3531 SMITH AVE 2016-01-01 MF Import

��.d S07L PILE CONSTRUCTION p� x The soil pile vill be loaded on to dwop trucks using a rubber tired loader. ; y y Approximately S00 yxrds of Smith Avenue will be used by the trucks for M� � transportation to the bioremediation site. All trucks wil] be swept of � � miscellaneous soil prior to entering roadway so as not to track contaminaeed soil y� off of the fo��.er soii pile location or the new bioremediation site. All O�M O� equipment and crucko usrd during soil transport and bioremediation pile N N construction will be cleaned at the completion of the construction phase. _ H o :ne soil will be spread out approximately 2.0 to 2.5 feet high in an area �M� approximately 80 fect by 175 feet. See Figure 3 for soil pile location. The soil pile will be placed wi[hin a soil-bermed area on Griffolyn TX-1200, a 10 mil 4�� OC reiniorced high density polyethylene (HDPE) liner manufactu[ed by Reef Z y3 Industries, Inc. The liner is placed to prevent vertical movement of diesel ` contamination into onsite natural soil. The liner will be laced over the berm t� z p H H as well as across the floor of [he stockpile area. See Figure 4 - Soii Pile � g y Schematic. N C1rJy �C t'� .dhen the soil stockpile is in place and has been graded to the proposed 2.0 to y y 2.5-foot thickness the pile will be covered vith a 10 mf.l HDPE cover to control 0 y dust and volatile organic compound air emissions. The stockpile aill then be � s�rrounded by strav bails or a silt fence to prevent impact to storm vater runoff and will be enclosed by a 6-foot, locked, secutity fence to prevent unavthorized persons from entering the vork area. No Smoking, Hazardous Area, and No UnauChorized Personnel signs will 6e posted along the fencing es well as signs 1 with contact phone numbers in case of an emergency. I �� Leachate controls will not be installed at the site becavse che bioremediation ! pile will be covered and the iaoistute content of the soil will not exceed the 128 , necessary to sustain bioactivity. However the soil may get too dry and will need � to watered Proin time to time to contiol d�st. I � BIOREl�DIATION PROCRAM OPERf.TION AND MAINTENANCE i �1� We anticipate that the bioremediation project should take approximately one year � from the date of soil pile construction. Once tk�e bioremediation pile is , constructed, the soil pile will be tilled on a monthly or bi-monthly basis depending oii the necessLty to provide oxygen, nutrients and innoculant to the �� soil. The pile will be uncovered during tilling events, will be recovered upon � ' completion and will remain covered betveen each event. Tilling will occur until � soil sample analyses indicate that [he soil nile is clean. Tilling will be conducted using a small hand held roto-tiller or a smaller track dozer with xipper teeth, �� Soil samples will be collected from the pile sia s,onths after commencement of - - � tilling activi.ties. A mirSmum of ten soil samples vill be collected at randomly selected locations and submitted fo: chemical analyses. The soil samples will be analpzed for total petroleum hydrocarbons as diesel �.sing Ecology's method C:\WP51\LJR\MAY93\07•778C.LTR