Section 391.430 Site Monitoring

Section 391

Section 391.430  Site

Monitoring

a)         For sludge application projects less than 5 years, and with

sludge generated by treatment plants receiving minimal industrial waste load,

the agronomic rate usually results in the application of heavy metals to the

soil in low amounts that should not create problems from a water pollution,

phytotoxic and food-chain standpoint.  In general, soil testing will not be

required for these types of projects.

b)         For long term projects, soil testing shall be provided by the

permittee.  The number of soil tests and frequency of monitoring will be

dependent upon the quality of the sludge, sludge application rate and

continuity of soil types of the sludge application site.  If more than 100 dry

tons per acre of sludge are applied over the life of the site, the permittee

shall perform a complete soils analysis for that particular site.  The soils

shall be tested for parameters including, but not limited to, CEC, heavy metals

(total and/or plant available), pH, plant available phosphorus, organic carbon

content, soluble salts by electrical conductivity.  The collection of soil

samples shall be performed in accordance with Section 391.510.

c)         Except as provided in Section 391.430(a), analysis of the soil

prior to any sludge application will also be required for determining

background levels.  Hydrogeologic data shall be required for specific sites

including sites with unidentified hydrogeologic conditions.

d)         The information required in Sections 391.430(b) and (c) shall

be required for projects with a sludge application rate greater than the

nitrogen agronomic rate.