Construction Stormwater Inspections
Inspections part 2
Estimated read time: 1:20
Summary
This video focuses on the processes involved in conducting construction stormwater inspections, emphasizing the importance of adherence to permits. It illustrates common scenarios on construction sites, such as tracking dirt into streets, lack of perimeter controls, and inefficient installation of bio logs. Regular checks of discharge points, perimeter controls, and various Best Management Practices (BMPs) are highlighted as crucial. Proper maintenance and timely actions are stressed to prevent erosion and ensure compliance. The video concludes by addressing vegetative growth expectations post-hydromulching and suggests appropriate actions based on growth observance.
Highlights
- Tracking in the street indicates the need for immediate cleanup as per permit timelines 🕒
- Rock exits need maintenance if they're allowing dirt to leave the site ⛏️
- Inspect perimeter controls even if the site seems dirt-free 🛡️
- Bio logs not installed correctly can lead to erosion problems 🌊
Key Takeaways
- Inspect discharge points for off-site dirt tracking to maintain compliance 🕵️♂️
- Perimeter controls need regular checks and maintenance to prevent site issues 🚧
- Proper installation of BMPs is crucial to avoid inefficiencies 🌱
- Monitor vegetative growth timelines post-seeding to ensure plant establishment 🌿
Overview
Inspections on construction sites are crucial for stormwater management. Permit adherence and site condition checks prevent environmental impact. This video showcases inspection scenarios highlighting our role in keeping things clean and compliant!
From tracking dirt on the streets to evaluating bio log setups, the video provides practical insights. Identifying and fixing issues from the get-go is key. Remember, it's all about ensuring our surroundings stay as dirt-free and orderly as possible.
Utility in practice—our inspections go beyond observation. Timely responses, like reseeding when plants don't grow, keep projects on track. Our vigilance helps foster a sustainable construction environment and upholds regulation adherence!
Chapters
- 00:00 - 00:30: Introduction to Construction Storm Water Inspections This chapter introduces the concept of construction storm water inspections, explaining their purpose and importance. It hints at a practical approach by discussing the potential for a mock inspection. The emphasis is on inspecting discharge points, downstream, and off-site areas for any signs of dirt or environmental impact. This sets the stage for understanding real-life applications and nuances in conducting these inspections.
- 00:30 - 01:00: Example Inspection 1: Street Tracking and Rock Exit In this chapter, the focus is on the process of street tracking and the condition of a rock exit during an inspection. It highlights the necessity for street cleaning within the permitted timeframe and points out the poor condition of a rock exit that allows dirt to spread offsite. The importance of maintaining these elements within the designated timeframe is emphasized.
- 01:30 - 02:00: Example Inspection 2: On-site and Off-site Impacts The chapter "Example Inspection 2: On-site and Off-site Impacts" discusses inspecting construction sites for compliance with stormwater permits. It describes a scene where dirt on the road is minimal and suggests actions like street sweeping. Additionally, it notes the presence of a construction exit that indicates efforts to control stormwater and sediment.
- 02:00 - 02:30: Inspection of Perimeter Controls The chapter titled 'Inspection of Perimeter Controls' discusses the evaluation of potential off-site impacts when visiting a construction site. The observation highlights several notable issues: dirt has been displaced from the site, indicating significant off-site impacts, a lack of a construction exit, and insufficient perimeter control measures. These points are emphasized as critical issues that need to be recorded and addressed.
- 03:00 - 04:00: Issues with Bio Logs In the chapter titled "Issues with Bio Logs," the discussion centers around inspecting perimeter controls, particularly in a situation where they are in disrepair. The example given describes arriving at a site where the fencing is no longer attached to the stakes, indicating a need for maintenance. Though the dirt is not currently escaping, the lack of proper attachment signifies a problem that needs addressing to ensure perimeter integrity.
- 04:00 - 05:00: Inspection of BMPs: Inlet Protection Device This chapter discusses the inspection of Best Management Practices (BMPs), specifically focusing on an inlet protection device. There is a concern about a fence being down, which needs timely maintenance as per the construction stormwater permit requirements. The inspection noted no visible issues with dirt leaving the site, thanks to the flat ground on both sides. However, a problem was identified with the installation of bio logs, indicating that while visible dirt issues aren't present, installation and maintenance are critical for effective BMPs.
- 05:00 - 05:30: Hydromulch Application The chapter discusses the proper application of hydromulch, with a focus on the correct placement of logs to prevent soil erosion. It highlights common mistakes such as logs not being placed close enough together or overlapped, which can lead to erosion as soil will easily slip between them and render them ineffective. The chapter seems to emphasize the importance of proper installation for effective erosion control, using an example where a bio log is not correctly installed.
- 05:30 - 06:30: Monitoring Seeded and Blanketed Areas The chapter titled 'Monitoring Seeded and Blanketed Areas' discusses the maintenance and functionality of BMPs (Best Management Practices) in managing dirt and soil in specific areas. It highlights the need for ongoing maintenance, as dirt accumulation has been observed both in front of and behind logs used for containment. Although the current BMPs are still functional, there are visible signs that indicate maintenance is required to ensure they continue to perform effectively.
