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J -M A/C Pipe Corporation -3- lb December 1985 FINDINGS & RECOMMENDATIONS 1. EPA 624 and 625 analyses of spent slurry water show nondetectable levels of organic compounds. t: analysis of ••':• sludge indicates that arsenic, chromium,flf• •.ii . • nickel were present at concentrationsabove STLC values. Consequently,• i perform a WET test on pond sediments. arsenic and mercury must be analyzed by atomic absorption, not ICAP's techniques. J -M should specify that chrome+6 and chrome+3 be reported .ice 3. J -M should develop a complete ground water monitoring program to include local ground water gradients, location of wells within 1/2 mile of ponds i theirany, on • gradients, • 1subsurface descrip- tions, and location and constructionof • i i wells. The ground monitoring •' ••i ! • Article 5 and Sections 2595(g) and 2596(a-3)•....; Article • SubchapterChapter • Administrative Code • "Discharge of Wastei • • A copy of revisedregulations may be obtained by calling the Office of Chief Counsel at (916) 322-3580. A monitoring program will be developed and incorporated into a monitoring • •e` Asbestos and PVC particulates may reach Little John Creek via storm water runoff. J -M should develop a plan to retain all storm water on-site or show through ongoing • r i that the storm water contains noconsti- tuents of concern.•: ..: monitoringwill be similar to requirements placed on Ball mill effluent. J -M is discharging r unregulated ponds and should submit a Report of Waste Discharge and technical information for all wastewater generated at th�*_, including storm water. Pond sediments may contain- . • levels of metals. Further wastewater characterization and ground water monitoring ar4 necessary. cc: Mr. Cecil Bonzo, J -M A/C Pipe Corporation, Stockton Mr. John Papathakis, Department of Health Services, Sacramento Ms. Lori Cotulia, San Joaquin local Health District, Stockton