Paramount Air Quality Subcommittee MeetingProgress Park Plaza

July 27, 2017

• PresentedbackgroundinformationonHexavalentChromium(Cr6)andtheassociatedhealthrisks

• SummarizedSCAQMD’sregulatoryapproachandenforcementefforts

• DetailedeffortsCityhasundertakentoenhanceSCAQMD’senforcementmeasures

• UpdatedairqualitymonitoringresultsandSCAQMDenforcementactionstodate

• Summarizedoutreachmeetingscompletedtodate

• Airqualityreferencepointsforregulatoryenforcementandpublichealth

• UpdateonenforcementactionsbySCAQMD• Updateonairqualitymonitoringdata

• OfficeofEnvironmentalHealthHazardAssessment(OEHHA)hasalsodevelopedaChronicInhalationReferenceExposureLevel(REL)– 0.2μg/m3(equivalentto200ng/m3 )

Ø LevelsabovetheRELdoNOTindicatethehealtheffectswilloccur,thechancesofthesehealtheffectsoccurringincreaseatlevelsabovetheREL.

Source:OfficeofEnvironmentalHealthHazardAssessment(OEHHA)website

• OccupationalSafetyandHealthAdministration(OSHA)PermissibleExposureLimit(PEL)forairborneexposurestohexavalentchromiumis5µg/m3(equivalentto5000ng/m3)basedonan8-hourtime- weightedaverage.

• Source: Occupational Safety and Health Administration (OSHA) website

“OrdersforAbatementforAerocraftandAnaplexspecifya1.0ng/m3thresholdasanenforcementlevel,basedontheaverageacrosssamplesfrom3separatedays.

This1.0ng/m3thresholdisspecificallyforthepurposeofenforcingtheseOrders;inotherwords,thisisatriggerlevelforthesefacilitiestostoptheirCr6-producing(industrial)activities.However,the1.0ng/m3levelshouldnotbeinterpretedasatriggerlevelforresidentsorstudentstomodifytheirpersonalactivities.

Importantly,themainconcernwithCr6iswithLONG-TERMEXPOSURE.Therefore,reducingyourexposurestoCr6onasingledayorevenahandfulofdayswouldnothavemuchimpactonyourlong-termcancerrisk.”

• 28NoticestoComply• 30NoticesofViolation

Ø PriortoJan6:10NOVsü Aerocraft:2– Dec1,Jan6ü Anaplex:2– Nov29,Dec9ü CarltonForge:1– Dec9ü GoldenSt.Engineering:1– Dec12ü Procast:2– Nov5,Dec12ü ParamountPetroleum:3– Aug17,Aug26,

Oct4.

• SinceJan6:20NOVsü CarltonForge(17):• Jan:3,Feb– 6,Mar– 1,Apr– 3,

May3,Jun- 1ü Anaplex (1):Apr28ü Aerocraft (1):Jan15ü ST&IInc (1):Jan27

• 8CurtailmentOrders(CeaseOperations)ü Anaplex:3 - Feb3,Jun27,Jul22ü Aerocraft:4- Jan19,Feb14,Mar2,Mar17,ü CarltonForge:1– July27

• NewHearingü HearingscheduledforLubeco (northLongBeach)

scheduledforAugust23• Properenforcementstructureinplace

• Ordernotrelatedtohexavalentchromiumemissions.• Orderaddressesodornuisance.• Refrainfromgrindingoperationsfrom3to5p.m.

(Numberofconfirmedcomplaintspeakat3-4p.m.)• Ifthecarbon-embeddedprefilters areshowntobe

effectiveinreducingodors,curtailmentislifted.• IftwoNoticesofViolationissuedina14-dayperiod,then

the3to5p.m.curtailmentperiodisreinstituted.

*These hours may be changed

• Evaluatewhethergrindingwheelscontributetoodors,andifso,assesspotentialalternatives.SubmitawrittenevaluationtotheDistrictwithin45days.

• Within45days,provideatimelineforinstallationofpermanentcontrolstoreduceodorsingrindbuildingexhaust.

• ReturntothehearingboardonAugust31,2017andSeptember26,2017forstatusconferencesandpossiblemodificationoftheorder.

Numberofsitesaveraging1ng/m3orhigher

Month Total Samples Avg >1ng/m3

December 110 6January 154 2February 129 4March 150 3April 148 3May 189 1June 181 2July 120 17

Update for just Jul.

489samplestakenatschoolsites

Range(ng/m3) Percentage (Count)0 – 0.49 86%(421samples)0.5– 0.99 8%(41samples)1.0 – 1.99 3%(13samples)

2.0+ 3%(14samples)

Over1200samplestakenatsitesaroundtheCity(excludingschools)

Range(ng/m3) Percentage (Count)0 – 0.49 57%(671samples)0.5– 0.99 21%(252samples)1.0 – 1.99 13%(156samples)

2.0+ 9%(103samples)

School SamplePeriod NumberofSamples

Average(Mean)

50th Percentile(Median)

Wirtz Dec23– Mar17 24 0.12 0.10

Keppel Dec23– Mar17 19 0.14 0.13

Zamboni Dec23– Mar17 18 0.11 0.11

Gaines Jan16– July18 54 0.33 0.17

Gaines2 Apr4– July18 34 0.54 0.14

Mokler1 Dec23– July18 64 0.28 0.15

Mokler2 Dec23– July18 52 0.25 0.13

Alondra Dec23– Mar17 17 0.16 0.14

LosCerritos Mar20– July18 38 0.33 0.12

Tanner Mar20– July18 40 0.25 0.09

ParamountHSWest Mar20– July18 40 0.28 0.13

Roosevelt Mar20– July18 39 0.31 0.13

NearLincoln(#25) Dec23– July18 49 0.57 0.28

Numberofsitesaveraging1ng/m3orhigher

Month Total Samples Avg >1ng/m3

December 18 0January 37 0February 42 0March 77 0April 84 0May 97 0June 88 0July 46 4