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Winter is Coming: A Quick Guide for Your Stormwater BMPs in Cold Climates

该leaves have changed and snow is beginning to fall in several places across the country. By this time, construction projects are frantically trying to wrap up grading, landscaping, and other outdoor tasks. But is your project overlooking a big stormwater task during this season?

正如我们所知道的,美国北部冬天可以是残酷的,雪,或轻度,没有雪。准备您的网站来处理冬季将大大降低风雨泡最佳管理实践(BMP)维护,并换取春季更快地重返工作岗位。以下是一些提示和技巧项目所有者和主管都应该考虑:

最好的冬季BMP是建立植被。考虑在冬季准备您的网站时萌发时间。

2.种子和卷曲稻草是一个推荐的临时稳定技术,用于几乎所有场景。在冷冻条件之前,请确保秸秆被正确卷曲成解冻的地面。10月15日TH.是完成冬季准备稳定土壤的关键日期。

一个。如果冬天已经禁止了你,仍然需要稳定,但技术变化。在地面冻结后,压接是困难或不可能的。该明尼苏达州雨水手册在雪地里有一些伟大的资源,在那里他们详细介绍了冬季后如何稳定。

3. For projects in urban environments, evaluate your ability to move curbside perimeter controls (such as silt fence and filter logs) away from the curb to minimize snowplow damage.

4.考虑在整个项目网站(如果需要)中将存储雪的犁路线和位置。确保周边控制不会被损坏,因为雪堆生长和熔化径流可能会集中和压倒性BMP。

5.如果您的网站上发生打磨和/或腌制操作,请将下游累积效应视为未完全建造或建立的植被,土壤和永久雨水管理特征。在冻结之前,可能需要安装从这些区域转移流量的潜在升级BMP。

6. Clean your streets before any chance of freezing or snow. Sweepers and vac-sweepers are not able to work during the winter months. Skid-steers can be used to clean sediment from roads in the winter.

7. If your project is in Minnesota, inlet protections must remain installed throughout the winter. Several cities, counties, and watersheds have their own regulations that require inlet protections to be removed by certain dates, most are November 15TH.

一个。明尼苏达污染管制局确实允许临时删除入口保护,如果冻结,可以创造公共安全问题。
湾如果移除任何入口保护,或者将BMPS移动或移除,则需要SWPPP中的文档。

8.检查可以暂停 - 如果没有发生地面干扰,您的网站已经冻结了地面条件。但是,如果发生热身,每周检查确实需要再次启动。

一个。此外,如果地面条件仍然冷冻,但在发生事件的24小时内需要一天或两两天的温暖天气 - 在径流之后或暴风雨的事件检查之后。径流被定义为在足以通过周边控制或永久雨水系统从现场排出的沉淀或熔体水。

雨水BMP.
From the MPCA: Maintenance should continue through the winter months to ensure that inlet protection BMP is functioning properly.

Navigating the needs and requirements of your site through the winter is a handful, let alone the NPDES permit itself. If your project requires any assistance with planning, preparation, inspection, or more, please feel free to reach out. Braun Intertec and our certified inspectors would be more than happy to lend a helping hand.

杰米代顿员工科学家,雨水专家

P:952-995-2000.

特拉维斯疯狂,PWS集团经理,高级科学家

P:952.995.2027