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.LjruKNLAk ItK UUAL11 6 .,UNIKUL bUA l®- <br /> 4ENTRAL VALLEY REGION _ .._ .- i:: _. <br /> 3443 ROUnER Roan , _ c •. :.; .:. ,, <br /> SACRAMENTO.Ca 95827.3098—_._ — _ o..'t .1,..•-..+..=.::-;', <, t:_, <br /> qw A" ✓R N&�76 4 Y+ t - S �mYiiSFS As+°ea <br /> g _.+, eritva �"' � °r _ 1 :F' F� < 6 L S �.►41°:T C'4 ''^'.i.•tl0 <br /> N <br /> t•!-• 2 4t �. 8.^` paz ..'yyt.^'S' nr?mr^••' .s`•,• -..•e �w�• ." a. <br /> D.at,.s." v+.r....r f•-or•r•.'�'r},.'•.r-,.atex-t.+°.yf*.4Gx"�u4e-zt�a4,�i`tir;Tt....O s N�6ce{r`r t• ...n•.. t q.+ R � x a d sa o� ^G, x P�. 83 ma , •V 4 kJ1,•s "a'-}s.. -s ,.> m....,xz6•. <br /> rFarw...v:ad'ww'g•�-aY•+e'' <br /> g <br /> .. .'....... _ .... ... ...a ....., ..._ ._...'__ « <br /> K" <br /> ...•+ww"ae..•h +.wrvi+.aewaM ..... - <br /> KR••'•':.;""m••'•+.r+-.x-:_-_ mYYa•4tw'..s\'i.G'i.IWO w -. r ...•v ,G'.A�9-SE6"bLN'�•`.Y. > C8^K�4E"4rA.TC^t•^+dP^'T <br /> 5 Apri 1 1988 - G' , ., .:-_:% 4 vJ <br /> Mr. Tom Horton <br /> Department of Public Works <br /> County of San Joaquin <br /> P.O. Box 1810 <br /> Stockton, CA 95201 <br /> SWAT•PROPOSAL REVIEW CMMENTS, CORRAL HOLLOW LANDFILL, SAN JOAQUIN COUNTY <br /> Thank you for the 25 March 1988 response to our comments on the Solid Waste <br /> Assessment Test (SWAT) proposal for the Corral Hollow landfill. We concur that <br /> the wells to be constructed to satisfy SWAT requirements also fulfill <br /> requirements for a ground water monitoring program under Title 23, California <br /> Code of Regulations, Article 5 (Subchapter 15) . The revised Subchapter 15 <br /> monitoring program will be described in the waste discharge requirements (WDRs) <br /> when they are updated. <br /> Modifications to the proposed monitoring program suggested during our meeting on .. <br /> 1 April 1988 included soil borings near the east corner of Module 2 and the <br /> central northeast side of Module 4. . These two borings will be made in lieu of <br /> three borings between the landfill and Corral Hollow Creek suggested in our <br /> review of the SWAT proposal . These borings will be developed into monitoring <br /> wells if warranted by hydrogeologic conditions. The need for well construction <br /> will be determined by your consultant in the field during drilling. Field work <br /> will also include installation of two additional deep wells (MW-2 and MW-3) <br /> completed in the regional aquifer, one shallow well "(MW-1),- and a shallow well .. <br /> (MW-5) near MW-3, if it is likely that a perched water- table may-develop near . <br /> MW-3 <br /> The soil sampling strategy proposed- for the"shallow* borings' in our. review will« <br /> - be modified so- that samples with highest moi stu-re- content--are selected for._77- <br /> ____ <br /> anelysis,*rather than a composite sample for: each boring.- <br /> If you have any questions, please call Michael Mosbacher at (916) 361-5736. <br /> a <br /> WILLIAM MARSHALL, Chief <br /> Waste Discharge to Land Unit <br /> SER:sg _ <br /> *' t ,i r 4K. a r. � �. ;•* L... s$'"^ '- — 4 a•i �4' `S-�l��Ft ` <br /> .+ 7 t✓ ' j <br /> '� 1�Y. -� .,A r ... t•. _ .. - .. - ..aw'•' .-! -3r •p' • N �; '.W S u sar. <br /> r• <br /> _ <br />