SR0085724_SSNL - Laserfiche WebLink

Home Browse Search

4.0 GROUNDWATER INFORMATION SECTION 4.1 Description of the depth and gradient of groundwater in the general area: The depth to ground water in this area is approximately 10 feet according to the map of"Lines of Equal Depth to Groundwater" published Spring, 2021, by the San Joaquin County Flood and Water Conservation District. However, a field measurement by Dillon & Murphy crews found groundwater at about 2.5 feet deep. Ground water has tidal effects in this area. 4.2 Description/discussion of any existing and/or potential groundwater contamination issues in the general location of the site: The concerns for groundwater contamination in this area are deemed high due to the depths involved. Insecticides, pesticides, and fertilizers typically could have a significant impact to groundwater at these depths. 4.3 Description of location (address/APN), type and construction of well and location (well head/kitchen tap)where water sample(s)were obtained: Water samples were taken from the well head at 7007 W. March Lane on August 17,2022 by Nathan Powers of Dillon&Murphy. 4.4. Description of constituents being tested for in the water sample: The water samples are being tested for nitrates and DBCP. 4.5 Description of how sample was obtained, handled, stored, and transported to the lab: The water samples were obtained from the well head at 7007 W. March Lane. The samples were taken by Nathan Powers of Dillon&Murphy, and driven directly to Precision Enviro-Tech. The samples were taken and handled in accordance with Precision Enviro-Tech requirements. The results from the test can be found in the Appendix. 4.6 Complete Chain of Custody document,including printed and signed name of third party sampler, condition of sample and date and time the sample was submitted to the lab. For Laboratory samplers, complete laboratory report to include the above noted information: The complete chain of custody document is located in the Appendix. 5.0 SOIL PROFILE INFORMATION SECTION 5.1 Site map showing the location,with dimensions, of the soil profiled pit on the parcel. There are no Soil Profile pits to show. When the soil profile pits were prepared, ground water was encountered at 2.2 feet and 2.5 feet. 5.2 Description of soil profile pit including depth and dimensions. N/A 5.3 Description of soil lithology as noted from test pit by appropriate professional using industry standard protocol. The Soil in this area is classified as Kingile Muck, Rindge Muck, Ryde Silty clay loam, and Valdez silt loam as stated in the Soil Survey of San Joaquin County,as provided by the United States Department of Agriculture, Soil Conservation Service. 2