likely the Public Works Director) will advise the 911 Emergency Dispatch and evacuation procedures will begin. As a result of the updated inundation maps (2000) and with accurate aerial photography (1998) the City now has very detailed . G:\pub-wrks\eng\10-04 Hosler Dam Comprehensive Plan\EngIEAP\2010-03-29 EAP.doc Page 8 of 19 . . . mapping available and evacuation routes, water levels and other pertinent information available for emergency situations. D. Responsibility for Termination and Follow-Up Termination of the emergency will be at the discretion and direction of the City's Incident Commander (in this case, most likely the Public Works Director). Follow-up procedures for the dam are the responsibility of the Public Works Director, Any necessary changes to the EAP or other emergency procedures will be recommended at any level, through the Public Works Director for inclusion in the Plans, E. EAP Coordination Responsibility The designated EAP coordinator, who is responsible for related activities including, but not limited to preparing revisions to the EAP, coordinating EAP tests, etc, is Michael R. Faught, Public Works Director, direct 541/552-2411 or through clerical staff assistance at 541/488-5587. Greg Hunter, Water Filter Plant Manager, 541/488-5345 is responsible for the surveillance and observations at the dam and for establishing training exercises for plant operators. G:\pub-wrl<slOngll0-04 Hosler Dam Comprehensive PlanIEngIEAP\2010-03-29 EAP.doc Page 9 of 19 V. Notification Procedures - General The water filtration plant is located on Ashland Creek a short distance below the dam. The level . of water behind the dam is monitored by telemetry, as well as daily visual observation of the level of Ashland Creek. Operators man the Water Treatment Plant ten hours a day throughout the year. In addition to the manned work hours, the on-call operator has a phone and is required to respond to plant emergencies 24-hours a day while on duty, There are alarms on the dam that notify the on-call operator by phone alarm if any abnormal rise in water level is observed, These alarms are tied into the lap top computer so that the operators can observe any area of concern and monitor flow measurements, Any abnormal rise in creek flow or drop in dam level that is observed over a period of less than one hour will be observed by the plant operator and the plant operator will alert the Public Works Director, Public Works Superintendent, or water emergency duty person of any abnormality. The plant operator and/or the notified person(s) will then physically check the cause of the rising water, If there is true indication of abnormal conditions, notification procedures will be followed. There will be no problem with public safety in the event that either the East or West Fork diversion dam should fail. These reservoirs contain a small amount of water, which would only cause a small wave in Reeder Reservoir. In the event that Reeder Reservoir is full, there would be no problem at the spill\^iay or in the creek channel due to either of these small diversion structure failures, The notification procedure will follow the sequence noted on the Flow Charts, The first line.of communication will be the telephone (line or through cellular phones depending on the availability), followed by radio communication on the City's Public Works communications frequency, followed by personal contact, if necessary. The emergency dispatch monitors all Public . Works radio frequencies and can communicate on that frequencY as well. In the case of sudden dam failure, direct notification of all immediately affected downstream persons and businesses within the limits of inundation may not be possible because of the lack of available warning time, In this situation, and if there is complete dam failure, the flood-wave would reach the City center (the Plaza) in a time period calculated to be approximately 8 to 10 minutes, Therefore, the City has installed an automated audible emergency warning system which relies on independent transceivers and will operate without reliance on the existing telephone system which is vulnerable to failure during catastrophic events, The new sensor array described in Section IV, Emergency Detection, Evaluation and Classification will transmit an alarm signal simultaneously to the Water Treatment Plant and the Fire Station, The operator at the plant or the police dispatcher will have 15 to 60 seconds (as determined by the City after testing) to visually verify failure on the video monitor which receives a signal from the day-night camera at the dam, If the operator or fire dispatcher does not take action to terminate the alarm signal by pushing a button within the period of the preset time delay, an audible alarm will automatically be made to the general public, The audible alarms will consist of four warning stations distributed along the edge of the inundated area within City limits, Each warning station consists of four 144 db 311 Hz air powered horns mounted on 20-foot high towers, The horns are powered from 2200 psi, 125 pound air bottles and will be controlled to give a distinct intermittent sound. These horns will have a range of about 1/3 of a mile under . G:lpub-wrl<sleng\10-Q4 Hosler Dam Comprehensive PlanIEngIEAP\2010-03-29 EAP.doc Page 10 of 19 . . . adverse weather conditions and over 2/3 of a mile under good conditions (above background noise level of 80 db). A. PROPOSED ACTION "FAILURE IS IMMINENT OR HAS OCCURRED" NO WARNING PROVIDED EAP-l Water Filter Plant Manager or Operator on duty will contact Fire Chief via telephone, (911), or radio and evacuate the premises to higher ground. "This is the Ashland Water Treatment Plant Operator. I have received or observed indications that Hosler Dam has or is in immediate danger of failing. I need your help to initiate emergency procedures as outlined in the Emergency Action Plan and the City's Emergency Operations Plan. You need to initiate notification procedures shown on flow chart 'EAP- 1 Failure is Imminent or has Occurred: NOW! I am evacuating the area and will contact you when I am safe:' The Fire Chief will take the following action: 1. If possible, determine whether the dam has failed and verify any other pertinent information if possible. Manually sound the audible alarm system and initiate any other available notification procedures to rapidly warn the public of imminent failure. 