Attachment_C_-_FDEP_COMPOST_RULE_62-709.550.pdf
PDF 163 KB Posted
- Solicitation number
- 262888RM
- Issued by
- Sarasota County, Siesta Key CDP, Florida
About this file
This file comprises regulatory documentation from the Florida Department of Environmental Protection (FDEP) establishing compost classification standards under Rule 62-709.550, applicable to Sarasota County's odor control mulch bed media refurbishment and replacement procurement. The FDEP rule establishes seven compost classifications (Types Y, YM, A, B, C, D, and E) based on waste processing type, product maturity level, foreign matter content, particle size, organic matter content, and heavy metal concentrations. Classification criteria include yard trash only; manure or vegetative waste with manure; or solid waste compositions, with maturity categories of mature, semi-mature, or fresh. Foreign matter content thresholds range from less than 2 percent to less than or equal to 10 percent dry weight depending on compost type. Particle size specifications include fine (≤10mm with ≥25% organic matter), medium (≤15mm with ≥30% organic matter), and coarse (≤25mm with ≥35% organic matter).
Heavy metal concentration codes establish maximum permissible levels for cadmium, copper, lead, nickel, and zinc, with Type A compost representing the most restrictive classification for mature, fine-particle solid waste compost with metal concentrations under code 1 and less than or equal to 2 percent foreign matter content. Type E compost accommodates solid waste with elevated metal concentrations under code 4. Maturity determination is based on organic matter reduction percentages: mature compost requires greater than 60 percent organic matter reduction with no reheating greater than 20°C above ambient temperature; semi-mature requires 40 to 60 percent reduction with reheating capability; and fresh compost requires 20 to 40 percent reduction. These regulatory standards establish the technical specifications that potential bidders for Sarasota County's five-year mulch bed media contract must meet in providing compliant compost products.
View the file
Other files
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
FDEP COMPOST RULE 62-709.550
62-709.550 Classification of Compost.
(1) Compost shall be classified based on the type of waste processed, product maturity, the amount of foreign matter in the product, the particle size and organic matter content of the product, and the concentration of heavy metals as specified in the following sections. The following characteristics shall be used:
(a) Type of waste processed.
1. Yard trash only.
2. Manure or yard trash or vegetative waste with manure.
3. Solid waste, other than only yard trash, vegetative waste or manure. This includes composts made from the addition of any animal byproducts.
(b) Product maturity.
1. Mature.
2. Semi-mature.
3. Fresh.
(c) Foreign matter content.
1. ≤ = 2% dry weight.
2. ≥ 2%, but ≤ = 4% dry weight.
3. ≥ 4%, but ≤ = 10% dry weight.
(d) Particle size, using the screen size that the compost passed through. Organic matter content shall be associated with particle size.
1. Fine: ≤ = 10mm, and an organic matter content of ≥ = 25%.
2. Medium: ≤ = 15mm, and an organic matter content of ≥ = 30%.
3. Coarse: ≤ = 25mm, and an organic matter content of ≥ = 35%.
(e) The codes in the following table for heavy metal concentrations shall be used in classifying the compost produced. The concentrations are expressed in mg/kg dry weight. In determining the appropriate classification code for parameter concentrations, if any one parameter falls in a higher concentration grouping, the code for that higher grouping will apply.
Concentration codes
Parameter 1 2 3 4 Cadmium ≤ 15 15- ≤ 30 30-100 ≥ 100 Copper ≤ 450 450- ≤ 900 900-3,000 ≥ 3,000 Lead ≤ 500 500- ≤ 1,000 1,000-1,500 ≥ 1,500 Nickel ≤ 50 50- ≤ 100 100-500 ≥ 500 Zinc ≤ 900 900- ≤ 1,800 1,800-10,000 ≥ 10,000
(2) Compost shall be classified as follows.
(a) Type Y is compost made only from yard trash, which is mature or semi-mature, and is fine, medium or coarse. For such compost, a foreign matter content of less than 2% and a metal concentration equivalent to code 1 is assumed.
(b) Type YM is compost made from only vegetative waste, animal byproducts or manure, with or without yard trash, which is mature or semi-mature and is fine, medium or coarse. For such compost, a foreign matter content of less than 2% and a metal concentration equivalent to code 1 is assumed.
(c) Type A is compost made from solid waste, other than only yard trash, vegetative waste, animal byproducts or manure, which is mature and is fine. The foreign matter content shall be less than or equal to 2%, and the metal concentration shall fall under code
1. Further, it shall contain no foreign matter, such as glass or metal shards, of a size and shape that can cause injury.
(d) Type B is compost made from solid waste, other than only yard trash, vegetative waste, animal byproducts or manure, which is mature or semi-mature and is fine or medium. The foreign matter content shall be less than or equal to 4%, and the metal concentration shall fall under codes 1 or 2. Further, it shall contain no foreign matter, such as glass or metal shards, of a size and shape that can cause injury.
(e) Type C is compost made from solid waste, other than only yard trash, vegetative waste, animal byproducts or manure, which is mature or semi-mature and is fine, medium or coarse. The foreign matter content shall be less than or equal to 10%, and the metal concentration shall fall under codes 1, 2 or 3.
(f) Type D is compost made from solid waste, or from only yard trash, vegetative waste, animal byproducts or manure, which is
FDEP COMPOST RULE 62-709.550
fresh and is fine, medium or coarse. It shall have a foreign matter content of less than or equal to 10%, and the metal concentration shall fall under codes 1, 2 or 3. Foreign matter content and metal concentration is assumed for fresh compost made from only yard trash, vegetative waste, animal byproducts or manure.
(g) Type E is compost made from solid waste, other than only yard trash, vegetative waste, animal byproducts or manure, which has a metal concentration that falls under code 4.
(3) Compost maturity shall be determined as follows:
(a) Mature compost is a highly stabilized compost material that has been exposed to prolonged periods of decomposition. It will not reheat upon standing to greater than 20ºC above ambient temperature. It has beneficial use and can be used in direct contact with roots. The material should be brown to black in color. This level of maturity is indicated by a reduction of organic matter of greater than 60%.
(b) Semi-mature compost is compost material that is at the mesophilic stage. It will reheat upon standing to greater than 20ºC above ambient temperature. It has beneficial use, although direct contact with roots should be avoided. The material should be a light to dark brown in color. This level of maturity is indicated by a reduction of organic matter of greater than 40% but less than or equal to 60%.
(c) Fresh compost is compost material that has been through the thermophilic stage and has undergone partial decomposition.
The material will reheat upon standing to greater than 20ºC above ambient temperature. It has beneficial use, but proper care is needed as further decomposition and stabilization will occur. The material should be similar in texture and color to the feed stock into the composting process. This level of maturity is indicated by a reduction of organic matter of greater than 20% but less than or equal to 40%.
Rulemaking Authority 403.061, 403.704, 403.7043 FS. Law Implemented 403.7043 FS. History–New 11-21-89, Formerly 17-709.550, Amended 2- 15-10.
62-709.550 Classification of Compost.
File details come from the government source that posted it. Updated .