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' "-cF"-�'`K'v4• S "-!•x� � +v,� y'nr...!n'^'.+4s•�'�k � "�.•*�„'� -Fti:�K �., '�'• s� .,y x-�3,r �,{,'. x�r'�' ��. k;:��'�� �+� "`,
<br /> ,r _ - ^t _ { � :. r+d'`+':y>• 'wb,.;r.;.' a >19'cxi '�3 '- `1 ,. .. .q,�a' tir' .�F';. Yy'' F3 ,tf'+*le±':€r� y; F v/• *:-J, k, r -r::'
<br /> •, n ,. M i - �'•d.- s:'�.1 � .� t ,t ya �'t:F 9C r 5S . t� itF'J�} r+ r a"' t- j - ,+ y
<br /> k x Praject'1.1 26 Page'5''
<br /> Table 2 1 '
<br /> - Water. `Sample Analysis Results
<br /> t15 hast Grant Line RoaclJ.,Tracy; Cali€oriva { 5
<br /> r
<br /> an afy
<br /> •wF ; •.1 .f #r$x-Sf �4 kt '``/�! �J `.�- Flf '�yj'� R �ww fi '.7l` Y aY•-.IM:r, rt. q$.5 'Tt;`wl.'.. i�" 2R}1S�e�tl. P � z.dhn,�,; ffil4ir�1FN>� 4, - YI
<br /> 1:: " Y X w{ ayvil=' .x». ":s 7"5rP'+Gant! :x_ 'e.,$' ` :; iX ,rr`'-ate:i�'
<br /> '< H� '. ` Tolu it #Ethybenzene�rylee � � tr .
<br /> { Sample # ' lenzene2'� � e ,
<br /> ♦,.'. 'r=� w i�c •-"CiP �..t� kt'�" ee�]_'.�q_�(� �!"4a��� 7��.,e y��f ��'..d" ��S� e �•501
<br /> .r Rl��T.
<br /> •'1�IlJ 'U r {t Utio+ .fi�'�y�y ``0 �.`�` 'at� Y, `r*•�
<br /> ale" Ax r k
<br /> k it y fY�a ;, `JAZ gw „ e�r��j •.y r ..
<br /> ""- �'r,9 r G r nr`..3-+�'" '� 'a7V Vi ..7.�rx �s y`1 ;"'rxE ` +•'e''�,r� 4I� ',rti�' j„"<�.sEef .. } ,r M ;, La3U�
<br /> y :J ,?.:ql 'r'
<br /> t+.. �3' }H 'y�°? �r: Q r �£ ,'1A mS.�Y -w..,"��K�;e�"�` yy"'LV -<Ot►-7. 'fir.+, '' ttr:rrC�-;JR'- F.cy( 4',�: y .7V' i '-'. 'c)��j•` z_C F
<br /> , a y •? �.�. !l1..=.,r,.v S� q, '.,t- '' l,z,l .,•:.'Y'4. )e F f �Yl Ys.,; ._' #r L!,, 1�.i ..L•a•.L � K..4� 1',
<br /> �. :',. ,�� �.&•:. �. �
<br /> M• 5 •e
<br /> ,7j[� C (��
<br /> YY `'i r •� 4 -�VV V�JLJ�t p"'� 700 KYr• � "� - �'rl.�Vj� JZVV.��
<br /> 3{ h- i y� 1sb f� `.w �.A:. t �, d '�,^• y3--f J•F,pAF�v m,: _ r
<br /> ,-W , -,7 r '7 .k"}'F y..r-, i"'S' t.� I "37,000"
<br /> d: x 7 xi r� r F
<br /> !. ,11,000 n={'r,, ^. 1 'aJ17�0�f' y -'100 �� r w 3/rj
<br /> �•' 'd /� ,((��(�� L ,e'^-: .rS „'J.r� t• 'x-" •�"y < yyy i rt> . �,r., r 7 ,.#7 ��,a „!�/�.Ja�J�x -Sfi •x { >.- y .4
<br /> ZO l'J00- -N 0.TIf e f •: Oy£sr.+ v Ara 3-y�'' S7 re `.`� �'y'{r /
<br /> r�� ✓ °f`",e- 'LrCiVl7 -.1
<br /> u.. � < ,L.p ,:� '•r,r•rs �, - x r v:1*in rr�S $yf.v3ri r-
<br /> Concenahons.are in' arts "Fer billion,
<br /> or, L. ND Not Detected f� ,� �. 4w ,,
<br /> tF!r;b-;"-"`. . .-, �ar y.t..t. �..;. Y a. � ~' J °C�..vA.2r r, ,!.r�� +�3'" '3` yti"r`w•`'�}r �. �'4�i•..5 sem° _.
