MDS Implementation Guidelines
MDS II Calculation Form
 Table
of Contents  Preface
 Background  Definitions
 Implementation Guidelines

 MDS I Calculation
Form  MDS II Calculation
Form  Factor Tables
 Appendix & Additional
Information 
The following outlines the 10 Steps on how to calculate setbacks
to all development reasonably expected to be impacted by a proposed
first or expanded livestock facility. Applicable topics are found
in the Implementation Guidelines Chart on pages 9 to 25 and applicable
Tables are noted.
Step 1: Location and Contact Information
Fill in the pertinent information about the applicant who is proposed
a first, or expanded, livestock facility. Implementation Guidelines
1 through 16 provide direction on the general rules and application
of the Minimum Distance Separation Formulae.
Step 2: Livestock facility animal/material types
Fill in all existing, and proposed to be added, animal/material
types, descriptions, the total maximum housing capacity, the number
of animals/material per Nutrient Unit (NU) and associated manure
forms. Table 1 and Implementation Guidelines 17 through 20 provide
guidance on determining livestock facility capacity. Implementation
Guidelines 21 and 22 provide direction on dealing with anaerobic
digesters.
Step 3: Existing and proposed to be added Nutrient Units (NU)
Calculate the existing and, proposed to be added, NU capacity of
the livestock facility by dividing existing, and proposed to be
added, capacity of each animal/material type by the number of animals/material
per NU as found in Table 1. Then, add all the existing, and proposed
to be added, NU together for all the types of animal/material present,
to obtain the total number of NU.
Step 4: Weighted Factor A
Determine Factor A (Odour Potential Factor) from Table 1, for only
each animal/material type proposed to be added and fill in the calculation
form. If necessary, calculate the weighted average for Factor A,
if Factor A is not the same for all animals/materials added. See
Implementation Guidelines 26 and 31 for further direction.
Step 5: Weighted Factor D
Determine Factor D (Manure Form in Permanent Storage Factor) from
Table 1, for only each animal/material type added, and fill in the
calculation form. If necessary, calculate the weighted average for
Factor D, if Factor D is not the same for all animals/materials
added. See Implementation Guidelines 29 and 32 for further direction.
Step 6: Factor B
Determine Factor B from Table 2, based on the Total NU to be housed
at the livestock facility, and fill in the space on the calculation
form. In some cases, it will e necessary to interpolate Factor B
from Table 2, when the number of NU is not specifically identified
in the table. Implementation Guideline 27 provides more specific
direction on Factor B.
Step 7: Determining Percentage Increase for livestock facility
Determine if a building permit was issued on this lot in the past
3 years that increased the livestock capacity of the livestock facility.
If 'No', use Approach (i) below to calculate
Percentage Increase.
If 'Yes' use Approach (ii) below to calculate
Percentage Increase.
Approach (i)
Enter total Added NU as calculated in Step 3 above. Enter total
Existing NU as calculated in Step 3 above. If total Existing NU
is zero (i.e. this is the First Livestock Facility on the lot),
then the Percentage Increase is considered to be at its maximum,
or 700% as per Table 3. If total Existing NU is not zero, divide
Added NU by Existing NU and multiply by 100. This value is the Percentage
Increase. In rare cases of downsizing, the Added NU would actually
be 'negative'. In this case, the Percentage Increase is 'negative',
but considered to be at its minimum, or 0% as per Table 3.
Approach (ii)
Enter total Added NU as calculated in Step 3 above, as well as
the total number of NU added in the past 3 years by previous building
permit(s). Enter total existing NU of the livestock facility as
it was 3 years ago, prior to the current application date. If total
Existing NU 3 years ago and was zero, then the livestock facility
in this current application and the one(s) constructed in the past
3 years are all considered to be the First Livestock Facility on
the lot, and the Percentage Increase is considered to be at maximum,
or 700% as per Table 3. If total Existing NU 3 years ago was not
zero, divide Added NU in this application plus Added NU over the
past 3 years, by Existing NU 3 years ago and multiply by 100. This
value is the Percentage Increase. In rare case of downsizing, the
Added NU would actually be 'negative'. In this case, the Percentage
Increase is 'negative', but considered to be at its minimum, or
0% as per Table 3.
Implementation Guideline 28 provides further direction and assistance
on calculating Percentage Increase, and establishing Factor C.
Step 8: Factor C
Determine and fill in Factor C (Orderly Expansion Factor) on the
calculation form, based on the Percentage Increase calculated in
Step 7. Factor C can be determined from Table 3. In some instances,
it may be necessary to interpolate Factor C. Implementation Guideline
28 provides direction on calculating the Percentage Increase in
NU for the proposed construction.
Step 9: F, Building Base Distance
Calculate F (Building Base Distance) = (Factor A) x (Factor D)
x (Factor B) x (Factor C), which is the required mDS II setback
from all proposed first or expanded livestock facilities to the
nearest development. For further information, see Implementation
Guidelines 23 and 34.
Step 10: S, Manure Storage Base Distance
Establish S (Manure Storage Base Distance) by first using table
5 to choose the proposed new storage at the livestock facility with
the highest odour potential: Very Low, Low, Medium, and High. Then,
enter Table 6 under the appropriate column and read across using
'F' calculated from Step 9. It may be necessary to interpolate from
the table. 'S' is the required MDS II setback from all proposed
new storages to the nearest development. Implementation Guidelines
24 and 25 provide further information. Implementation Guidelines
21 and 22 provide further information on dealing with anaerobic
digesters.
