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Messrs. Keaten and Gebhaq - 3 - • 19 April 2006 <br /> Item Comments <br /> No. <br /> ii. It appears that not all the groundwater monitoring wells identified in the 18 April 2005 <br /> Revised Monitoring Well Installation Workplan and Groundwater Sampling and <br /> Analysis Plan (Workplan/SAP) prepared by Hydrofocus, Inc. are reported in Appendix <br /> A. The Workplan/SAP was approved by the Regional Board on 22 April 2005 and a <br /> Workplan/SAP Addendum was submitted on 26 April 2005. <br /> Table 4 of the Workplan/SAP Addendum lists five wells to be monitored at the Pond 3 <br /> MBR and Storage Basin E location; however, only one well was sampled (Well <br /> MBRMW-4). The four wells that were not sampled are Wells KMW-4, MBRMW-1, <br /> MBRMW-2, MBRMW-3. A cursory review of the data provided for the River Islands <br /> land application areas reveals a similar pattern; results from all the wells in the <br /> monitoring network were not reported. Of the 14 wells that are in the monitoring <br /> network for River Islands, only 11 wells were sampled and one well appears to be <br /> incorrectly located on Figure 6(a). (The well in question is MWR-25). The three wells <br /> that were not sampled are Wells MW-4, MW-27, and MW-28. <br /> iii. The text below Table 1 in Section 1.1 states the recycled water pump station is located <br /> at Pond B but Section 5.1 of the RWER states the pump station is located at Pond A. <br /> iv. Section 2.0 identifies Pond No. 3 as emergency storage. However, Finding No. 17 of <br /> the WDRs defines emergency storage as the 0.95 million gallon (Mgal) flow <br /> equalization tank. If Pond No. 3 is used for emergency storage, the water might not be <br /> disinfected. Discharge of incompletely treated wastewater to Pond No. 3 can have <br /> significant impacts to the application of wastewater and may require revision of the <br /> Title 22 Engineering Report. <br /> V, For the land application areas described in the RWER, the statement regarding TDS is <br /> acceptable. If additional land application areas are added, please include the <br /> statement as appropriate. <br /> The RWER does not contain the information required by the WDRs and does not adequately <br /> describe how the City of Lathrop and Califia LLC will operate the wastewater treatment system <br /> in accordance with WDRs Order No. R5-2005-0045. Staff cannot recommend that the <br /> Executive Officer allow an increase in the flow limit until the items listed above are adequately <br /> addressed. The monthly average flow limit remains at 187,000 gallons per day. <br /> If you have any questions or wish to arrange a meeting, please contact Timothy O'Brien at (916) <br /> 464-4616 or me at (916) 464-4732. <br /> MARK . LIST, P.G. C ief <br /> Waste ischarge to Land Unit <br /> cc: Joe Spano, California Department of Health Services, Stockton <br /> Mike Huggins, San Joaquin County Environmental Health Department, Stockton <br /> Michael Wademan, P.E., Nolte Associates, Sacramento <br /> W:lStaRtObrieh'Man Joaquin\Lathrop_WWTP\MBR Phase Neaten 11 Apr 06,dae <br />