SPRING 2005 LAND APPLICATION OF BIOSOLIDS PROJECT

PROJECT REPORT

This report provides information on the Spring 2005 land application of biosolids (solids from the wastewater treatment process).

General Information

Biosolids are dewatered and stored for approximately 4-5 months in on-site storage bunkers. removed three times annually

Picture 1: The picture at left is the material as it is removed from the biosolids storage area. The material is loaded into semi-trucks for transport.

Table 1.  Schedule of the Project

Mobilization of Equipment	2/27/05
Began transporting and applying biosolids	2/28/05
Number of days worked	11 days
Number of rain days	2 days
Completion of project	3/10/05

Charts 1 through 3 on this page illustrate the metals concentrations as compared to the EPA’s ceiling limits (over these limits land application is not allowed by the EPA) and Table 3 limits (a higher quality limit set by the EPA). As shown, the City’s metals concentrations in biosolids are considerably less than even the Table 3 limits. They’ve been separated into three charts due to variance in scales. All EPA and Kansas regulations and requirements were met during the Spring application.

Note: Molybdenum (at left) does not have any Table 3 limits.

The following bullets depict the specifics of the project:

·     Number of farmers participating this spring            4 farmers

·     Number of fields applied:                                   12 fields

·     Average acreage per field:                                 27.5 acres

·     Total acres applied to:                                      330.0 acres

·     Cubic yards removed                                        3041.5 cu. yd.

·     Cost/ cu. yd. (2004)                                        $10.12

·     Cu. yards billed at 2004 cost                              1445.86 cu. yd.

·     Cost/cu. yd. (2005)                                         $10.62

·     Cu. yards billed at 2005 cost                              1595.64 cu.yd.

·     Total expense for Spring application project           $32,239.90

(5% retained for completion of annual report)

Nutriject Systems is the current contractor for the land application of biosolids for 2005. They provide the removal, transport, application, testing of soil and biosolids, annual reporting and recordkeeping, and incorporation (where required) for each land application event. We anticipate removal and application in July on harvested wheat ground, hay or pasture; and a final application in November following harvest.

The pictures at left show some of the application process including loading into the spreader (top), unloading of a transport truck (middle), and the field as applied and before incorporation (bottom).