|
"""¢'•� wxsl rs� v� �'Srv�,,4Yr � �� "^iwa-�.y if 'Ll-MIN,
<br /> �.,�
<br /> -�,: . 4
<br /> I'M
<br /> ;€� 1 I'l °�)t7�< rr
<br /> ,s� .r} r C.d.�*<si 't;
<br /> ,n
<br /> . •. ': �.. • b _.multi �l• the a �; !
<br /> y The.rate of horizontal flow through the soil is calculated Y P Yg,
<br /> R �1
<br /> f 5
<br /> h draulic conductivi of the'soil b' the.:. oundwater adient The. undwater
<br /> gradients found at the study property would cause a flaw rate.of 0 02inches/year iri
<br /> " a sil}`c]r' cla with a htJ)draulic cortductivxty;of 1{l-8 rii Js, a rate of 20 inc 'esll"ear for a _
<br /> 4 �1 J�'a;, J."xn �.t sn;,r",may .r a�:.`� "i--�x, .' r6JF�•<; ?rs''r q�•_'r'<!{tsM1r"r"�' -X' Mgr. ;re,.�,i� S��' 'k" . ., 'at tar. "=(,� T,i
<br /> fine sand with a rh r'aulic ion' cacti t ;of l fn s; and:abouf`65U: eet wyear forA 'rT�
<br /> . � -.—`.•,iiC ..��y��wyyyyYui
<br /> eth mgr ed'= andth a hydraulic f co �ct of �;B %
<br /> i x is
<br /> q"4-M. r v 3rd- ryf y#
<br /> •...-t d,r Vq�'ra:{gg .r 1"s P far`"-,.'y�` '� t ��a r`'� `? oz,sy. 7-
<br /> g--
<br /> n,
<br /> rf...
<br /> i. ,rra f 3'� a + 3. ` r " -,` `.� 7 'lr, ytr '' d �
<br /> #r The,rate,of otiadwter�flaw can vary,:�greatly depending`on airrangetnentof
<br /> ay,�faA ,�,Js sr..r., ,.,y-"y�tiU ..-f t� ;5W riF�';,stx - :'.,wS.-'. `yr 'rk t ..,?� _41 f
<br /> an low conduciiny��y� a�(ers. incintatvei � e osis ctanneis-of sandyorf gaell ^
<br /> - .,€; [ V ?c -i t -./ -`,oJ n:� , ,'�.n. r';�.1 Y .f9 �„i,�^ti• Y.^-y^.
<br /> vi Lti> soil tf at_serve as��or.oundwater-`coria comp�re�U.: surroundu�g�sil�s`
<br /> —,-r. 7 s Zr•°i .r'd
<br /> s¢Psandl er;schY asthe ,� $aha,layer found belo�+v b feet in^bgrehale �extededF to k
<br /> p a- �, --t'^' �,
<br /> PY S
<br /> a= J t ie sautheas ,ri#co lar carry,contamination a sur risen ,s eat dist lice kHo° ' er, � �
<br /> IMd
<br /> .• - Y r3'. F •�' /,"� v f - K `tr/s .� 7F �:E' +As it3.icy s !
<br /> k� tfie actual ra#e of.' f ourdn! er moment cainon`1"h be dete rmLned,wlh {uniesfi r
<br /> P F
<br /> •3 ', _' �*. _ �,.�...- -, J'E es^o !^D l i..� !4
<br /> t74� C°`, 3' s r .Y'� i -.�,rra"" s'�i3` rs a 41
<br /> e'field f.ea=. -i{,J�x�.;g�7 `�,.,; gi��,;.eP,- •r! �l:xF �§` �.� s'.�� a.� 's �y �C^'"'
<br /> � pV�s" sL •�''3r�' 33i Y��s Fav :d' '�c ,.. ¢; {.,
<br /> �: r-<T.�. `•1a $`y .ix >r i'"�.� }' .s5i�i-.je d `'' �r�v,r3_.h :•s ,yL fr' Y � '4� +'4 L.-? 2 uY n.4E✓.. 1, •,- ...K; fi'ii�T �.o/'{-f t➢* 4s�«:
<br /> ds �•e 'o xr k
<br /> � xl��a
<br /> Sa oa9uinoun'}`Jr` 'ubliC Healflt'SeY'vices etecfFeb pruary 193was cocertd ,z y
<br /> .R•a. *:a_ ,s ',w- ' -.'ys , a;;a..? .r'!' --''SSz 3 .,. I;,f .;v:._.a _;'Y •.;_^: ,#> :t. <.,; r�:o.�s�,' Qr{;;S :�esM -
<br /> �r r r about soil on the tudy,p5roperty,to,the satuth anc ,sou beast of.the for er - V6
<br /> t t ,,a.;t'� r r• '�? +'� } s,. Ir�7C.y4.1� .�,�,. ,y_ :r - { .3u Ir �, {. 7 T m. E .t �, }`.�
<br /> eXcsvation,abut not to theaawest end 4sou ►re'st.°They M.e`- info rna�Zon abort the ti
<br /> svd'. .,1.Sz-s.. �r 1:aSS,s.`s9„* S'Ri',F.' F >f-•- i €y» �9 "'
<br /> s - r•'' ^_t rFx'. $.is 15s- _,�. i a..tier ' .' 7:�+ Z I 3;=-. Jr%:.rs^- ''"` ".r. s.'��`.r. s i Sri ^'-r�pF4i>•'�
<br /> b-
<br /> -area., the-.north r f-f. � �� r f.��'xwK` �,`•"�{G -.,G,,� �:. Y r $ !'��ka t^r.7 k ni br„ s
<br /> _t•.,`a:_) x �F" r- .:.yf�4 lr^;� t� i ' srti> ys' :,�. 5r�r it,.;gy,., - y�r y„} £�j;• Y &,y'. 3r ., r a .rad,.
<br /> a o y "e r• �I :I -v, deK�• e S+_ ' �°, 7 ^ "�
<br /> x 8 � r i: - } '�e Y.a�st .}f�. +��i -a k l ! �_f. K € f x`.:•- r s _, S S ti
<br /> , 31 1
<br /> F•�This�.brk showssth 't e o itarnri�atrbn p txine does;n©t extend toF�the,a ea
<br /> .sx: ;;a'r"A'1 'rrir "'G. i a.�;'Y-rc'' ?!�rr� d�si.-,� ` ,,
<br /> a ' sot heas#;wand east of#Ne 10 merze 60ition"The dent=�f ronta�rn nation to�tkeA
<br /> rs+r !
<br /> tr a µ`north and to #lie, oithv►Testis still,unkno Its still tutclea�r whetherus� ��" I
<br /> h_.,r s '•- -.r'' .s ; .A� 1. r&b
<br /> ,�
<br /> contamination plume orginate- on the study prop erty or at the abandoned gasp
<br /> t. �1. f P FN,�"-�`
<br /> ' stations on the northwest and southwestWj ers of Grant Line Road and`Holl
<br /> .✓ "bib n r + ;.:k
<br /> 3'` Sir± yd' rri n J s x+r yy K
<br /> 4i.� r � ii r .x r� r'�+r R - �"�-�x � • 3�" -� � �". k "4 --la
<br /> f•X ! c. 3 x�.K - i
<br /> *,,,,,'# -
<br /> `l,sti u o . rn
<br /> y:also asked for tests fox fTPH=d and ethylene Nclibromide;(February
<br /> '6. Y p t - F
<br /> 4r 41993) 'However this correspondence was not received on'tirne15 Parker�d` R {�
<br /> a�k �Environment`al Services'-10,; e uicluded n this'sam le ou ' 'These t6":t ill ie��`�A,
<br /> fy P V- P .✓
<br /> re V M i
<br /> A:,made-n' 1the next round of:quarterly�morutoruig f` � �, V�,` to `
<br /> F''+F r4 4
<br /> nx "wa� .�h v ,'rw � - f r+'�, 'a s'' 1vi
<br /> - _ r , a.. -
<br /> IV. Recomntendattoris
<br /> After careful"con"sideration and analysis:of the data collected for this report, it is the t
<br /> -
<br /> opinion of Parker Environmental`.Services that The'-Customer Companyy should
<br /> - Continue quarterly monitoring, adding tests for EDB and TPH=d:' r
<br /> r 2 `To further- character'izethe;extent of contamutation either. .
<br /> �! �A Supervise and drill five'borelioles'aionglhe west en o the
<br /> `property r,. Y ,
<br /> B. install, monitoring well west of the-tanks '
<br /> A map showing.locations of,proposed boreholes and _the- roposed monitoring-well
<br /> is in*fhe Appendix
<br /> f : .
<br /> Parker~Environmental Services 4185 Rialto *Court Pittsburg CA` 94565-6116
<br /> i
<br /> Phone (510) 439-1024 Fax (510) 439-2566 _
<br />
|