Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. lindbls

    Vactor Waste Facility Design

    I'm looking for guidance documents/design information on planning, designing and constructing a vactor waste facility (i.e., a facility to dispose of waste removed from stormwater catch basins and lines). Is there EPA or state agency guidance on this issue? I've looked but come up empty.
  2. lindbls

    Removing Bacteria from Stormwater

    The county (my employer) is concerned that any further loading of bacteria will be a degradation of the salt water. I'm checking now to see if the DOH letter cited a likely source of the bacteria. And, unfortunately, infiltration is not an option (high groundwater and tight soil).
  3. lindbls

    Removing Bacteria from Stormwater

    Is it practical to remove bacteria from stormwater runoff, given the following conditions: The runoff is from a proposed 7-lot, rural residential development; The site soils are primarily clay, with a very high groundwater table (i.e., no infiltration); The runoff drains to a county ditch...
  4. lindbls

    PE stamp stormwater conveyance

    Right on the mark dicksewerrat! It is all in how it's approached...one of the main reasons for pursing this was to be sure the crews were "ok". If not, then we need to change procedures. Our agency engineer said, unless the maint crew is changing something, an engineer does not get involved...
  5. lindbls

    PE stamp stormwater conveyance

    In the state of Washington, I'm looking for the law (RCW or WAC) where it's required to have a PE design and stamp utility construction within a public road and through public easements...specifically, stormwater infrastructure. The specifics: An existing stormwater system was not performing...
  6. lindbls

    More infiltration questions

    What's the area going to be use for post-development above the infiltration beds? If just an open space with little or no traffic, check out the "Invisible Structures' Rainstore3" (http://www.invisiblestructures.com/)or similiar system. They are a stackable system of interlocking grids-I...
  7. lindbls

    Erosion at Stormwater Pipe Outfall in Marine Waters

    I work for a local government in Puget Sound, WA. We have numerous stormwater outfall pipes that, at one time, discharged to the edge of a marine bluff (the marine bluff could be anywhere from 2 ft to 50 feet high). Over time, the bluff has eroded into Puget Sound, but the pipe now remains...
  8. lindbls

    Stormwater quality from metal recycling pad.

    We have no existing water quality data. The existing recycling area is flat area on native soil. There is no collection. As we construct our new aphalt pad to stockpile the metal on, we'll begin collecting runoff data for analysis. We'll base a decision on how to handle the water once we do...
  9. lindbls

    Stormwater quality from metal recycling pad.

    I'm looking for information on the quality of runoff from a asphalt area used to temporarily stockpile recyclable metal. We're evaluating how best to handle this water. Can we treat the water using stormwater treatment technologies ("Stormfilters", wet ponds, bioretention facilities, etc), or do...
  10. lindbls

    Stormwater Conveyance on Steep Slopes

    The site is a marine bluff with a residential subdivision on top and a salmon-bearing stream below. The bottom 3/4 of the slope, the stream, and the tidally-influenced wetland across the stream are all part of a US Fish and Wildlife refuge (think federal property, permits, timelines, etc.) Like...
  11. lindbls

    Stormwater Conveyance on Steep Slopes

    The slope is about 1:1. And yes, anchoring will be a challenge in the existing soil. Any suggestions?
  12. lindbls

    Stormwater Conveyance on Steep Slopes

    What's the best way to get water to the bottom of a bluff w/out eroding the whole slope? I work for a county public works department and am dealing with a stormwater outfall on a steep slope. Currently, a perforated 12" pipe carries stormwater runoff from a catch basin in a county road to the...
  13. lindbls

    In-house Contracts for Engineering Services

    Thanks for the great responses above.I admit I am surprised at how common it seems. If my boss does require this "Agreement", I will accept it and will be able to live with it. One (of my many) concerns is that the scope of work will be so tight, there will have to be contract amendment after...
  14. lindbls

    In-house Contracts for Engineering Services

    I'm the engineering manager for a public works agency. Our department includes four teams that report to one director. I've been asked to create and use an engineering services agreement on projects with other managers. This would be a document signed by both me and the manager we are working...
  15. lindbls

    Problems with joint mortar?

    We've had reports from our stormwater O&M staff that there have been problems with the use of "Jet Set" mortar for grouting catch basin risers, pick holes, and stormwater pipes into catch basins. They have indicated the mortar is flaking off, falling off, and in general is not holding up well...
  16. lindbls

    Book Review?

    Has anyone read the book: "The Lead Dog has the Best View-Leading your Project Team to Success" by Gordon Culp and Anne Smith. It looks intriguing, but I'd like a recommendation before purchase. Thanks.
  17. lindbls

    Pond Embankment Design

    Thanks for the great feedback. Unfortunately, the downstream slope of the embankment will be 2H:1V, not 4H:1V as mentioned in the original post. The upstream side of the pond will still be 3H:1V. A pretty important "typo"!! The embankment constructed using DOT Standard Specs for Select borrow...
  18. lindbls

    Pond Embankment Design

    I will have a stormwater pond constructed on gently sloping ground, bounded in part by a soil embankment, the other sides will be cut into existing ground. The interior and exterior slopes need to be between 3:1 and 4:1 to obtain the storage volume I need and the max slope for safety reasons...
  19. lindbls

    Interview Questions

    I'm going to be interviewing candidates soon for a licensed civil engineering position with the County government I currently work for. I'm seeking some creative interview questions that help gauge a persons qualifications, experience and ability to work effectively in a team environment. The...
  20. lindbls

    Raingardens for Stormwater Treatment

    My County department has been asked to consider allowing the use of Raingardens as primary treament for stormwater runoff. We expect we are receiving this interest because they can be seen as a more attractive alternative than swales or wetponds (currently allowed per our Drainage manual). Have...

Part and Inventory Search

Back
Top