CALIFORNIA AIR RESOURCES BOARD 

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I. GENERAL INFORMATION District: Ventura County APCD Rule No(s): Rules 2, 5, 10, 30, 42, 45.1, 50, 51,52, 53, 55, 60, 62.3, 62.4, 62.5, 68, 100, and 102. Date adopted/Amended/Rescinded: 4/13/2004 Rule Title(s): The following Rules were amended: RULE 2, DEFINITIONS RULE 5, EFFECTIVE DATE RULE 10, PERMITS REQUIRED RULE 30, PERMIT RENEWAL RULE 42, PERMIT FEES RULE 50, OPACITY RULE 51, NUISANCE RULE 52, PARTICULATE MATTER – CONCENTRATION RULE 53, PARTICULATE MATTER - PROCESS WEIGHT RULE 68, CARBON MONOXIDE RULE 102, SOURCE TESTS The following rules were rescinded: RULE 45.1, ECO PLAN FEES RULE 55, EXEMPTIONS FROM EMISSION STANDARDS RULE 60, NEW NON-MOBILE EQUIPMENT - SULFUR DI OXIDE, NITROGEN OXIDES, AND PARTICULATE MATTER RULE 62.3, HEXAVALENT CHROMIUM – COOLING TOWERS RULE 62.4, ASBESTOS – SERPENTINE ROCK FOR SURFACING RULE 62.5, DIOXINS – MEDI CAL WASTE INCINERATORS RULE 100, ANALYTICAL METHODS

Date Submitted to ARB: 5/12/04 If an Amended Rule, Date Last Amended (or Adopted): RULE 2, DEFINITIONS - 11/10/98 RULE 5, EFFECTIVE DATE - 5/23/72 RULE 10, PERMITS REQUIRED - 5/14/02 RULE 30, PERMIT RENEWAL - 5/30/89 RULE 42, PERMIT FEES - 4/9/02 RULE 50, OPACITY - 2/20/79 RULE 51, NUISANCE - 10/22/68 RULE 52, PARTICULATE MATTER – CONCENTRATION - 5/23/72 RULE 53, PARTICULATE MATTER - PROCESS WEIGHT - 7/18/72 RULE 68, CARBON MONOXIDE - 6/14/77 RULE 102, SOURCE TESTS - 11/21/78

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: Chris Frank Phone Number: 805 645-1409 E-mail Address: chrisf@vcapcd.org Narrative Summary of New Rule or Rule Changes: New Rule Amended Rule With the exception of the permit fee increase in Rule 42, all of the rule amendments are administrative in nature and were done to make corrections, repeal opbsolet e requirements, and bring the rules up-to-date.CALIFORNIA AIR RESOURCES BOARD 

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Rule 2, Definitions: Rule 2 defines terms that are used in multiple rules. The following definitions were removed from Rule 2 because they are no longer used in any of the District's rules: "Air Pollution Abatement Operation" and "Photochemically Reactive Solvent." The term "Acceptable Incinerator" is used only in Rule 23. However, the provisions of Rule 57, Combustion Contaminants – Specific, better define what an acceptable incinerator would be. An incinerator meeting the definition in Rule 2 might not be able to meet Rule 57. Therefore, the term "Acc eptable Incinerator" was deleted from Rule 2. The term "Existing Equipment" was deleted from Ru le 2 and redefined in Rule 5 where it is used. The term "Loading Facility" was deleted from Rule 2. The te rm is used in Rule 71.3. Definitions for Rule 71.3 are contained in Rule 71, which already cont ains a definition of "Loading Facility." The terms "Major Source" and "Modified Emissions Unit" were deleted from Rule 2. The terms are adequately defined in all of the rules in which they are used. The term "Noxious Mist" was used in Rule 50. Rule 50 was amended in a manner that no longer uses the term, so it was deleted from Rule 2. The term "Non-Mobile Equipment" was used in Rule 60. Rule 60 was repealed and the term "Non-Mobile Equipment" was deleted from Rule 2. . The terms "Process Weight" and "Solid Particulate Matter"are used only in Rule 53. Rule 53 was revised to include definitions of these terms. T herefore, these terms were deleted from Rule 2. The term "Batch Operation" was used in the old definition of "Process Weight." Be cause the new definition of "Process Weight" does not use the term "Batch Operation", it was deleted from Rule 2. The term "Particulate Matter" is used in multiple rules. The definition of "Particulate Matter" in Rule 2 was revised to be consistent with the definitions used in Rules 52 and 53. The revised definition of "Particulate Matter" no longer includes the word "Dust." Therefore the definition of "Dust" was deleted from Rule 2. A temperature of 70 degrees Fahrenheit is specified in the term "St andard Conditions." The standard was amended to 68 degrees Fahrenheit for consistency with U.S. Environmental Protection Agency (EPA) and California Air Resources Board (ARB) regulations. Rule 5, Effective Date: A definition for the term "Existing Equipment" was added. Rule 10, Permits Required: Part 70 (Title V) permit renewal requirements were clarified. Rule 30, Permit Renewal: Part 70 (Title V) permit renewal requirements were clarified. Rule 42. Permit Fees: Section H was revised to increase permit fees and define acronyms. Outdated language was deleted from section B.2.a. Se ction K, California Clean Air Act Fee, was deleted. The California Air Resources Board (ARB) is in the final stages of amendi ng the California Clean Air Act Nonvehicular Source Fee regulation. One of ARB's amendments w ill allow the state to collect this fee directly, rather than relying on the District. Rule 45.1, ECO Plan Fees was repealed. It was obsolete Rule 50, Opacity was revised to spec ify EPA Method 9, Visual Determination of the Opacity of Emissions From Stationary Sources, for determining compliance. By specifying Method 9, Notes 1-3 in Section A could be deleted. Additionally, state law prohibi ts air districts from applying the rule to certain sources, including pile drivers, open fires, dust from agricul tural operations, abrasive blasting operat ions, and others. Some of these exemptions are currently listed in Rule 55. Staff added ex emptions to Rule 50 to reference these state limitationsCALIFORNIA AIR RESOURCES BOARD 

