Laserfiche WebLink
r <br /> . --Discussion <br /> Well MW-4 was installed in the last quarter and the first monitoring results are presented <br /> herein Groundwater flow direction appears consistent with historically observed trends The <br /> concentrations in Well MW-1 reflect an decrease of levels of TPHG and BTEX, and are attributed <br /> to residual contaminants in the soil strata in the immediate vicinity of the former tank pit <br /> Wells MW-2 and MW-3 continue to show that contaminants are not detected Concentrations at <br /> MW-1 are anticipated to continue to display an overall decreasing trend <br /> Monitoring Schedule <br /> The quarterly monitoring for this site is scheduled to continue at quarterly intervals It is our <br /> understanding that the San Joaquin Valley RWQCB has requested that all fuel oxygenate <br /> compounds be chemically analyzed by EPA Method 8260 in the future, and Wright will schedule <br /> the addition of those compounds to the program for the next sampling <br /> Limitations <br /> This report has been prepared for the specifically for the M & M site at 60 E 10th Street, <br /> Tracy, CA, and was done according to the State and local agency suggested guidance documents f or <br /> these investigations The interpretations, conclusions and recommendations made herein are <br /> based on the data and analysis for the water samples collected on-site and should be reviewed i n <br /> the context of the whole report Please note that reports of contamination must be submitted to <br /> the agencies in a timely manner Wright Environmental Services, Inc is not responsible to r <br /> errors in laboratory analysis and reporting, or for information withheld during the course of <br /> the study, and no warranty or guarantee is expressed or implied therein <br /> If you have any questions concerning this report, please call <br /> Sincerely, <br /> Wright Environmental Services, Inc N2 1262 <br /> CERTIFIED <br /> �{-A ge ENGINEERING <br /> n Affonso Christopher M Palmer GEOLOGIST <br /> rolect Manager C E G 1262, HG 246 4rE' OF CAV�4�� <br /> Attachments: Table 3 Historic Groundwater Chemical Data <br /> Figure 1 Site Plan and Groundwater Elevation Contour Map <br /> Groundwater Sampling Information Sheets <br /> Chemical Analytical Data and Chain-of-Custody Form <br /> Page 3 <br />