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• : <br /> t rC•vs'r4",,.r,pr,..,u �.J"r '.':: � 1 �i'J <br /> Reference: H6SC 25241, 25292 - <br /> Adopt new section to read: <br /> 2645. Soil Testing <br /> (a) All owners of ex sting underground storage tanks <br /> implementing <br /> one f e monitoring alternatives described In <br /> ires <br /> Section 2641 of rhu daws�erenanitoringwhich ushallbimplementrsoil <br /> vadose zone or g ub3ectlons (b) through (n) of this <br /> testing pursuan to <br /> section. ` <br /> sample 3 <br /> shall be recovered <br /> 0alldiUnsturbedborings usedafor thelinstallation- This requirementmmay <br /> waived by the local agency when borings cannot be drilled <br /> le:air, and sampled using accepted techniques that do not introduce <br /> liquids into the boring. <br /> (cj but sampling shall not be <br /> Soil samples shall be taken at intervals of 5 feet or ess <br /> beginning at the ground surface, <br /> r table nor <br /> required <br /> bllow ittlehorwnoeprimary permeabilityin - <br /> which <br /> (d) ination <br /> A soil sample shallacing aso be spacingminterval. <br /> depth of a dry boring <br /> techniques that do <br /> and that allow the <br /> (e) Horing3 shall be drilled and sampled Y <br /> not introduce liquids into thperchedeandring saturated ,one ground <br /> accurate detection of p may be waived <br /> ed <br /> water. If this Cannot be accomplished usling <br /> techniques, the requirement for Boll or ground <br /> by the local agency; however, <br /> water monitoring system shall still be inatalle is not required <br /> Furthermore, once below the water table, <br /> It method that was <br /> that the wells be advanced using <br /> :� -.' used in the vadosa zone. <br /> (f� Boringsectionsb2648(t)iand (u)accordance <br /> articlethe provisions <br /> of Sub <br /> (gj orm the <br /> Soil samples shall be of sufficient <br /> soil vvolume <br /> apor and°s°tlfextract <br /> designated analYslrrplgeate analyses, if specified' <br /> analy3es and to provide <br /> (h) if mor than boring Ls utilized, composite samples <br /> If mor n of soil from the same depth from each boring may <br /> or laboratory analysis if such sample3 can be made <br /> be use prior <br /> to analysis and any <br /> wit t loss of constituents P <br /> 4. 19 <br /> - i <br /> L <br />