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on local authority. Revised subsection C.3 does notexempt combustion equipment used in agricultural operations because the term "dust" does not apply to combustion contaminants. Rule 51, Nuisance: Agricultural odors must be exempted from Rule 51 pursuant to state law. This exemption was in Rule 55. Staff is moved the exemption for agriculture odors to Rule 51. Rule 52, Particulate Matter – Concentration: Rule 52 se ts limits on the concentration of particulate matter that may be emitted from any source. The only exemptions listed in the rule were for gas turbines and steam generators that burn liquid or gaseous fuels. The rule was revised to specify that "boilers, steam generators, water heaters, process heaters, space heaters, gas tu rbines, internal combustion engines, and flares that combust liquid or gaseous fuels or waste gases and emit only combustion products" are all exempt from Rule 52. Regulation of particulate matter from these devices is not necessary because EPA emission factors (AP-42) for boilers, process heaters, natural gas internal combus tion engines, and diesel engines fueled with either natural gas or fuel oil are lower than the emission limits imposed by Rule 52. The rule was also revised to exempt abrasive blasting and open fires already regulated by Rules 74.1 and 56, respectively. These exemptions reflect the District's historical applicati on of Rule 52. Appropriate test methods and definitions were also added. Rule 53, Particulate Matter - Process Weight: Rule 53 sets emission limits on the amount of solid particulate matter that may be released from any source based on throughput (i.e., process weight). The definition of "Process Weight" implies that com bustion contaminants from gaseous fuels were not intended to be covered by Rule 53. Test methods, exemptions, and definitions are added in a similar manner as Rule 52. Additionally, a typographical error in column 2 of the table on page one is corrected. Rule 55, Exemptions from Emission Standards was repealed. The exemptions specified in Rule 55 from Rules 50 and 51 were moved to those rules. The exemption in Section C.3 for "Short duration, infrequently operated sources engaged in experimental or research operati ons not exceeding an aggregate of two hours per month" has never been claimed and was deleted. Rule 60, New Non-Mobile Equipment - Sulfur Dioxi de, Nitrogen Oxides, and Particulate Matter is obsolete and was repealed. Rule 60 prohibited construction of anydevice that would emit more than 200 pounds per hour (pph) of sulfur oxides, 140 pph of oxides of nitrogen, or10 pph of particulate matter from the burning of a fuel. These emission rates are equal to 800 tons per year (tpy ) sulfur oxides, 560 tpy oxides of nitrogen, and 40 tpy of particulate matter (assuming 8000 hours of operation per yea r). These would be very large sources. The rule has not been triggered in staff's memory. These emission rates exceed the current balances for these pollutants in the District emission reduction credit bank. Obtaining offsets of this magnitude would be very difficult, if not impossible. Rule 26, New Source Review, has effectivel y replaced Rule 60. Rule 26 requires all new sources to control air pollutants using Best Ava ilable Control Technology (BACT) and requi res all new emissions to be offset. Rule 62.3, Hexavalent Chromium – Cooling Towers; Ru le 62.4, Asbestos – Serpentine Rock for Surfacing; and Rule 62.5, Dioxins – Medical Waste Incinerators are proposed to be repealed. The Ventura County APCD Board adopted the rules in 1990 and 1991. Rule 62.3 implement s the California Airborne Toxic Control Measure (ATCM) for the control of hexavalent chromium from cooling towers. Rule 62.4 implements a previous version of the ATCM for the control of asbestos emissions from unpaved roads surfaced with serpentine rock. Rule 62.4 is no longer current because CARB modified the ATCM on July20, 2000. Rule 62.5 implements the ATCM for the control of dioxin emissions from medical waste incinerators. California Health and Safety Code (H&SC) Section 39666(d), as it existed in 1990 and 1991, required air district s to adopt rules to implement state ATCMs. Since that time, H&SC Section 39666(d) has been revised to allo w air districts to implem ent ATCMs directly, without adopting local implementation rules. Therefore, it is not necessary to mainta in current versions of these locally adopted rules in the Ventura County APCD rulebook. Rule 68, Carbon Monoxide: Rule 68 limits CO emissions from any source to 2,000 parts per million (ppm). The current rule exempts "emissions from internal co mbustion engines, jet engine or rocket engine test stands, or rocket propellant or rocket fuel testing devices." The rule was amended to specify that boilers, steam generators, water heaters, process heaters, space heaters, internal combustion engines, gas turbines, jet engine test stands, rocket engine test stands, flares, and open outdoor fires are exempt from Rule 68. Boilers, steam generators,CALIFORNIA AIR RESOURCES BOARD 