2. Notify the Chief of Police via telephone, (911), or radio and pass on pertinent infomation. Since the City Hall would undoubtedly be damaged or inundated, the Ashland Police Department will take charge of all notifications and communications, Inundation map indicates a time calculated to be approximately 8 to 10 minutes for peak flood wave to reach City Hall. The Chief of Police will take the following action: 2. Determine if City Hall is still in operation either through phone calls (see 4A below) or visibly driving to the Plaza area and observing the building and the creek. 3. Notify Pl!blic Works Director Mike Faught at 552-2411, 488-5587, or 499-9458 who will notify the following individuals: - City Administrator Martha Bennett at 488-6002,482-0687 or 490-7864 - Fire Chief John Karns at 482-2770, 541-708-0015r or 805-402-4928 - Interim Electric Utility Director Scott Johnson at 541/535-7719, 541/951-0307, 488-5308 - Public Works Superintendent Terry Ellis 552-2325, 951-0335, or 326-2621 Persons listed above will then notify other agency in accordance with notification flow chart EAP-1. 4. Notify the following outside agencies: G:\pub-wrKslengI10-04 Hosler Dam Comprehensive PlanIEngIEAP\2010-03-29 EAP.doc Page 11 of 19 " ,. The National Weather Service (773-1067 or 773-1525), ,. The Ashland Community Hospital (201-4000 or 201-4003) ,. Southern Oregon Regional Communications Center, (776-7206) ,. The Jackson County Emergency Services Manager (774-6821), requesting that all. affected emergency services downstream from Ashland be notified. . 6. In accordance with the City of Ashland's Emergency Management Plan, a Command Operations Center and Information Officer will be established at the Ashland Civic Center, 1175 E. Main Street - or other location if required. The Incident Commander should be at 541/488-5358. NOTE: Attached to this Emergency Action Plan are acknowledgements of involvement of other affected agencies. B. PROPOSED ACTION "POTENTIAL HAZARD IS DEVELOPING" EAP-2 If there is anv Drior indication that Hosler Dam is going to fail or that there are unknowns in which further assessment is necessary, the Water Treatment Plant Manager or Operator on duty shall contact the following personnel by telephone or radio: Notify Public Works Director Mike Faught at 552-2411,488-5587, or 499-9458, who will notify the following individuals: , - City Administrator Martha Bennett at 488-6002, 482-0687 or 490-7864 . - Fire Chief John Karns at 482-2770, 541-708-0015, or 805-402-4928 - Interim Electric Utility Director Scott Johnson at 541/535-7719, 541/951-0307, 488-5308 - Public Works Superintendent Terry Ellis 552-2325, 951-0335, or 326-2621 Persons listed above will then notify other agency in accordance with notification flow chart EAP -2. The Treatment Plant Manager or Operator on duty will state: "This is the Ashland Water Treatment Plant Operator. I have received or observed indications that Hosler Dam may be experiencing problems with over topping or that a hazardous situation is developing. I need your help to initiate evaluation and possible notification procedures as outlined in the Emergency Action Plan and the City's Emergency Operations Plan. You need to initiate notification procedures shown on flow chart 'EAP- 2 Potential Hazard is Developing.' I am securing the plant and will evacuate the area. I will contact you when I am safe" . 1. City personnel at the Water Filtration Plant will secure the plant to the best of their abilities without endangering themselves, and evacuate the area for higher ground. Once at a safe location, the operator will provide a full assessment to the Public Works Director . as soon as time allows, , . G:\pub-wrks\eng\10-04 Hosler Dam Comprehensive Plan\EngIEAP\2010-D3-29 EAP.doc Page 12,of19 . 2, After assessment of the situation and if there is determination that the dam may fail or in danger of significant hazard developing, the Public Works Director will immediately contact the Police Department by telephone (911) and/or radio. 3. The Public Works Director, City Administrator, Police Department and Public Works Superintendent will begin notifications of other agencies as per the notification flow chart on page EAP-2, NOTE: In addition to the above notifications, the Public Works Director or Public Works Superintendent will determine if it would be prudent to lower the water level in the reservoir. If such determination is made, this information will be given to all agencies notified so that appropriate action can be taken by those agencies as water levels in Ashland Creek could be rising and downstream areas could be affected, VI. Preparedness and Preventative Actions A. General Provisions for Surveillance . The dam is unmanned and located on Ashland Creek approximately one (1) mile above the water filter plant. The level of water behind the dam is monitored by telemetry, as well as daily visual observation, Water levels will be monitored by sensor array as part of