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i <br /> Messrs Trommer and L. ..on 16 June 2008 <br /> N Preliminary Five-Year Review Letters Page 4 of 7 <br /> Various Sites <br /> 1140 Hammer Lane, W. <br /> • The CUF has recommended review of the work plan to replace well MW-5 and <br /> evaluate additional remediation requirements; the EHD agrees with the <br /> recommendation , has reviewed the work plan and issued a permit for destruction <br /> of the current MW-5 . The well will be reinstalled approximately 30 feet south of its <br /> current position . <br /> 103 E Street, N . <br /> • This site has been previously commented on by the EHD and the EHD agrees <br /> with the recommendation of the revised letter. <br /> 2537 Waterloo Road , E. <br /> • The CUF has recommended that the RP be directed to assess remedial <br /> technologies and implement active remediation without delay. The EHD has <br /> recently issued an approval for an interim corrective action plan and a work plan <br /> that incorporates a pump and treat system coupled with SVE/IAS; three <br /> additional monitoring wells are to be installed toward the west for additional <br /> plume delineation and two extraction wells are to be installed for remediation <br /> purposes . <br /> 290 Main Street N . <br /> CUF recommends implementing the approved remedial technology; the EHD <br /> agrees. The discharge permit for treated water has been obtained , but the <br /> building permit has not been issued by the City of Manteca; it is estimated that an <br /> additional four weeks or so will be needed before construction is initiated . <br /> 545 Miner Street E. <br /> • CUF recommends closure consideration , the EHD cannot agree at this time. <br /> Recent vapor samples have exceeded the Tier 1 Surfer ESLs and soil data for <br /> TPHg , TPHd, naphthalene, benzene and xylenes exceed gross contamination ; <br /> further evaluation of the data is needed . The EHD will direct the RP to <br /> demonstrate a relationship between the noted contamination and the UST <br /> system release and to evaluate potential remediation requirements. <br /> 595 11th Street E. <br /> • The CUF recommended closure consideration , the EHD agrees with this <br /> recommendation . The vapor intrusion evaluation has been performed and <br /> reported to not be a significant concern , a closure summary report has been <br /> submitted and is pending EHD review. <br /> 1001 Yosemite Avenue E . <br /> • The CUF recommends site closure consideration , the EHD agrees with the <br /> recommendation . A soil vapor investigation has been conducted , but not yet <br /> reported; a site closure summary report has been submitted , but is pending EHD <br /> review. <br /> 5-Year Review Comment Letter 061608.doc <br />