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4r <br /> 1. 4 mg/kg utilizing EPA Method 8015 modified with a 5030 purge <br /> and trap preparation. I ' <br /> The Plan mentions "borings into the sat�_rated zone will be <br /> drilled to 20 feet beneath the top of the' a[cruifer neing <br /> explored" PHS-EI-ID questions this prac=_ce.and requests <br /> clarification on this procedure Due tc relatively consis=e_t <br /> historical groundwater depths in the La=nrop area, PHS-F.3HD1 <br /> recommends that monitoring well screen =engt='s be limited = 1.; <br /> feet maximum with approximately 10 feet of casing into :he <br /> saturated zone and approximately 5 feet above the dept_^_ to wafer <br /> at the time of construction of the well <br /> The Executive Summary submitted on Nov=zer 26 , =?5a is a=—= e <br /> and as soon as the thirty (30) day pun=_c cc:-mens per=cd is <br /> completed, the Plan with the above ncced cra r_ges -ay p-cceed <br /> PHS-EHD will notify you of the star= daze Of- =_^_e av <br /> public comment period <br /> Please submit a list of names of t_e =rsor_= resp^nsin_e fcr .-ne <br /> site during the remedial action and 24 nour =none numne_s w=ere <br /> they may be reached. A map {with .._e rc.-.=e <br /> nearest emergency medical facility needs to`,sunm===ed =o <br /> also. <br /> Direct your submittals to, and cor__ac= Michael =__urna az (2 C 9) <br /> 468-3454 should you have any ques:_or_s concerning your s---=- <br /> investigation. <br /> =teinvestigation. <br /> Donna Heran, REHS, Director <br /> Envir nmental Health Division <br /> Michael Infurna, 5vr REHS Diane M <br /> Site Mitigation Unit Supe= _- SCr <br /> I <br /> c : WHF - Michael J. Kloberdanz <br /> c - CVRWQCB - E . Thayer <br /> C , SWRCB Cleanup Fund - L. Braccc <br />