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water heaters, and process heaters larger than 400,000 Btu/hr are subject to more stringent CO limits pursuant to Rules 74.11.1, 74.15, 74.15.1 and 59. Because Rule 68 was not intended to apply to smaller units such as residential water heaters and space heaters, they were also exempted. EPA emission factors show that CO emissions from gas turbines and flares are less than 2000 ppm. Non-exempt sources subject to Rule 68 include drum-mix driers and aggregate driers at asphalt batch plants, incinerators, kilns, and smelters. Appropriate test methods and definitions were also added. Rule 100, Analytical Methods is obsolete and was repealed. Appropriate test methods are now specified in each applicable rule that sets an emission limit. The repeal of Rule 100 included repeal and elimination of Appendixes A, B, C, D, and F, which are referenced in Rule 100. Rule 102, Source Tests: Minor corrections were adopted regarding the schedule for source testing and reporting. The rule was also revised to state that appropriate test methods are specified in the applicable rules that set the emission limits.

Pollutant(s) Regulated by the Rule (Check): ROG (NOx) SO2 (CO) PM TAC (name): II. EFFECT ON EMISSIONS
Complete this section ONLY for rules that, when implemented, w ill result in quantifiable changes in emissions. Attach referenc e(s) for emission factor(s) and other information. Attach calculation sheet showi ng 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: N/A Inventory Year Used to Calculate Changes in Emissions : NA Area Affected: Ventura County Future Year Control Profile Estimate (Provide information on as many years as possible) : NA.CALIFORNIA AIR RESOURCES BOARD 

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Baseline Inventory in the SIP for the Control Measure: NA. Emissions Reduction Commitment in the SIP for the Control Measure: NA Revised Baseline Inventory (if any): NA Revised Emission Reduction Estimate (if developed): NA Note that the district’s input to the Rule Evaluation Form will not be used as input to the ARB’s emission forecasting and planning. III. SOURCES/ATTAINMENT STATUS District is: Attainment Nonattainment Split Approximate Total Number of Small (<100 T PY) Sources Affected by this Amendment: NA Percent in Nonattainment Area: NA% Number of Large (> 100 TPY) Sources Controlled: NAPercent in Nonattainment Area: NA % Name(s) and Location(s) (city and county) of Large (> 100 TPY) Sources Controlled by Rule (Attach additional sheets as necessary) : IV. EMISSION REDUCTION TECHNOLOGY Does the Rule Include Emission Limits that are Continuous? Yes No If Yes, Those Limits are in Section(s) of the Rule. Other Methods in the Rule for Achieving Emission Reductions are: V. OTHER REQUIREMENTS The Rule Contains: Emission Limits in Section(s): Work Practice Standards in Section(s): Recordkeeping Requirements in Section(s): Reporting Requirements in Section(s):CALIFORNIA AIR RESOURCES BOARD 

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VI. IMPACT ON AIR QUALITY PLAN No Impact Impacts RFP Impacts attainment Discussion: