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N Former Apache Plastics - 2 - 19 May 2015 <br /> 2050 East Fremont Street <br /> Stockton , San Joaquin Co. <br /> • Injection Well Installation Report dated 24 December 2014 <br /> • Addendum to Notice of Intent dated 24 April 2015 <br /> There are 17 monitor wells , two extraction wells and five injection wells associated with this site . The <br /> Monitoring and Reporting Program , incorporated with this permit, requires sampling of 19 of the 24 <br /> wells associated with this site and one monitoring well associated with the underground storage tank <br /> 1 cleanup site , north , across East Fremont Street (Stockton City Cab MW-7) . Monitoring and reporting of <br /> remaining site wells is under the direction of the lead regulatory agency , the San Joaquin County <br /> Environmental Management Department. No additional groundwater monitoring wells are needed or <br /> anticipated at this time . Apache Plastics will be responsible for conducting groundwater sampling , and <br /> reporting of the results as described in the attached Monitoring and Reporting Program . <br /> A Contingency Plan was submitted by AGE in a letter response received 14 November 2014. AGE <br /> proposes that wells showing negative effects due to injection be pumped at a rate between 1 and 3 <br /> gallons per minutes until impacted wells are below action levels. Water from the wells will be stored <br /> on-site in a 20 , 000 gallon capacity tank. Once the capacity of the tank has been reached the water will <br /> be hauled to a licensed waste facility and properly disposed . <br /> The Contingency Plan to address any unforeseen negative impacts is as follows : <br /> 1 . The following wells are classified as compliance wells : MW-2, MW-8, MW- 11 , MW-21 and <br /> MW-22 . Compliance wells will be utilized as groundwater extraction wells , if deleterious by- <br /> products above action levels are observed in these wells . <br /> 2. For the purposes of this contingency plan , an impact to water quality is defined as one of the <br /> constituents exceeding an action level . Background concentrations and action levels are shown <br /> in the table below. <br /> Apache Plastics - Action Levels <br /> Shallow zone (56 Background WQO (ug/L) Action Level <br /> to 68 . 5 ft. b s) ((ug/L u /L <br /> Barium 344 100 344 <br /> Arsenic < 1 10 1 <br /> Copper 21 300 25 <br /> Zinc 60 2 , 000 72 <br /> Aluminum 616 200 616 <br /> Manganese 473 50 473 <br /> Iron 384 300 384 <br /> Cr VI <0. 2 10 <0. 2 <br /> Bromide 3 , 800 21300 3, 800 <br />