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  • Users: lindbls
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  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

    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...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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.
  10. 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...
  11. 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...
  12. 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...
  13. lindbls

    "De-Constructing" Roads and Dams?

    I've had a professional and personal interest working on projects decommissioning roads, unused logging roads in particular and/or removal of dams- a "de-construction" of sorts. It's a small part of the civil engineering field I'd love to work in. Unfortunately, I suspect there's not a lot of...
  14. lindbls

    Extruded curbing vs precast concrete curbing

    I'm working on a grading plan of a satellite solid waste transfer station (actually a "drop box" facility). I have two luminaires to be placed within the main driving area. To protect the luminaires from traffic, I'm planning on installing barrier-type curbing. The total length of the curbing...
  15. lindbls

    Wind Effects on Truck Scales

    I'm working with four above ground, low profile truck scales (bottom of the scales 7-18 are inches above grade). Wind effects appear to be causing fluctuations on the readings up to 600 lbs, both positive and negative, with or without traffic on the scale. Fluctuations occur regardless of wind...
  16. lindbls

    Wind Effect on Truck Scales

    I'm working with four above ground, low profile truck scales (bottom of the scales 7-18 are inches above grade). Wind effects cause fluctuations on the readings up to 600 lbs, both positive and negative, with or without traffic on the scale. Fluctuations occur regardless of wind direction. The...

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