BASED ON THE FINDINGS OF FACT: MANY SAMPLES THAT WERE OBTAINED FROM THIS SITE CONTAINED TOTAL LEAD AT 300 -- 273,000 PPM AND ARSENIC AT 2,090 PPM, THE U.S. EPA HAS DETERMINED THAT RESPONDENT, THE RYLAND GROUP, INC., SHALL PERFORM, AT A MINIMUM, ALL ACTIONS NECESSARY TO IMPLEMENT THE TIME CRITICAL REMOVAL ACTION. IN THE EVENT OF ANY ACTION OR OCCURRENCE DURING PERFORMANCE OF THE WORK WHICH CAUSES OR THREATENS A RELEASE OF WASTE MATERIAL FROM THE SITE THAT CONSTITUTES AN EMERGENCY SITUATION OR MAY PRESENT AN IMMEDIATE THREAT TO PUBLIC HEALTH OR WELFARE OR THE ENVIRONMENT, RESPONDENT SHALL IMMEDIATELY TAKE ALL APPROPRIATE ACTION. RESPONDENT SHALL PAY EPA ALL FUTURE RESPONSE COSTS NOT INCONSISTENT WITH THE NCP. RESPONDENT SHALL BE LIABLE TO EPA FOR STIPULATED PENALTIES FOR FAILURE TO COMPLY WITH THE REQUIREMENTS OF THIS ORDER. RESPONDENT SHALL PAY INTEREST ON UNPAID BALANCE WHEN RESPONDENT FAILS TO PAY STIPULATED PENALTIES. THE OSC SHALL BE RESPONSIBLE FOR OVERSEEING RESPONDENT'S IMPLEMENTATION OF THIS ORDER.