Section 323.2410. Management practices.

(1) A person shall not apply bulk biosolids to the land if it is likely to adversely affect a threatened or endangered species listed under section 36503 of the act or its designated critical habitat.

(2)    A person shall not apply bulk biosolids to agricultural land, a forest, a public contact site, or a reclamation site that is flooded, saturated with water, frozen, or snow- covered so that the bulk biosolids enter a wetland  or other waters of the state.

(3)  A person may subsurface inject bulk biosolids on frozen or snow-covered ground as long as there is  substantial  soil  coverage  of  the  applied biosolids. A person shall not surface apply  bulk  biosolids,   other  than exceptional quality biosolids,  on  frozen or snow-covered  ground, unless otherwise approved by the department.

(4)   A person shall not apply bulk biosolids on lands having a slope of more than 6% for surface application or more than 12% for subsurface injected biosolids, unless the person uses the bulk biosolids in accordance with a department-approved site management plan.

(5)    A person shall apply bulk biosolids to agricultural land, a forest, a public contact site, or a reclamation site at an application rate that is equal to, or less than, the agronomic rate, unless the person that applies bulk biosolids in accordance with a department-approved site management plan.

(6)   A generator or distributor shall affix a label to the bag or other container in which biosolids are sold or given away for application to the land or the generator or distributor shall provide an information sheet  to the person who receives biosolids sold or given away in another container for application to the land. The label or information sheet shall contain all  of the following information:

(a)   The name and address of the person who prepared the biosolids that are sold or given away in a bag or other container for application to the land.

(b)   A statement that the application of the biosolids to the land is prohibited unless applied according to  the instructions on the label or information sheet.

(c)   The annual whole biosolids application rate for biosolids that do not cause  any of the annual pollutant  loading   rates  in  table  4   of  R 323.2409(5)(d) to be exceeded.

(7)  A person that applies biosolids shall perform soil fertility tests on soils sampled from each application site before initial  biosolids application. The person shall resample and test on a regular basis so that the last soil fertility test is not more than 2 years old at the time of the next biosolids application.

(8)    For agricultural land, a person shall apply biosolids in accordance with agronomic rates. If the Bray P1 soil test level exceeds 300 pounds (P) per acre (150 ppm), or if the Mehlich 3 soil test level exceeds 340 pounds (P) per acre (170 ppm) in site soils, then  the  person  shall  not  apply biosolids until the soil P test level decreases to  less  than  1  of these values.

(9)  For silvicultural land, such as forestland and tree farms, a person shall base the agronomic rate for silvicultural land on the quantity of plant-available nitrogen (PAN) that growing trees will take up annually. A person may reapply biosolids at rates that will provide PAN additions up to a maximum of 5 years, using the annual PAN additions listed in table 5 to calculate total PAN additions for 1 year up  to  a   5-year  maximum for the particular tree species and age of the stand receiving biosolids. A person may reapply biosolids after the  time   interval  selected  for   the  previous application expires,

as long as the trees are still growing. If the  Bray  P1 soil test level exceeds 200 pounds

(P) per acre (100 ppm) or the Mehlich 3 soil test level exceeds 220 pounds (P) per acre (110ppm), then a person shall not apply biosolids until the soil P test level decreases to less than 1 of these values.

(10)     The  rates  for   wastewater  biosolids     application       in     Michigan     forests (Brockway, 1988) are as follows:

TABLE 5

PAN Applied from Biosolids1

Forest Type               Age of Tree Stand in Years        Annual Use    Total Used in 5 Years

Aspen		0 to 5		50		250
Aspen		6 to 20		100		500
Aspen		over 20		50		250
Northern Hardwoods		0 to 10		40		200
Northern Hardwoods		11 to 30		80		400
Northern Hardwoods		over 20		40		200
Oak-Hickory	0 to 10		50		250
Oak-Hickory	11 to 30		100		500
Oak-Hickory	over 30		50		250
Elm-Ash-Cottonwood		0 to 5		50		250
Elm-ash-Cottonwood		6 to 20		100		500
Elm-Ash-Cottonwood		over 20		50		250
Scrub oak		0 to 20		20		100
Scrub oak		over 20		40		200
Red, White, Jack Pine		0 to 10		50		250
Red, White, Jack Pine		11 to 30		40		200
Red, White, Jack Pine		over 30		20		100
Spruce-Fir		0 to 10		40		200
Spruce-Fir		11 to 30		30		150
Spruce-Fir		over 30		20		100
Northern White-cedar		0 to 20		40		200
Northern White-cedar		over 20		20		100

1 PAN = Plant-available nitrogen, or the amount of nitrogen that will  be available for trees to utilize (pounds per acre per year).

(11)   The following isolation distances shall be observed when  land  applying bulk biosolids:

TABLE 6

Isolation Distance Requirements

Isolation from existing:                                                               Distance (feet)

Surface application without incorporation

Injection or  Surface application with incorporation*

Municipal well

(type I or type IIA)**                                           2000

2000

800

Noncommunity public Water supply

(type IIB or type III)                                               800

Domestic well	100		150
Homes	100		150
Commercial  Buildings		100

150

150

Surface  waters***                                                                                                      50

* Incorporation must be within 48 hours, unless a shorter  time  period  is specified in these rules.

** As defined and specified in Act No. 399 of the Public Acts of 1976, as amended, being §325.1001 et seq. of the Michigan Compiled Laws, and known as the safe drinking water act. As specified in Act No. 399 of the Public Acts of 1976, as amended, the  term  includes  water supplies  such  as  schools,

restaurants, industries, campgrounds, parks, and hotels.

*** Surface waters do not include grassed drainage ways or drainage ways that are tilled and planted.

(12)     A person shall apply biosolids in a manner that would maintain, at a minimum, a 30-inch separation distance between  the   soil  surface  and  the groundwater at the time of biosolids application.

History: 1999 AACS.