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    Thursday
    Aug272015

    Mark Your Calendars - EC BMP Summit at Shasta College, Nov. 13-14

     

    Another BMP Summit to be held at Shasta College Erosion Control Training Facility on November 13 - 14. 

    More information coming soon. Please share these dates with your colleagues and friends.



    For additional information contact info@salixaec.com.

     

     

    Thursday
    Aug202015

    HYDROMULCH & COMPOST STUDY REVISITED  

     

     

    We are considering doing even more ‘application and performance’ studies and demonstrations at the Shasta College Erosion Control Training Facility In the near future.

     

    A couple of new and innovative products we are considering are a recycled polyethylene wattle (remember the DuraWattle was demonstrated at the Erosion Control BMP Summit back in May) and I discovered a newly engineered “rumble-strip-type” construction entrance.   Several manufacturers/vendors have been referred lately to us to do “trials” or studies at Shasta College at our future summits.
    Please let us know if you’d be interested in attending and or exhibiting at the SECOND Shasta College BMP Summit!  We, SC, SWAG, and WCIECA are planning another one for this winter.  Interested ?   Please contact Jeni@salixaec.com to be put on our “interested list"                                                                          
                                                                             
    link: http://watchyourdirt.com/watchyourdirt-erosion-control/2015/5/11/our-bmp-summit-was-a-huge-success.html and “friend” us at https://www.facebook.com/WatchYourDirtTV “)                                                                                     
    We have some plans to test the mychorrizae fungi applications in establishing native grasses.
     Information, specifications, and guidelines for Using and successfully establishing CA native grasses is a Huge issue given the ‘Drought” and the concept of sustainable erosion control for construction sites only makes sense when you consider that the Construction General Permit  requires (favors) permanent vegetation establishment to get your Notice Of Termination.
    There is also a lot of discussion out there about pre-packaged hydraulic growth medium-type hydromulches with “biotic soil enhancers” and how these products can supplant the need for compost or topsoil applications.  I’d like to do some side-by-side comparative studies on our TEST SLOPES.                        
     
    Here are some photos how the Shasta College Erosion Control Training Facility looks currently.

      

    Here are some photos from the Hydromulch-compost study from 2009/2010.

    In the study we looked at the accuracy in the anecdotal theory that "high rates of BFM (4000#/ac) would reduce seed germination and grass establishment."  We constructed approximately 20 plots that has uniform soil prep (trackwalking), broadcast mychorrizae uniformly, then manually applied the CA native seed blend to the soil surface at a rate of 20#/ac.   The seed was then covered with several kinds of commonly used hydromulches - Soil Guard, Flexterra, TeraMulch, hydrostraw, and a cotton mulch. The study is available for free download by scrolling down to NAVIGATION and clicking on WYD Files.

    The plots were visually monitored for photodocumented for density of plant establishment during that first Winter, Summer, and the following Fall seasons. We documented NO discernible ill effects from higher rates.  Actually just the opposite!!! was true.  

    That particular winter had unusually intense storms and the lower rates of hydromulch resulted in quite a bit more erosion - there were small deltas of fine sediment observed at the bottom of the 2000#/ac plots, irregardless of mulch brand.  Subsequently we observed less vigorous and dense establihment on those 2000#/ac plots.

     Note the compost plot on the left, this is just two months after application.

    What is most significant is that we also applied a compost blanket 2" thick.  There was NO reduction of seed establishment, if fact the compost blanket grew the BEST grass, both by covering seed with 2" of compost and by gently raking the seed into the surface - there was no dicernable difference. 


     Hope you enjoy and hope this paper somewhat "lays to rest" the notions that Compost Blankets at 2"-thick and BFM at 4000#/ac will smother seeds.    We must, as EC Specialists, find a balance between veg establishment and effective erosion control during the establishment period.    

    Another observation made at this trial was that weeds did not become established on the plots, even though weeds grew almost everywhere else!  My personal hunch is that adding mychorrizae made the difference.  My theory is that California native, mychorrizal-dependant grasses and mychorrizae will "out compete" many of the commom noxious weeds. This could be another comparative study!!  Native grass establishment with and without mychorrizae. 

