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Friday, October 21, 2022

波士頓市綠色基礎設施新政 先從人行道路邊開始

波士頓市長吳弭 (Michelle Wu)。
                   (Boston Orange 編譯) 波士頓市長吳弭 (Michelle Wu) 1021日率同新任綠色基礎設施主任Kate England等人,在東波士頓宣佈波士頓市歷來的首個綠化基礎設施 新政,規定某些小規模基礎設施工程符合5種設計標準及維修資源。

                吳弭市長表示,這一新政將為波士頓市的道路基礎設施訂定更安全,可持續的新標準,改善社區安全,培養社區參與,增加環境韌性。

波士頓新任綠色基礎設施主任Kate England。
                 轄區包括東波士頓的麻州參議員Lydia Edwards,麻州眾議員Adrian Madaro這天也都出席了宣佈會,稱許吳弭市長這一新政嘉惠社區。

波士頓市街道長Jascha Franklin-Hodge。
                這新的綠色基礎設施政策將要求在人口密集,人行道及道路空間有限的地方,擴大採用須遵循5項設計標準,包括必要配套維修資源的小型綠色基礎設施,以減少雨水氾濫,增加地下水補給,過濾水中雜物,進而獲得增加市區樹蔭,紓緩熱島效應,加強生態多元性等效果。

               適用於路邊延伸的新政策,也被稱為 neckdowns, bulb-outs, or bumpouts,藉由減少從街道一邊跨越到另外一邊的距離來防止車輛停得太靠近行人穿越道,讓駕駛更容易看見行人,改善人行道安全。

              波士頓市街道長Jascha Franklin-Hodge表示,新設計標準將容許行人穿越街道更加容易,為城市增加更多綠化空間,改善生活品質。

麻州參議員Lydia Edwards。
             綠色基礎設施主任Kate England表示,把綠色基礎設施作為標準,融入市府工程項目將有助於減少雨水氾濫,創造新的綠色空間,為鄰里提供更多樹蔭。波士頓市還將推出志工計畫,給市民機會維護這些新設施, 一起努力綠化波士頓。

             Kate England還說,波士頓市府將發包安裝多孔設施,景觀維護等2項特定的綠色基礎設施維修合約。

麻州眾議員Adrian Madaro。
               5項設計標準分別為,以雨林花園,生物沼澤形式延伸路邊的道路權(Right-of-way)生物滯留;以浸潤方式延伸路邊綠化基礎設施的滲透樹坑/滲透樹溝;採用多孔瀝青,透水鋪設,多孔鋪設,多孔混擬土板的多孔鋪路;石頭表面透水區域的表面透水區;用植物、生長很慢的羊茅或野花混和播種過一次的一次播種等。

             波士頓市長辦公室表示,這天宣佈的綠色基礎設施新政是吳政府實現承諾,創造有韌性社區,因應氣候變化影響的行動之一。


MAYOR WU ANNOUNCES NEW ENVIRONMENTAL STANDARDS FOR CITY INFRASTRUCTURE, REQUIRING USE OF GREEN INFRASTRUCTURE 

 

Internal design standards will embed environmental benefits into certain future City of Boston public infrastructure

BOSTON - Friday, October 21, 2022 - Mayor Michelle Wu today announced a new policy to require that certain City projects include environmental benefits and stormwater mitigation through the use of green infrastructure. The policy establishes five new standard designs and the necessary accompanying maintenance resources to expand the implementation of small-scale green infrastructure installations in Boston. In dense urban areas where space in public sidewalks and roadways (referred to as the right-of-way) is limited, small-scale green infrastructure (GI) can be effective in reducing stormwater flooding, promoting groundwater recharge, and filtering pollutants from runoff. Additionally, green infrastructure has numerous co-benefits, including increasing urban tree canopy, mitigating urban heat island effect, and enhancing ecological diversity. 


