CONNstruction - Summer 2008 - (Page 11)

newsandviews c. Brick, block, ceramics, and concrete discarded through construction or demolition activities that have been affected by a release of a substance; d. Asphalt (bituminous concrete) that has been discarded; or e. Any combination of the above Why is DEP introducing a new term? Historically, materials such as brick, concrete, ceramic, and asphalt paving fragments have been managed as “clean fill” in accordance with the prevailing solid waste management regulations and were not necessarily characterized prior to reuse as fill material. The current definition of “clean fill” is not clear, according to DEP, on characterization prior to reuse, and most of these materials were not characterized, resulting in contamination problems. The proposed definition of clean fill and regulated fill coupled with the beneficial use general permit will hopefully, DEP predicts, clarify and resolve the characterization and reuse issues. Is the Glass Regulated Fill or Flowable Fill? The answer is, the CT Department of Environmental Protection (DEP) has regulatory initiatives to oversee how regulated fill and flowable are to be used, if used at all. Both proposals could significantly change the economics and operation of our industry. CCIA speaks up CCIA met with DEP and pointed out many concerns with this proposal, from the differences on how soil and sediment and asphalt, brick, and concrete are reused, to the cost of testing for contamination, and proposed permit fees ($500 to $5,000) that are disincentives to reusing regulated fill. By Faith Gavin Kuhn CCIA Director of Public Information Utility Contractors Association of Connecticut Executive Director Equipment Dealers Executive Director Regulated fill DEP is proposing a General Permit for the Beneficial Use of Regulated Fill when the fill is used off-site with soil, sediment, concrete, and no more than 5 percent asphalt; or used as sub-base under asphalt or in asphalt production; or as daily/weekly landfill cover; or in manufactured soil applications. What is regulated fill, and how does it differ from clean fill? Neither definition is set in stone, so to speak, because this proposal is being rewritten by DEP, following comments by CCIA and others. As originally proposed, regulated fill would be: a. Excavated contaminated environmental media, including polluted soil, contaminated sediment, stone, or rock, affected by a release of a substance; “release” and “substance” are as defined in CT’s Remediation Standard Regulations; b. Excavated historic fill, which means materials previously used to bring an area to grade that is a conglomeration of soil, polluted fill, and residuals. “Polluted fill” is as defined in RCSA 22a-133k-1. “Residuals” include, but are not limited to: ashes from the residential burning of wood and coal, coal ash, slag, dredged material, fragments of brick, ceramics, and concrete; Flowable fill Another general permit is proposed by DEP for the beneficial reuse of coal combustion products (CCPs), including coal fly ash and coal bottom ash/slag, in concrete, concrete products, lightweight block or aggregate, asphalt pavement, hot mix asphalt, and asphalt roofing shingles. The proposed general permit would allow the reuse of coal combustion products as structural fill, subbase or fill material when reused in compliance with the permit, but would prohibit flowable fill made with CCPs. CCIA speaks up again CCIA questioned why CCPs would be prohibited in flowable fill. Fly ash is well suited for use in flowable fill; its fine particle sizing and spherical particle shape enhances mix flowability. It is used by many state DOTs as trench backfill for storm drainage and utility lines road projects, backfill abutments and retaining walls, fill abandoned pipelines and utility vaults, and convert abandoned bridges into culverts. Flowable fill made with fly ash and ash/slag continued on page 44 CONNstruction / Summer 2008 / 11

Table of Contents for the Digital Edition of CONNstruction - Summer 2008

CONNstruction - Summer 2008
Contents
Going Forward
AGC/CT: Why Belong? Reasons Vary
Is the Glass Regulated Fill or Flowable Fill?
A Winning Strategy
Member Participation Vital to Success of Legislative Efforts
Just Cause...
Winner: Large New Construction Project
Winner: Large Renovation Project
Winner: Small Renovation Project
Winner: First-Time Applicant Award
Second Place Winners
Workshop Provides Education on Pervious Concrete as a Stormwater Solution
Guidelines for Stormwater Pollution Prevention Plans Available
2008 Build CT Awards
UCAC at the NUCA Conference
Keep CT Moving Transportation Summit
UCAC’s Spring General Membership Meeting
WorkZone Safety Press Conference
Index to Advertisers
Advertiser.com

CONNstruction - Summer 2008

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