Volatile Organic Compound Regulations Randy Segawa and Pam Wofford September 2014.

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Presentation transcript:

Volatile Organic Compound Regulations Randy Segawa and Pam Wofford September 2014

2 Overview Background Pesticide VOC emissions inventory Fumigant regulations Nonfumigant regulations

3 Background Volatile organic compounds (VOCs) and nitrogen oxides (NOx) react with sunlight to form ozone, causing –Inflammation and irritation of lungs –Increases in premature deaths of elderly people with lung and circulatory diseases –Compromised immune system As required by Clean Air Act, the state implementation plan (SIP) describes measures to reduce VOCs and NOx to achieve ozone standard Pesticides contribute to VOCs, but have negligible NOx emissions

4 State implementation plan SIP requires DPR to –Develop and maintain an emission inventory to track pesticide VOC emissions for five nonattainment areas, based on pesticide use reports –Reduce pesticide emissions by specified amounts during May-Oct peak ozone season –Implement low-emitting fumigation methods – completed in 2008 –Implement restrictions on nonfumigant (inert ingredients) products for San Joaquin Valley – completed in 2013

5

6 Estimating pesticide VOC emissions VOC emissions from a pesticide product are calculated from: –Amount of product applied (from pesticide use reports) –VOC fraction in product (emission potential, EP), determined by thermogravimetric analysis (TGA) or other methods Fumigants are adjusted by an additional factor to account for emissions under field conditions –Insufficient data to estimate nonfumigant VOC emissions under field conditions Most pesticide VOC emissions are from fumigants and inert ingredients in emulsifiable concentrates

7 Pesticide VOC emissions inventory for San Joaquin Valley, May-October SIP goal 18.1 tons/day

Top pesticide VOC products for San Joaquin Valley, May-October 2013 (draft) 8

Top nonfumigant VOC products for San Joaquin Valley, May-October* 9 *Glyphosate not shown because all products likely have low EPs

fumigant VOC regulations “Low-emission” fumigation methods required during May-Oct ozone season in San Joaquin Valley, Southeast Desert, Ventura –NEW – Methods using tarps with 60% buffer credit (totally impermeable film, TIF) approved Backup measure if trigger level (95% of SIP goal) exceeded DPR required to publish annual pesticide VOC emissions inventory report, including determination if trigger level exceeded

11 Overview of nonfumigant regulations (Title 3, CA Code of Regulations (3 CCR)) VOC content (emission potential, EP) thresholds specified to designate certain agricultural products as “high-VOC” or “low-VOC” For high-VOC products used in San Joaquin Valley –Pesticide dealer required to provide information to purchasers –Growers required to obtain a pest control adviser (PCA) recommendation for some applications Backup measure if trigger level exceeded in San Joaquin Valley: prohibition of several uses of high-VOC nonfumigant products –NEW – Backup measure likely triggered, final determination in Mar/Apr 2015

12 Active ingredients and VOC EP thresholds (3 CCR 6880) Restrictions on agricultural products containing top 4 nonfumigant VOC contributors in San Joaquin Valley o Low-VOC products feasible for most uses o Switching to low-VOC products achieves target reductions

13 Types of products designated as high-VOC or low-VOC (3 CCR 6880) VOC regulations include products containing abamectin, chlorpyrifos, gibberellins, or oxyfluorfen as the –“Primary” active ingredient; and –Labeled for agricultural uses All other products are excluded from VOC regulations DPR publishes a list of specific low-VOC and high-VOC products in annual emission inventory report, and posts to website

14 Abamectin products 23 low-VOC products (primary AI in ag product with EP ≤35%) –9 solids (dust, powder, granule) –14 liquids from 8 registrants 21 high-VOC products (primary AI in ag product with EP >35%) 25 excluded products (non-ag product or secondary AI)

15 Chlorpyrifos products 19 low-VOC products (primary AI in ag product with EP ≤25%) –10 solids (dust, powder, granule) –9 liquids from 5 registrants 18 high-VOC products (primary AI in ag product with EP >25%) 14 excluded products (non-ag product or secondary AI)

16 Gibberellins products 11 low-VOC products (primary AI in ag product with EP ≤25%) –8 solids (dust, powder, granule) –3 liquids Falgro LV Falgro 2X LV Progibb LV 14 high-VOC products (primary AI in ag product with EP>25%) 2 excluded products (non-ag product or secondary AI)

17 Oxyfluorfen products 11 low-VOC products (primary AI in ag product with EP ≤15%) –6 solids (dust, powder, granule) –5 liquids Galigan H2O Goaltender Oxystar 4L Pindar GT Willowood Oxyflo 4 SC 7 high-VOC products (primary AI in ag product with EP>15%) 14 excluded products (non-ag product or secondary AI)

18 Overview of nonfumigant regulations (Title 3, CA Code of Regulations (3 CCR)) VOC content (emission potential, EP) thresholds specified to designate certain agricultural products as “high-VOC” or “low-VOC” For high-VOC products used in San Joaquin Valley –Pesticide dealer required to provide information to purchasers –Growers required to obtain a pest control adviser (PCA) recommendation for some applications Backup measure if trigger level exceeded in San Joaquin Valley: prohibition of several uses of high-VOC nonfumigant products

19 Pesticide dealer requirements (3 CCR 6577, 6886) Always in effect Dealer must provide specified VOC information in writing to purchaser if selling –High-VOC product containing abamectin, chlorpyrifos, gibberellins, or oxyfluorfen; and –For use in San Joaquin Valley, as indicated by operator ID number NEW – DPR recommends that dealers inform purchasers of high-VOC products of prohibitions Dealer must indicate on retained invoice that VOC information was provided No requirements for sale of low-VOC products

