Laserfiche WebLink
Subsurface Investigation : Ground Water Investigation Plan <br /> Former RIPON FARM SERVICE-RF Land <br /> 22871 South Highway 99 (938 Frontage Road) <br /> Ripon,California 95366 <br /> 1.0. INTRODUCTION <br /> At the request of Mr. David Isola of behalf of Mr. Alan Fetters of RF Land, Advanced <br /> GeoEnvironmental,Inc.(AGE)has prepared the enclosed work plan for installation of four ground <br /> water monitoring wells at former Ripon Farm Service(RFS), located at 22871 South Highway 99 <br /> in Ripon, California (site). The location of the site is illustrated on Figure 1. A plan of the site, <br /> including land use, is illustrated on Figure 2. <br /> The plan was prepared to defend against allegations within the City of Ripon cross complaint of <br /> massive nitrate contamination at the city well Number 12 west of the Highway 99 and Jacktone <br /> Road interchange,caused by the Ripon Farm Service(RF Land)operation at the above referenced <br /> address. The ground water investigation plan has be prepared to determine if activities at the RFS <br /> facility have contributed to possible high nitrate concentrations in local ground water. <br /> This work plan is prepared in accordance with Central Valley Regional Water Quality Control Board <br /> (CVRWQCB)guidelines by a Registered Geologist as defined by Chapter 12.5 Article 4, Section <br /> 7850 of the Business and Professions Code. <br /> 2.0. BACKGROUND <br /> The site is located in a flat industrial/commercial area in northern Ripon,south of Jack Tone Road <br /> (Figure 1). The site is currently operated by Ripon Farm Service (RFS), a company that stores, <br /> batches and delivers fertilizers in bulk and diluted forms.The eastern portion of the site is dirt-and <br /> gravel-covered and consists of a wash-rack containment area with two concrete holding ponds and <br /> two storage buildings(Figure 2);the central portion is asphalt-and concrete covered and consisted <br /> of bulk fertilizer preparation in containment areas and storage buildings; the western portion is <br /> covered with compacted gravel and asphalt and consisted of a storage building/office,truck scale <br /> and a former automotive shop. <br /> A petroleum-hydrocarbon release from former underground storage tank(UST)at the northwestern <br /> portion of the site is currently under assessment and post remediation monitoring, utilizing five <br /> ground water monitoring wells and an assortment of remediation wells.Remediation by soil vapor <br /> extraction and air-sparging techniques have mitigated a significant portion of the dissolved <br /> hydrocarbon plume under the western portion of the RFS site. <br /> Advanced GeoEnvironmental,Inc. <br />