WORK SESSION AGENDA REQUEST

Sponsor:

Board of Supervisors Meeting Date: 

Raymond E. Graham, Vice Chairman, Cedar Run District Supervisor

April 12, 2007

 

Staff Lead:

Department: 

Michael Dorsey, Director

Environmental Services

Topic: 

Update on Environmental Services Projects

 

Topic Description:

C&D Recycling Project 

For the past year, grading and construction activities have been underway at the construction and demolition (C&D) recycling facility.  In the next few weeks, the concrete pavement will be complete.  The recycling equipment is scheduled to be installed before the end of April 2007.  The final aspect of the project involves installing the electrical system which is scheduled to take place in May 2007. 

Volume information calculated from the December 2006 aerial survey indicates that the old landfill will be at capacity within the next few months.  Based on C&D tonnage rates during the last several years, the landfill was anticipated to have been filled before now but the slowdown in residential construction has resulted in a 35% to 40% reduction in C&D waste deliveries during the past 12 months and preserved landfill space until now.        

Staff continues to work toward the expansion of recycling markets.  Until the arriving C&D materials are sorted and weighed, it is impossible to accurately determine the percentages of the different waste streams.  However, based on observation of arriving trucks, significant quantities of wood, dirt, cardboard, metal, drywall, asphalt shingles, carpeting, and related materials should be expected.  Staff is planning to sort, separate and reuse/recycle whenever possible to remove these items from the landfill.   

Revenue from C&D waste this fiscal year is projected at approximately $3 million dollars from 65,000 tons.  The County has both regulatory approval and equipment capability to process up to 150,000 tons.   Since the delivered C&D waste stream has declined since the tipping fee has been higher than $38 per ton, it is proposed that a modest $1 per ton reduction in this fee be established on July 1, 2007 to determine if this results in increased tonnage.  The new mixed C&D waste fee would be $45 per ton equal to the Municipal Solid Waste (MSW) disposal fee.      

Procurement of Retail Contractor 

A Request for Proposals (RFP) has been advertised requesting firms to process and sell generated wood waste and other recovered materials from the waste stream.  This contractor would be located on 10 acres of land that should remain available for the next 30+ years.  It is hoped that an innovative contractor will be able to package and sell materials so that tipping fees can be maintained or possibly lowered.  

Leachate Management 

In the current fiscal year, the Corral Farm landfill has already generated, hauled and treated more than four (4) million gallons of leachate at a cost exceeding $300,000.  Much of this quantity was generated due to the opening of landfill Cell 2.   Last year before Cell 2 was operational, leachate generation was approximately 2.5 million gallons at a cost of $150,000.   

Another concern associated with the current leachate management system is that a significant portion of generated leachate is not treated onsite, and the only facility available that will accept the liquid is in Richmond.   This makes the operation vulnerable to service interruption as well as prohibitive expense.  

To resolve the above management issues, a leachate engineering firm was contracted to complete a master plan to find an alternative management option.  The master plan work was recently completed recommending construction of a “package plant” that will treat the leachate onsite to a point that it can be reused.  In addition, storage capacity of both untreated and treated leachate will be significantly expanded.  The goal is to permanently eliminate pumping and hauling.  The next steps in this effort are to resolve any regulatory issues, acquire a permit and procure a firm to construct and operate the system.  The preliminary engineering estimate for the capital work was less than $1,000,000 and operating expense $25,000 per year allowing for a three-year payback to the County. 

Mining Feasibility Study 

The old landfill is required to be closed in 2008.  Engineering estimates for closure exceed $2,000,000.  A study is underway to determine the feasibility of minimizing closure activities, recovering the soil and other recyclable C&D wastes to the extent possible, and then to develop a modern landfill in its place.  This project has the potential of creating two (2) million cubic yards of landfill space approximately equal to the currently permitted waste area.

 

Requested Action of the Board of Supervisors: 

Conduct a work session to review progress to date and provide feedback on the development plan.

 

Financial Impacts Analysis:

None at this time.  After completion of the mining/piggybacking feasibility study, the 10-year financial plan needs to be updated.

 

Identify any other Departments, Organizations or Individuals that would be affected by this request:

Department of Environmental Services

 

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