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HomeMy WebLinkAbout2013-037 Emergency Action Plan - Hosler Dam EMERGENCY ACTION PLAN HOSLER DAM PROJECT NO. 1107 - OREGON , WPM& CITY OF ASHLAND 20 E. MAIN STREET CITY HALL ASHLAND, OREGON 97520 Revised: April 1 1990 May 1991 January 1992 Reprinted: January 1994 June 1998 December 1998 Reprinted: November 2000 March 2001 January 2004 Reprinted: December 2005 January 2006 February 2007 March 2008 January 2009 Reprinted: March 2010 Reprinted: May 2012 Reprinted: February 2013 EMERGENCY ACTION PLAN HOSLER DAM PROJECT NO. 1107 - OREGON CONTENTS OF PLAN PAGE Verification Page 3 1. Notification Flow Charts A. Failure is Imminent or Has Occurred 5 B. Potential Hazard is Developing 7 II. Statement of Purpose 9 III. Project Description 9 IV. Emergency Detection, Evaluation & Classification A. Measure(s) for Detection 10 B. Provisions for Evaluation 10 C. Emergency Classification 11 V. General Responsibilities Under the Emergency Action Plan A. Licensee Responsibilities 13 B. Responsibility for Notification 13 C. Responsibility for Evacuation 13 D. Responsibility for Termination & Follow-Up 14 E. EAP Coordinator Responsibility 14 VI. Notification Procedures - General 15 A. Proposed Action without Warning (EAP-1) 16 B. Proposed Action with Prior Indication (EAP-2) 17 VII. Preparedness &.Preventative Actions 18 A. General Provisions for Surveillance 18 B. Surveillance at Remotely Controlled or Unattended Dams 18 C. Response During Periods of Darkness 19 D. Response During Periods of Adverse Weather 19 E. Availability & Use of Alternative Systems of Communications 19 F. Emergency Supplies & Resources 19 G. Other Concerns & Actions 20 VIII. Appendix 21 A. Plans for Posting the EAP and for Training, Testing & Annual Review 21 B. Documentation 22 C. Inundation Maps 22 G:\pub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 1 of 24 Verification Page 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. A Michael R. Faught, :Public Works Director City of''Ashland State of Oregon ) ss; County of Jackson ) Sworn to and subscribed before me by Michael R. 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Jm0 J Ov U co nF3: O UO r }O 0 r~ a pi F- m U LL Ln N V- W z w- Cl) Y m I L E ~O~CD Q L) 12 Z M~m3 0 Owe w (o o OF-=N2 2 Z f (V d N D UzU ~F-O ( r U'-00 M r p 2¢ O= V'Q F- CO LO N C E r N Zz2 CL W J C O E O M rON ~¢YY~ wwQ'rJ -0 o 1q, Q) F- Lo cj (/J ZM MOD =Um0F- pOO LO W N w c zZLLJ 000 ¢ai~~¢ UWUYU CL CC) N c o(nzv`N`LO'T YZW~g Oo ' '(D ~~F~N° o ¢00 0 `C m li y wQZLO Ln LO n ~p a) O w 3 OW wXV'JJ LU CL U) -i _j a2C Z) n~ "UU W. 0 EMERGENCY ACTION PLAN HOSLER DAM PROJECT NO. 1107 - OREGON 1. Notification Flow Charts A. Failure is Imminent or Has Occurred B. 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 provide 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 relative priorities within the notification process. Posting of Flow Charts The EAP has been distributed to all key supervisory and operational employees, as well as all personnel listed on the flow chart. The flow charts are provided in the front of the Emergency Action Plan document for easy access. A copy of the EAP can be found in a prominent location near the telephone and radio transmitter at the Water Treatment Plant, the closest site to the dam, and easily accessible to the responsible party that oversees the facility. The EAP is readily available to appropriate plant operators, responsible personnel, and the City's police and emergency (911) dispatch center. 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 responsibilities and notification procedures in the 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 Creek Watershed at Reeder Gulch. Hosler Dam, also known as the Reeder Gulch Project #1107-OR, is owned and operated by the City of Ashland, Department of Public Works. Hosler Dam is 118 feet tall 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 mffes GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 9 of 24 south of Salem, Oregon. It impounds water from both the East and West Forks of Ashland Creek, which have small concrete diversion dam structures