The Parkway extends for 29 miles through The lack of maintenance for the existing grass ditches and build-up of debris at the curb openings has become a major problem, both of which would be improved with paved ditches (which generally require less maintenance). =18,150, Asphalt for paved gutters: 8,008 CF x 0.075 Ton/CF x $200/Ton = $120,120, Asphalt: 195 CF x 0.075 Ton/CF x $200/Ton = $3,000, Bioswale Const. According to the FEMA Flood Insurance Study for Westchester County (2007), a significant amount of storage and routing occurs at locations of undersized bridges/culverts in the Saw Mill River floodplain. With the Saw Mill River, as with other rivers, there are various factors that exacerbate the physical limitations of the river channel, thus contributing to flooding of the Saw Mill River Parkway. However, a review of the effective FEMA Flood Insurance Study and watershed patterns indicates that there is low potential to enhance existing storage capacity in ponds and swamps along the Saw Mill River and its major tributaries. As noted in previous sections, a lifecycle cost comparison of these adaptation alternatives can provide further insight into the overall costs and benefits of each alternative. The curbed Parkway has a total of 22 feet of pavement with a 4-foot wide median and no shoulders. The most vulnerable river crossings and nearby segments of roadway would be made resilient to overtopping (short of raising the roadway), and embankments and other geotechnical structures in the area of flooding would be made resilient to erosion. Bioswales generally have higher capital costs and require more maintenance than asphalt ditches as they need to be cleared of debris and periodically landscaped. A more precise estimate of the aggregate additional miles traveled (and associated person hours of delay) would require the use of a regional travel demand model. Flood Profiles illustrate the water surface elevation for various storm events with culvert and bridge crossings plotted along the river profile. Press Releases; Departments Look up County department; Boards and Commissions Contacts and meeting schedules; Alerts Goes to The project began in April of 2014, and its nearing completion now.. Watershed-level (discussed in Section 6.1). The average annual number of days with over 2 inches of rainfall is projected to increase to 4 by 2050 and 4-5 by 2080. Its very disruptive to the business. My partner and I leased it from the original owner and replaced or repaired everything. The majority of the people were working with are up and running again, but theyre not at the level they were., John Cornelius, a business analyst at the, Life Lessons, Learned In Westchester (At Any Age), Think Parenting Isn't Fun? Figure 9: A technical detail of an engineered bioswale used to convey, infiltrate and treat stormwater. John Ambrose, co-owner of Seaside Johnnies and the Pier Restaurant & Tiki Bar near Rye Playland, says he felt obligated to reopen his popular coastal hangouts on schedule: We had eight feet of water in our basement at Seaside Johnnies. Call or stop by our office in Rye, and let us know how you and your loved ones are doing. For this reason, precipitation was selected as the climate stressor to review as part of this assessment. While an expensive option, it would effectively remove roadway infrastructure from the floodplain, specifically downstream of Lawrence Street where the water surface elevations during specific storm events go over the bridge elevations, and flooding concerns are among the most significant along the different segments of the roadway. The riser for a retention basin has an orifice at a higher elevation so that it retains a permanent pool of water. New York: [14] Mileage and time estimates are based on Google Maps. The original waterway opening under a bridge may become inadequate over time as a result of changing drainage patterns and land use conditions in the watershed. This analysis does not estimate the annualized economic costs (based on the frequency of these events) or the cumulative discounted costs over the mid- and end-of-century time horizons. Parkway Orientation in Floodplain: Finally, the location and elevation of the Saw Mill River Parkway in a floodplain is a major indicator of the likelihood of its flooding. These IDF curves can be used to inform the process of updating drainage design guidelines. WHITE PLAINS As part of his ongoing probe of high gasoline prices in the wake of Hurricane Sandy, Attorney General Eric T. Schneiderman today announced that The drainage system proposed in this strategy would have a lower environmental impact at the outlet compared to conventional systems, as stormwater runoff pollutants would be treated through bioswales, which would remove sediments, reduce nutrient loading and attenuate peak flow conditions from small storms, therefore reducing erosion at the outfalls. This segment was chosen by NYSDOT for further analysis in this assessment. When Hurricane Sandy hit on Oct. 29, it left more than 300,000 Westchester County residents without power, including more than 11,000 in White Plains, about half of Consolidated Edison's As of Monday morning, Sandy was centered more than Therefore, a conservative (low-risk) approach points to the 2080 horizon as the optimal planning scenario for future improvements to the existing drainage system along the Saw Mill River Parkway. Climate Change in New York State: Updating the 2011 ClimAID Climate Risk Information. Design calculations need to be done to make sure this option is effective enough to solve the drainage issue. 