Now What? Using calculated MDS
The calculated values of MDS II can now be applied to the building
permit application. Implementation Guidelines 35 through 39 provide
direction around Type A and Type B land uses. For Type A land uses,
the values of Building Base Distance 'F' and Storage Base Distance
'S' should be multiplied by 1.0 to determine the required MDS setback.
For Type B land uses, the values of Building Base Distance 'F' and
Storage Base Distance 'S' should be multiplied by 2.0 to determine
the required MDS setback. Implementation Guideline 40 provides direction
around setbacks from rear lot lines, side lot lines and road allowances.
For rear and side lot lines, the values of Building Base Distance
'F' and Storage Base Distance 'S' should be multiplied by 0.1 to
determine the required MDS setback. In accordance with Implementation
Guideline 44, the required MDS setback from a rear or side lot line
should never exceed 30 metres. For road allowances, the values of
Building Base Distance 'F' and Storage Base Distance 'S' should
be multiplied by 0.2 to determine the required MDS setback. Implementation
Guidelines 41 through 44 provide direction around issues of measurement
of MDS II setbacks. Implementation Guidelines 45 and 46 provide
direction on issues regarding minor variances.
Example
Mr. Jones proposes to build a second 1200 head swine feeder barn
with concrete liquid manure storage to go along with his existing:
 1200 head swine feeder barn over a slatted floor where all swine
manure is stored;
 33000 bird chicken broiler barn (9week cycle) with solid manure
storage outside, uncovered, dry enough for a flowpath option;
 10 m x 12 m x 2 m permanent concrete storage with flowpath option,
for his imported solid dairy manure; and
 The existing facilities were constructed more than 3 years ago.
How far must the proposed barn be sited from all development reasonably
expected to be impacted?
Evaluator: ___________________________________________________________
Date: _______________________________________________________________
File Number: _________________________________________________________
Applicant Information:
First Name: Jim
Last Name: Jones
Farm/Company: SwineyAcres Farm
Address: 124 New Road
City/Town: Somewhere
Province: Ontario
Postal Code: N0G 0J0
Upper Tier: Upper Somewhere
Lower Tier: Lower Somewhere
Lot: 2
Concession: 2
Fire Number: 123456
Roll Number: 667
Telephone: 9055553333
Fax: 9055554444
Email: jjones@newroad.ca
MDS II Calculation Form
Animal Type or Material 
Description 
Number per NU 
Manure Form 
Existing Maximum Housing Capacity 
Existing NU 
Proposed Maximum Housing Capacity 
Added NU 
Total NU 
Factor A 
Factor AD 
Swine 
Feeders
(27 kg  105 kg) 
6 
Liquid 
1200 
200 
1200 
200 
400 
1.2 
0.8 
Chickens 
Broilers
(9 week cycle) 
300 
Solid 
33000 
110 
N/A 
N/A 
110 
N/A 
N/A 
Imported Manure 
Maximum Capacity (10m x 12m x 12m) 
19.8 
Solid 
240 
12 
N/A 
N/A 
12 
N/A 
N/A 
Total Existing NU = 322
Total Added NU = 200
Total NU = 522
Factor A (Odour Potential Factor)... weighted average may be necessary
= 1.2
Factor D (Manure Form Factor)... weighted average may be necessary
= 0.8
Factor B (Nutrient Units Factor) = 563
Has a building permit been issued for the livestock facility on
this property in the last 3 years that has increased its livestock
capacity? No? Yes? If no, proceed to Approach (i);
if yes, proceed to Approach (ii).
Approach (i)  No Building Permits in Last 3
Years
Calculation of Percentage Increase
Total 2  Total Added NU (from above) = 200
Total 1  Total Existing NU (from above) = 322
If Total 1 = Zero, Treat as a First Livestock Facility
% Increase = (Total 2/Total 1) x 100 = 62.1%
Approach (ii)  Building Permit(s) Issued in
Last 3 Years
Calculation of Percentage Increase
Total 2  Total Added NU (from above) + Total Added NU from building
permit(s) issued in the last 3 years
Total 1  Total Existing NU at Livestock Facility 3 years ago
If Total 1 = Zero, Treat as First Livestock Facility
% Increase = (Total 2/Total 1) x 100
Factor C = 0.825
F (Building Base Distance, m) = Factor A x Factor D x Factor B x
Factor C = 446
S (Manure Storage Base Distance, m) = 446
Now What?
Apply MDS calculation to building permit application as appropriate.
For Type A land uses, the values of Building Base Distance 'F' and
Storage Base Distance 'S' should be multiplied by 1.0 to determine
the required MDS setback. For Type B land uses, the values of Building
Base Distance 'F' and Storage Base Distance 'S' should be multiplied
by 2.0 to determine the required MDS setback. Implementation Guideline
40 provides direction around setbacks from rear lot lines, side
lot lines and road allowances. For rear and side lot lines, the
values of Building Base Distance 'F' and Storage Base Distance 'S'
should be multiplied by 0.1 to determine the required MDS setback.
In accordance with Implementation Guideline 44, the required MDS
setback from a rear or side lot line should never exceed 40 metres.
For road allowances, the values of Building Base Distance 'F' and
Storage Base Distance 'S' should be multiplied by 0.2 to determine
the required MDS setback.
 Table
of Contents  Preface
 Background  Definitions
 Implementation Guidelines

 MDS I Calculation
Form  MDS II Calculation
Form  Factor Tables
 Appendix & Additional
Information 