“Today we are announcing Boston’s first ever green infrastructure policy and in doing so setting a new standard for safer, more sustainable roadway infrastructure throughout the city,” said Mayor Michelle Wu. “Together these elements will improve community safety, foster community engagement, and boost our climate resilience.” 


This new policy will apply to curb extensions, also known as neckdowns, bulb-outs, or bumpouts. Curb extensions improve safety at crosswalks by reducing the distance to cross from one side of the street to the other and preventing vehicles from parking too close to crosswalks, making pedestrians more visible to drivers. Curb extensions can also be used to ensure that crosswalks are accessible for people with limited mobility or in wheelchairs. Due to Boston’s compact nature, curb extension projects often result in the creation of small spaces not suited for other uses. Historically, these spaces have been paved with impervious materials. 


“These new design standards will allow the City to continue enhancing our streets as public spaces for everyone,” said Chief of Streets Jascha Franklin-Hodge. “These curb extensions help keep our neighborhood safe by slowing cars and making street crossing easier for pedestrians and now they can also benefit our quality of life by providing more green space in our City.”


“Integrating green infrastructure into the City's projects as a standard will help us reduce stormwater flooding, create new green space and provide more shade in all of our neighborhoods,” said Kate England, Director of Green Infrastructure. “We are also excited to introduce a volunteer program that will foster stewardship by creating opportunities for neighbors to come together and take care of these new features.”


“Innovative green infrastructure policies offer an additional pathway to adapt to the impacts of climate change, such as stormwater flooding and sea level rise, while making our communities more resilient," said Reverend Mariama White-Hammond, Chief of Environment, Energy and Open Space. "I am excited to support these new design measures that will bring us closer to our collective goal of being a Green New Deal city."


The purpose of this policy is to aid the City in implementing preferred GI alternatives to current design practices and ensure adequate maintenance so that GI can be integrated as standard practice into large-scale capital projects in the future. The five design alternatives are as follows: 


  1. Right-of-way (ROW) Bioretention: Curb extensions may incorporate green infrastructure in the form of Rain Gardens, Bioswales, etc.
  2. Infiltration Tree Pit/Tree Trench: Curb extensions may incorporate green infrastructure in the form of Infiltration Tree Pits or Infiltration Tree Trenches.
  3. Porous Paving: Curb extensions may incorporate Porous Asphalt, Permeable Pavers, Porous Paver Installations, and Porous Concrete Slabs.
  4. Subsurface Infiltration Area: Curb extensions may incorporate Stone Subsurface Infiltration Areas (with or without perforated pipe). 
  5. One-time Seeding: The area within the curb extension may be seeded once with a groundcover, low-grow fescue or wildflower mix. 


Additionally, to help support the longevity of green infrastructure, two GI-specific maintenance contracts will be available for maintenance on new and existing public GI installations. The first is a contract for maintenance on porous paving installations. The second is a contract for landscape maintenance on “green” infrastructure features. These two contracts will provide much needed regular maintenance, including regenerative air vacuum sweeping for porous paving, as well as vegetation maintenance, replacement, and pruning for GI features in the right-of-way. They will also provide the flexibility required to perform maintenance as needed or requested by residents through the City’s 311 system.


The policy will also establish a volunteer program to assist in the maintenance of select GI sites. Prospective volunteers will be able to sign up through an online portal to “adopt” a GI feature. This program will allow volunteers to aid in litter removal and/or seasonal cleanups for GI features where they live, work, and play. 


This infrastructure will complement the City’s network of nearly 36,000 catch basins connected to roughly 600 miles of pipes beneath our streets, which is maintained by the Boston Water & Sewer Commission. 


Today’s announcement builds on the Wu administration’s commitment to creating resilient communities while adapting to the impacts of climate change. Green infrastructure is a key component of the recently released Urban Forest Plan, which includes strategies to bolster the City of Boston’s tree canopy while enhancing the livability and public health of Boston’s neighborhoods. Curb extensions will be a common tool in implementing the Mayor’s vision for safer streets, announced in September.

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