ARCHIVED REPORTS FIRST QUARTER GROUNDWATER MONITORING REPORT FEBRUARY 2014

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' Table B - Historic Diesel Thickness Measurements and Product Recovery Data(06118/99 through 3131/14) Depth[o Cumulative Date Recovery Floating Depthm Diesel Diesel Operations and Maintenance Notes Well Diesel Groundwater Thickness Removed ' (gallons) RW-2 13.06 13.12 0.06 19.70 The skimmer pump regulator and battery were not operational.The line pressure was functional;however,the tank pressure was not.Absorbent sacks in RW-2 and RW-4 4/13.03 RW-3 13.19 13.39 0.30 2.80 strained;a negligible amount of product recovered.Skimmer pump removed from RW-3 ' and installed in RW-4.Recovery socks were reinserted in RW-2 and RW-3. RW-4 12.02 15.58 3.56 42.45 Approximately 3.5 gallons in product recovery barrel. RW-2 13.06 13.14 0.08 19.70 Skimmer ptanp removed from RW4 and inspected.Skimmer pump was reinstalled in RW 4 and the pump cycle act at(6)5-minute cyclesiday.The N2 tank supply tank and battery ,_03 RW-3 13.02 13.51 0.49 2.80 were replaced and a new regulator was purchased and installed.The pump cycle was reset at(3)3-minute cycles per day.Absorbent socks in RW-2 and RW-3 stmined and RW-4 12.58 13.05 0.47 49.45 replaced;a negligible amount of product recovered.Approximately 10.5 gallons in product recovery barrel. ' RW-2 13.16 13.37 0.21 19.70 Initial measurement of the product recovery barrel indicated approximately 22.75 gallons of diesel product.Skimmer pump left in RW-4:pump cycle reset to(I)5-minute 522/03 RW-3 13.02 14.34 1.32 3.80 cycldday.Absorbent socks in RW-2 and RW-3 removed and strained;a negligible ' amount of product recovered.Approximately I gallon of free product was bailed from RW-3 and added in the product recovery barrel.The absorbent socks were replaced in RW-4 12.77 12.82 0.05 61.70 RW-2 and RW-3.Approximately 23.75 gallons in product recovery barrel. ' RW-2 13.85 14.34 0.49 19.95 Skimmer pump in RW-4 set on continuous mode for 24 minutes;pump cycle then reset to (1)5-minute cycle/day.Approximately 11.75 gallons of product recovered from RW-4. Absorbent socks in RW-2 and RW-3 removed and strained;a negligible amount of 77/03 RW-3 13.63 15.05 1.42 5.05 product recovered.Approximately 0.25 gallons and 1.25 gallons of free product were bailed from RW-2 and RW-3,respectively,and added to the product recovery barrel.The ' absorbent socks were replaced in RW-2 and RW-3.Approximately 37 gallons in product RW-4 13.05 15.32 227 73.45 recovery barrel. Product recovery barrel measurement indicated approximately 46.75 gallons ofpmduct. RW-2 14.29 14.87 0.56 19.95 ' Full tank removed and replaced with an empty recovery barrel;skimmer pump set to continuous mode.Full product barrel set next to diesel AST basin.Skimmer pump in RW- 8/8/03 RW-3 14.23 14.94 0.71 5.05 4 set on continuous until no product recovered;pump cycle then reset to(1)10-minute cycle/day.Approximately 10.25 gallons ofpmduct recovered from RW4.Absorbent socks in RW-2 and RW-3 removed and stained;a negligible amount ofproducl ' RW-4 13.58 15.61 2.03 83.70 recovered.The absorbent socks were replaced in RW-2 and RW-3.Approximately 0.5 gallons in product recovery barrel. RW-1 13.88 13.90 0.02 Skimmer pump limed off;left in place on RW-4.Groundwater measurements in the ' RW-2 14.46 15.14 0.68 19.95 recovery wells indicated that the water level was insufficient to support skimming.The 8119/03 RW-3 NA 14.39 NA 5.05 product layer in all recovery wells was insufficient for bailing to be effective.The RW-4 NA 13.47 NA 83.70 skimmer was deactivated pending further groundwater elevation evaluation. RW-6 11 14.30 14.51 0.21 RW-1 14.01 14.03 0.02 ' RW-2 14.54 15.27 0.73 19.95 Skimmer pump deactivated and left in place in RW-4.Groundwater level in wells RW-3 14.51 15.07 0.56 5.05 insufficient to support skimming o eations.Product layer insufficient far bailing to be 829/03 RW-4 83.70 ova 6 P Y g effective.All recovery wells close to dry. RW-5 - 17.95 - ' RW-6 14.42 14.45 0.03 RW4 14.07 14.08 0.01 RW-2 14.56 15.65 0.09 19.95 Product recovery barrel measurement indicated approximately 3 gallons ofproducl. 9,5,03 RW-3 14.55 15.01 0.46 5.05 Skimmer pump amain deactivated and in place in RW-4.Groundwater level in wells RW-4 13.91 15.56 1.65 83.70 insufficient to support skimming operation.Product layer insufficient for bailing to be ' RW-5 - 14.00 - effective.All recovery wells close to dry. RW-6 14.40 14.66 0.26 RW-1 14.04 14.05 0.01 RW-2 14.61 14.65 0.04 19.95 Skimmer pump remains deactivated and in place in RW-4.Groundwater level in wells RW-3 14.62 14.85 0.23 5.05 ' 9/19/03 insufficient to support skimming operations.Product layer insufficient for bailing to be RW-4 14.00 15.20 120 83.70 effective. RW-5 14.50 RW-6 14.50 14.51 1 0.01 Skimmer pump deactivated and left in place in RW-4.Due to low gmundwater elevations being insufficient to support skimming operation,no monitoring occurred between ' Sc comber 19,2003.and December 8.2003. 1 tX:\Prcjecflaoo-pdk1838 PLOF Diesel Limol838RRep nls\1014\Ta1b1e B.xls Page 5 of 30