Chapter 8 of the NYSDOT Highway Design Manual specifies that highway storm drain systems should have a design life and anticipated service life equal to 70 years. As a result of the implementation of this strategy, the mobility of disadvantaged populations would not be disrupted. The frequency and magnitude of precipitation events impacting the Parkway segment are projected to increase. WebEven though Hurricane Sandy was declared a post-tropical cyclone by the time it made its final landfall -- just 5 miles southwest of Atlantic City, New Jersey at about 8 PM EDT on WebHurricane Sandy As Hurricane Sandy left a wake of destruction across the Mid-Atlantic States and New England, the U.S. Department of the Interior (DOI) mobilized resources NYSDOT and the New York State Thruway Authority could install Variable Message Signs, make improvements to ramps and interchanges (particularly the Saw Mill River Parkway/Cross County and Cross County/Thruway interchanges), allow shoulder use, waive tolls at the Ardsley Plaza (or increase them, if demand management is a goal), retime signals on US 9 and connecting routes, coordinate with the New York Metropolitan Transportation Authority (MTA) and Bee Line Bus to encourage use of the Metro-North Railroad (e.g., via free shuttles to Metro-North stations), and use other measures to accommodate flows of people and freight on days when the Saw Mill is closed due to flooding. Central maintenance specifications will not need to be updated to implement this design recommendation. These pictures illustrate the importance of maintenance to remove debris from clogged bridge and culvert openings to prevent flooding during future storm events. [21] Westchester County, Bee-Line System Map, http://transportation.westchestergov.com/images/stories/pdfs/2014SysMapEng.pdf. You may be entitled to some break on your bill due to interruptions in service from Hurricane Sandy. Undersized culverts can create a bottleneck, restricting the rivers flow, resulting in flooding when the water cannot pass through the culvert and is diverted. Given that this strategy recommends modifying drainage design guidelines, this strategy is only applicable to future drainage systems or existing systems subject to significant modification. I would never consider going elsewhere.. Either way, attendance at Playland was way down in 2013 [people didnt know it was open], and it had a damaging effect on our business. Given this current and projected exposure to precipitation events, the segment is and will be sensitive to the following potential modes of failure: Table 4 provides estimates of the full replacement cost of this 0.2 mile Parkway segment and the recovery time required to restore services at the Parkway after a flooding event. The Saw Mill River Parkway Corridor is one of ten transportation facilities selected for an engineering-informed adaptation assessment. When the debris is cleared, the chance of flooding is decreased. We financed the restoration ourselves and immediately gathered a crew of people to put Humpty Dumpty back together againwe felt an obligation to open on schedule for the following beach season. If a roadways longitudinal slopes are not steep enough to maintain the desired flow velocities for debris removal, a bioswale may work in conjunction with asphalt ditches in series, or an underdrain system may be installed as shown in Figure 9. There are 17 block groups in the southern part of the City of Yonkers west of the Parkway in which between 23 and 38 percent of the population is below the poverty level. [23] This amount was estimated by the project team under the assumption that NYSDOT may need to conduct studies prior to initiating the process of updating design guidelines, and then following the process. As mentioned in Section 2, the NRCC at Cornell University has developed projections for the increase in the magnitude and frequency of precipitation events at the Dobbs Ferry, NY location, using NARCCAP and CMIP5 simulations. FEMA Flood Insurance Rate Maps (FIRMs) utilize statistical information, such as data for river flow, storm tides, hydrologic/hydraulic analyses, and rainfall and topographic surveys to determine flood risk. According to Chapter 8 of the NYSDOT Highway Design Manual, highway storm drain systems should have a design life and anticipated service life equal to 70 years. EPAs assistance at this site was no longer required as of December 7. [15] Mileage and time estimates are based on Google Maps. By removing the obstruction and clearing the opening, the river is able to flow freely through the culvert. Next, a risk assessment has to be conducted to identify the broader consequences of flooding in the watershed, after which preliminary strategy alternatives are proposed based on previously set end- goals. 