<br /> The=sample # ref71,
<br /> ers:M'the-number ofq. a borehole that supplied the'sample
<br /> skrl-iw..rl:4ptx �.,s.e {sF.v-r .'4r��,-S d, - A' ;r�`Yr"",II�� Asa,'-•� �y, °r'�j J�
<br /> c•..:r _Ti F h.s, J .�,. -� �. ` ' ., *t�,,`I'`x`.r., r•..'wx
<br /> .y �.�'r'e -' ?.. `�'i Y 2rr�ref• a-Y• i-.� i.v ti t : r' v-.u§ M� r� �r� •L: ' fir- y�•,'� r2 p� 'wti'Gc �,t :� n� � �r� y ,
<br /> ,tip.- .� .}.. { �• e � ,.�r � .e y t�''';e� a � �'_ v �
<br /> Concentration profiles :for g contamination are presented in the Appendix Tlie ,
<br /> Ja 'ki-�'-;1'dJ '+'.,� "t �`r rA'•r:. - $-... t + 'r- ' hir ,
<br /> { =alternate ma s shoyw that the current$datamoruto�n$'-we samples„�rorn{Z
<br /> �'-2.'-r'•o' �Y �i..� 1.44 1 - i t+.'n';'�1.. }w:'%r "tli' ftv: �k y h i-."°;5^, x '4t"Se q7"`S"+rr q.'•C . .. ,a I I
<br /> { ;, rand borehole water samples>from /? i/93)scan be rep send tlfe�ther� ywaalocaltze A, ,,t
<br /> Aex .F v�._�F r'irz' . ,i.3,'.r�7 -i..e.+,'i5•'-r Uti`M x ,.,, c ? '
<br /> v t � w'
<br /> «{plmne eenfered round the old dank location r,or yF t He plume Gro g t e e>� ,•
<br /> , property frbmYsoutheastato n9rh. 4z fx ry � �
<br /> C S r 'F l r f } 1 h.X• (�
<br /> ✓c tS- -{,Mlr,w >�• �•�* t+ '•jt ' T'>ie x;J.Tt•A,4 "�~,
<br /> w�� �' x"' � 7 �,�J-`s�'��t�� "� r •1 -c�, r ..
<br /> 1 at.-'�- -_.t --y.. s -.l `ri r i„ F� '7�"�•� - �.:t -w.. Y i� r r.f ,�.r� ��v '`y'T.�e-H k- :u -
<br /> .�.� }. r'f C �, �r've i
<br /> ,' III l3iscusSlOri find COriCl1]B10I18 v ;, f �h i g� �i. _ xT C .• it
<br /> f_ g r:y. ,^ r�,.- '4.as tp r.ya-1� ,+ rr ri�+� .,i'f-•'3�� i� e,.�,i�rl rl'`-,£'�"t4�1 xi rrt I, _'-w--
<br /> ti '" n-- z j� ,:, - "'r 0�. �{.- •`1•, x _ :. t;"i�++v_+.. ?,` wt 1�' .t �-w` y kJ .:s• -k'' �i"�h
<br /> 3 L-.s .r ' � Y t.>y-a•�: 5' $�' .Y4 Cyer _ vL
<br /> �y �sY- � 3'.. v � .�-' d� a�•, � t �ss�>•���K,. � '€'rr ,�-� �r
<br /> � �! '.. � L
<br /> ~ : G'rouridwa#er#lowadsrectton at 1fiasGranttlJ"ine Road°ts tvwardtheo�u�theakst�r r
<br /> Over the past several years groundwater.gracienfs;have'been#o�thj nrt�y both at
<br /> { Cheaiper�'#37,and''at a'varietyof,,other sites along brant ",,Rd 'T ;sluftaut
<br /> groundwater flow may reflect the recent heavy rains of the winter of199 1993 and
<br /> the°enci of the soc-year'drought The water-1.table rose by over 1 6feet-between °;
<br /> r Se temlier 19921'and Feb`ruary, 1993,and heavier.rechar'ge to=tlle north and'west`� A k
<br /> � ! Yrs lF�srr T --'y' 7 - �',•rs*r u
<br /> ,could temporardy_ttl#the relatvelyk flat„gradent fotxnd' t this site gEl Pescadero P1ark'
<br /> Jy h
<br /> _ and North School;a;7 6-a re area northwest of the s udy:property pay Kaye;:pped
<br /> ;the v+rater table here by,"& Higher 'uifilira art rate, while 'the area,#o thel;
<br /> southeast i
<br /> loses most of its precipitation through runoff SIf this-'is true, 'the water table will
<br /> slowly flattenr-and return to-a northward gradient Further monitoring of
<br /> groundwater levels will.clarify this situation: ' t
<br /> The. sand layers-,are much more conducive to groundwater movement than the
<br /> cla sand clay a sands,"Hydraulic.,conductivi' les for.'medtum�-grained sands,run -
<br /> Y y Y_. _ r �: t
<br /> about]0=3 #0=10 _t (3(3J500:'to 350 feet month)but range front._10-5 to 10-9
<br /> meters/second' 35 to'.0.035 feet%month) for silts and clays
<br /> I,
<br /> - Parker Environmental Services"4185 Rialto Court Pittsburg CA 94565-6116 `
<br /> Phone (510) .439-1024 Fax .(510) ;439-2566
<br />
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