WORK PLANS - Laserfiche WebLink

Home Browse Search

CP0057 -3- Stockton 3 - Stockton Charter Way Commingled Plume W. Charter Way & S. Lincoln Street Stockton, San Joaquin County 15 August 2016 30 January 2017. Please include in this chart projected timing for connection of installed remedial wells to the remedial system, as well as the installation of the monitoring well northeast of the ARCO property. 5. Stantec addressed concerns that well SMW-14-49 has not been sampled since 2010, by stating that SMW-14 data from several sampling events was mislabeled in historical tables and reported as SMW-14-49. As such, Stantec has consolidated these data under SMW-14 in subsequent historical tables. However, this results in there being three (3) separate data sets, including differing depth to groundwater and groundwater elevation measurements, for well SMW-14 for the 14 October 2009 sampling event. The historical tables included in the fourth quarter 2009 groundwater monitoring report for the Former Texaco Station include only one of these data sets, so the other two data sets may be erroneous. Please address this data issue in the fourth quarter Groundwater Monitoring Report due by 30 January 2017. 6, On 29 July 2016, Mr. Brian Westhoff of Stantec submitted via email a draft Fact Sheet intended to notify the public about the proposed remedial actions, including a site map showing the extent of pollution in groundwater above drinking water standards. Also submitted was a distribution list of owners and occupants within 500 feet of the groundwater pollution. In several subsequent emails, Mr. Westhoff and I agreed upon language and layout for the Fact Sheet, and I sent him final approval via email on 11 August 2016. The final layout included an expansion of the extent of the groundwater pollution, and therefore required an expansion of the list of owners/occupants within 500 feet. The final Fact Sheet is to be mailed to all recipients by 22 August 2016, with a copy to my attention. The Central Valley Water Board requests the following: By 22 August 2016, please mail the Fact Sheet to the owners and occupants on the provided list, with a copy to my attention. The Fact Sheet should be uploaded to GeoTracker as a Notice. • By 30 January 2017, please submit a Well Installation Report summarizing the well installation activities. This Report should include: o The installation of 11 monitoring wells (including MW -9A), 8 ART wells (including an additional D zone well near SMW-11-122), 5 air sparge wells, 2 vapor extraction wells, 2 soil borings, and 1 permanent soil gas probe, and lithologic and analytical data. o An updated Gantt Chart with timing for the connection of installed remedial wells to the system and the installation of a monitoring well(s) northeast of the ARCO property. o Historical data table of SMW-14/SMW-14-49 water quality results. o A proposal for a monitoring well based on observations from borings B-30 and B-31, northeast of the ARCO property.