Hartman, Jelena@Waterboards · of biological oxygen demand in the test drains (this may not be the...
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From: Rachel West To: Hartman, Jelena@Waterboards Cc: Francisca Johnson ; Lara Reising ; Melissa Turner ; Michael Johnson ; Michael Niemi ; Parry Klassen ; Rachel West ; Fregien, Susan@Waterboards Subject: ESJWQC Field Exceedance Report-September 2012 Date: Thursday, September 13, 2012 2:40:58 PM Attachments: ESJ_FieldResults_Discharge_091112.xls ESJWQC_Site_pictures_091112_Compressed.pdf Dear Jelena, As required in the Monitoring and Reporting Program (Order No. R5-2008-0005) for Coalition Groups, an Exceedance Report is being submitted to address the following issues: a) the exceedances, b) the follow-up monitoring, and c) any analysis or other actions the Coalition Group may take to address the exceedances. a.) On September 11, 2012 Normal Monitoring (NM) and Management Plan Monitoring (MPM) occurred at sites in the ESJWQC region. This was considered the fifth irrigation event of 2012. Field parameters were measured during sampling. Water samples were not collected at Berenda Slough @ Ave 18 ½ because it was dry during this monitoring event, however; sediment samples were collected in an area at the site where soil was moist. Exceedances of receiving water limitations for DO, pH and SC occurred. See attached Table 1 for details of field water quality trigger limit exceedances as well as the calculated discharge from each site. Site pictures taken from each of the monitoring sites during this event are also attached to this email as a pdf. Scanned copies of the field sheets are available upon request. b.) Field parameters are scheduled to be measured again at monitoring sites in the ESJWQC region on October 9, 2012. c.) DO exceedances are common in the Coalition region and may be due to low flow and/or high levels of biological oxygen demand in the test drains (this may not be the case for all samples). Sites sampled in previous events have also experienced frequent DO exceedances, particularly on clear, warm days when water temperatures, due to sun exposure, tend to be higher. Exceedances in pH occur occasionally and intermittently in the Coalition region and are difficult to source. The high pH exceedances experienced during this monitoring event may be due to natural conditions of the waterbodies, among other possible sources. Measurements of SC are consistently high at some sites in the ESJWQC region. Potential sources of salts and metals (detected in the field as conductivity) include upstream surface water, ground water or drain water from irrigated agricultural lands. All new exceedances requiring Management Plans as well as Management Plan Monitoring results will be evaluated in the ESJWQC annual Management Plan Update Report due April 1, 2013. Mike Johnson Thanks, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Rachel C. West Environmental Scientist Michael L. Johnson LLC 632 Cantrill Drive Davis, CA 95618 Tel: 530-756-5200 Fax: 530-756-5225 Adminsitrative Record Page 26490
Transcript of Hartman, Jelena@Waterboards · of biological oxygen demand in the test drains (this may not be the...
