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Local Emergency Flood Plan_20180221CITY OF NORTHAMPTON LOCAL EMERGENCY FLOOD PLAN West Street Stop-Log Deployment, December, 2015 Source: By Greg Saulmon, Daily Hampshire Gazette Emergency Management Department 26 Carlon Drive Northampton, MA 01060 MEMBERS: Mayor Emergency Manager Fire Department Representative Police Department Representative Public Works Director Original Flood Control Plan- March 19, 1970 Revised- March 18, 1990 April 6, 2001 October 10, 2005 March 10, 2006 February 21, 2018 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 2 TABLE OF CONTENTS 1. Background .................................................................................................... 3 2. Flood Stages and Emergency Coordination ................................................... 4 3. Inundation Mapping and Action Summary .................................................... 11 4. Contact Information ...................................................................................... 20 5. Emergency Dispatch Notification Checklist .................................................. 21 6. Levee Patrol Checklist .................................................................................. 22 7. Stop Log Installation Procedures .................................................................. 25 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 3 1. BACKGROUND The flood protection system for the City of Northampton consists of two main parts:  Connecticut River Right Bank – A levee system on the eastern part of the City affording protection against high water from the Connecticut River. The system consists of 4,600 linear feet of earthen embankment, 200 linear feet of concrete floodwall, two stop-log closure structures, and a flood control pump station located at the Wastewater Treatment Facility off Hockanum Road, and  Mill River Left Bank Smith College - An earth dike and concrete flood wall in the western part of the City, starting downstream of the Paradise Pond Dam, which, together with the Mill River diversion canal, affords protection against flash floods on the Mill River and backwater from the Connecticut River via the Ox Bow. The system consists of 2,000 linear feet of earthen embankment, 450 linear feet of concrete floodwall, one stop-log closure structure, an 11,000 foot long diversion channel for the Mill River, with associated drop structure. A small pumping station is located near the southeast corner of the stop-log closure structure on West Street (Route 66). The two flood control systems are interdependent; the failure of one system would cause flooding in the levee-protected area of both systems. The Mill River can flash flood independently of the Connecticut River due to its local watershed while the Connecticut River requires a major Northeast Region (Massachusetts/New Hampshire/Vermont) event to cause flooding. Current and predicted flood elevation data for the Connecticut River may be obtained from the National Weather Service (NWS) Advanced Hydrologic Prediction Service for the river gage named “Connecticut River at Northampton” which is located at the Flood Control pumping station off Hockanum Road. The gage datum is recorded in NGVD29, and flood stage is set at 112 feet. Flooding conditions along the Mill River Flood Control Structure may be due to the effect of backwater from the Connecticut River, flooding on the Mill River or a combination of both. Flood elevation and discharge data for the Mill River is available from the U.S. Geologic Survey (USGS) gage No. 01171500 “Mill River at Northampton, MA” located near the Clement Street Bridge. The USGS does not provide hydrologic predictions for the water levels. The estimated discharge of 2,210 cfs is considered flood stage at 11 feet, which corresponds to 181 feet NGVD29. The flows in the Mill River should be monitored to be aware of actions that may need to be implemented, such as closing the West Street closure structure or employing the West Street Pumping Station based on Mill River water levels in the lower reaches of the Mill River. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 4 2. FLOOD STAGES AND EMERGENCY COORDINATION The emergency phases identified in this local emergency flood plan coincide with the NWS flood stages for the Connecticut River to maintain consistency between the local and regional efforts. The flood stages and categories are as follows: NWS Category Associated Local Flood Plan Phase Elevation* Low Stage A1, A2, A3 100 Action Stage B 110 Flood Stage C 112 Moderate Flood Stage D 115 Major Flood Stage E1, E2, E3 120 Top of Floodwall F1 130 Overtops Dike F2, F3, F4, F5 132 *Connecticut River at Northampton Stage in feet NGVD29 The following sections provide a description of the effects of flooding at various Connecticut River and Mill River elevations and the responsibilities of local and State persons and agencies for emergency management response. It is important to review the flood elevations and actions that are required for both the Connecticut River and Mill River flooding and monitor the weather forecasts, the NWS, and USGS gages for flooding information. Flood plan action levels described in the following sections are based on NGVD29 data, which is the datum consistently referenced in this Plan. Based on experience in the operation of the flood control system, the Connecticut River system may be operated based on predictions from the NWS Advanced Hydrologic Prediction Service. The Mill River flooding must be predicted by City staff and interior flooding within the Mill River watershed in combination with a Connecticut River tailwater that is at the level of the South Street Drop Structure spillway is significant enough to typically cause Mill River flooding. The City’s Flood Control System Operation and Maintenance Manual provides detailed information and procedures for flood control operation, including system record plans, pumping station operation procedures, valve and gate details, flash board construction details, etc. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 5 Phase A1: Elevation 105 ft. Effect: Connecticut River backs up Wastewater Treatment Facility (WWTF) effluent line to the manhole invert at Hockanum Road pumping station. Duty Action 1. DPW Flood Control Operator Alarm at Flood Control Pumping Station sounds and automatic notification is made to Flood Control Operator. Phase A2: Elevation 105.5 to 106 ft. Effect: WWTF effluent must be pumped as gravity discharge is no longer possible. Duty Action 1. DPW Flood Control Operator Close outfall gate at its sewage effluent pumping station so WWTF effluent is pumped to the Connecticut River. 2. DPW Flood Control Operator Close the sluice gate on the gravity conduit at the Flood Control Pumping Station (located at WWTF) and pump storm flow to the riverside of the flood control system. 3. DPW Flood Control Operator Notify Highway Superintendent & Sewer Department Foreman of pumping station status and river level (and at every increased response phase). Phase A3: Elevation 107 ft. Effect: Connecticut River and Mill River Diversion begins flooding Pynchon Meadows and Manhan Meadows. Duty Action 1. DPW Flood Control Operator Notify Emergency Dispatch (and at every increased response phase). 2. DPW Highway Superintendent Notify Director of Public Works (and at every increased response phase). 3. DPW Sewer Foreman Close Pynchon Meadow Road and Old Springfield Road 4. Emergency Dispatch Notify Police (NPD) and Fire Departments (NFD) of water level, associated response phase, and road closures. 5. Emergency Dispatch Notify Highway Auto Salvage of water level (Courtesy Only) LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 6 Phase B: Elevation 110 ft. Effect: Action Stage. Duty Action 1. DPW Flood Control Operator Notify Emergency Dispatch of river elevation and response phase. 2. Emergency Dispatch (at request of Flood Control Operator; See Section 4 for Emergency Dispatch Notification Checklist) Notify Mayor, Emergency Manager, NPD, and NFD of water level and associated response phase. Phase C: Elevation 112 ft. Effect: Flood Stage. Manhan Meadows starts flooding into Fort Hill Sewer interceptor. Duty Action 1. DPW Flood Control Operator Notify Emergency Dispatch of river elevation and response phase. 2. DPW Sewer Foreman Inspect the Fort Hill Sewer and Mount Tom Sewer interceptors. 3. Emergency Dispatch (See Section 4 for Emergency Dispatch Notification Checklist)  NPD and NFD shift Officers in Charge (OIC) (call stations)  Police Chief  Fire Chief  Communications Center Administrator Notify the following during waking hours only:  Mayor  Central Services Director  Building Commissioner  Pioneer Valley EMS Supervisor  Red Cross  City Council President  Highway Auto Salvage (Courtesy only) 4. Emergency Dispatch Community notification (within areas outside of levee protection) made to advise of rising water level through reverse 911 emergency system. Notify local media. Example Public Message: “This is a warning that the Connecticut River is at flood stage. Low-lying areas of the City not protected LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 7 by the flood control system may be required to evacuate should the water levels continue to rise. The Northampton Police Department will warn residents by loudspeaker should evacuation become necessary. Please follow the situation on local news stations, radio, and the City’s website at www.northamptonma.gov.” Phase D: Elevation 115 ft. Effect: Moderate Flood Stage. Route 5/Mt. Tom Road floods near Easthampton Line and/or Island Road. Venturer’s Field Road and Hockanum Road near flooding. Duty Action 1. DPW Flood Control Operator Notify Emergency Dispatch of river elevation and response phase. 2. Emergency Dispatch Notify Phase C list of river elevation and associated response phase. 3. DPW Highway Superintendent/ DPW Sewer Foreman Close Venturer’s Field Road and Hockanum Road at dike. 4. DPW Sewer Foreman Dispatch daily frequency levee patrol. 5. DPW Sewer Foreman Close stormwater gate valve at Eastern Avenue. 6. NPD Patrol Fair Street Extension, Walnut Trees Path, Old Ferry Road, Island Road, and adjacent streets to warn and evacuate residents. 7. Emergency Dispatch and NPD Notify MassDOT District 2 and coordinate with NPD to close Route 5/Mt. Tom Road south of Atwood Drive. 8. Emergency Dispatch Notify Massachusetts State Police (MSP) and Easthampton PD of impending road closing under Phase E1. 9. Emergency Manager Establish Emergency Operations Center (EOC) at 26 Carlon Drive: no staffing, precautionary measure only. 10. NPD and NFD Evaluate need for pre-placing emergency equipment near Island Road neighborhood for use if area becomes isolated by water. 11. Emergency Dispatch Notify Columbia Gas as a courtesy, in case localized flooding affects natural gas main in Pleasant Street. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 8 Phase E1: Elevation 120 ft. Effect: Major Flood Stage. Old Ferry Road, Fair Street Extension and Walnut Trees Path starts flooding. Mill River at West Street begins flood stages. Duty Action 1. DPW Flood Control Operator Notify Emergency Dispatch of river elevation and response phase. 2. Emergency Dispatch Notify Phase C list of river elevation and associated response phase. 3. DPW Sewer Foreman Dispatch continuous frequency levee patrol. 6. DPW Sewer Foreman Plug the sewer gate valve at Dike Road (Mount Tom Sewer interceptor) using SOP in O&M Manual. 4. Mayor Decide whether to call the Emergency Flood Coordinating Board to a meeting in the EOC (26 Carlon Drive). 5. Emergency Manager Direct EOC to be staffed at minimal level (2-3 people). Begin planning for food and accommodations for evacuated residents. 6. DPW Highway Superintendent/ DPW Sewer Foreman Close Old Ferry Road at Interstate 91 underpass and Fair Street Extension and Walnut Trees Path. Evacuate occupants on Mt. Tom Road. 8. Emergency Manager Order Pan Am/MassDOT/Amtrak Railroad main closed. Notify MassDOT District 2. 9. Emergency Manager/ EOC Notify Massachusetts State Police and MassDOT request for Interstate 91 Exit 18 ramps to be closed. Notify Easthampton Police Department of closing. 10. NPD Dispatch traffic police to Route 5/Pleasant Street closure structure. 11. DPW Highway Superintendent Install center uprights for stop-log structures at Route 5/Pleasant Street and Pan Am/MassDOT/Amtrak Railroad main. Readies sand bags and stop-log structure materials. 12. DPW Sewer Foreman Open fence at Riverbank Road and Route 9 for vehicular traffic and notifies MassDOT and Massachusetts State Police due to proximity to Interstate 91. Evacuate Riverbank Road. 13. DPW Flood Control Operator Ensure flap valve on Mill River concrete wall off West Street (south of bridge) is closed. DPW readies West Street pumping station. Pumping as required. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 9 Phase E2: Elevation 124 ft. Effect: Sill of stop log structure at Route 5/Pleasant Street begins flooding (Sill at 124.1 feet). Sill of stop log structure at Pan Am/ MassDOT/ Amtrak Railroad main line is within one foot of flooding (Sill at 125.0 feet). Mill River at West Street flood control activities commence. Duty Action 1. DPW Flood Control Operator Notify Emergency Dispatch of river elevation and response phase. 2. Emergency Dispatch Notify Phase C list of river elevation and associated response phase. Notify MassDOT of Route 66/West Street closure. 3. DPW Highway Superintendent Deploy full stop log structures, Route 5/Pleasant Street and Pan Am/ MassDOT/ Amtrak Railroad main line. 4. DPW Water Superintendent Shut off water mains on Mill River Bridges as determined by Water Superintendent. 5. NPD Dispatch traffic police to West Street closure structure. 6. DPW Highway Superintendent Install center uprights for stop log structures at Mill River at West Street. Ready sand bags and stop log structure materials. 7. Emergency Manager/ EOC Make preparations for an additional 30 DPW workers to assist with emergency stand-by. 8. NPD and NFD Begin water rescue operations as necessary. 9. Emergency Manager Increase EOC staffing level up to maximum (to be determined by Emergency Manager). Phase E3: Elevation 127 ft. Effect: Connecticut River flood level within three feet of top of concrete wall flood control facility at WWTF. Mill River at West Street nears flood levels. Portions of South Street/Route 10 (Mill River east) start flooding. Duty Action 1. DPW Highway Superintendent Deploy full stop logs structures on West Street. 2. DPW Highway Superintendent Construct and install flash boards on the top of the concrete floodwall adjacent to the Hockanum Road Pumping Station per O&M manual detail. 3. DPW Highway Superintendent Distribute sandbags to critical locations along Mill River dikes based on feedback from patrols. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 10 Duty Action 4. NPD Patrol on Earle Street, Paquette Avenue, South Street/Route 10 (Mill River east), Texas Road and West Street (Mill River east to Earle Street) to warn and evacuate residents. 5. Mayor Request Governor to declare State of Emergency. Phase F1: Elevation 130 ft. Effect: Flood level is at top of concrete wall of Flood Control Facility. Flash boards on the top of the concrete floodwall should prevent overtopping. Duty Action 1. DPW Wastewater Superintendent & Flood Control Pumping Station Operator Evacuate Flood Control Pumping Station and WWTF. 2. Mayor and Emergency Manager Assume command of emergency situation. Order all residents to evacuate areas of City under elevation of 135 ft. Phase F2: Elevation 132 ft. Effect: Flood level is at top of Connecticut River dikes. Connecticut River ready to over run into city property along the entire Connecticut River dike system. Duty Action 1. Mayor and Emergency Manager Continue evacuation of City under elevation of 135 feet. Phase F3: Elevation 137 ft. Effect: Mill River is at top of old railroad bridge opening downstream of West Street. Portions of Lovefield Street begin flooding. Mill River flood control system starts flooding City (direct link to downtown) via old Mill River bed (formerly railroad, now a bicycle rail trail). Duty Action 1. Mayor and Emergency Manager Command emergency situation. Order all residents to evacuate areas of City under elevation of 145 ft. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 11 Phase F4: Elevation 140 ft. Effect: Mill River is at top of flood control structure downstream of West Street. Duty Action 1. Mayor and Emergency Manager Command emergency situation. Order all residents to evacuate areas of City under elevation of 150 ft. Phase F5: Elevation 145 ft. Effect: Mill River is at top of flood control structure upstream of West Street. Duty Action 1. Mayor and Emergency Manager Continue to order all residents to evacuate areas of City under elevation of 150 ft. 3. INUNDATION MAPPING AND ACTION SUMMARY The following figures depict the inundation areas for critical action stages. A summary of the locations and major actions to be taken during each flood Phase are shown to summarize the requirements in Section 3. 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CONTACT INFORMATION Agency/Person Contact Information City of Northampton Personnel Department of Public Works (DPW) Flood Control Operator Pumping Station, 413-587-1093 Dale Small, cell: 413-539-0440 On Call WWTP: 413-530-4994 DPW Wastewater Superintendent Jim Zimmerman 413-587-1090 Director of DPW Donna LaScaleia 413-587-1570 ext. 4301; cell: 802-490-9602 DPW Highway Superintendent Rich Parasiliti 413-587-1570, ext. 4317; cell:413-230-4200 DPW Sewer Foreman Brendan Shea 413-587-1570 ext. 4316; cell: 413-687-2902 Emergency Dispatch 413-587-1100 Emergencies: 911 Mayor David J. Narkewicz 413-587-1249 Emergency Manager Jon Davine Emergency Management Coordinator 413-587-1032 Police (NPD) Chief Jody Kasper 413-587-1110 (Desk Officer) Fire Department (NFD) Chief Duane Nichols 413-587-1032 (Admin) Community Notification City’s Reverse 911 System – CODE RED Central Services Director David Pomerantz 413-587-1238 Building Commissioner Louis Hasbrouck 413-587-1240 Other Agencies/Persons Massachusetts State Police 413-584-3000 Pan Am Dispatch; 800-955-9207 MassDOT Rail Programs Tim Doherty; 857-368-8965 MassDOT District 2 413-586-1611, after hours 800-227-0608 Red Cross 413-584-8887 City Council President Ryan O’Donnell, XXXXXXXXXXXXXXXXX Easthampton Police Department 413-527-1212 Highway Auto David Amo 413-594-9603 (home) 413-885-2072 (cell) Columbia Gas, External Affairs Tracy Stefanowicz; 413-784-2130 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 21 5. EMERGENCY DISPATCH NOTIFICATION CHECKLIST Print blank form to fill out for each flooding event and keep on file at DPW. Date/Time Event Begin: _____________________________________ Date/Time Event End: _____________________________________ Phase Completed/ Time Emergency Dispatch Notification/Action Phase A1 (105 ft) None Phase A2 (106 ft) None Phase A3 (107 ft)  _______  _______  _______ Police OIC (NPD) Fire Department OIC (NFD) Highway Auto Salvage (Courtesy only) Phase B (110 ft)  _______  _______  _______  _______ Mayor Emergency Manager NPD NFD Phase C (112 ft)  _______  _______  _______  _______  _______  _______  _______  _______  _______  _______  _______  _______  _______  _______ Reverse 911 to community, local media NPD (OIC) NFD (OIC) Fire Chief Police Chief Communications Center Administrator Emergency Manager (Non-Emergency; Waking Hours Only): Mayor Central Services Director Building Commissioner Pioneer Valley EMS Supervisor Red Cross Northampton City Council President Highway Auto Salvage (Courtesy only) Phase D (115 ft)  _______  _______  _______  _______  _______ Phase C List MassDOT District 2 (Close Rt 5 south of Atwood Dr) MSP (for impending road closing) Easthampton PD (for impending road closing) Columbia Gas (Courtesy for potential flooding) Phase E1 (120 ft)  _______  _______  _______  _______  _______ Phase C List Pan Am/ MassDOT Railroad to close main line MSP and MassDOT District 2 for I-91 Exit 18 ramps to be closed Easthampton PD (for road closing) Columbia Gas (Courtesy for potential flooding) Phase E2 to F6 (124+ ft) None. Emergency Operations Center in charge of communications LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 22 6. LEVEE PATROL CHECKLIST Date: ___________ Inspectors Initials (2 person team): ____________________ Time Inspection Began: _____________ Connecticut River El. _______ NAVD29 Time Inspection Ended: _____________ Connecticut River El. _______ NAVD29 Levee(s) and Station Range(s) Inspected: ________________________________________________________________ Type (Circle One): Daily Inspection Continuous Inspection Take photographs of all significant issues (use date/time stamp feature on the camera, when possible). Safety Equipment for Patrols:  Portable radio or cell phone  Safety vests  Watch  Life jackets  Log book  Footwear (Foul weather)  Hard hats  Harnesses  Plans of flood control project  Weather gear  40 feet of ½” nylon safety line to connect team members  Flashlights  Camera Flood Fighting Equipment (quickly accessible if an issue is identified):  Sandbags  Short wooden stakes  Mallet  6 mil poly sheeting  Probing rod Levees Inspection Items:  Look for sand boils or unusual wet areas landward of the landside toe  Look for slides or sloughing in levee side slopes  Look for wave wash or scouring of the riverside