on each fork. There are no major streams or other reservoirs upstream from Hosler Dam. The City's Electric Department operates a power generation plant about 3/4 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 treatment plant through the power generation plant. Downstream, Ashland Creek travels through the northern end of the City of Ashland to the confluence with Bear Creek 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 inspection of the dam and abutments, telemetric monitoring of water levels behind the dam, and creek flow monitoring downstream of the dam. Monitoring data includes visual and physical inspection reports, as well as records of instrument readings. The dam is monitored through telemetry (SCADA system) and notifications are routed through an auto-dialer to Water Treatment Plant personnel in the event of an alert. These procedures are detailed in the Hosler Dam Failure Warning System Design Report. In addition to the above-cited detection measures, the City plans to installadditional instrumentation for detection as part of an automated emergency warning system. Along with the sensor arrays, a day-night camera is proposed to be installed at one of the dam transceivers. A picture of the dam will be available on demand on video monitors installed at both the Water Treatment Plant and the Fire Station to allow instantaneous visual verification of existing conditions. Audible alarms will be sounded in the event of imminent failure as 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. The current method for initial evaluation of a potentially hazardous situation includes direct visual observations to confirm any telemetry warnings received. In the event of a potentially hazardous situation developing at the dam, 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 GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 10 of 24 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 earlier described, the access road connecting 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 classifications 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 have been exhausted. The EAP-1 notification procedure would be initiated 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. The water level sensor arrays installed at the dam would send signals which would be received at both the Water Treatment Plant and the Ashland Fire 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 for confirmation that it is not a false alarm before the audible sirens are activated. Although unlikely, in the event that this classification were activated and the dam does not fail (and dam failure is no longer imminent), 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 Developing_ Because of the daily inspections of the dam, this situation would allow time to notify responsible personnel and gain better understanding of a potentially hazardous situation. Under this classification there should be time to evaluate corrective 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 are initial response and notification procedures as described in the notification flow charts and in the responsibilities sections below GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 11 of 24 G:\pub-wrks\eng\10-05 FERC Dam Safety Program\EAPW Update\2013\2013-01-04 EAP revision-rbm.docxPage 12 of 24 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 Supervisor 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. Water Treatment Plant Supervisors and Operators are the key personnel who are generally responsible under the Emergency Action Plan. These personnel have been advised of the importance of the EAP and why it is necessary. They are also exercised annually on the proper communication channels, 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 documented in daily operations logs at the Water Treatment Plant. Plant personnel duties include knowing the location of the EAP document, thorough study and knowledge of its content, participation with other key personnel in study sessions of the EAP 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 Supervisor or Public Works Superintendent) is