SU0011119 - Laserfiche WebLink

Home Browse Search

25 November 2015 AGE Project No. 15-3594 Page 23 of 26 breaks down or decays to form other elements . Radon concentrations generally differ among different rock types and can vary considerably within the same geologic formation . Radon moves from its source in rocks and soils through voids and fractures . It can enter buildings as a gas through foundation cracks or it can dissolve in ground water and be carried to buildings through the use of water-supply wells . Buildings with basements and concrete slab foundations are more susceptible to elevated levels of indoor radon gas . The inhalation of radon gas can cause damage to lung tissue. A common unit of radioactivity measurement is picocuries per liter (pCi/L) . The USEPA established the recommended safe radon level at 4 pCi/L . According to the USEPA, the subject property county, San Joaquin County, is located in a low radon potential area (Zone 3) , defined as having a 'predicted average indoor radon screening level of less than 2 pCi/L' . 7. 5 . WETLANDS As reported in Section 3 .2 . , according to the EDR Report (Appendix C) the subject property is not located within a National Wetlands Inventory . This data , available in select counties across the country, was obtained by EDR from the U . S . Fish and Wildlife Service . 7. 6 , REGULATORY COMPLIANCE AGE searched the subject property address , 161 East Transportation Drive, French Camp , California , on local , state and federal databases . No records were found regarding any outstanding regulatory permitting or requirements/directives in connection with the property . 8.0. EVALUATION Any deviations from the ASTM Standard Practice 1527E- 13 and USEPA AAI are presented below, along with the findings , conclusions , and opinions identified during the course of this Phase I . 8 . 1 . DATA GAPS AND LIMITATIONS A data gap occurs when a lack of or inability to obtain information required by this practice despite good faith efforts by the environmental professional to gather such information . Data gaps may result from incompleteness in any of the activities required by this practice , including , but not limited to site reconnaissance , and interviews . The largest data gap in research was 22 years , between 1915 and 1937 , with the earliest researched information being a Topographic Map dated in 1913 . Data gaps generally Advanced GeoEnvironmenfal, Inc.