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i~ <br />Task 2 -Emulsified Oil Injection <br />This task covers conducting the emulsified oil injection to reduce VOC concentrations in <br />the area around and down-gradient of MW-E/E-deep. The major components of the <br />injection include: <br />Injecting emulsified oil into the six injection wells: For budgeting purposes, <br />CDM assumes injection at one well per day with approximately 6,300 gallons of <br />water containing 5,000 mg/L of emulsified oil. For this proposal,'CDM will <br />provide all potable water necessary for the emulsified oil injection. In addition, <br />CDM costs include purchase and delivery of emulsified oil. Emulsified oil is a <br />commodity txaded on the open market and subject to unpredictable cost <br />fluctuations. CDM's cost allocation for emulsified oil in this proposal is the <br />current cost of $1,050 per 55-gallon drum. CDM estimates that 23 drums of <br />emulsified oil will be required. All emulsified oil purchased will be used during <br />this injection event. Prior to placing the order for the emulsified oil, CDM will <br />obtain approval foz additional costs, if necessary. <br />Monitoring additional water quality parameters for one year in MW-EfMW-E <br />deep, AMW-]J1 deep, and AMW 2/Z deep on a quarterly basis: This Task <br />includes collection of two additional samples from each of the six wells for the <br />additional water quality parameters. Additional water quality parameters are <br />already collected at MW-E and E-deep as part of the regular semi-annual <br />sampling under a separate amendment. The newly installed wells will be added <br />to the regulaz semi-annual list. <br />Task 3 -Performance Reporting <br />Following injection, CDM will prepare a letter report for submission to the Solid Waste <br />Section discussing the results of the emulsified oil injection. The semi-annual monitoring <br />reports will include a section discussing the effects of the emulsified oil injection and <br />MNA. The additional groundwater data will be used to assess the effectiveness of the <br />emulsified oiI delivery to the subsurface and to assess the effects of the delivery on VOC <br />degradation.. <br />2. The responsibility of OWNER as described in Section 2 of said Agreement are <br />amended and supplemented ae follows: <br />Provide access to proposed drilling sites for injection and monitoring well installation <br />equipment and injection equipment. <br />3. The time period for the performance of ENGINEER's services as set forth in <br />Section 4 of said Agreement are amended as follows: <br />CDM will initiate work within 2 weeks of OWNER'S acceptance of this agreement. <br />Implementation of remedy will begin with 2 weeks of Solid Waste Section approval of <br />the Corrective Action Plan. <br />Page 3 of 4 <br />F-9 <br />Amendment 37.doc <br />Attachment number 3 <br />Page 111 of 199 <br /> <br /> <br />C <br />i <br />r] <br />~' <br />C' <br />C <br /> <br /> <br /> <br />i <br /> <br />n <br />C <br />i <br /> <br /> <br />