Sheetflow Construction Turbidity, Erosion, & Sediment Control

February 16, 2019

Vacuum Sweeper Maintenance

If I specify a vacuum sweeper on a construction project, I expect it to be operational.

I require all systems to be functional per manufacturers specifications.

If not, the sweeper goes away, maybe the job is shut down, until a working sweeper is brought to the site.

Specifications:
1) Power brooms shall not be utilized without prior approval by
the Engineer.

2) Contractor shall have sufficient working vacuum sweepers on
site at all times work is being performed.

3) All sweepers shall have on-board water spray systems that
shall be operating at all times.

4) systems shall function per manufacturer specifications
including, but not limited to, spray water systems, blowers,
vacuum nozzles, hoses, debris hopper, hydraulics and
electrical.

5) At no time shall debris hopper seals leak debris and liquids.

February 2, 2019

Why Power Brooms are a Bad Idea

Filed under: Video — Tags: , , , , , , — Sheetflow @ 10:13 am

As you can see, these types of sweepers don’t pick up dirt and sediment from asphalt, they just spread it around.

Water spray system attachments help some but then the sweeper mostly turns the dirt to mud and smears it around.

These are useful for picking up gravel and sand.

A vacuum sweeper is the way to go.

January 14, 2019

Bonded Fiber Matrix BFM Needs to Cure Before it Rains

Bonded fiber matrix (BFM) needs to dry for 24 to 36 hours before it rains or else it can start to wash off.

December 2, 2018

Construction Erosion Inspection Hog Fuel Mulch Prevents Fugitive Dust

You are hauling dirt on a dry day and the dust is flying.
The water truck driver’s head is about to explode trying to keep up with the dust control.
Save yourself a Labor and Industries claim!
Use ground up vegetation (hog fuel)! Don’t haul it to the landfill.

April 1, 2017

Bonded Fiber Matrix BFM Uniform Coverage

Filed under: Video — Tags: , , , , , , , , , — Sheetflow @ 7:00 am

How to inspect bonded fiber matrix (BFM) application.

October 3, 2016

Construction General NPDES Permit Appealed

Filed under: Article — Tags: , , , , — Sheetflow @ 1:29 pm

On December 29th, 2010, the Puget Soundkeeper Alliance filed a Notice of Appeal with the Washington State Pollution Control Hearings Board. The appeal calls for a re-write and reissue as they consider the permit to be ” unlawful and unfair” because it does not meet the “requirements or intent” of the Clean Water Act, Environmental Protection Agency rules, Washington state water quality law ( RCW 98.40 and WAC 173-201A), or Department of Ecology rules.

The document can be read here:
Puget Soundkeeper Alliance Notice of Appeal

June 25, 2015

Low Impact Development for Public Works Construction

Filed under: Article — Tags: , , , , , , , , , — Sheetflow @ 3:27 am

Low Impact Development for Public Works Construction:
Erosion and Sediment Control Compliance

David S. Jenkins, Seattle, Washington

Introduction
Construction is a messy business; in the Puget Sound region of western Washington, with average annual rainfall of 40″ to 60″, it can also be challenging. Uncontrolled erosion from a construction site can generate 10-1000 times the quantity of sediment that occurs naturally from vegetated areas. Most construction in western Washington occurs near wetlands, streams, lakes, or the Puget Sound where sediment loss can reduce beneficial uses, or worse, destroy a salmon stream.

This paper will discuss proven methods that public works professionals can utilise to improve erosion control compliance and reduce project impacts.
(more…)

May 25, 2015

Tire Bath

Filed under: Video — Tags: , , , , , , , , — Sheetflow @ 2:50 am

One of the most difficult things to manage on a construction project, especially a road project, is preventing mud from being tracked off the job. This video illustrates the use of a water-filled tire bath along with a rock entrance road and rock and asphalt exit onto existing road surface. Tire baths are useful when the there is a minimal amount of traffic leaving the project. Tire baths require a lot of maintenance including water changes and sediment removal.

February 1, 2014

Polymer Use and Testing for Erosion and Sediment Control on Construction Sites

Filed under: Article — Tags: , , , , , , — Sheetflow @ 12:15 pm

January-February 2001
Erosion Control Magazine

Polymer Use and Testing for Erosion and Sediment Control on Construction Sites
By Scott Tobiason, David Jenkins, Ed Molash, Stacey Rush

Tested in the soggy La Niña weather conditions of the Pacific Northwest, chemical polymers promise a cost-effective, safe way to prevent soil erosion and remove suspended sediments from construction-site runoff.

References
Azzam, R.A.I. “Agricultural Polymers, Polyacrylamide Preparation, Application and Prospects in Soil Conditioning.” Commercial Soil Science Plant Analysis. 11:235-243. 1980.

Betz Laboratories. Material Safety Data Sheet for Betz Polymer 1190. PFW 2819101. Betz Industrial Laboratories, Macon, GA. 1995.

Bremerton Sun. “Giant Retailer Pledges to be OGood Neighbor.'” West Sound, Section B. February 3, 1996, p. 1.

Calgon Corporation. Material Safety Data Sheet for Cat-Floc 2953 Liquid Cationic Polymer. Bulletin No. 12-485. Calgon Corporation, Pittsburgh, PA. 1997.

King County. Surface Water Design Manual. King County (WA) Department of Public Works. Revised November 1994.

Minton, G. “Use of Polymer to Treat Construction Site Stormwater.” Proceedings of Conference XXX. International Erosion Control Association, Steamboat Springs, CO. February 22-26, 1999, pp. 175-188.

Roa, A. Screening of Polymers to Determine Their Potential Use on Construction Sites. Publication No. 101-96. University of Idaho, Moscow, ID. 1996, pp. 77-83.

Sojka, R.E. and R.D. Lentz. A PAM Primer: A Brief History of PAM and PAM-related Issues. Publication No. 101-96. University of Idaho, Moscow, ID. 1996, pp. 11-20.

University of Georgia. “Georgia Adopts New Turbidity Standard.” Waterwise. University of Georgia, College of Environmental Sciences, Athens, GA. January 1998.

Washington Department of Ecology. Stormwater Management Manual for the Puget Sound Basin. Publication No. 91-75. 1992.

February 25, 2011

Construction Stormwater General Permit

Construction Stormwater General Permit

Construction site operators are required to be covered by a Construction Stormwater General Permit if they are engaged in clearing, grading, and excavating activities that disturb one or more acres and discharge stormwater to surface waters of the state. Smaller sites may also require coverage if they are part of a larger common plan of development that will ultimately disturb one acre or more. Operators of regulated construction sites are required to:

  • Develop stormwater pollution prevention plans.
  • Implement sediment, erosion, and pollution prevention control measures.
  • Obtain coverage under this permit.

NEW! - 01/29/09 Ecology issues the Construction Stormwater General Permit December 1, 2010

WebDMRs and PARIS

Contact Us – Contact your Permit Administrator for permit assistance or your Regional Office for site specific questions.

Permit, Forms and Application – Permit, application, forms, and appeal information.

High Turbidity Reporting – Construction projects must report high stormwater turbidity results within 24 hours.  If you get a high result, call your Ecology regional office.

Resources and Guidance – DMRs, Stormwater monitoring,  manuals, 303(d) list information.

CESCL Training and Certification Programs

Historical Information – Pollution Control Hearing Board information, public comments.

Construction Stormwater General Permit.

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