empowered to make the decision or gain additional expertise necessary 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 on 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 obtain 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 911 Emergency Dispatch and evacuation procedures will begin. With annually-updated inundation G:\pub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 13 of 24 maps and accurate aerial photography (2010) the City has detailed mapping of 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 recommended, at any level, will be channelled 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 the Public Works Director, direct 541/552-2411 or through clerical staff assistance at 541/488-5587. The Water Treatment Plant Supervisor, 541/488-5345 is responsible for the surveillance and observations at the dam and for establishing training exercises for plant operators. GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 14 of 24 VI. Notification Procedures - General The Water Treatment 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 detected. These alarms are accessible on the laptop computer so that the operators can observe any area of concern and monitor flow measurements simultaneously. Any abnormal rise in creek flow or drop in reservoir level that is measured over a period of less than one hour will be investigated 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. No threat to public safety would be anticipated in the event that either the East or West Fork diversion dam should fail. These reservoirs contain a relatively small amount of water, and an uncontrolled discharge would only cause a small wave in Reeder Reservoir. In the event that Reeder Reservoir is full, there would be no problem at the spillway or in the creek channel due to failure of either of these small diversion structures. The notification procedure will follow the sequence noted on the Flow Charts. The first line of communication will be the telephone (land line or cellular phones, depending on 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 warning time. In the event of 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 sensor array described in Section IV, Emergency Detection, Evaluation & Classification will transmit an alarm signal simultaneously to the Water Treatment Plant and the Fire Station. The operator at the plant or the fire dispatcher will have 15 to 60 seconds (as determined by the City after testing) to verify failure. If the operator o~ 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 sound to the general public. The audible alarms consist of four siren stations distributed along the edge of the inundation zone within City limits. Each 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:\pub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.dOCXPage 15 of 24 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 EAP-1 HAS OCCURRED" NO WARNING PROVIDED 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 Water Treatment Plant Operator. Initiate EAP- 1 NOW! Dam failure is imminent (or has occurred). 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 information. 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: 1. 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. 2. Notify Public Works Director at (541)552-2411, (541)488-5587, or (541)499-9458 who will notify the following individuals: - City Administrator at (541)552-2103, or (541)613-5597 - Fire Chief at (541)482-2770, (541)552-2217, (541)708-0015, or 1 (805)402-4928 - Electric Systems Distribution Manager (541)552-2307 or (541)951-0307 - Public Works Superintendent (541)552-2325, (541)951-0355, or (541)646-8822 Persons listed above will then notify outside agencies in accordance with notification flow chart EAP -1. 3. Notify the following outside agencies: > The National Weather Service (541)773-1067 or (541)773-1525, > The Ashland Community Hospital (541)201-4000 or (541)201-4003 > Jackson County Emergency Dispatch - 911 > The Jackson County Emergency Services Manager (541)774-6821, requesting that all affected emergency services downstream from Ashland be notified. GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.doexPage 16 of 24 4. 