|
.l./_ Y a-• � -• d [ Yom' Y �l Y ` * F .. +y ,t
<br /> 't'+,r • ,.J�' ' iJ`� t.�-�.J,. yl~�._al _ r ` _ y # . f i 4? I' ' Iiii�. .
<br /> F
<br />' - + _ - -� .'-r^ �_�'r t �r'' _ ; P - —• Fioject 113-13 - r
<br /> October
<br /> �� •� '
<br /> Octr 12,1993 Y
<br /> ` ., " , t L' , - - 4'yzv a •'K kr. �y>- ,s s ;• �r F Y�F_>, avY ri'- ,�L,.r • f,j wx?' Page 2'J 'ya,"F
<br /> S r
<br /> #
<br />•+�� �' `�r't=" "J.7t il��� �•^rf'+� • � •-isr"-a °t� a�lw= ._r js' �.
<br />�il =,. 'Ay fourth inox►itoringFw U_vas;din talle<�� P -Ace—i Env�ronmenfal`Serviees at the site . .
<br /> on September 0;A 991:,Sod sam-les;anal zed-from the boring were all non-detect f6r
<br /> ti .a..r.5 J- '- } i rKl G. l ' l k 77
<br /> i
<br /> TPH-g and BT>.X.���roltndwater sampesabtaine� on'September` ' 199 from+all+� l
<br /> ..r ! r _ Y.F µ K .'' /
<br /> „fourmonitorlft w,ells,were<also nod-divte�ct fo�"i�'H-g,and BTEX: Depth #o
<br /> gr'otutdwatei•wa§28 to 29�fee1l,below,g o'undY surface:
<br /> � �, �• � - � , 1 .._ M . S A�� , � .. ` L
<br /> r �• "•`rN� F . _ -.. � .'�,` �• �
<br /> r`Anraquif pump;te t was done'ley;Parke; lirwv onmental,5ervice� at the site October=
<br /> 1546, 1991, and it--showed that all;four-monitoring wells^are in the some agtufer. s ,�. .
<br /> Atr _ R � � � ,, r•
<br /> this time norcleanup efforts have been;implemented Decisions concerning,' "I.';
<br /> _ future investigations�ar rremediation,will-be`:dis�cussed'•after four 4uarterly,,
<br />• �, WTM ,-„mormoring reportsare`cbmPleted.
<br /> ti Sox ' S`; II.` Cilrrent
<br /> a a F'.�ty.,Y�rrry� r f h'i es1� { r,. 1L}« �y �"^ Y1�'rr -.:4 � f, Yf.i -_ ~ � i •F, � y M1• ,^ ; , _ w J. �1�1
<br /> } = Groundwater sampjT,were obtained on July_f, 1.993.Prioryto sampling,+groundwater y f
<br /> j elevation measurements were+obtained. Results are presented+in the table
<br /> � r < r x.s' '' - -+r , k� s = L s , ••7� �, -7 - wt.; „ + 4 1 -y_ ` �� r'{.
<br /> Cheaper Store #76;�`�'
<br /> 890 North Man'Street,"Manteca,'aCaItfornia "
<br /> "r . GfoundWater..-Measu4ement Results- ` a
<br /> Measured-b%t July,
<br /> 1993,
<br /> 't� i J
<br /> 1ViW-1 r '`L`.MW-2' MW-3'�' 4_ MVV=4
<br /> 4
<br /> Well Elevation 33.12 F 33.22 33.55 r� % r • '� 33.66
<br /> Depth to GW'- 27.48 27.24-` - - - _ 27.691,, ` .-28.U$
<br /> GW Elevation _ - '5.64 - :-5.98 ' ' 5.5$
<br /> * elevation above mean sea level, in feet
<br /> Shallow groundwater measurements indicate the water fable is approximately three
<br /> feet lower than measurements taken in March, 1993. As shown on the-attached
<br /> groundwater flow directiondrawing, the”flow`du'ection is�toward-the soutfieast,
<br /> unchanged from:the Marcl%+1993, measurem4W.Y.
<br /> ' e�" " Y -s t- }1.31„ � {� _ , e .,a 't'-r T� _ r• .J "fY x� e'��5r L+ i4t f..M� _,k wr j.-.al
<br /> tiiSr3r" "°e,`_ -
<br /> mo well was purged'using'an-elec#ric submersiT�Ie'pump prior f0 - -
<br /> Each
<br /> sampling Approximately 5 gallons was removed from each well, which equaled aC
<br /> least three well volumes per well. All purge water was,placed ift`a sealed-metal 55 =`:-`k -Z
<br /> gallon drum (DOT 17H) After each well was purged, a sample was taken using a
<br /> disposable PVC bailer. The water from each well was placed in two 40 milliliter vials =�y
<br /> filled so that there was no air (head space) remaining m them Samples were labeled' _s,
<br /> and placed on ice in a cooler for transport to a state certified hazardous-materials _r
<br /> testing laboratory, McCampbell Analytical of Pacheco, Cahforrua. Before the'-next
<br /> well was purged and sampled,the pumpawas run in one btiickef-v ith:non-p#ospha`te
<br />•� detergent and two separate Buckets with tap water. All purge watef and`equipment
<br /> wash water was placed in 55 gallon steel drums and remains on-site. When,the =z
<br /> s ,�f Y. '-�J r"�3 �'• �+r ."`• � ' �r �ti x . � 4e i �r+" -.r 4k .Yi � ti s s ^fir_moi. � h
<br /> .1 �*" 'ice+-- FYb^ 0 y.� ,�:r_ar"74 , a
<br /> Parker;Environmental Services 190 East,~70 Street Pit'A CA 9¢565-6116 ,k , "ter, tJ4
<br /> Phone (510) 439-2024 Faz`'{510) 439-2566 t;
<br /> y �,' �j.4 _ "+,",, ` x '�:' -' ^i � r3 T �°,- �y i,�.,.�Isy �;S ..,��� �\.. �`' vi r•,!`�' . :e'r'r}� ; ..�c`;r4.�yc cu• r�,` "t
<br /> , Zr, b 9 s �„f- d '"1 ♦ 1� tr _ ! ,,�. hits �F ` * , `r' L Y ,L.I J
<br /> 1 _ -
<br />
|