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GeosyntecD <br /> consultants <br /> SOIL GAS PROBE MEASUREMENTS 1111 Broadway,6th Floor <br /> Oakland,California 94607 <br /> �7 (510)836-3034 Fax(510)836-3036 <br /> 1� Project Name:. P��' S (` � ctS T Probe No.: ❑Sub-slab probe oil gas probe <br /> Date: LQ Z«A ttq Project Number: Z'� Mini Rae. & e al No.: O �-S t O C Lamp:10.6 /11.7 eV <br /> Site Location: .7 'C- ti Landtech GEM�9BD L dflll Gas Meter Serial No.M: 0� � `�-te n <br /> Weather: � p MDG 2402 Helium etector Serial No.: <br /> CJ <br /> Field Personnel: � '� Tracer Gas: elium ❑Other <br /> Recorded By: r` C' <br /> Q2 Surface Type: Asphalt ❑ Concrete ❑ Grass ❑ Other 0 1 Casing Volume Q5 Shut in test prior to pneumatic test completed,4710 in.H2O held for(POseconds. <br /> ❑Sub-slab <br /> Surface Thickness inches/centimeters `Unknown r0J L c ©Start of Pneumatic Test: ' <br /> (i.e.,asphalt or concrete) Soil gas probe (L) <br /> Elapsed Time Pump Well Head <br /> 4 (min.) Flow Rate <br /> uum <br /> Initial vacuum (prior to pumping) in.H20 (LPM) in.H O <br /> 0.1 0 <br /> 0 Field tubing blank reading (ppm ) completed? BYes ❑No PID Readingy ppm„ S 0.2 (?_ <br /> ® Shut in test prior to purging completed? Yes ONo E] 0.5 <br /> Purging Tracer Gas <br /> VOCs <br /> Date Start End Elapsed Bag Purge Cumulative CH, CO2 02 Shroud(%) Sample by PID <br /> Time Time Time Volume Rate Volume (%) N M (ppmV6 (ppm„) <br /> (min.) (L) (LPM) (L) Min Max (circle one) <br /> i3so 51 6- Z ( _ 3 0 1S_S 3 2 3% 3--)r-5 �- <br /> (35� i3ss '3 f b _ -L- 2 -0 ( L> _ c-0 33 I----+-3 2y9.� <br /> 13SS i ©� ti 3 _ -7-77) 0) `t_ c0I 5 3Z i S-� 2� . <br /> 10 Helium concentration in field screened samples is less than 5%of minimum concentration in 11 Shut in test prior to sample collection completed? Yes dNo ❑ <br /> the shroud? ❑Yes ❑ No Note:1%helium=10,000 ppm <br /> 12 Sample Collection <br /> Date Time Sample ID Summa Canister ID Flow Controller# Vacuum Gauge# Initial Vacuum Final Vacuum <br /> (in.Hg) (in.Hg) <br /> sV 3� Lo0ZLf9(9 `1 IIS z3oSs 3 0. 8 i. Iz <br /> s <br /> Comments: C 1L n40`t L-4 _� t -I �� �� l9`' Q ►. <br /> N^A -A S+r 4v.fi vrti�� w`.0�w S v�S �� t..-}A— - ' �y�7�►^� i civ 5 <br /> 1.�' \�'�Sv��l K QN\•"\ ��`1ti vv.rl •�O (�\\�C't �'1/•Q�JUl�2,IMA^�� f 1"� ` 1��° - 7 S�" �,k`� `�bv� �}��� <br />