Sheet Flow Construction Erosion Control

October 23, 2021

Writing Contract Specifications

Topic: Writing specifications is always challenging. Writing specifications that incorporate environmental permit requirements is especially challenging. After this presentation, attendees will understand the difference between contract and permit language, how to determine what parts of a permit should be in a contract, and how to translate permit language into enforceable contract language.

Presenter: Dave Jenkins, CPESC Dave has worked in construction erosion control for over 27 years. He recently retired after 22 years as the Port of Seattle Erosion Control/Stormwater Engineer. Prior to the Port, he was the WSDOT Statewide Erosion Control Coordinator, responsible for developing and implementing their first contractor erosion control certification program. All of Dave’s experience is in heavy civil, public works construction, primarily seaport, airport and roadway infrastructure.

November 4, 2019

ESCA-BC 2019 Conference

I will be at the ESCA-BC 2019 Conference this week up in Coquitlam, British Columbia. I am giving two presentations and a contract specification workshop. This is a list of all of the Sessions.

I will be doing the following sessions:

Workshop

Writing Contract Specifications to Achieve Environmental Compliance Workshop

Presentations

Writing Contract Specifications to Achieve Environmental Compliance Presentation

Why Projects Fail to Meet Water Quality Requirements Presentation

July 2, 2019

Biofence Specification

I am trying to get to 100% biodegradable, recycled, reusable, recyclable, low impact best management practices.  I have used burlap fabric fence several times.  I use it whenever I can leave it in place to degrade, like on habitat or wetland work. 

Biofence Specification

Materials
BIOFENCE
A. Biofence shall consist of 7 ounce or heavier uncoated burlap fabric at least 36 inches wide and 100 feet long. Wood stakes dimensions shall be a minimum 1 1/8 x 11/8 inches by 42 inches high.

Construction Requirements
 BIOFENCE
a. Stakes shall be driven into the ground a minimum of 12 inches and be spaced no more than 6 feet apart.
b. Fence ends shall be joined by wrapping ends together around a post 3 times and driven into the ground.
c. Burlap fabric shall be attached to the post in at least 3 places using staples or other method approved by the Engineer.
d. When used as a barrier fence, fabric shall not be trenched into the ground. When used as a silt fence, a minimum 8 inch flap shall be left at the bottom and held in place with straw wattles staked in as detailed in item 9 above.

Payment
C. Payment for “TESC – Biofence” will be made at the contract unit price per linear foot as stated in the Schedule of Unit Prices and shall be full compensation for furnishing all labor, equipment, materials and tools necessary to complete the installation of the biofence as detailed on the drawings or as directed by the Engineer and specified herein. The unit price shall include all maintenance, the removal of biofence, and restoration of the area at the completion of the work

April 2, 2019

Migratory Bird Treaty Act Nest Removal

A little something different this week: we are going to do some demolition next to the waterfront this spring. Starting in April or May, seagulls begin nesting on buildings around the waterfront. When seagulls nest, you can’t demolish the buildings until you apply for and get permission for a “Take” of a bird covered under the Migratory Bird Treaty Act. This takes time, holds up the contractor, everyone gets frustrated. In order to head this off, I wrote some contract specifications, which hopefully, will keep this from happening

NESTING BIRD WATCH AND CONTROL

  1. Owner shall provide bird watch services up until 30 days after Contract Execution, to ensure there are no nesting birds that may impact the Contractor’s ability to perform work. At 30 days after Contract Execution, the Contractor shall take over full responsibility for this work.
  2. Contractor shall be responsible for preventing migratory birds from nesting on the roofs of buildings to be demolished. 
  3. Prevention shall include, at a minimum, once daily roof inspections to determine whether migratory birds are conducting nest building activity. 
  4. Nests that do not contain eggs and that are not in the possession of migratory birds shall be destroyed.
  5. Nests that contain one or more eggs shall not be disturbed and shall be immediately reported to the Engineer.
  6. Nests that are complete and in the possession of a migratory bird, with or without eggs, shall not be disturbed and shall be immediately reported to the Engineer.
  7. All Project delays and associated costs due to nesting birds discovered after the Contractor assumes responsibility for bird watch/control shall be the full responsibility of the Contractor.

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