721 E MARINE VIEW DR 2016-01-01 MF Import

Ecology begao a Site Hazard Assessmeot of the former Everett Smeltu in Februery, 1991. Science —' Applications Intemational Cotporation (SAIC) conducted the assessment for Ecology which iocluded a magnetic geophysical survey in and around the site of We former smeltec. T6e geophysical survey included the proposed NoRheast View Pazk propeRy. Soil samples wero collected from ffie former smelter site at this — time; however, the sampling area did not include the proposa! NoRheast View Park. '!be magnetic geophysical survey indicated areas of aaomelous magnetic values significently different from � background readings in the area of U�e former smeltu which suggested the possible presence of slag deposits in t6is area. Magnetic readings in the area of We proposed Northeast View Par}, wecc not significantly differont frnm background readings. � 1�venty soil samples wem collectod in and around the smelter site. Analytica� results indicated the presence of atsenic, cadmium,and lead in all twenty samples. Arsenic was detectal et concentrations grcater than the MTCA MUhod A residendal soil cleanup level of 20 ppm in eleven of the hveaty samples with the — greatest concenhation at 4,670 ppm. Cadmium was detected at concentrations greater then the MTCA Method A cleanup leve1 of 2 ppm in sevea of ffie twenry samples with t6e greatest concentration at l7 ppm. Lead vas detected at concentrations greater than the MTCA Method A cleaaup level of 250 ppm in five of the hventy — samples witlt the gcratest conexntrndon at 864 ppm (SAIC, June "3, 1991). Ecology conducted a pro-temedial investigation in May, 1991 of the area in and around the former smelter site. T6e iavesdgatiou included the collecdon of 85 surfece and near surfa�x soil samples. 'IWo samples wero � collected from the proposed Nottheast View Park. Arsenic was detected in all 85 samples at concencrations • ranging from 1.7 ppm to 53,100 ppm. The majority �f-amples containad arseoic at wncentretions greater than the MTCA Method A cleanup levd for rcsidential soil. Lead concentcations ranged from undetecte� to ' ' 8,870 ppm and cadmium concenhations canged from undetected to 81.2 ppm. The locations of ffie lwo samples collected from the proposed Northeast View Park are shown in Figure 2. Sample S-52, wllected from the north pamel contained aisenic and lead at concentcations of 9.6 aod 131 ppm, respeclively. Sample — S-53,wllected from the south parcel, wntained azsenic,cadmium and lead at concentrations of 145,0.79 and 306 ppm, respectively (SAIC, July, 1991). _ In August, 1991, t6e Everett Smelter Site was give a "number one" (out of five) ranking on Ecology's Hazardous Sites List. The lirt tanks sites in Washington on a scale from one to five. The Evenett Smelter Site was given a number one caniting becausc the former smelter site was developad and, since the 1930's, hes been occupied by ersideoas, public acras, and a highway inteccuange. In April, 1992, Ecology issued an eafoncement order to ASARCO, tne., to conduct interim cleanup actions and to perform a remedial -� investigation aod feasibility study to determine the final cleanup action plan. Interim Cleanup Actions were scheduled to be conducted betwcen May, 1992 and January, 1993 with the Remedial Investigation/Feasibility Study scheauled to be conducted between July, 1992 and OcNber, 1993. 3.0 REGIONAL GEOLOGY AND OCCURRENCE OF GROUND-WATER � Regional geology in the Site area is based on Ground-Water Resources of Snohomish Couoty, Washington, Qeol�gical Water Supply Paper No. 1135 (R. C. Newcomb, 1952). In general, the regionel subsurfece geology of the Everdt area is chacacterized by drift material resulting from the Vashon Period of - glaciation, underlain by saud and silt formetions of the Fsperence Sand a-d the Admiralty Clay units. 3