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 541/488-5338. 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 any prior 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 at (541)552-2411, (541)488-5587, or (541)499-9458, who will notify the following individuals : - City Administrator at (541)552-2103, or (541)613-5597 - Fire Chief at (541)482-2770, (541)552-2217, (541)708-0015, or 1 (805)402-4928 Electric Systems Distribution Manager at (541)552-2307, (541)227-8083 - Public Works Superintendent (541)552-2325, (541)951-0355, or (541)646-8822 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 overtopping, 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 Treatment 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. GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.doCXPage 17 of 24 2. After assessment of the situation and if there is determination that the dam may fail or is in danger of a 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. VII. Preparedness and Preventative Actions A. General Provisions for Surveillance The dam is unmanned, and is located on Ashland Creek approximately one (1) mile above the Water Treatment 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. 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 change in water level is observed. In addition to monitoring at the Water Treatment Plant, the dam site is visited daily by the Water Treatment Plant Supervisor 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 Treatment 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 Treatment 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 via the SCADA system. In the event that the headwater or the tail-water alarm is activated while the Water Treatment 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 water level on the creek and/or observation of the dam itself 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 in order to identify any significant changes in stream level or stream flow. 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 the reservoir 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. G:\pub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.doCXPage 18 of 24 If the Duty Operator receives an alarm from the Water Treatment Plant while it is unmanned, they will dispatch immediately to the plant. This person can be at the entrance to the watershed, where the Water Treatment Plant and dam are located, in 15 minutes or less. Before arriving at that point, this person will check Ashland Creek as they drive 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 Treatment Plant. Once there, checks of the reservoir level and the tail-water level will be made. If the reservoir level history does not show any significant decrease (3 feet or more), and the tail-water level readout has not increased significantly (2 feet or more), 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 Operator observe significant increases in the flow and level of Ashland Creek and decreased level of the reservoir, the Police Dispatch Center will be informed at once to initiate the Emergency Action Plan, Notification Flowchart, Condition: FAILURE IS IMMINENT or HAS OCCURRED. Duty personnel will evacuate to a safe area. Once safe, the Duty Operator will provide a full detailed report to the Public Works Superintendent and/or Public Works Director. Once confirmation is received 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 siren 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 electrical 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 short since the on-duty person has a City vehicle and radio/paging equipment available to them 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 gravel 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 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 within the City. The City also maintains a list of contract Gipub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.doCXPage 19 of 24 suppliers for both equipment and emergency supplies not generally maintained by the City, but used during emergency situations. In addition 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 the Director's absence, the City Administrator. There are no actions which can be taken to reduce inflow to the reservoir since there are no upstream 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. The City is not aware of any special concerns or actions to be taken at this time. G:\pub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.docxPage 20 of 24 VIII. 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 Hatch Acres International, an independent structural engineering consultant approved by the Federal Energy Regulatory Commission. The dam is founded on light-gray, medium-grained granite rock of the Ashland Pluton. The original design and evaluations have certified the subgrade material as hard, sound, granite with excellent bearing capacity. The dam is constructed of reinforced concrete and the foundations are sound. Earthquake activity in the area is of low frequency and intensity. With the exception of two small diversion dams, there are no structures upstream of the dam. Based upon the most recent Hosler Dam Stability Analysis prepared for the City of Ashland (URS Corporation, August 22, 2012) 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 Training, Testing and Annual Review Posting the EAP An up-to-date copy of the Emergency Action 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 at 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: 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 5. Communication systems and alternates 6. Automated Audible Emergency Warning System 7. Emergency supplies and resources 8. Dam-Break Analysis and inundation maps GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.dOCXPage 21 of 24 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 necessitate 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 listed will be provided with dated copies of all revisions. Annual Test An annual test will be made each year. 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 Federal Energy Regulatory Commission. 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 conditions ("fair weather', and the second during flood ("wet weather's conditions. A copy of a reduced size (11" x 171~ set of the inundation maps is enclosed. GApub-wrks\eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbm.dOCXPage 22 of 24 Table l: "Fair Weather" Dam-Break Results Cross Section Maximum Maximum Peak Arrival Peak Recession (miles downstream Elevation Incremental Discharge Time] Time] Timt? from dam) (feet) Rise (cfs) (minutes) (minutes) (minutes) (feet) Just Below Dam 2809.4 47.4 201,000 0.6 4.2 48 (0.01) Water Treatment 2486.3 38.3 154,000 2.4 6 54 Plant (0.9) Southern City 2248.7 30.2 133,000 4.8 7.8 60 Limit (L6) S. Pioneer Street 2028.3 24.8 118,000 7.2 9.6 78 Bridge (2.4) Main Street Bridge 1895.5 24.7 94,000 9.6 13 90 (3.2 Nevada Street 1759.4 15.4 70,000 16 22 108 Bridge (4.2) Ashland Creek 1708.6 14.3 51,000 23 30 126 Confluence with Bear Creek (4.8) Butler Creek Inlet 1676.9 8.8 32,000 37 48 156 To Bear Creek (5.8 Meyer Creek Inlet 1618.4 8.9 17,000 66 90 210 To Bear Creek (7.6) Talent 1569.4 6.0 15,000 102 126 330 9.3 Phoenix 1488.7. 5.4 13,000 168 192 360 (11.9) Notes: 1. All times are measured in minutes after the initiation of the dam-break. G:\pub-wrks1,eng\10-05 FERC Dam Safety Program\EAP\07 Update\2013\2013-01-04 EAP revision-rbrD.dOCXPage 23 of 24 Table 2: "Wet Weather" Dam-Break Results Cross Section Maximum Maximum Peak Arrival Peak Recession (miles downstream Elevation Incremental Discharge Time * 'rime * Time** from dam) (feet) Rise (efs) (min) (min) (min) (feet) Just Below Dam 2812.7 36.3 229,000 0:6 4.8 24 (0.01) Water Treatment 2489.7 29.4 186,000 2.4 6 30 Plant (0.9) Southern City 2251.5 19.8 164,000 4.8 7.8 36 Limit (1.6) S. Pioneer Street 2030.5 16.6 143,000 6 9.6 42 Bridge (2.4) Main Street Bridge 1897.8 11.4 121,000 9.6 12.6 48 (3.2) Nevada Street 1761.6 10.6 94,000 14.4 21 54 Bridge (4.2) Ashland Creek 1713.1 7.3 77,000 20.4 26.4 78 Confluence with Bear Creek (4.8) Butler Creek Inlet 1682.0 4.7 74,000 30 37.8 102 To Bear Creek (5.8) Meyer Creek Inlet 1626.5 4.0 52,000 46.8 60 174 To Bear Creek (7.6) Talent 1575.2 2.4 49,000 72 84 198 (9.3) Phoenix 1494.2 1.9 46,000 108 120 228 (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 to occur simultaneous) with the dam-break. Hosler Dam Evacuation Plan Detail Map 1 W b. Z pa X -2163690.20018 O Y 829042.551212 S h, la ~i nl Section 0.09 Mile Data Fair Weather Flood Condition Max. El. (ft) 2.486.3 2.489.7 Max. Rise( ft) 38.3 29.4 Peak 0 (cfs) 154,000, 186,000 J Arrival Time (hr) 0.04 0.04 Peak Time hr 0.1 0.1 r.,• r ~,Jrl liI 1. X -2164250 76904 Y 828632 361386 - " %y r .t I: Section 0.01 Mile Data Fair Weather Flood Condition 'Max. El (ft) 2,8094 2,812.7 } Max. Rise (ft) 47.4 36.3 t, Peak Q (cfs) 201,000 229,000 Locator Map 1 j Arrival Time (hr) 0.01 0.01 Peak Time (hr) 0.07 0.08 Legend /r - Buildings Inside Path Buildings Not in Path Streams 1. Inundation Path Fair Weather t - Flood Condition Evacuation Route Red Cross Shelters X -2164294 40658 Y 827905 349163 1 Inch = 300 feet /C M\Prol_MAP\2003 t14\_Maps\HoslerDamEvacMaps2013\Fi-RC\mxd\HoslerDamFPJacMap2013_VIew1 mxd To McNeal Hall Hosler Dam Evacuation Plan at SOU S X qs Detail Ma L V 8 63X1 3061 68.69753 yCq 2.279952 tips SOP RD C, Granite Revervoir c, F n ~T IPA Section 1.6 Mile Data Fair Weather Flood Condition Max. El. (ft) 2,248.7 2,251.5 Max. Rise (ft) 30.2 19,8 Swimming Hole Peak Q (cfs) 133,000 164,000 Arrival Time (hr) 0.06 0.08 Peak Time (hr) 0.12 0.13 a X -2163767 05241 Y 830064.542001 S O 92 F~ O X: -2163311.78969 Y 829547.62913 Locator Map j Legend - Buildings Inside Path Buildings Not in Path Streams i, + Inundation Path Fair Weather j - Flood Condition Evacuation Route Red Cross Shelters _ 7~• h 1 inch = 300 feet IiProj MAPT003='41_MapslHoslerDamEvacMaps20'31FERC~mxd',HoslerDamEvacMap20'3_View2.mr.a Hosler Dam Evacuation Plan `/STNS" Detail Map 3 To McNeal Hall W To Briscoe , at SOU Elementary School D z Q MpNTV1EW t z z G Band shell - A STRAWBERRY LN Z X -2162964.74021 Y 831705 649625 r m z Col A v m N -i Duck Pond Section 2.4 Mile Data Fair Weather Flood Condition .,1 m Max. El (ft) 2.028.3 2.030-5 f Max. Rise (ft) 24.8 166 Peak Q (cfs) 118,000 143,000 Arrival Time (hr) 0.12 0.10 V Peak Time (hr) 0.16 0.16 310 (4 • Parks Shop ~1~ Parks Office S P 340 X --,'_163508.7122 <<- Y. 8312548643 Parks Offices F ' W V a~NO4N W 369 1038, M It ago 4 cc O O v A DA 433 Locator Map aao ~ Legend T - Buildings Inside Path ~r Buildings Not in Path s3~ Streams Inundation Path oy %so Fair Weather - W Flood Condition X -2163368.69753 S, Y 830612.279952 10, Evacuation Route 5 + Red Cross Shelters 4~ N 1 inch = 300 feet +-j M Trq_MAP12003-1141-MapslHosierOamEvacMaps20131FERC1mxdlHoslerDam EvacMap2013_View3 mxo V q111111110 Hosler Dam Evacuation Plan X -216222317156 ~ O Y 832586 898177 Detail Map 4 # W HERSEY ST Parson's Pine Products,,,,, A I~ ~ LL c~~ M H 01 11o wY _ 1 Sr VAN NESS AV Vit o z Vol CENTRAL AV man Z 0 -M To McNeal Hall z a at SOU 14 V-1t Y r y N Mq/ 11~1~ O 47 B ST i Section 3.2 Mile To Briscoe y~. ^ Data IFairWeather Flood Condition Elementary Scl~ol Max El (ft) 1,895.5 1,897.81 ~y Max. Rise (ft) 24.7 114 QJ f P Peak Q (cfs) 94,000 121.000 ~h ST F Pvta SLIDE ` Arrival Time (hr) 0.16 0116 5T Peak Time (hr) 0.24 0.21 3a° WRL DODGE WY P4-V h a cy 1 Z vy Q. N ~ G 05 r ENDERS ALLEY G 4 - * O C~ONO _ Uj X -2152994 9608P rT l Y 83222192515,17 yr h HARGADINE ST ~J2 © Ln BEACH A SALIM ST 4% I Ln VISTA ST RAVEN WOOD PL HOXIE'S ALLEY - o y s~ Z 4 To McNeal Half at SOU s Locator Map X -2162964 402t _ Y 831705 aa3,21 _ Legend a _ -Buildings Inside Path ° o ~a~asre Buildings Not in Path Streams Inundation Path op~ Fair Weather - Flood Condition Evacuation Route 10 Red Cross Shelters H 1 inch = 300 feet M 1Pro;_MAPT033-1'41 MapstHoslerDamFvacMaos2013~FERC',mxd\Hosle!rDzimEvacMap2C13_View4 mxd Hosler Dam Evacuation Plan X.216,,5,66857 Y 833935 749145 Detail Map 5"TF qrF S t+ss ++88 may. Section 4.2 Mile Data Fair Weather Flood Condition Max. EL (ft) 1.759.4 1.761 5 Max. Rise (ft) 15.4 10.6 - - - Peak O (cfs) 70,000 94.000 • . Arnval Time (hr) 0.27 0.24 Peak Time (hr) 0 37 0 35 a 87 11 it Ill, 9W W N VAS NEVADA 5 125 5 h~"fi11 E NEVADA ST To Briscoe X -2161932 7, b9,' r Elementary School Y 1334 B33a53996925, RANDY ST u Cr EpVOW PL 2 I O 0I Ct` FAIR OAKS A ti0 7°5 z z D O a 0 Y X: -2162369.62556 O r~ Y 833228.506266 _ G W H Y l PV013gON NIV \VER~ SLEEpyy ` O4oW DR 68777 O W'N'AV OPVL" r r A UCIA AV Locator Map 40 Legend = Buildings Inside Path 0 1N Buildings Not in Path / ~ESS,cP - CON?