the automated emergency audible warning system. The level of Ashland Creek is visibly monitored daily and flow gages are checked routinely, A day-night camera will be installed in the future to provide an instantaneous picture of the dam automatically and/or on demand on video monitors installed at the Water Treatment (Filter) Plant and at the Fire Station. The Water Treatment Plant has operators on duty at the plant 10 hours a day seven days a week throughout the year. There is an operator on-call at all other times, There are alarms on the dam that notify the on-call operator by phone alarm if any abnormal rise in water level is observed, In addition to monitoring at the water filter plant, the dam site is visited daily by the Water Treatment Plant Manager or Operator on duty. The frequency of surveillance of the dam by these personnel is increased during inclement weather or other critical times, B, Surveillance at Remotely Controlled or Unattended Dams The dam level is monitored by computer at the water filtration plant. Should the level of the dam increase or decrease rapidly, (e,g, three feet in five minutes), an audible alarm is activated at the Water Treatment Plant. During that part of the day when the water filter plant is unmanned, all alarms are relayed to the Duty Operator by means of an auto-dialer. The Duty Operator carries a cellular telephone that is dedicated for this purpose, The duty operator can monitor the alarms on the laptop computer system as all are tied together in the SCADA system, In the event that the headwater or the tail-water alarm is activated while the filtration plant is manned, the operator on duty shall, before initiating the Emergency Action Plan, determine visually whether a problem exists or not. This includes observation of the video monitor which displays a real-time picture of the dam, observation of the water level on the creek, and observation of the dam itself. This is to rule out the possibility of a false alarm, The operator will check the Hosler Dam level readout and the tail-water level readout in the telemetry headquarters panel, to see if there has been any significant drop in the level of the dam, or increase in the level . in the creek running through the plant for any significant increases in stream level or stream flow, G:\pub-wrkslengl10-04 Hosler Dam Comprehensive PlanIEngIEAPI2010-03-29 EAP.doc Page 13 of 19 If there are no significant decreases in dam level or increases in stream level, the alarm will be judged as a false alarm and the operator will resume normal work duties, Should there be a significant decrease (3 feet) in the level of Hosler Dam and a significant increase in the level (2 feet) of the creek running through the plant, the operator will immediately initiate the Emergency Action Plan, Notification Flowcharts: FAILURE IMMINENT or HAS OCCURRED. Once this has been done, the operator will evacuate the premises for higher ground. . If the Duty Operator receives an alarm from the water filtration plant while it is unmanned, they will dispatch immediately to the filtration plant. This person can be at the entrance to the watershed, where the water filtration plant and dam are located, in is minutes or less, Before arriving at that point, this person will check Ashland Creek as that individual is driving the vehicle up Winburn Way, then Granite Street, looking for significant increases in flow and level of the creek, If none is observed, this person will proceed on to the water filtration plant. Once there, checks of the Hosler Dam level and the tail-water level will be made. If the dam level history does not show any significant decrease (3 feet), and the tail-water level readout has not increased significantly (2 feet), and the stream flow and the level of Ashland Creek has not increased significantly by physical inspection, the alarm will be judged as a false alarm, The Duty Operator will then return home, However, should the duty person observe significant increases in the flow and level of Ashland Creek and decreased level of Hosler Dam, the Police Dispatch Center will be informed at once, to initiate the Emergency Action Plan, Notification Flowchart, Condition: FAILURE IMMINENT or HAS OCCURRED, Duty personnel will evacuate to a safe area. Once safe, the duty person will provide a full detailed report to the Public Works Superintendent and/or Public Works Director, . Once confirmation that the alarm is valid and activation of the Emergency Action Plan has begun, the Fire Department will begin evacuating residents from the inundation zone. The automated emergency public alarm system may have already sounded if failure of the dam has occurred. C. Response During Periods of Darkness As previously discussed, there are on-duty personnel available 24 hours a day. Although there is no electric service at the dam site, illumination is available through the use of portable generators, owned and operated by the Water Quality Division. This is emergency equipment and is available at all times, day and night, for emergencies and when necessary. Other personnel can be called to assist. Response time is quite short since the on-duty person has a City vehicle and radio / paging equipment available at all times and is required to maintain a 20-minute response time, D, Response During Periods of Adverse Weather Access to the dam is generally by an unimproved, but well maintained road, In adverse weather, four-wheel drive vehicles or other equipment can access the dam. In the case where the road might be flooded or washed out, the dam is accessible by foot by way of a fire trail. Travel time by foot is generally less than 30 minutes to reach the dam face from the