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ENVIRONMENTAL HEALTH DIVISIr-' <br /> 304 E. Weber Ave. Third Floor <br /> F O. Box 388, Stoc n CA 95201-0388 <br /> Approved <br /> Denied (] <br /> W l Conditions 5,--Fr 4th <br /> Date q a S-11- <br /> I. Au-. Boit., t "-dm atm vt,Es Wright <br /> Environmental <br /> SttAu be -^NA"tE)) rV'VL % Services,Inc. <br /> M+---TKANOL.t el --, Tri 5JrfWdl.l <br /> t mf-1 TPTA61 M8, 0 196,(1 t lf)(... May 23, 1997 <br /> Fi�R.a itti'Q I.J O u--, room iywt' Project No. 4039-T <br /> Qf�rjGG. � � 1 + _ \` City of Tracy <br /> 520 Tracy Boulevard <br /> Tracy, CA 95376 <br /> Z• 4iiRiZ"t, LWO GaWkbUA1L2 Attn: Mr. Paul Verma <br /> 6—U-34ftlLM 4 RAIti $C- D090tMiNC1 lie: Site Problem Assessment <br /> Cage n' Play, Be East Eleventh Street, Tracy, CA <br /> FOR T49 ODry-9WVM- ?t5LLoD AT <br /> Dear Mr. Verma. <br /> TD'S 5 i t7a• AT L EkST 6 NE <br /> At your request, Wright Environmental Services, Inc. (Wright) has prepared the workplan for <br /> i3J►7��Ei StMtA- bC ff(Nt P assessing the contamination at the above referenced site. As you know,the San Joaquin County <br /> Public Health Services, Environmental Health Division (PHS-EHO) has requested that further <br /> To 'V(l✓ AiL 12� � G��u1111tL�1tSi� work be done to ascertain the presence and extent of contamination from the former <br /> underground storage tanks. <br /> t"1.0'7M'kJ DJ Www-) T* 0*6R' tldW1`rL <br /> r4P62U O 0 FF TVtt JSTS WpLes Background <br /> W I�Ci�L1sT0 1 D i t- ��y Qd1^� �L Two underground storage tanks (one 280 gallon and one 650 gallon) were removed by Wright <br /> on October 23, 1993. The tanks were located under the sidewalk adjacent to Eleventh Street. <br /> .'W SltAt f �jC Arl.� �{ � Soil samples showed 590 parts per million (ppm) Total Petroleum Hydrocarbons as Gasoline <br /> bCl�ht� f N i ✓ (TPHG)and 28.000 ppm of an unknown hydrocarbon. Low levels of Toluene,Ethylbenzene and <br /> Xylenes were observed. The sample collected under the 650-gallon tank also showed 1 ppm of <br /> Perahloroethylene (PCE). Approximately 125 cubic yards of contaminated soil was excavated <br /> and properly disposed off-site. <br /> 3. 1.e r(se: LASin' <br /> LT..jyf�►►i�� Technical Approach <br /> fkS �I�jGl1c�7GAJ t AV Z �� The technical approach to this project is to conduct a horizontal and vertical investigation of the <br /> AQ4?i�b�r site and vicinity. The area is somewhat constricted due to the proximity of the street and <br /> buildings,so a phased approach is proposed. Consistent with the City of Tracy requirements,a <br /> traffic control plan will be developed since some of the work will occur in the street. Soil <br /> borings and reconnaissance soil and groundwater sampling will be done at the locations shown on <br /> k r � n LT Figure 1. This should provide an assessment of the approximate contaminant extent in <br /> groundwater. The data collected in these borings will be used to select locations for permanent <br /> ll groundwater monitoring wells. This should allow the dissolved plume to be located and <br /> Q Ll(rATldIJ F �'� �'� monitored and cleanup approaches to be eveluated. <br /> Cage n'Play page t <br /> 4220 Commercial Dr.#5 - Tracy,California 45376 <br /> ((j p`jr1 k]�}Ol1S WG t G � Telephone(209)833-0758 - Fax(209)832-5152 <br /> TttAN <br /> G - l F C,ii -,pWq Tpth -. 70" f514`' 1T Pat= <br /> i i 2 D �4 s3dfL� �,t�o� t,�tl'Ovt�s $x{ V5/0'q-) <br /> P�-m�'�1t.��i , �a►2ast'�P� �ui,�1�a�6r�M, f��- 4$ Iiot/Gs fav 5c At�v �1)'t <br /> t To lg�; lLE F� ELO 3� <br /> 1�'1A151Vi� � CRQi� ct�NTta�ut F3Q �J`f . <br />