20 Overview of nonfumigant regulations (Title 3, CA Code of Regulations (3 CCR)) VOC content (emission potential, EP) thresholds specified to designate certain agricultural products as “high-VOC” or “low-VOC” For high-VOC products used in San Joaquin Valley –Pesticide dealer required to provide information to purchasers –Growers required to obtain a pest control adviser (PCA) recommendation for some applications Backup measure if trigger level exceeded in San Joaquin Valley: prohibition of several uses of high-VOC nonfumigant products

21 Grower (property operator) requirements (3 CCR 6883) Grower must obtain a PCA recommendation if –Use a high-VOC product containing abamectin, chlorpyrifos, gibberellins, or oxyfluorfen; and –Applied in San Joaquin Valley during May 1 - Oct 31; and –Application to Alfalfa Almonds Citrus Cotton Grapes Pistachio Walnuts Grower must retain high-VOC recommendation for 2 years  These crops account for >90% of emissions from the 4 AIs  Switching to low-VOC products achieves VOC target emissions  Feasibility of low-VOC products for other crops uncertain

22 Overview of nonfumigant regulations (Title 3, CA Code of Regulations (3 CCR)) VOC content (emission potential, EP) thresholds specified to designate certain agricultural products as “high-VOC” or “low-VOC” For high-VOC products used in San Joaquin Valley –Pesticide dealer required to provide information to purchasers –Growers required to obtain a pest control adviser (PCA) recommendation for some applications Backup measure if trigger level exceeded in San Joaquin Valley: prohibition of several uses of high-VOC nonfumigant products

23 Backup measure: trigger for high-VOC prohibitions (3 CCR (f)) SIP goal Trigger DPR annual emission inventory report used to determine if nonfumigant prohibitions are triggered –Example: Fall 2014 report uses 2013 data to determine if high-VOC prohibitions triggered in May 2015 –Trigger level is 17.2 tons/day (95% of SIP goal)

24 Backup measure: high-VOC prohibitions (3 CCR 6884) If emissions exceed trigger level, high-VOC use prohibited for –Abamectin, chlorpyrifos, gibberellins, or oxyfluorfen products; and –In San Joaquin Valley during May 1 – October 31; and –Application to alfalfa, almond, citrus, cotton, grape, pistachio, or walnut –At least 2 years NEW – High-VOC prohibitions will likely be in effect for May-Oct 2015 and May-Oct 2016, final determination in Mar/Apr 2015 –DPR can lift prohibitions after two years if specific criteria are met Low-VOC products never prohibited

25 Exceptions if high-VOC prohibitions triggered (3 CCR 6884) Low-VOC products are not always feasible With PCA recommendation, high-VOC products can be used for –Chlorpyrifos to control aphids on cotton –Gibberellins applied at ≤16 grams active ingredient/acre –Oxyfluorfen applied at ≤0.125 (1/8) pounds active ingredient/acre –Section 18 or 24(c) applications –USDA/CDFA invasive pest requirements –Applications with precision sprayer (NRCS criteria) DPR can use annual report to add exceptions if specific criteria are met

26 Overview of nonfumigant regulations (Title 3, CA Code of Regulations (3 CCR)) VOC content (emission potential, EP) thresholds specified to designate certain agricultural products as “high-VOC” or “low-VOC” For high-VOC products used in San Joaquin Valley –Pesticide dealer required to provide information to purchasers –Growers required to obtain a pest control adviser (PCA) recommendation for some applications Backup measure if trigger level exceeded in San Joaquin Valley: prohibition of several uses of high-VOC nonfumigant products

27 PCA requirements (3 CCR 6558) If emissions do not exceed trigger level, PCA must still consider low-VOC alternatives (3 CCR 6556-no changes) If emissions exceed trigger level, PCA cannot recommend a high-VOC product –Containing abamectin, chlorpyrifos, gibberellins, oxyfluorfen –Applied in San Joaquin Valley during May-October; and –Applied to alfalfa, almonds, citrus, cotton, grapes, pistachios, walnuts –PCA can recommend high-VOC product for an exception listed in regulations. Recommendation must document which exception applies PCA responsible for knowing low-VOC and high-VOC products, and what prohibitions are in effect (annual report) PCA recommendation must be retained for 2 years

28 Key issues Compliance Inappropriate use of exceptions Switching to other active ingredients with higher VOC products Increasing use of certain products –Glyphosate –Bifenthrin –Fenpyroximate –Hexythiazox

29 Voluntary measures and compliance assistance Consult with county agricultural commissioners Read DPR conservation management practices guide for VOCs Switch to products with lower VOCs when feasible –VOC calculator – Web-based tool for calculating VOC emissions from agricultural applications of nonfumigant pesticides

Summary of dealer, grower and PCA nonfumigant requirements Regulation Issue Dealer Sale Requirements Grower and PCA Use Requirements Sales and uses with requirements Products affected High-VOC abamectin, chlorpyrifos, gibberellins, oxyfluorfen products Area affectedSold for use in SJVUse in SJV Time period affectedYear-roundMay 1 – Oct 31 Crops affectedAll agricultural crops Alfalfa, almond, citrus, cotton, grape, pistachio, walnut Requirements if trigger level not exceeded Provide VOC information to purchaser PCA recommendation required prior to use Requirements if trigger level exceeded Provide VOC information to purchaser PCA recommendation required prior to use High-VOC applications prohibited, with exceptions 30

31 Additional information and questions DPR web site: –“Join E-Lists” link at top of page –Quick Links tab, “VOCs” link DPR contacts –Randy Segawa, Special Advisor – , –Pam Wofford, Environmental Program Manager – ,