levee slope  Look for low areas in levee crown  Check flap/sluice gates for proper closure  Check gap closures (stop-log/sandbag, etc.) Notes/Issues: LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 23 Concrete Floodwalls Inspection Items:  Look for saturated areas or sand boils landward of the floodwall;  Look for settlement (movement) of the floodwall;  Look for bank caving that may affect the structural stability of the floodwall;  Inspect toe drain risers (discharging/non-discharging);  Inspect the landside of floodwall for any leakage, especially around the monolith joints;  Inspect for wet areas, soft areas, seeps, and sink holes landward of the toe of the floodwall; and  Check gap closures (stop-log/sandbag, etc.) Notes/Issues: Source: FEMA, Emergency Preparedness Guidelines for Levees A Guide for Owners and Operators, January 2012. Common Flood-fighting Methods: Source: State of California, California Natural Resources Agency, Department Of Water Resources, Flood Fighting Methods. https://www.water.ca.gov/LegacyFiles/floodmgmt/docs/flood_fight_methods.pdf . Sandboil Ring LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 24 Protection for a Riverside Boil on the Levee Wavewash Protection Water Level LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 25 7. STOP LOG INSTALLATION PROCEDURES The following are procedures for stop log installation at each of the three closure structures in the flood control system. The written procedures are followed by figures depicting the installation at each location. West Street Stop Log Structure Sill Elevation: 131.4 feet Deploy at: 124 feet Crew: (1) Working Foreman (1) Truck Driver (1) Fork Lift operator (1) Loader operator (2) Laborers Vehicle List: (1) Loader with boom that lifts 14 feet high for West Street (2) Loader with forks for loading at DPW (1) Truck for trusses (1) Truck for Stop Logs (2) Pick-up trucks that can haul equipment Equipment List: (2) 25 foot chains with slip and grab hooks on each end (1) Iron Pry Bar (2) Shovels-flat and pointed (1) Pick (1) 10-12 lbs long handle sludge hammer (1) 3-4 lbs short handle sludge hammer (1) 20 oz. Framers hammer (2) 20 foot extension ladders (1) Chain saw (4) 100 foot electric extension cords (1) Portable Generator 3-4 receptacles (1) Small air compressor (1) Air nail gun 10-12-16-penny (5) Gals. of gas mix for chain saw (5) Gals. of regular gas for generator Lighting for work area Cones and Barriers for work area (28) Pieces of 1/2” or 3/8” plywood for Stop Log Wall (1,800) sf 6 mil poly sheeting for riverside of wall (8) Wooden wedges LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 26 Procedures: 1. Working Foreman and an equipment operator go to West Street and prepare the site for Stop Log assembly with pick-up truck with equipment, loader with boom, and generator for lighting (if needed). a. The equipment will be unloaded in areas out of the way for stop log assembly. b. At West Street traffic cones, barricades, and lighting will be set up. The area is for designated vehicles and only the Working Foreman will permit entry to the work site. This will ensure a safe and controllable work zone. c. Truss connections will be uncovered. Dirt and debris shall be removed from the truss connectors. 2. Remaining crew of four men loads uprights (trusses) and hardware, delivers to site and installs. a. The load will be delivered to West Street. The truck driver will stay at West Street and assist with truss assembly. b. When work zone is ready the trusses will be unloaded and installed. 3. Forklift loads stop-logs and delivers to West Street for installation a. Second truck is loaded with stop logs and delivered to West Street. b. The forklift is left at DPW because too many vehicles in one spot are hazardous to the crew at West Street. c. Stop logs are installed up to 4 feet high. d. Drive wooden wedges between the top log and the slots to prevent floatation. 4. When the stop logs are starting to be installed, poly sheeting and plywood are delivered. See “Plywood Delivery” below. a. Plywood shall be placed on the riverside of the stop logs when the walls are 4 feet high. They will be nailed to the stop logs when the logs are assembled. b. Fasten more as the wall gets higher. 