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From: Rachel WestTo: Hartman, Jelena@WaterboardsCc: Francisca Johnson; Lara Reising; Melissa Turner; Michael Johnson; Michael Niemi; Parry Klassen; Rachel West;
Fregien, Susan@WaterboardsSubject: ESJWQC Field Exceedance Report-September 2012Date: Thursday, September 13, 2012 2:40:58 PMAttachments: ESJ_FieldResults_Discharge_091112.xls
ESJWQC_Site_pictures_091112_Compressed.pdf
Dear Jelena, As required in the Monitoring and Reporting Program (Order No. R5-2008-0005) for Coalition Groups,an Exceedance Report is being submitted to address the following issues: a) the exceedances, b) thefollow-up monitoring, and c) any analysis or other actions the Coalition Group may take to address theexceedances. a.) On September 11, 2012 Normal Monitoring (NM) and Management Plan Monitoring (MPM) occurredat sites in the ESJWQC region. This was considered the fifth irrigation event of 2012. Fieldparameters were measured during sampling. Water samples were not collected at Berenda Slough @Ave 18 ½ because it was dry during this monitoring event, however; sediment samples were collectedin an area at the site where soil was moist. Exceedances of receiving water limitations for DO, pH andSC occurred. See attached Table 1 for details of field water quality trigger limit exceedances as wellas the calculated discharge from each site. Site pictures taken from each of the monitoring sites duringthis event are also attached to this email as a pdf. Scanned copies of the field sheets are availableupon request. b.) Field parameters are scheduled to be measured again at monitoring sites in the ESJWQC region onOctober 9, 2012. c.) DO exceedances are common in the Coalition region and may be due to low flow and/or high levelsof biological oxygen demand in the test drains (this may not be the case for all samples). Sitessampled in previous events have also experienced frequent DO exceedances, particularly on clear,warm days when water temperatures, due to sun exposure, tend to be higher. Exceedances in pHoccur occasionally and intermittently in the Coalition region and are difficult to source. The high pHexceedances experienced during this monitoring event may be due to natural conditions of thewaterbodies, among other possible sources. Measurements of SC are consistently high at some sitesin the ESJWQC region. Potential sources of salts and metals (detected in the field as conductivity)include upstream surface water, ground water or drain water from irrigated agricultural lands. All newexceedances requiring Management Plans as well as Management Plan Monitoring results will beevaluated in the ESJWQC annual Management Plan Update Report due April 1, 2013. Mike Johnson Thanks, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Rachel C. WestEnvironmental ScientistMichael L. Johnson LLC 632 Cantrill DriveDavis, CA 95618
Tel: 530-756-5200Fax: 530-756-5225
Adminsitrative Record Page 26490
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]
Station NameStation CodeSample DateCollection TimeGroupDischarge, cfsDO, 7 mg/LpHSC, 700 µS/cmComments
Berenda Slough along Ave 18 1/2545XBSAAE9/11/20129:10Irrigation5, Management Plan MonitoringNADry site, no water samples collected. September Management Plan Monitoring for copper and chlorpyrifos.
Deadman Creek @ Hwy 59535DMCAHF9/11/201210:00Irrigation5, Management Plan Monitoring4.194.92September Management Plan Monitoring for chlorpyrifos. Pesticides analyzed in toxic sediment only.
Highline Canal @ Lombardy Rd535XHCALR9/11/201213:20Irrigation5NAPesticides analyzed in toxic sediment only. Too deep to measure discharge.
Levee Drain @ Carpenter Rd535XLDACR9/11/201213:00Irrigation50.924.61864Pesticides analyzed in toxic sediment only.
McCoy Lateral @ Hwy 140535XMLAHO9/11/201211:40Irrigation5, Management Plan Monitoring5.318.74September Management Plan Monitoring for copper. Pesticides analyzed in toxic sediment only.
Rodden Creek @ Rodden Rd535XRCARD9/11/20129:30Irrigation52.85Pesticides analyzed in toxic sediment only.
NA - Not applicable; see comments.
&F
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Berenda Slough @ Avenue 18 ½, 09-11-2012, Facing North (upstream)
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Berenda Slough @ Avenue 18 ½, 09-11-2012, Facing South (downstream)
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Deadman Creek @ Hwy 59, 09-11-2012, Facing East (upstream)
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Deadman Creek @ Hwy 59, 09-11-2012, Facing West (downstream)
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Highline Canal @ Lombardy Rd, 09-11-2012, Facing North (upstream)
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Highline Canal @ Lombardy Rd, 09-11-2012, Facing South (downstream)
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Levee Drain @ Carpenter Rd, 09-11-2012, Facing West (upstream into the culvert)
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Levee Drain @ Carpenter Rd, 09-11-2012, Facing South (downstream)
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McCoy Lateral @ Hwy 140, 09-11-2012, Facing North (upstream)
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McCoy Lateral @ Hwy 140, 09-11-2012, Facing West (downstream)
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Rodden Creek @ Rodden Rd, 09-11-2012, Facing North (upstream)
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Rodden Creek @ Rodden Rd, 09-11-2012, Facing South (downstream)
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Adminsitrative Record Page 26491
mailto:[email protected]