water treatment plant. E, Availability and Use of Alternative Systems of Communications . G:\pub-wrks\engI10-04 Hosler Dam Comprehensive PlanlEng\EAPl201 0-03-29 EAP.doc Page 14 of 19 . . . The Water Quality Division has radio equipment in all vehicles and also has a number of portable transceivers (radios) available, This radio equipment is available for use at the dam at any time, and in many cases is the most reliable means of communication in the canyon. F, Emergency Supplies and Resources The City of Ashland is well supplied with manpower, equipment and materials for use in emergency situations. In addition, the Water Quality Division can call upon other divisions of the Public Works Department as well as other departments of the City, The City also maintains a list . of contract suppliers for both equipment and emergency supplies not generally maintained by the City, but used during emergency situations, In additional to supplies and equipment, the City maintains a list of available resources and professional contacts for assistance in case of emergencies, G. Other Concerns and Actions Water flow into the reservoir is from natural runoff and cannot be completely managed, coordinated or manipulated. The reservoir water surface could be lowered by use of the three valved outlets, Since this reservoir is the sole source of the City's water supply, it is critical that the water level not be lowered except in the case impending disaster. Because of this, operators would not make this decision on their own, but would act only on instruction from their supervisors, who in turn would only act on orders from the responsible person in charge, such as the Public Works Director or in her absence, the City Administrator. There are no actions which can be taken to reduce inflow to the reservoir since there are no upstream dams or control structures. Actions could be taken to alter downstream flows by regulating the outflow of the reservoir by use of existing valves. Such action would be based upon a timely evaluation of the situation and a decision by any of the Water Division supervisors. During the past sixty-eight years, the dam and reservoir system has withstood a number of emergencies such as major floods, fires, and freezing / thawing events, These emergencies were mitigated successfully by personnel and judgment of the managers of the City of Ashland. The City is thoroughly prepared to handle any anticipated emergency. It is not aware of any special concerns or actions to be taken at this time. G:\pub-wrks\eng\10-04 Hosler Dam Comprehensive Plan\EngIEAP\2010-03-29 EAP.doc Page 15 of 19 VII. Appendix Hosler Dam was constructed in 1928 in Ashland Canyon, It impounds water from both the East . and West Forks of Ashland Creek which diverts water from the 7,533 foot high Mount Ashland peak, The dam has been inspected several times in recent years by registered structural engineers and has been certified as structurally sound, The last inspection ,was by an independent structural consultant approved Hatch Acres International. The dam is founded on light-gray, medium-grained granite rock of the Ashland Pluton, The . original design and evaluations have certified hard, sound, granite with excellent bearing capacity, The dam is constructed of reinforced concrete and the foundations are sound, Earthquake activity is of low frequency and intensity especially as compared with Puget Sound area in Washington and California. With the exception of two small diversion dams, there are no dams upstream, Based upon the Report of Seismic Analysis of Hosler Dam (Harza Engineering Company, October 26, 2000) the results of the stress analysis using finite element method are all within standards and the dam.is deemed safe for future use, There are no nuclear plants within a ten-mile radius of the City's reservoir, The following action plans address both slowly developing failure and instantaneous failure, A. Plans for Posting the EAP and for Trainina, Testing and Annual Review Postina the EAP . An up-to-date copy of the Emergency Plan and flowchart / notification list is posted in a prominent location near telephone and/ or radio transmitters at the following locations: 1. The Water Treatment Plant operator's office, 2. The City Administrator's office in City Hall (20 E. Main Street). 3. The Director of Public Works office in the Community Development & Engineering Service Building, (51 Winburn Way) 4, The Water Quality Superintendent's office at the Service Center (90 N, Mountain Avenue) 5. The Director of Electric Utilities office at the Service Center (90 N. Mountain Avenue) 6. The Police Department (1175 E, Main Street) Training Training of project operators and other responsible personnel will be conducted annually during the month of November, ' Items to be covered include, but are not limited to: 1. Description and purpose of the EAP 2. Location of copies of the EAP 3, General responsibilities under the EAP 4, Notification procedure / chain of command . G:\pub-wrks\eng\10-04 Hosler Dam Comprehensive Plan\Eng\EAP\201D-03-29 EAP.doc Page 16 of 19 . . . 5, Communication systems and alternates 6. Automated Audible Emergency Warning System 7. Emergency supplies and resources 8, Dam-Break Analysis and inundation maps prepared by Harza Engineering Company Subsequent to each annual training session, a statement will be prepared which includes the date of the training, an attendance list of personnel involved, and a summary of topics discussed. A copy of the statement will be included with the annual review of the EAP, Annual Review Each year, the Director of Public Works will review all aspects of the EAP to determine any new developments or other changes downstream or elsewhere which would require any revisions to the EAP, A statement will be furnished to the FERC Regional Director annually that the EAP has been reviewed and the date it was last tested, with inclusion of any needed revision or a statement that no revisions are needed, All plan holders will be provided with dated copies of all revisions. Annual Test An annual test will be made each year during the month of November, All persons,' organizations and entities shown on the Flowchart will be contacted, The test will be to verify the following: 1. The chain of command works properly; 2, Personnel names and phone numbers are correct; and 3. The audible Public Emergency Warning System works properly, Items 1 and 2 will be conducted by telephone backed up by radio communication if necessary. Item 3 will be conducted after notification to the general public that a test of the audible warning system will be made. The duration of the audible warning will be very brief (i,e" on the order of 5 to 10 seconds) so that there will be a clear distinction between the test and an actual emergency, . The Public Works Director will determine if the test was successful and will furnish the FERC Regional Director within 30 days of the date of the test with a statement that the EAP has been tested and it will include any revisions to the plan or a statement that no revisions are needed as a result of the test. Copies of dated revisions to the EAP resulting from the test will be furnished to all persons on the EAP distribution list. B. Documentation Letters of acknowledgment from contracted agencies and documentation of the most recent consultations with Federal, State and local agencies will be forwarded to the Commission, G:lpub-wrkslengI10-04 Hosler Oam Comprehensive PlanIEnglEAP\2010-03-29 EAP.doc , Page 17 of 19 C. Inundation Maps A study and analysis of the extent of possible inundation expected upon failure of Hosler Dam was completed by Harza Engineering Company on October 26, 2000. Two required dam break analyses were completed - one for the PMF during sunny day and the second, during flood conditions. A copy of a reduced size (11" x 17'1 set of the inundation maps are enclosed, G:lpub-wrkslengI10-04 Hosler Dam Comprehensive PlanIEnglEAP\2010-03-29 EAP.doc Page 18 of 19 . . . . . . Table 2: 'Wet Weather" Dam-Break Results Cross Section Maximum Maximum Peak Arrival Peak Recession (miles downstream Elevation Incremental Discharge Time' Time' Timet" from dam) (feet) Rise (cfs) (hours) (hours) (hours) (feet) Just Below Dam 2812.7 36.3 229,000 0.01 0.08 0.4 (0.01) Water Treatment 2489.7 29.4 186,000 0.04 0.10 0.5 Plant (0.9) Southern City 2251.5 19.8 164,000 0.08 0.13 0.6 Limit (1.6) S. Pioneer Street 2030.5 16.6 143,000 0.10 0.16 0.7 Bridge (2.4) Main Street Bridge 1897.8 11.4 121,000 0.16 0.21 0.8 (3.2) Nevada Street 1761.6 10.6 94,000 0.24 0.35 0.9 Bridge (4.2) Ashland Creek 1713.1 7.3 77,000 0.34 0.44 1.3 Confluence with Bear Creek (4.8) Butler Creek Inlet 1682.0 4.7 74,000 0.50 0.63 1.7 To Bear Creek (5.8) Meyer Creek Inlet 1626.5 4.0 52,000 0.78 1.0 2.9 To Bear Creek (7.6) Talent 1575.2 2.4 49,000 1.2 1.4 3.3 (9.3) Phoenix 1494.2 1.9 46,000 1.8 2.0 3.8 (11.9) Notes: , All times are measured in hours after the initiation of the dam-break. " Recession time would be dependent on the extreme natural flooding that is assumed tD occur simultaneouslv with the dam-break. G:\pub-wrks\eng\10-04 Hosler Dam Comprehensive Plan\Eng\EAP\2010-03-29 EAP.doc Page 19 of 19 . . . Ashland South/Central Hosler Inundation Evacuation Map .~t, , ~O;n)oIOO00Daro -- - ',," Legend I_I Evacuation Zones ... ...... Evacuation Routes c=:J Inundated Lots 0....-......... streets D Barricades euifdi~ o Evacuation Slgnage :JI:IDI Urban Growth Boundary --- Streams . ~ ........... -J -J J J J. J J , t-- --- ~ Lowe Rd. ",-- - . :+_-t>........~, \.. . 'i.' ~ \. ~, " ~. " J. 'iil! -I;,;,j Evacuation '\> Center f,~, t~ ,; . ---........_+-...-.......~......... E. Vallo)' View Rd. ...................-......t t t t ,t. t~ t'iii tE t t ,................-......................-r t t t~. _1: I~!/- ---- lit - I,'" II 't'I' '\, ):\_..... , ...... ~...... . ... ...." ". ...~~'" - '.. .....,qlf..., ....~ ...... "'... ...... .'. ..., !;:;i~I~~milj:fu~miH;!!!!iiimjf,i~~~ .:::::-.:; ."'".......... Ashland North Hosler Inundation Evacuation Map ButlorLane w-~, 1~' , Alh~and .L~n. 2llI-'):D:!..:rl'lOCl1lOO -- - '- 11)/0.-. ..... ~/e$ I. . '."-" '~\ Zone 2 " Evac Route \;0,. I \\ i \,_" \' . ,"" (4: +~~,..., j ......... .."".,; :I-,Pi ~'.'>61 ;g .......... ~ ~~--'-_.- , " " . Legend '.....1 Evacuation Zones -- EvacuatIon Routes 0 Inundated lots -, St....ts " Barricades Buildings 0 Evacuation Signage XlIJ Urban Growth Boundlry StRlDImI . . . Event Tree - DeveloDina SeeDaae Condition Failure Mode Failure Mode: Increase in Seepage Through Abutment, Then Unstable Condition Develops Within Abutment, Then Unstable Condition Leads to an Overturninn Failure of the Dam "I ;(i~ Unstable Condition OeveloDs Condition Leads to Uncontrolled Release of Reservoir Load Tvpe DeveloDina Condition of Concern ~ Loss of Abutment Support Leads to Overturning Failure Progressive Slope Failure Leads to Failure of Abutment Increased Joint Pressures Overturning Failure Does Not Cause Rock MslSs Slope 00""' Instability Deterioration of Grout Curtain Rock Mass Instability Remains [No Failure) Leads to Increased Pressures in localized Rock Mass Joints Rock Mass InstabiUty Does Not [No Fai/ure} Develop Seepage leads to Deterioration of ~ Loss of Abutment Support the Groul Curtain Leads to Overturning Failure Progres~lve Movement of Rock Blocks Leads to Failure of Abutment Increased Velocity Causes Overturning Failure Does Not Hydraulic Movement of Rock A"'"' Blocks Seepage Velocity/Flow Through Block Movement Remains (No Failure) Abutment Increases localized Velocity Is Not large Enough 10 (No Failure) M.ove Key Blocks Seepage Through Abutment ~ Loss of Abutment Support Leads to Overturning Failure Progressive Slope Failure leads to Failure of Abutment Increased Joint Pressures Overturning Failure Does Not Cause Rock Mass Slope A"'"' Instability Deterioration of Joints Leads to Rock Mass Instability Remains (No Failure) Increased Pressures in Rock Localized Mass Joints Rock Mass InslabiUty Does Not (No Failure) Develop Seepage leads to Deterioration of ~ loss of Abutment Support the Rock Mass Joints Leads to Overturning Fallure Progressive Movement of Rock Blocks Leads to Failure of Abutment Increased Velocity Causes Overturning Failure Does Not Hydraulic Movement of Rock 0",", Blocks Seepage Velocity/Flow Through Block Movement Remains (No Failure) Abutment Increases Localized (No Failure) (No Failure) [No Failure) [No Failure) Velooty IS Not large Enough 10 Move Key Blocks [No Failure) Hosler Dam Developing Seepage Condition Table 3-1 Normal Operating Seepage Failure Mode Event Tree.xls Event Tree - Seismic Loadlna CondltJon Failure Mode Failure Mode: Earthquake Ground Motions Cause a Condition 0' Concern Then Unstable Condition Develops Within the Dam, Abutments, or Reservoir, Then Unstable Condition Leads to 8n Uncontrolled Release of the Reservoir ~h ke....o IioII_OamSei.micloadlngConotWon . I.!wI.Il<JII Msx.,.,.,mC'-.libleE.rtt>q~.k. Gto<.nd MolJon.Oa:~,a1Ih. SIIS l00v..r Retum Pe'lOd E.rthq""kftGtouodlJlotlonl Occur8llheSl1ft Df!veloolno Condlllon of ~ GtOllndMoUonIC"uMSlrudural _. Gr""oo Mol.mlCrtIIlt SMlingcf tno_RocIcM... Gtound MoboM L.ad Ie I SI~ StllbrIltyF.ilullcnlh.RIllhl ~- GlcundIJIcticn.CIU...SMbngor IhttAbulmentRcckM111 Gro<.nd MollonILud 10 e Slope St--"Fail....cnIheRighl ...... Unstable Condition DeveloDI Shiltin"of R""kMal. Ch.ngotlI ~Conditi",,"Thlough .~- Seep"9"Lead.lol~rc.."d P.........In R""._.Joinl. Seep.oll"VooloellyfFlow ,~~ SI"lllngolR""kM...HttlNo fNoFlliJut.] ElledonSeepegeCondiI..... SlopefailllreOamage"S.,vlce Condllll . S.",,,,.CondlldIINcIO.rTIIg.d {NoFeilur.J S""pageL.JOd.tol...,e.05ed P......u,...In RoekMa..Jolnl. Condition ll!ads to Uncontrolled Release of l!illlYJ!i! ~ O.Io.malionsLaadto DIIe<1lI,eningDuring E.lIllq....ke St'.....Re""'..WIIh'nAllowloble{NoFllilut.J u~. Inc....edJoinIP.es.u... C..... Rcck "".nSlope In.lftlllllt)' !>mg._.tv. Slope Feilure Le_loFaU...olAbulment Ove.II....ingL""d.lo"n Onnu'lngfa;lure " ;ii:~ av..Ilrft.......DoesNolL..dlO. {NoFllilut.) ,..... Lon of Abutment Suppofl LeJOd.tOOver1....T..ngF.il"'. RockM..llnlliJPilrtyeo.lNot {NoFllilure] 0."", RodM..."..'-boIIl)1RemaiM (HoF.",,) Localized av.~urn"gfeilll.eDoft NO! "". Ine....edV.locit)'Calll.1 Hydnullcr.tove_ntofRock Block. p,ogtetl"iveMovemenlolRock Bloc.. L.ad. 10 hQur. 01 ,,~ V.locdyi$Notla'yeEJ>OlllI~1o INoFeilln] Move Key Blockl Block M.....""rIlRema>'lS Localizlod 1...'....<tJOInIPrell"'.. C"u..RockMaIlSlope Inn.1lI1i1)r PJOg,...iveSiopeFailun LeodelcF.iluf.oIAbutrnent LOll olAbutmenl SlIppon Le""",IO Overtutning f.Q... O\I.~urnrngFailll'.DcnNot ""'" [NoF.utl} ~ Se....I~ConduitRuptu'.1 Ait.....'ng.nUnconrollood R.lell. Servg Conduit Don Net RUpUl LOll 01 AbtitmenI Suppofl L.JOd.loOvert"",in\lhUuo. Rod< Meso InslabililyOoe. Ncl {NcFlilurel ""'- Rod Man In.leDilAy Reman. {NoFllilureJ LllCabled CMlrIlIln"'5lfelklr.DoftNot ""'" Shiflln\lcfRockM.IICttlng.. LOll ofAbutmerrl Suppofl S"p"lI.CondillomTh.ou\lh L.lodeloo....rlurnin\lF"Uun AbUlmenl S...p.ogeV.locitylFlow 'non.,," Shilling of Rock MessH.. Nc {NcFailurej EffedcnSeepegeColKl~",M SlopeF"ilureDa~IService Cornluil ServIce Conclua Is Not o.meglod {No F.",,] . Inc......dVelocilyC.uoe. Hyd,.ulic Movemenl clR""k Bl""k. P<Oj}teI.iv. Moveme<>t 01 Rock BlockeLud.lofeit...of .~ V.loceyilNcll;1,ll"EnoughIO [HoF....j ~Key8lccl;s Block IJIcvlmtlnl Rlrnains LOC4Ilizlod CMlrtlIrnlnY Falluf. Don NO! "'~ {N<JFftJlure} ~ s.rvIceConduitRlIplu... AIIowtnganUncontrol1itd R.Ie_ Serviclo CornluitDon Not RupbJ.ft INoFeillnj (NoFIilUUlj /NoFlIiIln] fNoFlIlIure) [NoFlliIunj (No F....] Table 3-2 Seismic Failure Mode Event Tree,xls . . . . " Event Tree - Floodina Condition Failure Mode Failure Mode: Large Inflows From Storm/Snow Melt Cause a Rise in the Reservoir Level, Then Unstable Condition Develops Under the High Reservoir Level, Then Unstable Condition Leads to an Overtumin-a Failure of the Dam " ;~~ Load TvD8 DeveloDlna Condition of = Unstable Condition Oeveloos ConditIon Leads to Uncontrolled Release of Reservoir ~ Ovantreningleadatoan ovltnurlngFailure Delormlltiona Lead 10 Oventrualng IncllIlsed Water Loading Overstressing Doe. Not Lead to C,uluStructuraJ _Failure Deformations SlreS&ltsRemainwlthin (No Fa/lure} Allowable Limits ~ LonofAbulmenlSuppon L..da to Overwming FlIilullI EroalonGulli..L..dtoaLon of Abutment Support ErolionGullies Form in Rock Over1uming Feilure DOlls Nol Mall Oecur SurtaceMaterialand Erosion Gulliea Remain Nllar {NoF.ilure} V.getationis ErocI.d Surf.ce InOow Greater Than 16,714cb Overtopping Causes Erosion Erosion Gullies 00 NOI Form {NoF.ilure} (PMFEv.nl-Res.rvolrL.v.l> on the Left Abutment EL2878) Surlaca Malflrial is NOI Eroded (NoF.iJclf'e} ~ Lon of Abutmenl Support L..d.10 OvtInurningF.llure Ero.lon GulJi.. Le.d to. Lon of Abutment Support Erosion Gullies Form in Rock Overturning F8Uure Does NOI .... ,,=, Surface Materillland Erosion Gullies Remain Ne... {NoF8ilure} V.getation i. Eroded Surf.c. OvtIrtoppingC.usesEro.ion Ero$ion Gullies Do Not Form (NoF8i1ure} on the Right Abutment Surface Material is Not Etoded {NoF8i1ure} LargelnOow