CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM – Page 1 

(Electronic Format) 

I. GENERAL INFORMATION

District: South Coast Air Quality Management District

Rule No(s): 1127 Date adopted/Amended/Rescinded August 6, 2004

Rule Title(s): Emission Reductions from Livestock Waste 

Date Submitted to ARB: June 22, 2006

If an Amended Rule, Date Last Amended (or Adopted): N/A

Is the Rule Intended to be Sent to the U.S. EPA as a SIP Revision? Yes No (If No, do not complete remainder of form)

District Contact: Tracy Goss Phone Number: (909) 396-3106 E-mail Address: tgoss@aqmd.gov

Narrative Summary of New Rule or Rule Changes: New Rule Amended Rule 

Proposed Rule 1127 implements 2003 AQMP Control measure WST-01 and certain Senate Bill (SB) 700 

requirements for dairy operations. Its purpose is to reduce VOC, ammonia and PM10 emissions from 

dairy manure. Rule 1127 affects dairy and related operations such as heifer and calf ranches, as well as 

manure processing operations such as composters and digesters. It establishes on-farm best 

management practices, manure disposal requirements, and approval requirements for manure 

processors. 

Pollutant(s) Regulated by the Rule (Check): ROG (NOx) SO2 (Administrative and Protocol Only) 

 (CO) PM TAC (name):Ammonia

II. EFFECT ON EMISSIONS

Complete this section ONLY for rules that, when implemented, will result in quantifiable changes in emissions. Attach reference(s) for emission factor(s) 

and other information. Attach calculation sheet showing how the emission information provided below was determined. 

Net Effect on Emissions: Increase* Decrease** N/A 

Emission Reduction Commitment in SIP for this Source Category: 4.2 tons per day VOC & 8.7 tons per day Ammonia 

in 2006; 4.8 tons per day VOC & 8.7 tons per day Ammonia in 2010 (2003 AQMP Control Measure WST-01)

Inventory Year Used to Calculate Changes in Emissions: 2006 & 2010 Area Affected: SCAQMD

Future Year Control Profile Estimate (Provide information on as many years as possible): 

N/A 
 

CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM - Page 2 

(Electronic Format) 

Baseline Inventory in the SIP for the Control Measure: 12.1 tons per day VOC & 21.2 tons per day Ammonia in 1997; 

11.0 tons per day VOC & 19.3 tons per day Ammonia in 2006 & 2010

Emissions Reduction Commitment in the SIP for the Control Measure: 4.2 tons per day VOC & 8.7 tons per day 

Ammonia in 2006; 4.8 tons per day VOC & 8.7 tons per day Ammonia in 2010 (2003 AQMP Control Measure WST01)

Revised Baseline Inventory (if any): 6.35 tons per day VOC & 18.0 tons per day Ammonia in 2006; 5.8 tons per day 

VOC & 16.43 tons per day Ammonia in 2010 (see discussion below)

Revised Emission Reduction Estimate (if developed): 2.56 tons per day VOC & 7.26 tons per day Ammonia in 2006; 

2.47 tons per day VOC & 6.99 tons per day Ammonia in 2010 (see discussion below)

The baseline emissions were adjusted using the latest emission factors and emission methodologies. In 

addition, emission reductions account for reductions resulting from dairy relocations and water quality 

regulations enacted in 1999. Emission reductions due to Rule 1127 alone are 1.19 tons per day VOC & 3.37 tons 

per day Ammonia in 2006; 1.16 tons per day VOC & 3.27 tons per day Ammonia in 2010. 

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split 

Approximate Total Number of Small (<100 TPY) Sources Affected by this Amendment: N/A

Percent in Nonattainment Area: N/A%

Number of Large (> 100 TPY) Sources Controlled: N/A Percent in Nonattainment Area: N/A% 

Name(s) and Location(s) (city and county) of Large (> 100 TPY) Sources Controlled by Rule (Attach additional sheets as 

necessary): N/A

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Continuous? Yes No 

If Yes, Those Limits are in Section(s) 

Other Methods in the Rule for Achieving Emission Reductions are: Rule 1127 achieves reductions by implementation 

of best management practices (subdivision (d)) and manure disposal requirements (subdivision (d)).

V. OTHER REQUIREMENTS

The Rule Contains: 

Emission Limits in Section(s): N/A Work Practice Standards in Section(s): Subdivisions (d) and (e)

Recordkeeping Requirements in Section(s): Subdivision (g) Reporting Requirements in Section(s): Subdivision (g)
 

5/1/2002 

CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM - Page 3 

(Electronic Format) 

VI. IMPACT ON AIR QUALITY PLAN

 No Impact Impacts RFP Impacts attainment 

Discussion: The rule best management practices to reduce emissions of VOC and ammonia from this source 

category. Secondary emissions of PM10 (ammonia as precursor) will also be reduced.