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W <br />Public Works - 2 - 16 July 2018 <br />1810 HazeIton Avenue <br />Stockton, San Joaquin County <br />Table 2 - May 2018 Groundwater Data <br />WELL Screen Interval <br />(ft bgs) <br />TPHg <br />(ug/L) <br />TPHd <br />(ug/L) <br />TPHk <br />(ug/L) <br />B <br />(ug/L) <br />T <br />(ug/L) <br />E <br />(ug/L) <br />1,700 <br />X <br />(ug/L) <br />6,000 <br />MTBE <br />(ug/L) <br />210 MW-1 20-60 27,000 <2000 28,000 1,900 5,000 <br />MW-2 35-60 2,500 <400 4,400 5,200 16 260 110 890 <br />MW-3 35-55 <50 <200 <200 <0.5 <0.5 <0.5 <1.0 <0.5 <br />MW-4 35-55 18J <200 <200 <0.5 <0.5 <0.5 <1.0 8.8 <br />MW-5 35-55 12J <200 <200 <0.5 <0.5 <0.5 <1.0 <0.5 <br />MW-6 35-55 <50 <200 <200 <0.5 <0.5 <0.5 <1.0 <0.5 <br />MW-7 35-55 12J <200 <200 <0.5 <0.5 <0.5 <1.0 <0.5 <br />MW-8 35-50 16J <200 <200 <0.5 <0.5 <0.5 <1.0 15 <br />MW-9 35-50 24J 640 <200 <0.5 <0.5 <0.5 <1.0 1.8 <br />MW-10 35-50 62 <200 <200 <0.5 <0.5 <0.5 <1.0 11 <br />Water Qual ty Objectives 5 56 100 1 150 300 1,750 5 <br />LTCP <br />Groundwater <br />Thresholds <br />Scenarios 1 & 3 -- -- -- N/A -- -- -- N/A <br />Scenario 2 -- -- -- 3,000 -- -- -- 1,000 <br />Scenario 4 -- -- -- 1,000 -- -- -- 1,000 <br />TPHg=total petroleum hydrocarbons as gasoline; TPHg=TPH as diesel; TPHk=TPH as kerosene; BTEX=benzene, toluene, <br />ethylbenzene, xylenes; MTBE=methyl tert butyl ether; bold=above Water Quality Objectives; LTCP =Low Threat Underground <br />Storage Tank Case Closure Policy <br />Central Valley Water Board staff received the Amended Notice of Intent (NO/) dated <br />2 July 2018, submitted on your behalf by Condor for permit coverage for the implementation of <br />ozone remediation at the Site. While the NOI requests coverage under General Order <br />R5-2008-0149, coverage would actually fall under the updated Waste Discharge Requirements <br />General Order for In-Situ Groundwater Remediation and Discharge of Treated Groundwater to <br />Land (General Order R5-2015-0012). A fee check in the amount of $4,699 was received on <br />12 July 2018. <br />Prior to issuing a Notice of Applicability, and in accordance with the General Order, a mandated <br />30-day public comment period must be completed by distributing a Fact Sheet to property <br />owners/tenants within 500 feet of the Site property. As such, please submit a Draft Fact Sheet <br />for Central Valley Water Board staff review that includes the following information: <br />Site name, location, and case information. <br />The start and end dates of the public comment period. <br />A brief case summary. <br />A brief summary of the proposed remedial solution. <br />Contact information for those wishing to receive more information related to the case. <br />A figure depicting the current maximum extent of hydrocarbon impact to groundwater <br />above Water Quality Objectives. <br />Along with the draft Fact Sheet, please also submit a map showing the Site property with the <br />boundary of the 500-foot radius, and a mailing list of owners/tenants for all of the properties <br />within the boundary. Please also include the mailing address for San Joaquin County <br />Environmental Health Department, as they also must be notified of the intent to perform <br />remediation at the Site. Upon approval of the fact sheet you will be able to mail the fact sheet to <br />all applicable parcel owners/tenants. Please allow a 35-day comment period, to allow for mailing <br />delays. All comments are to be submitted directly to the Central Valley Water Board office to my <br />attention.