From SlorrtYSnow ~ Lon of Abutment Support M.n E....nt (Auumes NOI'JTlllI Full LllId.to OvtInurningF.ilure Pool, El. 2870 n,) Ero.ion Gulli..Leedtoa Lon of Abutment Support EroslOll Gullie. Fonn in Rock Ov.rturning F.ilure Does Nol .... ,,=, Surface Milteri.land Erosion Gullies R.main N.ar (NoFlilure} Vegetllionis ErocI.d Surf.c. " - Overtopping Cau.es Erosion Erosion Gullies Do Nol fOITTl fNoFailure} On the LeflAbulmenl - Surfaca Mal.rial is Nol E10ded {No Failure} ~ Lon 01 Abutment Support LllIdSloOvertumingFallure - InllowGreal.rThan l,434ct"s Erosion Gullies L.ad toa Lon (Spill\wyCapacity.R.servoir 01 AbutnMlnt Support L.vel>EL2874j ErolliOll Gulliell Fonn In Rock Overturning F.ilure Does NOl I Man """ SurfaeeMaterialand Erosion Gullies Remain Near (NoF.ilure} VegetalionisErocIed Surface Overtopping Causu Erosion Erosion Gullies Do Nol FOITTl {No Failure} on the Right Abutment {No Failure} {NoF.ilure] (No Failure} {NoF.i1ure} No Failure} Surface MaleNlls NOI Eroded {No Farlure} Table 3-3 Hosler Dam Flooding COnditlon Flooding Failure Mode Event Tree.xls ~ o ~ " . -.....:.... '\ '" iW ( ~ \ . /,~R CRm ''><. '", / .-............, / ,,"- ~- I '~ ........._-/ '.. \:-'\ -""7 ,< " ---"""--. ~.tt ,1..I':t~ 'UI ~ ~o4;t. <J.._ I oJ - -.,--. --- --- ..........-""""-.. REEDER RESERVOIR -... ),...)..... <\. 0, ~~ '"" / <J ~"- f '" ~ / / / ) / , .) \ / / \ / . ~/ / BEAR CRnK / . / t , / / / / / . LEGEND "" 8lIl00NG GENERAL NOTES: ,. CROSS S(CJIOH$ ON SHEETS 2 THRU 5 SHOw THE t.lAXNUU wAT[R LEVELS AND TRAWl flUE TO THE START Of RISE IN WATER LEVtL TRAVEL TlW( STARTS A.T THE INITIATION OF THE [W,l BRfACH. [LIVATlON ~:ruu IS YEAH SEA lEVEL THE IItAP DEPICTS A OAU BROCH DURING DRY (FAIR WEATHER) AND WET (Fl.OOO CONDITION) WEATHER. ~ .". " ii ll1 Iii tNTt.RSTlrt 5 WJOR RQIDS -----t- MINOR R(W)S o ~ ~ 8 . _ w<E/.M:./STREAII -Jilt lWl/.ESlJMlIR c=J AAfJ, or INUNOATION (FAJR WEATHER FAILURE) _ AAu. or ,NUNDATION (flOOD CONOOTlON fAllURE) 2. B[CAlJS( Of THE "ETHOD, PROCEDURES 00 ASSU"PTIONS USED TO DEVELOP THE INUNDATION AAfA THE lIulTS Of FLOOOINC SHOWN AND FlOCO WAvE TRAvtL flUES ARE APPRQXliltA.TE AND SHOUlD BE USED ONlY AS A GUIDElINE FOR ESTABLISHING EVACUATION ZONES. ACTUAl AREAS INUNDATED Will DEPEND ON CONQlTIONS DURING FM..URE ANO MAY DIFFER fROU AREAS SHOWN ON THE ~. J. RECESSION nu[s ARE O[P(NQENT ON [XTRO.l( NATURAl. ruXlOING CONOITKlNS AT THE nu( or [W,l-8R[A)(. Q $ i .'~ g j':; ~ :i e ~ ~ " : Q/. / 0...... '\ APPROXIMATE SCALE IN FEET , o 3500 7000 om fOIl BAS( ..... _ B\', M: OIY Of ASlUNO. 0ll[00N (uy 20(0) WARZA DRAWN BY: PREP'O BY: APP'O BY: SCAlE: OATE: OWG FILE: ROC Ow Ow I. = 3500' OIMAROl 17249G-OI INDEX MAP HOSLER DAM EMERGENCY ACTION PLAN CITY OF ASHLAND, OREGON SHEET 1 of 5 PROJECT No. 17249-G engineering Compan~ InG. r900 Boles Avenue, Suile K Concord, Colifornio. 94520 Tel: (925)685-6275 ro" (925)685-2380 - . t 1:1 Iii I I ~ ! :1 ~ .-~ ;;. s: j; ;;. " .ll $ ;,; - .. / -,/ \......,,/ - ..' ,/' ~.---- .# : ,. /-- : ; , . ...,----, : -....-. ........ ,. '.--................ ---_/ --... --. -., --- ---.-.-. ......,_._~----- ......,. , \ , , ! .' --- "- " '''',-- ;/ /--- --.......... ....... ....--- I~- '. .............. ~. I '''''''_ ___, . 'r' .... ~ \ I \ ..... \ 1 , \ I '. ,---/ \ '---', " \ j ',-,- J \\, " / , , /- , .' J I ,/.../ I I li.,/ /'- : ; ; ," .' / ;/ ,.' j / ,. /' ./ " , .' /' I / / /" / ..' I , ,.,/ ,/' /,' " -" / /" .- .-" /-" , / .' / -"- -- / / ./ '----' -- ,.-.... ,1..---------------.'.-.. __ ~- ,-- .... -------.'" .-" -' ~. /-- .' ----....-- .' SECTION 0,09 ~ILE , ----..---. , .' / / .// /--- .,/ ,,--'-' // --....... "'. '" --"--' -------- ..--. ...." : \, '._, .------; ~ \ \ (" r \ \ '-, " " '- '--..., \.") ) ') / ~ (,~/ ) ) , o APPROXIMATE SCALE IN FEET SECTiON 1.6 ~ILE .AIA " Il.U. ... ( ) JG.2 "",.f...) '13,"'" NIIWi~tll.({tr) 0.01 PO<< I (Ilr) 0.12 II:USSlON T tr 1.0 I lOA '''-''''' .... .., .. SECTION 0.01 WILE 1000 2000 DATA WAL It 2801.4 MAL llIS( (ft) 47.4 p(ll{ o {thl 201.000 Alll'iAltlll(hr) 0.01 ptI.lT(Ilr} 0.01 Il( T Ill' OJ DAS( ow> f'R(M((' Ilr, CIlY or A9UH0. Ol<(GON, (....y =) I-IARZA , I ! j , ; ./ I / , I -- .' , ~ -- /<., /" /' ;";~';:=:~~:../</ o' / ... " : i ! .' /-/.' .. : .-/ / ' 'i: ... . I . \ . . . , ,'" I ! i ' I ' ,.',/_,~,-";'II\\ ,,/ /' /.- .,',' ~', ,/,/ ";' ,'-_# / I. '~'- I i I (: ./ '-'___ -.-' -' ! , , , , , \ , I . \ \. ___ l \, '" ", " ", /- ..__-- \. ').\\......--".....- " j, / '\ I I t \ // "..-- / '--" /' , \, ....~. .... ,. \ ..#-...~. " o LEGEND ~ BlAlOlHC ~ IWOR ROo\OS ---t- "INOR ROo\OS ~ lAKEfRMRfSTRfAIl ~ IlAllfRl:SERV04R AREA or lNUNOAI()N = (FAIR WEATHER FAIlURE) AREA or INUNOAT()N - (n.OOO CONDITION FAIlURE) ORAWN BY: ROC INUNDA TION MAP SHEET PREP'O BY: ow APP'O BY: ow HOSLER DAM 2 of 5 SCAlE: ," = 1000' EMERGENCY ACTION PLAN DAlE: 28rE80 T CITY OF ASHLAND, OREGON PROJECT No. OWG FIlE: 17249G-02 17249.G e"gi"eerl"g Compo,,!! I"c. r900 Bates Avenue, Suite K Concord, California. 94520 101:(925)685-6275 Fo,,(925)685-238D - _....- ". , I i ! .' :~ " -. '. -- --..... - ..----- 1.:-'''\ -'_.t' '. -/ " . , ! \ , ,I / .' I , ; , ",,-"./ " -"-' / ~- \- ~ I , i .#--.... i I .' , I I ) / // / / ~ GENERAL NOTES: 1. CROSS SECTIONS ON SHEEtS 2 THRU 5 SHOW fH[ LlAXlIILftoI WATER LMLS 00 TRAVEl nu( TO THE START Of RISE IN WATER lML TRAVEl flUE STARTS AT THE IHIT"'TION Of THE [W.I BREACH. [L[VATKlH DATUM IS UEAH SEA lEVEL. THE LIAP DEPICTS A ()At.t BREACH OORINC DRY (FAIR WEATHER) ..." WET (n.aoo CONOITIOO) WEATHER. 2. 8[CAIJS[ or THE WETHOO. PROCEOURES AND ASSlNPTIOHS US[O TO DE.VElOP THE IMJNO.\TlON AAfA THE In.llTS or flOOOlNG SHOwN AND FLOOD WAVE TRAVEL TII.IES ARE .