Rodarte Construction Inc Everett Station Parking Expansion

I I 1 The Contracting Agency may have a National Pollution Discharge Elimination System 2 Construction Stormwater General Permit (CSWGP) as identified in the Contract Special I 3 4 Provisions. The Contracting Agency may or may not transfer coverage of the CSWGP to the Contractor when a CSWGP has been obtained. The Contracting Agency may not have 5 a CSWGP for the project but may have another water quality related permit as identified in I 6 the Contract Special Provisions or the Contracting Agency may not have water quality 7 related permits but the project is subject to applicable laws for the Work. Section 8-01 8 covers all of these conditions. 9 I10 This section is supplemented with the following new subsection: 11 12 8-01.1(1) Definitions I 13 1. pH Affected Stormwater 14 15 a. Stormwater contacting green concrete (concrete that has set/stiffen but is still I 16 curing), recycled concrete, or engineered soils (as defined in the Construction 17 Stormwater General Permit (CSWGP)) as a natural process 18 I 19 b. pH monitoring shall be performed in accordance with the CSWGP, or Water 20 Quality Standards (WQS in accordance with WAC 173-201A (surface) or 173- 21 200C (ground)) when the CSWGP does not apply 22 I 23 24 c. May be neutralized and discharged to surface waters or infiltrated 25 2. pH Affected Non-Stormwater ' 26 27 a. Conditionally authorized in accordance with CSWGP Special Condition S.1.C., 28 uncontaminated water contacting green concrete, recycled concrete, or 29 engineered soils (as defined in the CSWGP) I 30 31 b. Shall not be categorized as cementitious wastewater/concrete wastewater, as 32 defined below ' 33 34 c. Shall be managed and treated in accordance with the CSWGP, or WQS when the 35 CSWGP does not apply I 36 37 d. pH adjustment and dechlorination may be necessary, as specified in the CSWGP 38 or in accordance with WQS when the CSWGP does not apply 49 I40 e. May be neutralized, treated, and discharged to surface waters in accordance with 41 the CSWGP, with the exception of water-only shaft drilling slurry. Water-only shaft 42 drilling slurry may be treated, neutralized, and infiltrated but not discharged to I 43 surface waters (Refer to Special Conditions S1.C. Authorized Discharges and 44 S1.d Prohibited Discharges of the CSWGP) 45 I 46 3. Cementitious Wastewater/Concrete Wastewater 47 48 a. Any water that comes into contact with fine cementitious particles or slurry; any 49 water used in the production, placement and/or clean-up of cementitious products; I 50 51 any water used to cut, grind, wash, or otherwise modify cementitious products I City of EverettPage AM 69 Amendments Everett Station 80 Stall Parking Expansion June 2019 I