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This form indicates the business owner of the property is R&B Louise, LLC et. al, c/o Dana Parry (president) and the owner address is listed as c/o Reynolds & Brown, 1200 Concord Avenue, Suyite 200, Concord, CA. The business facility information indicates this is not a not a new business regulated by Environmental Health and that this is the location of an existing business but a new type of regulated business. elna'I fr�>irE#*! A to y a This email from the LEA asks whether any work has been done at the site since the waste pile was removed and states that quarterly inspection was conducted in March and the only change noticed was that the trench on the north side of the locked gate (T62?) had been filled. It was also stated that the trenches on the west side of the perimeter fence (T29) are still open and are becoming difficult to observe due to vegetation growth onsite. Comment: Typically exploratory trenches are excavated, observed, logged and documented (photographs), sampled, and backfilled the same day to avoid potential environmental or physical hazards. This report provides some information of the site investigations and remedial action activities conducted at the site. It also provides some of the information that was previously missing such as summary tables of metal analytical results. However, information to confirm the adequacy of waste characterization and delineation was not provided and information to support that wastes were adequately removed from the two waste disposal cells was not provided. For this summary document, Ninyo& Moore comments(blue font)are provided following AGE statements(black, italics). In 1986, the handling of glass waste in the southern area of the site was terminated. Cover(native soil) was placed over the glass management area and sloped for drainage. Comment: please provide the source of this information and indicate who placed the cover soil, the lateral extent of the cover soil, and a summary of the cover thickness based on this source and results of the AGE site investigations in this waste disposal area footprint. "Trenching of earth" within the former glass management area footprint and surrounding areas was conducted to evaluate the limits of wastes (T1 to T23) and to provide for additional trench soil evaluation and sampling (T24 to T91). Trench locations are illustrated on Figure 2. Comments: Based on the table, from trenches T1 to T23, samples analyzed were only from a depth of approximately 5 feet bgs. Typically this is not how a waste investigation is conducted and it is not clear without looking at each individual trench log, whether the samples analyzed consisted of soil, soil mixed with wastes or underlying/adjacent soils. Typically when conducting a waste investigation project (e.g., characterize/delineate wastes), samples are collected from the surface/near surface to evaluate the potential presence and adequacy of the cover soils, within Ninyo&Moore 1 500 E.Louise Avenue,Lathrop,San Joaquin County,California 1 104690095 1 August 11,2017 49