Laserfiche WebLink
a <br /> SCOPE OF WORK <br /> Task 1 <br /> JPCA will prepare the required drilling permits from San Joaquin <br /> County Public Health Service, Environmental Health Division (SJC- <br /> PHS-EHD) , complete a site workplan, a site health and safety plan <br /> and contact U S Alert to check on placement of underground <br /> utilities. JPCA requests that the present owner/tenant identify <br /> any on-site utilities and underground piping that they are aware <br /> of on the property. <br /> Task 2 <br /> JPCA will supervise the advancing of two borings to an <br /> approximate depth of 75 ft. or groundwater whichever is <br /> encountered first. Two - two inch diameter monitoring wells will <br /> be constructed so as to extend at least five feet into the <br /> saturated zone. <br /> 7 <br /> JPCA will also supervise the advancing of a boring to an ; <br /> approximate depth of 120 ft. or to the aquatard, if the aquatard <br /> is encountered prior to 120 feet below grade. The soil samples <br /> will be checked to see if contamination is still present. <br /> if the aquatard is encountered, drilling will cease immediately, <br /> even though the soil may still be contaminated. To continue <br /> drilling into and through the aquatard will require official <br /> permission from a San Joaquin County or California State Water <br /> Board executive, in writi�c . <br /> JPCA will use a C-57 licensed driller and 8-inch diameter hollow- <br /> stem augers. Soil samples will be collected at each 5 ft level <br /> interval or at significant changes in lithology commencing at a <br /> depth of ten feet, using a split spoon tube sampler loaded with <br /> pre-cleaned brass tubes. Soil samples collected in the lowest <br /> brass liner will be preserved by covering both ends with Teflon <br /> tape, capping with plastic capq and sealing the caps with plastic <br /> tape. Soil samples will be labeled and logged under Chain-of- <br /> Custody (COC) control. Soil samples will be stored in a cooler <br /> with 'ice, transported to a state certified laboratory for <br /> analysis with COC documentation. A maximum of 52 soil samples is <br /> anticipated to be collected, 14 from each of the well borings and <br /> 24 from the deeper boring. The boring locations are shown on <br /> Figure 2. <br /> One groundwater sample will be collected from each monitoring <br /> well, after the wells are purged and allowed to recharge. A <br /> clean dedicated bailer will be used to obtain the samples, then <br /> the samples will be placed in four 40 ml VOAs with Teflon septa, <br /> labeled, held in a cooled (4 Degrees C) ice chest and transported <br /> 2 <br />