NEW YORK As part of an ongoing probe of high gasoline prices in the wake of Hurricane Sandy, Attorney General Eric T. Schneiderman today announced that he has. By using an updated IDF curve, 10- and 50-year design storms, as specified in the current Highway Design Manual, can continue to be used to provide an adequate number of drainage structures to accommodate end-of-century projections. Westchester County Disaster Recovery Fund Distributes Hurricane Sandy Relief Grants Co-Communications, Inc. , Neighbor Posted Tue, Jun 18, 2013 at 2:28 pm ET See Table 2 for a summary of these projections. When the grass is overgrown and the ground is saturated from heavy rain, the grounds infiltration rate decreases. Hurricane Sandy caused unprecedented damage to the county when it struck Westchester on October 29, 2012, with hundreds of homes impacted, many businesses damaged, and three deaths. Once the strategies are finalized in the Master Plan, an implementation program can be designed, which would include an implementation schedule, a monitoring component, and technical and financial assistance needed to implement the Plan. It is estimated that construction of the asphalt ditches would take approximately six months; however, the design process and permit application process must take place prior to construction and could take several years depending on the agencys ability to find the funding, and carry out the design process. Therefore both the economic travel time and vehicle operating costs per event were multiplied by 90 percent for moderate to heavy rainstorm events and by 40 percent for severe storms/hurricanes. The cost analysis for this strategy is based on a high planning-level design and only includes capital costs. During Hurricane Sandy, the Middlesex County Utility Authority lost power to its water utility intake pump. WebHurricane Sandy was the 18th named tropical cyclone of the 2012 Atlantic hurricane season (June 1 - November 30). See Figures 3 through 5 of two box culverts along the Saw Mill River in the town of Greenburg, south of Lawrence Street. It is a north-south Parkway supporting two lanes of traffic in each direction divided by a median barrier. Several segments of the Parkway currently experience flooding during precipitation events of various return periods. Source: Northeast Regional Climate Center, Cornell University. The Parkway segment evaluated in this assessment is located in a floodplain and currently experiences flooding during moderate to heavy rainstorms. [16] Census.gov, New York-Northern New Jersey-Long Island, NY-NJ-PA Metro Area, http://www.census.gov/prod/2013pubs/acsbr12-02.pdf, [17] Revised Departmental Guidance on Valuation of Travel Time in Economic Analysis, US DOT, June 2014, https://www.transportation.gov/sites/dot.gov/files/docs/USDOT%20VOT%20Guidance%202014.pdf, [18]National Household Travel Survey, U.S. In addition, it should be noted that land along the Parkway (adjacent to the vegetated ditches) is designated as parkland and is under the jurisdiction of the New York's State Historic Preservation Office (SHPO). The map identifies the areas at risk for flooding. At this location, natural ditches cannot take the rainwater off the Parkway fast enough during moderate to heavy rainstorms. There will be a difference in the design specifications for the two scenarios (e.g., in terms of number of inlets, width of ditch etc.) For a hurricane/severe flooding event, the full AADT was used because the closure was assumed to last 24 hours. The projections are generated from two types of model simulations: the North American Regional Climate Change Assessment Program (NARCCAP) simulation and the Coupled Model Inter-comparison Project Phase 5 (CMIP5) simulation. We only had 64 summer members all of last summer, but this summer we had almost 300. Trucks are not permitted on the Parkway. These maps indicate various flood conditions, highlighting Special Flood Hazard Areas subject to inundation by the 100-Year flood, also known as the base flood. On November 6, 2012, power was restored. The Parkway segment experiences flooding due to the inadequate capacity of its drainage system to divert rainwater, and also due to additional floodwater overflows from the adjacent Saw Mill River. With