Laserfiche WebLink
<br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />-, <br />} <br />) <br />) <br />1 <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br />) <br /> <br />I <br /> <br />VINCENT D. YARINA, P.G. <br /> <br />requirements. The original scope of work required two test holes drilled to depths of 200 ft below surface. However, through the <br />use of geophysical techniques, collection of good water quality data and interpretation of nearby geologic logs, Langan was <br />able to eliminate one of the test holes proposed by project Civil Engineer and reduce the drilling to 150 ft bls. This allowed the <br />client to realize a significant cost savings while still being able to meet the FDEP permit requirements. Mr, Yarina managed all <br />aspects of this project, and provided technical review and professional certifications for finished work products. <br /> <br />Residences at Atlantic East, Pompano Beach, FL - Langan provided a Reasonable Assurance Report to satisfy the <br />requirements of Chapter 62-528, FAC, for permitting of Class V, Group 6 underground injection control wells for deep injection <br />of stormwater runoff. Langan's evaluation of the water quality and geological data collected from a 200-ft-deep test hole <br />indicated that deep well injection could not be accomplished until-140 ft bls. The bottom of Biscayne Aquifer was encountered <br />at approximately 150 ft bls, which meant only a 10-ft production zone that would not be able to store the projected volumes of <br />stormwater. The project was located close to a public well field, which further complicated potential injection of untreated <br />stormwater. Langan researched the public well production zones to evaluate for potential conflicts with the proposed injection <br />zone and recommended a casing depth of 140 ft to satisfy FDEP requirements. Langan's evaluation of the nearby production <br />wells indicated that impact to production wells was not likely. FDEP approved the recommendation and the wells were <br />successfully installed, Langan secure FDEP approval for the wells and saved the client money by identifying a potential <br />stormwater drainage problem that could be addressed during the design phase. Mr, Yarina managed all aspects of this project, <br />and provided technical review and professional certifications for work products. <br /> <br />Water Supply Well No, 13, Medford, NJ - The project consisted of locating and determining the viability of a new water supply <br />well in the Mount Laurel-Wenonah Formation in the Coastal Plain of New Jersey. The Mount Laurel-Wenonah Formation is a <br />locally productive aquifer and high capacity wells have significant impacts on the piezometric surface of the aquifer. An aquifer <br />test was performed on an 18-inch-diameter, 450-foot-deep, steel cased 300 gpm production well. Mr. Yarina's analysis <br />indicated that the cone of influence of one foot of drawdown extended less than one mile down-gradient from the production <br />well and additional wells would have a negative impact on the aquifer; therefore, he approved the well at a reduced pumping <br />capacity of 150 gpm. <br /> <br />Page 3129 <br />