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...~ ;,., r _ ~. <br />~. ~: .~~~~s ~ ~, , ~ . <br />• <br />• <br />6 v <br />• CITY OF LA .~?ORTE j <br />.:: ,_ <br />ENTER-OFFZC~MEMORANDUM "';' °~ <br />T0: J wen,, nager DATE: February 18, 1983 <br />FRO1~: r L, e Director of Public Works <br />. SUBJECT: P p s ro Mobile Oil for Street Contraction <br />U ' <br />Mr.'=Richard Goertz with Mobile 0~:1 contacted me about the pis abil~ay of <br />an "experimeht~.l Street Construction project approximately four weeks ago. <br />During our first meeting we discussed several projects that had been constructed <br />u9ng the phosphogypsum a~.base"mat~rial, Over the next two (2) weeks I looked <br />at several projects using this material. After viewing the projects,and lab <br />test conducted by the Texas Transpo~tetan Institute. I-have concluded that <br />with proper controls the phosphogypsum material can be used for Sheet base. <br />~'he requirement fo'r the streets to be lased in the project required sufficient <br />`lenghth to allow two {2) six hundred feet control sections constructed of crushed <br />l~i~iestone, The streets that are to be used for the project meet all .requirements. <br />• A11,~'c.onst~u.cton on the project shall meet all of the City of La Forte construction <br />,specifications~`now existing. The Engineering Department will conduct all <br />standard lab tests required on all construction projects. at present. -'The <br />'texas Transport.atiori Institute will also monitor the project #'or three years <br />c8n`ducting required lab tests for their research, <br />Cost s.incured by the; City are as follows: <br />131100 square yards of 6jo lime subgrade <br />12,1.65 square yards of phosphogypsum base <br />12.,165 square yards of two course asphalt paving <br />Total_ Cost of Project <br />Less cost of base (a11 equipment labor & basecost <br />paid by PCC/Mobile Oil) <br />Cost to City of La none <br />