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ON <br />Mr. Steve Gatlin, <br />City of Roseville <br />Public Works Director <br />march, 20,11991 <br />Page 2, <br />4PI <br />Once the impacted soils are applied, fertilized, and, incorporated, vnth native soils, -three (3) grab <br />soil samples, will, be collected, and, analyzed for total petroleum hydrocarbons, (TPH) to ob Z <br />baseline data point. The application, area will, be rototilled monthly duriniz the treatment seasoT <br />IQMF - <br />41 <br />to promote aerobic degradat 'ion of the hydrocarbons by M',digenous microbes An additional thr4-.,:.. <br />1 <br />(3) grab samples, will be collected, "in August,,, 19,911 and, October, 19191. <br />Sampling in subsequent treatment years shall baclude three (3) samples taken, approximately in' <br />June,,,, August, and Octob�er., This samplIng, schedule Will be followed, until soff an'llytical results <br />2re 10 ppm THC'orl less,. 2 <br />If you have any questions or, comments regarding this matter, please feel free to contact, myself or <br />Jim Simonet at (61,2,) 854-5513MI <br />I I <br />Steven P. YUIr <br />Staff' Environmental, Scientist <br />114 FROMM$ <br />sy/ 730-04altr <br />.7 <br />e <br />ames F. Simonet <br />Project Hydriolgeologi,st <br />r i � A <br />ne c Lcla, <br />r 1140 NMI E N 'AL C U N 15, UI L TA MI t S <br />