&.PPROXIW\TE ANO SHOUlD BE USED ONLY AS A GUI[)(llN[ fOR ESTABlISHING EVACUATION ZONES. ACTUAl ARfAS INUNOATED Wilt DEPEND ON CON[lTlONS DURING rAlLUR( AND I.lA.Y OIrrER rRQt.l ARrAS SHOWN ON THE lAAP. 3. RECESSION n~ES ARE OEPENDENT ON EX,R(~E NATURAl flOODING CONDITIONS A.T THE Tl~E or [W,l.8REAI<. (. (e , * .1 f ~ H 'e :;. ;,; /1; ! , ;;. 1111.6 1M 94,000 W O.J5 M -'>b,. I fZe- I LEGEND t:=:l BUILDING ~ WJOR ROADS -+- UINOR ROADS lMl:jIMR/STREAlI ~ IJAIj/RESEIrIOtR ~ INUNOATION = "'EA ~TH(R 'AlLURE) ('..R Of INUNOATION AREA CONDITION fAILURE) - (FlOOO TES' THE J.tAXll,IUU WATER GENERAL NO 'S><EETS 2 THRU 5 SOO:ISE IN wATER lML S SECTIONS ON THE START or BRfACH. 1. CROS AND TRAVH IIUE TO IN"~TION or THE IJAljDEPlCTS ^ IJAIj lM~ lIuE STAATS ^i;ESfA lML IHE ~FlOOO CONooIION) ~^T1ON OATUU ~ ~'''R WEATHER) AND WET 8REAQj DURING 0 lIONS USED TO wEATHER. llURES AND ASSUUP S><OWN Of THE UETHOO. PROC~HE 1I101ITS Of fLOOOIN~O BE 2. ~~ IHE "UNOAlION ~ "'E APPROXI.....~:~1lON ZONES. ~Ort".~ :~ 2~"~~~E~~~~~~~i ~'NC AREAS INU ROM AREAS ACIUAl O.....Y D<FFER , FlOOOlNG fAILURE AA ON EXlREUE NATURAl DEPENDENT R[CESSION TIUES AREUE Of ()Al.I-BREAK. J. CONDITIONS AT THE Tl APPROXIMATE SCALE IN 1000 , o SHEET 5 FEET , 2000 3 of PROJECT No. 17249.G ~ . t ~ .1 g j"; -? ;; .0 '" ~ '" ~ LEGEND 1:::1 BUilDING -. \AAJOR ROADS _.j "INOR ROADS - W<E/RM'R/STREAIl ~ OAlI/R!:SER'/OlR r-I AAfA Of INUNOA.TION (FAlR WEATHER FAlLURE) - AAf.A Of INUNDATION (Fl(lOO CONDITION FAlLURE) GENERAL NOTES: 1. CROSS SECTIONS ON SHEETS 2 THRU 5 SHOw THE tU.XIYUIoI WATER lMLS AND TRA'wtl TILlE TO THE STAAT OF RISE IN WATER LEVEL TRAVEl flUE STARTS AT THE INITlA.TION Of THE OAU BREACH. ElEVATION DATUu IS 1.l[AN SEA l.EVEl. THE w.p DEPICTS A [W,I BREACH DURING DRY (FAIR WEATHER) AHO WET (flOOD CONOmON) WEATHER. 2. 8[CAlJS( Of THE METHOD. PROCEDURES AND ASSUUPTION$ USED TO DEVElOP THE INUNOA.TION AAf..A. THE UUITS OF FlOODlNC SHOWN AND F1.000 WAY'[ TRAVEL Tll,l[S ARE APPROXIMATE AND SHOIA.O BE usro ONLY AS A GUlO[UN[ fOR ESTA8USHING EVACUATlON lONES. ACTUAl AREAS INUNOATED Will DEPEND ON CONDITIONS CURING fAIlURE AND UAY DIftER fROU AREAS SHOWN ON THE t.lAP. 3. RECESSION TIMES ARE DEPENO(NT ON EXTREME NATURAL rUlOOtNG CONDITIONS AT THE TI""E or [WA-BREAK. ~ ' - () --- \---../ ~' 5 .I ~ .... i1 ~ g I ~ l!l l!l ~ , I ~. SECTION 7.6 MILE FAlR !HR 1618.4 8.9 17,000 1.1 1.5 3.5 - o o DATA lI.lX. EL H lI.lX. RISE (II) PEAK Q (e1.) ARRIVAl n"E (hr) PEAK T(hr) RECESSION 1 (hr) . l _v &.S[~ fKCMOCO BY: CITY or I-IARZA e"gi"eeri"g Compo",:: I"c. f900 Bates Avenue, Suile K Concord, California. 94520 lei: (925)685-6275 Fo<:(925)685-2380 ( ~. oJ SECTION 4.8 MILE om FAIR THER ONOITI H "AX, EL II 1708.6 1713.1 lI.lX, RISE (II) 14,3 7.3 .f' PEAK 0 (cis) 51,000 77,000 ARRIVAl nWE (hr) 0.39 0.34 PEAK 1 (hr) 0.50 0.<< RECESSION 1 hr 2.1 1.3 y -_r" , ~ , \ .. I I -. ~Q ~: ",,-~ , l...." 1--'/ i ~_. / " ~-_.-., . ... \.. '" , -- ------ HVL99.. _'_ /'- ..............~ ......~-._-. ! -----.-..-..-.------.-.--...., /-- ....- ..~ , , '. -----" --..-- ~ ..- .-- --.-" ~ /- -. --'-, , \ ---''''''' ....- ;' ....._-~ flOOD C N 1626.5 4.0 52,000 0.78 1.0 2.9 SECTION 5,8 MILE FAlR !HR 1676.9 8.8 32,000 0.62 0.80 2.6 , o 2000 flOOD CONomON 1682.0 4.7 74,000 0.50 0.63 1,7 OA1A WAX. EL II WAX. RI5E (II) PEAK Q (cis) ARRIVAl nWE (hr) PEAK 1 (hr) RECESSION 1 (hr) ">c 0, . APPROXIMATE SCALE IN FEET , I . INUNDA TION MAP 1000 DRAWN BY: PREP'O BY: APP'O BY: SCAlE: DAlE: OWG FILE: ROC OW OW I" = 1000' 2BFEBOl 17249G-04 SHEET 4 of 5 PROJECT No. 17249-G HOSLER DAM EMERGENCY ACTION PLAN CITY OF ASHLAND, OREGON ~ . I l:! is 8 g ~ I E ;; ! Ii , u ~ ei ~ -? ]. $. " SECTION 9.3 MILE ./ . c(' ( ( /"", ~ ~ X-~ . '.:: \; ,/ ~ DATA lU.X. EL It lU.X. RISE (It) PEAK 0 (efs) ARRIVAl nWE (hr) PEAK T (hr) RECESSlOH T (hr) DATA WAX. EL It WAX. RISE (It) PEAK 0 (ef.) ARRIVAl nWE (hr) PEAK T(hr) RECESSION T hr o " " '. .. ,.' \' .....------. ,./ / .. ", '. ' . ~------_. ..... .-.____ I .......... "-.___" .t' ~""''''''... ,-_...." ....--.-~-.-----, /\\ ..'t...... ...---.--./// '__ / ,_,___..-. /'/ h___,\ ) , / INTrRsfA f[ 5 : -'~"'... It - ./_., ..- ~ ffl...99 \ \ \ \ C7 fAIR R 1569.4 6.0 15.000 1.7 2,1 5.5 flllOO N I N 1575.2 2.4 49.000 1.2 1.4 3.3 /~-- .____o.J"o-....,- ./ ROGur VALLry HW 99 /' /~-;:::--- v-"lLE-Y- HVI 99 ,.......-ROGUE ROGur VALLry HW' // . 99... ./ / -~ . /:/ ,---- j > ././ " LEGEND ~ (UL!>NC GENERAL NOTES: 1. CROSS SECTIONS ON SHEETS 2 THRU 5 SHOW THE Il4I.XIUlltol wAT[R lEVElS ANQ TRAVU 11Y[ 10 THE START or RISE: IN wATER lEVEL. TRAVEL Tlt.t[ STARTS AT THE tllTlATION or THE ~ BREACH. ELEVATlOH DATUll IS WEAN SEA LML THE WI' OCPlCTS A DAll IlROCH DURINC DRY ('AIR WEATHER) "'0 W(l (flOOO CON!>T"") WEATHER. /...... . I - -. ~ -. Ii.\JOR RlWIS .... . _.i "'INOR RQ.t.OS .... . - LN<E/RMR/STREAAl ~ DAlljRESERY()CR MEA Of INUNOo\TIOH C=:J ('AIR WEATHER 'AIlUR[j _ AAEA or INUNDATION (fLOOO CON!>TOO fAILURE) 2. BEC<USE or THE llffilOO. PROCEDURES >>ID ASSuuPTIONS USED TO '. DtVElOP THE INUNDATION AREA. THE uulTS Of f'LOOOlNG SHOwN AND nooo WAY'{ TRAVEL 11"'(S ARE APPROX1YATE 00 SHOUlD BE USED ONlY AS A GUlIl(lJNE fOR ESTABlISHING EVACtJAT"" 20NES. ACTUAl AREAS INUNDATED WIll DEPEND ON CONDITIONS DURING fAILURE AND MAY DIffER fROY AAOO SHOWN ON THE LL&.P. 3. RECESSION 1lUES ARt DEP[NDENT ON [XTR[I,4[ NATURAl FlOOOlNG CONDITIONS AT THE nut or OAU-aREAl<. - <:\\ . APPROXIMATE SCALE IN FEET , o 1000 2000 BASE IW' _0 BY: CITY ~ ASH>>lI). OREGON. (.illY 2fJOO) \) / \. .... I-IARZA DRAWN BY: PREP'O BY: APP'O BY: SCALE: DATE: OWG FILE: ROC OW OW l' = 1000' 28fE80 I 1 7249G-05 INUNDA rrON MAP HOSLER DAM EMERGENCY ACTION PLAN CITY OF ASHLAND, OREGON Engineering Compan!l Inc. 1900 Bates Avenue, Suite K Concord, California. 94520 Tol:(925)685-6275 Fo.:(925)685-2J80 . , - I n ~\ SHEET 5 of 5 PROJECT No, 17249.G