(1) Review and approval of use agreements. Together with the use site evaluation under WAC 173-219-380, the generator must submit to the lead agency for review and approval all proposed or signed contracts or use agreements, if applicable, between:

(a) Generator and distributor of reclaimed water.

(b) Generator and end user of reclaimed water.

(c) Distributor and each end user of reclaimed water.

(2) Content of use agreements. The agreements must include sufficient detail to ensure compliance with requirements of the reclaimed water permit in this chapter, and chapter 90.46 RCW, at the point of use, and must include at a minimum:

(a) Cross-connection control measures.

(b) Monitoring points, parameters, and sample times, if applicable.

(c) Identification of the use site's inclusion in a wellhead protection area or critical aquifer recharge area, if applicable.

(d) If applicable, a copy of the generator's notice to the potable water supplier(s) linked to any such area(s), of any treatment requirements and proposed use(s), and, if any, special protection measures proposed.

(e) Best management practices to ensure permit compliance.

(f) General use based requirements in WAC 173-219-380.

(3) Template use agreements. A template use agreement may be submitted to the lead agency for review and approval. Template use agreements must be approved by the lead agency prior to implementation.

(4) Adding new users. The reclaimed water permit may include conditions authorizing the addition of new users or similar beneficial uses without reopening the permit. For adding new users to previously permitted beneficial uses, a copy of the use agreement must be submitted to the lead agency prior to use. If the beneficial use is not a currently permitted beneficial use, the permittee must provide a new user agreement for approval by the lead agency before the new use can begin.