5. Install poly sheeting on the riverside side of the levee to anticipated water level with sandbags to tamp down the sheeting. a. Place poly sheeting on the outside of the plywood and lay 3 feet on roadway. b. Use detail for stacking overlapping bags in a double row on the riverside of the stop logs three high to tamp the sheeting against the roadway. c. See “Sandbag Construction and Delivery” 6. Assemble the log stops to level decided by DPW/Working Foreman. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 27 Route 5/Pleasant Street Stop Log Structure Sill Elevation: 124.1 feet Deploy at: 120 feet Crew: (1) Working Foreman (1) Loader operator (3) Laborers Vehicle List: (1) Loader/backhoe (2) Pick-up trucks that can haul equipment Equipment List: Same as for West Street, except: (12) Pieces of 1/2” or 3/8” plywood for Stop Log Wall (6) Wooden wedges Procedures: 1. Open Stop Log housing structure and slide stop-logs on rails for access 2. Install trusses 3. Install stop logs 4. Drive wooden wedges between the top log and the slots to prevent floatation. 5. When the stop logs are starting to be installed, poly sheeting and plywood are delivered. See “Plywood Delivery” below. a. Plywood shall be placed on the riverside of the stop logs when the walls are 4 feet high. They will be nailed to the stop logs when the logs are assembled. b. Fasten more as the wall gets higher. 6. Install poly sheeting on the riverside side of the levee to anticipated water level with sandbags to tamp down the sheeting. a. Place poly sheeting on the outside of the plywood and lay 3 feet on roadway. b. Use detail for stacking overlapping bags in a double row on the riverside of the stop logs three high to tamp the sheeting against the roadway. c. See “Sandbag Construction and Delivery” 7. Assemble the log stops to level decided by DPW/Working Foreman. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 28 Pan Am/ MassDOT/ Amtrak Stop Log Structure Sill Elevation: 125.0 feet Deploy at: 120 feet Crew: (1) Working Foreman (1) Loader operator (3) Laborers Vehicle List: (1) Loader/backhoe (2) Pick-up trucks that can haul equipment (1) 1 ton dump truck Equipment List: Same as for West Street, except: (8) Pieces of 1/2” or 3/8” plywood for Stop Log Wall (4) Wooden wedges Procedures: 1. Open Stop Log housing structure and slide stop-logs on rails for access 2. Install trusses 3. Install stop logs 4. Drive wooden wedges between the top log and the slots to prevent floatation. 5. When the stop logs are starting to be installed, poly sheeting and plywood are delivered. See “Plywood Delivery” below. a. Plywood shall be placed on the riverside of the stop logs when the walls are 4 feet high. They will be nailed to the stop logs when the logs are assembled. b. Fasten more as the wall gets higher. 6. Install poly sheeting on the riverside side of the levee to anticipated water level with sandbags to tamp down the sheeting. a. Place poly sheeting on the outside of the plywood and lay 3 feet on ballast. b. Use detail for stacking overlapping bags in a double row on the riverside of the stop logs three high to tamp the sheeting against the ballast. c. See “Sandbag Construction and Delivery” 7. Assemble the log stops to level decided by DPW/Working Foreman. LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 29 Plywood Delivery Crew: (4) to (6) men total with 2 or 3 men per truck Vehicle List: (2) Trucks for plywood Equipment List: (Up to 48) Pieces of 1/2” or 3/8” plywood Procedures: 1. Water Department crew assembles for delivering plywood 2. Load Truck 3. Deliver to sites as directed by DPW/Working Foreman Sandbag Construction and Delivery Crew: (1) Working Foreman (2) Sander operators (2) Truck Drivers Vehicle List: (2) Sanders that eject sand from the sides or back (1) Loader/backhoe (2) Trucks for transport Equipment List: (Up to 200) Sand bags @ 24” x 18” ea. Procedures: 1. Sand bags are gathered at salt shed 2. Crew at DPW fills bags with sander and loads onto trucks 3. Deliver to stop log sites LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 30 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 31 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 32 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 33 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 34 LOCAL EMERGENCY FLOOD PLAN NORTHAMPTON, MASSACHUSETTS Page 35