- 06:30 - 07:30: Addressing Lack of Vegetation Growth The chapter discusses the ongoing inspection process, focusing on checking off-site discharge points and perimeter protection. It highlights the importance of examining other BMPs (Best Management Practices) like inlet protection devices, stressing the need to inspect them regularly. If these devices are half full, they require cleaning to maintain effectiveness.
- 07:00 - 07:30: Conclusion and Next Steps in Inspection The chapter discusses the inspection of a collection bag and highlights the importance of ensuring proper installation. It notes that although there are some leaves in the bag, there is still substantial room for additional sediment, suggesting it is functioning efficiently. The chapter emphasizes checking that the back of the trap is flush against the grate and the curb to ensure it operates correctly and mentions the possibility of reseeding the area for better functionality.
Inspections part 2 Transcription
- 00:00 - 00:30 so now that we've talked about what construction storm water inspections are and why we do them we can talk a little bit about an example inspection or perform a mock inspection you'll recall we said that when you come upon the site you'll want to inspect discharge points and downstream off-site areas for signs of dirt or impact so if you come upon the construction site and you see something that looks
- 00:30 - 01:00 like this you've got tracking in the street you know first of all that the street will need to be cleaned and that needs to be done within the time frame specified in the permit also you'll notice that this rock exit here is probably not in very good shape if it's allowing all of this dirt to travel off of the site so that will also need to be maintained within the time frame specified in the
- 01:00 - 01:30 construction stormwater permit if you come upon a site and it looks like this you'll see while there's a little bit of dirt in the road at this site right here if you're inspecting this one it's not looking too bad you may need to do a little street sweeping but you do see that there is a nice construction exit that has been put into place
- 01:30 - 02:00 you come to this site here and you look for off-site impacts and you can see we have quite a bunch of dirt that has left the site so you know that there are off-site impacts here we do have something going on we don't have a construction exit here and we also don't see much in the way of perimeter control these are all things that will need to be noted
- 02:00 - 02:30 the second thing we mentioned that you'll probably want to do when you are inspecting is to inspect all of the perimeter controls so if you come upon a site and it looks like this you know that there are problems on the site our fence is no longer attached to the stakes so maintenance is needed while we may not have dirt leaving this
- 02:30 - 03:00 site because the fence is down it needs to be maintained and it needs to be maintained within the time frame specified in the construction storm water permit this picture is a little bit different we don't see any issues per se with dirt leaving the site you can see we've got dirt it looks like it's pretty flat ground on both sides but the problem here was the installation job of the bio logs
- 03:00 - 03:30 you can see if you can get someone's foot between them that the logs are not butted up next to each other well or overlapped so when erosion begins to occur that dirt is just going to go straight between those logs and the logs are going to end up being ineffective here's another example if you come upon this site you can see that this bio log that's in
- 03:30 - 04:00 place is doing a good job of holding back all this dirt but we see that maintenance is needed because there is a bunch of dirt behind here while we may not have any dirt in the curb and gutter you can see we're starting to have some dirt behind the log or in front of the log as well as behind the log so maintenance is going to be needed at this point though we do still have a functional bmp
- 04:00 - 04:30 continuing on with the inspection after looking at off-site discharge points looking at perimeter protection you'll want to look at the other bmps that have been installed for example an inlet protection device always peer into the inlet protection device and see if it is overly full once it's about half full it will need to be cleaned out in this
- 04:30 - 05:00 case we've got some leaves here but if you look inside the bag you can see that there appears to be enough room for more sediment to be collecting in the bag you'll want to make sure that it is also installed properly in this case that this back portion is flush up against the grate and the curb head excuse me and that it will function appropriately you could probably do a little reseeding here of this
- 05:00 - 05:30 inlet protection device in this case we have a site that has been hydromulched you'll recall we said that when hydromulch is installed it needs to be installed at 100 percent ground coverage this does not appear to be 100 percent ground coverage so additional hydromulch applications may be requested
- 05:30 - 06:00 here's an area where a hole was dug for a pipeline and the area was seated and blanketed it was blanketed one week ago while we don't see any vegetative growth coming through this blanket at this point in time we don't really expect necessarily to see much growth so we may just take a photo and document and say yep
- 06:00 - 06:30 this has been blanketed we're hoping that this grass is going to grow and we'll keep looking at it weekly if you come back to a site and week after week after week you don't see any vegetative growth like for this site where again this is a pipeline project where we have a area here where there was a hole that was dug it was seated and blanketed but that was
- 06:30 - 07:00 two months ago and we don't see any growth while in this previous picture here we say we probably should give it some more time we don't expect vegetation to have grown within a week we do expect to have seen vegetation grown by this point in time within two months if there's not vegetation grown then we probably need to remove that blanket maybe do some top dressing reseed it re-blanket it and then continue on with inspections remember to pay
- 07:00 - 07:30 attention to the time frames that the permit says that things have to be completed by in the next module we'll continue with our mock inspection