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ENVIRONMENTAL HEALTH DEPARTMENT <br /> Donna K. Horan, R.E.H.S. SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> s:" 2 <br /> Direero„ 304 East Weber Avenue, Third Floor earl Bergman, R .E.H. S . <br /> Al Olsen, R.E.H.S, Stockton, California 95202-2708 Mike Huggins., R.E.H.S. , R .D.I. <br /> e. <br /> Program Manager ger Tele hone: 209 468 -3420 Douglas W. Wilson , R .E.H .S . <br /> • C4� , FOFN` p ( Margaret Lagorio, R.E.H.S . <br /> Laurie A . Corolla, R.E,H.S, Fax : (209) 464-0138 Robert McCletlon. R .E.H.S . <br /> Program Manager <br /> Website: wwwsjgov.org/ehd/ Jeff carruesco, R .axs . <br /> VINCE ERARDI <br /> ERARDI VENTURES <br /> PO BOX 691000 NOV 2 $ 2um <br /> STOCKTON CA 95269 - 1000 <br /> RE: ERARDI VENTURES SITE CODE: 1229 <br /> 715 NORTH HUNTER ST <br /> STOCKTON CA 95269 <br /> On November 15 , 2005, one of the scheduled monitoring wells to be installed as proposed <br /> in ,Site Assessment and Inletzm Retuedirrtion lVork Plan dated August 10, 2005 prepared by <br /> Advanced GeoEn ironmental, Inc. (AGE), could not be completed on due to overhead <br /> power-line obstruction which belong to City of Stockton. It was decided that the installation <br /> of the monitoring Nell would be delayed until a shorter-tower hollow-stem-auger rig <br /> becomes available in order to accommodate for the overhead obstruction. It was agreed <br /> that the work Would take place at a later date during a separate mobilization. San Joaquin <br /> Counts' Environmental Health Department (EHD) requests you to install an additional <br /> monitoring well at a location east of the existing monitoring well NIW-4 inside the garage of <br /> the above-referenced site at the same mobility. NIW-4 currently marks the furthest sampling <br /> point to the east in the direction of the upgradient groundwater flow, and the lateral extent <br /> of the contamination has not been defined since MW-4 is impacted with petroleum <br /> hydrocarbon contamination. EHD requests you to take advantage of the cost-effectiveness <br /> of installing an additional well during the same mobilization when a smaller-sized rig is <br /> available. <br /> Submit a work plan addendum to EHD by December 2, 2005. Implement the work along <br /> with installation the above-mentioned unfinished monitoring well no later than December <br /> 31 , 2005. <br /> If you have any questions, please contact Jeffrey Wong at (209) 468-0335. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> C f7 �r <br /> Jeffrey Wong , Senior RENS � Nuel C . Henderson, Jr., PG <br /> LOP /Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> c: RWQCB , Central Valles- Region — James L. L. Barton, PG <br /> c: Advanced GeoEnvironmental, Inc. (AGE) — Tim Cuellar <br />