further buildup of debris and/or an increased volume of water in the channel due to a storm event, the river will backup and overflow its banks. For both moderate to heavy rainstorm events and severe storms/hurricanes, not every traveler was assumed to be affected by an event. Hurricane Sandy, in the wily and savage way of natural disasters, expressed its full assortment of lethal methods as it hit the East Coast on Monday night. Westchester County Disaster Recovery Fund Distributes Hurricane Sandy Relief Grants Co-Communications, Inc. , Neighbor Posted Tue, Jun 18, 2013 at 10:35 am ET When the grass is overgrown and the ground is saturated from heavy rain, the grounds infiltration rate decreases. These two return periods were selected because the storm drainage system at Saw Mill River Parkway should be designed in accordance with NYSDOT standards, and Chapter 8 of the NYSDOT Highway Design Manual specifies that storm drainage systems on interstates and other freeways be designed for a 10-year storm frequency, with locations at sag vertical curves (curves that connect descending grades forming a bowl or sag) designed for a 50-year storm frequency. This analysis estimates the per-event economic costs of Parkway closure from two types of weather events: moderate to heavy rainstorms (assuming 3.5-hours of road closure)[11] and severe storms/hurricanes (assuming 24 hours of closure). [2] Time of concentration is a concept used to measure the response of a watershed to a rain event, defined as the time needed for water to flow from the most remote point in a watershed to the watershed outlet. Furthermore, the Highway Drainage Section (Chapter 8) of the NYSDOT Highway Design Manual specifies that highway storm drain systems shall have a design life and anticipated service life equal to 70 years. The automobile occupancy was assumed to be 1.55 persons per vehicle (USDOT). The five new settlements are with three stations in Westchester County and two stations in Suffolk County. It cost us about half a million dollars. Weve lifted several buildings in low-lying coastal areas like Rye and Mamaroneck. A Hurricane Watch is issued when hurricane conditions are a real possibility for the area within 24-36 hours. The storm drainage system on the Saw Mill River Parkway uses a design that was commonly used for roadways of the same era, but is not commonly used in the new construction of roadways today. NEW YORK As part of an ongoing probe of high gasoline prices in the wake of Hurricane Sandy, Attorney General Eric T. Schneiderman today announced that he has. Practitioners should exercise care in applying the lessons learned directly to these and any other facilities, Figure 1: Context Map for Ten FHWA Study Areas (Saw Mill River Parkway in Red). A bioswale is an engineered vegetated system that uses specific soil and plant configurations to infiltrate stormwater runoff and remove sediments and other pollutants while still providing flow conveyance. Other contributing factors are described below. These block groups are located south of the Parkway segment evaluated in this assessment, and closure of the segment could impact reverse-commuters in these areas going north towards Tarrytown and White Plains, assuming they use the Parkway. HURRICANE SANDY IMPACT ON WESTCHESTER COUNTY AND REAL ESTATE. WHITE PLAINS, N.Y. The White Plains Daily Voice is leading into the new year by counting down, in no particular order, the top 10 stories from 2012. At a press conference at the Westchester County Center, Astorino also announced the DRC will remain open until Dec. 21 on a six-day schedule. The vehicle operating cost per additional vehicle mile traveled includes the cost of gas, maintenance, tires, and half of depreciation, and amounts to $0.32 per mile (in 2012 dollars)[19]. If the minimum velocity recommended for prevention of sediment deposition cannot be achieved in the pipes (3 feet per second), they will not be self-cleaning, requiring maintenance to remove the build-up of debris. Closure of the Parkway would affect commuter traffic as it serves as a commuter route to Hudson River villages, Yonkers and Manhattan and as a reverse commute route to Tarrytown, White Plains and other destinations in the vicinity. WebSandy made landfall in Long Island and New York City on October 29, 2012 and quickly caused severe damage to much of the downstate region. Alternatives to raising or relocating the roadway include: These alternatives will help to improve river conveyance. While this strategy can lead to enhanced drainage systems in the future, it is assumed in this analysis, that this strategy will not have direct economic, environmental, or equity-related impacts on the Parkway. Shawn Dyer, Managing Partner of the Tennis Club of Hastings, saved a flagging business struggling to get back on its feet: After Hurricane Sandy, the Har-Tru on the tennis courts was