-ON ST Streams Inundation Path v+ Fair Weather O - Flood Condition CRISPIN ST s ~ 0 Evacuation Route a ♦ Red Cross Shelters J W N d Z PATTERSON ST a g 1 inch = 300 feet d O IL M 1Prol_MAP\2003-1141_Maps\H°slerDamEvacMaos2C131FERC1mxd%FloslerDamEvacMao201.! vier.vb n,r.d A O Hosler Dam Evacuation Plan To Neal Hal( in t sou o v 1-5 South W Detail Map 6 00 Cr SID a -2163194.88221 CmDi Y. 834672.124241 r r O Section 4.8 Mile M Data Fair Weather Flood Condition O A Max. El. (ft) 1,708.61 1.713-1 0 Max. Rise (ft) 14.3 7.3 Peak Q (cfs) 51,000 77,000 m Arrival Time (hr) 0.39 0.34 -4 Peak Time (hr) 0.50 0.44 I z 0 T z 1 m p X -2162532.35222 a.1 Y.834490.830244 m v+ z - W L~ 6Q~O0 O~ rp l~ Gay ~ ~ " ~ V) z , < 1 O ~ O H ~ O C O k Locator Map ( WaSt Legend Treatment P - Buildings Inside Path o Buildings Not in Path Streams x: -2162274.3142 Y. 833925.24921 Inundation Path Fair Weather - Flood Condition l~ Evacuation Route Red Cross Shelters ° y 1 inch = 300 feet M:\Proj MAP\2003-114\ Maps\HoslerDamEvaeMaps2013\FERC\mxd\HoslorDamEvacMap2013_V ew6,MXC! + Y835920.470219 Hosler Dam Evacuation Plan X -216431769619 Detail Map 7 A N ♦ d X. -2164519 94219 Y. 835302.108597 i 1153 r y153 r i4 + ti 73 ~55 1 ~56 T 9 ys ~e9 0 67 5 w2~ 1+65 ~1 0 C3 To McNeal Hall Z _ at SOU c via 1-5 South Section 5.8 Mile Data Fair Weather Flood Condition Max. EI. 1,676.9 1,682.0 1015 Max. Rise e (ft) 88 41 Peak Q (cfs) 32,000 74,000 1013 Arrival Time (hr) 0.62 0.50 Peak Time (hr) 0.80 0.63 ,F 1045 ❑ 1 Q W 10y0 ~ b 4w 4 Oro ,9j7 e ♦ 9 s. ',o ~9aby'=~ ~ 4A g -?16358077687 Y 93529048558A ,cos ~ ~ a ,16-0 To McNeal Hall 13, at SOU via 1-5 South w Locator Map Legend ~~5 ® Buildings Inside Path 0 Buildings Not in Path Streams \ Inundation Path Fair Weather To Briscoe - Flood Condition Elementary School '609 1110- Evacuation Route Red Cross Shelters 2. d ~ 1 inch = 300 feet WPro!_MAP~003-114`_Maa51H05lerDamEva-Maas2013\FERC~maclAHOs'erDam EvacMaa2D19_Vlem' r~xC Hosler Dam Evacuation Plan - Detail Map 8 rn m A a T N Z A Z r R M x -2764801 22685 _ V 836880.557536 r ~oI m ~o Section 7.6 Mile Data Fair Weather Flood Condition Max. El. (ft) 1,618.4 1,626.5 Max Rise (ft) 8,9 4.0 Peak 0 (cfs) 17,000 52,000 Arrival Time (hr) 1 10 0.78 ~O. Peak Time (hr) 1.50 1.00 r9 s I To McNeal Hall at SOU via 1-5 South X' 216489196862 Y835953 458033 Locator Map Legend - Buildings Inside Path Buildings Not in Path Streams Inundation Path Fair Weather - Flood Condition -10 Evacuation Route ZIF Red Cross Shelters X. -2164317.69619 A Scoe Y M920 47021 nl Ele chool 1 inch = 300 feet M'\Pro1_MAP\2003.114\ Maps\HoslerDamEvacMaps2013\FERC1mxdVHoslerDamEvacMap2013_View8.mxc Hosler Dam Evacuation Plan Detail Map 9 - X _21MO5887149 Y 839075.042831 Section 9.3 Mile Data Fair Weather Flood Condition Max. El. (ft) 1,569.4 1,575.2 Max. Rise (ft) 6.0 2.4 Peak 0 (afs) 15.OD0 49.000 k_ 3~ r Arrival Time (hr) 1.701 1.20 Peak Time (hr) 2.101 1.40 +1 3 all ^ "rte' X33 j ~ -~~u 1T- I X Y 838361 37'C' - - - 1 to i X -2165514.8995 :Cq} Y 838154.474847 ~ ~ Idl Locator Map m t r, m f Legend - Buildings Inside Path Buildings Not in Path Streams Inundation Path Fair Weather - Flood Condition Evacuation Route Red Cross Shelters fI :E 1 1 inch = 300 feet h I M 1Prol MAP42003-'.141 Maps11-IoslerDamEvacMaps20131FERG1mxd1FloslerDam Evar,Mac2013 View9 mxa Hosler Dam Evacuation Plan Detail Map 10 I, I I X ~f,68 ;8643 r 10 _ X--2166484.28548 Y 839921 221483 I ~O \ ~B 4 V. ~ X -2166584 24615 Y 83940' 47,0159 i S~ 9 16 4*J 09 ~.0 dd Locator Map 1-10 p. S 3 ~ . ~ ~ Legend _ Buildings Inside Path Buildings Not in Path Streams ` Inundation Path o r" Fair Weather 0 - Flood Condition 0 Evacuation Route ■ Red Cross Shelters A. 1 inch = 300 feet L MiProl. MAPt2OC3-1141_MapslHoslerDam FVacMaps2C13lFERCtm%dlHoslerDarn EvacMap2013_View10 rud