    Another potential study will be to do side-by-side comparisons of compost and the "new" biotic soil formulated hydromulches.  These hydromulches could prove to be cost-effective over compost.  Let's try it!!


    Thursday
    Aug132015

     

     

    Bio Draw 3.0 is an interactive cd which describes design and installation procedures for 38 biotechnical soil stabilization techniques, along with 39 typical drawings of soil bioengineering techniques.       

     (click here for Sample Typicals)            

     

    CAD & Microstation compatable, all Illustrations and typical drawings are available in dwg. (Auto-Cad) and .dgn format                                                                

     

     Incorporate Live Vegetation... 

     All erosion control techniques presented incorporate live vegetation.  Bio Draw is intended to help solve engineering problems while meeting the ever-increasing environmental demands prescribed by sensitive ecosystems.  NPDES Phase II compliant!

     

     ‘Soft’ BioEngineering...

    Bio Draw describes in detail a series of "soft" bioengineering techniques and practices such as LIVE FASCINES, LIVE POLE DRAINS, COIR ROLLS WITH BRUSHLAYERING, POLE PLANTING, MODIFIED BRUSH LAYERS, BRUSH MATTRESSES, and MORE!   (click here for Sample Typicals)

     

    Before & After Illustrations...

    The Bio Draw CD is liberally illustrated with "before" and "after" photos of real case studies which describe various installation steps for each technique.  Clicking on the photos will expand them so details can be readily observed. 

     

    Proven & Tested Practices...              

    All of these practices have been implemented and monitored for their effectiveness by bioengineering practicioners! 

     Bio Draw 3.0 is the most credible and comprehensive bioengineering compendium in the erosion control industry today!

    Available for purchase at the WatchYourDirt Shop

     

    Drawings & So Much More...

    Not only do you get CAD drawings and construction specifications, but you also get comprehensive information for all aspects of biotechnical projects, such as the principles, rationale, and planning for a bioengineered approach.  

    The BMPs are conveniently separated into "Soil Bioengineering and Biotechnical Stabilization Practices (Ground Bioengineering)" and "Biotechnical Streambank Stabilization (Water Bioengineering)".  

    Many informative photos accompany each BMP, showing installation procedures along with "before" and "after" shots of case studies.  Each colorful photo can be portrayed in a larger view with the click of your mouse.   (click here for Sample Typicals)

     

    Easy to Use..

    The CD is user-friendly, and it's as easy as navigating through this website.  Technical support is also readily available if needed.

     

    Available for purchase at the WatchYourDirt Shop

    COPYRIGHT © 2010, BLINKWORKS. ALL RIGHTS RESERVED.

     

    Wednesday
    Aug052015

    Forester University & Dirt Time - Sediment & Erosion Control Training

    Sediment and Erosion Control Training: Forester University & Dirt Time

    Watch a video, take a quiz, and earn CEU and PDH credits courtesy of Forester University and Dirt Time Videos. Select from five different OnDemand eLearning training packages offering sediment and erosion control field technique, best practices, and management training. Hosted by John McCullah, each training video is an on-the-job look at the theory, application how-to, and best management practices needed to improve your knowledge and skills and enable you to earn CEU and PDH credits to maintain your contractor certification*.

    OnDemand eLearning packages include: the Full Dirt Time Training Package, Best of Dirt Time Training, Erosion Control & Soil Stabilization, Runoff Control & Channel Protection, and Bioengineering & Stream Bank Stabilization.
     
     

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    https://youtu.be/WbfXCBr5nQ4

     

    Thursday
    Jul302015

    TIPS OF THE WEEK

    We will be periodically posting and sending out "Tips" to help you select and apply BMPs in the most effective manner.  These tips are based on my experience - Iv'e actually built them, monitored the applications, and then given a lot of thought on how to make them better.  This is my opinion only.

    This BMP Toolbox is a concept I use for teaching Been waiting 25 years for runoff to flow "through" a straw bale!! If you want effective sediment control then think - "Stokes Law".Even the best geotextiles will "blind" and plug up, then you end up ponding water or they fail. Ask yourself, does a silt fence actually "filter" sediment-laden runoff?