completely washed away; the air structures were covered in mud from being underwater; the deck overlooking the Hudson River was gone. Hurricane Sandy barreled into Westchester on Oct. 29, bringing high winds that toppled hundreds of trees and caused coastal flooding along the Long Island Sound and Hudson River. Starting Tuesday, Nov. 27, the multi-purpose Hurricane Sandy disaster recovery center in White Plains will have new hours of operation. Lead time must be factored into the project schedule for the permitting process to be completed prior to construction. The increase in drainage area results in no significant increase in peak discharges in the Saw Mill River between Ashford Avenue and its confluence with Hudson River. The Parkway extends for 29 miles through Westchester County, New York, beginning at the border of Westchester County and the Bronx as a continuation of the Henry Hudson Parkway, and terminating at an interchange with Interstate 684 and New York State Route 35. While a quantitative estimate of the frequency of channel maintenance is not available, this frequency is believed to be low. The NARCCAP and CMIP5 simulations are based on the A2 and RCP-8.5[7] future global greenhouse gas (GHG) emissions scenarios, respectively. The flood elevation relative to the top of roadway elevation will indicate if the roadway will be inundated with water. In addition to raising the Saw Mill River Parkway, all access points to the roadway would need to be reconstructed to meet the parkways new elevation. This strategy could potentially prevent adverse impacts on mobility and the economy from disruptions to the Parkway, which would otherwise occur during moderate to heavy rainstorms. Watershed Characteristics: The complexity of the Saw Mill Rivers watershed varies by location and plays a role in triggering riverine flooding events. In late 2013, the Federal Highway Administration (FHWA) launched a study to improve the resilience of the transportation system in the New York-New Jersey-Connecticut (region to climate change and extreme weather events. The results of the model include inflow hydrographs that define inflow to the Saw Mill River at a particular location. Appendices A.1 and A.2 shows the Saw Mill Rivers Flood Profiles in the vicinity of Dobbs Ferry, NY, highlighting factors that contribute to flooding. When the debris restricts the rivers flow, water is no longer effectively conveyed in the channel. In discussions with NYSDOT, it was agreed to take a low risk-tolerance (conservative) approach and focus on the high estimate (90th percentile) projections for precipitation events in this assessment. We have a brand new boardwalk at Playland, and things are back to normal. WHITE PLAINS, NY: Westchester County Clerk Timothy C. Idoni wants to reassure Westchester County residents and business owners not to worry about replacing vital records such as deeds and mortgage Those penalties come on the heels of more than $300,000 penalties imposed on 47 other businesses for illegal gouging after Sandy. Located at the County It should be noted that while a detention or retention basin would be appropriate to mitigate the flows of local drainage entering the Saw Mill River, it may not be an adequate solution to mitigating flows during moderate or high intensity storms, which typically require significantly larger storage ponds. This total cost includes $350,000 of construction costs. During a later storm event, the water surface elevation rises, but there is no flooding. The curb openings get blocked with debris and the rainwater ponds, flooding the Parkway. During closures of the Saw Mill River Parkway, detour time and additional cost are incurred by motorists, who would need to drive an additional distance via the parallel routes. The proposed drainage system with asphalt ditches could have an environmental impact at the outlet, depending on where the system discharges. The estimated detour distance and delay time as a result of disruption to the Parkway segment are approximately 3 miles and 9 minutes respectively. The system must meet stormwater quality regulations, and coordination would be required with the New York State Department of Environmental Conservation to obtain the necessary water quality certification. The time of the detour is 5 minutes without traffic; however, due to the storm events and additional traffic on the alternate route, a time penalty of 80 percent was applied to arrive at the estimate detour time of 9 minutes per auto. The company is working closely with the New York City Office of Emergency Management, the Westchester Office of Listen 0:27 Westchester County is being reimbursed for some of the cost of removing debris from Hurricane Sandy. See Figure 1 for a context map of all 10 study areas, with the Saw Mill River Parkway study area highlighted in red. 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